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🐞 Open [708] 🐞 Fixed [181] 🐞 Invalid [624] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
linux-4.19 | possible deadlock in lock_trace | syz | error | 42 | 875d | 1381d | 0/1 | upstream: reported syz repro on 2019/04/28 18:16 | |
android-49 | possible deadlock in lock_trace | C | 7424 | 1162d | 1398d | 0/3 | public: reported C repro on 2019/04/12 00:00 | ||
upstream | possible deadlock in lock_trace (2) | 3 | 1362d | 1392d | 0/24 | auto-closed as invalid on 2019/10/25 08:41 | |||
upstream | possible deadlock in lock_trace | C | 1847 | 1414d | 1895d | 0/24 | closed as dup on 2017/12/12 21:59 | ||
upstream | possible deadlock in lock_trace (3) | syz | inconclusive | done | 69 | 1042d | 1176d | 17/24 | fixed on 2020/08/18 22:40 |
android-414 | possible deadlock in lock_trace | syz | 203 | 1407d | 1398d | 0/1 | public: reported syz repro on 2019/04/12 00:01 | ||
android-44 | possible deadlock in lock_trace | C | 41 | 1168d | 1398d | 0/2 | public: reported C repro on 2019/04/11 08:44 |
Created | Duration | User | Patch | Repo | Result |
---|---|---|---|---|---|
2023/01/28 01:32 | 9m | retest repro | linux-4.14.y | report log | |
2023/01/28 00:32 | 11m | retest repro | linux-4.14.y | report log | |
2022/09/09 10:27 | 11m | retest repro | linux-4.14.y | report log | |
2022/09/09 09:27 | 8m | retest repro | linux-4.14.y | report log |
====================================================== WARNING: possible circular locking dependency detected 4.14.175-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor993/6341 is trying to acquire lock: (&sig->cred_guard_mutex){+.+.}, at: [<ffffffff81a45d4f>] lock_trace+0x3f/0xc0 fs/proc/base.c:407 but task is already holding lock: (&p->lock){+.+.}, at: [<ffffffff8192f06a>] seq_read+0xba/0x1160 fs/seq_file.c:165 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&p->lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xe8/0x1470 kernel/locking/mutex.c:893 seq_read+0xba/0x1160 fs/seq_file.c:165 do_loop_readv_writev fs/read_write.c:695 [inline] do_loop_readv_writev fs/read_write.c:682 [inline] do_iter_read+0x3e3/0x5a0 fs/read_write.c:919 vfs_readv+0xd3/0x130 fs/read_write.c:981 kernel_readv fs/splice.c:361 [inline] default_file_splice_read+0x41d/0x870 fs/splice.c:416 do_splice_to+0xfb/0x150 fs/splice.c:880 splice_direct_to_actor+0x20a/0x730 fs/splice.c:952 do_splice_direct+0x164/0x210 fs/splice.c:1061 do_sendfile+0x469/0xaf0 fs/read_write.c:1441 SYSC_sendfile64 fs/read_write.c:1502 [inline] SyS_sendfile64+0xff/0x110 fs/read_write.c:1488 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 -> #2 (sb_writers#3){.+.+}: percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] __sb_start_write+0x1a1/0x2e0 fs/super.c:1363 sb_start_write include/linux/fs.h:1549 [inline] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 ovl_create_object+0x75/0x1d0 fs/overlayfs/dir.c:538 lookup_open+0x10e8/0x1750 fs/namei.c:3241 do_last fs/namei.c:3334 [inline] path_openat+0xfc1/0x3c50 fs/namei.c:3569 do_filp_open+0x18e/0x250 fs/namei.c:3603 do_sys_open+0x29d/0x3f0 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 -> #1 (&ovl_i_mutex_dir_key[depth]){++++}: down_read+0x37/0xa0 kernel/locking/rwsem.c:24 inode_lock_shared include/linux/fs.h:729 [inline] do_last fs/namei.c:3333 [inline] path_openat+0x185a/0x3c50 fs/namei.c:3569 do_filp_open+0x18e/0x250 fs/namei.c:3603 do_open_execat+0xda/0x430 fs/exec.c:849 do_execveat_common.isra.0+0x694/0x1c70 fs/exec.c:1740 do_execve fs/exec.c:1847 [inline] SYSC_execve fs/exec.c:1928 [inline] SyS_execve+0x34/0x40 fs/exec.c:1923 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 -> #0 (&sig->cred_guard_mutex){+.+.}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3994 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xe8/0x1470 kernel/locking/mutex.c:893 lock_trace+0x3f/0xc0 fs/proc/base.c:407 proc_pid_syscall+0x81/0x1f0 fs/proc/base.c:639 proc_single_show+0xe7/0x150 fs/proc/base.c:761 seq_read+0x4d2/0x1160 fs/seq_file.c:237 do_loop_readv_writev fs/read_write.c:695 [inline] do_loop_readv_writev fs/read_write.c:682 [inline] do_iter_read+0x3e3/0x5a0 fs/read_write.c:919 vfs_readv+0xd3/0x130 fs/read_write.c:981 kernel_readv fs/splice.c:361 [inline] default_file_splice_read+0x41d/0x870 fs/splice.c:416 do_splice_to+0xfb/0x150 fs/splice.c:880 splice_direct_to_actor+0x20a/0x730 fs/splice.c:952 do_splice_direct+0x164/0x210 fs/splice.c:1061 do_sendfile+0x469/0xaf0 fs/read_write.c:1441 SYSC_sendfile64 fs/read_write.c:1502 [inline] SyS_sendfile64+0xff/0x110 fs/read_write.c:1488 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 other info that might help us debug this: Chain exists of: &sig->cred_guard_mutex --> sb_writers#3 --> &p->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&p->lock); lock(sb_writers#3); lock(&p->lock); lock(&sig->cred_guard_mutex); *** DEADLOCK *** 2 locks held by syz-executor993/6341: #0: (sb_writers#3){.+.+}, at: [<ffffffff818b2945>] file_start_write include/linux/fs.h:2708 [inline] #0: (sb_writers#3){.+.+}, at: [<ffffffff818b2945>] do_sendfile+0x865/0xaf0 fs/read_write.c:1440 #1: (&p->lock){+.+.}, at: [<ffffffff8192f06a>] seq_read+0xba/0x1160 fs/seq_file.c:165 stack backtrace: CPU: 0 PID: 6341 Comm: syz-executor993 Not tainted 4.14.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 print_circular_bug.isra.0.cold+0x1c4/0x282 kernel/locking/lockdep.c:1258 check_prev_add kernel/locking/lockdep.c:1901 [inline] check_prevs_add kernel/locking/lockdep.c:2018 [inline] validate_chain kernel/locking/lockdep.c:2460 [inline] __lock_acquire+0x2cb3/0x4620 kernel/locking/lockdep.c:3487 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3994 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xe8/0x1470 kernel/locking/mutex.c:893 lock_trace+0x3f/0xc0 fs/proc/base.c:407 proc_pid_syscall+0x81/0x1f0 fs/proc/base.c:639 proc_single_show+0xe7/0x150 fs/proc/base.c:761 seq_read+0x4d2/0x1160 fs/seq_file.c:237 do_loop_readv_writev fs/read_write.c:695 [inline] do_loop_readv_writev fs/read_write.c:682 [inline] do_iter_read+0x3e3/0x5a0 fs/read_write.c:919 vfs_readv+0xd3/0x130 fs/read_write.c:981 kernel_readv fs/splice.c:361 [inline] default_file_splice_read+0x41d/0x870 fs/splice.c:416 do_splice_to+0xfb/0x150 fs/splice.c:880 splice_direct_to_actor+0x20a/0x730 fs/splice.c:952 do_splice_direct+0x164/0x210 fs/splice.c:1061 do_sendfile+0x469/0xaf0 fs/read_write.c:1441 SYSC_sendfile64 fs/read_write.c:1502 [inline] SyS_sendfile64+0xff/0x110 fs/read_write.c:1488 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x440389 RSP: 002b:00007fffe
Manager | Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
ci2-linux-4-14 | 2020/04/04 09:35 | linux-4.14.y | 4520f06b03ae | ef26b610 | .config | console log | report | syz | C | |||
ci2-linux-4-14 | 2020/01/22 13:25 | linux-4.14.y | c1141b3aab36 | 8eda0b95 | .config | console log | report | syz | C | |||
ci2-linux-4-14 | 2020/07/19 21:29 | linux-4.14.y | b850307b279c | 9c812472 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/07/14 09:14 | linux-4.14.y | b850307b279c | ce4c95b3 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/06/25 01:57 | linux-4.14.y | b850307b279c | 9d60b18e | .config | console log | report | |||||
ci2-linux-4-14 | 2020/06/14 09:07 | linux-4.14.y | b850307b279c | a61674a5 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/06/09 11:51 | linux-4.14.y | c6db52a88798 | 0d60b78a | .config | console log | report | |||||
ci2-linux-4-14 | 2020/06/07 05:31 | linux-4.14.y | c6db52a88798 | e6b89e4e | .config | console log | report | |||||
ci2-linux-4-14 | 2020/06/01 21:10 | linux-4.14.y | 4f68020fef1c | a0331e89 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/05/26 10:04 | linux-4.14.y | a41ba30d9df2 | 8ca3b7d2 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/05/22 16:44 | linux-4.14.y | a41ba30d9df2 | 4afdfa20 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/05/21 01:00 | linux-4.14.y | a41ba30d9df2 | 4afdfa20 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/05/07 05:06 | linux-4.14.y | d71f695ce745 | 4618eb2d | .config | console log | report | |||||
ci2-linux-4-14 | 2020/05/02 09:50 | linux-4.14.y | 050272a0423e | bc734e7a | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/25 06:04 | linux-4.14.y | 050272a0423e | 03d97a1b | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/24 18:37 | linux-4.14.y | 050272a0423e | 03d97a1b | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/18 13:11 | linux-4.14.y | c10b57a567e4 | 435c6d53 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/17 07:39 | linux-4.14.y | c10b57a567e4 | 18397578 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/16 22:21 | linux-4.14.y | c10b57a567e4 | c743fcb3 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/16 07:27 | linux-4.14.y | c10b57a567e4 | c743fcb3 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/15 17:57 | linux-4.14.y | c10b57a567e4 | 3f3c5574 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/13 12:28 | linux-4.14.y | c10b57a567e4 | 17a986e5 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/12 07:51 | linux-4.14.y | 4520f06b03ae | a8c6a3f8 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/12 03:38 | linux-4.14.y | 4520f06b03ae | a8c6a3f8 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/10 18:10 | linux-4.14.y | 4520f06b03ae | a8c6a3f8 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/08 22:52 | linux-4.14.y | 4520f06b03ae | db9bcd4b | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/03 04:04 | linux-4.14.y | 4520f06b03ae | a34e2c33 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/02 12:54 | linux-4.14.y | 01364dad1d45 | a34e2c33 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/01 23:43 | linux-4.14.y | 01364dad1d45 | a34e2c33 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/01 22:23 | linux-4.14.y | 01364dad1d45 | a34e2c33 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/01 18:10 | linux-4.14.y | 01364dad1d45 | a34e2c33 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/04/01 00:43 | linux-4.14.y | 01364dad1d45 | a34e2c33 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/30 23:13 | linux-4.14.y | 01364dad1d45 | c8d1cc20 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/30 10:52 | linux-4.14.y | 01364dad1d45 | c8d1cc20 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/30 09:52 | linux-4.14.y | 01364dad1d45 | c8d1cc20 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/30 06:01 | linux-4.14.y | 01364dad1d45 | 05736b29 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/30 04:50 | linux-4.14.y | 01364dad1d45 | 05736b29 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/30 02:40 | linux-4.14.y | 01364dad1d45 | 05736b29 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/28 00:48 | linux-4.14.y | 01364dad1d45 | 831e9a81 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/26 00:43 | linux-4.14.y | 01364dad1d45 | e8e6c7d2 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/22 21:10 | linux-4.14.y | 01364dad1d45 | 78267cec | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/22 19:48 | linux-4.14.y | 01364dad1d45 | 78267cec | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/17 14:45 | linux-4.14.y | 12cd844a39ed | 749688d2 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/16 21:31 | linux-4.14.y | 12cd844a39ed | 749688d2 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/13 08:11 | linux-4.14.y | 12cd844a39ed | fd69032d | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/13 03:31 | linux-4.14.y | 12cd844a39ed | d850e9d0 | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/11 11:14 | linux-4.14.y | 78d697fc93f9 | e103bc9e | .config | console log | report | |||||
ci2-linux-4-14 | 2020/03/11 09:53 | linux-4.14.y | 78d697fc93f9 | 35f53e45 | .config | console log | report | |||||
ci2-linux-4-14 | 2019/04/19 08:50 | linux-4.14.y | 58b454ebf81e | b0e8efcb | .config | console log | report |