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| Kernel | Title | Rank 🛈 | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| upstream | KCSAN: data-race in exit_signals / prepare_signal kernel | 6 | 18 | 1961d | 2272d | 0/29 | auto-closed as invalid on 2020/10/01 01:52 | |||
| upstream | KCSAN: data-race in exit_signals / prepare_signal (2) kernel | 6 | 10 | 1842d | 1859d | 0/29 | auto-closed as invalid on 2021/01/28 12:34 | |||
| upstream | KCSAN: data-race in exit_signals / prepare_signal (4) kernel | 6 | 1 | 1720d | 1719d | 0/29 | auto-closed as invalid on 2021/05/30 19:12 |
================================================================== BUG: KCSAN: data-race in exit_signals / prepare_signal write to 0xffff88802d72502c of 4 bytes by task 25915 on cpu 1: exit_signals+0x10d/0x540 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:2865 do_exit+0x1b4/0x1690 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/exit.c:781 do_group_exit+0xce/0x180 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/exit.c:922 get_signal+0xdce/0x14e0 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:2773 arch_do_signal_or_restart+0x2a/0x270 syzkaller/managers/upstream-kcsan-gce/kernel/arch/x86/kernel/signal.c:811 handle_signal_work syzkaller/managers/upstream-kcsan-gce/kernel/kernel/entry/common.c:147 [inline] exit_to_user_mode_loop syzkaller/managers/upstream-kcsan-gce/kernel/kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x11a/0x1b0 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/entry/common.c:201 irqentry_exit_to_user_mode+0x5/0x20 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/entry/common.c:315 irqentry_exit+0xe/0x40 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/entry/common.c:403 asm_sysvec_reschedule_ipi+0x12/0x20 syzkaller/managers/upstream-kcsan-gce/kernel/./arch/x86/include/asm/idtentry.h:634 read to 0xffff88802d72502c of 4 bytes by task 13030 on cpu 0: sig_task_ignored syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:94 [inline] sig_ignored syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:119 [inline] prepare_signal+0x872/0xd80 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:962 __send_signal+0x64/0x790 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:1082 send_signal+0x398/0x3e0 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:1242 do_send_sig_info+0x9b/0xe0 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:1291 group_send_sig_info syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:1414 [inline] kill_pid_info+0x7f/0x100 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:1448 kill_proc_info syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:1465 [inline] kill_something_info syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:1562 [inline] __do_sys_kill syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:3683 [inline] __se_sys_kill+0xd3/0x450 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:3677 __x64_sys_kill+0x2d/0x40 syzkaller/managers/upstream-kcsan-gce/kernel/kernel/signal.c:3677 do_syscall_64+0x39/0x80 syzkaller/managers/upstream-kcsan-gce/kernel/arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 13030 Comm: syz-executor.3 Not tainted 5.11.0-rc6-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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021/02/06 19:55 | upstream | 1e0d27fce010 | 0655e081 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in exit_signals / prepare_signal |