program:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff) (async, rerun: 64)
mount(0x0, &(0x7f0000000000)='./config\x00', &(0x7f0000000040)='configfs\x00', 0x0, 0x0) (rerun: 64)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./config/dlm\x00', 0x1ff) (async)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./config/dlm/cluster1\x00', 0x1ff) (async)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster1/comms/1\x00', 0x1ff) (async)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./debug/dlm/comms/1/rawmsg\x00', 0x52880, 0x159)
write(r0, &(0x7f0000000200)='0200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000', 0x80) (async)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./debug\x00', 0x1ff) (async)
mount(0x0, &(0x7f0000000300)='./debug\x00', &(0x7f0000000340)='debugfs\x00', 0x0, 0x0) (async, rerun: 64)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dlm/comms/1/rawmsg\x00', 0x1, 0x0) (rerun: 64)
write(r1, &(0x7f0000000400)='\x00'/16, 0x10) (async, rerun: 64)
rmdir(&(0x7f0000000140)='./config/dlm/cluster1/comms/1\x00') (rerun: 64)
[ 94.712933][ T47] Bluetooth: hci0: command tx timeout
[ 94.979248][ T5318] dlm: closing connection to node 1
[ 94.980500][ T5318] ------------[ cut here ]------------
[ 94.980509][ T5318] !con
[ 94.980524][ T5318] WARNING: fs/dlm/lowcomms.c:1455 at dlm_lowcomms_close+0x12d/0x440, CPU#0: syz.0.0/5318
[ 94.992030][ T5318] Modules linked in:
[ 94.994031][ T5318] CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 94.998092][ T5318] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 95.002845][ T5318] RIP: 0010:dlm_lowcomms_close+0x12d/0x440
[ 95.005258][ T5318] Code: 19 7f 9f 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 f2 21 11 01 eb a2 e8 fb 7e 9f 00 eb 05 e8 f4 7e 9f 00 90 <0f> 0b 90 44 89 f7 e8 88 8d 5a 01 b8 fe ff ff ff 48 83 c4 20 5b 41
[ 95.013369][ T5318] RSP: 0018:ffffc9000de7fc40 EFLAGS: 00010293
[ 95.016162][ T5318] RAX: ffffffff81287d45 RBX: 0000000000000001 RCX: ffff888035ae0000
[ 95.019941][ T5318] RDX: 0000000000000000 RSI: ffffffff8e6a37d0 RDI: ffffffff8c6dcd80
[ 95.023782][ T5318] RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff96bc1f58
[ 95.027484][ T5318] R10: 00000000a35ff826 R11: 0000000010da07a2 R12: 0000000000000000
[ 95.031210][ T5318] R13: ffffffff81287c78 R14: 0000000000000000 R15: 0000000000000000
[ 95.034466][ T5318] FS: 00007fbc22e236c0(0000) GS:ffff88808c2bc000(0000) knlGS:0000000000000000
[ 95.038497][ T5318] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 95.041539][ T5318] CR2: 00007fbc22de0fe8 CR3: 0000000013941000 CR4: 0000000000352ef0
[ 95.044819][ T5318] Call Trace:
[ 95.046270][ T5318]
[ 95.047677][ T5318] ? dlm_midcomms_close+0x3a9/0x4c0
[ 95.050160][ T5318] ? dlm_midcomms_close+0x4b/0x4c0
[ 95.052395][ T5318] drop_comm+0x61/0x190
[ 95.054237][ T5318] ? configfs_rmdir+0x850/0x950
[ 95.056216][ T5318] ? __pfx_drop_comm+0x10/0x10
[ 95.058368][ T5318] configfs_rmdir+0x85f/0x950
[ 95.061059][ T5318] vfs_rmdir+0x3e6/0x6a0
[ 95.062933][ T5318] ? bpf_lsm_path_rmdir+0x9/0x20
[ 95.065015][ T5318] filename_rmdir+0x292/0x520
[ 95.067018][ T5318] ? __pfx_filename_rmdir+0x10/0x10
[ 95.069203][ T5318] ? do_getname+0x151/0x250
[ 95.071202][ T5318] __se_sys_rmdir+0x2e/0x140
[ 95.073230][ T5318] do_syscall_64+0x166/0x520
[ 95.075331][ T5318] ? trace_irq_disable+0x3b/0x140
[ 95.077660][ T5318] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.080548][ T5318] ? clear_bhb_loop+0x70/0xc0
[ 95.082608][ T5318] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.085126][ T5318] RIP: 0033:0x7fbc21f9e159
[ 95.087195][ T5318] 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
[ 95.095181][ T5318] RSP: 002b:00007fbc22e22fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 95.099046][ T5318] RAX: ffffffffffffffda RBX: 00007fbc22226090 RCX: 00007fbc21f9e159
[ 95.102770][ T5318] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000140
[ 95.106291][ T5318] RBP: 00007fbc2203506b R08: 0000000000000000 R09: 0000000000000000
[ 95.109904][ T5318] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 95.113400][ T5318] R13: 00007fbc22226128 R14: 00007fbc22226090 R15: 00007fff74163d98
[ 95.116995][ T5318]
[ 95.118520][ T5318] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 95.121814][ T5318] CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 95.125565][ T5318] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 95.129919][ T5318] Call Trace:
[ 95.131474][ T5318]
[ 95.132769][ T5318] vpanic+0x56d/0xa60
[ 95.134532][ T5318] ? __pfx__printk+0x10/0x10
[ 95.136499][ T5318] ? __pfx_vpanic+0x10/0x10
[ 95.138830][ T5318] ? is_bpf_text_address+0x292/0x2b0
[ 95.141797][ T5318] ? is_bpf_text_address+0x26/0x2b0
[ 95.144490][ T5318] panic+0xc5/0xd0
[ 95.146186][ T5318] ? __pfx_panic+0x10/0x10
[ 95.148133][ T5318] __warn+0x315/0x4c0
[ 95.149824][ T5318] ? dlm_lowcomms_close+0x12d/0x440
[ 95.152026][ T5318] ? dlm_lowcomms_close+0x12d/0x440
[ 95.154254][ T5318] __report_bug+0x276/0x570
[ 95.156384][ T5318] ? check_path+0x21/0x40
[ 95.158222][ T5318] ? dlm_lowcomms_close+0x12d/0x440
[ 95.160378][ T5318] ? __pfx___report_bug+0x10/0x10
[ 95.162564][ T5318] ? lockdep_unlock+0x5c/0xd0
[ 95.164634][ T5318] ? __lock_acquire+0x1511/0x2de0
[ 95.167027][ T5318] ? dlm_lowcomms_close+0x12d/0x440
[ 95.169294][ T5318] report_bug+0x16b/0x220
[ 95.171266][ T5318] ? dlm_lowcomms_close+0x12d/0x440
[ 95.173359][ T5318] ? dlm_lowcomms_close+0x12f/0x440
[ 95.175568][ T5318] handle_bug+0x9c/0x200
[ 95.177571][ T5318] exc_invalid_op+0x1a/0x50
[ 95.179661][ T5318] asm_exc_invalid_op+0x1a/0x20
[ 95.181734][ T5318] RIP: 0010:dlm_lowcomms_close+0x12d/0x440
[ 95.184395][ T5318] Code: 19 7f 9f 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 f2 21 11 01 eb a2 e8 fb 7e 9f 00 eb 05 e8 f4 7e 9f 00 90 <0f> 0b 90 44 89 f7 e8 88 8d 5a 01 b8 fe ff ff ff 48 83 c4 20 5b 41
[ 95.193244][ T5318] RSP: 0018:ffffc9000de7fc40 EFLAGS: 00010293
[ 95.196015][ T5318] RAX: ffffffff81287d45 RBX: 0000000000000001 RCX: ffff888035ae0000
[ 95.199505][ T5318] RDX: 0000000000000000 RSI: ffffffff8e6a37d0 RDI: ffffffff8c6dcd80
[ 95.202946][ T5318] RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff96bc1f58
[ 95.206465][ T5318] R10: 00000000a35ff826 R11: 0000000010da07a2 R12: 0000000000000000
[ 95.210115][ T5318] R13: ffffffff81287c78 R14: 0000000000000000 R15: 0000000000000000
[ 95.213955][ T5318] ? dlm_lowcomms_close+0x58/0x440
[ 95.216377][ T5318] ? dlm_lowcomms_close+0x125/0x440
[ 95.218836][ T5318] ? dlm_midcomms_close+0x3a9/0x4c0
[ 95.221229][ T5318] ? dlm_midcomms_close+0x4b/0x4c0
[ 95.223656][ T5318] drop_comm+0x61/0x190
[ 95.225605][ T5318] ? configfs_rmdir+0x850/0x950
[ 95.227863][ T5318] ? __pfx_drop_comm+0x10/0x10
[ 95.230166][ T5318] configfs_rmdir+0x85f/0x950
[ 95.232322][ T5318] vfs_rmdir+0x3e6/0x6a0
[ 95.234176][ T5318] ? bpf_lsm_path_rmdir+0x9/0x20
[ 95.236458][ T5318] filename_rmdir+0x292/0x520
[ 95.238752][ T5318] ? __pfx_filename_rmdir+0x10/0x10
[ 95.241096][ T5318] ? do_getname+0x151/0x250
[ 95.243165][ T5318] __se_sys_rmdir+0x2e/0x140
[ 95.245131][ T5318] do_syscall_64+0x166/0x520
[ 95.247321][ T5318] ? trace_irq_disable+0x3b/0x140
[ 95.249677][ T5318] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.252468][ T5318] ? clear_bhb_loop+0x70/0xc0
[ 95.254638][ T5318] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.257347][ T5318] RIP: 0033:0x7fbc21f9e159
[ 95.259450][ T5318] 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
[ 95.268066][ T5318] RSP: 002b:00007fbc22e22fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 95.271757][ T5318] RAX: ffffffffffffffda RBX: 00007fbc22226090 RCX: 00007fbc21f9e159
[ 95.275292][ T5318] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000140
[ 95.280833][ T5318] RBP: 00007fbc2203506b R08: 0000000000000000 R09: 0000000000000000
[ 95.284570][ T5318] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 95.288111][ T5318] R13: 00007fbc22226128 R14: 00007fbc22226090 R15: 00007fff74163d98
[ 95.291554][ T5318]
[ 95.293392][ T5318] Kernel Offset: disabled
[ 95.295356][ T5318] Rebooting in 86400 seconds..