program:
mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000480)='./config\x00', &(0x7f00000004c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000500)='./config/dlm\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/dlm/cluster1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000580)='./config/dlm/cluster1/comms/1\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000880)='./config/dlm/cluster1/comms/1/addr\x00', 0x0, 0x10)
write(r0, &(0x7f0000000600)='0200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000', 0x80)
ioctl$VIDIOC_G_FBUF(r0, 0x8030560a, &(0x7f00000009c0)={0x0, 0x41, &(0x7f00000008c0)="dd9933020f12244f5fb20d7b43891a3e0c54c7ad2a253fa6198c98eddec594946d63ed019fd123e524ce8d1a6ae41b0a995ec92b3047c6f51aa7bc7a9f0d35e2b20b306c46b1494381d1e076ab0c8226e00ee25d6d3e4a2c6308d2d4271895183fd68d48fd5b111a9d0313311be80fb7d12cdf5a863ec9c35ed5c9c4e21c427191f7ea4068cb0e64b58887655387b9ba805edda4030021fb9c0aa911925987fc2cc2adf59e5360804e939acaf4b1c5e866e7e32a33c8542c0aeb40deabd583472d927fba006ae07d79724adf501628914f99225c979f9d776583", {0x683, 0x3, 0xb5315258, 0x0, 0x8, 0x8, 0x1, 0x6}})
mkdirat(0xffffffffffffff9c, &(0x7f0000000700)='./debug\x00', 0x177)
mount(0x0, &(0x7f0000000740)='./debug\x00', &(0x7f0000000780)='debugfs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f00000007c0)='./debug/dlm/comms/1/rawmsg\x00', 0x1, 0x0)
write(r1, &(0x7f0000000800)='\x00'/16, 0x10)
rmdir(&(0x7f0000000840)='./config/dlm/cluster1/comms/1\x00')
r2 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000280), 0x2, 0x0)
setresuid(0x0, 0x0, 0xee01)
ioctl$FS_IOC_GETFLAGS(r2, 0x80086601, &(0x7f00000005c0))
syz_mount_image$fuse(&(0x7f00000002c0), &(0x7f0000000300)='./file0\x00', 0x4000, &(0x7f0000000340)={{'fd', 0x3d, r2}, 0x2c, {'rootmode', 0x3d, 0x4000}}, 0x0, 0x0, 0x0)
open(&(0x7f00000003c0)='./file0\x00', 0x149040, 0x10)
utime(&(0x7f0000000400)='./file0\x00', 0x0)
r3 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000000)='cpu.stat\x00', 0x275a, 0x0)
ioctl$FS_IOC_GETFSMAP(r3, 0xc0c0583b, &(0x7f0000000080)={0x0, 0x2904c, 0x0, 0x10003, '\x00', [{0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x8000000000000001}, {0xffffffff, 0x0, 0x0, 0x1, 0xffffffffffffffff}]})
ioctl$SNDRV_CTL_IOCTL_RAWMIDI_INFO(r3, 0xc10c5541, &(0x7f0000000140)={0xb16, 0xf, 0x1})
mbind(&(0x7f0000ffa000/0x4000)=nil, 0x4000, 0x3, &(0x7f0000000040)=0xbf1e00000, 0x76, 0x0)
[ 132.664860][ T4665] Bluetooth: hci0: command tx timeout
[ 132.790462][ T5358] dlm: closing connection to node 1
[ 132.790776][ T5358] ------------[ cut here ]------------
[ 132.790783][ T5358] !con
[ 132.790789][ T5358] WARNING: fs/dlm/lowcomms.c:1453 at dlm_lowcomms_close+0x12d/0x440, CPU#0: syz.0.0/5358
[ 132.801436][ T5358] Modules linked in:
[ 132.803293][ T5358] CPU: 0 UID: 0 PID: 5358 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 132.807299][ T5358] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 132.811852][ T5358] RIP: 0010:dlm_lowcomms_close+0x12d/0x440
[ 132.814518][ T5358] Code: 59 9c a0 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 42 34 19 01 eb a2 e8 3b 9c a0 00 eb 05 e8 34 9c a0 00 90 <0f> 0b 90 44 89 f7 e8 58 ad 63 01 b8 fe ff ff ff 48 83 c4 20 5b 41
[ 132.822908][ T5358] RSP: 0000:ffffc9000e41fc40 EFLAGS: 00010283
[ 132.825521][ T5358] RAX: ffffffff812888b5 RBX: 0000000000000001 RCX: 0000000000100000
[ 132.829190][ T5358] RDX: ffffc9000ef02000 RSI: 00000000000007d4 RDI: 00000000000007d5
[ 132.832656][ T5358] RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff98064b50
[ 132.836028][ T5358] R10: 00000000980c3d52 R11: 000000008805c45e R12: 0000000000000000
[ 132.839361][ T5358] R13: ffffffff812887e8 R14: 0000000000000000 R15: 0000000000000000
[ 132.842897][ T5358] FS: 00007fb3a21236c0(0000) GS:ffff88808aa11000(0000) knlGS:0000000000000000
[ 132.846837][ T5358] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 132.849925][ T5358] CR2: 00007ff991dec370 CR3: 000000004524a000 CR4: 0000000000352ef0
[ 132.853275][ T5358] Call Trace:
[ 132.854858][ T5358]
[ 132.856226][ T5358] ? dlm_midcomms_close+0x3a9/0x4c0
[ 132.858830][ T5358] ? dlm_midcomms_close+0x4b/0x4c0
[ 132.861142][ T5358] drop_comm+0x61/0x190
[ 132.863012][ T5358] ? configfs_rmdir+0x850/0x950
[ 132.865254][ T5358] ? __pfx_drop_comm+0x10/0x10
[ 132.867362][ T5358] configfs_rmdir+0x85f/0x950
[ 132.869187][ T5358] vfs_rmdir+0x3e6/0x6a0
[ 132.870943][ T5358] ? bpf_lsm_path_rmdir+0x9/0x20
[ 132.873035][ T5358] filename_rmdir+0x292/0x520
[ 132.874911][ T5358] ? __pfx_filename_rmdir+0x10/0x10
[ 132.877174][ T5358] ? do_getname+0x151/0x250
[ 132.879584][ T5358] __se_sys_rmdir+0x2e/0x140
[ 132.881954][ T5358] do_syscall_64+0x166/0x520
[ 132.884061][ T5358] ? trace_irq_disable+0x3b/0x140
[ 132.886307][ T5358] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 132.888972][ T5358] ? clear_bhb_loop+0x70/0xc0
[ 132.890984][ T5358] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 132.893606][ T5358] RIP: 0033:0x7fb3a119f559
[ 132.895567][ T5358] 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
[ 132.903107][ T5358] RSP: 002b:00007fb3a2122fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 132.906707][ T5358] RAX: ffffffffffffffda RBX: 00007fb3a1425fa0 RCX: 00007fb3a119f559
[ 132.909895][ T5358] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000840
[ 132.912893][ T5358] RBP: 00007fb3a1236b20 R08: 0000000000000000 R09: 0000000000000000
[ 132.916229][ T5358] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 132.919528][ T5358] R13: 00007fb3a1426038 R14: 00007fb3a1425fa0 R15: 00007ffecabc1a08
[ 132.923061][ T5358]
[ 132.924510][ T5358] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 132.927630][ T5358] CPU: 0 UID: 0 PID: 5358 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 132.931381][ T5358] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 132.935490][ T5358] Call Trace:
[ 132.937011][ T5358]
[ 132.938353][ T5358] vpanic+0x26f/0x710
[ 132.940184][ T5358] panic+0xc5/0xd0
[ 132.941861][ T5358] ? __pfx_panic+0x10/0x10
[ 132.945788][ T5358] __warn+0x315/0x4c0
[ 132.947560][ T5358] ? dlm_lowcomms_close+0x12d/0x440
[ 132.949770][ T5358] ? dlm_lowcomms_close+0x12d/0x440
[ 132.952038][ T5358] __report_bug+0x276/0x570
[ 132.954048][ T5358] ? check_path+0x21/0x40
[ 132.956296][ T5358] ? dlm_lowcomms_close+0x12d/0x440
[ 132.958580][ T5358] ? __pfx___report_bug+0x10/0x10
[ 132.960819][ T5358] ? lockdep_unlock+0x5c/0xd0
[ 132.962929][ T5358] ? __lock_acquire+0x1511/0x2de0
[ 132.965206][ T5358] ? dlm_lowcomms_close+0x12d/0x440
[ 132.967533][ T5358] report_bug+0x16b/0x220
[ 132.969435][ T5358] ? dlm_lowcomms_close+0x12d/0x440
[ 132.971692][ T5358] ? dlm_lowcomms_close+0x12f/0x440
[ 132.973978][ T5358] handle_bug+0x9c/0x200
[ 132.975796][ T5358] exc_invalid_op+0x1a/0x50
[ 132.977745][ T5358] asm_exc_invalid_op+0x1a/0x20
[ 132.979909][ T5358] RIP: 0010:dlm_lowcomms_close+0x12d/0x440
[ 132.982441][ T5358] Code: 59 9c a0 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 42 34 19 01 eb a2 e8 3b 9c a0 00 eb 05 e8 34 9c a0 00 90 <0f> 0b 90 44 89 f7 e8 58 ad 63 01 b8 fe ff ff ff 48 83 c4 20 5b 41
[ 132.990595][ T5358] RSP: 0000:ffffc9000e41fc40 EFLAGS: 00010283
[ 132.993044][ T5358] RAX: ffffffff812888b5 RBX: 0000000000000001 RCX: 0000000000100000
[ 132.996382][ T5358] RDX: ffffc9000ef02000 RSI: 00000000000007d4 RDI: 00000000000007d5
[ 132.999793][ T5358] RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff98064b50
[ 133.003108][ T5358] R10: 00000000980c3d52 R11: 000000008805c45e R12: 0000000000000000
[ 133.006459][ T5358] R13: ffffffff812887e8 R14: 0000000000000000 R15: 0000000000000000
[ 133.009902][ T5358] ? dlm_lowcomms_close+0x58/0x440
[ 133.012114][ T5358] ? dlm_lowcomms_close+0x125/0x440
[ 133.014373][ T5358] ? dlm_midcomms_close+0x3a9/0x4c0
[ 133.016592][ T5358] ? dlm_midcomms_close+0x4b/0x4c0
[ 133.018782][ T5358] drop_comm+0x61/0x190
[ 133.020624][ T5358] ? configfs_rmdir+0x850/0x950
[ 133.022719][ T5358] ? __pfx_drop_comm+0x10/0x10
[ 133.024821][ T5358] configfs_rmdir+0x85f/0x950
[ 133.026841][ T5358] vfs_rmdir+0x3e6/0x6a0
[ 133.028675][ T5358] ? bpf_lsm_path_rmdir+0x9/0x20
[ 133.030718][ T5358] filename_rmdir+0x292/0x520
[ 133.032736][ T5358] ? __pfx_filename_rmdir+0x10/0x10
[ 133.034960][ T5358] ? do_getname+0x151/0x250
[ 133.036928][ T5358] __se_sys_rmdir+0x2e/0x140
[ 133.038933][ T5358] do_syscall_64+0x166/0x520
[ 133.040982][ T5358] ? trace_irq_disable+0x3b/0x140
[ 133.043110][ T5358] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 133.045492][ T5358] ? clear_bhb_loop+0x70/0xc0
[ 133.047547][ T5358] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 133.050048][ T5358] RIP: 0033:0x7fb3a119f559
[ 133.051883][ T5358] 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
[ 133.060620][ T5358] RSP: 002b:00007fb3a2122fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 133.064429][ T5358] RAX: ffffffffffffffda RBX: 00007fb3a1425fa0 RCX: 00007fb3a119f559
[ 133.067977][ T5358] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000840
[ 133.071324][ T5358] RBP: 00007fb3a1236b20 R08: 0000000000000000 R09: 0000000000000000
[ 133.074698][ T5358] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 133.077922][ T5358] R13: 00007fb3a1426038 R14: 00007fb3a1425fa0 R15: 00007ffecabc1a08
[ 133.081382][ T5358]
[ 133.083170][ T5358] Kernel Offset: disabled
[ 133.085046][ T5358] Rebooting in 86400 seconds..