./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1668546501 <...> Warning: Permanently added '10.128.0.5' (ED25519) to the list of known hosts. execve("./syz-executor1668546501", ["./syz-executor1668546501"], 0x7ffd0f7669e0 /* 10 vars */) = 0 brk(NULL) = 0x55558a426000 brk(0x55558a426d00) = 0x55558a426d00 arch_prctl(ARCH_SET_FS, 0x55558a426380) = 0 set_tid_address(0x55558a426650) = 5856 set_robust_list(0x55558a426660, 24) = 0 rseq(0x55558a426ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1668546501", 4096) = 28 getrandom("\x52\xd7\xe3\x42\xdb\x00\x49\x57", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558a426d00 brk(0x55558a447d00) = 0x55558a447d00 brk(0x55558a448000) = 0x55558a448000 mprotect(0x7f18a007b000, 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5857 attached [pid 5857] set_robust_list(0x55558a426660, 24 [pid 5856] <... clone resumed>, child_tidptr=0x55558a426650) = 5857 [pid 5857] <... set_robust_list resumed>) = 0 [pid 5857] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5857] setpgid(0, 0) = 0 [pid 5857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5857] write(3, "1000", 4) = 4 [pid 5857] close(3) = 0 executing program [pid 5857] write(1, "executing program\n", 18) = 18 [pid 5857] openat(AT_FDCWD, "/dev/comedi0", O_RDONLY|O_NONBLOCK) = 3 [ 73.833870][ T5857] ------------[ cut here ]------------ [ 73.839508][ T5857] UBSAN: shift-out-of-bounds in drivers/comedi/drivers/das16m1.c:525:9 [ 73.848113][ T5857] shift exponent 67108867 is too large for 32-bit type 'int' [ 73.855507][ T5857] CPU: 0 UID: 0 PID: 5857 Comm: syz-executor166 Not tainted 6.16.0-rc5-next-20250708-syzkaller #0 PREEMPT(full) [ 73.855527][ T5857] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 73.855541][ T5857] Call Trace: [ 73.855548][ T5857] [ 73.855553][ T5857] dump_stack_lvl+0x189/0x250 [ 73.855592][ T5857] ? __pfx_dump_stack_lvl+0x10/0x10 [ 73.855610][ T5857] ? __pfx__printk+0x10/0x10 [ 73.855653][ T5857] ubsan_epilogue+0xa/0x40 [ 73.855668][ T5857] __ubsan_handle_shift_out_of_bounds+0x386/0x410 [ 73.855699][ T5857] ? __comedi_request_region+0x74/0x140 [ 73.855716][ T5857] das16m1_attach+0x8ee/0xb20 [ 73.855740][ T5857] comedi_device_attach+0x51d/0x670 [ 73.855760][ T5857] comedi_unlocked_ioctl+0x686/0xf40 [ 73.855787][ T5857] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 73.855821][ T5857] ? _raw_spin_lock_irq+0xae/0xf0 [ 73.855863][ T5857] ? __pfx_ptrace_notify+0x10/0x10 [ 73.855892][ T5857] ? bpf_lsm_file_ioctl+0x9/0x20 [ 73.855910][ T5857] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 73.855928][ T5857] __se_sys_ioctl+0xf9/0x170 [ 73.855950][ T5857] do_syscall_64+0xfa/0x3b0 [ 73.855965][ T5857] ? lockdep_hardirqs_on+0x9c/0x150 [ 73.855979][ T5857] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 73.855997][ T5857] ? clear_bhb_loop+0x60/0xb0 [ 73.856016][ T5857] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 73.856030][ T5857] RIP: 0033:0x7f18a0008b39 [ 73.856047][ T5857] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 [ 73.856057][ T5857] RSP: 002b:00007ffcdf02ed48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 73.856072][ T5857] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f18a0008b39 [ 73.856082][ T5857] RDX: 0000200000000080 RSI: 0000000040946400 RDI: 0000000000000003 [ 73.856091][ T5857] RBP: 00007f18a007b5f0 R08: 0000000000000000 R09: 0000000000000006 [ 73.856099][ T5857] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 73.856107][ T5857] R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 [ 73.856129][ T5857] [ 74.063989][ T5857] ---[ end trace ]--- [ 74.068143][ T5857] Kernel panic - not syncing: UBSAN: panic_on_warn set ... [ 74.075320][ T5857] CPU: 1 UID: 0 PID: 5857 Comm: syz-executor166 Not tainted 6.16.0-rc5-next-20250708-syzkaller #0 PREEMPT(full) [ 74.087185][ T5857] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 74.097220][ T5857] Call Trace: [ 74.100485][ T5857] [ 74.103395][ T5857] dump_stack_lvl+0x99/0x250 [ 74.107967][ T5857] ? __asan_memcpy+0x40/0x70 [ 74.112537][ T5857] ? __pfx_dump_stack_lvl+0x10/0x10 [ 74.117712][ T5857] ? __pfx__printk+0x10/0x10 [ 74.122294][ T5857] panic+0x2e2/0x7b0 [ 74.126340][ T5857] ? __pfx_panic+0x10/0x10 [ 74.130740][ T5857] ? _printk+0xcf/0x120 [ 74.134889][ T5857] ? __pfx__printk+0x10/0x10 [ 74.139471][ T5857] check_panic_on_warn+0x89/0xb0 [ 74.144398][ T5857] __ubsan_handle_shift_out_of_bounds+0x386/0x410 [ 74.150812][ T5857] ? __comedi_request_region+0x74/0x140 [ 74.156351][ T5857] das16m1_attach+0x8ee/0xb20 [ 74.161030][ T5857] comedi_device_attach+0x51d/0x670 [ 74.166209][ T5857] comedi_unlocked_ioctl+0x686/0xf40 [ 74.171482][ T5857] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 74.177281][ T5857] ? _raw_spin_lock_irq+0xae/0xf0 [ 74.182296][ T5857] ? __pfx_ptrace_notify+0x10/0x10 [ 74.187389][ T5857] ? bpf_lsm_file_ioctl+0x9/0x20 [ 74.192310][ T5857] ? __pfx_comedi_unlocked_ioctl+0x10/0x10 [ 74.198095][ T5857] __se_sys_ioctl+0xf9/0x170 [ 74.202668][ T5857] do_syscall_64+0xfa/0x3b0 [ 74.207148][ T5857] ? lockdep_hardirqs_on+0x9c/0x150 [ 74.212318][ T5857] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.218359][ T5857] ? clear_bhb_loop+0x60/0xb0 [ 74.223011][ T5857] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.228885][ T5857] RIP: 0033:0x7f18a0008b39 [ 74.233277][ T5857] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 [ 74.252854][ T5857] RSP: 002b:00007ffcdf02ed48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 74.261242][ T5857] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f18a0008b39 [ 74.269449][ T5857] RDX: 0000200000000080 RSI: 0000000040946400 RDI: 0000000000000003 [ 74.277392][ T5857] RBP: 00007f18a007b5f0 R08: 0000000000000000 R09: 0000000000000006 [ 74.285336][ T5857] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 74.293279][ T5857] R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 [ 74.301233][ T5857] [ 74.304553][ T5857] Kernel Offset: disabled [ 74.308887][ T5857] Rebooting in 86400 seconds..