March 2021 - Linux-stable-mirror

stable-rc/queue/4.14 build: 201 builds: 0 failed, 201 passed, 69 warnings (v4.14.225-40-g853df8d0a528)

by kernelci.org bot

stable-rc/queue/4.14 build: 201 builds: 0 failed, 201 passed, 69 warnings (v4.14.225-40-g853df8d0a528) Full Build Summary: https://kernelci.org/build/stable-rc/branch/queue%2F4.14/kernel/v4.14.225-4… Tree: stable-rc Branch: queue/4.14 Git Describe: v4.14.225-40-g853df8d0a528 Git Commit: 853df8d0a528197fee37b36559cdefc06fbeae4e Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Built: 6 unique architectures Warnings Detected: arc: allnoconfig (gcc-8): 1 warning axs103_defconfig (gcc-8): 1 warning axs103_smp_defconfig (gcc-8): 1 warning haps_hs_defconfig (gcc-8): 1 warning haps_hs_smp_defconfig (gcc-8): 1 warning hsdk_defconfig (gcc-8): 1 warning nsim_hs_defconfig (gcc-8): 1 warning nsim_hs_smp_defconfig (gcc-8): 1 warning nsimosci_hs_defconfig (gcc-8): 1 warning nsimosci_hs_smp_defconfig (gcc-8): 1 warning tinyconfig (gcc-8): 1 warning vdk_hs38_defconfig (gcc-8): 1 warning vdk_hs38_smp_defconfig (gcc-8): 1 warning arm64: allnoconfig (gcc-8): 1 warning tinyconfig (gcc-8): 1 warning arm: allnoconfig (gcc-8): 1 warning am200epdkit_defconfig (gcc-8): 1 warning clps711x_defconfig (gcc-8): 1 warning cm_x2xx_defconfig (gcc-8): 1 warning colibri_pxa300_defconfig (gcc-8): 1 warning corgi_defconfig (gcc-8): 1 warning efm32_defconfig (gcc-8): 1 warning eseries_pxa_defconfig (gcc-8): 1 warning h5000_defconfig (gcc-8): 1 warning integrator_defconfig (gcc-8): 1 warning lpc32xx_defconfig (gcc-8): 1 warning lpd270_defconfig (gcc-8): 1 warning lubbock_defconfig (gcc-8): 1 warning magician_defconfig (gcc-8): 1 warning mainstone_defconfig (gcc-8): 1 warning multi_v4t_defconfig (gcc-8): 1 warning palmz72_defconfig (gcc-8): 1 warning pcm027_defconfig (gcc-8): 1 warning prima2_defconfig (gcc-8): 1 warning pxa168_defconfig (gcc-8): 1 warning pxa255-idp_defconfig (gcc-8): 1 warning pxa3xx_defconfig (gcc-8): 1 warning pxa910_defconfig (gcc-8): 1 warning raumfeld_defconfig (gcc-8): 1 warning s3c2410_defconfig (gcc-8): 1 warning s3c6400_defconfig (gcc-8): 1 warning s5pv210_defconfig (gcc-8): 1 warning spitz_defconfig (gcc-8): 1 warning stm32_defconfig (gcc-8): 1 warning tango4_defconfig (gcc-8): 1 warning tct_hammer_defconfig (gcc-8): 1 warning tinyconfig (gcc-8): 1 warning versatile_defconfig (gcc-8): 1 warning viper_defconfig (gcc-8): 1 warning vt8500_v6_v7_defconfig (gcc-8): 1 warning xcep_defconfig (gcc-8): 1 warning zeus_defconfig (gcc-8): 1 warning i386: mips: db1xxx_defconfig (gcc-8): 1 warning jmr3927_defconfig (gcc-8): 1 warning malta_defconfig (gcc-8): 1 warning malta_kvm_guest_defconfig (gcc-8): 1 warning malta_qemu_32r6_defconfig (gcc-8): 2 warnings maltaaprp_defconfig (gcc-8): 1 warning maltasmvp_defconfig (gcc-8): 1 warning maltasmvp_eva_defconfig (gcc-8): 1 warning maltaup_defconfig (gcc-8): 1 warning maltaup_xpa_defconfig (gcc-8): 1 warning pic32mzda_defconfig (gcc-8): 1 warning xilfpga_defconfig (gcc-8): 1 warning x86_64: allnoconfig (gcc-8): 1 warning tinyconfig (gcc-8): 2 warnings x86_64_defconfig (gcc-8): 1 warning Warnings summary: 64 drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] 3 Warning: synced file at 'tools/objtool/arch/x86/include/asm/insn.h' differs from latest kernel version at 'arch/x86/include/asm/insn.h' 1 {standard input}:29: Warning: macro instruction expanded into multiple instructions 1 .config:1028:warning: override: UNWINDER_GUESS changes choice state ================================================================================ Detailed per-defconfig build reports: -------------------------------------------------------------------------------- 32r2el_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- acs5k_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- acs5k_tiny_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- allnoconfig (i386, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arm64, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- allnoconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arc, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- allnoconfig (x86_64, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: Warning: synced file at 'tools/objtool/arch/x86/include/asm/insn.h' differs from latest kernel version at 'arch/x86/include/asm/insn.h' -------------------------------------------------------------------------------- am200epdkit_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- ar7_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- aspeed_g4_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- aspeed_g5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- assabet_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- at91_dt_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ath25_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ath79_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- axm55xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- axs103_defconfig (arc, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- axs103_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- badge4_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm2835_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm47xx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm63xx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bigsur_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bmips_be_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bmips_stb_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- capcella_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cavium_octeon_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cerfcube_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ci20_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- clps711x_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- cm_x2xx_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- cm_x300_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cns3420vb_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cobalt_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- colibri_pxa270_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- colibri_pxa300_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- collie_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- corgi_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- davinci_all_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- db1xxx_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- decstation_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig (arm64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- dove_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- e55_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ebsa110_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- efm32_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- em_x270_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ep93xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- eseries_pxa_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- exynos_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ezx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- footbridge_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- fuloong2e_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- gemini_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- gpr_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- h3600_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- h5000_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- hackkit_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- haps_hs_defconfig (arc, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- haps_hs_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- hisi_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- hsdk_defconfig (arc, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- i386_defconfig (i386, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imote2_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v4_v5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v6_v7_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- integrator_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- iop13xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop32x_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop33x_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip22_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip27_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip28_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip32_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ixp4xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jazz_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jmr3927_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- jornada720_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- keystone_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ks8695_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lart_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lasat_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lemote2f_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- loongson1b_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- loongson1c_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- loongson3_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lpc18xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lpc32xx_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- lpd270_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- lubbock_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- magician_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- mainstone_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- malta_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- malta_kvm_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_kvm_guest_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- malta_qemu_32r6_defconfig (mips, gcc-8) — PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: {standard input}:29: Warning: macro instruction expanded into multiple instructions drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- maltaaprp_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- maltasmvp_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- maltasmvp_eva_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- maltaup_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- maltaup_xpa_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- markeins_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mini2440_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mips_paravirt_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mmp2_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- moxart_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mpc30x_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mps2_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- msp71xx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mtx1_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v4t_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- multi_v5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v7_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mv78xx0_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mvebu_v5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mvebu_v7_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mxs_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- neponset_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- netwinder_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- netx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nhk8815_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nlm_xlp_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nlm_xlr_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nsim_hs_defconfig (arc, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- nsim_hs_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- nsimosci_hs_defconfig (arc, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- nsimosci_hs_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- nuc910_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nuc950_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nuc960_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap1_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap2plus_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omega2p_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- orion5x_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- palmz72_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- pcm027_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- pic32mzda_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- pistachio_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pleb_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pnx8335_stb225_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- prima2_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- pxa168_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- pxa255-idp_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- pxa3xx_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- pxa910_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- pxa_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- qcom_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- qi_lb60_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- raumfeld_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- rb532_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rbtx49xx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- realview_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rm200_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rpc_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rt305x_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- s3c2410_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- s3c6400_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- s5pv210_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- sama5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sb1250_swarm_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- shannon_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- shmobile_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- simpad_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- socfpga_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear13xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear3xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear6xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spitz_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- stm32_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- sunxi_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tango4_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- tb0219_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0226_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0287_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tct_hammer_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- tegra_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (i386, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (arm64, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- tinyconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- tinyconfig (x86_64, gcc-8) — PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: .config:1028:warning: override: UNWINDER_GUESS changes choice state Warning: synced file at 'tools/objtool/arch/x86/include/asm/insn.h' differs from latest kernel version at 'arch/x86/include/asm/insn.h' -------------------------------------------------------------------------------- tinyconfig (arc, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- trizeps4_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- u300_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- u8500_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vdk_hs38_defconfig (arc, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- vdk_hs38_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- versatile_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- vexpress_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- viper_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- vocore2_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vt8500_v6_v7_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- workpad_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig (x86_64, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: Warning: synced file at 'tools/objtool/arch/x86/include/asm/insn.h' differs from latest kernel version at 'arch/x86/include/asm/insn.h' -------------------------------------------------------------------------------- xcep_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- xilfpga_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- xway_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- zeus_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/clk/clk.c:48:27: warning: ‘orphan_list’ defined but not used [-Wunused-variable] -------------------------------------------------------------------------------- zx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches --- For more info write to <info(a)kernelci.org>

3 years, 10 months

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[patch 29/29] zram: fix broken page writeback

by Andrew Morton

From: Minchan Kim <minchan(a)kernel.org> Subject: zram: fix broken page writeback commit 0d8359620d9b ("zram: support page writeback") introduced two problems. It overwrites writeback_store's return value as kstrtol's return value, which makes return value zero so user could see zero as return value of write syscall even though it wrote data successfully. It also breaks index value in the loop in that it doesn't increase the index any longer. It means it can write only first starting block index so user couldn't write all idle pages in the zram so lose memory saving chance. This patch fixes those issues. Link: https://lkml.kernel.org/r/20210312173949.2197662-2-minchan@kernel.org Fixes: 0d8359620d9b("zram: support page writeback") Signed-off-by: Minchan Kim <minchan(a)kernel.org> Reported-by: Amos Bianchi <amosbianchi(a)google.com> Cc: Sergey Senozhatsky <sergey.senozhatsky(a)gmail.com> Cc: John Dias <joaodias(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- drivers/block/zram/zram_drv.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/drivers/block/zram/zram_drv.c~zram-fix-broken-page-writeback +++ a/drivers/block/zram/zram_drv.c @@ -638,8 +638,8 @@ static ssize_t writeback_store(struct de if (strncmp(buf, PAGE_WB_SIG, sizeof(PAGE_WB_SIG) - 1)) return -EINVAL; - ret = kstrtol(buf + sizeof(PAGE_WB_SIG) - 1, 10, &index); - if (ret || index >= nr_pages) + if (kstrtol(buf + sizeof(PAGE_WB_SIG) - 1, 10, &index) || + index >= nr_pages) return -EINVAL; nr_pages = 1; @@ -663,7 +663,7 @@ static ssize_t writeback_store(struct de goto release_init_lock; } - while (nr_pages--) { + for (; nr_pages != 0; index++, nr_pages--) { struct bio_vec bvec; bvec.bv_page = page; _

3 years, 10 months

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[patch 28/29] zram: fix return value on writeback_store

by Andrew Morton

From: Minchan Kim <minchan(a)kernel.org> Subject: zram: fix return value on writeback_store writeback_store's return value is overwritten by submit_bio_wait's return value. Thus, writeback_store will return zero since there was no IO error. In the end, write syscall from userspace will see the zero as return value, which could make the process stall to keep trying the write until it will succeed. Link: https://lkml.kernel.org/r/20210312173949.2197662-1-minchan@kernel.org Fixes: 3b82a051c101("drivers/block/zram/zram_drv.c: fix error return codes not being returned in writeback_store") Signed-off-by: Minchan Kim <minchan(a)kernel.org> Cc: Sergey Senozhatsky <sergey.senozhatsky(a)gmail.com> Cc: Colin Ian King <colin.king(a)canonical.com> Cc: John Dias <joaodias(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- drivers/block/zram/zram_drv.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) --- a/drivers/block/zram/zram_drv.c~zram-fix-return-value-on-writeback_store +++ a/drivers/block/zram/zram_drv.c @@ -627,7 +627,7 @@ static ssize_t writeback_store(struct de struct bio_vec bio_vec; struct page *page; ssize_t ret = len; - int mode; + int mode, err; unsigned long blk_idx = 0; if (sysfs_streq(buf, "idle")) @@ -728,12 +728,17 @@ static ssize_t writeback_store(struct de * XXX: A single page IO would be inefficient for write * but it would be not bad as starter. */ - ret = submit_bio_wait(&bio); - if (ret) { + err = submit_bio_wait(&bio); + if (err) { zram_slot_lock(zram, index); zram_clear_flag(zram, index, ZRAM_UNDER_WB); zram_clear_flag(zram, index, ZRAM_IDLE); zram_slot_unlock(zram, index); + /* + * Return last IO error unless every IO were + * not suceeded. + */ + ret = err; continue; } _

3 years, 10 months

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[patch 27/29] mm/memcg: set memcg when splitting page

by Andrew Morton

From: Zhou Guanghui <zhouguanghui1(a)huawei.com> Subject: mm/memcg: set memcg when splitting page As described in the split_page() comment, for the non-compound high order page, the sub-pages must be freed individually. If the memcg of the first page is valid, the tail pages cannot be uncharged when be freed. For example, when alloc_pages_exact is used to allocate 1MB continuous physical memory, 2MB is charged(kmemcg is enabled and __GFP_ACCOUNT is set). When make_alloc_exact free the unused 1MB and free_pages_exact free the applied 1MB, actually, only 4KB(one page) is uncharged. Therefore, the memcg of the tail page needs to be set when splitting a page. Michel: There are at least two explicit users of __GFP_ACCOUNT with alloc_exact_pages added recently. See 7efe8ef274024 ("KVM: arm64: Allocate stage-2 pgd pages with GFP_KERNEL_ACCOUNT") and c419621873713 ("KVM: s390: Add memcg accounting to KVM allocations"), so this is not just a theoretical issue. Link: https://lkml.kernel.org/r/20210304074053.65527-3-zhouguanghui1@huawei.com Signed-off-by: Zhou Guanghui <zhouguanghui1(a)huawei.com> Acked-by: Johannes Weiner <hannes(a)cmpxchg.org> Reviewed-by: Zi Yan <ziy(a)nvidia.com> Reviewed-by: Shakeel Butt <shakeelb(a)google.com> Acked-by: Michal Hocko <mhocko(a)suse.com> Cc: Hanjun Guo <guohanjun(a)huawei.com> Cc: Hugh Dickins <hughd(a)google.com> Cc: Kefeng Wang <wangkefeng.wang(a)huawei.com> Cc: "Kirill A. Shutemov" <kirill.shutemov(a)linux.intel.com> Cc: Nicholas Piggin <npiggin(a)gmail.com> Cc: Rui Xiang <rui.xiang(a)huawei.com> Cc: Tianhong Ding <dingtianhong(a)huawei.com> Cc: Weilong Chen <chenweilong(a)huawei.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/page_alloc.c | 1 + 1 file changed, 1 insertion(+) --- a/mm/page_alloc.c~mm-memcg-set-memcg-when-split-page +++ a/mm/page_alloc.c @@ -3314,6 +3314,7 @@ void split_page(struct page *page, unsig for (i = 1; i < (1 << order); i++) set_page_refcounted(page + i); split_page_owner(page, 1 << order); + split_page_memcg(page, 1 << order); } EXPORT_SYMBOL_GPL(split_page); _

3 years, 10 months

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[patch 26/29] mm/memcg: rename mem_cgroup_split_huge_fixup to split_page_memcg and add nr_pages argument

by Andrew Morton

From: Zhou Guanghui <zhouguanghui1(a)huawei.com> Subject: mm/memcg: rename mem_cgroup_split_huge_fixup to split_page_memcg and add nr_pages argument Rename mem_cgroup_split_huge_fixup to split_page_memcg and explicitly pass in page number argument. In this way, the interface name is more common and can be used by potential users. In addition, the complete info(memcg and flag) of the memcg needs to be set to the tail pages. Link: https://lkml.kernel.org/r/20210304074053.65527-2-zhouguanghui1@huawei.com Signed-off-by: Zhou Guanghui <zhouguanghui1(a)huawei.com> Acked-by: Johannes Weiner <hannes(a)cmpxchg.org> Reviewed-by: Zi Yan <ziy(a)nvidia.com> Reviewed-by: Shakeel Butt <shakeelb(a)google.com> Acked-by: Michal Hocko <mhocko(a)suse.com> Cc: Hugh Dickins <hughd(a)google.com> Cc: "Kirill A. Shutemov" <kirill.shutemov(a)linux.intel.com> Cc: Nicholas Piggin <npiggin(a)gmail.com> Cc: Kefeng Wang <wangkefeng.wang(a)huawei.com> Cc: Hanjun Guo <guohanjun(a)huawei.com> Cc: Tianhong Ding <dingtianhong(a)huawei.com> Cc: Weilong Chen <chenweilong(a)huawei.com> Cc: Rui Xiang <rui.xiang(a)huawei.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- include/linux/memcontrol.h | 6 ++---- mm/huge_memory.c | 2 +- mm/memcontrol.c | 15 ++++++--------- 3 files changed, 9 insertions(+), 14 deletions(-) --- a/include/linux/memcontrol.h~mm-memcg-rename-mem_cgroup_split_huge_fixup-to-split_page_memcg +++ a/include/linux/memcontrol.h @@ -1061,9 +1061,7 @@ static inline void memcg_memory_event_mm rcu_read_unlock(); } -#ifdef CONFIG_TRANSPARENT_HUGEPAGE -void mem_cgroup_split_huge_fixup(struct page *head); -#endif +void split_page_memcg(struct page *head, unsigned int nr); #else /* CONFIG_MEMCG */ @@ -1400,7 +1398,7 @@ unsigned long mem_cgroup_soft_limit_recl return 0; } -static inline void mem_cgroup_split_huge_fixup(struct page *head) +static inline void split_page_memcg(struct page *head, unsigned int nr) { } --- a/mm/huge_memory.c~mm-memcg-rename-mem_cgroup_split_huge_fixup-to-split_page_memcg +++ a/mm/huge_memory.c @@ -2467,7 +2467,7 @@ static void __split_huge_page(struct pag int i; /* complete memcg works before add pages to LRU */ - mem_cgroup_split_huge_fixup(head); + split_page_memcg(head, nr); if (PageAnon(head) && PageSwapCache(head)) { swp_entry_t entry = { .val = page_private(head) }; --- a/mm/memcontrol.c~mm-memcg-rename-mem_cgroup_split_huge_fixup-to-split_page_memcg +++ a/mm/memcontrol.c @@ -3287,24 +3287,21 @@ void obj_cgroup_uncharge(struct obj_cgro #endif /* CONFIG_MEMCG_KMEM */ -#ifdef CONFIG_TRANSPARENT_HUGEPAGE /* - * Because page_memcg(head) is not set on compound tails, set it now. + * Because page_memcg(head) is not set on tails, set it now. */ -void mem_cgroup_split_huge_fixup(struct page *head) +void split_page_memcg(struct page *head, unsigned int nr) { struct mem_cgroup *memcg = page_memcg(head); int i; - if (mem_cgroup_disabled()) + if (mem_cgroup_disabled() || !memcg) return; - for (i = 1; i < HPAGE_PMD_NR; i++) { - css_get(&memcg->css); - head[i].memcg_data = (unsigned long)memcg; - } + for (i = 1; i < nr; i++) + head[i].memcg_data = head->memcg_data; + css_get_many(&memcg->css, nr - 1); } -#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #ifdef CONFIG_MEMCG_SWAP /** _

3 years, 10 months

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[patch 22/29] mm/userfaultfd: fix memory corruption due to writeprotect

by Andrew Morton

From: Nadav Amit <namit(a)vmware.com> Subject: mm/userfaultfd: fix memory corruption due to writeprotect Userfaultfd self-test fails occasionally, indicating a memory corruption. Analyzing this problem indicates that there is a real bug since mmap_lock is only taken for read in mwriteprotect_range() and defers flushes, and since there is insufficient consideration of concurrent deferred TLB flushes in wp_page_copy(). Although the PTE is flushed from the TLBs in wp_page_copy(), this flush takes place after the copy has already been performed, and therefore changes of the page are possible between the time of the copy and the time in which the PTE is flushed. To make matters worse, memory-unprotection using userfaultfd also poses a problem. Although memory unprotection is logically a promotion of PTE permissions, and therefore should not require a TLB flush, the current userrfaultfd code might actually cause a demotion of the architectural PTE permission: when userfaultfd_writeprotect() unprotects memory region, it unintentionally *clears* the RW-bit if it was already set. Note that this unprotecting a PTE that is not write-protected is a valid use-case: the userfaultfd monitor might ask to unprotect a region that holds both write-protected and write-unprotected PTEs. The scenario that happens in selftests/vm/userfaultfd is as follows: cpu0 cpu1 cpu2 ---- ---- ---- [ Writable PTE cached in TLB ] userfaultfd_writeprotect() [ write-*unprotect* ] mwriteprotect_range() mmap_read_lock() change_protection() change_protection_range() ... change_pte_range() [ *clear* “write”-bit ] [ defer TLB flushes ] [ page-fault ] ... wp_page_copy() cow_user_page() [ copy page ] [ write to old page ] ... set_pte_at_notify() A similar scenario can happen: cpu0 cpu1 cpu2 cpu3 ---- ---- ---- ---- [ Writable PTE cached in TLB ] userfaultfd_writeprotect() [ write-protect ] [ deferred TLB flush ] userfaultfd_writeprotect() [ write-unprotect ] [ deferred TLB flush] [ page-fault ] wp_page_copy() cow_user_page() [ copy page ] ... [ write to page ] set_pte_at_notify() This race exists since commit 292924b26024 ("userfaultfd: wp: apply _PAGE_UFFD_WP bit"). Yet, as Yu Zhao pointed, these races became apparent since commit 09854ba94c6a ("mm: do_wp_page() simplification") which made wp_page_copy() more likely to take place, specifically if page_count(page) > 1. To resolve the aforementioned races, check whether there are pending flushes on uffd-write-protected VMAs, and if there are, perform a flush before doing the COW. Further optimizations will follow to avoid during uffd-write-unprotect unnecassary PTE write-protection and TLB flushes. Link: https://lkml.kernel.org/r/20210304095423.3825684-1-namit@vmware.com Fixes: 09854ba94c6a ("mm: do_wp_page() simplification") Signed-off-by: Nadav Amit <namit(a)vmware.com> Suggested-by: Yu Zhao <yuzhao(a)google.com> Reviewed-by: Peter Xu <peterx(a)redhat.com> Tested-by: Peter Xu <peterx(a)redhat.com> Cc: Andrea Arcangeli <aarcange(a)redhat.com> Cc: Andy Lutomirski <luto(a)kernel.org> Cc: Pavel Emelyanov <xemul(a)openvz.org> Cc: Mike Kravetz <mike.kravetz(a)oracle.com> Cc: Mike Rapoport <rppt(a)linux.vnet.ibm.com> Cc: Minchan Kim <minchan(a)kernel.org> Cc: Will Deacon <will(a)kernel.org> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: <stable(a)vger.kernel.org> [5.9+] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/memory.c | 8 ++++++++ 1 file changed, 8 insertions(+) --- a/mm/memory.c~mm-userfaultfd-fix-memory-corruption-due-to-writeprotect +++ a/mm/memory.c @@ -3097,6 +3097,14 @@ static vm_fault_t do_wp_page(struct vm_f return handle_userfault(vmf, VM_UFFD_WP); } + /* + * Userfaultfd write-protect can defer flushes. Ensure the TLB + * is flushed in this case before copying. + */ + if (unlikely(userfaultfd_wp(vmf->vma) && + mm_tlb_flush_pending(vmf->vma->vm_mm))) + flush_tlb_page(vmf->vma, vmf->address); + vmf->page = vm_normal_page(vma, vmf->address, vmf->orig_pte); if (!vmf->page) { /* _

3 years, 10 months

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[patch 21/29] kasan: fix KASAN_STACK dependency for HW_TAGS

by Andrew Morton

From: Andrey Konovalov <andreyknvl(a)google.com> Subject: kasan: fix KASAN_STACK dependency for HW_TAGS There's a runtime failure when running HW_TAGS-enabled kernel built with GCC on hardware that doesn't support MTE. GCC-built kernels always have CONFIG_KASAN_STACK enabled, even though stack instrumentation isn't supported by HW_TAGS. Having that config enabled causes KASAN to issue MTE-only instructions to unpoison kernel stacks, which causes the failure. Fix the issue by disallowing CONFIG_KASAN_STACK when HW_TAGS is used. (The commit that introduced CONFIG_KASAN_HW_TAGS specified proper dependency for CONFIG_KASAN_STACK_ENABLE but not for CONFIG_KASAN_STACK.) Link: https://lkml.kernel.org/r/59e75426241dbb5611277758c8d4d6f5f9298dac.16152154… Fixes: 6a63a63ff1ac ("kasan: introduce CONFIG_KASAN_HW_TAGS") Signed-off-by: Andrey Konovalov <andreyknvl(a)google.com> Reported-by: Catalin Marinas <catalin.marinas(a)arm.com> Cc: <stable(a)vger.kernel.org> Cc: Will Deacon <will.deacon(a)arm.com> Cc: Vincenzo Frascino <vincenzo.frascino(a)arm.com> Cc: Dmitry Vyukov <dvyukov(a)google.com> Cc: Andrey Ryabinin <aryabinin(a)virtuozzo.com> Cc: Alexander Potapenko <glider(a)google.com> Cc: Marco Elver <elver(a)google.com> Cc: Peter Collingbourne <pcc(a)google.com> Cc: Evgenii Stepanov <eugenis(a)google.com> Cc: Branislav Rankov <Branislav.Rankov(a)arm.com> Cc: Kevin Brodsky <kevin.brodsky(a)arm.com> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- lib/Kconfig.kasan | 1 + 1 file changed, 1 insertion(+) --- a/lib/Kconfig.kasan~kasan-fix-kasan_stack-dependency-for-hw_tags +++ a/lib/Kconfig.kasan @@ -156,6 +156,7 @@ config KASAN_STACK_ENABLE config KASAN_STACK int + depends on KASAN_GENERIC || KASAN_SW_TAGS default 1 if KASAN_STACK_ENABLE || CC_IS_GCC default 0 _

3 years, 10 months

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[patch 20/29] kasan, mm: fix crash with HW_TAGS and DEBUG_PAGEALLOC

by Andrew Morton

From: Andrey Konovalov <andreyknvl(a)google.com> Subject: kasan, mm: fix crash with HW_TAGS and DEBUG_PAGEALLOC Currently, kasan_free_nondeferred_pages()->kasan_free_pages() is called after debug_pagealloc_unmap_pages(). This causes a crash when debug_pagealloc is enabled, as HW_TAGS KASAN can't set tags on an unmapped page. This patch puts kasan_free_nondeferred_pages() before debug_pagealloc_unmap_pages() and arch_free_page(), which can also make the page unavailable. Link: https://lkml.kernel.org/r/24cd7db274090f0e5bc3adcdc7399243668e3171.16149873… Fixes: 94ab5b61ee16 ("kasan, arm64: enable CONFIG_KASAN_HW_TAGS") Signed-off-by: Andrey Konovalov <andreyknvl(a)google.com> Cc: Catalin Marinas <catalin.marinas(a)arm.com> Cc: Will Deacon <will.deacon(a)arm.com> Cc: Vincenzo Frascino <vincenzo.frascino(a)arm.com> Cc: Dmitry Vyukov <dvyukov(a)google.com> Cc: Andrey Ryabinin <aryabinin(a)virtuozzo.com> Cc: Alexander Potapenko <glider(a)google.com> Cc: Marco Elver <elver(a)google.com> Cc: Peter Collingbourne <pcc(a)google.com> Cc: Evgenii Stepanov <eugenis(a)google.com> Cc: Branislav Rankov <Branislav.Rankov(a)arm.com> Cc: Kevin Brodsky <kevin.brodsky(a)arm.com> Cc: Christoph Hellwig <hch(a)infradead.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/page_alloc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) --- a/mm/page_alloc.c~kasan-mm-fix-crash-with-hw_tags-and-debug_pagealloc +++ a/mm/page_alloc.c @@ -1282,6 +1282,12 @@ static __always_inline bool free_pages_p kernel_poison_pages(page, 1 << order); /* + * With hardware tag-based KASAN, memory tags must be set before the + * page becomes unavailable via debug_pagealloc or arch_free_page. + */ + kasan_free_nondeferred_pages(page, order); + + /* * arch_free_page() can make the page's contents inaccessible. s390 * does this. So nothing which can access the page's contents should * happen after this. @@ -1290,8 +1296,6 @@ static __always_inline bool free_pages_p debug_pagealloc_unmap_pages(page, 1 << order); - kasan_free_nondeferred_pages(page, order); - return true; } _

3 years, 10 months

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[patch 19/29] mm/madvise: replace ptrace attach requirement for process_madvise

by Andrew Morton

From: Suren Baghdasaryan <surenb(a)google.com> Subject: mm/madvise: replace ptrace attach requirement for process_madvise process_madvise currently requires ptrace attach capability. PTRACE_MODE_ATTACH gives one process complete control over another process. It effectively removes the security boundary between the two processes (in one direction). Granting ptrace attach capability even to a system process is considered dangerous since it creates an attack surface. This severely limits the usage of this API. The operations process_madvise can perform do not affect the correctness of the operation of the target process; they only affect where the data is physically located (and therefore, how fast it can be accessed). What we want is the ability for one process to influence another process in order to optimize performance across the entire system while leaving the security boundary intact. Replace PTRACE_MODE_ATTACH with a combination of PTRACE_MODE_READ and CAP_SYS_NICE. PTRACE_MODE_READ to prevent leaking ASLR metadata and CAP_SYS_NICE for influencing process performance. Link: https://lkml.kernel.org/r/20210303185807.2160264-1-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb(a)google.com> Reviewed-by: Kees Cook <keescook(a)chromium.org> Acked-by: Minchan Kim <minchan(a)kernel.org> Acked-by: David Rientjes <rientjes(a)google.com> Cc: Jann Horn <jannh(a)google.com> Cc: Jeff Vander Stoep <jeffv(a)google.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Shakeel Butt <shakeelb(a)google.com> Cc: Tim Murray <timmurray(a)google.com> Cc: Florian Weimer <fweimer(a)redhat.com> Cc: Oleg Nesterov <oleg(a)redhat.com> Cc: James Morris <jmorris(a)namei.org> Cc: <stable(a)vger.kernel.org> [5.10+] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/madvise.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) --- a/mm/madvise.c~mm-madvise-replace-ptrace-attach-requirement-for-process_madvise +++ a/mm/madvise.c @@ -1198,12 +1198,22 @@ SYSCALL_DEFINE5(process_madvise, int, pi goto release_task; } - mm = mm_access(task, PTRACE_MODE_ATTACH_FSCREDS); + /* Require PTRACE_MODE_READ to avoid leaking ASLR metadata. */ + mm = mm_access(task, PTRACE_MODE_READ_FSCREDS); if (IS_ERR_OR_NULL(mm)) { ret = IS_ERR(mm) ? PTR_ERR(mm) : -ESRCH; goto release_task; } + /* + * Require CAP_SYS_NICE for influencing process performance. Note that + * only non-destructive hints are currently supported. + */ + if (!capable(CAP_SYS_NICE)) { + ret = -EPERM; + goto release_mm; + } + total_len = iov_iter_count(&iter); while (iov_iter_count(&iter)) { @@ -1218,6 +1228,7 @@ SYSCALL_DEFINE5(process_madvise, int, pi if (ret == 0) ret = total_len - iov_iter_count(&iter); +release_mm: mmput(mm); release_task: put_task_struct(task); _

3 years, 10 months

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[patch 14/29] linux/compiler-clang.h: define HAVE_BUILTIN_BSWAP*

by Andrew Morton

From: Arnd Bergmann <arnd(a)arndb.de> Subject: linux/compiler-clang.h: define HAVE_BUILTIN_BSWAP* Separating compiler-clang.h from compiler-gcc.h inadventently dropped the definitions of the three HAVE_BUILTIN_BSWAP macros, which requires falling back to the open-coded version and hoping that the compiler detects it. Since all versions of clang support the __builtin_bswap interfaces, add back the flags and have the headers pick these up automatically. This results in a 4% improvement of compilation speed for arm defconfig. Note: it might also be worth revisiting which architectures set CONFIG_ARCH_USE_BUILTIN_BSWAP for one compiler or the other, today this is set on six architectures (arm32, csky, mips, powerpc, s390, x86), while another ten architectures define custom helpers (alpha, arc, ia64, m68k, mips, nios2, parisc, sh, sparc, xtensa), and the rest (arm64, h8300, hexagon, microblaze, nds32, openrisc, riscv) just get the unoptimized version and rely on the compiler to detect it. A long time ago, the compiler builtins were architecture specific, but nowadays, all compilers that are able to build the kernel have correct implementations of them, though some may not be as optimized as the inline asm versions. The patch that dropped the optimization landed in v4.19, so as discussed it would be fairly safe to backport this revert to stable kernels to the 4.19/5.4/5.10 stable kernels, but there is a remaining risk for regressions, and it has no known side-effects besides compile speed. Link: https://lkml.kernel.org/r/20210226161151.2629097-1-arnd@kernel.org Link: https://lore.kernel.org/lkml/20210225164513.3667778-1-arnd@kernel.org/ Fixes: 815f0ddb346c ("include/linux/compiler*.h: make compiler-*.h mutually exclusive") Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> Reviewed-by: Nathan Chancellor <nathan(a)kernel.org> Reviewed-by: Kees Cook <keescook(a)chromium.org> Acked-by: Miguel Ojeda <ojeda(a)kernel.org> Acked-by: Nick Desaulniers <ndesaulniers(a)google.com> Acked-by: Luc Van Oostenryck <luc.vanoostenryck(a)gmail.com> Cc: Masahiro Yamada <masahiroy(a)kernel.org> Cc: Nick Hu <nickhu(a)andestech.com> Cc: Greentime Hu <green.hu(a)gmail.com> Cc: Vincent Chen <deanbo422(a)gmail.com> Cc: Paul Walmsley <paul.walmsley(a)sifive.com> Cc: Palmer Dabbelt <palmer(a)dabbelt.com> Cc: Albert Ou <aou(a)eecs.berkeley.edu> Cc: Guo Ren <guoren(a)kernel.org> Cc: Randy Dunlap <rdunlap(a)infradead.org> Cc: Sami Tolvanen <samitolvanen(a)google.com> Cc: Marco Elver <elver(a)google.com> Cc: Arvind Sankar <nivedita(a)alum.mit.edu> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- include/linux/compiler-clang.h | 6 ++++++ 1 file changed, 6 insertions(+) --- a/include/linux/compiler-clang.h~linux-compiler-clangh-define-have_builtin_bswap +++ a/include/linux/compiler-clang.h @@ -31,6 +31,12 @@ #define __no_sanitize_thread #endif +#if defined(CONFIG_ARCH_USE_BUILTIN_BSWAP) +#define __HAVE_BUILTIN_BSWAP32__ +#define __HAVE_BUILTIN_BSWAP64__ +#define __HAVE_BUILTIN_BSWAP16__ +#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */ + #if __has_feature(undefined_behavior_sanitizer) /* GCC does not have __SANITIZE_UNDEFINED__ */ #define __no_sanitize_undefined \ _

3 years, 10 months

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Linux-stable-mirror March 2021