./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor855309254
<...>
Warning: Permanently added '10.128.0.135' (ED25519) to the list of known hosts.
execve("./syz-executor855309254", ["./syz-executor855309254"], 0x7ffc38899470 /* 10 vars */) = 0
brk(NULL) = 0x555564d5b000
brk(0x555564d5bd00) = 0x555564d5bd00
arch_prctl(ARCH_SET_FS, 0x555564d5b380) = 0
set_tid_address(0x555564d5b650) = 5854
set_robust_list(0x555564d5b660, 24) = 0
rseq(0x555564d5bca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor855309254", 4096) = 27
getrandom("\xc9\xfa\x85\x22\x72\x6b\x12\xb5", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x555564d5bd00
brk(0x555564d7cd00) = 0x555564d7cd00
brk(0x555564d7d000) = 0x555564d7d000
mprotect(0x7f8e89f19000, 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/comedi1", O_RDONLY|O_EXCL|O_NOCTTY|FASYNC) = 3
[ 75.479141][ T5854] ------------[ cut here ]------------
[ 75.485381][ T5854] UBSAN: shift-out-of-bounds in drivers/comedi/drivers/pcl812.c:1152:10
[ 75.495251][ T5854] shift exponent 8388613 is too large for 32-bit type 'int'
[ 75.502670][ T5854] CPU: 1 UID: 0 PID: 5854 Comm: syz-executor855 Not tainted 6.16.0-rc6-next-20250714-syzkaller #0 PREEMPT(full)
[ 75.502685][ T5854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 75.502696][ T5854] Call Trace:
[ 75.502704][ T5854]
[ 75.502709][ T5854] dump_stack_lvl+0x189/0x250
[ 75.502739][ T5854] ? __pfx_dump_stack_lvl+0x10/0x10
[ 75.502751][ T5854] ? __pfx__printk+0x10/0x10
[ 75.502771][ T5854] ubsan_epilogue+0xa/0x40
[ 75.502781][ T5854] __ubsan_handle_shift_out_of_bounds+0x386/0x410
[ 75.502808][ T5854] pcl812_attach+0x1b9e/0x2300
[ 75.502836][ T5854] comedi_device_attach+0x51d/0x670
[ 75.502854][ T5854] comedi_unlocked_ioctl+0x686/0xf40
[ 75.502871][ T5854] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 75.502893][ T5854] ? _raw_spin_lock_irq+0xae/0xf0
[ 75.502926][ T5854] ? __pfx_ptrace_notify+0x10/0x10
[ 75.502943][ T5854] ? bpf_lsm_file_ioctl+0x9/0x20
[ 75.502956][ T5854] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 75.502968][ T5854] __se_sys_ioctl+0xfc/0x170
[ 75.502979][ T5854] do_syscall_64+0xfa/0x3b0
[ 75.502990][ T5854] ? lockdep_hardirqs_on+0x9c/0x150
[ 75.503000][ T5854] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 75.503009][ T5854] ? clear_bhb_loop+0x60/0xb0
[ 75.503021][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 75.503030][ T5854] RIP: 0033:0x7f8e89ea63e9
[ 75.503044][ 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
[ 75.503051][ T5854] RSP: 002b:00007fffe70f7c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 75.503062][ T5854] RAX: ffffffffffffffda RBX: 00007fffe70f7e08 RCX: 00007f8e89ea63e9
[ 75.503069][ T5854] RDX: 0000200000000280 RSI: 0000000040946400 RDI: 0000000000000003
[ 75.503074][ T5854] RBP: 00007f8e89f19610 R08: 0000000000000000 R09: 00007fffe70f7e08
[ 75.503080][ T5854] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 75.503085][ T5854] R13: 00007fffe70f7df8 R14: 0000000000000001 R15: 0000000000000001
[ 75.503100][ T5854]
[ 75.503103][ T5854] ---[ end trace ]---
[ 75.709655][ T5854] Kernel panic - not syncing: UBSAN: panic_on_warn set ...
[ 75.716866][ T5854] CPU: 1 UID: 0 PID: 5854 Comm: syz-executor855 Not tainted 6.16.0-rc6-next-20250714-syzkaller #0 PREEMPT(full)
[ 75.728845][ T5854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 75.738978][ T5854] Call Trace:
[ 75.742446][ T5854]
[ 75.745554][ T5854] dump_stack_lvl+0x99/0x250
[ 75.750145][ T5854] ? __asan_memcpy+0x40/0x70
[ 75.754898][ T5854] ? __pfx_dump_stack_lvl+0x10/0x10
[ 75.760225][ T5854] ? __pfx__printk+0x10/0x10
[ 75.764915][ T5854] vpanic+0x281/0x750
[ 75.768972][ T5854] ? __pfx_vpanic+0x10/0x10
[ 75.773463][ T5854] panic+0xb9/0xc0
[ 75.777181][ T5854] ? __pfx_panic+0x10/0x10
[ 75.781771][ T5854] ? __pfx__printk+0x10/0x10
[ 75.786352][ T5854] check_panic_on_warn+0x89/0xb0
[ 75.791287][ T5854] __ubsan_handle_shift_out_of_bounds+0x386/0x410
[ 75.797790][ T5854] pcl812_attach+0x1b9e/0x2300
[ 75.802557][ T5854] comedi_device_attach+0x51d/0x670
[ 75.807933][ T5854] comedi_unlocked_ioctl+0x686/0xf40
[ 75.813242][ T5854] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 75.819329][ T5854] ? _raw_spin_lock_irq+0xae/0xf0
[ 75.824370][ T5854] ? __pfx_ptrace_notify+0x10/0x10
[ 75.829497][ T5854] ? bpf_lsm_file_ioctl+0x9/0x20
[ 75.834424][ T5854] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 75.840220][ T5854] __se_sys_ioctl+0xfc/0x170
[ 75.844881][ T5854] do_syscall_64+0xfa/0x3b0
[ 75.849456][ T5854] ? lockdep_hardirqs_on+0x9c/0x150
[ 75.854634][ T5854] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 75.860688][ T5854] ? clear_bhb_loop+0x60/0xb0
[ 75.865349][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 75.871220][ T5854] RIP: 0033:0x7f8e89ea63e9
[ 75.875724][ 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
[ 75.895426][ T5854] RSP: 002b:00007fffe70f7c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 75.903845][ T5854] RAX: ffffffffffffffda RBX: 00007fffe70f7e08 RCX: 00007f8e89ea63e9
[ 75.911850][ T5854] RDX: 0000200000000280 RSI: 0000000040946400 RDI: 0000000000000003
[ 75.919924][ T5854] RBP: 00007f8e89f19610 R08: 0000000000000000 R09: 00007fffe70f7e08
[ 75.927978][ T5854] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 75.935993][ T5854] R13: 00007fffe70f7df8 R14: 0000000000000001 R15: 0000000000000001
[ 75.944142][ T5854]
[ 75.947609][ T5854] Kernel Offset: disabled
[ 75.952038][ T5854] Rebooting in 86400 seconds..