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================================================================== BUG: KCSAN: data-race in _do_fork / do_exit write to 0xffff8880981d5024 of 4 bytes by task 17359 on cpu 1: freezer_count include/linux/freezer.h:121 [inline] wait_for_vfork_done kernel/fork.c:1258 [inline] _do_fork+0x2dd/0x6c0 kernel/fork.c:2459 __do_sys_clone kernel/fork.c:2545 [inline] __se_sys_clone kernel/fork.c:2529 [inline] __x64_sys_clone+0xc8/0xf0 kernel/fork.c:2529 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8880981d5024 of 4 bytes by task 17406 on cpu 0: find_alive_thread kernel/exit.c:493 [inline] find_new_reaper kernel/exit.c:542 [inline] forget_original_parent kernel/exit.c:617 [inline] exit_notify kernel/exit.c:650 [inline] do_exit+0x7e0/0x16c0 kernel/exit.c:826 do_group_exit+0xcb/0x180 kernel/exit.c:903 get_signal+0xe9f/0x1650 kernel/signal.c:2757 arch_do_signal+0x25/0x270 arch/x86/kernel/signal.c:811 exit_to_user_mode_loop kernel/entry/common.c:135 [inline] exit_to_user_mode_prepare+0x124/0x210 kernel/entry/common.c:166 syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:241 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 17406 Comm: syz-executor.1 Not tainted 5.9.0-rc1-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/08/19 03:16 | upstream | 18445bf405cb | e1c29030 | .config | console log | report | ci2-upstream-kcsan-gce |