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================================================================== BUG: KCSAN: data-race in kcompactd / kthread_is_per_cpu write to 0xffff888100c1502c of 4 bytes by task 474 on cpu 0: freezer_do_not_count include/linux/freezer.h:109 [inline] freezable_schedule_timeout include/linux/freezer.h:191 [inline] kcompactd+0x33e/0xc10 mm/compaction.c:2906 kthread+0x1d0/0x1f0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 read to 0xffff888100c1502c of 4 bytes by interrupt on cpu 1: __to_kthread kernel/kthread.c:101 [inline] kthread_is_per_cpu+0x2d/0x80 kernel/kthread.c:540 can_migrate_task+0xf/0x180 kernel/sched/fair.c:7615 detach_tasks+0xab/0x380 kernel/sched/fair.c:7779 load_balance+0x768/0xcc0 kernel/sched/fair.c:9679 rebalance_domains+0x1ae/0x2d0 kernel/sched/fair.c:10058 __do_softirq+0x12c/0x275 kernel/softirq.c:559 invoke_softirq kernel/softirq.c:433 [inline] __irq_exit_rcu+0xa5/0xb0 kernel/softirq.c:637 sysvec_apic_timer_interrupt+0x69/0x80 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647 native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] acpi_safe_halt drivers/acpi/processor_idle.c:108 [inline] acpi_idle_do_entry drivers/acpi/processor_idle.c:513 [inline] acpi_idle_enter+0x25b/0x2e0 drivers/acpi/processor_idle.c:648 cpuidle_enter_state+0x2b6/0x750 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:158 [inline] cpuidle_idle_call kernel/sched/idle.c:239 [inline] do_idle+0x1a3/0x240 kernel/sched/idle.c:306 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:403 secondary_startup_64_no_verify+0xb0/0xbb value changed: 0x00200040 -> 0x40200040 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.13.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/06/02 05:15 | upstream | 231bc5390667 | 032639db | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/05/29 21:49 | upstream | f956cb99b938 | 325a8dab | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/05/28 15:09 | upstream | 97e5bf604b7a | 858ea628 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/05/27 16:00 | upstream | d7c5303fbc8a | 858ea628 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/05/26 06:22 | upstream | ad9f25d33860 | 93d3a9f6 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/05/24 21:31 | upstream | c4681547bcce | 3c7fef33 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/05/22 18:36 | upstream | 23d729263037 | 3c7fef33 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/05/20 20:29 | upstream | f01da525b3de | c560a65d | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/05/19 23:34 | upstream | c3d0e3fd41b7 | a343ba6b | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/05/17 07:58 | upstream | d07f6ca923ea | f54a5c09 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/05/16 09:05 | upstream | c12a29ed9094 | f54a5c09 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/05/15 09:51 | upstream | 25a1298726e9 | 93f844de | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/05/11 05:55 | upstream | 1140ab592e2e | ca873091 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/05/09 04:36 | upstream | b741596468b0 | bc5434be | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/04/30 22:42 | upstream | 65c61de9d090 | 77e2b668 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu | |||
2021/04/30 15:05 | upstream | 8ca5297e7e38 | 77e2b668 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in kcompactd / kthread_is_per_cpu |