program:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./config\x00', &(0x7f0000000040)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./config/dlm\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./config/dlm/cluster1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster1/comms/1\x00', 0x1ff)
write(0xffffffffffffffff, &(0x7f0000000200)='0200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000', 0x80)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./debug\x00', 0x1ff)
prctl$PR_SET_MM_MAP(0x23, 0xe, &(0x7f0000000540)={&(0x7f0000ffa000/0x3000)=nil, &(0x7f0000ff9000/0x2000)=nil, &(0x7f0000ff9000/0x4000)=nil, &(0x7f0000ffb000/0x1000)=nil, &(0x7f0000ffc000/0x1000)=nil, &(0x7f0000ffe000/0x1000)=nil, &(0x7f0000ff9000/0x1000)=nil, &(0x7f0000ff9000/0x4000)=nil, &(0x7f0000ffb000/0x4000)=nil, &(0x7f0000ffb000/0x3000)=nil, &(0x7f0000ffc000/0x1000)=nil, &(0x7f0000000080)="b5194f42efba3d68c8b040ffb88ce9942e52290ad5a86d21a2badffeceac006b4d4e33", 0x23}, 0x68)
mount(0x0, &(0x7f0000000300)='./debug\x00', &(0x7f0000000340)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./debug/dlm/comms/1/rawmsg\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='\x00'/16, 0x10)
rmdir(&(0x7f0000000140)='./config/dlm/cluster1/comms/1\x00')
syz_mount_image$ext4(&(0x7f0000000100)='ext4\x00', &(0x7f0000000480)='./file1\x00', 0x0, &(0x7f00000004c0)={[{@bsdgroups}, {@inlinecrypt}, {@jqfmt_vfsv1}, {@oldalloc}, {@dioread_nolock}, {@usrjquota}]}, 0xff, 0x44d, &(0x7f0000000d80)="$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")
r1 = syz_open_dev$loop(&(0x7f0000000640), 0x0, 0x22400)
sendfile(0xffffffffffffffff, r1, 0x0, 0x80000002)
[ 94.583869][ T4640] Bluetooth: hci0: command tx timeout
[ 94.710698][ T5312] dlm: closing connection to node 1
[ 94.710974][ T5312] ------------[ cut here ]------------
[ 94.710983][ T5312] !con
[ 94.710988][ T5312] WARNING: fs/dlm/lowcomms.c:1455 at dlm_lowcomms_close+0x12d/0x440, CPU#0: syz.0.0/5312
[ 94.722165][ T5312] Modules linked in:
[ 94.725632][ T5312] CPU: 0 UID: 0 PID: 5312 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 94.731004][ T5312] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 94.737027][ T5312] RIP: 0010:dlm_lowcomms_close+0x12d/0x440
[ 94.740593][ T5312] Code: 99 5e 9f 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 52 fd 10 01 eb a2 e8 7b 5e 9f 00 eb 05 e8 74 5e 9f 00 90 <0f> 0b 90 44 89 f7 e8 c8 61 5a 01 b8 fe ff ff ff 48 83 c4 20 5b 41
[ 94.750867][ T5312] RSP: 0000:ffffc9000f1f7c40 EFLAGS: 00010287
[ 94.754006][ T5312] RAX: ffffffff81287d45 RBX: 0000000000000001 RCX: 0000000000100000
[ 94.757937][ T5312] RDX: ffffc9000f689000 RSI: 0000000000000802 RDI: 0000000000000803
[ 94.761909][ T5312] RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff96bafad0
[ 94.765850][ T5312] R10: 00000000b8a5a85b R11: 00000000296d98fe R12: 0000000000000000
[ 94.770901][ T5312] R13: ffffffff81287c78 R14: 0000000000000000 R15: 0000000000000000
[ 94.776407][ T5312] FS: 00007f65c63116c0(0000) GS:ffff88808c2c6000(0000) knlGS:0000000000000000
[ 94.781307][ T5312] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 94.784819][ T5312] CR2: 00007f2eb2aafb60 CR3: 000000001267a000 CR4: 0000000000352ef0
[ 94.788676][ T5312] Call Trace:
[ 94.790241][ T5312]
[ 94.791622][ T5312] ? dlm_midcomms_close+0x3a9/0x4c0
[ 94.794633][ T5312] ? dlm_midcomms_close+0x4b/0x4c0
[ 94.797436][ T5312] drop_comm+0x61/0x190
[ 94.800087][ T5312] ? configfs_rmdir+0x850/0x950
[ 94.802589][ T5312] ? __pfx_drop_comm+0x10/0x10
[ 94.805508][ T5312] configfs_rmdir+0x85f/0x950
[ 94.808180][ T5312] vfs_rmdir+0x3e6/0x6a0
[ 94.810431][ T5312] ? bpf_lsm_path_rmdir+0x9/0x20
[ 94.812731][ T5312] filename_rmdir+0x292/0x520
[ 94.815122][ T5312] ? __pfx_filename_rmdir+0x10/0x10
[ 94.823751][ T5312] ? do_getname+0x151/0x250
[ 94.825952][ T5312] __se_sys_rmdir+0x2e/0x140
[ 94.828064][ T5312] do_syscall_64+0x166/0x520
[ 94.830440][ T5312] ? trace_irq_disable+0x3b/0x140
[ 94.832842][ T5312] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.836853][ T5312] ? clear_bhb_loop+0x70/0xc0
[ 94.840156][ T5312] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.842672][ T5312] RIP: 0033:0x7f65c539e159
[ 94.844461][ T5312] 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
[ 94.854723][ T5312] RSP: 002b:00007f65c6310fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 94.858399][ T5312] RAX: ffffffffffffffda RBX: 00007f65c5625fa0 RCX: 00007f65c539e159
[ 94.861755][ T5312] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000140
[ 94.864805][ T5312] RBP: 00007f65c543503b R08: 0000000000000000 R09: 0000000000000000
[ 94.868056][ T5312] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 94.871439][ T5312] R13: 00007f65c5626038 R14: 00007f65c5625fa0 R15: 00007fff8bcfa2a8
[ 94.874265][ T5312]
[ 94.875358][ T5312] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 94.877741][ T5312] CPU: 0 UID: 0 PID: 5312 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 94.880787][ T5312] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 94.883974][ T5312] Call Trace:
[ 94.885064][ T5312]
[ 94.886143][ T5312] vpanic+0x56d/0xa60
[ 94.887904][ T5312] ? __pfx__printk+0x10/0x10
[ 94.889669][ T5312] ? __pfx_vpanic+0x10/0x10
[ 94.891405][ T5312] ? is_bpf_text_address+0x292/0x2b0
[ 94.893460][ T5312] ? is_bpf_text_address+0x26/0x2b0
[ 94.895392][ T5312] panic+0xc5/0xd0
[ 94.896899][ T5312] ? __pfx_panic+0x10/0x10
[ 94.898577][ T5312] __warn+0x315/0x4c0
[ 94.900080][ T5312] ? dlm_lowcomms_close+0x12d/0x440
[ 94.901774][ T5312] ? dlm_lowcomms_close+0x12d/0x440
[ 94.903464][ T5312] __report_bug+0x276/0x570
[ 94.905079][ T5312] ? check_path+0x21/0x40
[ 94.906762][ T5312] ? dlm_lowcomms_close+0x12d/0x440
[ 94.908771][ T5312] ? __pfx___report_bug+0x10/0x10
[ 94.910554][ T5312] ? lockdep_unlock+0x5c/0xd0
[ 94.912388][ T5312] ? __lock_acquire+0x1511/0x2de0
[ 94.914681][ T5312] ? dlm_lowcomms_close+0x12d/0x440
[ 94.916675][ T5312] report_bug+0x16b/0x220
[ 94.918451][ T5312] ? dlm_lowcomms_close+0x12d/0x440
[ 94.921617][ T5312] ? dlm_lowcomms_close+0x12f/0x440
[ 94.923435][ T5312] handle_bug+0x9c/0x200
[ 94.924803][ T5312] exc_invalid_op+0x1a/0x50
[ 94.926663][ T5312] asm_exc_invalid_op+0x1a/0x20
[ 94.928858][ T5312] RIP: 0010:dlm_lowcomms_close+0x12d/0x440
[ 94.930908][ T5312] Code: 99 5e 9f 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 52 fd 10 01 eb a2 e8 7b 5e 9f 00 eb 05 e8 74 5e 9f 00 90 <0f> 0b 90 44 89 f7 e8 c8 61 5a 01 b8 fe ff ff ff 48 83 c4 20 5b 41
[ 94.937845][ T5312] RSP: 0000:ffffc9000f1f7c40 EFLAGS: 00010287
[ 94.940473][ T5312] RAX: ffffffff81287d45 RBX: 0000000000000001 RCX: 0000000000100000
[ 94.943759][ T5312] RDX: ffffc9000f689000 RSI: 0000000000000802 RDI: 0000000000000803
[ 94.946377][ T5312] RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff96bafad0
[ 94.949649][ T5312] R10: 00000000b8a5a85b R11: 00000000296d98fe R12: 0000000000000000
[ 94.952490][ T5312] R13: ffffffff81287c78 R14: 0000000000000000 R15: 0000000000000000
[ 94.955797][ T5312] ? dlm_lowcomms_close+0x58/0x440
[ 94.958112][ T5312] ? dlm_lowcomms_close+0x125/0x440
[ 94.960301][ T5312] ? dlm_midcomms_close+0x3a9/0x4c0
[ 94.962418][ T5312] ? dlm_midcomms_close+0x4b/0x4c0
[ 94.964640][ T5312] drop_comm+0x61/0x190
[ 94.966759][ T5312] ? configfs_rmdir+0x850/0x950
[ 94.969356][ T5312] ? __pfx_drop_comm+0x10/0x10
[ 94.971434][ T5312] configfs_rmdir+0x85f/0x950
[ 94.973457][ T5312] vfs_rmdir+0x3e6/0x6a0
[ 94.975287][ T5312] ? bpf_lsm_path_rmdir+0x9/0x20
[ 94.977983][ T5312] filename_rmdir+0x292/0x520
[ 94.980980][ T5312] ? __pfx_filename_rmdir+0x10/0x10
[ 94.984329][ T5312] ? do_getname+0x151/0x250
[ 94.987117][ T5312] __se_sys_rmdir+0x2e/0x140
[ 94.990194][ T5312] do_syscall_64+0x166/0x520
[ 94.992959][ T5312] ? trace_irq_disable+0x3b/0x140
[ 94.996288][ T5312] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.999852][ T5312] ? clear_bhb_loop+0x70/0xc0
[ 95.003240][ T5312] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.007125][ T5312] RIP: 0033:0x7f65c539e159
[ 95.010103][ T5312] 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
[ 95.021997][ T5312] RSP: 002b:00007f65c6310fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 95.027042][ T5312] RAX: ffffffffffffffda RBX: 00007f65c5625fa0 RCX: 00007f65c539e159
[ 95.031813][ T5312] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000140
[ 95.036638][ T5312] RBP: 00007f65c543503b R08: 0000000000000000 R09: 0000000000000000
[ 95.041361][ T5312] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 95.045773][ T5312] R13: 00007f65c5626038 R14: 00007f65c5625fa0 R15: 00007fff8bcfa2a8
[ 95.050625][ T5312]
[ 95.054363][ T5312] Kernel Offset: disabled
[ 95.057250][ T5312] Rebooting in 86400 seconds..