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v4.4-rt build: 0 failures 2 warnings (v4.4.19-rt27-313-gc12d36b)

by Build bot for Mark Brown

Tree/Branch: v4.4-rt Git describe: v4.4.19-rt27-313-gc12d36b Commit: c12d36b160 Linux 4.4.21-rt30 Build Time: 79 min 31 sec Passed: 9 / 9 (100.00 %) Failed: 0 / 9 ( 0.00 %) Errors: 0 Warnings: 2 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 1 warnings 0 mismatches : arm64-allnoconfig 1 warnings 0 mismatches : arm64-allmodconfig 1 warnings 0 mismatches : arm-multi_v5_defconfig 2 warnings 0 mismatches : arm-multi_v7_defconfig 1 warnings 0 mismatches : x86_64-defconfig 1 warnings 0 mismatches : arm-allmodconfig 1 warnings 0 mismatches : arm-allnoconfig 1 warnings 0 mismatches : x86_64-allnoconfig 2 warnings 0 mismatches : arm64-defconfig ------------------------------------------------------------------------------- Warnings Summary: 2 9 ../kernel/sched/core.c:3477:12: warning: 'preemptible_lazy' defined but not used [-Wunused-function] 2 ../include/linux/spinlock.h:246:3: warning: 'flags' may be used uninitialized in this function [-Wmaybe-uninitialized] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allnoconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../kernel/sched/core.c:3477:12: warning: 'preemptible_lazy' defined but not used [-Wunused-function] ------------------------------------------------------------------------------- arm64-allmodconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../kernel/sched/core.c:3477:12: warning: 'preemptible_lazy' defined but not used [-Wunused-function] ------------------------------------------------------------------------------- arm-multi_v5_defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../kernel/sched/core.c:3477:12: warning: 'preemptible_lazy' defined but not used [-Wunused-function] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: ../kernel/sched/core.c:3477:12: warning: 'preemptible_lazy' defined but not used [-Wunused-function] ../include/linux/spinlock.h:246:3: warning: 'flags' may be used uninitialized in this function [-Wmaybe-uninitialized] ------------------------------------------------------------------------------- x86_64-defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../kernel/sched/core.c:3477:12: warning: 'preemptible_lazy' defined but not used [-Wunused-function] ------------------------------------------------------------------------------- arm-allmodconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../kernel/sched/core.c:3477:12: warning: 'preemptible_lazy' defined but not used [-Wunused-function] ------------------------------------------------------------------------------- arm-allnoconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../kernel/sched/core.c:3477:12: warning: 'preemptible_lazy' defined but not used [-Wunused-function] ------------------------------------------------------------------------------- x86_64-allnoconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../kernel/sched/core.c:3477:12: warning: 'preemptible_lazy' defined but not used [-Wunused-function] ------------------------------------------------------------------------------- arm64-defconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: ../kernel/sched/core.c:3477:12: warning: 'preemptible_lazy' defined but not used [-Wunused-function] ../include/linux/spinlock.h:246:3: warning: 'flags' may be used uninitialized in this function [-Wmaybe-uninitialized] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches:

9 years

next-20160921 build: 2 failures 4 warnings (next-20160921)

by Build bot for Mark Brown

Tree/Branch: next-20160921 Git describe: next-20160921 Commit: 4fbbc83e89 Add linux-next specific files for 20160921 Build Time: 85 min 15 sec Passed: 8 / 10 ( 80.00 %) Failed: 2 / 10 ( 20.00 %) Errors: 4 Warnings: 4 Section Mismatches: 0 Failed defconfigs: arm64-allmodconfig arm-allmodconfig Errors: arm64-allmodconfig ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/lov/lov.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/llite/lustre.ko] undefined! ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! arm-allmodconfig ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/lov/lov.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/llite/lustre.ko] undefined! ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 6 warnings 0 mismatches : arm-multi_v5_defconfig 7 warnings 0 mismatches : arm-multi_v7_defconfig 4 warnings 0 mismatches : arm-allmodconfig 3 warnings 0 mismatches : arm-multi_v4t_defconfig 3 warnings 0 mismatches : arm-allnoconfig ------------------------------------------------------------------------------- Errors summary: 4 2 ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! 2 ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/lov/lov.ko] undefined! 2 ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/llite/lustre.ko] undefined! 2 ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! Warnings Summary: 4 7 <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] 7 <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] 7 <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] 2 ../drivers/dma/imx-sdma.c:673:13: warning: 'sdma_handle_channel_loop' defined but not used [-Wunused-function] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : FAIL, 4 errors, 0 warnings, 0 section mismatches Errors: ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/lov/lov.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/llite/lustre.ko] undefined! ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! ------------------------------------------------------------------------------- arm-multi_v5_defconfig : PASS, 0 errors, 6 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 7 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ../drivers/dma/imx-sdma.c:673:13: warning: 'sdma_handle_channel_loop' defined but not used [-Wunused-function] <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm-allmodconfig : FAIL, 4 errors, 4 warnings, 0 section mismatches Errors: ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/lov/lov.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/llite/lustre.ko] undefined! ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ../drivers/dma/imx-sdma.c:673:13: warning: 'sdma_handle_channel_loop' defined but not used [-Wunused-function] ------------------------------------------------------------------------------- arm-multi_v4t_defconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm-allnoconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: x86_64-allnoconfig arm64-allnoconfig x86_64-defconfig arm64-defconfig

9 years

master build: 0 failures 0 warnings (v4.8-rc7-42-g7d1e042)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.8-rc7-42-g7d1e042 Commit: 7d1e042314 Merge tag 'usercopy-v4.8-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Build Time: 92 min 35 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

9 years

android conflict solution review

by Alex Shi

Hi Amit, Please review this conflict solution. Regards alex commit 5f87c475f82a75e10bc6e249b7471349f1ef1636 Merge: d3a1d03 d2d693d Author: Alex Shi <alex.shi(a)linaro.org> Date: Tue Sep 20 15:18:54 2016 +0800 Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android Conflicts: in fs/proc/task_mmu.c: looks like vma_get_anon_name() want have a name for anonymous vma when there is no name used in vma. commit: 586278d78bf The name show is after any other names, so it maybe covered. but anyway, it just a show here. diff --cc Documentation/filesystems/proc.txt index 1c42519,6716413..fea4777 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@@ -379,11 -378,8 +379,10 @@@ is not associated with a file [heap] = the heap of the program [stack] = the stack of the main process - [stack:1001] = the stack of the thread with tid 1001 [vdso] = the "virtual dynamic shared object", the kernel system call handler + [anon:<name>] = an anonymous mapping that has been + named by userspace or if empty, the mapping is anonymous. diff --cc fs/proc/task_mmu.c index 3e97da3,d598b9c..200e3b2 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@@ -387,27 -341,8 +391,14 @@@ show_map_vma(struct seq_file *m, struc goto done; } - tid = pid_of_stack(priv, vma, is_pid); - if (tid != 0) { - /* - * Thread stack in /proc/PID/task/TID/maps or - * the main process stack. - */ - if (!is_pid || (vma->vm_start <= mm->start_stack && - vma->vm_end >= mm->start_stack)) { - name = "[stack]"; - } else { - /* Thread stack in /proc/PID/maps */ - seq_pad(m, ' '); - seq_printf(m, "[stack:%d]", tid); - } - if (is_stack(priv, vma, is_pid)) ++ if (is_stack(priv, vma, is_pid)) { + name = "[stack]"; + goto done; + } - + if (vma_get_anon_name(vma)) { + seq_pad(m, ' '); + seq_print_vma_name(m, vma); + } } done:

9 years

next-20160920 build: 2 failures 5 warnings (next-20160920)

by Build bot for Mark Brown

Tree/Branch: next-20160920 Git describe: next-20160920 Commit: 6b7f746a58 Add linux-next specific files for 20160920 Build Time: 84 min 53 sec Passed: 8 / 10 ( 80.00 %) Failed: 2 / 10 ( 20.00 %) Errors: 4 Warnings: 5 Section Mismatches: 0 Failed defconfigs: arm64-allmodconfig arm-allmodconfig Errors: arm64-allmodconfig ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/lov/lov.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/llite/lustre.ko] undefined! ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! arm-allmodconfig ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/lov/lov.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/llite/lustre.ko] undefined! ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 1 warnings 0 mismatches : arm64-allmodconfig 6 warnings 0 mismatches : arm-multi_v5_defconfig 7 warnings 0 mismatches : arm-multi_v7_defconfig 5 warnings 0 mismatches : arm-allmodconfig 3 warnings 0 mismatches : arm-allnoconfig 3 warnings 0 mismatches : arm-multi_v4t_defconfig 1 warnings 0 mismatches : arm64-defconfig ------------------------------------------------------------------------------- Errors summary: 4 2 ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! 2 ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/lov/lov.ko] undefined! 2 ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/llite/lustre.ko] undefined! 2 ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! Warnings Summary: 5 7 <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] 7 <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] 7 <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] 3 ../drivers/mmc/host/meson-gxbb.c:411:22: warning: unused variable 'cmd' [-Wunused-variable] 2 ../drivers/dma/imx-sdma.c:673:13: warning: 'sdma_handle_channel_loop' defined but not used [-Wunused-function] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : FAIL, 4 errors, 1 warnings, 0 section mismatches Errors: ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/lov/lov.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/llite/lustre.ko] undefined! ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! Warnings: ../drivers/mmc/host/meson-gxbb.c:411:22: warning: unused variable 'cmd' [-Wunused-variable] ------------------------------------------------------------------------------- arm-multi_v5_defconfig : PASS, 0 errors, 6 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 7 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ../drivers/dma/imx-sdma.c:673:13: warning: 'sdma_handle_channel_loop' defined but not used [-Wunused-function] <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm-allmodconfig : FAIL, 4 errors, 5 warnings, 0 section mismatches Errors: ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/lov/lov.ko] undefined! ERROR: "lustre_swab_lov_mds_md" [drivers/staging/lustre/lustre/llite/lustre.ko] undefined! ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ../drivers/dma/imx-sdma.c:673:13: warning: 'sdma_handle_channel_loop' defined but not used [-Wunused-function] ../drivers/mmc/host/meson-gxbb.c:411:22: warning: unused variable 'cmd' [-Wunused-variable] ------------------------------------------------------------------------------- arm-allnoconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm-multi_v4t_defconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm64-defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../drivers/mmc/host/meson-gxbb.c:411:22: warning: unused variable 'cmd' [-Wunused-variable] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: x86_64-allnoconfig arm64-allnoconfig x86_64-defconfig

9 years

[RESEND PATCH] arm64: kgdb: fix single stepping

by AKASHI Takahiro

Jason, Could you please review my patch below? See also arm64 maintainer's comment: http://lists.infradead.org/pipermail/linux-arm-kernel/2015-January/313712.h… Thanks, -Takahiro AKASHI I tried to verify kgdb in vanilla kernel on fast model, but it seems that the single stepping with kgdb doesn't work correctly since its first appearance at v3.15. On v3.15, 'stepi' command after breaking the kernel at some breakpoint steps forward to the next instruction, but the succeeding 'stepi' never goes beyond that. On v3.16, 'stepi' moves forward and stops at the next instruction just after enable_dbg in el1_dbg, and never goes beyond that. This variance of behavior seems to come in with the following patch in v3.16: commit 2a2830703a23 ("arm64: debug: avoid accessing mdscr_el1 on fault paths where possible") This patch (1) moves kgdb_disable_single_step() from 'c' command handling to single step handler. This makes sure that single stepping gets effective at every 's' command. Please note that, under the current implementation, single step bit in spsr, which is cleared by the first single stepping, will not be set again for the consecutive 's' commands because single step bit in mdscr is still kept on (that is, kernel_active_single_step() in kgdb_arch_handle_exception() is true). (2) re-implements kgdb_roundup_cpus() because the current implementation enabled interrupts naively. See below. (3) removes 'enable_dbg' in el1_dbg. Single step bit in mdscr is turned on in do_handle_exception()-> kgdb_handle_expection() before returning to debugged context, and if debug exception is enabled in el1_dbg, we will see unexpected single- stepping in el1_dbg. Since v3.18, the following patch does the same: commit 1059c6bf8534 ("arm64: debug: don't re-enable debug exceptions on return from el1_dbg) (4) masks interrupts while single-stepping one instruction. If an interrupt is caught during processing a single-stepping, debug exception is unintentionally enabled by el1_irq's 'enable_dbg' before returning to debugged context. Thus, like in (2), we will see unexpected single-stepping in el1_irq. Basically (1) and (2) are for v3.15, (3) and (4) for v3.1[67]. * issue fixed by (2): Without (2), we would see another problem if a breakpoint is set at interrupt-sensible places, like gic_handle_irq(): KGDB: re-enter error: breakpoint removed ffffffc000081258 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 650 at kernel/debug/debug_core.c:435 kgdb_handle_exception+0x1dc/0x1f4() Modules linked in: CPU: 0 PID: 650 Comm: sh Not tainted 3.17.0-rc2+ #177 Call trace: [<ffffffc000087fac>] dump_backtrace+0x0/0x130 [<ffffffc0000880ec>] show_stack+0x10/0x1c [<ffffffc0004d683c>] dump_stack+0x74/0xb8 [<ffffffc0000ab824>] warn_slowpath_common+0x8c/0xb4 [<ffffffc0000ab90c>] warn_slowpath_null+0x14/0x20 [<ffffffc000121bfc>] kgdb_handle_exception+0x1d8/0x1f4 [<ffffffc000092ffc>] kgdb_brk_fn+0x18/0x28 [<ffffffc0000821c8>] brk_handler+0x9c/0xe8 [<ffffffc0000811e8>] do_debug_exception+0x3c/0xac Exception stack(0xffffffc07e027650 to 0xffffffc07e027770) ... [<ffffffc000083cac>] el1_dbg+0x14/0x68 [<ffffffc00012178c>] kgdb_cpu_enter+0x464/0x5c0 [<ffffffc000121bb4>] kgdb_handle_exception+0x190/0x1f4 [<ffffffc000092ffc>] kgdb_brk_fn+0x18/0x28 [<ffffffc0000821c8>] brk_handler+0x9c/0xe8 [<ffffffc0000811e8>] do_debug_exception+0x3c/0xac Exception stack(0xffffffc07e027ac0 to 0xffffffc07e027be0) ... [<ffffffc000083cac>] el1_dbg+0x14/0x68 [<ffffffc00032e4b4>] __handle_sysrq+0x11c/0x190 [<ffffffc00032e93c>] write_sysrq_trigger+0x4c/0x60 [<ffffffc0001e7d58>] proc_reg_write+0x54/0x84 [<ffffffc000192fa4>] vfs_write+0x98/0x1c8 [<ffffffc0001939b0>] SyS_write+0x40/0xa0 Once some interrupt occurs, a breakpoint at gic_handle_irq() triggers kgdb. Kgdb then calls kgdb_roundup_cpus() to sync with other cpus. Current kgdb_roundup_cpus() unmasks interrupts temporarily to use smp_call_function(). This eventually allows another interrupt to occur and likely results in hitting a breakpoint at gic_handle_irq() again since debug exception is always enabled in el1_irq. We can avoid this issue by specifying "nokgdbroundup" in kernel parameter, but this will also leave other cpus be in unknown state in terms of kgdb, and may result in interfering with kgdb activity. Signed-off-by: AKASHI Takahiro <takahiro.akashi(a)linaro.org> --- arch/arm64/kernel/kgdb.c | 60 +++++++++++++++++++++++++++++++++++----------- 1 file changed, 46 insertions(+), 14 deletions(-) diff --git a/arch/arm64/kernel/kgdb.c b/arch/arm64/kernel/kgdb.c index a0d10c5..81b5910 100644 --- a/arch/arm64/kernel/kgdb.c +++ b/arch/arm64/kernel/kgdb.c @@ -19,9 +19,13 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <linux/cpumask.h> #include <linux/irq.h> +#include <linux/irq_work.h> #include <linux/kdebug.h> #include <linux/kgdb.h> +#include <linux/percpu.h> +#include <asm/ptrace.h> #include <asm/traps.h> struct dbg_reg_def_t dbg_reg_def[DBG_MAX_REG_NUM] = { @@ -95,6 +99,9 @@ struct dbg_reg_def_t dbg_reg_def[DBG_MAX_REG_NUM] = { { "fpcr", 4, -1 }, }; +static DEFINE_PER_CPU(unsigned int, kgdb_pstate); +static DEFINE_PER_CPU(struct irq_work, kgdb_irq_work); + char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs) { if (regno >= DBG_MAX_REG_NUM || regno < 0) @@ -176,18 +183,14 @@ int kgdb_arch_handle_exception(int exception_vector, int signo, * over and over again. */ kgdb_arch_update_addr(linux_regs, remcom_in_buffer); - atomic_set(&kgdb_cpu_doing_single_step, -1); - kgdb_single_step = 0; - - /* - * Received continue command, disable single step - */ - if (kernel_active_single_step()) - kernel_disable_single_step(); err = 0; break; case 's': + /* mask interrupts while single stepping */ + __this_cpu_write(kgdb_pstate, linux_regs->pstate); + linux_regs->pstate |= PSR_I_BIT; + /* * Update step address value with address passed * with step packet. @@ -198,8 +201,6 @@ int kgdb_arch_handle_exception(int exception_vector, int signo, */ kgdb_arch_update_addr(linux_regs, remcom_in_buffer); atomic_set(&kgdb_cpu_doing_single_step, raw_smp_processor_id()); - kgdb_single_step = 1; - /* * Enable single step handling */ @@ -229,6 +230,18 @@ static int kgdb_compiled_brk_fn(struct pt_regs *regs, unsigned int esr) static int kgdb_step_brk_fn(struct pt_regs *regs, unsigned int esr) { + unsigned int pstate; + + kernel_disable_single_step(); + atomic_set(&kgdb_cpu_doing_single_step, -1); + + /* restore interrupt mask status */ + pstate = __this_cpu_read(kgdb_pstate); + if (pstate & PSR_I_BIT) + regs->pstate |= PSR_I_BIT; + else + regs->pstate &= ~PSR_I_BIT; + kgdb_handle_exception(1, SIGTRAP, 0, regs); return 0; } @@ -249,16 +262,27 @@ static struct step_hook kgdb_step_hook = { .fn = kgdb_step_brk_fn }; -static void kgdb_call_nmi_hook(void *ignored) +static void kgdb_roundup_hook(struct irq_work *work) { kgdb_nmicallback(raw_smp_processor_id(), get_irq_regs()); } void kgdb_roundup_cpus(unsigned long flags) { - local_irq_enable(); - smp_call_function(kgdb_call_nmi_hook, NULL, 0); - local_irq_disable(); + int cpu; + struct cpumask mask; + struct irq_work *work; + + mask = *cpu_online_mask; + cpumask_clear_cpu(smp_processor_id(), &mask); + cpu = cpumask_first(&mask); + if (cpu >= nr_cpu_ids) + return; + + for_each_cpu(cpu, &mask) { + work = per_cpu_ptr(&kgdb_irq_work, cpu); + irq_work_queue_on(work, cpu); + } } static int __kgdb_notify(struct die_args *args, unsigned long cmd) @@ -299,6 +323,8 @@ static struct notifier_block kgdb_notifier = { int kgdb_arch_init(void) { int ret = register_die_notifier(&kgdb_notifier); + int cpu; + struct irq_work *work; if (ret != 0) return ret; @@ -306,6 +332,12 @@ int kgdb_arch_init(void) register_break_hook(&kgdb_brkpt_hook); register_break_hook(&kgdb_compiled_brkpt_hook); register_step_hook(&kgdb_step_hook); + + for_each_possible_cpu(cpu) { + work = per_cpu_ptr(&kgdb_irq_work, cpu); + init_irq_work(work, kgdb_roundup_hook); + } + return 0; } -- 1.7.9.5

9 years

master build: 0 failures 0 warnings (v4.8-rc7-37-gd2ffb01)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.8-rc7-37-gd2ffb01 Commit: d2ffb0103a Merge branch 'akpm' (patches from Andrew) Build Time: 92 min 43 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

9 years

master build: 0 failures 0 warnings (v4.8-rc7-15-g7bb91e0)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.8-rc7-15-g7bb91e0 Commit: 7bb91e0673 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Build Time: 92 min 17 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

9 years

next-20160914 build: 2 failures 3 warnings (next-20160914)

by Build bot for Mark Brown

Tree/Branch: next-20160914 Git describe: next-20160914 Commit: b224027bb7 Add linux-next specific files for 20160914 Build Time: 83 min 32 sec Passed: 8 / 10 ( 80.00 %) Failed: 2 / 10 ( 20.00 %) Errors: 1 Warnings: 3 Section Mismatches: 0 Failed defconfigs: arm64-allmodconfig arm-allmodconfig Errors: arm64-allmodconfig ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! arm-allmodconfig ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 6 warnings 0 mismatches : arm-multi_v5_defconfig 6 warnings 0 mismatches : arm-multi_v7_defconfig 3 warnings 0 mismatches : arm-allmodconfig 3 warnings 0 mismatches : arm-multi_v4t_defconfig 3 warnings 0 mismatches : arm-allnoconfig ------------------------------------------------------------------------------- Errors summary: 1 2 ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! Warnings Summary: 3 7 <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] 7 <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] 7 <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : FAIL, 1 errors, 0 warnings, 0 section mismatches Errors: ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! ------------------------------------------------------------------------------- arm-multi_v5_defconfig : PASS, 0 errors, 6 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 6 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm-allmodconfig : FAIL, 1 errors, 3 warnings, 0 section mismatches Errors: ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm-multi_v4t_defconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm-allnoconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: x86_64-allnoconfig arm64-allnoconfig x86_64-defconfig arm64-defconfig

9 years

next-20160919 build: 2 failures 5 warnings (next-20160919)

by Build bot for Mark Brown

Tree/Branch: next-20160919 Git describe: next-20160919 Commit: 3551fc28a8 Add linux-next specific files for 20160919 Build Time: 85 min 56 sec Passed: 8 / 10 ( 80.00 %) Failed: 2 / 10 ( 20.00 %) Errors: 2 Warnings: 5 Section Mismatches: 0 Failed defconfigs: arm64-allmodconfig arm-allmodconfig Errors: arm64-allmodconfig ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! arm-allmodconfig ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 1 warnings 0 mismatches : arm64-allmodconfig 6 warnings 0 mismatches : arm-multi_v5_defconfig 7 warnings 0 mismatches : arm-multi_v7_defconfig 5 warnings 0 mismatches : arm-allmodconfig 3 warnings 0 mismatches : arm-allnoconfig 3 warnings 0 mismatches : arm-multi_v4t_defconfig 1 warnings 0 mismatches : arm64-defconfig ------------------------------------------------------------------------------- Errors summary: 2 2 ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! 2 ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! Warnings Summary: 5 7 <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] 7 <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] 7 <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] 3 ../drivers/mmc/host/meson-gxbb.c:411:22: warning: unused variable 'cmd' [-Wunused-variable] 2 ../drivers/dma/imx-sdma.c:673:13: warning: 'sdma_handle_channel_loop' defined but not used [-Wunused-function] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allmodconfig : FAIL, 2 errors, 1 warnings, 0 section mismatches Errors: ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! Warnings: ../drivers/mmc/host/meson-gxbb.c:411:22: warning: unused variable 'cmd' [-Wunused-variable] ------------------------------------------------------------------------------- arm-multi_v5_defconfig : PASS, 0 errors, 6 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 7 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ../drivers/dma/imx-sdma.c:673:13: warning: 'sdma_handle_channel_loop' defined but not used [-Wunused-function] <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm-allmodconfig : FAIL, 2 errors, 5 warnings, 0 section mismatches Errors: ERROR: "musb_root_disconnect" [drivers/usb/musb/sunxi.ko] undefined! ERROR: "irq_set_parent" [drivers/mfd/tps65217.ko] undefined! Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ../drivers/dma/imx-sdma.c:673:13: warning: 'sdma_handle_channel_loop' defined but not used [-Wunused-function] ../drivers/mmc/host/meson-gxbb.c:411:22: warning: unused variable 'cmd' [-Wunused-variable] ------------------------------------------------------------------------------- arm-allnoconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm-multi_v4t_defconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] ------------------------------------------------------------------------------- arm64-defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../drivers/mmc/host/meson-gxbb.c:411:22: warning: unused variable 'cmd' [-Wunused-variable] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: x86_64-allnoconfig arm64-allnoconfig x86_64-defconfig

9 years

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