./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4054707555
<...>
Warning: Permanently added '10.128.1.230' (ED25519) to the list of known hosts.
execve("./syz-executor4054707555", ["./syz-executor4054707555"], 0x7fff7e03df20 /* 10 vars */) = 0
brk(NULL) = 0x555564001000
brk(0x555564001d00) = 0x555564001d00
arch_prctl(ARCH_SET_FS, 0x555564001380) = 0
set_tid_address(0x555564001650) = 5828
set_robust_list(0x555564001660, 24) = 0
rseq(0x555564001ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor4054707555", 4096) = 28
getrandom("\x3e\xc7\xfb\xb8\xd8\xcc\xe1\xf8", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x555564001d00
brk(0x555564022d00) = 0x555564022d00
brk(0x555564023000) = 0x555564023000
mprotect(0x7f02af6b9000, 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
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5830 attached
, child_tidptr=0x555564001650) = 5830
[pid 5830] set_robust_list(0x555564001660, 24) = 0
[pid 5830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5830] setpgid(0, 0) = 0
[pid 5830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5830] write(3, "1000", 4) = 4
[pid 5830] close(3) = 0
[pid 5830] write(1, "executing program\n", 18executing program
) = 18
[pid 5830] memfd_create("syzkaller", 0) = 3
[pid 5830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f02a7000000
[pid 5830] write(3, "\xb5\x84\x31\x7b\xb6\x84\x31\x7b\xb7\x84\x31\x7b\xb8\x84\x31\x7b\xb9\x84\x31\x7b\xba\x84\x31\x7b\xbb\x84\x31\x7b\xbc\x84\x31\x7b\xbd\x84\x31\x7b\xbe\x84\x31\x7b\xbf\x84\x31\x7b\xc0\x84\x31\x7b\xc1\x84\x31\x7b\xc2\x84\x31\x7b\xc3\x84\x31\x7b\xc4\x84\x31\x7b\xc5\x84\x31\x7b\xc6\x84\x31\x7b\xc7\x84\x31\x7b\xc8\x84\x31\x7b\xc9\x84\x31\x7b\xca\x84\x31\x7b\xcb\x84\x31\x7b\xcc\x84\x31\x7b\xcd\x84\x31\x7b"..., 65536) = 65536
[pid 5830] munmap(0x7f02a7000000, 138412032) = 0
[pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5830] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5830] close(3) = 0
[pid 5830] close(4) = 0
[pid 5830] mkdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", 0777) = 0
[pid 5830] mount("/dev/loop0", "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", "sysv", 0, "") = 0
[pid 5830] openat(AT_FDCWD, "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", O_RDONLY|O_DIRECTORY) = 3
[pid 5830] chdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f") = 0
[pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 66.126115][ T5830] loop0: detected capacity change from 0 to 128
[ 66.164964][ T5830] VFS: Found a Xenix FS (block size = 1024) on device loop0
[ 66.216304][ T5830] syz-executor405: attempt to access beyond end of device
[ 66.216304][ T5830] loop0: rw=0, sector=6491536, nr_sectors = 2 limit=128
[ 66.230477][ T5830] Buffer I/O error on dev loop0, logical block 3245768, async page read
[ 66.239762][ T5830] ------------[ cut here ]------------
[ 66.245258][ T5830] WARNING: CPU: 0 PID: 5830 at fs/inode.c:393 inc_nlink+0x127/0x150
[ 66.253292][ T5830] Modules linked in:
[ 66.257280][ T5830] CPU: 0 UID: 0 PID: 5830 Comm: syz-executor405 Not tainted 6.12.0-rc7-syzkaller #0
[ 66.266710][ T5830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
[ 66.276950][ T5830] RIP: 0010:inc_nlink+0x127/0x150
[ 66.282003][ T5830] Code: ff e9 35 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 47 ff ff ff 4c 89 ef e8 b4 04 e6 ff e9 3a ff ff ff e8 ba 5d 7f ff 90 <0f> 0b 90 e9 7b ff ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 49
[ 66.301685][ T5830] RSP: 0018:ffffc90003c57d30 EFLAGS: 00010293
[ 66.307876][ T5830] RAX: ffffffff82157bf6 RBX: 1ffff1100fcf6010 RCX: ffff88803170da00
[ 66.315914][ T5830] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 66.323957][ T5830] RBP: 0000000000000000 R08: ffffffff82157b70 R09: 0000000000000000
[ 66.331952][ T5830] R10: ffffc90003c57ca8 R11: ffffffff82c49a10 R12: dffffc0000000000
[ 66.340129][ T5830] R13: ffff88807e7b0080 R14: ffff88807e7b0038 R15: 0000000000000000
[ 66.348184][ T5830] FS: 0000555564001380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
[ 66.357167][ T5830] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 66.363771][ T5830] CR2: 00007ffe43cdd158 CR3: 0000000033e5c000 CR4: 00000000003526f0
[ 66.371811][ T5830] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 66.379853][ T5830] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 66.387887][ T5830] Call Trace:
[ 66.391162][ T5830]
[ 66.394146][ T5830] ? __warn+0x168/0x4e0
[ 66.398324][ T5830] ? inc_nlink+0x127/0x150
[ 66.402734][ T5830] ? report_bug+0x2b3/0x500
[ 66.407292][ T5830] ? inc_nlink+0x127/0x150
[ 66.411730][ T5830] ? handle_bug+0x60/0x90
[ 66.416112][ T5830] ? exc_invalid_op+0x1a/0x50
[ 66.420809][ T5830] ? asm_exc_invalid_op+0x1a/0x20
[ 66.425892][ T5830] ? __pfx_sysv_mkdir+0x10/0x10
[ 66.430767][ T5830] ? inc_nlink+0xa0/0x150
[ 66.435210][ T5830] ? inc_nlink+0x126/0x150
[ 66.439647][ T5830] ? inc_nlink+0x127/0x150
[ 66.444119][ T5830] sysv_mkdir+0x21/0x130
[ 66.448377][ T5830] vfs_mkdir+0x2f9/0x4f0
[ 66.452612][ T5830] do_mkdirat+0x264/0x3a0
[ 66.457038][ T5830] ? __might_fault+0xaa/0x120
[ 66.461740][ T5830] ? __pfx_do_mkdirat+0x10/0x10
[ 66.466756][ T5830] ? strncpy_from_user+0x13a/0x260
[ 66.471884][ T5830] ? getname_flags+0x1e3/0x540
[ 66.476712][ T5830] __x64_sys_mkdir+0x6c/0x80
[ 66.481317][ T5830] do_syscall_64+0xf3/0x230
[ 66.485905][ T5830] ? clear_bhb_loop+0x35/0x90
[ 66.490603][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 66.496551][ T5830] RIP: 0033:0x7f02af63ca59
[ 66.500987][ T5830] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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
[ 66.520670][ T5830] RSP: 002b:00007fff766cd0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[ 66.529154][ T5830] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f02af63ca59
[ 66.537188][ T5830] RDX: 00007f02af63ba51 RSI: 0000000000000000 RDI: 0000000020000040
[ 66.545218][ T5830] RBP: 00007f02af6b95f0 R08: 0000000000009e89 R09: 00005555640024c0
[ 66.553198][ T5830] R10: 00007fff766ccf90 R11: 0000000000000246 R12: 00007fff766cd0f0
[ 66.561255][ T5830] R13: 00007fff766cd318 R14: 431bde82d7b634db R15: 00007f02af68503b
[ 66.569309][ T5830]
[ 66.572346][ T5830] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 66.579619][ T5830] CPU: 0 UID: 0 PID: 5830 Comm: syz-executor405 Not tainted 6.12.0-rc7-syzkaller #0
[ 66.588981][ T5830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
[ 66.599026][ T5830] Call Trace:
[ 66.602291][ T5830]
[ 66.605215][ T5830] dump_stack_lvl+0x241/0x360
[ 66.609893][ T5830] ? __pfx_dump_stack_lvl+0x10/0x10
[ 66.615086][ T5830] ? __pfx__printk+0x10/0x10
[ 66.619683][ T5830] ? _printk+0xd5/0x120
[ 66.623835][ T5830] ? __init_begin+0x41000/0x41000
[ 66.628873][ T5830] ? vscnprintf+0x5d/0x90
[ 66.633207][ T5830] panic+0x349/0x880
[ 66.637105][ T5830] ? __warn+0x177/0x4e0
[ 66.641255][ T5830] ? __pfx_panic+0x10/0x10
[ 66.645667][ T5830] ? show_trace_log_lvl+0x3b2/0x410
[ 66.650871][ T5830] __warn+0x34b/0x4e0
[ 66.654861][ T5830] ? inc_nlink+0x127/0x150
[ 66.659331][ T5830] report_bug+0x2b3/0x500
[ 66.663669][ T5830] ? inc_nlink+0x127/0x150
[ 66.668102][ T5830] handle_bug+0x60/0x90
[ 66.672268][ T5830] exc_invalid_op+0x1a/0x50
[ 66.676810][ T5830] asm_exc_invalid_op+0x1a/0x20
[ 66.681658][ T5830] RIP: 0010:inc_nlink+0x127/0x150
[ 66.686684][ T5830] Code: ff e9 35 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 47 ff ff ff 4c 89 ef e8 b4 04 e6 ff e9 3a ff ff ff e8 ba 5d 7f ff 90 <0f> 0b 90 e9 7b ff ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 49
[ 66.706300][ T5830] RSP: 0018:ffffc90003c57d30 EFLAGS: 00010293
[ 66.712393][ T5830] RAX: ffffffff82157bf6 RBX: 1ffff1100fcf6010 RCX: ffff88803170da00
[ 66.720364][ T5830] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 66.728350][ T5830] RBP: 0000000000000000 R08: ffffffff82157b70 R09: 0000000000000000
[ 66.736317][ T5830] R10: ffffc90003c57ca8 R11: ffffffff82c49a10 R12: dffffc0000000000
[ 66.744289][ T5830] R13: ffff88807e7b0080 R14: ffff88807e7b0038 R15: 0000000000000000
[ 66.752258][ T5830] ? __pfx_sysv_mkdir+0x10/0x10
[ 66.757116][ T5830] ? inc_nlink+0xa0/0x150
[ 66.761450][ T5830] ? inc_nlink+0x126/0x150
[ 66.765872][ T5830] sysv_mkdir+0x21/0x130
[ 66.770112][ T5830] vfs_mkdir+0x2f9/0x4f0
[ 66.774363][ T5830] do_mkdirat+0x264/0x3a0
[ 66.778729][ T5830] ? __might_fault+0xaa/0x120
[ 66.783405][ T5830] ? __pfx_do_mkdirat+0x10/0x10
[ 66.788251][ T5830] ? strncpy_from_user+0x13a/0x260
[ 66.793379][ T5830] ? getname_flags+0x1e3/0x540
[ 66.798137][ T5830] __x64_sys_mkdir+0x6c/0x80
[ 66.802722][ T5830] do_syscall_64+0xf3/0x230
[ 66.807223][ T5830] ? clear_bhb_loop+0x35/0x90
[ 66.811990][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 66.817877][ T5830] RIP: 0033:0x7f02af63ca59
[ 66.822287][ T5830] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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
[ 66.841905][ T5830] RSP: 002b:00007fff766cd0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[ 66.850423][ T5830] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f02af63ca59
[ 66.858394][ T5830] RDX: 00007f02af63ba51 RSI: 0000000000000000 RDI: 0000000020000040
[ 66.866364][ T5830] RBP: 00007f02af6b95f0 R08: 0000000000009e89 R09: 00005555640024c0
[ 66.874331][ T5830] R10: 00007fff766ccf90 R11: 0000000000000246 R12: 00007fff766cd0f0
[ 66.882395][ T5830] R13: 00007fff766cd318 R14: 431bde82d7b634db R15: 00007f02af68503b
[ 66.890485][ T5830]
[ 66.893851][ T5830] Kernel Offset: disabled
[ 66.898200][ T5830] Rebooting in 86400 seconds..