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================================================================== BUG: KCSAN: data-race in exit_signals / get_task_exe_file write to 0xffff888135cff06c of 4 bytes by task 22033 on cpu 1: exit_signals+0xe1/0x4a0 kernel/signal.c:2927 do_exit+0x194/0x1560 kernel/exit.c:782 do_group_exit+0x19b/0x1a0 kernel/exit.c:923 __do_sys_exit_group+0xb/0x10 kernel/exit.c:934 __se_sys_exit_group+0x5/0x10 kernel/exit.c:932 __x64_sys_exit_group+0x16/0x20 kernel/exit.c:932 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888135cff06c of 4 bytes by task 22036 on cpu 0: get_task_exe_file+0x44/0x140 kernel/fork.c:1202 proc_exe_link+0x44/0x100 fs/proc/base.c:1725 proc_pid_get_link+0x50/0xb0 fs/proc/base.c:1750 pick_link fs/namei.c:1736 [inline] step_into+0x974/0xec0 fs/namei.c:1798 walk_component+0x190/0x350 fs/namei.c:1948 lookup_last fs/namei.c:2397 [inline] path_lookupat+0x12d/0x570 fs/namei.c:2421 filename_lookup+0xff/0x390 fs/namei.c:2454 kern_path+0x2e/0x40 fs/namei.c:2541 create_local_trace_uprobe+0x3f/0x3c0 kernel/trace/trace_uprobe.c:1592 perf_uprobe_init+0xbe/0x140 kernel/trace/trace_event_perf.c:323 perf_uprobe_event_init+0xde/0x140 kernel/events/core.c:9868 perf_try_init_event+0x21a/0x400 kernel/events/core.c:11185 perf_init_event kernel/events/core.c:11249 [inline] perf_event_alloc+0xa60/0x1790 kernel/events/core.c:11540 __do_sys_perf_event_open kernel/events/core.c:12029 [inline] __se_sys_perf_event_open+0x5c7/0x2740 kernel/events/core.c:11921 __x64_sys_perf_event_open+0x63/0x70 kernel/events/core.c:11921 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00404040 -> 0x00404044 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 22036 Comm: syz-executor.5 Tainted: G W 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/05/31 17:00 | upstream | 8124c8a6b353 | 032639db | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in exit_signals / get_task_exe_file | |||
2021/05/26 13:43 | upstream | ad9f25d33860 | 750ce164 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in exit_signals / get_task_exe_file | |||
2021/05/12 09:36 | upstream | 88b06399c9c7 | 86294427 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in exit_signals / get_task_exe_file | |||
2021/04/30 09:41 | upstream | 8ca5297e7e38 | 77e2b668 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in exit_signals / get_task_exe_file | |||
2021/04/24 02:55 | upstream | 8db5efb83fa9 | 17f0b706 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in exit_signals / get_task_exe_file |