program: r0 = openat$comedi(0xffffff9c, &(0x7f0000000040)='/dev/comedi3\x00', 0x2000, 0x0) ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f0000000080)={'c6xdigio\x00', [0x8, 0x181, 0x2, 0xa, 0x14000000, 0x0, 0xfffffffc, 0x2, 0xffd, 0x5, 0x3, 0x723, 0x400, 0x2, 0x13, 0x2, 0xffffffa7, 0x9, 0x34d, 0x1, 0x3fd, 0x4000009, 0x1fc, 0xe2df, 0x9, 0xfffffc00, 0x4, 0x40000, 0x7, 0xf58, 0x6]}) ioctl$COMEDI_INSN(r0, 0x8028640c, &(0x7f0000000000)={0x4000000, 0x92, 0x0, 0x1, 0x80000000}) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) close(r1) r2 = socket$inet6_mptcp(0xa, 0x1, 0x106) bind$inet6(r1, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c) listen(r2, 0xfffffffc) r3 = socket$inet_mptcp(0x2, 0x1, 0x106) connect$inet(r3, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10) r4 = socket(0x10, 0x3, 0x0) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$sock_SIOCGIFINDEX(r5, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r4, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r6, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0xffff}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0x4, 0x0, 0x0, 0x0, 0x7, 0x8}, {0x12, 0x2, 0x0, 0x1, 0x8001, 0x400}, 0xa5, 0x4, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x8057}]}}]}, 0x60}}, 0x44080) r7 = socket$nl_generic(0x10, 0x3, 0x10) r8 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), 0xffffffffffffffff) sendmsg$MPTCP_PM_CMD_ADD_ADDR(r7, &(0x7f0000000400)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000180)={0x30, r8, 0x1, 0x0, 0x0, {}, [@MPTCP_PM_ATTR_ADDR={0x1c, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0x2}, @MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @local}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x6}]}]}, 0x30}, 0x1, 0x0, 0x0, 0xaa34a4cfdf933205}, 0x10) r9 = socket$nl_generic(0x10, 0x3, 0x10) r10 = syz_genetlink_get_family_id$mptcp(&(0x7f00000002c0), 0xffffffffffffffff) sendmsg$MPTCP_PM_CMD_ADD_ADDR(r9, &(0x7f0000000480)={0x0, 0x0, &(0x7f0000000440)={&(0x7f0000000200)={0x20, r10, 0x1, 0x0, 0x0, {0x7}, [@MPTCP_PM_ATTR_ADDR={0xc, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x1}]}]}, 0x20}}, 0x0) [ 85.021680][ T4681] Bluetooth: hci0: command tx timeout [ 85.130769][ T5340] comedi comedi3: c6xdigio: I/O port conflict (0x8,3) [ 85.133930][ T5340] ------------[ cut here ]------------ [ 85.136570][ T5340] Unexpected driver unregister! [ 85.139385][ T5340] WARNING: drivers/base/driver.c:273 at 0x0, CPU#0: syz.0.0/5340 [ 85.142762][ T5340] Modules linked in: [ 85.144459][ T5340] CPU: 0 UID: 0 PID: 5340 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.147981][ T5340] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.153406][ T5340] RIP: 0010:driver_unregister+0x8d/0xa0 [ 85.155877][ T5340] Code: 73 68 4c 89 f7 e8 93 92 95 fc 48 89 df 5b 41 5e 41 5f e9 76 52 ff ff e8 81 15 f0 fb eb 05 e8 7a 15 f0 fb 48 8d 3d 13 91 db 09 <67> 48 0f b9 3a 5b 41 5e 41 5f c3 cc cc cc cc cc cc cc cc 90 90 90 [ 85.164583][ T5340] RSP: 0018:ffffc9000daa7a20 EFLAGS: 00010283 [ 85.167351][ T5340] RAX: ffffffff85d1ab16 RBX: ffffffff8f3db980 RCX: 0000000000100000 [ 85.171400][ T5340] RDX: ffffc90020001000 RSI: 00000000000008c7 RDI: ffffffff8fad3c30 [ 85.175573][ T5340] RBP: 0000000000000001 R08: ffff88803fc1592f R09: 1ffff11007f82b25 [ 85.179619][ T5340] R10: dffffc0000000000 R11: ffffffff88c8c880 R12: ffff88803fc15838 [ 85.183150][ T5340] R13: ffffffff8f3db8d0 R14: 0000000000000000 R15: dffffc0000000000 [ 85.186728][ T5340] FS: 00007fb293c6a6c0(0000) GS:ffff88808d23e000(0000) knlGS:0000000000000000 [ 85.190983][ T5340] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.193801][ T5340] CR2: 00007fb292fdb3b8 CR3: 0000000042c5c000 CR4: 0000000000352ef0 [ 85.197178][ T5340] Call Trace: [ 85.199173][ T5340] [ 85.200214][ T5340] comedi_device_detach_locked+0x178/0x750 [ 85.202483][ T5340] comedi_device_attach+0x5d4/0x720 [ 85.204357][ T5340] comedi_unlocked_ioctl+0x673/0x10b0 [ 85.206606][ T5340] ? kasan_quarantine_put+0xdd/0x220 [ 85.209784][ T5340] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 85.212603][ T5340] ? do_futex+0x333/0x420 [ 85.214386][ T5340] ? __fget_files+0x2a/0x420 [ 85.216370][ T5340] ? __fget_files+0x3a0/0x420 [ 85.218573][ T5340] ? __fget_files+0x2a/0x420 [ 85.220413][ T5340] ? bpf_lsm_file_ioctl+0x9/0x20 [ 85.222425][ T5340] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 85.224820][ T5340] __se_sys_ioctl+0xfc/0x170 [ 85.226723][ T5340] do_syscall_64+0xfa/0xf80 [ 85.228928][ T5340] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.231714][ T5340] ? clear_bhb_loop+0x60/0xb0 [ 85.233882][ T5340] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.236415][ T5340] RIP: 0033:0x7fb292d8f7c9 [ 85.238725][ T5340] 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 [ 85.247045][ T5340] RSP: 002b:00007fb293c6a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 85.250948][ T5340] RAX: ffffffffffffffda RBX: 00007fb292fe5fa0 RCX: 00007fb292d8f7c9 [ 85.254386][ T5340] RDX: 0000200000000080 RSI: 0000000040946400 RDI: 0000000000000003 [ 85.257838][ T5340] RBP: 00007fb292e13f91 R08: 0000000000000000 R09: 0000000000000000 [ 85.261642][ T5340] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.265272][ T5340] R13: 00007fb292fe6038 R14: 00007fb292fe5fa0 R15: 00007ffe17f1a428 [ 85.268911][ T5340] [ 85.270696][ T5340] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 85.274076][ T5340] CPU: 0 UID: 0 PID: 5340 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.277975][ T5340] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.282863][ T5340] Call Trace: [ 85.284417][ T5340] [ 85.285775][ T5340] dump_stack_lvl+0x99/0x250 [ 85.287895][ T5340] ? __asan_memcpy+0x40/0x70 [ 85.290170][ T5340] ? __pfx_dump_stack_lvl+0x10/0x10 [ 85.292482][ T5340] ? __pfx__printk+0x10/0x10 [ 85.294589][ T5340] vpanic+0x237/0x6d0 [ 85.296335][ T5340] ? __pfx_vpanic+0x10/0x10 [ 85.298637][ T5340] ? is_bpf_text_address+0x292/0x2b0 [ 85.301222][ T5340] ? is_bpf_text_address+0x26/0x2b0 [ 85.303749][ T5340] panic+0xb9/0xc0 [ 85.305305][ T5340] ? __pfx_panic+0x10/0x10 [ 85.307288][ T5340] __warn+0x317/0x4b0 [ 85.309424][ T5340] __report_bug+0x288/0x500 [ 85.311707][ T5340] ? check_path+0x21/0x40 [ 85.313423][ T5340] ? __pfx___report_bug+0x10/0x10 [ 85.315362][ T5340] ? lockdep_unlock+0x89/0x120 [ 85.317370][ T5340] ? __pfx_dev_printk_emit+0x10/0x10 [ 85.320174][ T5340] report_bug_entry+0x16a/0x220 [ 85.322327][ T5340] ? driver_unregister+0x8d/0xa0 [ 85.324564][ T5340] ? driver_unregister+0x92/0xa0 [ 85.326674][ T5340] handle_bug+0xca/0x200 [ 85.328465][ T5340] exc_invalid_op+0x1a/0x50 [ 85.330281][ T5340] asm_exc_invalid_op+0x1a/0x20 [ 85.332057][ T5340] RIP: 0010:driver_unregister+0x8d/0xa0 [ 85.334000][ T5340] Code: 73 68 4c 89 f7 e8 93 92 95 fc 48 89 df 5b 41 5e 41 5f e9 76 52 ff ff e8 81 15 f0 fb eb 05 e8 7a 15 f0 fb 48 8d 3d 13 91 db 09 <67> 48 0f b9 3a 5b 41 5e 41 5f c3 cc cc cc cc cc cc cc cc 90 90 90 [ 85.341102][ T5340] RSP: 0018:ffffc9000daa7a20 EFLAGS: 00010283 [ 85.343094][ T5340] RAX: ffffffff85d1ab16 RBX: ffffffff8f3db980 RCX: 0000000000100000 [ 85.345962][ T5340] RDX: ffffc90020001000 RSI: 00000000000008c7 RDI: ffffffff8fad3c30 [ 85.348684][ T5340] RBP: 0000000000000001 R08: ffff88803fc1592f R09: 1ffff11007f82b25 [ 85.352097][ T5340] R10: dffffc0000000000 R11: ffffffff88c8c880 R12: ffff88803fc15838 [ 85.355948][ T5340] R13: ffffffff8f3db8d0 R14: 0000000000000000 R15: dffffc0000000000 [ 85.359669][ T5340] ? __pfx_c6xdigio_detach+0x10/0x10 [ 85.361900][ T5340] ? driver_unregister+0x86/0xa0 [ 85.363886][ T5340] comedi_device_detach_locked+0x178/0x750 [ 85.366295][ T5340] comedi_device_attach+0x5d4/0x720 [ 85.368611][ T5340] comedi_unlocked_ioctl+0x673/0x10b0 [ 85.371154][ T5340] ? kasan_quarantine_put+0xdd/0x220 [ 85.373987][ T5340] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 85.376616][ T5340] ? do_futex+0x333/0x420 [ 85.378665][ T5340] ? __fget_files+0x2a/0x420 [ 85.380833][ T5340] ? __fget_files+0x3a0/0x420 [ 85.382951][ T5340] ? __fget_files+0x2a/0x420 [ 85.385032][ T5340] ? bpf_lsm_file_ioctl+0x9/0x20 [ 85.387277][ T5340] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 85.390032][ T5340] __se_sys_ioctl+0xfc/0x170 [ 85.392066][ T5340] do_syscall_64+0xfa/0xf80 [ 85.394277][ T5340] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.397149][ T5340] ? clear_bhb_loop+0x60/0xb0 [ 85.400039][ T5340] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.402842][ T5340] RIP: 0033:0x7fb292d8f7c9 [ 85.404896][ T5340] 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 [ 85.413220][ T5340] RSP: 002b:00007fb293c6a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 85.417220][ T5340] RAX: ffffffffffffffda RBX: 00007fb292fe5fa0 RCX: 00007fb292d8f7c9 [ 85.420662][ T5340] RDX: 0000200000000080 RSI: 0000000040946400 RDI: 0000000000000003 [ 85.424012][ T5340] RBP: 00007fb292e13f91 R08: 0000000000000000 R09: 0000000000000000 [ 85.427153][ T5340] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.430321][ T5340] R13: 00007fb292fe6038 R14: 00007fb292fe5fa0 R15: 00007ffe17f1a428 [ 85.433695][ T5340] [ 85.435444][ T5340] Kernel Offset: disabled [ 85.437326][ T5340] Rebooting in 86400 seconds..