syzbot


WARNING: locking bug in skb_queue_tail

Status: auto-obsoleted due to no activity on 2025/09/16 16:18
Subsystems: hams
[Documentation on labels]
First crash: 130d, last: 130d

Sample crash report:
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 1 PID: 31715 at kernel/locking/lockdep.c:238 hlock_class kernel/locking/lockdep.c:238 [inline]
WARNING: CPU: 1 PID: 31715 at kernel/locking/lockdep.c:238 check_wait_context kernel/locking/lockdep.c:4857 [inline]
WARNING: CPU: 1 PID: 31715 at kernel/locking/lockdep.c:238 __lock_acquire+0x379/0xd20 kernel/locking/lockdep.c:5190
Modules linked in:
CPU: 1 UID: 0 PID: 31715 Comm: syz.0.5104 Not tainted 6.15.0-syzkaller-12422-g2c7e4a2663a1 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:hlock_class kernel/locking/lockdep.c:238 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4857 [inline]
RIP: 0010:__lock_acquire+0x379/0xd20 kernel/locking/lockdep.c:5190
Code: eb 33 90 e8 19 99 1f 03 85 c0 74 22 83 3d 62 f7 02 0e 00 75 19 90 48 c7 c7 6c 85 b6 8d 48 c7 c6 57 03 a6 8d e8 18 ce e5 ff 90 <0f> 0b 90 90 90 31 c0 48 8b 3c 24 0f b6 98 c4 00 00 00 41 8b 46 20
RSP: 0018:ffffc9000411f870 EFLAGS: 00010046

RAX: 125df0eeed72d200 RBX: ffff8880588d9468 RCX: 0000000000080000
RDX: ffffc9000c8d9000 RSI: 000000000000163a RDI: 000000000000163b
RBP: 000000000000190a R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfaa44 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888079374718 R15: ffff8880793746f0
FS:  00007f59ccbb46c0(0000) GS:ffff888125d55000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3060fff8 CR3: 000000007fa08000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162
 skb_queue_tail+0x30/0xf0 net/core/skbuff.c:4033
 rose_transmit_link+0x2ea/0x740 net/rose/rose_link.c:281
 rose_write_internal+0x11dc/0x1ac0 net/rose/rose_subr.c:198
 rose_connect+0x8ee/0x10a0 net/rose/af_rose.c:879
 __sys_connect_file net/socket.c:2038 [inline]
 __sys_connect+0x313/0x440 net/socket.c:2057
 __do_sys_connect net/socket.c:2063 [inline]
 __se_sys_connect net/socket.c:2060 [inline]
 __x64_sys_connect+0x7a/0x90 net/socket.c:2060
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f59cbd8e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f59ccbb4038 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f59cbfb5fa0 RCX: 00007f59cbd8e929
RDX: 000000000000001c RSI: 00002000000000c0 RDI: 000000000000000d
RBP: 00007f59cbe10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f59cbfb5fa0 R15: 00007fff70e0fba8
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/10 14:16 net-next 2c7e4a2663a1 5d7e17ca .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING: locking bug in skb_queue_tail
* Struck through repros no longer work on HEAD.