program: r0 = socket$inet_sctp(0x2, 0x1, 0x84) setsockopt$inet_sctp_SCTP_SOCKOPT_CONNECTX_OLD(r0, 0x84, 0x6b, &(0x7f0000000240)=[@in={0x2, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}}], 0x10) shutdown(r0, 0x1) r1 = openat$rfkill(0xffffffffffffff9c, &(0x7f0000000180), 0x200080, 0x0) write$rfkill(r1, &(0x7f0000000140)={0x37f5, 0x2, 0x3, 0x1}, 0x8) setsockopt$inet_sctp_SCTP_AUTH_DELETE_KEY(r0, 0x84, 0x82, &(0x7f0000000000), 0x8) r2 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r2, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f00000002c0)={{0x14}, [@NFT_MSG_NEWTABLE={0x20, 0x0, 0xa, 0x301, 0x0, 0x0, {0x1}, [@NFTA_TABLE_NAME={0x9, 0x1, 'syz0\x00'}]}, @NFT_MSG_NEWCHAIN={0x2c, 0x3, 0xa, 0x5, 0x0, 0x0, {0x1}, [@NFTA_CHAIN_NAME={0x9, 0x3, 'syz2\x00'}, @NFTA_CHAIN_TABLE={0x9, 0x1, 'syz0\x00'}]}, @NFT_MSG_NEWRULE={0x48, 0x6, 0xa, 0x401, 0x0, 0x0, {0x1}, [@NFTA_RULE_CHAIN_ID={0x8}, @NFTA_RULE_TABLE={0x9, 0x1, 'syz0\x00'}, @NFTA_RULE_EXPRESSIONS={0x20, 0x4, 0x0, 0x1, [{0x1c, 0x1, 0x0, 0x1, @xfrm={{0x9}, @val={0xc, 0x2, 0x0, 0x1, [@NFTA_XFRM_KEY={0x8, 0x2, 0x1, 0x0, 0x2}]}}}]}]}], {0x14}}, 0xbc}}, 0x0) socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r5 = creat(&(0x7f0000000040)='./file0\x00', 0x0) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, &(0x7f00000001c0)={'wg0\x00'}) close(r5) r6 = socket$inet6_sctp(0xa, 0x1, 0x84) r7 = openat$comedi(0xffffff9c, &(0x7f0000000040)='/dev/comedi3\x00', 0x2000, 0x0) ioctl$COMEDI_DEVCONFIG(r7, 0x40946400, &(0x7f0000000140)={'pcl818\x00', [0xfffffffb, 0x2166, 0x2, 0x100000, 0x88d6, 0x8f, 0xffeffffd, 0x9, 0x2, 0xffffffff, 0x200, 0x8, 0x344, 0x6, 0x7, 0x1, 0x9, 0x3, 0x3, 0xe, 0x100, 0x3, 0x80, 0x7ff, 0x1, 0x2, 0xb0c4, 0x7dd, 0x96c, 0x207, 0x1]}) r8 = socket$inet6_sctp(0xa, 0x5, 0x84) shutdown(r8, 0x0) getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r8, 0x84, 0x6f, &(0x7f0000000000)={0x0, 0x1c, &(0x7f00000002c0)=[@in6={0xa, 0x0, 0x0, @private0}]}, &(0x7f0000000180)=0x10) dup3(r8, r6, 0x0) getsockopt$inet_sctp_SCTP_MAX_BURST(r5, 0x84, 0x71, &(0x7f0000000000)=@assoc_value={0x0}, &(0x7f0000000040)=0x8) getsockopt$inet_sctp6_SCTP_DEFAULT_SNDINFO(r6, 0x84, 0x22, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x0, r9}, &(0x7f0000000140)=0x10) setsockopt$inet_sctp_SCTP_PR_SUPPORTED(r3, 0x84, 0x71, &(0x7f0000000040)={r9, 0x7}, 0x8) bpf$PROG_LOAD(0x5, &(0x7f0000000080)={0x3, 0x8, 0x0, &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @sched_cls}, 0x94) ioctl$TUNSETIFF(0xffffffffffffffff, 0x400454ca, &(0x7f0000000080)={'bridge0\x00', 0x100}) socket$netlink(0x10, 0x3, 0x10) perf_event_open(&(0x7f00000000c0)={0x5, 0x80, 0xec, 0x5, 0xff, 0x7, 0x0, 0x7fffffff, 0xd97dc, 0x1, 0x0, 0x0, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x1, 0x1, 0x0, 0x1, 0x0, 0x0, 0x1, 0x0, 0x1, 0x1, 0x1, 0x0, 0x0, 0x0, 0x1, 0x1, 0x1, 0x0, 0x1, 0x1, 0x0, 0xffffffff, 0x0, @perf_config_ext={0xffffffffffffffff, 0x9}, 0x20a, 0x7ff, 0x7, 0x0, 0x81, 0x5, 0x5, 0x0, 0x0, 0x0, 0x2}, 0x0, 0xa, 0xffffffffffffffff, 0x0) ioctl$PERF_EVENT_IOC_SET_FILTER(r4, 0x89fd, &(0x7f0000000080)) [ 74.686371][ T4707] Bluetooth: hci0: command tx timeout [ 74.782558][ T5358] comedi comedi3: pcl818: I/O port conflict (0xfffffffffffffffb,16) [ 74.786952][ T5358] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN NOPTI [ 74.792171][ T5358] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 74.795605][ T5358] CPU: 0 UID: 0 PID: 5358 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 74.799412][ T5358] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 74.803948][ T5358] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 74.806492][ T5358] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 f9 12 36 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 d8 12 36 f9 4d 8b 24 24 48 83 c3 [ 74.814401][ T5358] RSP: 0018:ffffc9000d40f9f8 EFLAGS: 00010206 [ 74.817034][ T5358] RAX: 0000000000000005 RBX: ffff88801a2ee180 RCX: 0000000000100000 [ 74.820540][ T5358] RDX: ffffc9000e27a000 RSI: 00000000000009df RDI: 00000000000009e0 [ 74.823913][ T5358] RBP: 0000000000000001 R08: ffff888033da692f R09: 1ffff110067b4d25 [ 74.827421][ T5358] R10: dffffc0000000000 R11: ffffffff88ee71e0 R12: 0000000000000028 [ 74.830568][ T5358] R13: dffffc0000000000 R14: ffff888033da6800 R15: dffffc0000000000 [ 74.834206][ T5358] FS: 00007efc374526c0(0000) GS:ffff88808d20d000(0000) knlGS:0000000000000000 [ 74.838118][ T5358] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.841102][ T5358] CR2: 00007efc37430fc8 CR3: 000000004329e000 CR4: 0000000000352ef0 [ 74.844495][ T5358] Call Trace: [ 74.845957][ T5358] [ 74.847204][ T5358] pcl818_detach+0x66/0xd0 [ 74.849162][ T5358] comedi_device_detach_locked+0x175/0x750 [ 74.851642][ T5358] comedi_device_attach+0x5d4/0x720 [ 74.853783][ T5358] comedi_unlocked_ioctl+0x5ff/0x1020 [ 74.856108][ T5358] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 74.858560][ T5358] ? __lock_acquire+0xab9/0xd20 [ 74.860739][ T5358] ? __fget_files+0x2a/0x420 [ 74.862850][ T5358] ? __fget_files+0x2a/0x420 [ 74.864879][ T5358] ? __fget_files+0x3a0/0x420 [ 74.867053][ T5358] ? __fget_files+0x2a/0x420 [ 74.869144][ T5358] ? bpf_lsm_file_ioctl+0x9/0x20 [ 74.871257][ T5358] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 74.873719][ T5358] __se_sys_ioctl+0xf9/0x170 [ 74.875588][ T5358] do_syscall_64+0xfa/0x3b0 [ 74.877339][ T5358] ? lockdep_hardirqs_on+0x9c/0x150 [ 74.879589][ T5358] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.882079][ T5358] ? clear_bhb_loop+0x60/0xb0 [ 74.884037][ T5358] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.886632][ T5358] RIP: 0033:0x7efc3658ebe9 [ 74.888665][ T5358] 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 [ 74.897409][ T5358] RSP: 002b:00007efc37452038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 74.901298][ T5358] RAX: ffffffffffffffda RBX: 00007efc367c5fa0 RCX: 00007efc3658ebe9 [ 74.904764][ T5358] RDX: 0000200000000140 RSI: 0000000040946400 RDI: 0000000000000009 [ 74.908205][ T5358] RBP: 00007efc36611e19 R08: 0000000000000000 R09: 0000000000000000 [ 74.911643][ T5358] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 74.914875][ T5358] R13: 00007efc367c6038 R14: 00007efc367c5fa0 R15: 00007ffebc1c2048 [ 74.918121][ T5358] [ 74.919476][ T5358] Modules linked in: [ 74.921850][ T5358] ---[ end trace 0000000000000000 ]--- [ 74.931833][ T5358] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 74.934569][ T5358] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 f9 12 36 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 d8 12 36 f9 4d 8b 24 24 48 83 c3 [ 74.942271][ T5358] RSP: 0018:ffffc9000d40f9f8 EFLAGS: 00010206 [ 74.946127][ T5358] RAX: 0000000000000005 RBX: ffff88801a2ee180 RCX: 0000000000100000 [ 74.949419][ T5358] RDX: ffffc9000e27a000 RSI: 00000000000009df RDI: 00000000000009e0 [ 74.952497][ T5358] RBP: 0000000000000001 R08: ffff888033da692f R09: 1ffff110067b4d25 [ 74.956378][ T5358] R10: dffffc0000000000 R11: ffffffff88ee71e0 R12: 0000000000000028 [ 74.959576][ T5358] R13: dffffc0000000000 R14: ffff888033da6800 R15: dffffc0000000000 [ 74.962515][ T5358] FS: 00007efc374526c0(0000) GS:ffff88808d20d000(0000) knlGS:0000000000000000 [ 74.966520][ T5358] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.969132][ T5358] CR2: 00007efc36798558 CR3: 000000004329e000 CR4: 0000000000352ef0 [ 74.972596][ T5358] Kernel panic - not syncing: Fatal exception [ 74.975561][ T5358] Kernel Offset: disabled [ 74.977361][ T5358] Rebooting in 86400 seconds..