./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3718330629
<...>
Warning: Permanently added '10.128.0.244' (ED25519) to the list of known hosts.
execve("./syz-executor3718330629", ["./syz-executor3718330629"], 0x7fff056fb030 /* 10 vars */) = 0
brk(NULL) = 0x55558c0d9000
brk(0x55558c0d9d00) = 0x55558c0d9d00
arch_prctl(ARCH_SET_FS, 0x55558c0d9380) = 0
set_tid_address(0x55558c0d9650) = 5853
set_robust_list(0x55558c0d9660, 24) = 0
rseq(0x55558c0d9ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3718330629", 4096) = 28
getrandom("\x39\x8d\x2e\x85\xd3\x3e\xa5\x80", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55558c0d9d00
brk(0x55558c0fad00) = 0x55558c0fad00
brk(0x55558c0fb000) = 0x55558c0fb000
mprotect(0x7f6eda57d000, 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
[ 87.451309][ T5853] ------------[ cut here ]------------
[ 87.457417][ T5853] UBSAN: shift-out-of-bounds in drivers/comedi/drivers/pcl812.c:1152:10
[ 87.465880][ T5853] shift exponent 8388613 is too large for 32-bit type 'int'
[ 87.473249][ T5853] CPU: 1 UID: 0 PID: 5853 Comm: syz-executor371 Not tainted 6.16.0-rc6-next-20250714-syzkaller #0 PREEMPT(full)
[ 87.473265][ T5853] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 87.473272][ T5853] Call Trace:
[ 87.473277][ T5853]
[ 87.473282][ T5853] dump_stack_lvl+0x189/0x250
[ 87.473322][ T5853] ? __pfx_dump_stack_lvl+0x10/0x10
[ 87.473337][ T5853] ? __pfx__printk+0x10/0x10
[ 87.473360][ T5853] ubsan_epilogue+0xa/0x40
[ 87.473372][ T5853] __ubsan_handle_shift_out_of_bounds+0x386/0x410
[ 87.473405][ T5853] pcl812_attach+0x1b9e/0x2300
[ 87.473438][ T5853] comedi_device_attach+0x51d/0x670
[ 87.473460][ T5853] comedi_unlocked_ioctl+0x686/0xf40
[ 87.473480][ T5853] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 87.473505][ T5853] ? _raw_spin_lock_irq+0xae/0xf0
[ 87.473545][ T5853] ? __pfx_ptrace_notify+0x10/0x10
[ 87.473565][ T5853] ? bpf_lsm_file_ioctl+0x9/0x20
[ 87.473580][ T5853] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 87.473594][ T5853] __se_sys_ioctl+0xfc/0x170
[ 87.473607][ T5853] do_syscall_64+0xfa/0x3b0
[ 87.473620][ T5853] ? lockdep_hardirqs_on+0x9c/0x150
[ 87.473631][ T5853] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.473641][ T5853] ? clear_bhb_loop+0x60/0xb0
[ 87.473655][ T5853] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.473665][ T5853] RIP: 0033:0x7f6eda50a3e9
[ 87.473676][ T5853] 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
[ 87.473685][ T5853] RSP: 002b:00007fff8ae446d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 87.473698][ T5853] RAX: ffffffffffffffda RBX: 00007fff8ae448a8 RCX: 00007f6eda50a3e9
[ 87.473705][ T5853] RDX: 0000200000000280 RSI: 0000000040946400 RDI: 0000000000000003
[ 87.473712][ T5853] RBP: 00007f6eda57d610 R08: 0000000000000000 R09: 00007fff8ae448a8
[ 87.473719][ T5853] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 87.473726][ T5853] R13: 00007fff8ae44898 R14: 0000000000000001 R15: 0000000000000001
[ 87.473743][ T5853]
[ 87.473747][ T5853] ---[ end trace ]---
[ 87.680668][ T5853] Kernel panic - not syncing: UBSAN: panic_on_warn set ...
[ 87.687852][ T5853] CPU: 1 UID: 0 PID: 5853 Comm: syz-executor371 Not tainted 6.16.0-rc6-next-20250714-syzkaller #0 PREEMPT(full)
[ 87.700510][ T5853] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 87.710551][ T5853] Call Trace:
[ 87.713821][ T5853]
[ 87.716743][ T5853] dump_stack_lvl+0x99/0x250
[ 87.721330][ T5853] ? __asan_memcpy+0x40/0x70
[ 87.725928][ T5853] ? __pfx_dump_stack_lvl+0x10/0x10
[ 87.731117][ T5853] ? __pfx__printk+0x10/0x10
[ 87.735704][ T5853] vpanic+0x281/0x750
[ 87.739851][ T5853] ? __pfx_vpanic+0x10/0x10
[ 87.744352][ T5853] panic+0xb9/0xc0
[ 87.748063][ T5853] ? __pfx_panic+0x10/0x10
[ 87.752475][ T5853] ? __pfx__printk+0x10/0x10
[ 87.757074][ T5853] check_panic_on_warn+0x89/0xb0
[ 87.762094][ T5853] __ubsan_handle_shift_out_of_bounds+0x386/0x410
[ 87.768685][ T5853] pcl812_attach+0x1b9e/0x2300
[ 87.773451][ T5853] comedi_device_attach+0x51d/0x670
[ 87.778661][ T5853] comedi_unlocked_ioctl+0x686/0xf40
[ 87.783945][ T5853] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 87.789764][ T5853] ? _raw_spin_lock_irq+0xae/0xf0
[ 87.794800][ T5853] ? __pfx_ptrace_notify+0x10/0x10
[ 87.799911][ T5853] ? bpf_lsm_file_ioctl+0x9/0x20
[ 87.804840][ T5853] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 87.810638][ T5853] __se_sys_ioctl+0xfc/0x170
[ 87.815220][ T5853] do_syscall_64+0xfa/0x3b0
[ 87.819710][ T5853] ? lockdep_hardirqs_on+0x9c/0x150
[ 87.825271][ T5853] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.831327][ T5853] ? clear_bhb_loop+0x60/0xb0
[ 87.835993][ T5853] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.841870][ T5853] RIP: 0033:0x7f6eda50a3e9
[ 87.846276][ T5853] 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
[ 87.865887][ T5853] RSP: 002b:00007fff8ae446d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 87.874289][ T5853] RAX: ffffffffffffffda RBX: 00007fff8ae448a8 RCX: 00007f6eda50a3e9
[ 87.882251][ T5853] RDX: 0000200000000280 RSI: 0000000040946400 RDI: 0000000000000003
[ 87.890262][ T5853] RBP: 00007f6eda57d610 R08: 0000000000000000 R09: 00007fff8ae448a8
[ 87.898221][ T5853] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 87.906180][ T5853] R13: 00007fff8ae44898 R14: 0000000000000001 R15: 0000000000000001
[ 87.914153][ T5853]
[ 87.917494][ T5853] Kernel Offset: disabled
[ 87.921842][ T5853] Rebooting in 86400 seconds..