./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor329795620
<...>
Warning: Permanently added '10.128.1.120' (ED25519) to the list of known hosts.
execve("./syz-executor329795620", ["./syz-executor329795620"], 0x7ffcaf42e230 /* 10 vars */) = 0
brk(NULL) = 0x55558b7f5000
brk(0x55558b7f5d00) = 0x55558b7f5d00
arch_prctl(ARCH_SET_FS, 0x55558b7f5380) = 0
set_tid_address(0x55558b7f5650) = 5865
set_robust_list(0x55558b7f5660, 24) = 0
rseq(0x55558b7f5ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor329795620", 4096) = 27
getrandom("\x2b\xcb\x91\xc5\xf4\x7b\x15\xc2", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55558b7f5d00
brk(0x55558b816d00) = 0x55558b816d00
brk(0x55558b817000) = 0x55558b817000
mprotect(0x7f227008f000, 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
mkdir("./file0", 000) = 0
pipe2([3, 4], 0) = 0
write(4, "\x15\x00\x00\x00\x65\xff\xff\x00\x10\x00\x00\x08\x00\x39\x50\x32\x30\x30\x30\x00\x00", 21) = 21
dup(4) = 5
write(5, "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 24) = 24
[ 71.466103][ T5865] ------------[ cut here ]------------
[ 71.471754][ T5865] UBSAN: shift-out-of-bounds in fs/9p/vfs_super.c:57:22
[ 71.478867][ T5865] shift exponent 32 is too large for 32-bit type 'int'
[ 71.485784][ T5865] CPU: 1 UID: 0 PID: 5865 Comm: syz-executor329 Not tainted 6.17.0-rc2-next-20250818-syzkaller #0 PREEMPT(full)
[ 71.485807][ T5865] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
[ 71.485816][ T5865] Call Trace:
[ 71.485824][ T5865]
[ 71.485830][ T5865] dump_stack_lvl+0x189/0x250
[ 71.485858][ T5865] ? __pfx_dump_stack_lvl+0x10/0x10
[ 71.485879][ T5865] ? __pfx__printk+0x10/0x10
[ 71.485903][ T5865] ubsan_epilogue+0xa/0x40
[ 71.485920][ T5865] __ubsan_handle_shift_out_of_bounds+0x386/0x410
[ 71.485943][ T5865] ? __pfx_v9fs_set_super+0x10/0x10
[ 71.485964][ T5865] v9fs_get_tree+0x957/0xa90
[ 71.486003][ T5865] ? __pfx_v9fs_get_tree+0x10/0x10
[ 71.486026][ T5865] vfs_get_tree+0x8f/0x2b0
[ 71.486046][ T5865] do_new_mount+0x2a2/0xa30
[ 71.486066][ T5865] ? ns_capable+0x8a/0xf0
[ 71.486085][ T5865] ? __pfx_do_new_mount+0x10/0x10
[ 71.486104][ T5865] ? path_mount+0x61c/0xfe0
[ 71.486123][ T5865] ? user_path_at+0x44/0x60
[ 71.486140][ T5865] __se_sys_mount+0x317/0x410
[ 71.486162][ T5865] ? __pfx___se_sys_mount+0x10/0x10
[ 71.486184][ T5865] ? __x64_sys_mount+0x20/0xc0
[ 71.486203][ T5865] do_syscall_64+0xfa/0x3b0
[ 71.486223][ T5865] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 71.486237][ T5865] ? clear_bhb_loop+0x60/0xb0
[ 71.486253][ T5865] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 71.486267][ T5865] RIP: 0033:0x7f227001c6a9
[ 71.486293][ T5865] 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
[ 71.486305][ T5865] RSP: 002b:00007fff8ae04f98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 71.486320][ T5865] RAX: ffffffffffffffda RBX: 00002000000025c0 RCX: 00007f227001c6a9
[ 71.486330][ T5865] RDX: 00002000000000c0 RSI: 00002000000025c0 RDI: 0000000000000000
[ 71.486340][ T5865] RBP: 0000200000000280 R08: 0000200000000280 R09: 00007fff8ae05178
[ 71.486350][ T5865] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2270065017
[ 71.486359][ T5865] R13: 00007fff8ae05168 R14: 0000000000000001 R15: 0000000000000001
[ 71.486373][ T5865]
[ 71.486378][ T5865] ---[ end trace ]---
[ 71.698485][ T5865] Kernel panic - not syncing: UBSAN: panic_on_warn set ...
[ 71.705692][ T5865] CPU: 0 UID: 0 PID: 5865 Comm: syz-executor329 Not tainted 6.17.0-rc2-next-20250818-syzkaller #0 PREEMPT(full)
[ 71.717684][ T5865] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
[ 71.727741][ T5865] Call Trace:
[ 71.731021][ T5865]
[ 71.733971][ T5865] dump_stack_lvl+0x99/0x250
[ 71.738566][ T5865] ? __asan_memcpy+0x40/0x70
[ 71.743158][ T5865] ? __pfx_dump_stack_lvl+0x10/0x10
[ 71.748441][ T5865] ? __pfx__printk+0x10/0x10
[ 71.753037][ T5865] vpanic+0x281/0x750
[ 71.757019][ T5865] ? __pfx_vpanic+0x10/0x10
[ 71.761525][ T5865] panic+0xb9/0xc0
[ 71.765246][ T5865] ? __pfx_panic+0x10/0x10
[ 71.769667][ T5865] ? __pfx__printk+0x10/0x10
[ 71.774284][ T5865] check_panic_on_warn+0x89/0xb0
[ 71.779237][ T5865] __ubsan_handle_shift_out_of_bounds+0x386/0x410
[ 71.785686][ T5865] ? __pfx_v9fs_set_super+0x10/0x10
[ 71.790922][ T5865] v9fs_get_tree+0x957/0xa90
[ 71.795528][ T5865] ? __pfx_v9fs_get_tree+0x10/0x10
[ 71.800658][ T5865] vfs_get_tree+0x8f/0x2b0
[ 71.805087][ T5865] do_new_mount+0x2a2/0xa30
[ 71.809604][ T5865] ? ns_capable+0x8a/0xf0
[ 71.813952][ T5865] ? __pfx_do_new_mount+0x10/0x10
[ 71.818977][ T5865] ? path_mount+0x61c/0xfe0
[ 71.823572][ T5865] ? user_path_at+0x44/0x60
[ 71.828075][ T5865] __se_sys_mount+0x317/0x410
[ 71.832754][ T5865] ? __pfx___se_sys_mount+0x10/0x10
[ 71.837967][ T5865] ? __x64_sys_mount+0x20/0xc0
[ 71.842732][ T5865] do_syscall_64+0xfa/0x3b0
[ 71.847239][ T5865] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 71.853310][ T5865] ? clear_bhb_loop+0x60/0xb0
[ 71.858008][ T5865] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 71.864099][ T5865] RIP: 0033:0x7f227001c6a9
[ 71.868520][ T5865] 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
[ 71.888130][ T5865] RSP: 002b:00007fff8ae04f98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 71.896568][ T5865] RAX: ffffffffffffffda RBX: 00002000000025c0 RCX: 00007f227001c6a9
[ 71.904535][ T5865] RDX: 00002000000000c0 RSI: 00002000000025c0 RDI: 0000000000000000
[ 71.912504][ T5865] RBP: 0000200000000280 R08: 0000200000000280 R09: 00007fff8ae05178
[ 71.920470][ T5865] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2270065017
[ 71.928626][ T5865] R13: 00007fff8ae05168 R14: 0000000000000001 R15: 0000000000000001
[ 71.936614][ T5865]
[ 71.944795][ T5865] Kernel Offset: disabled
[ 71.949239][ T5865] Rebooting in 86400 seconds..