./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2968627293
<...>
Warning: Permanently added '10.128.0.86' (ED25519) to the list of known hosts.
execve("./syz-executor2968627293", ["./syz-executor2968627293"], 0x7ffc8a1d18c0 /* 10 vars */) = 0
brk(NULL) = 0x55558bdde000
brk(0x55558bdded00) = 0x55558bdded00
arch_prctl(ARCH_SET_FS, 0x55558bdde380) = 0
set_tid_address(0x55558bdde650) = 5848
set_robust_list(0x55558bdde660, 24) = 0
rseq(0x55558bddeca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor2968627293", 4096) = 28
getrandom("\x9d\x68\xdb\xb3\xe9\x78\x4b\xcf", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55558bdded00
brk(0x55558bdffd00) = 0x55558bdffd00
brk(0x55558be00000) = 0x55558be00000
mprotect(0x7f9a2723c000, 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
write(1, "executing program\n", 18executing program
) = 18
openat(AT_FDCWD, "/dev/comedi3", O_RDONLY|O_APPEND) = 3
[ 89.867887][ T5848] ------------[ cut here ]------------
[ 89.873780][ T5848] UBSAN: shift-out-of-bounds in drivers/comedi/drivers/pcl726.c:331:46
[ 89.882210][ T5848] shift exponent 268435461 is too large for 32-bit type 'int'
[ 89.889805][ T5848] CPU: 1 UID: 0 PID: 5848 Comm: syz-executor296 Not tainted 6.16.0-next-20250731-syzkaller #0 PREEMPT(full)
[ 89.889829][ T5848] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
[ 89.889847][ T5848] Call Trace:
[ 89.889856][ T5848]
[ 89.889863][ T5848] dump_stack_lvl+0x189/0x250
[ 89.889904][ T5848] ? __pfx_dump_stack_lvl+0x10/0x10
[ 89.889926][ T5848] ? __pfx__printk+0x10/0x10
[ 89.889959][ T5848] ubsan_epilogue+0xa/0x40
[ 89.889974][ T5848] __ubsan_handle_shift_out_of_bounds+0x386/0x410
[ 89.890008][ T5848] ? __kmalloc_noprof+0x29b/0x4f0
[ 89.890038][ T5848] pcl726_attach+0xac4/0xd50
[ 89.890074][ T5848] comedi_device_attach+0x51c/0x720
[ 89.890102][ T5848] comedi_unlocked_ioctl+0x5ff/0x1020
[ 89.890126][ T5848] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 89.890158][ T5848] ? _raw_spin_lock_irq+0xae/0xf0
[ 89.890206][ T5848] ? __pfx_ptrace_notify+0x10/0x10
[ 89.890231][ T5848] ? bpf_lsm_file_ioctl+0x9/0x20
[ 89.890253][ T5848] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 89.890269][ T5848] __se_sys_ioctl+0xfc/0x170
[ 89.890296][ T5848] do_syscall_64+0xfa/0x3b0
[ 89.890310][ T5848] ? lockdep_hardirqs_on+0x9c/0x150
[ 89.890332][ T5848] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.890347][ T5848] ? clear_bhb_loop+0x60/0xb0
[ 89.890366][ T5848] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 89.890381][ T5848] RIP: 0033:0x7f9a271c93e9
[ 89.890398][ 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
[ 89.890410][ T5848] RSP: 002b:00007ffd4af12578 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 89.890427][ T5848] RAX: ffffffffffffffda RBX: 00007ffd4af12748 RCX: 00007f9a271c93e9
[ 89.890438][ T5848] RDX: 00002000000000c0 RSI: 0000000040946400 RDI: 0000000000000003
[ 89.890448][ T5848] RBP: 00007f9a2723c610 R08: 0000000000000000 R09: 00007ffd4af12748
[ 89.890458][ T5848] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 89.890467][ T5848] R13: 00007ffd4af12738 R14: 0000000000000001 R15: 0000000000000001
[ 89.890489][ T5848]
[ 89.890494][ T5848] ---[ end trace ]---
[ 90.106635][ T5848] Kernel panic - not syncing: UBSAN: panic_on_warn set ...
[ 90.113836][ T5848] CPU: 1 UID: 0 PID: 5848 Comm: syz-executor296 Not tainted 6.16.0-next-20250731-syzkaller #0 PREEMPT(full)
[ 90.125463][ T5848] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
[ 90.135608][ T5848] Call Trace:
[ 90.138885][ T5848]
[ 90.141816][ T5848] dump_stack_lvl+0x99/0x250
[ 90.146427][ T5848] ? __asan_memcpy+0x40/0x70
[ 90.151021][ T5848] ? __pfx_dump_stack_lvl+0x10/0x10
[ 90.156242][ T5848] ? __pfx__printk+0x10/0x10
[ 90.160866][ T5848] vpanic+0x281/0x750
[ 90.164855][ T5848] ? __pfx_vpanic+0x10/0x10
[ 90.169365][ T5848] panic+0xb9/0xc0
[ 90.173108][ T5848] ? __pfx_panic+0x10/0x10
[ 90.177530][ T5848] ? __pfx__printk+0x10/0x10
[ 90.182146][ T5848] check_panic_on_warn+0x89/0xb0
[ 90.187112][ T5848] __ubsan_handle_shift_out_of_bounds+0x386/0x410
[ 90.193559][ T5848] ? __kmalloc_noprof+0x29b/0x4f0
[ 90.198604][ T5848] pcl726_attach+0xac4/0xd50
[ 90.203224][ T5848] comedi_device_attach+0x51c/0x720
[ 90.208489][ T5848] comedi_unlocked_ioctl+0x5ff/0x1020
[ 90.213981][ T5848] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 90.220253][ T5848] ? _raw_spin_lock_irq+0xae/0xf0
[ 90.225319][ T5848] ? __pfx_ptrace_notify+0x10/0x10
[ 90.230532][ T5848] ? bpf_lsm_file_ioctl+0x9/0x20
[ 90.235482][ T5848] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 90.241290][ T5848] __se_sys_ioctl+0xfc/0x170
[ 90.245898][ T5848] do_syscall_64+0xfa/0x3b0
[ 90.250400][ T5848] ? lockdep_hardirqs_on+0x9c/0x150
[ 90.255695][ T5848] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 90.262283][ T5848] ? clear_bhb_loop+0x60/0xb0
[ 90.266964][ T5848] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 90.272858][ T5848] RIP: 0033:0x7f9a271c93e9
[ 90.277361][ 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
[ 90.297050][ T5848] RSP: 002b:00007ffd4af12578 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 90.305838][ T5848] RAX: ffffffffffffffda RBX: 00007ffd4af12748 RCX: 00007f9a271c93e9
[ 90.313807][ T5848] RDX: 00002000000000c0 RSI: 0000000040946400 RDI: 0000000000000003
[ 90.321788][ T5848] RBP: 00007f9a2723c610 R08: 0000000000000000 R09: 00007ffd4af12748
[ 90.329770][ T5848] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 90.337828][ T5848] R13: 00007ffd4af12738 R14: 0000000000000001 R15: 0000000000000001
[ 90.346022][ T5848]
[ 90.349358][ T5848] Kernel Offset: disabled
[ 90.353774][ T5848] Rebooting in 86400 seconds..