./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2441872144
<...>
Warning: Permanently added '10.128.0.230' (ED25519) to the list of known hosts.
execve("./syz-executor2441872144", ["./syz-executor2441872144"], 0x7fff756d7940 /* 10 vars */) = 0
brk(NULL) = 0x55558d64d000
brk(0x55558d64dd00) = 0x55558d64dd00
arch_prctl(ARCH_SET_FS, 0x55558d64d380) = 0
set_tid_address(0x55558d64d650) = 5854
set_robust_list(0x55558d64d660, 24) = 0
rseq(0x55558d64dca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor2441872144", 4096) = 28
getrandom("\x44\xed\x42\x37\x4a\xf8\xa4\xa2", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55558d64dd00
brk(0x55558d66ed00) = 0x55558d66ed00
brk(0x55558d66f000) = 0x55558d66f000
mprotect(0x7efc1f569000, 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|FASYNC) = 3
[ 74.803049][ T5854] ------------[ cut here ]------------
[ 74.808617][ T5854] UBSAN: shift-out-of-bounds in drivers/comedi/drivers/pcl726.c:331:46
[ 74.818094][ T5854] shift exponent -2147450880 is negative
[ 74.823806][ T5854] CPU: 1 UID: 0 PID: 5854 Comm: syz-executor244 Not tainted 6.16.0-rc5-next-20250708-syzkaller #0 PREEMPT(full)
[ 74.823827][ T5854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 74.823843][ T5854] Call Trace:
[ 74.823849][ T5854]
[ 74.823856][ T5854] dump_stack_lvl+0x189/0x250
[ 74.823901][ T5854] ? __pfx_dump_stack_lvl+0x10/0x10
[ 74.823921][ T5854] ? __pfx__printk+0x10/0x10
[ 74.823957][ T5854] ubsan_epilogue+0xa/0x40
[ 74.823975][ T5854] __ubsan_handle_shift_out_of_bounds+0x386/0x410
[ 74.824011][ T5854] ? __kmalloc_noprof+0x29b/0x4f0
[ 74.824047][ T5854] pcl726_attach+0xac4/0xd50
[ 74.824075][ T5854] comedi_device_attach+0x51d/0x670
[ 74.824101][ T5854] comedi_unlocked_ioctl+0x686/0xf40
[ 74.824134][ T5854] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 74.824176][ T5854] ? _raw_spin_lock_irq+0xae/0xf0
[ 74.824225][ T5854] ? __pfx_ptrace_notify+0x10/0x10
[ 74.824254][ T5854] ? bpf_lsm_file_ioctl+0x9/0x20
[ 74.824276][ T5854] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 74.824298][ T5854] __se_sys_ioctl+0xf9/0x170
[ 74.824324][ T5854] do_syscall_64+0xfa/0x3b0
[ 74.824341][ T5854] ? lockdep_hardirqs_on+0x9c/0x150
[ 74.824359][ T5854] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 74.824375][ T5854] ? clear_bhb_loop+0x60/0xb0
[ 74.824396][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 74.824413][ T5854] RIP: 0033:0x7efc1f4f63e9
[ 74.824434][ 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
[ 74.824448][ T5854] RSP: 002b:00007ffee7f74a58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 74.824466][ T5854] RAX: ffffffffffffffda RBX: 00007ffee7f74c28 RCX: 00007efc1f4f63e9
[ 74.824479][ T5854] RDX: 0000200000002b40 RSI: 0000000040946400 RDI: 0000000000000003
[ 74.824490][ T5854] RBP: 00007efc1f569610 R08: 0000000000000000 R09: 00007ffee7f74c28
[ 74.824502][ T5854] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 74.824512][ T5854] R13: 00007ffee7f74c18 R14: 0000000000000001 R15: 0000000000000001
[ 74.824541][ T5854]
[ 74.824548][ T5854] ---[ end trace ]---
[ 75.035298][ T5854] Kernel panic - not syncing: UBSAN: panic_on_warn set ...
[ 75.042482][ T5854] CPU: 1 UID: 0 PID: 5854 Comm: syz-executor244 Not tainted 6.16.0-rc5-next-20250708-syzkaller #0 PREEMPT(full)
[ 75.054362][ T5854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 75.064392][ T5854] Call Trace:
[ 75.067652][ T5854]
[ 75.070563][ T5854] dump_stack_lvl+0x99/0x250
[ 75.075134][ T5854] ? __asan_memcpy+0x40/0x70
[ 75.079703][ T5854] ? __pfx_dump_stack_lvl+0x10/0x10
[ 75.084879][ T5854] ? __pfx__printk+0x10/0x10
[ 75.089800][ T5854] panic+0x2e2/0x7b0
[ 75.093694][ T5854] ? __pfx_panic+0x10/0x10
[ 75.098084][ T5854] ? _printk+0xcf/0x120
[ 75.102217][ T5854] ? __pfx__printk+0x10/0x10
[ 75.106962][ T5854] check_panic_on_warn+0x89/0xb0
[ 75.111875][ T5854] __ubsan_handle_shift_out_of_bounds+0x386/0x410
[ 75.118269][ T5854] ? __kmalloc_noprof+0x29b/0x4f0
[ 75.123278][ T5854] pcl726_attach+0xac4/0xd50
[ 75.127852][ T5854] comedi_device_attach+0x51d/0x670
[ 75.133032][ T5854] comedi_unlocked_ioctl+0x686/0xf40
[ 75.138302][ T5854] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 75.144098][ T5854] ? _raw_spin_lock_irq+0xae/0xf0
[ 75.149121][ T5854] ? __pfx_ptrace_notify+0x10/0x10
[ 75.154214][ T5854] ? bpf_lsm_file_ioctl+0x9/0x20
[ 75.159130][ T5854] ? __pfx_comedi_unlocked_ioctl+0x10/0x10
[ 75.164913][ T5854] __se_sys_ioctl+0xf9/0x170
[ 75.169489][ T5854] do_syscall_64+0xfa/0x3b0
[ 75.173969][ T5854] ? lockdep_hardirqs_on+0x9c/0x150
[ 75.179144][ T5854] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 75.185191][ T5854] ? clear_bhb_loop+0x60/0xb0
[ 75.189848][ T5854] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 75.195715][ T5854] RIP: 0033:0x7efc1f4f63e9
[ 75.200110][ 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
[ 75.219779][ T5854] RSP: 002b:00007ffee7f74a58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 75.228170][ T5854] RAX: ffffffffffffffda RBX: 00007ffee7f74c28 RCX: 00007efc1f4f63e9
[ 75.236118][ T5854] RDX: 0000200000002b40 RSI: 0000000040946400 RDI: 0000000000000003
[ 75.244152][ T5854] RBP: 00007efc1f569610 R08: 0000000000000000 R09: 00007ffee7f74c28
[ 75.252100][ T5854] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 75.260045][ T5854] R13: 00007ffee7f74c18 R14: 0000000000000001 R15: 0000000000000001
[ 75.268001][ T5854]
[ 75.271298][ T5854] Kernel Offset: disabled
[ 75.275636][ T5854] Rebooting in 86400 seconds..