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================================================================== BUG: KCSAN: data-race in __perf_event_overflow / fasync_remove_entry write to 0xffff88813a306060 of 8 bytes by task 5826 on cpu 1: fasync_remove_entry+0xd5/0x130 fs/fcntl.c:879 fasync_helper+0x96/0xc0 fs/fcntl.c:978 perf_fasync+0x64/0x80 kernel/events/core.c:6635 __fput+0x5c6/0x630 fs/file_table.c:391 __fput_sync+0x44/0x50 fs/file_table.c:475 __do_sys_close fs/open.c:1590 [inline] __se_sys_close+0xfa/0x1a0 fs/open.c:1575 __x64_sys_close+0x1f/0x30 fs/open.c:1575 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff88813a306060 of 8 bytes by interrupt on cpu 0: __perf_event_overflow+0x35a/0x3e0 kernel/events/core.c:9589 perf_swevent_hrtimer+0x23d/0x2e0 kernel/events/core.c:11033 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x217/0x700 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x20d/0x7b0 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline] __sysvec_apic_timer_interrupt+0x52/0x190 arch/x86/kernel/apic/apic.c:1082 sysvec_apic_timer_interrupt+0x68/0x80 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:95 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0x3d/0x50 kernel/locking/spinlock.c:194 class_raw_spinlock_irqsave_destructor include/linux/spinlock.h:518 [inline] try_to_wake_up+0x3d9/0x620 kernel/sched/core.c:4226 wake_up_process kernel/sched/core.c:4474 [inline] wake_up_q+0x3f/0x70 kernel/sched/core.c:1028 futex_wake+0x2cd/0x320 kernel/futex/waitwake.c:198 do_futex+0x2ab/0x360 kernel/futex/syscalls.c:107 __do_sys_futex kernel/futex/syscalls.c:179 [inline] __se_sys_futex+0x25d/0x3a0 kernel/futex/syscalls.c:160 __x64_sys_futex+0x78/0x90 kernel/futex/syscalls.c:160 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b value changed: 0xffff888147342120 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 5831 Comm: syz-executor.5 Not tainted 6.7.0-rc4-syzkaller-00009-gbee0e7762ad2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/12/05 23:41 | upstream | bee0e7762ad2 | 858d62d1 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __perf_event_overflow / fasync_remove_entry |