./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor498041622
<...>
Warning: Permanently added '10.128.1.50' (ED25519) to the list of known hosts.
execve("./syz-executor498041622", ["./syz-executor498041622"], 0x7ffd917aca80 /* 10 vars */) = 0
brk(NULL) = 0x555575c12000
brk(0x555575c12d00) = 0x555575c12d00
arch_prctl(ARCH_SET_FS, 0x555575c12380) = 0
set_tid_address(0x555575c12650) = 5838
set_robust_list(0x555575c12660, 24) = 0
rseq(0x555575c12ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor498041622", 4096) = 27
getrandom("\xa3\xcd\x3d\x9b\x7a\x4d\xca\x91", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x555575c12d00
brk(0x555575c33d00) = 0x555575c33d00
brk(0x555575c34000) = 0x555575c34000
mprotect(0x7fac7304e000, 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
executing program
write(1, "executing program\n", 18) = 18
memfd_create("syzkaller", 0) = 3
mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fac6aa00000
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"..., 67108864) = 67108864
munmap(0x7fac6aa00000, 138412032) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
ioctl(4, LOOP_SET_FD, 3) = 0
close(3) = 0
close(4) = 0
mkdir("./file2", 0777) = 0
[ 78.203849][ T5838] loop0: detected capacity change from 0 to 131072
[ 78.252436][ T5838] F2FS-fs (loop0): invalid crc value
[ 78.265155][ T5838] F2FS-fs (loop0): Found nat_bits in checkpoint
mount("/dev/loop0", "./file2", "f2fs", MS_DIRSYNC|MS_RELATIME, "") = 0
openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3
chdir("./file2") = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 78.312741][ T5838] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4
[ 78.328142][ T5838] ------------[ cut here ]------------
[ 78.334355][ T5838] WARNING: CPU: 1 PID: 5838 at fs/inode.c:407 drop_nlink+0xc4/0x110
[ 78.342456][ T5838] Modules linked in:
[ 78.346399][ T5838] CPU: 1 UID: 0 PID: 5838 Comm: syz-executor498 Not tainted 6.12.0-syzkaller-03657-g43fb83c17ba2 #0
[ 78.357231][ T5838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
[ 78.367456][ T5838] RIP: 0010:drop_nlink+0xc4/0x110
[ 78.372594][ T5838] Code: bb 70 07 00 00 be 08 00 00 00 e8 07 df e5 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 ed e9 7e ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
[ 78.392364][ T5838] RSP: 0018:ffffc90003bc7b98 EFLAGS: 00010293
[ 78.398496][ T5838] RAX: ffffffff82160e93 RBX: 1ffff1100ef4a009 RCX: ffff88807d163c00
[ 78.407197][ T5838] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 78.415265][ T5838] RBP: 0000000000000000 R08: ffffffff82160e13 R09: 1ffffffff203969e
[ 78.423470][ T5838] R10: dffffc0000000000 R11: fffffbfff203969f R12: ffff888077a50048
[ 78.431540][ T5838] R13: dffffc0000000000 R14: ffff888077a50000 R15: dffffc0000000000
[ 78.439606][ T5838] FS: 0000555575c12380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
[ 78.448583][ T5838] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 78.455273][ T5838] CR2: 000000000066c7e0 CR3: 0000000076c52000 CR4: 00000000003526f0
[ 78.463357][ T5838] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 78.471415][ T5838] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 78.479466][ T5838] Call Trace:
[ 78.482754][ T5838]
[ 78.485691][ T5838] ? __warn+0x168/0x4e0
[ 78.489953][ T5838] ? drop_nlink+0xc4/0x110
[ 78.494415][ T5838] ? report_bug+0x2b3/0x500
[ 78.498953][ T5838] ? drop_nlink+0xc4/0x110
[ 78.503543][ T5838] ? handle_bug+0x60/0x90
[ 78.507941][ T5838] ? exc_invalid_op+0x1a/0x50
[ 78.512797][ T5838] ? asm_exc_invalid_op+0x1a/0x20
[ 78.517897][ T5838] ? drop_nlink+0x43/0x110
[ 78.522396][ T5838] ? drop_nlink+0xc3/0x110
[ 78.526868][ T5838] ? drop_nlink+0xc4/0x110
[ 78.531410][ T5838] ? drop_nlink+0xc3/0x110
[ 78.535915][ T5838] f2fs_drop_nlink+0xd6/0x380
[ 78.540691][ T5838] f2fs_unlink+0x47f/0x960
[ 78.545152][ T5838] ? __pfx_f2fs_unlink+0x10/0x10
[ 78.550209][ T5838] ? bpf_lsm_inode_unlink+0x9/0x10
[ 78.555362][ T5838] ? security_inode_unlink+0xd9/0x340
[ 78.560830][ T5838] vfs_unlink+0x365/0x650
[ 78.565219][ T5838] do_unlinkat+0x4ae/0x830
[ 78.569733][ T5838] ? __pfx_do_unlinkat+0x10/0x10
[ 78.574720][ T5838] ? __might_fault+0xaa/0x120
[ 78.579628][ T5838] ? __might_fault+0xc6/0x120
[ 78.584365][ T5838] ? strncpy_from_user+0x13a/0x260
[ 78.589595][ T5838] ? getname_flags+0x1e3/0x540
[ 78.594499][ T5838] __x64_sys_unlinkat+0xcc/0xf0
[ 78.599429][ T5838] do_syscall_64+0xf3/0x230
[ 78.603992][ T5838] ? clear_bhb_loop+0x35/0x90
[ 78.608693][ T5838] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 78.614692][ T5838] RIP: 0033:0x7fac72fcb5f9
[ 78.619208][ T5838] 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
[ 78.639158][ T5838] RSP: 002b:00007fff17b1fa58 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
[ 78.647639][ T5838] RAX: ffffffffffffffda RBX: 00007fff17b1fc38 RCX: 00007fac72fcb5f9
[ 78.655678][ T5838] RDX: 0000000000000000 RSI: 0000000020000380 RDI: 00000000ffffff9c
[ 78.663821][ T5838] RBP: 00007fac7304e610 R08: 00000000000105b7 R09: 0000000000000000
[ 78.671877][ T5838] R10: 00007fff17b1f920 R11: 0000000000000246 R12: 0000000000000001
[ 78.679927][ T5838] R13: 00007fff17b1fc28 R14: 0000000000000001 R15: 0000000000000001
[ 78.687947][ T5838]
[ 78.691036][ T5838] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 78.698339][ T5838] CPU: 1 UID: 0 PID: 5838 Comm: syz-executor498 Not tainted 6.12.0-syzkaller-03657-g43fb83c17ba2 #0
[ 78.709114][ T5838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
[ 78.719188][ T5838] Call Trace:
[ 78.722521][ T5838]
[ 78.725457][ T5838] dump_stack_lvl+0x241/0x360
[ 78.730170][ T5838] ? __pfx_dump_stack_lvl+0x10/0x10
[ 78.735404][ T5838] ? __pfx__printk+0x10/0x10
[ 78.740025][ T5838] ? _printk+0xd5/0x120
[ 78.744195][ T5838] ? __init_begin+0x41000/0x41000
[ 78.749230][ T5838] ? vscnprintf+0x5d/0x90
[ 78.753659][ T5838] panic+0x349/0x880
[ 78.757567][ T5838] ? __warn+0x177/0x4e0
[ 78.761773][ T5838] ? __pfx_panic+0x10/0x10
[ 78.766223][ T5838] ? show_trace_log_lvl+0x3b2/0x410
[ 78.771486][ T5838] __warn+0x34b/0x4e0
[ 78.775501][ T5838] ? drop_nlink+0xc4/0x110
[ 78.779940][ T5838] report_bug+0x2b3/0x500
[ 78.784303][ T5838] ? drop_nlink+0xc4/0x110
[ 78.788739][ T5838] handle_bug+0x60/0x90
[ 78.792937][ T5838] exc_invalid_op+0x1a/0x50
[ 78.797482][ T5838] asm_exc_invalid_op+0x1a/0x20
[ 78.802424][ T5838] RIP: 0010:drop_nlink+0xc4/0x110
[ 78.807465][ T5838] Code: bb 70 07 00 00 be 08 00 00 00 e8 07 df e5 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 ed e9 7e ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
[ 78.827100][ T5838] RSP: 0018:ffffc90003bc7b98 EFLAGS: 00010293
[ 78.833272][ T5838] RAX: ffffffff82160e93 RBX: 1ffff1100ef4a009 RCX: ffff88807d163c00
[ 78.841254][ T5838] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 78.849236][ T5838] RBP: 0000000000000000 R08: ffffffff82160e13 R09: 1ffffffff203969e
[ 78.857216][ T5838] R10: dffffc0000000000 R11: fffffbfff203969f R12: ffff888077a50048
[ 78.865212][ T5838] R13: dffffc0000000000 R14: ffff888077a50000 R15: dffffc0000000000
[ 78.873206][ T5838] ? drop_nlink+0x43/0x110
[ 78.877642][ T5838] ? drop_nlink+0xc3/0x110
[ 78.882078][ T5838] ? drop_nlink+0xc3/0x110
[ 78.886510][ T5838] f2fs_drop_nlink+0xd6/0x380
[ 78.891211][ T5838] f2fs_unlink+0x47f/0x960
[ 78.895645][ T5838] ? __pfx_f2fs_unlink+0x10/0x10
[ 78.900602][ T5838] ? bpf_lsm_inode_unlink+0x9/0x10
[ 78.905726][ T5838] ? security_inode_unlink+0xd9/0x340
[ 78.911116][ T5838] vfs_unlink+0x365/0x650
[ 78.915468][ T5838] do_unlinkat+0x4ae/0x830
[ 78.919904][ T5838] ? __pfx_do_unlinkat+0x10/0x10
[ 78.924855][ T5838] ? __might_fault+0xaa/0x120
[ 78.929728][ T5838] ? __might_fault+0xc6/0x120
[ 78.934442][ T5838] ? strncpy_from_user+0x13a/0x260
[ 78.939584][ T5838] ? getname_flags+0x1e3/0x540
[ 78.944381][ T5838] __x64_sys_unlinkat+0xcc/0xf0
[ 78.949250][ T5838] do_syscall_64+0xf3/0x230
[ 78.953771][ T5838] ? clear_bhb_loop+0x35/0x90
[ 78.958472][ T5838] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 78.964390][ T5838] RIP: 0033:0x7fac72fcb5f9
[ 78.968831][ T5838] 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
[ 78.988451][ T5838] RSP: 002b:00007fff17b1fa58 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
[ 78.996886][ T5838] RAX: ffffffffffffffda RBX: 00007fff17b1fc38 RCX: 00007fac72fcb5f9
[ 79.004872][ T5838] RDX: 0000000000000000 RSI: 0000000020000380 RDI: 00000000ffffff9c
[ 79.012853][ T5838] RBP: 00007fac7304e610 R08: 00000000000105b7 R09: 0000000000000000
[ 79.020840][ T5838] R10: 00007fff17b1f920 R11: 0000000000000246 R12: 0000000000000001
[ 79.028848][ T5838] R13: 00007fff17b1fc28 R14: 0000000000000001 R15: 0000000000000001
[ 79.036877][ T5838]
[ 79.040186][ T5838] Kernel Offset: disabled
[ 79.044578][ T5838] Rebooting in 86400 seconds..