syzbot

 sign-in | mailing list | source | docs
🐞 Open [1007] ≡ Subsystems 🐞 Fixed [5248] 🐞 Invalid [12551] ⬇ Missing Backports [83] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes 💬 Send us feedback

WARNING in rcu_irq_enter

Status: auto-closed as invalid on 2022/09/24 13:12
Subsystems: trace
[Documentation on labels]
First crash: 1381d, last: 1314d
Cause bisection: introduced by (bisect log) :
commit a21ee6055c30ce68c4e201c6496f0ed2a1936230
Author: Peter Zijlstra <peterz@infradead.org>
Date: Mon May 25 10:22:41 2020 +0000

  lockdep: Change hardirq{s_enabled,_context} to per-cpu variables

Crash: no output from test machine (log)
Repro: C syz .config
  
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Last patch testing requests (9)
Created Duration User Patch Repo Result
2022/09/24 11:30 16m retest repro linux-next OK log
2022/09/24 09:30 16m retest repro linux-next OK log
2022/09/24 06:30 16m retest repro linux-next OK log
2022/09/24 04:30 16m retest repro linux-next OK log
2022/09/24 02:30 19m retest repro linux-next OK log
2022/09/24 00:30 16m retest repro linux-next OK log
2022/09/20 23:29 16m retest repro upstream OK log
2022/09/01 20:27 14m retest repro bpf-next OK log
2022/09/01 15:27 13m retest repro bpf OK log

Sample crash report:
blk_update_request: I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x1000 phys_seg 1 prio class 0
XFS (loop0): SB validate failed with error -5.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6836 at kernel/rcu/tree.c:1045 rcu_irq_enter+0x15/0x20 kernel/rcu/tree.c:1045
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 6836 Comm: syz-executor106 Not tainted 5.8.0-rc6-next-20200720-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x18f/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:231
 __warn.cold+0x20/0x45 kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:545
RIP: 0010:rcu_irq_enter+0x15/0x20 kernel/rcu/tree.c:1045
Code: 00 00 00 4c 89 e7 e8 6a 39 c8 f9 eb b4 0f 0b eb 8b 0f 1f 40 00 8b 05 86 7d cd 02 85 c0 74 0d 65 8b 05 bb 66 16 78 85 c0 74 02 <0f> 0b e9 44 ff ff ff cc cc cc cc 0f 1f 44 00 00 48 8b 05 c4 8f da
RSP: 0018:ffffc90001617ae8 EFLAGS: 00010002
RAX: 0000000000000001 RBX: 0000000000000086 RCX: ffffffff817a03c7
RDX: ffff8880958c61c0 RSI: ffffffff81620cd1 RDI: 0000000000000005
RBP: ffffffff8cc535a8 R08: 0000000000000000 R09: ffffffff8ab8f10f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000086
R13: ffffffff87ee2656 R14: 0000000000000000 R15: ffffffff89c52a40
 rcu_irq_enter_irqson+0x76/0x140 kernel/rcu/tree.c:1060
 trace_irq_disable_rcuidle include/trace/events/preemptirq.h:36 [inline]
 trace_irq_disable_rcuidle include/trace/events/preemptirq.h:36 [inline]
 trace_hardirqs_off kernel/trace/trace_preemptirq.c:82 [inline]
 trace_hardirqs_off+0x114/0x210 kernel/trace/trace_preemptirq.c:74
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
 _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:159
 debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:636
 debug_rcu_head_queue kernel/rcu/rcu.h:176 [inline]
 __call_rcu kernel/rcu/tree.c:2869 [inline]
 call_rcu+0x2c/0x7e0 kernel/rcu/tree.c:2957
 lockdep_unregister_key+0x21d/0x570 kernel/locking/lockdep.c:5678
 wq_unregister_lockdep kernel/workqueue.c:3461 [inline]
 destroy_workqueue+0x449/0x740 kernel/workqueue.c:4415
 xfs_destroy_mount_workqueues+0x37/0x150 fs/xfs/xfs_super.c:546
 xfs_fc_fill_super+0x4c0/0x12e0 fs/xfs/xfs_super.c:1578
 get_tree_bdev+0x421/0x740 fs/super.c:1353
 vfs_get_tree+0x89/0x2f0 fs/super.c:1558
 do_new_mount fs/namespace.c:2912 [inline]
 do_mount+0x14f6/0x1e20 fs/namespace.c:3249
 __do_sys_mount fs/namespace.c:3459 [inline]
 __se_sys_mount fs/namespace.c:3436 [inline]
 __x64_sys_mount+0x18f/0x230 fs/namespace.c:3436
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x440359
Code: Bad RIP value.
RSP: 002b:00007ffcb4d1e758 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000440359
RDX: 0000000020000400 RSI: 00000000200001c0 RDI: 0000000020000240
RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001400084 R11: 0000000000000246 R12: 0000000000401b60
R13: 0000000000401bf0 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (2346):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/07/21 06:56 linux-next ab8be66e724e d88894e6 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/07/21 06:02 linux-next ab8be66e724e d88894e6 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/08/06 02:22 upstream fffe3ae0ee84 0487ea6f .config console log report syz ci-upstream-kasan-gce-selinux-root
2020/08/17 01:57 bpf 4fccd2ff74fb 424dd8e7 .config console log report syz ci-upstream-bpf-kasan-gce
2020/08/10 09:05 bpf-next bfdd5aaa54b0 70301872 .config console log report syz ci-upstream-bpf-next-kasan-gce
2020/08/07 12:12 linux-next 01830e6c042e cb436c69 .config console log report syz ci-upstream-linux-next-kasan-gce-root
2020/08/07 09:01 linux-next 01830e6c042e cb436c69 .config console log report syz ci-upstream-linux-next-kasan-gce-root
2020/07/21 00:08 linux-next ab8be66e724e 4285ffa3 .config console log report syz ci-upstream-linux-next-kasan-gce-root
2020/07/20 15:51 linux-next ab8be66e724e 4285ffa3 .config console log report syz ci-upstream-linux-next-kasan-gce-root
2020/09/09 18:10 upstream fffe3ae0ee84 ac7ca78e .config console log report ci-qemu-upstream
2020/08/30 20:31 upstream 1127b219ce94 d5a3ae1f .config console log report ci-upstream-kasan-gce-root
2020/08/30 02:28 upstream 4d41ead6ead9 d5a3ae1f .config console log report ci-upstream-kasan-gce-selinux-root
2020/08/29 10:23 upstream 96d454cd2c16 d5a3ae1f .config console log report ci-upstream-kasan-gce-smack-root
2020/08/22 21:09 upstream 00e4db51259a 1da71ab0 .config console log report ci-qemu-upstream-386
2020/09/16 18:57 bpf ce880cb825fc 18d7d030 .config console log report info ci-upstream-bpf-kasan-gce
2020/09/25 00:48 bpf-next 0789e13bc3f8 54289b08 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/24 23:07 bpf-next 0789e13bc3f8 54289b08 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/24 22:18 bpf-next 0789e13bc3f8 54289b08 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/24 20:03 bpf-next 0789e13bc3f8 54289b08 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/24 18:25 bpf-next 0789e13bc3f8 54289b08 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/24 16:58 bpf-next 0789e13bc3f8 54289b08 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/24 15:54 bpf-next 0789e13bc3f8 54289b08 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/24 12:57 bpf-next 0789e13bc3f8 54289b08 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/24 08:08 bpf-next 0789e13bc3f8 54289b08 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/24 04:11 bpf-next 0789e13bc3f8 54289b08 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/24 01:36 bpf-next a8a717963fe5 287cd75a .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 23:31 bpf-next a8a717963fe5 287cd75a .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 23:24 bpf-next a8a717963fe5 287cd75a .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 22:24 bpf-next a8a717963fe5 287cd75a .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 21:06 bpf-next a8a717963fe5 287cd75a .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 20:00 bpf-next a8a717963fe5 287cd75a .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 18:39 bpf-next a8a717963fe5 287cd75a .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 17:00 bpf-next a8a717963fe5 287cd75a .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 14:47 bpf-next a8a717963fe5 287cd75a .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 10:59 bpf-next a8a717963fe5 3e8f6c27 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 09:33 bpf-next a8a717963fe5 3e8f6c27 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 08:57 bpf-next a8a717963fe5 3e8f6c27 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 07:29 bpf-next a8a717963fe5 3e8f6c27 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 06:01 bpf-next a8a717963fe5 3e8f6c27 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 04:37 bpf-next a8a717963fe5 3e8f6c27 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 03:04 bpf-next a8a717963fe5 3e8f6c27 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/23 01:11 bpf-next a8a717963fe5 3e8f6c27 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/22 23:07 bpf-next a8a717963fe5 3e8f6c27 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/22 21:37 bpf-next a8a717963fe5 3e8f6c27 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/22 19:10 bpf-next a8a717963fe5 3e8f6c27 .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/22 14:02 bpf-next 31f23a6a181c 9e1fa68e .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/22 11:55 bpf-next 31f23a6a181c 9e1fa68e .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/22 10:49 bpf-next 31f23a6a181c 9e1fa68e .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/22 08:51 bpf-next 31f23a6a181c 9e1fa68e .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/22 07:18 bpf-next 31f23a6a181c 9e1fa68e .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/22 05:27 bpf-next 31f23a6a181c 9e1fa68e .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/22 01:37 bpf-next 31f23a6a181c 9e1fa68e .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/22 00:33 bpf-next 31f23a6a181c 9e1fa68e .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/21 18:35 bpf-next 70b971118e07 9e1fa68e .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/21 18:10 bpf-next 70b971118e07 9e1fa68e .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/21 16:41 bpf-next 70b971118e07 9e1fa68e .config console log report info ci-upstream-bpf-next-kasan-gce
2020/09/21 15:19 bpf-next 70b971118e07 9e1fa68e .config console log report info ci-upstream-bpf-next-kasan-gce
2020/08/31 23:34 linux-next b36c969764ab d5a3ae1f .config console log report ci-upstream-linux-next-kasan-gce-root
2020/07/20 14:12 linux-next ab8be66e724e 4285ffa3 .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.