program: r0 = openat$cdrom(0xffffffffffffff9c, &(0x7f0000000000), 0x3e1902, 0x0) ioctl$CDROM_LOCKDOOR(r0, 0x5329, 0x0) ioctl$CDROMEJECT(r0, 0x5309) r1 = openat$comedi(0xffffff9c, &(0x7f0000000040)='/dev/comedi3\x00', 0x2000, 0x0) r2 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000040), 0xffffffffffffffff) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$sock_SIOCGIFINDEX_80211(r3, 0x8933, &(0x7f0000000000)={'wlan0\x00', 0x0}) sendmsg$NL80211_CMD_VENDOR(r3, &(0x7f0000000180)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000100)={0x30, r2, 0x1, 0x0, 0x0, {{}, {@void, @val={0x8, 0x3, r4}, @val={0xc}}}, [@NL80211_ATTR_VENDOR_ID={0x8, 0xc3, 0x1374}]}, 0x30}}, 0x0) socket$unix(0x1, 0x2, 0x0) ioctl$COMEDI_DEVCONFIG(r1, 0x40946400, &(0x7f0000000140)={'pcl818\x00', [0xfffffffb, 0x2166, 0x2, 0x100000, 0x88d6, 0x8f, 0xfffffffd, 0x100010, 0xb, 0xffffffbf, 0x200, 0x8, 0x5, 0x1, 0x8, 0x7, 0x0, 0x40003, 0x3, 0x101, 0x100, 0x3, 0x80, 0x5, 0xb, 0x1, 0x4, 0x7db, 0x8, 0x7, 0x40000]}) ioctl$CDROMREADMODE1(r0, 0x530d, &(0x7f0000000180)={0x7, 0x9, 0xf9, 0xff, 0x6, 0x5}) [ 68.861053][ T4691] Bluetooth: hci0: command tx timeout [ 68.933348][ T5344] comedi comedi3: pcl818: I/O port conflict (0xfffffffffffffffb,16) [ 68.936605][ T5344] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN NOPTI [ 68.940878][ T5344] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 68.944049][ T5344] CPU: 0 UID: 0 PID: 5344 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 68.947628][ T5344] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 68.952218][ T5344] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 68.954824][ T5344] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 39 56 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 18 56 71 f9 4d 8b 24 24 48 83 c3 [ 68.963156][ T5344] RSP: 0018:ffffc9000d4af9d8 EFLAGS: 00010206 [ 68.965914][ T5344] RAX: 0000000000000005 RBX: ffff888042269f00 RCX: 0000000000100000 [ 68.969455][ T5344] RDX: ffffc90020001000 RSI: 00000000000009cd RDI: 00000000000009ce [ 68.972909][ T5344] RBP: 0000000000000001 R08: ffff88803e45092f R09: 1ffff11007c8a125 [ 68.976142][ T5344] R10: dffffc0000000000 R11: ffffffff88b6a800 R12: 0000000000000028 [ 68.979247][ T5344] R13: dffffc0000000000 R14: ffff88803e450800 R15: dffffc0000000000 [ 68.982544][ T5344] FS: 00007f69551886c0(0000) GS:ffff88808d6b7000(0000) knlGS:0000000000000000 [ 68.986404][ T5344] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.989211][ T5344] CR2: 00007f8483bba3f6 CR3: 0000000042afb000 CR4: 0000000000352ef0 [ 68.992390][ T5344] Call Trace: [ 68.993681][ T5344] [ 68.994953][ T5344] pcl818_detach+0x66/0xd0 [ 68.996902][ T5344] comedi_device_detach_locked+0x178/0x750 [ 68.999884][ T5344] comedi_device_attach+0x5d4/0x720 [ 69.002188][ T5344] comedi_unlocked_ioctl+0x5ff/0x1020 [ 69.005058][ T5344] ? kasan_quarantine_put+0xdd/0x220 [ 69.007456][ T5344] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 69.010069][ T5344] ? file_init_path+0x3b/0x590 [ 69.012176][ T5344] ? do_futex+0x395/0x420 [ 69.014132][ T5344] ? __fget_files+0x2a/0x420 [ 69.016238][ T5344] ? __fget_files+0x3a0/0x420 [ 69.018305][ T5344] ? __fget_files+0x2a/0x420 [ 69.020362][ T5344] ? bpf_lsm_file_ioctl+0x9/0x20 [ 69.022539][ T5344] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 69.025135][ T5344] __se_sys_ioctl+0xfc/0x170 [ 69.027192][ T5344] do_syscall_64+0xfa/0xf80 [ 69.029214][ T5344] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 69.031943][ T5344] ? clear_bhb_loop+0x60/0xb0 [ 69.034097][ T5344] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 69.036697][ T5344] RIP: 0033:0x7f695438f7c9 [ 69.038577][ T5344] 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 [ 69.046875][ T5344] RSP: 002b:00007f6955188038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 69.050562][ T5344] RAX: ffffffffffffffda RBX: 00007f69545e5fa0 RCX: 00007f695438f7c9 [ 69.053979][ T5344] RDX: 0000200000000140 RSI: 0000000040946400 RDI: 0000000000000004 [ 69.057266][ T5344] RBP: 00007f6954413f91 R08: 0000000000000000 R09: 0000000000000000 [ 69.060527][ T5344] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 69.063794][ T5344] R13: 00007f69545e6038 R14: 00007f69545e5fa0 R15: 00007ffddbbfb718 [ 69.067164][ T5344] [ 69.068526][ T5344] Modules linked in: [ 69.070642][ T5344] ---[ end trace 0000000000000000 ]--- [ 69.095053][ T5344] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 69.097654][ T5344] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 39 56 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 18 56 71 f9 4d 8b 24 24 48 83 c3 [ 69.106386][ T5344] RSP: 0018:ffffc9000d4af9d8 EFLAGS: 00010206 [ 69.109244][ T5344] RAX: 0000000000000005 RBX: ffff888042269f00 RCX: 0000000000100000 [ 69.113116][ T5344] RDX: ffffc90020001000 RSI: 00000000000009cd RDI: 00000000000009ce [ 69.116660][ T5344] RBP: 0000000000000001 R08: ffff88803e45092f R09: 1ffff11007c8a125 [ 69.120257][ T5344] R10: dffffc0000000000 R11: ffffffff88b6a800 R12: 0000000000000028 [ 69.124251][ T5344] R13: dffffc0000000000 R14: ffff88803e450800 R15: dffffc0000000000 [ 69.127934][ T5344] FS: 00007f69551886c0(0000) GS:ffff88808d6b7000(0000) knlGS:0000000000000000 [ 69.132472][ T5344] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.135490][ T5344] CR2: 00007f6955166fc8 CR3: 0000000042afb000 CR4: 0000000000352ef0 [ 69.139049][ T5344] Kernel panic - not syncing: Fatal exception [ 69.141974][ T5344] Kernel Offset: disabled [ 69.143925][ T5344] Rebooting in 86400 seconds..