program:
r0 = socket$inet_udp(0x2, 0x2, 0x0)
bind$inet(r0, &(0x7f0000000240)={0x2, 0x0, @local}, 0x6f) (async, rerun: 64)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff) (rerun: 64)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0) (async)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/dlm\x00', 0x1ff) (async, rerun: 64)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster1\x00', 0x1ff) (async, rerun: 64)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/dlm/cluster1/comms/1\x00', 0x1ff) (async, rerun: 32)
r1 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster1/comms/1/addr\x00', 0x1, 0x0) (rerun: 32)
write(r1, &(0x7f0000000280)='0200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000', 0x80) (async, rerun: 32)
mkdirat(0xffffffffffffff9c, &(0x7f0000000380)='./debug\x00', 0x1ff) (rerun: 32)
mount(0x0, &(0x7f00000003c0)='./debug\x00', &(0x7f0000000400)='debugfs\x00', 0x0, 0x0) (async)
r2 = openat(r1, &(0x7f0000000440)='./debug/dlm/comms/1/rawmsg\x00', 0x1, 0x0)
write(r2, &(0x7f00000004c0)='\x00'/16, 0x10) (async)
rmdir(&(0x7f0000000500)='./config/dlm/cluster1/comms/1\x00')
connect$inet(r0, &(0x7f0000000480)={0x2, 0x0, @multicast1}, 0x10)
sendmmsg(r0, &(0x7f0000007fc0), 0x800001d, 0x300)
unlinkat(r2, &(0x7f0000000200)='./config\x00', 0x200) (async)
setsockopt$inet_int(r0, 0x0, 0x17, 0x0, 0x0) (async)
setsockopt$inet_int(r0, 0x0, 0xe, &(0x7f0000000080)=0x3, 0x4)
[ 103.098962][ T4665] Bluetooth: hci0: command tx timeout
[ 103.190028][ T5350] dlm: closing connection to node 1
[ 103.190374][ T5350] ------------[ cut here ]------------
[ 103.190382][ T5350] !con
[ 103.190386][ T5350] WARNING: fs/dlm/lowcomms.c:1453 at dlm_lowcomms_close+0x12d/0x440, CPU#0: syz.0.0/5350
[ 103.201549][ T5350] Modules linked in:
[ 103.203437][ T5350] CPU: 0 UID: 0 PID: 5350 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 103.207544][ T5350] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 103.211915][ T5350] RIP: 0010:dlm_lowcomms_close+0x12d/0x440
[ 103.214239][ T5350] Code: 69 98 a0 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 52 3b 19 01 eb a2 e8 4b 98 a0 00 eb 05 e8 44 98 a0 00 90 <0f> 0b 90 44 89 f7 e8 68 8c 63 01 b8 fe ff ff ff 48 83 c4 20 5b 41
[ 103.222393][ T5350] RSP: 0018:ffffc9000f0bfc40 EFLAGS: 00010293
[ 103.224993][ T5350] RAX: ffffffff812888e5 RBX: 0000000000000001 RCX: ffff888036068000
[ 103.228619][ T5350] RDX: 0000000000000000 RSI: ffffffff8e939950 RDI: ffffffff8c8ebe80
[ 103.232098][ T5350] RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff9806db50
[ 103.235580][ T5350] R10: 00000000d7e6ba69 R11: 00000000952aeabb R12: 0000000000000000
[ 103.238967][ T5350] R13: ffffffff81288818 R14: 0000000000000000 R15: 0000000000000000
[ 103.242336][ T5350] FS: 00007f6d615eb6c0(0000) GS:ffff88808aa01000(0000) knlGS:0000000000000000
[ 103.246050][ T5350] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 103.248893][ T5350] CR2: 00007f6d61587fe8 CR3: 0000000023eb9000 CR4: 0000000000352ef0
[ 103.252377][ T5350] Call Trace:
[ 103.253898][ T5350]
[ 103.255348][ T5350] ? dlm_midcomms_close+0x3a9/0x4c0
[ 103.257716][ T5350] ? dlm_midcomms_close+0x4b/0x4c0
[ 103.260034][ T5350] drop_comm+0x61/0x190
[ 103.261882][ T5350] ? configfs_rmdir+0x850/0x950
[ 103.263939][ T5350] ? __pfx_drop_comm+0x10/0x10
[ 103.266156][ T5350] configfs_rmdir+0x85f/0x950
[ 103.268032][ T5350] vfs_rmdir+0x3e6/0x6f0
[ 103.269850][ T5350] ? bpf_lsm_path_rmdir+0x9/0x20
[ 103.271960][ T5350] filename_rmdir+0x276/0x500
[ 103.274212][ T5350] ? __pfx_filename_rmdir+0x10/0x10
[ 103.276574][ T5350] ? do_getname+0x151/0x250
[ 103.278544][ T5350] __se_sys_rmdir+0x2e/0x140
[ 103.280501][ T5350] do_syscall_64+0x166/0x520
[ 103.282587][ T5350] ? trace_irq_disable+0x3b/0x140
[ 103.284787][ T5350] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 103.287399][ T5350] ? clear_bhb_loop+0x70/0xc0
[ 103.289506][ T5350] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 103.292517][ T5350] RIP: 0033:0x7f6d6079f559
[ 103.294928][ T5350] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
[ 103.302795][ T5350] RSP: 002b:00007f6d615eafe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 103.306384][ T5350] RAX: ffffffffffffffda RBX: 00007f6d60a26090 RCX: 00007f6d6079f559
[ 103.309745][ T5350] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000500
[ 103.313246][ T5350] RBP: 00007f6d60836b50 R08: 0000000000000000 R09: 0000000000000000
[ 103.316674][ T5350] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 103.320094][ T5350] R13: 00007f6d60a26128 R14: 00007f6d60a26090 R15: 00007ffe3db946d8
[ 103.323558][ T5350]
[ 103.325119][ T5350] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 103.328115][ T5350] CPU: 0 UID: 0 PID: 5350 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 103.331963][ T5350] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 103.336270][ T5350] Call Trace:
[ 103.337766][ T5350]
[ 103.339040][ T5350] vpanic+0x26f/0x710
[ 103.340702][ T5350] panic+0xc5/0xd0
[ 103.342279][ T5350] ? __pfx_panic+0x10/0x10
[ 103.344109][ T5350] __warn+0x315/0x4c0
[ 103.345794][ T5350] ? dlm_lowcomms_close+0x12d/0x440
[ 103.348056][ T5350] ? dlm_lowcomms_close+0x12d/0x440
[ 103.350460][ T5350] __report_bug+0x276/0x570
[ 103.352549][ T5350] ? ktime_get+0x1f5/0x220
[ 103.354542][ T5350] ? dlm_lowcomms_close+0x12d/0x440
[ 103.356851][ T5350] ? __pfx___report_bug+0x10/0x10
[ 103.359139][ T5350] ? irqentry_exit+0x2a0/0x9b0
[ 103.361190][ T5350] ? lockdep_hardirqs_on+0x7b/0x110
[ 103.362986][ T5350] ? dlm_lowcomms_close+0x12d/0x440
[ 103.365206][ T5350] report_bug+0x16b/0x220
[ 103.367285][ T5350] ? dlm_lowcomms_close+0x12d/0x440
[ 103.369777][ T5350] ? dlm_lowcomms_close+0x12f/0x440
[ 103.372109][ T5350] handle_bug+0x9c/0x200
[ 103.374034][ T5350] exc_invalid_op+0x1a/0x50
[ 103.376225][ T5350] asm_exc_invalid_op+0x1a/0x20
[ 103.378579][ T5350] RIP: 0010:dlm_lowcomms_close+0x12d/0x440
[ 103.381120][ T5350] Code: 69 98 a0 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 52 3b 19 01 eb a2 e8 4b 98 a0 00 eb 05 e8 44 98 a0 00 90 <0f> 0b 90 44 89 f7 e8 68 8c 63 01 b8 fe ff ff ff 48 83 c4 20 5b 41
[ 103.389503][ T5350] RSP: 0018:ffffc9000f0bfc40 EFLAGS: 00010293
[ 103.392163][ T5350] RAX: ffffffff812888e5 RBX: 0000000000000001 RCX: ffff888036068000
[ 103.395751][ T5350] RDX: 0000000000000000 RSI: ffffffff8e939950 RDI: ffffffff8c8ebe80
[ 103.399328][ T5350] RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff9806db50
[ 103.402671][ T5350] R10: 00000000d7e6ba69 R11: 00000000952aeabb R12: 0000000000000000
[ 103.406119][ T5350] R13: ffffffff81288818 R14: 0000000000000000 R15: 0000000000000000
[ 103.409522][ T5350] ? dlm_lowcomms_close+0x58/0x440
[ 103.411692][ T5350] ? dlm_lowcomms_close+0x125/0x440
[ 103.414066][ T5350] ? dlm_midcomms_close+0x3a9/0x4c0
[ 103.416398][ T5350] ? dlm_midcomms_close+0x4b/0x4c0
[ 103.418674][ T5350] drop_comm+0x61/0x190
[ 103.420776][ T5350] ? configfs_rmdir+0x850/0x950
[ 103.422859][ T5350] ? __pfx_drop_comm+0x10/0x10
[ 103.424970][ T5350] configfs_rmdir+0x85f/0x950
[ 103.427067][ T5350] vfs_rmdir+0x3e6/0x6f0
[ 103.429054][ T5350] ? bpf_lsm_path_rmdir+0x9/0x20
[ 103.431351][ T5350] filename_rmdir+0x276/0x500
[ 103.433473][ T5350] ? __pfx_filename_rmdir+0x10/0x10
[ 103.435772][ T5350] ? do_getname+0x151/0x250
[ 103.437774][ T5350] __se_sys_rmdir+0x2e/0x140
[ 103.440005][ T5350] do_syscall_64+0x166/0x520
[ 103.442049][ T5350] ? trace_irq_disable+0x3b/0x140
[ 103.444398][ T5350] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 103.446941][ T5350] ? clear_bhb_loop+0x70/0xc0
[ 103.448980][ T5350] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 103.451448][ T5350] RIP: 0033:0x7f6d6079f559
[ 103.453333][ T5350] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
[ 103.461825][ T5350] RSP: 002b:00007f6d615eafe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 103.465596][ T5350] RAX: ffffffffffffffda RBX: 00007f6d60a26090 RCX: 00007f6d6079f559
[ 103.469137][ T5350] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000500
[ 103.472619][ T5350] RBP: 00007f6d60836b50 R08: 0000000000000000 R09: 0000000000000000
[ 103.475861][ T5350] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 103.479206][ T5350] R13: 00007f6d60a26128 R14: 00007f6d60a26090 R15: 00007ffe3db946d8
[ 103.482958][ T5350]
[ 103.484703][ T5350] Kernel Offset: disabled
[ 103.486672][ T5350] Rebooting in 86400 seconds..