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================================================================== BUG: KCSAN: data-race in do_notify_parent_cldstop / wait_consider_task write to 0xffff88810750d370 of 4 bytes by task 27505 on cpu 1: wait_task_stopped kernel/exit.c:1189 [inline] wait_consider_task+0xabe/0x1700 kernel/exit.c:1375 ptrace_do_wait kernel/exit.c:1415 [inline] do_wait+0x1f4/0x670 kernel/exit.c:1522 kernel_wait4+0x14b/0x1b0 kernel/exit.c:1681 __do_sys_wait4 kernel/exit.c:1709 [inline] __se_sys_wait4 kernel/exit.c:1705 [inline] __x64_sys_wait4+0x90/0x120 kernel/exit.c:1705 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff88810750d370 of 4 bytes by task 27509 on cpu 0: do_notify_parent_cldstop+0x1a0/0x290 kernel/signal.c:2175 ptrace_stop+0x2e6/0x610 kernel/signal.c:2293 ptrace_signal+0x52/0x250 kernel/signal.c:2570 get_signal+0x848/0x1020 kernel/signal.c:2745 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:869 exit_to_user_mode_loop+0x78/0x130 kernel/entry/common.c:166 exit_to_user_mode_prepare+0x69/0x90 kernel/entry/common.c:201 irqentry_exit_to_user_mode+0x5/0x10 kernel/entry/common.c:307 irqentry_exit+0xe/0x40 kernel/entry/common.c:408 asm_exc_page_fault+0x22/0x30 value changed: 0x00000013 -> 0x00000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 27509 Comm: syz-executor.3 Not tainted 5.19.0-syzkaller-13215-geb555cb5b794-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2022/08/09 09:26 | upstream | eb555cb5b794 | da700653 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in do_notify_parent_cldstop / wait_consider_task |