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================================================================== BUG: KCSAN: data-race in do_signal_stop / mm_update_next_owner write to 0xffff888122aaf024 of 4 bytes by task 12911 on cpu 1: freezer_do_not_count include/linux/freezer.h:109 [inline] freezable_schedule include/linux/freezer.h:171 [inline] do_signal_stop+0x1cf/0x4e0 kernel/signal.c:2395 get_signal+0x601/0x1290 kernel/signal.c:2699 do_signal+0x2b/0x840 arch/x86/kernel/signal.c:784 exit_to_usermode_loop+0x24a/0x2c0 arch/x86/entry/common.c:161 prepare_exit_to_usermode+0x194/0x1e0 arch/x86/entry/common.c:196 swapgs_restore_regs_and_return_to_usermode+0x0/0x40 read to 0xffff888122aaf024 of 4 bytes by task 12921 on cpu 0: mm_update_next_owner+0x376/0x5a0 kernel/exit.c:383 exit_mm kernel/exit.c:478 [inline] do_exit+0x63c/0x1150 kernel/exit.c:782 do_group_exit+0xae/0x1a0 kernel/exit.c:893 get_signal+0x2a7/0x1290 kernel/signal.c:2739 do_signal+0x2b/0x840 arch/x86/kernel/signal.c:784 exit_to_usermode_loop+0x24a/0x2c0 arch/x86/entry/common.c:161 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x38b/0x3b0 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 12921 Comm: syz-executor.3 Not tainted 5.7.0-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/04/30 19:52 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 3698959a | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/03/08 05:05 | https://github.com/google/ktsan.git kcsan | 941e0d917bbf | 2e9971bb | .config | console log | report | ci2-upstream-kcsan-gce |