syzbot


WARNING in call_timer_fn

Status: upstream: reported syz repro on 2022/11/16 15:25
Subsystems: bluetooth (incorrect?)
Reported-by: syzbot+6fb78d577e89e69602f9@syzkaller.appspotmail.com
First crash: 125d, last: 21d

Cause bisection: introduced by (bisect log) [merge commit]:
commit 35c71aa04a13c20b7b1f01200cdd8a09842e58c8
Author: Jakub Kicinski <kuba@kernel.org>
Date: Fri Jan 28 02:59:39 2022 +0000

  Merge branch '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue

Crash: WARNING: ODEBUG bug in netdev_run_todo (log)
Repro: syz .config
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in call_timer_fn 2 3d23h 13d 0/3 upstream: reported on 2023/03/08 12:11
Last patch testing requests:
Created Duration User Patch Repo Result
2022/11/17 01:08 14m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git 7eba4505394e report log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5601 at kernel/workqueue.c:1438 __queue_work+0xf70/0x13b0 kernel/workqueue.c:1438
Modules linked in:
CPU: 0 PID: 5601 Comm: syz-executor.0 Not tainted 6.2.0-rc5-syzkaller-00108-g83abd4d4c4be #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:__queue_work+0xf70/0x13b0 kernel/workqueue.c:1438
Code: e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 08 e2 7c 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 b9 d3 2e 00 85 db 75 42 e8 00 d7 2e 00 <0f> 0b e9 7e f7 ff ff e8 f4 d6 2e 00 0f 0b e9 10 f7 ff ff e8 e8 d6
RSP: 0018:ffffc90000007c98 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000100 RCX: 0000000000000100
RDX: ffff88801eb80000 RSI: ffffffff81528af0 RDI: 0000000000000005
RBP: ffffc90000007d60 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000001 R12: ffff8880226e4b30
R13: ffff8880226e4b78 R14: 0000000000000000 R15: ffff8880752d6800
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f737b044 CR3: 000000000c48e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x1da/0x7c0 kernel/time/timer.c:1700
 expire_timers+0xbb/0x5c0 kernel/time/timer.c:1746
 __run_timers kernel/time/timer.c:2022 [inline]
 __run_timers kernel/time/timer.c:1995 [inline]
 run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
 __do_softirq+0x1fb/0xadc kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1107
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x227/0x630 kernel/locking/lockdep.c:5636
Code: 80 9e 7e 83 f8 01 0f 85 3a 03 00 00 9c 58 f6 c4 02 0f 85 25 03 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc9000487f8b0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff9200090ff19 RCX: 0000000000000001
RDX: 1ffff11003d70146 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000001 R09: ffffffff914c2897
R10: fffffbfff2298512 R11: 1ffffffff216c6e6 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880752d6938 R15: 0000000000000000
 __flush_workqueue+0x118/0x13a0 kernel/workqueue.c:2809
 drain_workqueue+0x1a9/0x3c0 kernel/workqueue.c:2974
 hci_dev_close_sync+0x2f3/0x1200 net/bluetooth/hci_sync.c:4835
 hci_dev_do_close+0x31/0x70 net/bluetooth/hci_core.c:554
 hci_unregister_dev+0x1ce/0x580 net/bluetooth/hci_core.c:2702
 vhci_release+0x80/0xf0 drivers/bluetooth/hci_vhci.c:568
 __fput+0x27c/0xa90 fs/file_table.c:320
 task_work_run+0x16f/0x270 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xaa8/0x2950 kernel/exit.c:867
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1012
 __do_sys_exit_group kernel/exit.c:1023 [inline]
 __se_sys_exit_group kernel/exit.c:1021 [inline]
 __ia32_sys_exit_group+0x3e/0x50 kernel/exit.c:1021
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7fd9549
Code: Unable to access opcode bytes at 0xf7fd951f.
RSP: 002b:00000000ffc2aa2c EFLAGS: 00000282 ORIG_RAX: 00000000000000fc
RAX: ffffffffffffffda RBX: 0000000000000043 RCX: 00000000ffc2aa78
RDX: 0000000000000000 RSI: 00000000f735322c RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	80 9e 7e 83 f8 01 0f 	sbbb   $0xf,0x1f8837e(%rsi)
   7:	85 3a                	test   %edi,(%rdx)
   9:	03 00                	add    (%rax),%eax
   b:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  12:	85 25 03 00 00 48    	test   %esp,0x48000003(%rip)        # 0x4800001b
  18:	83 7c 24 08 00       	cmpl   $0x0,0x8(%rsp)
  1d:	74 01                	je     0x20
  1f:	fb                   	sti
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	48 01 c3             	add    %rax,%rbx <-- trapping instruction
  2d:	48 c7 03 00 00 00 00 	movq   $0x0,(%rbx)
  34:	48 c7 43 08 00 00 00 	movq   $0x0,0x8(%rbx)
  3b:	00
  3c:	48                   	rex.W
  3d:	8b                   	.byte 0x8b
  3e:	84                   	.byte 0x84
  3f:	24                   	.byte 0x24

Crashes (42):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-upstream-kasan-gce-386 2023/01/28 09:32 upstream 83abd4d4c4be 9dfcf09c .config console log report syz [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-kasan-gce-386 2023/01/14 01:20 upstream d9fc1511728c 529798b0 .config console log report syz [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-net-kasan-gce 2022/11/16 06:20 net-next 7eba4505394e 3a127a31 .config console log report syz [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-kasan-gce-selinux-root 2023/02/28 01:41 upstream 982818426a0f e792ae78 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-kasan-gce 2023/02/25 08:08 upstream a93e884edf61 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-kasan-gce-smack-root 2023/02/04 09:30 upstream 0136d86b7852 1b2f701a .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci2-upstream-fs 2023/01/24 03:04 upstream 7bf70dbb1882 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-kasan-gce 2023/01/19 12:35 upstream 7287904c8771 1b826a2f .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-qemu-upstream 2023/01/17 06:42 upstream d532dd102151 a63719e7 .config console log report info WARNING in call_timer_fn
ci-upstream-kasan-gce 2023/01/11 07:18 upstream 7dd4b804e080 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-kasan-gce-smack-root 2023/01/08 00:26 upstream 0a71553536d2 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-kasan-gce-smack-root 2023/01/04 18:30 upstream 69b41ac87e4a 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-kasan-gce-smack-root 2023/01/03 08:11 upstream 69b41ac87e4a ab32d508 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-kasan-gce-root 2022/12/30 21:25 upstream c8451c141e07 ab32d508 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-kasan-gce-selinux-root 2022/12/25 06:09 upstream 72a85e2b0a1e 9da18ae8 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-kasan-gce-smack-root 2022/12/21 06:01 upstream b6bb9676f216 d3e76707 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-qemu-upstream 2022/12/05 06:57 upstream 0ba09b173387 e080de16 .config console log report info WARNING in call_timer_fn
ci-upstream-kasan-gce-smack-root 2022/11/24 23:39 upstream c3eb11fbb826 62e26685 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-qemu-upstream-386 2022/11/30 13:51 upstream 01f856ae6d0c 4c2a66e8 .config console log report info WARNING in call_timer_fn
ci-upstream-bpf-kasan-gce 2023/01/28 12:57 bpf 5416c9aea832 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-kasan-gce 2023/01/23 07:02 bpf 74bc3a5acc82 44388686 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-kasan-gce 2022/12/14 13:11 bpf 01de1123322e f6511626 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-kasan-gce 2022/12/09 20:13 bpf 87a39882b5ab 67be1ae7 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-kasan-gce 2022/11/29 21:29 bpf e493bec343fa 05dc7993 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2023/02/10 08:09 bpf-next 06744f24696e 07980f9d .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2023/01/25 19:31 bpf-next b613d335a743 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2023/01/17 20:39 bpf-next c1177979af9c aedf5331 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2023/01/12 10:28 bpf-next db473df28906 96166539 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-net-kasan-gce 2023/01/05 03:47 net-next 1f47510ed50a 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2023/01/03 19:46 bpf-next 00883922ab40 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2023/01/01 16:45 bpf-next bb5747cfbc4b ab32d508 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2022/12/31 17:49 bpf-next bb5747cfbc4b ab32d508 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2022/12/27 22:58 bpf-next cfca00767feb 44712fbc .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2022/12/26 18:11 bpf-next cfca00767feb 9da18ae8 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-net-kasan-gce 2022/12/24 00:04 net-next c183e6c3ec34 9da18ae8 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2022/12/21 15:20 bpf-next 7b43df6c6ec3 4067838e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2022/12/18 09:33 bpf-next 0e43662e61f2 05494336 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2022/12/11 22:07 bpf-next 99523094de48 67be1ae7 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2022/12/10 07:26 bpf-next f3212ad5b7e9 67be1ae7 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-bpf-next-kasan-gce 2022/11/19 11:04 bpf-next ee748cd95e3a 5bb70014 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-linux-next-kasan-gce-root 2023/01/23 22:40 linux-next 691781f561e9 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
ci-upstream-linux-next-kasan-gce-root 2022/11/21 22:51 linux-next 15f3bff12cf6 1c576c23 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in call_timer_fn
* Struck through repros no longer work on HEAD.