./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1206837556 <...> Warning: Permanently added '10.128.0.20' (ED25519) to the list of known hosts. execve("./syz-executor1206837556", ["./syz-executor1206837556"], 0x7ffd950ef150 /* 10 vars */) = 0 brk(NULL) = 0x55555b14f000 brk(0x55555b14fd00) = 0x55555b14fd00 arch_prctl(ARCH_SET_FS, 0x55555b14f380) = 0 set_tid_address(0x55555b14f650) = 5854 set_robust_list(0x55555b14f660, 24) = 0 rseq(0x55555b14fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1206837556", 4096) = 28 getrandom("\x80\xe7\x41\x1a\xc1\xff\x3e\x27", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555b14fd00 brk(0x55555b170d00) = 0x55555b170d00 brk(0x55555b171000) = 0x55555b171000 mprotect(0x7ffa90b2e000, 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/comedi3", O_RDONLY|FASYNC) = 3 [ 85.378685][ T5854] comedi comedi3: pcl818: I/O port conflict (0xfffffffffffffffb,16) [ 85.387144][ T5854] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN PTI [ 85.399033][ T5854] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 85.407447][ T5854] CPU: 0 UID: 0 PID: 5854 Comm: syz-executor120 Not tainted 6.16.0-rc5-next-20250710-syzkaller #0 PREEMPT(full) [ 85.419335][ T5854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 85.429390][ T5854] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 85.434969][ T5854] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 b9 0c 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 98 0c 34 f9 4d 8b 24 24 48 83 c3 [ 85.454573][ T5854] RSP: 0018:ffffc90003f479f0 EFLAGS: 00010206 [ 85.460638][ T5854] RAX: 0000000000000005 RBX: ffff88807dea0500 RCX: ffff88802b685a00 [ 85.468614][ T5854] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88814c5fc800 [ 85.476600][ T5854] RBP: 0000000000000001 R08: ffff88814c5fc92f R09: 1ffff110298bf925 [ 85.484570][ T5854] R10: dffffc0000000000 R11: ffffffff88f08970 R12: 0000000000000028 [ 85.492532][ T5854] R13: dffffc0000000000 R14: ffff88814c5fc800 R15: dffffc0000000000 [ 85.500499][ T5854] FS: 000055555b14f380(0000) GS:ffff888125798000(0000) knlGS:0000000000000000 [ 85.509420][ T5854] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.516012][ T5854] CR2: 0000200000000040 CR3: 0000000074348000 CR4: 00000000003526f0 [ 85.523990][ T5854] Call Trace: [ 85.527271][ T5854] [ 85.530208][ T5854] pcl818_detach+0x66/0xd0 [ 85.534630][ T5854] comedi_device_detach+0x134/0x720 [ 85.539828][ T5854] comedi_device_attach+0x568/0x670 [ 85.545024][ T5854] comedi_unlocked_ioctl+0x686/0xf40 [ 85.550321][ T5854] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 85.556143][ T5854] ? _raw_spin_lock_irq+0xae/0xf0 [ 85.561198][ T5854] ? __pfx_ptrace_notify+0x10/0x10 [ 85.566411][ T5854] ? bpf_lsm_file_ioctl+0x9/0x20 [ 85.571351][ T5854] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 85.577160][ T5854] __se_sys_ioctl+0xfc/0x170 [ 85.581766][ T5854] do_syscall_64+0xfa/0x3b0 [ 85.586266][ T5854] ? lockdep_hardirqs_on+0x9c/0x150 [ 85.591463][ T5854] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.597528][ T5854] ? clear_bhb_loop+0x60/0xb0 [ 85.602211][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.608118][ T5854] RIP: 0033:0x7ffa90abb3e9 [ 85.612544][ T5854] 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 [ 85.632145][ T5854] RSP: 002b:00007ffe58874cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 85.640554][ T5854] RAX: ffffffffffffffda RBX: 00007ffe58874ea8 RCX: 00007ffa90abb3e9 [ 85.648527][ T5854] RDX: 0000200000000140 RSI: 0000000040946400 RDI: 0000000000000003 [ 85.656502][ T5854] RBP: 00007ffa90b2e610 R08: 0000000000000000 R09: 00007ffe58874ea8 [ 85.664472][ T5854] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 85.672440][ T5854] R13: 00007ffe58874e98 R14: 0000000000000001 R15: 0000000000000001 [ 85.680418][ T5854] [ 85.683429][ T5854] Modules linked in: [ 85.687621][ T5854] ---[ end trace 0000000000000000 ]--- [ 85.693658][ T5854] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 85.699225][ T5854] Code: 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 b9 0c 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 98 0c 34 f9 4d 8b 24 24 48 83 c3 [ 85.718912][ T5854] RSP: 0018:ffffc90003f479f0 EFLAGS: 00010206 [ 85.725125][ T5854] RAX: 0000000000000005 RBX: ffff88807dea0500 RCX: ffff88802b685a00 [ 85.733141][ T5854] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88814c5fc800 [ 85.741141][ T5854] RBP: 0000000000000001 R08: ffff88814c5fc92f R09: 1ffff110298bf925 [ 85.749104][ T5854] R10: dffffc0000000000 R11: ffffffff88f08970 R12: 0000000000000028 [ 85.757278][ T5854] R13: dffffc0000000000 R14: ffff88814c5fc800 R15: dffffc0000000000 [ 85.765307][ T5854] FS: 000055555b14f380(0000) GS:ffff888125798000(0000) knlGS:0000000000000000 [ 85.774287][ T5854] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.780860][ T5854] CR2: 0000200000000040 CR3: 0000000074348000 CR4: 00000000003526f0 [ 85.788856][ T5854] Kernel panic - not syncing: Fatal exception [ 85.795281][ T5854] Kernel Offset: disabled [ 85.799600][ T5854] Rebooting in 86400 seconds..