program: r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'pcl818\x00', [0x6, 0x2, 0x10000, 0x4, 0x5, 0xcc7, 0x8, 0x8d, 0xa, 0x0, 0x2, 0x1, 0x1, 0x1, 0x6, 0x101, 0x0, 0x1a449, 0x3, 0x40000003, 0x89, 0xcaa7, 0x0, 0x20001e5c, 0xb, 0xffc00000, 0x7d4, 0x8, 0x6, 0xf7ffffff, 0xfffffff8]}) [ 85.888173][ T5351] comedi comedi3: pcl818: I/O port conflict (0x6,16) [ 85.891026][ T5351] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN NOPTI [ 85.895685][ T5351] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 85.899210][ T5351] CPU: 0 UID: 0 PID: 5351 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.902914][ T5351] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.907548][ T5351] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 85.910050][ T5351] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 69 2c 71 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 48 2c 71 f9 4d 8b 24 24 48 83 c3 [ 85.918192][ T5351] RSP: 0018:ffffc9000d3679d8 EFLAGS: 00010206 [ 85.920797][ T5351] RAX: 0000000000000005 RBX: ffff888011986700 RCX: 0000000000100000 [ 85.924767][ T5351] RDX: ffffc9000f652000 RSI: 000000000000092b RDI: 000000000000092c [ 85.928170][ T5351] RBP: 0000000000000001 R08: ffff88803e52792f R09: 1ffff11007ca4f25 [ 85.931541][ T5351] R10: dffffc0000000000 R11: ffffffff88b6eea0 R12: 0000000000000028 [ 85.936036][ T5351] R13: dffffc0000000000 R14: ffff88803e527800 R15: dffffc0000000000 [ 85.943936][ T5351] FS: 00007fcbe5cfd6c0(0000) GS:ffff88808d6b5000(0000) knlGS:0000000000000000 [ 85.948107][ T5351] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.950836][ T5351] CR2: 00007fcbe4fdc888 CR3: 0000000010ed8000 CR4: 0000000000352ef0 [ 85.954265][ T5351] Call Trace: [ 85.955774][ T5351] [ 85.957075][ T5351] pcl818_detach+0x66/0xd0 [ 85.959083][ T5351] comedi_device_detach_locked+0x178/0x750 [ 85.961677][ T5351] comedi_device_attach+0x5d4/0x720 [ 85.963950][ T5351] comedi_unlocked_ioctl+0x5ff/0x1020 [ 85.966423][ T5351] ? kasan_quarantine_put+0xdd/0x220 [ 85.968661][ T5351] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 85.971347][ T5351] ? do_futex+0x333/0x420 [ 85.973201][ T5351] ? __fget_files+0x2a/0x420 [ 85.975312][ T5351] ? __fget_files+0x3a0/0x420 [ 85.977528][ T5351] ? __fget_files+0x2a/0x420 [ 85.979407][ T5351] ? bpf_lsm_file_ioctl+0x9/0x20 [ 85.981494][ T5351] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 85.984014][ T5351] __se_sys_ioctl+0xfc/0x170 [ 85.986106][ T5351] do_syscall_64+0xfa/0xf80 [ 85.987903][ T5351] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.990264][ T5351] ? clear_bhb_loop+0x60/0xb0 [ 85.992168][ T5351] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.994517][ T5351] RIP: 0033:0x7fcbe4d8f7c9 [ 85.996348][ T5351] 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 [ 86.004128][ T5351] RSP: 002b:00007fcbe5cfd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 86.007696][ T5351] RAX: ffffffffffffffda RBX: 00007fcbe4fe5fa0 RCX: 00007fcbe4d8f7c9 [ 86.011072][ T5351] RDX: 00002000000000c0 RSI: 0000000040946400 RDI: 0000000000000003 [ 86.014574][ T5351] RBP: 00007fcbe4e13f91 R08: 0000000000000000 R09: 0000000000000000 [ 86.017668][ T5351] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 86.020720][ T5351] R13: 00007fcbe4fe6038 R14: 00007fcbe4fe5fa0 R15: 00007ffe238320a8 [ 86.023796][ T5351] [ 86.025135][ T5351] Modules linked in: [ 86.027181][ T5351] ---[ end trace 0000000000000000 ]--- [ 86.029609][ T5351] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 86.032348][ T5351] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 69 2c 71 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 48 2c 71 f9 4d 8b 24 24 48 83 c3 [ 86.040802][ T5351] RSP: 0018:ffffc9000d3679d8 EFLAGS: 00010206 [ 86.043498][ T5351] RAX: 0000000000000005 RBX: ffff888011986700 RCX: 0000000000100000 [ 86.046971][ T5351] RDX: ffffc9000f652000 RSI: 000000000000092b RDI: 000000000000092c [ 86.050489][ T5351] RBP: 0000000000000001 R08: ffff88803e52792f R09: 1ffff11007ca4f25 [ 86.054051][ T5351] R10: dffffc0000000000 R11: ffffffff88b6eea0 R12: 0000000000000028 [ 86.057665][ T5351] R13: dffffc0000000000 R14: ffff88803e527800 R15: dffffc0000000000 [ 86.061162][ T5351] FS: 00007fcbe5cfd6c0(0000) GS:ffff88808d6b5000(0000) knlGS:0000000000000000 [ 86.065172][ T5351] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.068115][ T5351] CR2: 00007fcbe4fdc888 CR3: 0000000010ed8000 CR4: 0000000000352ef0 [ 86.071682][ T5351] Kernel panic - not syncing: Fatal exception [ 86.074667][ T5351] Kernel Offset: disabled [ 86.076627][ T5351] Rebooting in 86400 seconds..