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================================================================== BUG: KCSAN: data-race in do_notify_parent_cldstop / do_signal_stop write to 0xffff8881031f9260 of 4 bytes by task 17783 on cpu 0: do_signal_stop+0x10c/0x600 kernel/signal.c:2456 get_signal+0x5f5/0x10a0 kernel/signal.c:2845 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:105 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline] syscall_exit_to_user_mode+0x58/0x130 kernel/entry/common.c:212 do_syscall_64+0xda/0x1d0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff8881031f9260 of 4 bytes by task 17780 on cpu 1: do_notify_parent_cldstop+0x192/0x2a0 kernel/signal.c:2186 get_signal+0xa60/0x10a0 kernel/signal.c:2713 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:105 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline] syscall_exit_to_user_mode+0x58/0x130 kernel/entry/common.c:212 do_syscall_64+0xda/0x1d0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x63/0x6b value changed: 0x00000000 -> 0x00000014 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 17780 Comm: syz-executor.4 Not tainted 6.8.0-rc5-syzkaller-00029-g39133352cbed #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/02/22 14:41 | upstream | 39133352cbed | 345111b5 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in do_notify_parent_cldstop / do_signal_stop |