./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2969548658 <...> Warning: Permanently added '10.128.0.2' (ED25519) to the list of known hosts. execve("./syz-executor2969548658", ["./syz-executor2969548658"], 0x7ffce7a4db30 /* 10 vars */) = 0 brk(NULL) = 0x555567b87000 brk(0x555567b87d00) = 0x555567b87d00 arch_prctl(ARCH_SET_FS, 0x555567b87380) = 0 set_tid_address(0x555567b87650) = 5854 set_robust_list(0x555567b87660, 24) = 0 rseq(0x555567b87ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2969548658", 4096) = 28 getrandom("\xf9\x0f\xb6\xc0\xa8\x21\x47\x7d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555567b87d00 brk(0x555567ba8d00) = 0x555567ba8d00 brk(0x555567ba9000) = 0x555567ba9000 mprotect(0x7f9061e61000, 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 [ 89.684615][ T5854] comedi comedi3: pcl818: I/O port conflict (0xfffffffffffffffb,16) [ 89.693083][ T5854] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN PTI [ 89.705156][ T5854] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 89.713560][ T5854] CPU: 0 UID: 0 PID: 5854 Comm: syz-executor296 Not tainted 6.16.0-rc5-next-20250710-syzkaller #0 PREEMPT(full) [ 89.725480][ T5854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 89.735609][ T5854] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 89.741167][ 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 [ 89.760953][ T5854] RSP: 0018:ffffc900040579f0 EFLAGS: 00010206 [ 89.767099][ T5854] RAX: 0000000000000005 RBX: ffff888034036d00 RCX: ffff8880299e1e00 [ 89.775061][ T5854] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88802f5fa000 [ 89.783039][ T5854] RBP: 0000000000000001 R08: ffff88802f5fa12f R09: 1ffff11005ebf425 [ 89.790996][ T5854] R10: dffffc0000000000 R11: ffffffff88f08970 R12: 0000000000000028 [ 89.798954][ T5854] R13: dffffc0000000000 R14: ffff88802f5fa000 R15: dffffc0000000000 [ 89.806919][ T5854] FS: 0000555567b87380(0000) GS:ffff888125798000(0000) knlGS:0000000000000000 [ 89.815834][ T5854] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.822504][ T5854] CR2: 0000558ce9089000 CR3: 0000000076e8e000 CR4: 00000000003526f0 [ 89.830467][ T5854] Call Trace: [ 89.833735][ T5854] [ 89.836656][ T5854] pcl818_detach+0x66/0xd0 [ 89.841093][ T5854] comedi_device_detach+0x134/0x720 [ 89.846296][ T5854] comedi_device_attach+0x568/0x670 [ 89.851831][ T5854] comedi_unlocked_ioctl+0x686/0xf40 [ 89.857119][ T5854] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 89.863180][ T5854] ? _raw_spin_lock_irq+0xae/0xf0 [ 89.868224][ T5854] ? __pfx_ptrace_notify+0x10/0x10 [ 89.873340][ T5854] ? bpf_lsm_file_ioctl+0x9/0x20 [ 89.878352][ T5854] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 89.884166][ T5854] __se_sys_ioctl+0xfc/0x170 [ 89.888749][ T5854] do_syscall_64+0xfa/0x3b0 [ 89.893238][ T5854] ? lockdep_hardirqs_on+0x9c/0x150 [ 89.898423][ T5854] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.904584][ T5854] ? clear_bhb_loop+0x60/0xb0 [ 89.909357][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.915426][ T5854] RIP: 0033:0x7f9061dee3e9 [ 89.919837][ 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 [ 89.939609][ T5854] RSP: 002b:00007fffab61eeb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 89.948031][ T5854] RAX: ffffffffffffffda RBX: 00007fffab61f088 RCX: 00007f9061dee3e9 [ 89.956091][ T5854] RDX: 0000200000000140 RSI: 0000000040946400 RDI: 0000000000000003 [ 89.964046][ T5854] RBP: 00007f9061e61610 R08: 0000000000000000 R09: 00007fffab61f088 [ 89.972088][ T5854] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 89.980046][ T5854] R13: 00007fffab61f078 R14: 0000000000000001 R15: 0000000000000001 [ 89.988787][ T5854] [ 89.991795][ T5854] Modules linked in: [ 89.996296][ T5854] ---[ end trace 0000000000000000 ]--- [ 90.002196][ T5854] RIP: 0010:pcl818_ai_cancel+0x69/0x3f0 [ 90.007827][ 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 [ 90.027517][ T5854] RSP: 0018:ffffc900040579f0 EFLAGS: 00010206 [ 90.033620][ T5854] RAX: 0000000000000005 RBX: ffff888034036d00 RCX: ffff8880299e1e00 [ 90.041641][ T5854] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88802f5fa000 [ 90.049642][ T5854] RBP: 0000000000000001 R08: ffff88802f5fa12f R09: 1ffff11005ebf425 [ 90.057621][ T5854] R10: dffffc0000000000 R11: ffffffff88f08970 R12: 0000000000000028 [ 90.065631][ T5854] R13: dffffc0000000000 R14: ffff88802f5fa000 R15: dffffc0000000000 [ 90.073629][ T5854] FS: 0000555567b87380(0000) GS:ffff888125898000(0000) knlGS:0000000000000000 [ 90.082582][ T5854] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.089175][ T5854] CR2: 00000000005fdeb8 CR3: 0000000076e8e000 CR4: 00000000003526f0 [ 90.097184][ T5854] Kernel panic - not syncing: Fatal exception [ 90.103595][ T5854] Kernel Offset: disabled [ 90.107917][ T5854] Rebooting in 86400 seconds..