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) (async)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./config/dlm/cluster1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster1/comms/1\x00', 0x1ff) (async)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster1/comms/1\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./config/dlm/cluster1/comms/1/addr\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)="3032303030303030303030303030303030303030543030303030303030303030303030303030303030303030303030303030303030303030303030303030303006b3303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030c88a88c3303030303030303030303030303030304430303030303030303030303030303030303030303030303030303030303030303030303031303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030", 0x100)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./debug\x00', 0x1ff) (async)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./debug\x00', 0x1ff)
ioctl$FS_IOC_GETFSSYSFSPATH(r0, 0x80811501, &(0x7f0000000440)={0x80})
mount(0x0, &(0x7f0000000300)='./debug\x00', &(0x7f0000000340)='debugfs\x00', 0x0, 0x0) (async)
mount(0x0, &(0x7f0000000300)='./debug\x00', &(0x7f0000000340)='debugfs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./debug\x00', 0x1, 0x0)
write(r1, &(0x7f0000000400)='\x00'/16, 0x10)
rmdir(&(0x7f0000000140)='./config/dlm/cluster1/comms/1\x00')
[ 102.176053][ T4647] Bluetooth: hci0: command tx timeout
[ 102.385077][ T5327] dlm: closing connection to node 1
[ 102.385752][ T5327] ------------[ cut here ]------------
[ 102.385760][ T5327] !con
[ 102.385766][ T5327] WARNING: fs/dlm/lowcomms.c:1455 at dlm_lowcomms_close+0x12d/0x440, CPU#0: syz.0.0/5327
[ 102.399213][ T5327] Modules linked in:
[ 102.401008][ T5327] CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 102.405371][ T5327] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 102.409529][ T5327] RIP: 0010:dlm_lowcomms_close+0x12d/0x440
[ 102.412051][ T5327] Code: 79 a2 9f 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 d2 43 11 01 eb a2 e8 5b a2 9f 00 eb 05 e8 54 a2 9f 00 90 <0f> 0b 90 44 89 f7 e8 98 af 5a 01 b8 fe ff ff ff 48 83 c4 20 5b 41
[ 102.419472][ T5327] RSP: 0018:ffffc9000e0ffc40 EFLAGS: 00010293
[ 102.422324][ T5327] RAX: ffffffff81287d45 RBX: 0000000000000001 RCX: ffff88801fb4cb00
[ 102.425691][ T5327] RDX: 0000000000000000 RSI: ffffffff8e6a3541 RDI: ffffffff8c6dcd80
[ 102.429009][ T5327] RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff96bc0400
[ 102.432316][ T5327] R10: 000000005cbd52e2 R11: 00000000802cb0cd R12: 0000000000000000
[ 102.435877][ T5327] R13: ffffffff81287c78 R14: 0000000000000000 R15: 0000000000000000
[ 102.439373][ T5327] FS: 00007f74800fb6c0(0000) GS:ffff88808c2bc000(0000) knlGS:0000000000000000
[ 102.443163][ T5327] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 102.445872][ T5327] CR2: 00007ff4ea5532b0 CR3: 0000000040874000 CR4: 0000000000352ef0
[ 102.449444][ T5327] Call Trace:
[ 102.451110][ T5327]
[ 102.452462][ T5327] ? dlm_midcomms_close+0x3a9/0x4c0
[ 102.454764][ T5327] ? dlm_midcomms_close+0x4b/0x4c0
[ 102.457067][ T5327] drop_comm+0x61/0x190
[ 102.458950][ T5327] ? configfs_rmdir+0x850/0x950
[ 102.461162][ T5327] ? __pfx_drop_comm+0x10/0x10
[ 102.463228][ T5327] configfs_rmdir+0x85f/0x950
[ 102.465333][ T5327] vfs_rmdir+0x3e6/0x6a0
[ 102.467135][ T5327] ? bpf_lsm_path_rmdir+0x9/0x20
[ 102.469323][ T5327] filename_rmdir+0x292/0x520
[ 102.471709][ T5327] ? __pfx_filename_rmdir+0x10/0x10
[ 102.473976][ T5327] ? do_getname+0x151/0x250
[ 102.475842][ T5327] __se_sys_rmdir+0x2e/0x140
[ 102.478162][ T5327] do_syscall_64+0x166/0x520
[ 102.480592][ T5327] ? trace_irq_disable+0x3b/0x140
[ 102.482870][ T5327] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 102.485419][ T5327] ? clear_bhb_loop+0x70/0xc0
[ 102.487352][ T5327] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 102.489936][ T5327] RIP: 0033:0x7f747f19e159
[ 102.491637][ T5327] 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
[ 102.498821][ T5327] RSP: 002b:00007f74800fafe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 102.501974][ T5327] RAX: ffffffffffffffda RBX: 00007f747f425fa0 RCX: 00007f747f19e159
[ 102.505099][ T5327] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000140
[ 102.507999][ T5327] RBP: 00007f747f23506b R08: 0000000000000000 R09: 0000000000000000
[ 102.511634][ T5327] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 102.515120][ T5327] R13: 00007f747f426038 R14: 00007f747f425fa0 R15: 00007ffd8cb1cc18
[ 102.518599][ T5327]
[ 102.520276][ T5327] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 102.523420][ T5327] CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 102.527176][ T5327] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 102.531448][ T5327] Call Trace:
[ 102.532912][ T5327]
[ 102.534191][ T5327] vpanic+0x56d/0xa60
[ 102.535960][ T5327] ? __pfx__printk+0x10/0x10
[ 102.537984][ T5327] ? __pfx_vpanic+0x10/0x10
[ 102.540025][ T5327] ? is_bpf_text_address+0x292/0x2b0
[ 102.542541][ T5327] ? is_bpf_text_address+0x26/0x2b0
[ 102.544836][ T5327] panic+0xc5/0xd0
[ 102.546506][ T5327] ? __pfx_panic+0x10/0x10
[ 102.548456][ T5327] __warn+0x315/0x4c0
[ 102.550242][ T5327] ? dlm_lowcomms_close+0x12d/0x440
[ 102.552446][ T5327] ? dlm_lowcomms_close+0x12d/0x440
[ 102.554729][ T5327] __report_bug+0x276/0x570
[ 102.556739][ T5327] ? check_path+0x21/0x40
[ 102.558659][ T5327] ? dlm_lowcomms_close+0x12d/0x440
[ 102.560984][ T5327] ? __pfx___report_bug+0x10/0x10
[ 102.563210][ T5327] ? lockdep_unlock+0x5c/0xd0
[ 102.565330][ T5327] ? __lock_acquire+0x1511/0x2de0
[ 102.567496][ T5327] ? dlm_lowcomms_close+0x12d/0x440
[ 102.569678][ T5327] report_bug+0x16b/0x220
[ 102.571417][ T5327] ? dlm_lowcomms_close+0x12d/0x440
[ 102.573686][ T5327] ? dlm_lowcomms_close+0x12f/0x440
[ 102.575940][ T5327] handle_bug+0x9c/0x200
[ 102.577925][ T5327] exc_invalid_op+0x1a/0x50
[ 102.580222][ T5327] asm_exc_invalid_op+0x1a/0x20
[ 102.582482][ T5327] RIP: 0010:dlm_lowcomms_close+0x12d/0x440
[ 102.585114][ T5327] Code: 79 a2 9f 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 d2 43 11 01 eb a2 e8 5b a2 9f 00 eb 05 e8 54 a2 9f 00 90 <0f> 0b 90 44 89 f7 e8 98 af 5a 01 b8 fe ff ff ff 48 83 c4 20 5b 41
[ 102.592830][ T5327] RSP: 0018:ffffc9000e0ffc40 EFLAGS: 00010293
[ 102.595446][ T5327] RAX: ffffffff81287d45 RBX: 0000000000000001 RCX: ffff88801fb4cb00
[ 102.599029][ T5327] RDX: 0000000000000000 RSI: ffffffff8e6a3541 RDI: ffffffff8c6dcd80
[ 102.602306][ T5327] RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff96bc0400
[ 102.605846][ T5327] R10: 000000005cbd52e2 R11: 00000000802cb0cd R12: 0000000000000000
[ 102.609433][ T5327] R13: ffffffff81287c78 R14: 0000000000000000 R15: 0000000000000000
[ 102.613164][ T5327] ? dlm_lowcomms_close+0x58/0x440
[ 102.615380][ T5327] ? dlm_lowcomms_close+0x125/0x440
[ 102.617712][ T5327] ? dlm_midcomms_close+0x3a9/0x4c0
[ 102.620104][ T5327] ? dlm_midcomms_close+0x4b/0x4c0
[ 102.622397][ T5327] drop_comm+0x61/0x190
[ 102.624651][ T5327] ? configfs_rmdir+0x850/0x950
[ 102.626748][ T5327] ? __pfx_drop_comm+0x10/0x10
[ 102.628462][ T5327] configfs_rmdir+0x85f/0x950
[ 102.630595][ T5327] vfs_rmdir+0x3e6/0x6a0
[ 102.632397][ T5327] ? bpf_lsm_path_rmdir+0x9/0x20
[ 102.634516][ T5327] filename_rmdir+0x292/0x520
[ 102.636340][ T5327] ? __pfx_filename_rmdir+0x10/0x10
[ 102.638352][ T5327] ? do_getname+0x151/0x250
[ 102.640291][ T5327] __se_sys_rmdir+0x2e/0x140
[ 102.642148][ T5327] do_syscall_64+0x166/0x520
[ 102.644046][ T5327] ? trace_irq_disable+0x3b/0x140
[ 102.646007][ T5327] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 102.648330][ T5327] ? clear_bhb_loop+0x70/0xc0
[ 102.650226][ T5327] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 102.652483][ T5327] RIP: 0033:0x7f747f19e159
[ 102.654294][ T5327] 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
[ 102.661695][ T5327] RSP: 002b:00007f74800fafe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 102.664956][ T5327] RAX: ffffffffffffffda RBX: 00007f747f425fa0 RCX: 00007f747f19e159
[ 102.667858][ T5327] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000140
[ 102.670924][ T5327] RBP: 00007f747f23506b R08: 0000000000000000 R09: 0000000000000000
[ 102.673905][ T5327] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 102.676908][ T5327] R13: 00007f747f426038 R14: 00007f747f425fa0 R15: 00007ffd8cb1cc18
[ 102.679831][ T5327]
[ 102.681398][ T5327] Kernel Offset: disabled
[ 102.683084][ T5327] Rebooting in 86400 seconds..