program: r0 = openat$comedi(0xffffff9c, &(0x7f0000000040)='/dev/comedi1\x00', 0x2180, 0x0) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f0000000080)={'pcl818\x00', [0xfffffffd, 0x80008000, 0x1, 0xa, 0x0, 0x0, 0x1, 0xf, 0xffe, 0x1, 0x8, 0x1, 0x40001006, 0x6, 0xffff, 0x6, 0xffffffa7, 0x40000009, 0xfffffffd, 0x5, 0x3ff, 0x10000, 0x80800, 0xe2df, 0x9, 0x8, 0x1, 0x3, 0x7, 0x5, 0x5]}) [ 85.115830][ T4685] Bluetooth: hci0: command tx timeout [ 85.157161][ T5348] comedi comedi1: pcl818: I/O port conflict (0xfffffffffffffffd,16) [ 85.164870][ T5348] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN NOPTI [ 85.174823][ T5348] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 85.178419][ T5348] CPU: 0 UID: 0 PID: 5348 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.182210][ T5348] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.186871][ T5348] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 85.189359][ T5348] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 f9 1d 70 f9 48 8b 03 48 89 04 24 49 83 c4 28 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 d8 1d 70 f9 4d 8b 24 24 48 83 c3 [ 85.197539][ T5348] RSP: 0018:ffffc9000d5d79d8 EFLAGS: 00010206 [ 85.200137][ T5348] RAX: 0000000000000005 RBX: ffff888042809980 RCX: 0000000000100000 [ 85.203513][ T5348] RDX: ffffc90020001000 RSI: 00000000000009e6 RDI: 00000000000009e7 [ 85.206984][ T5348] RBP: 0000000000000001 R08: ffff88803e6c092f R09: 1ffff11007cd8125 [ 85.210573][ T5348] R10: dffffc0000000000 R11: ffffffff88b898f0 R12: 0000000000000028 [ 85.213975][ T5348] R13: dffffc0000000000 R14: ffff88803e6c0800 R15: dffffc0000000000 [ 85.217485][ T5348] FS: 00007f5b726236c0(0000) GS:ffff88808d69f000(0000) knlGS:0000000000000000 [ 85.221327][ T5348] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.225129][ T5348] CR2: 00007f5b719d9028 CR3: 0000000011309000 CR4: 0000000000352ef0 [ 85.229966][ T5348] Call Trace: [ 85.232022][ T5348] [ 85.233618][ T5348] pcl818_detach+0x66/0xd0 [ 85.235696][ T5348] comedi_device_detach_locked+0x178/0x750 [ 85.238218][ T5348] comedi_device_attach+0x5d4/0x720 [ 85.240427][ T5348] comedi_unlocked_ioctl+0x5ff/0x1020 [ 85.242735][ T5348] ? kasan_quarantine_put+0xdd/0x220 [ 85.245071][ T5348] ? lockdep_hardirqs_on+0x98/0x140 [ 85.247346][ T5348] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 85.249691][ T5348] ? do_futex+0x333/0x420 [ 85.251613][ T5348] ? __fget_files+0x2a/0x420 [ 85.253614][ T5348] ? __fget_files+0x3a0/0x420 [ 85.255685][ T5348] ? __fget_files+0x2a/0x420 [ 85.257834][ T5348] ? bpf_lsm_file_ioctl+0x9/0x20 [ 85.260049][ T5348] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 85.262659][ T5348] __se_sys_ioctl+0xfc/0x170 [ 85.264721][ T5348] do_syscall_64+0xfa/0xf80 [ 85.266866][ T5348] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.269524][ T5348] ? clear_bhb_loop+0x60/0xb0 [ 85.271638][ T5348] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.274279][ T5348] RIP: 0033:0x7f5b7178f7c9 [ 85.276186][ T5348] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 [ 85.283997][ T5348] RSP: 002b:00007f5b72623038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 85.287438][ T5348] RAX: ffffffffffffffda RBX: 00007f5b719e5fa0 RCX: 00007f5b7178f7c9 [ 85.290817][ T5348] RDX: 0000200000000080 RSI: 0000000040946400 RDI: 0000000000000003 [ 85.294289][ T5348] RBP: 00007f5b71813f91 R08: 0000000000000000 R09: 0000000000000000 [ 85.297576][ T5348] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.300949][ T5348] R13: 00007f5b719e6038 R14: 00007f5b719e5fa0 R15: 00007ffefc488fc8 [ 85.304477][ T5348] [ 85.305910][ T5348] Modules linked in: [ 85.308297][ T5348] ---[ end trace 0000000000000000 ]--- [ 85.325088][ T5348] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 85.327657][ T5348] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 f9 1d 70 f9 48 8b 03 48 89 04 24 49 83 c4 28 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 d8 1d 70 f9 4d 8b 24 24 48 83 c3 [ 85.337401][ T5348] RSP: 0018:ffffc9000d5d79d8 EFLAGS: 00010206 [ 85.341166][ T5348] RAX: 0000000000000005 RBX: ffff888042809980 RCX: 0000000000100000 [ 85.344620][ T5348] RDX: ffffc90020001000 RSI: 00000000000009e6 RDI: 00000000000009e7 [ 85.348110][ T5348] RBP: 0000000000000001 R08: ffff88803e6c092f R09: 1ffff11007cd8125 [ 85.352021][ T5348] R10: dffffc0000000000 R11: ffffffff88b898f0 R12: 0000000000000028 [ 85.355671][ T5348] R13: dffffc0000000000 R14: ffff88803e6c0800 R15: dffffc0000000000 [ 85.360554][ T5348] FS: 00007f5b726236c0(0000) GS:ffff88808d69f000(0000) knlGS:0000000000000000 [ 85.365527][ T5348] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.368912][ T5348] CR2: 00007f5b719bb558 CR3: 0000000011309000 CR4: 0000000000352ef0 [ 85.376899][ T5348] Kernel panic - not syncing: Fatal exception [ 85.379971][ T5348] Kernel Offset: disabled [ 85.381956][ T5348] Rebooting in 86400 seconds..