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================================================================== BUG: KCSAN: data-race in kcompactd / mm_update_next_owner write to 0xffff88812aaaa064 of 4 bytes by task 1957 on cpu 0: freezer_do_not_count include/linux/freezer.h:109 [inline] freezable_schedule_timeout include/linux/freezer.h:191 [inline] kcompactd+0x36e/0xe10 mm/compaction.c:2815 kthread+0x20d/0x230 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 read to 0xffff88812aaaa064 of 4 bytes by task 11381 on cpu 1: mm_update_next_owner+0x1d9/0x4a0 kernel/exit.c:387 exit_mm+0x2c0/0x330 kernel/exit.c:482 do_exit+0x40f/0x16c0 kernel/exit.c:793 do_group_exit+0x17a/0x180 kernel/exit.c:903 __do_sys_exit_group+0xb/0x10 kernel/exit.c:914 __se_sys_exit_group+0x5/0x10 kernel/exit.c:912 __x64_sys_exit_group+0x16/0x20 kernel/exit.c:912 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 11381 Comm: syz-executor.4 Not tainted 5.9.0-rc3-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/08/31 21:21 | upstream | f75aef392f86 | d5a3ae1f | .config | console log | report | ci2-upstream-kcsan-gce |