./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3990317590 <...> [ 92.002633][ T850] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.67' (ED25519) to the list of known hosts. execve("./syz-executor3990317590", ["./syz-executor3990317590"], 0x7ffd93ae3630 /* 10 vars */) = 0 brk(NULL) = 0x555594f7b000 brk(0x555594f7bd00) = 0x555594f7bd00 arch_prctl(ARCH_SET_FS, 0x555594f7b380) = 0 set_tid_address(0x555594f7b650) = 5862 set_robust_list(0x555594f7b660, 24) = 0 rseq(0x555594f7bca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3990317590", 4096) = 28 getrandom("\x9d\x20\x37\x9d\x68\x77\x4a\x55", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555594f7bd00 brk(0x555594f9cd00) = 0x555594f9cd00 brk(0x555594f9d000) = 0x555594f9d000 mprotect(0x7fd300c6b000, 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 [ 93.798130][ T5862] ------------[ cut here ]------------ [ 93.804185][ T5862] UBSAN: shift-out-of-bounds in drivers/comedi/drivers/pcl812.c:1152:10 [ 93.814628][ T5862] shift exponent 8550 is too large for 32-bit type 'int' [ 93.821832][ T5862] CPU: 0 UID: 0 PID: 5862 Comm: syz-executor399 Not tainted 6.16.0-rc5-next-20250708-syzkaller #0 PREEMPT(full) [ 93.821858][ T5862] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 93.821880][ T5862] Call Trace: [ 93.821887][ T5862] [ 93.821896][ T5862] dump_stack_lvl+0x189/0x250 [ 93.821950][ T5862] ? __pfx_dump_stack_lvl+0x10/0x10 [ 93.821979][ T5862] ? __pfx__printk+0x10/0x10 [ 93.822021][ T5862] ubsan_epilogue+0xa/0x40 [ 93.822043][ T5862] __ubsan_handle_shift_out_of_bounds+0x386/0x410 [ 93.822098][ T5862] pcl812_attach+0x1b9e/0x2300 [ 93.822142][ T5862] comedi_device_attach+0x51d/0x670 [ 93.822174][ T5862] comedi_unlocked_ioctl+0x686/0xf40 [ 93.822216][ T5862] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 93.822269][ T5862] ? _raw_spin_lock_irq+0xae/0xf0 [ 93.822327][ T5862] ? __pfx_ptrace_notify+0x10/0x10 [ 93.822366][ T5862] ? bpf_lsm_file_ioctl+0x9/0x20 [ 93.822395][ T5862] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 93.822433][ T5862] __se_sys_ioctl+0xf9/0x170 [ 93.822468][ T5862] do_syscall_64+0xfa/0x3b0 [ 93.822493][ T5862] ? lockdep_hardirqs_on+0x9c/0x150 [ 93.822516][ T5862] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 93.822537][ T5862] ? clear_bhb_loop+0x60/0xb0 [ 93.822571][ T5862] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 93.822593][ T5862] RIP: 0033:0x7fd300bf83e9 [ 93.822617][ T5862] 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 [ 93.822634][ T5862] RSP: 002b:00007fff39d4ae58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 93.822656][ T5862] RAX: ffffffffffffffda RBX: 00007fff39d4b028 RCX: 00007fd300bf83e9 [ 93.822672][ T5862] RDX: 0000200000000140 RSI: 0000000040946400 RDI: 0000000000000003 [ 93.822686][ T5862] RBP: 00007fd300c6b610 R08: 0000000000000000 R09: 00007fff39d4b028 [ 93.822700][ T5862] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 93.822712][ T5862] R13: 00007fff39d4b018 R14: 0000000000000001 R15: 0000000000000001 [ 93.822744][ T5862] [ 93.822752][ T5862] ---[ end trace ]--- [ 94.029221][ T5862] Kernel panic - not syncing: UBSAN: panic_on_warn set ... [ 94.036424][ T5862] CPU: 0 UID: 0 PID: 5862 Comm: syz-executor399 Not tainted 6.16.0-rc5-next-20250708-syzkaller #0 PREEMPT(full) [ 94.048315][ T5862] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 94.058381][ T5862] Call Trace: [ 94.061663][ T5862] [ 94.064593][ T5862] dump_stack_lvl+0x99/0x250 [ 94.069195][ T5862] ? __asan_memcpy+0x40/0x70 [ 94.073795][ T5862] ? __pfx_dump_stack_lvl+0x10/0x10 [ 94.079003][ T5862] ? __pfx__printk+0x10/0x10 [ 94.083635][ T5862] panic+0x2e2/0x7b0 [ 94.087577][ T5862] ? __pfx_panic+0x10/0x10 [ 94.092017][ T5862] ? _printk+0xcf/0x120 [ 94.096202][ T5862] ? __pfx__printk+0x10/0x10 [ 94.100832][ T5862] check_panic_on_warn+0x89/0xb0 [ 94.105804][ T5862] __ubsan_handle_shift_out_of_bounds+0x386/0x410 [ 94.112263][ T5862] pcl812_attach+0x1b9e/0x2300 [ 94.117075][ T5862] comedi_device_attach+0x51d/0x670 [ 94.122310][ T5862] comedi_unlocked_ioctl+0x686/0xf40 [ 94.127636][ T5862] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 94.133500][ T5862] ? _raw_spin_lock_irq+0xae/0xf0 [ 94.138585][ T5862] ? __pfx_ptrace_notify+0x10/0x10 [ 94.143723][ T5862] ? bpf_lsm_file_ioctl+0x9/0x20 [ 94.148682][ T5862] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 94.154508][ T5862] __se_sys_ioctl+0xf9/0x170 [ 94.159133][ T5862] do_syscall_64+0xfa/0x3b0 [ 94.163654][ T5862] ? lockdep_hardirqs_on+0x9c/0x150 [ 94.168862][ T5862] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.174939][ T5862] ? clear_bhb_loop+0x60/0xb0 [ 94.179630][ T5862] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.185537][ T5862] RIP: 0033:0x7fd300bf83e9 [ 94.189971][ T5862] 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 [ 94.209589][ T5862] RSP: 002b:00007fff39d4ae58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 94.218017][ T5862] RAX: ffffffffffffffda RBX: 00007fff39d4b028 RCX: 00007fd300bf83e9 [ 94.226002][ T5862] RDX: 0000200000000140 RSI: 0000000040946400 RDI: 0000000000000003 [ 94.233985][ T5862] RBP: 00007fd300c6b610 R08: 0000000000000000 R09: 00007fff39d4b028 [ 94.241967][ T5862] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 94.249958][ T5862] R13: 00007fff39d4b018 R14: 0000000000000001 R15: 0000000000000001 [ 94.257967][ T5862] [ 94.261316][ T5862] Kernel Offset: disabled [ 94.265679][ T5862] Rebooting in 86400 seconds..