program: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$can_j1939(0x1d, 0x2, 0x7) ioctl$ifreq_SIOCGIFINDEX_vcan(r1, 0x8933, &(0x7f00000000c0)={'vcan0\x00', 0x0}) (async) perf_event_open(&(0x7f0000000180)={0x2, 0x80, 0xbf, 0x1, 0x0, 0x0, 0x0, 0x0, 0x2040, 0xe, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0, 0x1}, 0x2086, 0x8, 0x0, 0x8, 0x3fe, 0x7fffffff, 0x80, 0x0, 0x0, 0x0, 0x8000000000000000}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xa) (async) madvise(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x15) sendmsg$can_j1939(r1, &(0x7f0000000300)={&(0x7f0000000000)={0x1d, r2, 0x2, {0x0, 0x0, 0x2}, 0x1}, 0x18, &(0x7f0000000240)={&(0x7f0000000300)}, 0x1, 0x0, 0x0, 0x20000014}, 0x8c0) (async, rerun: 64) r3 = socket$can_j1939(0x1d, 0x2, 0x7) (rerun: 64) ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000280)={'vcan0\x00', 0x0}) syz_usb_connect$cdc_ncm(0x0, 0x6e, 0x0, 0x0) (async) bind$can_j1939(r3, &(0x7f0000000100)={0x1d, r4, 0x0, {}, 0xfd}, 0x18) (async) connect$can_j1939(r3, &(0x7f0000000080)={0x1d, r4, 0x0, {0x0, 0x0, 0x2}, 0xfe}, 0x18) (async) r5 = openat$comedi(0xffffff9c, &(0x7f0000000040)='/dev/comedi3\x00', 0x2000, 0x0) ioctl$COMEDI_DEVCONFIG(r5, 0x40946400, &(0x7f0000000140)={'c6xdigio\x00', [0xfffffffb, 0x2169, 0x2, 0x100000, 0x88d6, 0x8f, 0xfffffffd, 0x100010, 0x1000002, 0xffffffff, 0x200, 0x8, 0x6, 0x1, 0x7, 0x7, 0x9, 0x3, 0x3, 0x101, 0x100, 0x3, 0x80, 0x3, 0x3, 0x1, 0x5721, 0x7db, 0x6, 0x7]}) sendmsg$can_j1939(r3, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000140)={&(0x7f00000001c0)="de1f17704eb2d9a39e4cc65e5604ade8944d4150875f6887ece4c7a1797162ddff3afa85fdc4", 0x26}, 0x1, 0x0, 0x0, 0x44011}, 0x40001) (async) sendmsg$can_j1939(r3, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000380)="c8ac65a9fd17e04d5b", 0x9}, 0x1, 0x0, 0x0, 0x20000081}, 0x480c4) socket$unix(0x1, 0x2, 0x0) sendmsg$nl_route_sched(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000480)=@newtfilter={0x24, 0x11, 0x1, 0x70bd2c, 0x25dfdbfc, {0x0, 0x0, 0x74, r2, {0xfff3, 0x10}, {0xfff1, 0x9}, {0x2, 0x8}}}, 0x24}, 0x1, 0xf0ffffffffffff, 0x0, 0x48040}, 0x20000050) [ 88.997720][ T5347] comedi comedi3: c6xdigio: I/O port conflict (0xfffffffffffffffb,3) [ 89.003044][ T5347] ------------[ cut here ]------------ [ 89.005623][ T5347] Unexpected driver unregister! [ 89.007895][ T5347] WARNING: drivers/base/driver.c:273 at 0x0, CPU#0: syz.0.0/5347 [ 89.011450][ T5347] Modules linked in: [ 89.013710][ T5347] CPU: 0 UID: 0 PID: 5347 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 89.017722][ T5347] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 89.022351][ T5347] RIP: 0010:driver_unregister+0x8d/0xa0 [ 89.024929][ T5347] Code: 73 68 4c 89 f7 e8 93 1b 9b fc 48 89 df 5b 41 5e 41 5f e9 e6 55 ff ff e8 31 11 f7 fb eb 05 e8 2a 11 f7 fb 48 8d 3d b3 d0 c1 09 <67> 48 0f b9 3a 5b 41 5e 41 5f c3 cc cc cc cc cc cc cc cc 90 90 90 [ 89.033599][ T5347] RSP: 0018:ffffc9000d55fa20 EFLAGS: 00010293 [ 89.036455][ T5347] RAX: ffffffff85ca19d6 RBX: ffffffff8f1c98c0 RCX: ffff8880007a4980 [ 89.040046][ T5347] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8f8bea90 [ 89.043722][ T5347] RBP: 0000000000000001 R08: ffff88803e25192f R09: 1ffff11007c4a325 [ 89.047378][ T5347] R10: dffffc0000000000 R11: ffffffff88b9ab30 R12: ffff88803e251838 [ 89.050865][ T5347] R13: ffffffff8f1c9810 R14: 0000000000000000 R15: dffffc0000000000 [ 89.054571][ T5347] FS: 00007fc7db1f56c0(0000) GS:ffff88808d6b5000(0000) knlGS:0000000000000000 [ 89.058584][ T5347] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.061414][ T5347] CR2: 00007f28392aab50 CR3: 000000000b546000 CR4: 0000000000352ef0 [ 89.065001][ T5347] Call Trace: [ 89.066493][ T5347] [ 89.067832][ T5347] comedi_device_detach_locked+0x178/0x750 [ 89.070396][ T5347] comedi_device_attach+0x5d4/0x720 [ 89.073036][ T5347] comedi_unlocked_ioctl+0x5ff/0x1020 [ 89.075374][ T5347] ? kasan_quarantine_put+0xdd/0x220 [ 89.077701][ T5347] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 89.080229][ T5347] ? do_futex+0x333/0x420 [ 89.082327][ T5347] ? __fget_files+0x2a/0x420 [ 89.084391][ T5347] ? __fget_files+0x3a0/0x420 [ 89.086579][ T5347] ? __fget_files+0x2a/0x420 [ 89.088596][ T5347] ? bpf_lsm_file_ioctl+0x9/0x20 [ 89.090754][ T5347] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 89.093472][ T5347] __se_sys_ioctl+0xfc/0x170 [ 89.095605][ T5347] do_syscall_64+0xfa/0xf80 [ 89.097622][ T5347] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.100295][ T5347] ? clear_bhb_loop+0x60/0xb0 [ 89.102924][ T5347] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.105941][ T5347] RIP: 0033:0x7fc7ded8f7c9 [ 89.107948][ T5347] 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 [ 89.116528][ T5347] RSP: 002b:00007fc7db1f5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 89.119914][ T5347] RAX: ffffffffffffffda RBX: 00007fc7defe5fa0 RCX: 00007fc7ded8f7c9 [ 89.123230][ T5347] RDX: 0000200000000140 RSI: 0000000040946400 RDI: 0000000000000047 [ 89.126445][ T5347] RBP: 00007fc7dee13f91 R08: 0000000000000000 R09: 0000000000000000 [ 89.129636][ T5347] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 89.133295][ T5347] R13: 00007fc7defe6038 R14: 00007fc7defe5fa0 R15: 00007ffc7eccc898 [ 89.136841][ T5347] [ 89.138209][ T5347] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 89.141475][ T5347] CPU: 0 UID: 0 PID: 5347 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 89.145548][ T5347] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 89.150306][ T5347] Call Trace: [ 89.151859][ T5347] [ 89.153263][ T5347] dump_stack_lvl+0x99/0x250 [ 89.155399][ T5347] ? __asan_memcpy+0x40/0x70 [ 89.157422][ T5347] ? __pfx_dump_stack_lvl+0x10/0x10 [ 89.159759][ T5347] ? __pfx__printk+0x10/0x10 [ 89.161832][ T5347] vpanic+0x237/0x6d0 [ 89.163623][ T5347] ? __pfx_vpanic+0x10/0x10 [ 89.165716][ T5347] ? is_bpf_text_address+0x292/0x2b0 [ 89.168118][ T5347] ? is_bpf_text_address+0x26/0x2b0 [ 89.170456][ T5347] panic+0xb9/0xc0 [ 89.172114][ T5347] ? __pfx_panic+0x10/0x10 [ 89.174148][ T5347] __warn+0x317/0x4b0 [ 89.176002][ T5347] __report_bug+0x288/0x500 [ 89.178129][ T5347] ? check_path+0x21/0x40 [ 89.180131][ T5347] ? __pfx___report_bug+0x10/0x10 [ 89.182504][ T5347] ? lockdep_unlock+0x89/0x120 [ 89.184776][ T5347] ? __pfx_dev_printk_emit+0x10/0x10 [ 89.187189][ T5347] report_bug_entry+0x16a/0x220 [ 89.189345][ T5347] ? driver_unregister+0x8d/0xa0 [ 89.191506][ T5347] ? driver_unregister+0x92/0xa0 [ 89.193754][ T5347] handle_bug+0xca/0x200 [ 89.195719][ T5347] exc_invalid_op+0x1a/0x50 [ 89.197771][ T5347] asm_exc_invalid_op+0x1a/0x20 [ 89.199929][ T5347] RIP: 0010:driver_unregister+0x8d/0xa0 [ 89.202310][ T5347] Code: 73 68 4c 89 f7 e8 93 1b 9b fc 48 89 df 5b 41 5e 41 5f e9 e6 55 ff ff e8 31 11 f7 fb eb 05 e8 2a 11 f7 fb 48 8d 3d b3 d0 c1 09 <67> 48 0f b9 3a 5b 41 5e 41 5f c3 cc cc cc cc cc cc cc cc 90 90 90 [ 89.210715][ T5347] RSP: 0018:ffffc9000d55fa20 EFLAGS: 00010293 [ 89.213421][ T5347] RAX: ffffffff85ca19d6 RBX: ffffffff8f1c98c0 RCX: ffff8880007a4980 [ 89.217137][ T5347] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8f8bea90 [ 89.220613][ T5347] RBP: 0000000000000001 R08: ffff88803e25192f R09: 1ffff11007c4a325 [ 89.224075][ T5347] R10: dffffc0000000000 R11: ffffffff88b9ab30 R12: ffff88803e251838 [ 89.227615][ T5347] R13: ffffffff8f1c9810 R14: 0000000000000000 R15: dffffc0000000000 [ 89.231062][ T5347] ? __pfx_c6xdigio_detach+0x10/0x10 [ 89.233426][ T5347] ? driver_unregister+0x86/0xa0 [ 89.235600][ T5347] comedi_device_detach_locked+0x178/0x750 [ 89.238224][ T5347] comedi_device_attach+0x5d4/0x720 [ 89.240569][ T5347] comedi_unlocked_ioctl+0x5ff/0x1020 [ 89.242994][ T5347] ? kasan_quarantine_put+0xdd/0x220 [ 89.245345][ T5347] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 89.247917][ T5347] ? do_futex+0x333/0x420 [ 89.249965][ T5347] ? __fget_files+0x2a/0x420 [ 89.252105][ T5347] ? __fget_files+0x3a0/0x420 [ 89.254314][ T5347] ? __fget_files+0x2a/0x420 [ 89.256433][ T5347] ? bpf_lsm_file_ioctl+0x9/0x20 [ 89.258628][ T5347] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 89.261291][ T5347] __se_sys_ioctl+0xfc/0x170 [ 89.263375][ T5347] do_syscall_64+0xfa/0xf80 [ 89.265528][ T5347] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.268181][ T5347] ? clear_bhb_loop+0x60/0xb0 [ 89.270302][ T5347] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.272851][ T5347] RIP: 0033:0x7fc7ded8f7c9 [ 89.274894][ T5347] 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 [ 89.283310][ T5347] RSP: 002b:00007fc7db1f5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 89.286993][ T5347] RAX: ffffffffffffffda RBX: 00007fc7defe5fa0 RCX: 00007fc7ded8f7c9 [ 89.290576][ T5347] RDX: 0000200000000140 RSI: 0000000040946400 RDI: 0000000000000047 [ 89.294234][ T5347] RBP: 00007fc7dee13f91 R08: 0000000000000000 R09: 0000000000000000 [ 89.297779][ T5347] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 89.301314][ T5347] R13: 00007fc7defe6038 R14: 00007fc7defe5fa0 R15: 00007ffc7eccc898 [ 89.304780][ T5347] [ 89.306520][ T5347] Kernel Offset: disabled [ 89.308483][ T5347] Rebooting in 86400 seconds..