./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2908405548
<...>
Warning: Permanently added '10.128.0.131' (ED25519) to the list of known hosts.
execve("./syz-executor2908405548", ["./syz-executor2908405548"], 0x7ffeb8d1aa30 /* 10 vars */) = 0
brk(NULL) = 0x55555f624000
brk(0x55555f624d00) = 0x55555f624d00
arch_prctl(ARCH_SET_FS, 0x55555f624380) = 0
set_tid_address(0x55555f624650) = 5063
set_robust_list(0x55555f624660, 24) = 0
rseq(0x55555f624ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor2908405548", 4096) = 28
getrandom("\x2f\x08\x55\x3c\x84\xda\xa1\x0b", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55555f624d00
brk(0x55555f645d00) = 0x55555f645d00
brk(0x55555f646000) = 0x55555f646000
mprotect(0x7fa035770000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
memfd_create("syzkaller", 0) = 3
mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fa02d200000
write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576
munmap(0x7fa02d200000, 138412032) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
ioctl(4, LOOP_SET_FD, 3) = 0
close(3) = 0
close(4) = 0
mkdir("./file0", 0777) = 0
[ 72.681326][ T5063] loop0: detected capacity change from 0 to 2048
mount("/dev/loop0", "./file0", "nilfs2", MS_NOATIME|MS_NODIRATIME|MS_RELATIME|MS_LAZYTIME, "") = 0
openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
chdir("./file0") = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
openat(AT_FDCWD, ".", O_RDONLY) = 4
[ 72.733423][ T5065] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
[ 72.773478][ T5063] ------------[ cut here ]------------
[ 72.780364][ T5063] UBSAN: array-index-out-of-bounds in fs/nilfs2/dir.c:257:18
[ 72.788629][ T5063] index 15 is out of range for type 'unsigned char[15]'
[ 72.796459][ T5063] CPU: 1 PID: 5063 Comm: syz-executor290 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
[ 72.808587][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
[ 72.819269][ T5063] Call Trace:
[ 72.822561][ T5063]
[ 72.825803][ T5063] dump_stack_lvl+0x241/0x360
[ 72.831661][ T5063] ? __pfx_dump_stack_lvl+0x10/0x10
[ 72.838361][ T5063] ? __pfx__printk+0x10/0x10
[ 72.843794][ T5063] __ubsan_handle_out_of_bounds+0x121/0x150
[ 72.851214][ T5063] nilfs_add_link+0xb39/0xb80
[ 72.857805][ T5063] ? __pfx_nilfs_add_link+0x10/0x10
[ 72.863918][ T5063] ? rcu_is_watching+0x15/0xb0
[ 72.869240][ T5063] ? __mark_inode_dirty+0x805/0xdb0
[ 72.875652][ T5063] nilfs_link+0x136/0x220
[ 72.881242][ T5063] ? __pfx_nilfs_link+0x10/0x10
[ 72.886875][ T5063] vfs_link+0x4f5/0x690
[ 72.894143][ T5063] do_linkat+0x356/0x760
[ 72.899808][ T5063] ? __pfx_do_linkat+0x10/0x10
[ 72.904969][ T5063] ? getname_flags+0x1fe/0x4f0
[ 72.911175][ T5063] __x64_sys_linkat+0xdd/0xf0
[ 72.916104][ T5063] do_syscall_64+0xfb/0x240
[ 72.921845][ T5063] entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 72.929416][ T5063] RIP: 0033:0x7fa0356fc679
[ 72.934456][ T5063] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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
[ 72.956872][ T5063] RSP: 002b:00007ffd8d2dea18 EFLAGS: 00000246 ORIG_RAX: 0000000000000109
[ 72.967188][ T5063] RAX: ffffffffffffffda RBX: 00007ffd8d2debe8 RCX: 00007fa0356fc679
[ 72.978873][ T5063] RDX: 0000000000000004 RSI: 0000000020000180 RDI: 0000000000000004
[ 72.988107][ T5063] RBP: 00007fa035770610 R08: 0000000000000000 R09: 00007ffd8d2debe8
[ 72.997246][ T5063] R10: 0000000020000640 R11: 0000000000000246 R12: 0000000000000001
[ 73.006374][ T5063] R13: 00007ffd8d2debd8 R14: 0000000000000001 R15: 0000000000000001
[ 73.015985][ T5063]
[ 73.019835][ T5063] ---[ end trace ]---
[ 73.024560][ T5063] Kernel panic - not syncing: UBSAN: panic_on_warn set ...
[ 73.032767][ T5063] CPU: 1 PID: 5063 Comm: syz-executor290 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
[ 73.048814][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
[ 73.059635][ T5063] Call Trace:
[ 73.064646][ T5063]
[ 73.069672][ T5063] dump_stack_lvl+0x241/0x360
[ 73.075630][ T5063] ? __pfx_dump_stack_lvl+0x10/0x10
[ 73.082455][ T5063] ? __pfx__printk+0x10/0x10
[ 73.088950][ T5063] ? vprintk_emit+0x631/0x770
[ 73.095043][ T5063] ? vscnprintf+0x5d/0x90
[ 73.100286][ T5063] panic+0x349/0x860
[ 73.104440][ T5063] ? check_panic_on_warn+0x21/0xb0
[ 73.115875][ T5063] ? __pfx_panic+0x10/0x10
[ 73.123364][ T5063] ? _printk+0xd5/0x120
[ 73.129998][ T5063] ? __pfx__printk+0x10/0x10
[ 73.134613][ T5063] check_panic_on_warn+0x86/0xb0
[ 73.141031][ T5063] __ubsan_handle_out_of_bounds+0x141/0x150
[ 73.148316][ T5063] nilfs_add_link+0xb39/0xb80
[ 73.153853][ T5063] ? __pfx_nilfs_add_link+0x10/0x10
[ 73.160148][ T5063] ? rcu_is_watching+0x15/0xb0
[ 73.166227][ T5063] ? __mark_inode_dirty+0x805/0xdb0
[ 73.171437][ T5063] nilfs_link+0x136/0x220
[ 73.176937][ T5063] ? __pfx_nilfs_link+0x10/0x10
[ 73.182457][ T5063] vfs_link+0x4f5/0x690
[ 73.187094][ T5063] do_linkat+0x356/0x760
[ 73.192292][ T5063] ? __pfx_do_linkat+0x10/0x10
[ 73.197193][ T5063] ? getname_flags+0x1fe/0x4f0
[ 73.201962][ T5063] __x64_sys_linkat+0xdd/0xf0
[ 73.208074][ T5063] do_syscall_64+0xfb/0x240
[ 73.213249][ T5063] entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 73.220617][ T5063] RIP: 0033:0x7fa0356fc679
[ 73.225921][ T5063] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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
[ 73.249705][ T5063] RSP: 002b:00007ffd8d2dea18 EFLAGS: 00000246 ORIG_RAX: 0000000000000109
[ 73.258679][ T5063] RAX: ffffffffffffffda RBX: 00007ffd8d2debe8 RCX: 00007fa0356fc679
[ 73.266952][ T5063] RDX: 0000000000000004 RSI: 0000000020000180 RDI: 0000000000000004
[ 73.275578][ T5063] RBP: 00007fa035770610 R08: 0000000000000000 R09: 00007ffd8d2debe8
[ 73.285237][ T5063] R10: 0000000020000640 R11: 0000000000000246 R12: 0000000000000001
[ 73.295381][ T5063] R13: 00007ffd8d2debd8 R14: 0000000000000001 R15: 0000000000000001
[ 73.305473][ T5063]
[ 73.309076][ T5063] Kernel Offset: disabled
[ 73.314001][ T5063] Rebooting in 86400 seconds..