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================================================================== BUG: KCSAN: data-race in do_exit / find_alive_thread read to 0xffff8880ad307064 of 4 bytes by task 14337 on cpu 1: find_alive_thread+0xdd/0x130 kernel/exit.c:495 find_new_reaper kernel/exit.c:548 [inline] forget_original_parent kernel/exit.c:623 [inline] exit_notify kernel/exit.c:656 [inline] do_exit+0x67c/0x18f0 kernel/exit.c:838 do_group_exit+0xb4/0x1c0 kernel/exit.c:921 get_signal+0x2a2/0x1320 kernel/signal.c:2734 do_signal+0x2f/0x6c0 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x250/0x2c0 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x353/0x370 arch/x86/entry/common.c:300 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff8880ad307064 of 4 bytes by task 14327 on cpu 0: freezer_count include/linux/freezer.h:121 [inline] freezable_schedule include/linux/freezer.h:173 [inline] exit_mm kernel/exit.c:471 [inline] do_exit+0x3aa/0x18f0 kernel/exit.c:804 do_group_exit+0xb4/0x1c0 kernel/exit.c:921 get_signal+0x2a2/0x1320 kernel/signal.c:2734 do_signal+0x2f/0x6c0 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x250/0x2c0 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x353/0x370 arch/x86/entry/common.c:300 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 14327 Comm: syz-executor.1 Not tainted 5.4.0-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/11/30 09:31 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 3a75be00 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/16 07:21 | https://github.com/google/ktsan.git kcsan | 5863cc791e4c | cdac920b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/12 08:57 | https://github.com/google/ktsan.git kcsan | 7f2955e0d056 | 048f2d49 | .config | console log | report | ci2-upstream-kcsan-gce |