program: r0 = openat$comedi(0xffffff9c, &(0x7f0000000040)='/dev/comedi1\x00', 0x2180, 0x0) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f0000000080)={'pcl818\x00', [0x3b, 0x2, 0x7, 0xc3, 0x8001, 0x3, 0x5, 0x8, 0x2, 0xffffffff, 0xff, 0x6, 0x2, 0x0, 0x3, 0x5, 0x9, 0x2, 0x9, 0x4, 0x6, 0x8, 0x80, 0x3, 0x8, 0x15, 0x5, 0x8, 0x6, 0xca, 0x7]}) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f0000000140)={'pcl812\x00', [0x2f00, 0x8, 0xd09a, 0xffffffff, 0x5, 0xfffffffe, 0x20000008, 0x6, 0x8, 0x1, 0xc, 0x1, 0x4, 0x4, 0xffff, 0x6, 0x10000005, 0x40000009, 0x833, 0x30000, 0x10000, 0x9, 0xc25, 0xe2df, 0x2, 0x1, 0x1ff, 0x3, 0x4, 0x5, 0x70d]}) [ 85.769549][ T4681] Bluetooth: hci0: command tx timeout [ 85.919243][ T5342] comedi comedi1: pcl818: I/O port conflict (0x3b,16) [ 85.923811][ T5342] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN NOPTI [ 85.928903][ T5342] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 85.932534][ T5342] CPU: 0 UID: 0 PID: 5342 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.936406][ T5342] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.940948][ T5342] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 85.943373][ T5342] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 19 ba 6c 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 f8 b9 6c f9 4d 8b 24 24 48 83 c3 [ 85.951720][ T5342] RSP: 0018:ffffc9000d6d79d8 EFLAGS: 00010206 [ 85.954330][ T5342] RAX: 0000000000000005 RBX: ffff888019f84980 RCX: 0000000000100000 [ 85.957590][ T5342] RDX: ffffc9000f2d1000 RSI: 000000000000094a RDI: 000000000000094b [ 85.960827][ T5342] RBP: 0000000000000001 R08: ffff88803e85892f R09: 1ffff11007d0b125 [ 85.964154][ T5342] R10: dffffc0000000000 R11: ffffffff88bbfdf0 R12: 0000000000000028 [ 85.967505][ T5342] R13: dffffc0000000000 R14: ffff88803e858800 R15: dffffc0000000000 [ 85.970835][ T5342] FS: 00007f1f0209f6c0(0000) GS:ffff88808d683000(0000) knlGS:0000000000000000 [ 85.974739][ T5342] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.977964][ T5342] CR2: 00007f1f013d90e8 CR3: 000000001f5c2000 CR4: 0000000000352ef0 [ 85.981410][ T5342] Call Trace: [ 85.982921][ T5342] [ 85.984245][ T5342] pcl818_detach+0x66/0xd0 [ 85.986189][ T5342] comedi_device_detach_locked+0x178/0x750 [ 85.988722][ T5342] comedi_device_attach+0x5d4/0x720 [ 85.990929][ T5342] comedi_unlocked_ioctl+0x5ff/0x1020 [ 85.993195][ T5342] ? kasan_quarantine_put+0xdd/0x220 [ 85.995502][ T5342] ? lockdep_hardirqs_on+0x98/0x140 [ 85.997725][ T5342] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 86.000261][ T5342] ? do_futex+0x395/0x420 [ 86.002193][ T5342] ? __fget_files+0x2a/0x420 [ 86.004208][ T5342] ? __fget_files+0x3a0/0x420 [ 86.006287][ T5342] ? __fget_files+0x2a/0x420 [ 86.008336][ T5342] ? bpf_lsm_file_ioctl+0x9/0x20 [ 86.010519][ T5342] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 86.013062][ T5342] __se_sys_ioctl+0xfc/0x170 [ 86.015079][ T5342] do_syscall_64+0xfa/0xf80 [ 86.016987][ T5342] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.019662][ T5342] ? clear_bhb_loop+0x60/0xb0 [ 86.021742][ T5342] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.024086][ T5342] RIP: 0033:0x7f1f0118f7c9 [ 86.025794][ T5342] 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 [ 86.033568][ T5342] RSP: 002b:00007f1f0209f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 86.037039][ T5342] RAX: ffffffffffffffda RBX: 00007f1f013e5fa0 RCX: 00007f1f0118f7c9 [ 86.040176][ T5342] RDX: 0000200000000080 RSI: 0000000040946400 RDI: 0000000000000003 [ 86.043211][ T5342] RBP: 00007f1f01213f91 R08: 0000000000000000 R09: 0000000000000000 [ 86.046621][ T5342] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 86.049833][ T5342] R13: 00007f1f013e6038 R14: 00007f1f013e5fa0 R15: 00007ffd9925b6a8 [ 86.053134][ T5342] [ 86.054432][ T5342] Modules linked in: [ 86.057042][ T5342] ---[ end trace 0000000000000000 ]--- [ 86.092894][ T5342] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 86.096579][ T5342] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 19 ba 6c 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 f8 b9 6c f9 4d 8b 24 24 48 83 c3 [ 86.120536][ T5342] RSP: 0018:ffffc9000d6d79d8 EFLAGS: 00010206 [ 86.124171][ T5342] RAX: 0000000000000005 RBX: ffff888019f84980 RCX: 0000000000100000 [ 86.128382][ T5342] RDX: ffffc9000f2d1000 RSI: 000000000000094a RDI: 000000000000094b [ 86.131760][ T5342] RBP: 0000000000000001 R08: ffff88803e85892f R09: 1ffff11007d0b125 [ 86.135577][ T5342] R10: dffffc0000000000 R11: ffffffff88bbfdf0 R12: 0000000000000028 [ 86.138853][ T5342] R13: dffffc0000000000 R14: ffff88803e858800 R15: dffffc0000000000 [ 86.142666][ T5342] FS: 00007f1f0209f6c0(0000) GS:ffff88808d683000(0000) knlGS:0000000000000000 [ 86.146976][ T5342] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.149661][ T5342] CR2: 00007f1f0207dfc8 CR3: 000000001f5c2000 CR4: 0000000000352ef0 [ 86.153207][ T5342] Kernel panic - not syncing: Fatal exception [ 86.156270][ T5342] Kernel Offset: disabled [ 86.158177][ T5342] Rebooting in 86400 seconds..