./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3492564595 <...> Warning: Permanently added '10.128.0.117' (ED25519) to the list of known hosts. execve("./syz-executor3492564595", ["./syz-executor3492564595"], 0x7ffe29ba0eb0 /* 10 vars */) = 0 brk(NULL) = 0x55558ba6b000 brk(0x55558ba6bd00) = 0x55558ba6bd00 arch_prctl(ARCH_SET_FS, 0x55558ba6b380) = 0 set_tid_address(0x55558ba6b650) = 5848 set_robust_list(0x55558ba6b660, 24) = 0 rseq(0x55558ba6bca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3492564595", 4096) = 28 getrandom("\x06\x4a\xb3\x62\x91\xb7\x10\xd8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558ba6bd00 brk(0x55558ba8cd00) = 0x55558ba8cd00 brk(0x55558ba8d000) = 0x55558ba8d000 mprotect(0x7f05c3816000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 executing program write(1, "executing program\n", 18) = 18 openat(AT_FDCWD, "/dev/comedi0", O_RDONLY|O_EXCL|O_LARGEFILE) = 3 [ 78.709996][ T5848] comedi comedi0: pcl818: I/O port conflict (0x4,16) [ 78.718169][ T5848] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN PTI [ 78.730162][ T5848] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 78.738574][ T5848] CPU: 0 UID: 0 PID: 5848 Comm: syz-executor349 Not tainted 6.16.0-rc4-next-20250704-syzkaller #0 PREEMPT(full) [ 78.750490][ T5848] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 78.760551][ T5848] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 78.766123][ T5848] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 79 ca 34 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 58 ca 34 f9 4d 8b 24 24 48 83 c3 [ 78.785900][ T5848] RSP: 0018:ffffc90003ee79f0 EFLAGS: 00010206 [ 78.792001][ T5848] RAX: 0000000000000005 RBX: ffff88802854df00 RCX: ffff888033bd3c00 [ 78.799962][ T5848] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88802f550000 [ 78.808104][ T5848] RBP: 0000000000000001 R08: ffff88802f55012f R09: 1ffff11005eaa025 [ 78.816122][ T5848] R10: dffffc0000000000 R11: ffffffff88efad60 R12: 0000000000000028 [ 78.824094][ T5848] R13: dffffc0000000000 R14: ffff88802f550000 R15: dffffc0000000000 [ 78.832061][ T5848] FS: 000055558ba6b380(0000) GS:ffff8881257af000(0000) knlGS:0000000000000000 [ 78.840997][ T5848] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.847654][ T5848] CR2: 0000558c02111000 CR3: 0000000072048000 CR4: 00000000003526f0 [ 78.855643][ T5848] Call Trace: [ 78.858953][ T5848] [ 78.862589][ T5848] pcl818_detach+0x66/0xd0 [ 78.867012][ T5848] comedi_device_detach+0x134/0x720 [ 78.872229][ T5848] comedi_device_attach+0x568/0x670 [ 78.877477][ T5848] comedi_unlocked_ioctl+0x686/0xf40 [ 78.882784][ T5848] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 78.888585][ T5848] ? _raw_spin_lock_irq+0xae/0xf0 [ 78.893720][ T5848] ? __pfx_ptrace_notify+0x10/0x10 [ 78.898915][ T5848] ? bpf_lsm_file_ioctl+0x9/0x20 [ 78.903858][ T5848] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 78.909701][ T5848] __se_sys_ioctl+0xf9/0x170 [ 78.914573][ T5848] do_syscall_64+0xfa/0x3b0 [ 78.919193][ T5848] ? lockdep_hardirqs_on+0x9c/0x150 [ 78.924389][ T5848] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 78.930448][ T5848] ? clear_bhb_loop+0x60/0xb0 [ 78.935132][ T5848] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 78.941017][ T5848] RIP: 0033:0x7f05c37a33e9 [ 78.945430][ T5848] Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 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 b8 ff ff ff f7 d8 64 89 01 48 [ 78.965120][ T5848] RSP: 002b:00007ffd45c1fac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 78.973644][ T5848] RAX: ffffffffffffffda RBX: 00007ffd45c1fc98 RCX: 00007f05c37a33e9 [ 78.981628][ T5848] RDX: 0000200000000080 RSI: 0000000040946400 RDI: 0000000000000003 [ 78.989705][ T5848] RBP: 00007f05c3816610 R08: 0000000000000000 R09: 00007ffd45c1fc98 [ 78.997684][ T5848] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 79.005665][ T5848] R13: 00007ffd45c1fc88 R14: 0000000000000001 R15: 0000000000000001 [ 79.013655][ T5848] [ 79.016743][ T5848] Modules linked in: [ 79.020887][ T5848] ---[ end trace 0000000000000000 ]--- [ 79.026459][ T5848] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 79.032026][ T5848] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 79 ca 34 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 58 ca 34 f9 4d 8b 24 24 48 83 c3 [ 79.051949][ T5848] RSP: 0018:ffffc90003ee79f0 EFLAGS: 00010206 [ 79.058173][ T5848] RAX: 0000000000000005 RBX: ffff88802854df00 RCX: ffff888033bd3c00 [ 79.066220][ T5848] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88802f550000 [ 79.074216][ T5848] RBP: 0000000000000001 R08: ffff88802f55012f R09: 1ffff11005eaa025 [ 79.082426][ T5848] R10: dffffc0000000000 R11: ffffffff88efad60 R12: 0000000000000028 [ 79.090606][ T5848] R13: dffffc0000000000 R14: ffff88802f550000 R15: dffffc0000000000 [ 79.098610][ T5848] FS: 000055558ba6b380(0000) GS:ffff8881258af000(0000) knlGS:0000000000000000 [ 79.107577][ T5848] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.114242][ T5848] CR2: 00000000005fdeb8 CR3: 0000000072048000 CR4: 00000000003526f0 [ 79.122389][ T5848] Kernel panic - not syncing: Fatal exception [ 79.128634][ T5848] Kernel Offset: disabled [ 79.133028][ T5848] Rebooting in 86400 seconds..