November 2022 - Linux-stable-mirror

[PATCH] virt: sev-guest: fix kconfig warnings

by Randy Dunlap

Fix the SEV_GUEST Kconfig block to eliminate kconfig unmet dependency warnings: WARNING: unmet direct dependencies detected for CRYPTO_GCM Depends on [n]: CRYPTO [=n] Selected by [y]: - SEV_GUEST [=y] && VIRT_DRIVERS [=y] && AMD_MEM_ENCRYPT [=y] WARNING: unmet direct dependencies detected for CRYPTO_AEAD2 Depends on [n]: CRYPTO [=n] Selected by [y]: - SEV_GUEST [=y] && VIRT_DRIVERS [=y] && AMD_MEM_ENCRYPT [=y] Fixes: fce96cf04430 ("virt: Add SEV-SNP guest driver") Reported-by: kernel test robot <lkp(a)intel.com> Signed-off-by: Randy Dunlap <rdunlap(a)infradead.org> Cc: stable(a)vger.kernel.org Cc: Brijesh Singh <brijesh.singh(a)amd.com> Cc: Paul Gazzillo <paul(a)pgazz.com> Cc: Necip Fazil Yildiran <fazilyildiran(a)gmail.com> Cc: Borislav Petkov <bp(a)suse.de> Cc: Tom Lendacky <thomas.lendacky(a)amd.com> Cc: linux-crypto(a)vger.kernel.org --- drivers/virt/coco/sev-guest/Kconfig | 1 + 1 file changed, 1 insertion(+) --- a/drivers/virt/coco/sev-guest/Kconfig +++ b/drivers/virt/coco/sev-guest/Kconfig @@ -2,6 +2,7 @@ config SEV_GUEST tristate "AMD SEV Guest driver" default m depends on AMD_MEM_ENCRYPT + select CRYPTO select CRYPTO_AEAD2 select CRYPTO_GCM help

1 year, 11 months

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[PATCH 1/2] perf/x86/intel: Fix pebs event constraints for ICL

by kan.liang＠linux.intel.com

From: Kan Liang <kan.liang(a)linux.intel.com> According to the latest event list, update the MEM_INST_RETIRED events which support the DataLA facility. Fixes: 6017608936c1 ("perf/x86/intel: Add Icelake support") Reported-by: Jannis Klinkenberg <jannis.klinkenberg(a)rwth-aachen.de> Signed-off-by: Kan Liang <kan.liang(a)linux.intel.com> Cc: stable(a)vger.kernel.org --- arch/x86/events/intel/ds.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c index f141cc7b8847..26323fea3a65 100644 --- a/arch/x86/events/intel/ds.c +++ b/arch/x86/events/intel/ds.c @@ -982,8 +982,13 @@ struct event_constraint intel_icl_pebs_event_constraints[] = { INTEL_FLAGS_UEVENT_CONSTRAINT(0x0400, 0x800000000ULL), /* SLOTS */ INTEL_PLD_CONSTRAINT(0x1cd, 0xff), /* MEM_TRANS_RETIRED.LOAD_LATENCY */ - INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_LD(0x1d0, 0xf), /* MEM_INST_RETIRED.LOAD */ - INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_ST(0x2d0, 0xf), /* MEM_INST_RETIRED.STORE */ + INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_LD(0x11d0, 0xf), /* MEM_INST_RETIRED.STLB_MISS_LOADS */ + INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_ST(0x12d0, 0xf), /* MEM_INST_RETIRED.STLB_MISS_STORES */ + INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_LD(0x21d0, 0xf), /* MEM_INST_RETIRED.LOCK_LOADS */ + INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_LD(0x41d0, 0xf), /* MEM_INST_RETIRED.SPLIT_LOADS */ + INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_ST(0x42d0, 0xf), /* MEM_INST_RETIRED.SPLIT_STORES */ + INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_LD(0x81d0, 0xf), /* MEM_INST_RETIRED.ALL_LOADS */ + INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_ST(0x82d0, 0xf), /* MEM_INST_RETIRED.ALL_STORES */ INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_LD_RANGE(0xd1, 0xd4, 0xf), /* MEM_LOAD_*_RETIRED.* */ -- 2.35.1

1 year, 11 months

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[PATCH] perf/x86/intel: Add Cooper Lake stepping to isolation_ucodes[]

by kan.liang＠linux.intel.com

From: Kan Liang <kan.liang(a)linux.intel.com> The intel_pebs_isolation quirk checks both model number and stepping. Cooper Lake has a different stepping (11) than the other Skylake Xeon. It cannot benefit from the optimization in commit 9b545c04abd4f ("perf/x86/kvm: Avoid unnecessary work in guest filtering"). Add the stepping of Cooper Lake into the isolation_ucodes[] table. Signed-off-by: Kan Liang <kan.liang(a)linux.intel.com> Cc: stable(a)vger.kernel.org --- arch/x86/events/intel/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index d8af75466ee9..dfd2c124cdf8 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -4908,6 +4908,7 @@ static const struct x86_cpu_desc isolation_ucodes[] = { INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE_X, 5, 0x00000000), INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE_X, 6, 0x00000000), INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE_X, 7, 0x00000000), + INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE_X, 11, 0x00000000), INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE_L, 3, 0x0000007c), INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE, 3, 0x0000007c), INTEL_CPU_DESC(INTEL_FAM6_KABYLAKE, 9, 0x0000004e), -- 2.35.1

1 year, 11 months

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Re: qemu-i386: perf: BUG: kernel NULL pointer dereference, address: 00000148

by Thorsten Leemhuis

[just writing this to CC the stable list and Greg, to make sure they are in the loop before 6.0.7 is released] [/me wonders why that wasn't done and hopes there isn't a good reason why it wasn't done] On 02.11.22 14:12, Naresh Kamboju wrote: > Following kernel BUG: noticed on qemu-i386 while running perf test suite > on stable-rc 6.0.7-rc1 the image was built with gcc-11. > > The System did not recover after the crash. > > Reported-by: Linux Kernel Functional Testing <lkft(a)linaro.org> > > syscalls:sys_enter_openat event fields: Ok > 17: Setup struct perf_event_attr : > --- start --- > test child forked, pid 433 > Using CPUID AuthenticAMD-23-1-2 > /usr/libexec/perf-core/tests/attr.py:142: DeprecationWarning: The > SafeConfigParser class has been renamed to ConfigParser in Python 3.2. > This alias will be removed in Python 3.12. Use ConfigParser directly > instead. > parser = configparser.SafeConfigParser() > running '/usr/libexec/perf-core/tests/attr/test-record-no-samples' > /usr/libexec/perf-core/tests/attr.py:201: DeprecationWarning: The > SafeConfigParser class has been renamed to ConfigParser in Python 3.2. > This alias will be removed in Python 3.12. Use ConfigParser directly > instead. > parser_event = configparser.SafeConfigParser() > /usr/libexec/perf-core/tests/attr.py:215: DeprecationWarning: The > SafeConfigParser class has been renamed to ConfigParser in Python 3.2. > This alias will be removed in Python 3.12. Use ConfigParser directly > instead. > parser_base = configparser.SafeConfigParser() > running '/usr/libexec/perf-core/tests/attr/test-record-graph-fp-aarch64' > test limitation 'aarch64' > skipped [i686] '/usr/libexec/perf-core/tests/attr/test-record-graph-fp-aarch64' > running '/usr/libexec/perf-core/tests/attr/test-record-branch-filter-any_ret' > unsupp '/usr/libexec/perf-core/tests/attr/test-record-branch-filter-any_ret' > running '/usr/libexec/perf-core/tests/attr/test-record-branch-filter-ind_call' > unsupp '/usr/libexec/perf-core/tests/attr/test-record-branch-filter-ind_call' > running '/usr/libexec/perf-core/tests/attr/test-record-spe-physical-address' > test limitation 'aarch64' > skipped [i686] '/usr/libexec/perf-core/tests/attr/test-record-spe-physical-address' > running '/usr/libexec/perf-core/tests/attr/test-record-C0' > [ 115.046512] perf: interrupt took too long (11109 > 11096), lowering > kernel.perf_event_max_sample_rate to 18000 > running '/usr/libexec/perf-core/tests/attr/test-record-group' > [ 116.006600] BUG: kernel NULL pointer dereference, address: 00000148 > [ 116.008309] #PF: supervisor read access in kernel mode > [ 116.009527] #PF: error_code(0x0000) - not-present page > [ 116.010809] *pde = 00000000 > [ 116.011454] Oops: 0000 [#1] PREEMPT SMP > [ 116.012144] CPU: 2 PID: 449 Comm: perf-exec Not tainted 6.0.7-rc1 #1 > [ 116.013256] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), > BIOS 1.12.0-1 04/01/2014 > [ 116.014710] EIP: x86_pmu_enable_event+0x4a/0x190 > [ 116.015617] Code: 64 a1 10 2c 8d c6 85 c0 75 16 8b 5d f4 8b 75 f8 > 8b 7d fc 89 ec 5d c3 8d b4 26 00 00 00 00 66 90 b8 43 bb 49 c6 e8 56 > 13 fb 00 <8b> b3 48 01 00 00 b8 dc 39 8d c6 64 03 05 b0 28 8d c6 8b 38 > 85 f6 > [ 116.018642] EAX: 00000002 EBX: 00000000 ECX: c0010200 EDX: c649bb43 > [ 116.019709] ESI: f51c6b00 EDI: f51c6c00 EBP: c34e1da4 ESP: c34e1d88 > [ 116.020744] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00210002 > [ 116.021847] CR0: 80050033 CR2: 00000148 CR3: 03e07000 CR4: 003506d0 > [ 116.022930] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 > [ 116.023674] DR6: ffff4ff0 DR7: 00000400 > [ 116.024078] Call Trace: > [ 116.024348] amd_pmu_enable_all+0x3d/0x50 > [ 116.024776] x86_pmu_enable+0x17c/0x370 > [ 116.025179] ctx_resched+0xad/0xf0 > [ 116.025542] perf_event_exec+0x338/0x400 > [ 116.025956] begin_new_exec+0x548/0xac0 > [ 116.026358] load_elf_binary+0x2ad/0x1360 > [ 116.027063] ? __kernel_read+0x12c/0x220 > [ 116.027520] ? _raw_read_unlock+0x1d/0x40 > [ 116.027957] ? load_misc_binary+0x1eb/0x290 > [ 116.028404] ? trace_preempt_on+0x29/0xe0 > [ 116.028827] ? load_misc_binary+0x1eb/0x290 > [ 116.029287] ? preempt_count_sub+0xc1/0x110 > [ 116.029722] ? bprm_execve+0x256/0x650 > [ 116.030122] ? preempt_count_sub+0xc1/0x110 > [ 116.030600] bprm_execve+0x260/0x650 > [ 116.031006] do_execveat_common+0x13f/0x1b0 > [ 116.031482] __ia32_sys_execve+0x35/0x40 > [ 116.031897] __do_fast_syscall_32+0x4c/0xc0 > [ 116.032358] do_fast_syscall_32+0x32/0x70 > [ 116.032777] do_SYSENTER_32+0x15/0x20 > [ 116.033190] entry_SYSENTER_32+0x98/0xf1 > [ 116.033601] EIP: 0xb7eda549 > [ 116.033903] Code: Unable to access opcode bytes at RIP 0xb7eda51f. > [ 116.034576] EAX: ffffffda EBX: bfa6d940 ECX: bfa730f8 EDX: 08ea9dc0 > [ 116.035278] ESI: bfa73d61 EDI: bfa6d949 EBP: bfa6da38 ESP: bfa6d918 > [ 116.035927] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 007b EFLAGS: 00200296 > [ 116.036624] Modules linked in: > [ 116.036961] CR2: 0000000000000148 > [ 116.037315] ---[ end trace 0000000000000000 ]--- > [ 116.037753] EIP: x86_pmu_enable_event+0x4a/0x190 > [ 116.038190] Code: 64 a1 10 2c 8d c6 85 c0 75 16 8b 5d f4 8b 75 f8 > 8b 7d fc 89 ec 5d c3 8d b4 26 00 00 00 00 66 90 b8 43 bb 49 c6 e8 56 > 13 fb 00 <8b> b3 48 01 00 00 b8 dc 39 8d c6 64 03 05 b0 28 8d c6 8b 38 > 85 f6 > [ 116.039918] EAX: 00000002 EBX: 00000000 ECX: c0010200 EDX: c649bb43 > [ 116.040509] ESI: f51c6b00 EDI: f51c6c00 EBP: c34e1da4 ESP: c34e1d88 > [ 116.041092] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00210002 > [ 116.041720] CR0: 80050033 CR2: b7eda51f CR3: 03e07000 CR4: 003506d0 > [ 116.042301] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 > [ 116.042895] DR6: ffff4ff0 DR7: 00000400 > [ 116.043254] note: perf-exec[449] exited with preempt_count 2 > [ 136.996781] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: > [ 136.998413] rcu: 2-...0: (1 ticks this GP) idle=ed7c/1/0x40000000 > softirq=4094/4094 fqs=4847 > [ 137.000598] (detected by 1, t=21002 jiffies, g=7361, q=198 ncpus=4) > [ 137.002418] Sending NMI from CPU 1 to CPUs 2: > [ 137.003676] NMI backtrace for cpu 2 > [ 137.003689] CPU: 2 PID: 449 Comm: perf-exec Tainted: G D > 6.0.7-rc1 #1 > [ 137.003694] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), > BIOS 1.12.0-1 04/01/2014 > [ 137.003697] EIP: queued_spin_lock_slowpath+0x3a/0x2d0 > [ 137.003710] Code: 3e 8d 74 26 00 ba 01 00 00 00 8d b6 00 00 00 00 > 8b 03 85 c0 75 12 f0 0f b1 13 85 c0 75 f2 58 5b 5e 5f 5d c3 8d 74 26 > 00 f3 90 <eb> e4 8d 74 26 00 81 fa 00 01 00 00 74 50 81 e2 00 ff ff ff > 85 d2 > [ 137.003712] EAX: 00000001 EBX: c331e0c4 ECX: 00000000 EDX: 00000001 > [ 137.003714] ESI: 00000002 EDI: c331e0c0 EBP: c34e1d94 ESP: c34e1d84 > [ 137.003716] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00200002 > [ 137.003720] CR0: 80050033 CR2: b7eda51f CR3: 03e07000 CR4: 003506d0 > [ 137.003723] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 > [ 137.003724] DR6: ffff4ff0 DR7: 00000400 > [ 137.003725] Call Trace: > [ 137.003731] _raw_spin_lock+0x31/0x40 > [ 137.003737] perf_event_task_tick+0x97/0x370 > [ 137.003743] ? task_tick_fair+0x77/0x2f0 > [ 137.003747] ? __wake_up+0x21/0x30 > [ 137.003751] ? update_rq_clock+0x39/0x200 > [ 137.003754] ? task_fork_fair+0x180/0x180 > [ 137.003756] scheduler_tick+0xbe/0x2b0 > [ 137.003760] ? task_fork_fair+0x180/0x180 > [ 137.003761] update_process_times+0x85/0x90 > [ 137.003766] tick_sched_handle+0x3d/0x60 > [ 137.003769] tick_sched_timer+0x92/0xb0 > [ 137.003771] __hrtimer_run_queues+0xb2/0x300 > [ 137.003774] ? tick_sched_do_timer+0xa0/0xa0 > [ 137.003776] hrtimer_interrupt+0x129/0x270 > [ 137.003778] ? _prb_read_valid+0x84/0x3c0 > [ 137.003783] ? sysvec_call_function_single+0x50/0x50 > [ 137.003785] __sysvec_apic_timer_interrupt+0x76/0x160 > [ 137.003791] ? debug_smp_processor_id+0x12/0x20 > [ 137.003793] sysvec_apic_timer_interrupt+0x31/0x50 > [ 137.003794] handle_exception+0x133/0x133 > [ 137.003796] EIP: _raw_spin_unlock_irq+0x16/0x40 > [ 137.003799] Code: c0 74 09 5d c3 8d b4 26 00 00 00 00 e8 73 25 00 > 00 5d c3 90 3e 8d 74 26 00 55 89 e5 c6 00 00 e8 c0 cb 25 ff fb b8 01 > 00 00 00 <e8> 45 b1 17 ff 64 a1 0c 77 8d c6 85 c0 74 0b 5d c3 8d b4 26 > 00 00 > [ 137.003801] EAX: 00000001 EBX: c26f24c0 ECX: c5111bf4 EDX: 00000001 > [ 137.003802] ESI: c26f24c0 EDI: 00000000 EBP: c34e1f4c ESP: c34e1f4c > [ 137.003803] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00200246 > [ 137.003805] ? do_exit+0x54/0x9c0 > [ 137.003809] ? sysvec_call_function_single+0x50/0x50 > [ 137.003811] ? sysvec_call_function_single+0x50/0x50 > [ 137.003812] ? _raw_spin_unlock_irq+0x16/0x40 > [ 137.003814] do_exit+0x54/0x9c0 > [ 137.003816] ? vprintk+0x55/0x60 > [ 137.003818] make_task_dead+0x56/0x60 > [ 137.003820] rewind_stack_and_make_dead+0x11/0x20 > [ 137.003824] EIP: 0xb7eda549 > [ 137.003837] Code: Unable to access opcode bytes at RIP 0xb7eda51f. > [ 137.003838] EAX: ffffffda EBX: bfa6d940 ECX: bfa730f8 EDX: 08ea9dc0 > [ 137.003839] ESI: bfa73d61 EDI: bfa6d949 EBP: bfa6da38 ESP: bfa6d918 > [ 137.003840] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 007b EFLAGS: 00200296 > [ 200.005419] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: > [ 200.010134] rcu: 2-...0: (1 ticks this GP) idle=ed7c/1/0x40000000 > softirq=4094/4094 fqs=19175 > [ 200.011177] (detected by 1, t=84017 jiffies, g=7361, q=436 ncpus=4) > [ 200.011949] Sending NMI from CPU 1 to CPUs 2: > [ 200.012561] NMI backtrace for cpu 2 > [ 200.012569] CPU: 2 PID: 449 Comm: perf-exec Tainted: G D > 6.0.7-rc1 #1 > [ 200.012572] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), > BIOS 1.12.0-1 04/01/2014 > [ 200.012574] EIP: queued_spin_lock_slowpath+0x3a/0x2d0 > [ 200.012583] Code: 3e 8d 74 26 00 ba 01 00 00 00 8d b6 00 00 00 00 > 8b 03 85 c0 75 12 f0 0f b1 13 85 c0 75 f2 58 5b 5e 5f 5d c3 8d 74 26 > 00 f3 90 <eb> e4 8d 74 26 00 81 fa 00 01 00 00 74 50 81 e2 00 ff ff ff > 85 d2 > [ 200.012585] EAX: 00000001 EBX: c331e0c4 ECX: 00000000 EDX: 00000001 > [ 200.012587] ESI: 00000002 EDI: c331e0c0 EBP: c34e1d94 ESP: c34e1d84 > [ 200.012588] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00200002 > [ 200.012592] CR0: 80050033 CR2: b7eda51f CR3: 03e07000 CR4: 003506d0 > [ 200.012595] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 > [ 200.012596] DR6: ffff4ff0 DR7: 00000400 > [ 200.012597] Call Trace: > [ 200.012601] _raw_spin_lock+0x31/0x40 > [ 200.012606] perf_event_task_tick+0x97/0x370 > [ 200.012610] ? task_tick_fair+0x77/0x2f0 > [ 200.012613] ? __wake_up+0x21/0x30 > [ 200.012616] ? update_rq_clock+0x39/0x200 > [ 200.012618] ? task_fork_fair+0x180/0x180 > [ 200.012620] scheduler_tick+0xbe/0x2b0 > [ 200.012622] ? task_fork_fair+0x180/0x180 > [ 200.012624] update_process_times+0x85/0x90 > [ 200.012627] tick_sched_handle+0x3d/0x60 > [ 200.012629] tick_sched_timer+0x92/0xb0 > [ 200.012631] __hrtimer_run_queues+0xb2/0x300 > [ 200.012633] ? tick_sched_do_timer+0xa0/0xa0 > [ 200.012635] hrtimer_interrupt+0x129/0x270 > [ 200.012638] ? _prb_read_valid+0x84/0x3c0 > [ 200.012641] ? sysvec_call_function_single+0x50/0x50 > [ 200.012643] __sysvec_apic_timer_interrupt+0x76/0x160 > [ 200.012647] ? debug_smp_processor_id+0x12/0x20 > [ 200.012648] sysvec_apic_timer_interrupt+0x31/0x50 > [ 200.012650] handle_exception+0x133/0x133 > > > metadata: > git_ref: linux-6.0.y > git_repo: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc > git_sha: 436175d0f780af8302164b3102ecf0ff99f7a376 > git_describe: v6.0.6-241-g436175d0f780 > kernel_version: 6.0.7-rc1 > kernel-config: https://builds.tuxbuild.com/2GyMhllOBAqVhs03YoIHIAE7E8c/config > build-url: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc/-/pipelines/6… > artifact-location: https://builds.tuxbuild.com/2GyMhllOBAqVhs03YoIHIAE7E8c > toolchain: gcc-11 > > Test full log link, > https://lkft.validation.linaro.org/scheduler/job/5799947#L16491 > > > -- > Linaro LKFT > https://lkft.linaro.org > >

1 year, 11 months

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+ mm-hugetlb_vmemmap-include-missing-linux-moduleparamh.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: mm: hugetlb_vmemmap: include missing linux/moduleparam.h has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-hugetlb_vmemmap-include-missing-linux-moduleparamh.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Vasily Gorbik <gor(a)linux.ibm.com> Subject: mm: hugetlb_vmemmap: include missing linux/moduleparam.h Date: Wed, 2 Nov 2022 19:09:17 +0100 The kernel test robot reported build failures with a 'randconfig' on s390: >> mm/hugetlb_vmemmap.c:421:11: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes] core_param(hugetlb_free_vmemmap, vmemmap_optimize_enabled, bool, 0); ^ Link: https://lore.kernel.org/linux-mm/202210300751.rG3UDsuc-lkp@intel.com/ Link: https://lkml.kernel.org/r/patch.git-296b83ca939b.your-ad-here.call-01667411… Fixes: 30152245c63b ("mm: hugetlb_vmemmap: replace early_param() with core_param()") Signed-off-by: Vasily Gorbik <gor(a)linux.ibm.com> Reported-by: kernel test robot <lkp(a)intel.com> Cc: Gerald Schaefer <gerald.schaefer(a)linux.ibm.com> Cc: Mike Kravetz <mike.kravetz(a)oracle.com> Cc: Muchun Song <songmuchun(a)bytedance.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/hugetlb_vmemmap.c | 1 + 1 file changed, 1 insertion(+) --- a/mm/hugetlb_vmemmap.c~mm-hugetlb_vmemmap-include-missing-linux-moduleparamh +++ a/mm/hugetlb_vmemmap.c @@ -11,6 +11,7 @@ #define pr_fmt(fmt) "HugeTLB: " fmt #include <linux/pgtable.h> +#include <linux/moduleparam.h> #include <linux/bootmem_info.h> #include <asm/pgalloc.h> #include <asm/tlbflush.h> _ Patches currently in -mm which might be from gor(a)linux.ibm.com are mm-hugetlb_vmemmap-include-missing-linux-moduleparamh.patch

1 year, 11 months

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+ mm-shmem-use-page_mapping-to-detect-page-cache-for-uffd-continue.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: mm/shmem: use page_mapping() to detect page cache for uffd continue has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-shmem-use-page_mapping-to-detect-page-cache-for-uffd-continue.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Peter Xu <peterx(a)redhat.com> Subject: mm/shmem: use page_mapping() to detect page cache for uffd continue Date: Wed, 2 Nov 2022 14:41:52 -0400 mfill_atomic_install_pte() checks page->mapping to detect whether one page is used in the page cache. However as pointed out by Matthew, the page can logically be a tail page rather than always the head in the case of uffd minor mode with UFFDIO_CONTINUE. It means we could wrongly install one pte with shmem thp tail page assuming it's an anonymous page. It's not that clear even for anonymous page, since normally anonymous pages also have page->mapping being setup with the anon vma. It's safe here only because the only such caller to mfill_atomic_install_pte() is always passing in a newly allocated page (mcopy_atomic_pte()), whose page->mapping is not yet setup. However that's not extremely obvious either. For either of above, use page_mapping() instead. Link: https://lkml.kernel.org/r/Y2K+y7wnhC4vbnP2@x1n Fixes: 153132571f02 ("userfaultfd/shmem: support UFFDIO_CONTINUE for shmem") Signed-off-by: Peter Xu <peterx(a)redhat.com> Reported-by: Matthew Wilcox <willy(a)infradead.org> Cc: Andrea Arcangeli <aarcange(a)redhat.com> Cc: Hugh Dickins <hughd(a)google.com> Cc: Axel Rasmussen <axelrasmussen(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/userfaultfd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/userfaultfd.c~mm-shmem-use-page_mapping-to-detect-page-cache-for-uffd-continue +++ a/mm/userfaultfd.c @@ -64,7 +64,7 @@ int mfill_atomic_install_pte(struct mm_s pte_t _dst_pte, *dst_pte; bool writable = dst_vma->vm_flags & VM_WRITE; bool vm_shared = dst_vma->vm_flags & VM_SHARED; - bool page_in_cache = page->mapping; + bool page_in_cache = page_mapping(page); spinlock_t *ptl; struct inode *inode; pgoff_t offset, max_off; _ Patches currently in -mm which might be from peterx(a)redhat.com are partly-revert-mm-thp-carry-over-dirty-bit-when-thp-splits-on-pmd.patch mm-shmem-use-page_mapping-to-detect-page-cache-for-uffd-continue.patch selftests-vm-use-memfd-for-uffd-hugetlb-tests.patch selftests-vm-use-memfd-for-hugetlb-madvise-test.patch selftests-vm-use-memfd-for-hugepage-mremap-test.patch selftests-vm-drop-mnt-point-for-hugetlb-in-run_vmtestssh.patch mm-hugetlb-unify-clearing-of-restorereserve-for-private-pages.patch revert-mm-uffd-fix-warning-without-pte_marker_uffd_wp-compiled-in.patch

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Re: [PATCH 6.0 000/240] 6.0.7-rc1 review

by Ronald Warsow

Hi Greg 6.0.7-rc1 compiles, boots and runs here on x86_64 (Intel i5-11400, Fedora 37 Beta) Thanks Tested-by: Ronald Warsow <rwarsow(a)gmx.de>

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[PATCH 5.4 0/1] Request to cherry-pick 3c52c6bb831f to 5.4.y

by Meena Shanmugam

The commit 3c52c6bb831f (tcp/udp: Fix memory leak in ipv6_renew_options()) fixes a memory leak reported by syzbot. This seems to be a good candidate for the stable trees. This patch didn't apply cleanly in 5.4 kernel, since release_sock() calls are changed to sockopt_release_sock() in the latest kernel versions. Kuniyuki Iwashima (1): tcp/udp: Fix memory leak in ipv6_renew_options(). net/ipv6/ipv6_sockglue.c | 7 +++++++ 1 file changed, 7 insertions(+) -- 2.38.1.273.g43a17bfeac-goog

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[PATCH AUTOSEL 5.19 01/10] signal: break out of wait loops on kthread_stop()

by Sasha Levin

From: "Jason A. Donenfeld" <Jason(a)zx2c4.com> [ Upstream commit a7c01fa93aeb03ab76cd3cb2107990dd160498e6 ] I was recently surprised to learn that msleep_interruptible(), wait_for_completion_interruptible_timeout(), and related functions simply hung when I called kthread_stop() on kthreads using them. The solution to fixing the case with msleep_interruptible() was more simply to move to schedule_timeout_interruptible(). Why? The reason is that msleep_interruptible(), and many functions just like it, has a loop like this: while (timeout && !signal_pending(current)) timeout = schedule_timeout_interruptible(timeout); The call to kthread_stop() woke up the thread, so schedule_timeout_ interruptible() returned early, but because signal_pending() returned true, it went back into another timeout, which was never woken up. This wait loop pattern is common to various pieces of code, and I suspect that the subtle misuse in a kthread that caused a deadlock in the code I looked at last week is also found elsewhere. So this commit causes signal_pending() to return true when kthread_stop() is called, by setting TIF_NOTIFY_SIGNAL. The same also probably applies to the similar kthread_park() functionality, but that can be addressed later, as its semantics are slightly different. Cc: Eric W. Biederman <ebiederm(a)xmission.com> Signed-off-by: Jason A. Donenfeld <Jason(a)zx2c4.com> v1: https://lkml.kernel.org/r/20220627120020.608117-1-Jason@zx2c4.com v2: https://lkml.kernel.org/r/20220627145716.641185-1-Jason@zx2c4.com v3: https://lkml.kernel.org/r/20220628161441.892925-1-Jason@zx2c4.com v4: https://lkml.kernel.org/r/20220711202136.64458-1-Jason@zx2c4.com v5: https://lkml.kernel.org/r/20220711232123.136330-1-Jason@zx2c4.com Signed-off-by: Eric W. Biederman <ebiederm(a)xmission.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- kernel/kthread.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/kthread.c b/kernel/kthread.c index 3c677918d8f2..7243a010f433 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -704,6 +704,7 @@ int kthread_stop(struct task_struct *k) kthread = to_kthread(k); set_bit(KTHREAD_SHOULD_STOP, &kthread->flags); kthread_unpark(k); + set_tsk_thread_flag(k, TIF_NOTIFY_SIGNAL); wake_up_process(k); wait_for_completion(&kthread->exited); ret = kthread->result; -- 2.35.1

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[PATCH AUTOSEL 6.0 01/11] signal: break out of wait loops on kthread_stop()

by Sasha Levin

From: "Jason A. Donenfeld" <Jason(a)zx2c4.com> [ Upstream commit a7c01fa93aeb03ab76cd3cb2107990dd160498e6 ] I was recently surprised to learn that msleep_interruptible(), wait_for_completion_interruptible_timeout(), and related functions simply hung when I called kthread_stop() on kthreads using them. The solution to fixing the case with msleep_interruptible() was more simply to move to schedule_timeout_interruptible(). Why? The reason is that msleep_interruptible(), and many functions just like it, has a loop like this: while (timeout && !signal_pending(current)) timeout = schedule_timeout_interruptible(timeout); The call to kthread_stop() woke up the thread, so schedule_timeout_ interruptible() returned early, but because signal_pending() returned true, it went back into another timeout, which was never woken up. This wait loop pattern is common to various pieces of code, and I suspect that the subtle misuse in a kthread that caused a deadlock in the code I looked at last week is also found elsewhere. So this commit causes signal_pending() to return true when kthread_stop() is called, by setting TIF_NOTIFY_SIGNAL. The same also probably applies to the similar kthread_park() functionality, but that can be addressed later, as its semantics are slightly different. Cc: Eric W. Biederman <ebiederm(a)xmission.com> Signed-off-by: Jason A. Donenfeld <Jason(a)zx2c4.com> v1: https://lkml.kernel.org/r/20220627120020.608117-1-Jason@zx2c4.com v2: https://lkml.kernel.org/r/20220627145716.641185-1-Jason@zx2c4.com v3: https://lkml.kernel.org/r/20220628161441.892925-1-Jason@zx2c4.com v4: https://lkml.kernel.org/r/20220711202136.64458-1-Jason@zx2c4.com v5: https://lkml.kernel.org/r/20220711232123.136330-1-Jason@zx2c4.com Signed-off-by: Eric W. Biederman <ebiederm(a)xmission.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- kernel/kthread.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/kthread.c b/kernel/kthread.c index 3c677918d8f2..7243a010f433 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -704,6 +704,7 @@ int kthread_stop(struct task_struct *k) kthread = to_kthread(k); set_bit(KTHREAD_SHOULD_STOP, &kthread->flags); kthread_unpark(k); + set_tsk_thread_flag(k, TIF_NOTIFY_SIGNAL); wake_up_process(k); wait_for_completion(&kthread->exited); ret = kthread->result; -- 2.35.1

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