program:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./config\x00', &(0x7f0000000040)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./config/dlm\x00', 0x1ff)
ioprio_set$pid(0x1, 0xffffffffffffffff, 0x2004)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./config/dlm/cluster1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster1/comms/1\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./config/dlm/cluster1/comms/1/addr\x00', 0x1, 0x0)
open_tree(r0, &(0x7f0000000080)='./debug/dlm/comms/1/rawmsg\x00', 0x5c1792218d909702)
write(r0, &(0x7f0000000200)='0200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000', 0x80)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000300)='./debug\x00', &(0x7f0000000340)='debugfs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./debug/dlm/comms/1/rawmsg\x00', 0x1, 0x0)
write(r1, &(0x7f0000000400)='\x00'/16, 0x10)
rmdir(&(0x7f0000000140)='./config/dlm/cluster1/comms/1\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff) (async)
mount(0x0, &(0x7f0000000000)='./config\x00', &(0x7f0000000040)='configfs\x00', 0x0, 0x0) (async)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./config/dlm\x00', 0x1ff) (async)
ioprio_set$pid(0x1, 0xffffffffffffffff, 0x2004) (async)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./config/dlm/cluster1\x00', 0x1ff) (async)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster1/comms/1\x00', 0x1ff) (async)
openat(0xffffffffffffff9c, &(0x7f0000000180)='./config/dlm/cluster1/comms/1/addr\x00', 0x1, 0x0) (async)
open_tree(r0, &(0x7f0000000080)='./debug/dlm/comms/1/rawmsg\x00', 0x5c1792218d909702) (async)
write(r0, &(0x7f0000000200)='0200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000', 0x80) (async)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./debug\x00', 0x1ff) (async)
mount(0x0, &(0x7f0000000300)='./debug\x00', &(0x7f0000000340)='debugfs\x00', 0x0, 0x0) (async)
openat(0xffffffffffffff9c, &(0x7f0000000380)='./debug/dlm/comms/1/rawmsg\x00', 0x1, 0x0) (async)
write(r1, &(0x7f0000000400)='\x00'/16, 0x10) (async)
rmdir(&(0x7f0000000140)='./config/dlm/cluster1/comms/1\x00') (async)
[ 94.818265][ T5284] Bluetooth: hci0: command tx timeout
[ 94.942485][ T5329] dlm: closing connection to node 1
[ 94.942584][ T5329] dlm: io handling for node: 1 stopped
[ 94.960792][ T5329] dlm: closing connection to node 1 done
[ 94.993896][ T5345] dlm: closing connection to node 1
[ 94.994235][ T5345] ------------[ cut here ]------------
[ 94.994242][ T5345] !con
[ 94.994256][ T5345] WARNING: fs/dlm/lowcomms.c:1455 at dlm_lowcomms_close+0x12d/0x440, CPU#0: syz.0.0/5345
[ 95.005496][ T5345] Modules linked in:
[ 95.007198][ T5345] CPU: 0 UID: 0 PID: 5345 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 95.011891][ T5345] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 95.016828][ T5345] RIP: 0010:dlm_lowcomms_close+0x12d/0x440
[ 95.019650][ T5345] Code: 29 b8 9f 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 f2 36 12 01 eb a2 e8 0b b8 9f 00 eb 05 e8 04 b8 9f 00 90 <0f> 0b 90 44 89 f7 e8 78 2a 5c 01 b8 fe ff ff ff 48 83 c4 20 5b 41
[ 95.027857][ T5345] RSP: 0018:ffffc9000e70fc40 EFLAGS: 00010293
[ 95.030741][ T5345] RAX: ffffffff81287e35 RBX: 0000000000000001 RCX: ffff88803d89a580
[ 95.034082][ T5345] RDX: 0000000000000000 RSI: ffffffff8e6f6237 RDI: ffffffff8c6def80
[ 95.037445][ T5345] RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff97bc7550
[ 95.040752][ T5345] R10: 00000000b890fb92 R11: 000000008751461e R12: 0000000000000000
[ 95.043963][ T5345] R13: ffffffff81287d68 R14: 0000000000000001 R15: 0000000000000000
[ 95.047213][ T5345] FS: 00007f1fdb5d46c0(0000) GS:ffff88808b0b0000(0000) knlGS:0000000000000000
[ 95.050967][ T5345] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 95.053550][ T5345] CR2: 000055cb85943168 CR3: 000000003e1c5000 CR4: 0000000000352ef0
[ 95.056703][ T5345] Call Trace:
[ 95.058177][ T5345]
[ 95.059584][ T5345] ? dlm_midcomms_close+0x3a9/0x4c0
[ 95.061988][ T5345] ? dlm_midcomms_close+0x4b/0x4c0
[ 95.064187][ T5345] drop_comm+0x61/0x190
[ 95.065922][ T5345] ? configfs_rmdir+0x850/0x950
[ 95.067950][ T5345] ? __pfx_drop_comm+0x10/0x10
[ 95.070052][ T5345] configfs_rmdir+0x85f/0x950
[ 95.072013][ T5345] vfs_rmdir+0x3e6/0x6a0
[ 95.073955][ T5345] ? bpf_lsm_path_rmdir+0x9/0x20
[ 95.076094][ T5345] filename_rmdir+0x292/0x520
[ 95.078137][ T5345] ? __pfx_filename_rmdir+0x10/0x10
[ 95.080362][ T5345] ? do_getname+0x151/0x250
[ 95.082213][ T5345] __se_sys_rmdir+0x2e/0x140
[ 95.084210][ T5345] do_syscall_64+0x166/0x520
[ 95.086233][ T5345] ? trace_irq_disable+0x3b/0x140
[ 95.088432][ T5345] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.091151][ T5345] ? clear_bhb_loop+0x70/0xc0
[ 95.093235][ T5345] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.095856][ T5345] RIP: 0033:0x7f1fdf19f559
[ 95.097803][ T5345] 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
[ 95.105930][ T5345] RSP: 002b:00007f1fdb5d3fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 95.109932][ T5345] RAX: ffffffffffffffda RBX: 00007f1fdf426cc0 RCX: 00007f1fdf19f559
[ 95.113205][ T5345] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000140
[ 95.116429][ T5345] RBP: 00007f1fdf236b20 R08: 0000000000000000 R09: 0000000000000000
[ 95.119743][ T5345] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 95.123004][ T5345] R13: 00007f1fdf426d58 R14: 00007f1fdf426cc0 R15: 00007ffd4f9b66e8
[ 95.126233][ T5345]
[ 95.127562][ T5345] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 95.130654][ T5345] CPU: 0 UID: 0 PID: 5345 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 95.134363][ T5345] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 95.138177][ T5345] Call Trace:
[ 95.139600][ T5345]
[ 95.140871][ T5345] vpanic+0x56d/0xa60
[ 95.142590][ T5345] ? __pfx__printk+0x10/0x10
[ 95.144591][ T5345] ? __pfx_vpanic+0x10/0x10
[ 95.146517][ T5345] ? is_bpf_text_address+0x292/0x2b0
[ 95.149089][ T5345] ? is_bpf_text_address+0x26/0x2b0
[ 95.151285][ T5345] panic+0xc5/0xd0
[ 95.152867][ T5345] ? __pfx_panic+0x10/0x10
[ 95.154763][ T5345] __warn+0x315/0x4c0
[ 95.156448][ T5345] ? dlm_lowcomms_close+0x12d/0x440
[ 95.158684][ T5345] ? dlm_lowcomms_close+0x12d/0x440
[ 95.160911][ T5345] __report_bug+0x276/0x570
[ 95.164211][ T5345] ? check_path+0x21/0x40
[ 95.166021][ T5345] ? dlm_lowcomms_close+0x12d/0x440
[ 95.168156][ T5345] ? __pfx___report_bug+0x10/0x10
[ 95.170223][ T5345] ? lockdep_unlock+0x5c/0xd0
[ 95.172213][ T5345] ? __lock_acquire+0x1511/0x2de0
[ 95.174319][ T5345] ? dlm_lowcomms_close+0x12d/0x440
[ 95.176419][ T5345] report_bug+0x16b/0x220
[ 95.178240][ T5345] ? dlm_lowcomms_close+0x12d/0x440
[ 95.180337][ T5345] ? dlm_lowcomms_close+0x12f/0x440
[ 95.183014][ T5345] handle_bug+0x9c/0x200
[ 95.184769][ T5345] exc_invalid_op+0x1a/0x50
[ 95.186784][ T5345] asm_exc_invalid_op+0x1a/0x20
[ 95.188828][ T5345] RIP: 0010:dlm_lowcomms_close+0x12d/0x440
[ 95.191450][ T5345] Code: 29 b8 9f 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 f2 36 12 01 eb a2 e8 0b b8 9f 00 eb 05 e8 04 b8 9f 00 90 <0f> 0b 90 44 89 f7 e8 78 2a 5c 01 b8 fe ff ff ff 48 83 c4 20 5b 41
[ 95.199532][ T5345] RSP: 0018:ffffc9000e70fc40 EFLAGS: 00010293
[ 95.202268][ T5345] RAX: ffffffff81287e35 RBX: 0000000000000001 RCX: ffff88803d89a580
[ 95.205466][ T5345] RDX: 0000000000000000 RSI: ffffffff8e6f6237 RDI: ffffffff8c6def80
[ 95.208931][ T5345] RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff97bc7550
[ 95.212167][ T5345] R10: 00000000b890fb92 R11: 000000008751461e R12: 0000000000000000
[ 95.215578][ T5345] R13: ffffffff81287d68 R14: 0000000000000001 R15: 0000000000000000
[ 95.219148][ T5345] ? dlm_lowcomms_close+0x58/0x440
[ 95.221566][ T5345] ? dlm_lowcomms_close+0x125/0x440
[ 95.223740][ T5345] ? dlm_midcomms_close+0x3a9/0x4c0
[ 95.225986][ T5345] ? dlm_midcomms_close+0x4b/0x4c0
[ 95.228301][ T5345] drop_comm+0x61/0x190
[ 95.230125][ T5345] ? configfs_rmdir+0x850/0x950
[ 95.232275][ T5345] ? __pfx_drop_comm+0x10/0x10
[ 95.234323][ T5345] configfs_rmdir+0x85f/0x950
[ 95.236327][ T5345] vfs_rmdir+0x3e6/0x6a0
[ 95.238174][ T5345] ? bpf_lsm_path_rmdir+0x9/0x20
[ 95.240449][ T5345] filename_rmdir+0x292/0x520
[ 95.242470][ T5345] ? __pfx_filename_rmdir+0x10/0x10
[ 95.244723][ T5345] ? do_getname+0x151/0x250
[ 95.246798][ T5345] __se_sys_rmdir+0x2e/0x140
[ 95.248806][ T5345] do_syscall_64+0x166/0x520
[ 95.250868][ T5345] ? trace_irq_disable+0x3b/0x140
[ 95.253084][ T5345] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.255746][ T5345] ? clear_bhb_loop+0x70/0xc0
[ 95.257781][ T5345] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.260296][ T5345] RIP: 0033:0x7f1fdf19f559
[ 95.262231][ T5345] 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
[ 95.270797][ T5345] RSP: 002b:00007f1fdb5d3fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 95.274761][ T5345] RAX: ffffffffffffffda RBX: 00007f1fdf426cc0 RCX: 00007f1fdf19f559
[ 95.278837][ T5345] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000140
[ 95.282202][ T5345] RBP: 00007f1fdf236b20 R08: 0000000000000000 R09: 0000000000000000
[ 95.285506][ T5345] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 95.288841][ T5345] R13: 00007f1fdf426d58 R14: 00007f1fdf426cc0 R15: 00007ffd4f9b66e8
[ 95.292488][ T5345]
[ 95.294420][ T5345] Kernel Offset: disabled
[ 95.296396][ T5345] Rebooting in 86400 seconds..