./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2942526728
<...>
Warning: Permanently added '10.128.0.77' (ED25519) to the list of known hosts.
execve("./syz-executor2942526728", ["./syz-executor2942526728"], 0x7ffe3911b790 /* 10 vars */) = 0
brk(NULL) = 0x5555631cb000
brk(0x5555631cbd00) = 0x5555631cbd00
arch_prctl(ARCH_SET_FS, 0x5555631cb380) = 0
set_tid_address(0x5555631cb650) = 5819
set_robust_list(0x5555631cb660, 24) = 0
rseq(0x5555631cbca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor2942526728", 4096) = 28
getrandom("\xff\x4f\x72\x31\x86\x10\x36\xdb", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x5555631cbd00
brk(0x5555631ecd00) = 0x5555631ecd00
brk(0x5555631ed000) = 0x5555631ed000
mprotect(0x7f2f5e52c000, 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
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 5820 attached
, child_tidptr=0x5555631cb650) = 5820
[pid 5820] set_robust_list(0x5555631cb660, 24) = 0
[pid 5820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5820] setpgid(0, 0) = 0
[pid 5820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5820] write(3, "1000", 4) = 4
[pid 5820] close(3) = 0
[pid 5820] write(1, "executing program\n", 18executing program
) = 18
[pid 5820] memfd_create("syzkaller", 0) = 3
[pid 5820] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2f56000000
[pid 5820] 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"..., 16777216) = 16777216
[pid 5820] munmap(0x7f2f56000000, 138412032) = 0
[pid 5820] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5820] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5820] close(3) = 0
[pid 5820] close(4) = 0
[pid 5820] mkdir("./bus", 0777) = 0
syzkaller login: [ 92.860992][ T5820] loop0: detected capacity change from 0 to 32768
[ 92.901014][ T5820]
[ 92.901014][ T5820] ... Log Wrap ... Log Wrap ... Log Wrap ...
[pid 5820] mount("/dev/loop0", "./bus", "jfs", 0, "iocharset=maccroatian,discard=0x0000000000000003,nodiscard,errors=continue,iocharset=maccyrillic,") = 0
[pid 5820] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3
[pid 5820] chdir("./bus") = 0
[pid 5820] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5820] rmdir("./file0") = -1 EIO (Input/output error)
[pid 5820] chdir("./file0") = 0
[ 92.901014][ T5820]
[ 92.926169][ T5820] read_mapping_page failed!
[ 92.931092][ T5820] ERROR: (device loop0): txCommit:
[ 92.931092][ T5820]
[ 92.949044][ T5820] ------------[ cut here ]------------
[ 92.954829][ T5820] WARNING: CPU: 0 PID: 5820 at fs/inode.c:474 inc_nlink+0x122/0x150
[ 92.962926][ T5820] Modules linked in:
[ 92.966992][ T5820] CPU: 0 UID: 0 PID: 5820 Comm: syz-executor294 Not tainted 6.15.0-syzkaller-03645-g3d413f0cfd7e #0 PREEMPT(full)
[ 92.979331][ T5820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 92.989496][ T5820] RIP: 0010:inc_nlink+0x122/0x150
[ 92.994611][ T5820] Code: e8 ff e9 3a ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 4c ff ff ff 48 89 df e8 c9 47 e8 ff e9 3f ff ff ff e8 df 8c 87 ff 90 <0f> 0b 90 eb 80 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 50 ff ff ff
[ 93.014414][ T5820] RSP: 0018:ffffc900041cfb08 EFLAGS: 00010293
[ 93.020529][ T5820] RAX: ffffffff82386d01 RBX: ffff8880761f3bc8 RCX: ffff88807ea93c00
[ 93.028583][ T5820] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 93.036808][ T5820] RBP: 0000000000000000 R08: ffffffff8f7ebfb7 R09: 1ffffffff1efd7f6
[ 93.044944][ T5820] R10: dffffc0000000000 R11: fffffbfff1efd7f7 R12: dffffc0000000000
[ 93.052994][ T5820] R13: 1ffff1100ec3e779 R14: ffff8880761f3b80 R15: ffff8880761f3c50
[ 93.061064][ T5820] FS: 00005555631cb380(0000) GS:ffff8881260c0000(0000) knlGS:0000000000000000
[ 93.070058][ T5820] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 93.076700][ T5820] CR2: 0000200000010b40 CR3: 000000007cfe6000 CR4: 00000000003526f0
[ 93.084735][ T5820] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 93.092766][ T5820] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 93.100747][ T5820] Call Trace:
[ 93.104088][ T5820]
[ 93.107051][ T5820] jfs_mkdir+0x7e0/0xa70
[ 93.111375][ T5820] ? __pfx_jfs_mkdir+0x10/0x10
[ 93.116218][ T5820] ? generic_permission+0x2e5/0x690
[ 93.121494][ T5820] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 93.126548][ T5820] vfs_mkdir+0x306/0x510
[ 93.130819][ T5820] do_mkdirat+0x247/0x590
[ 93.135218][ T5820] ? __pfx_do_mkdirat+0x10/0x10
[ 93.140100][ T5820] ? strncpy_from_user+0x150/0x290
[ 93.145291][ T5820] ? getname_flags+0x1e5/0x540
[ 93.150089][ T5820] __x64_sys_mkdir+0x6c/0x80
[ 93.154778][ T5820] do_syscall_64+0xfa/0x3b0
[ 93.159336][ T5820] ? lockdep_hardirqs_on+0x9c/0x150
[ 93.164698][ T5820] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 93.170812][ T5820] ? clear_bhb_loop+0x60/0xb0
[ 93.175749][ T5820] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 93.181832][ T5820] RIP: 0033:0x7f2f5e4b2ad9
[ 93.186272][ T5820] 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
[ 93.205961][ T5820] RSP: 002b:00007fff4c76b8b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[ 93.214452][ T5820] RAX: ffffffffffffffda RBX: 0000200000000240 RCX: 00007f2f5e4b2ad9
[ 93.222490][ T5820] RDX: 00007f2f5e4b2ad9 RSI: 0000000000000000 RDI: 0000200000010b40
[ 93.230505][ T5820] RBP: 0030656c69662f2e R08: 00005555631cc4c0 R09: 00005555631cc4c0
[ 93.238546][ T5820] R10: 00005555631cc4c0 R11: 0000000000000246 R12: 00007fff4c76b8e0
[ 93.246632][ T5820] R13: 00007fff4c76bb08 R14: 431bde82d7b634db R15: 00007f2f5e4fb03b
[ 93.254702][ T5820]
[ 93.257759][ T5820] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 93.265080][ T5820] CPU: 0 UID: 0 PID: 5820 Comm: syz-executor294 Not tainted 6.15.0-syzkaller-03645-g3d413f0cfd7e #0 PREEMPT(full)
[ 93.277166][ T5820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 93.287410][ T5820] Call Trace:
[ 93.290706][ T5820]
[ 93.293646][ T5820] dump_stack_lvl+0x99/0x250
[ 93.298254][ T5820] ? __asan_memcpy+0x40/0x70
[ 93.302869][ T5820] ? __pfx_dump_stack_lvl+0x10/0x10
[ 93.308112][ T5820] ? __pfx__printk+0x10/0x10
[ 93.312764][ T5820] panic+0x2db/0x790
[ 93.316697][ T5820] ? __pfx_panic+0x10/0x10
[ 93.321140][ T5820] ? show_trace_log_lvl+0x4fb/0x550
[ 93.326410][ T5820] __warn+0x31b/0x4b0
[ 93.330420][ T5820] ? inc_nlink+0x122/0x150
[ 93.334859][ T5820] ? inc_nlink+0x122/0x150
[ 93.339293][ T5820] report_bug+0x2be/0x4f0
[ 93.343640][ T5820] ? inc_nlink+0x122/0x150
[ 93.348070][ T5820] ? inc_nlink+0x122/0x150
[ 93.352499][ T5820] ? inc_nlink+0x124/0x150
[ 93.356931][ T5820] handle_bug+0x84/0x160
[ 93.361291][ T5820] exc_invalid_op+0x1a/0x50
[ 93.365815][ T5820] asm_exc_invalid_op+0x1a/0x20
[ 93.370771][ T5820] RIP: 0010:inc_nlink+0x122/0x150
[ 93.375816][ T5820] Code: e8 ff e9 3a ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 4c ff ff ff 48 89 df e8 c9 47 e8 ff e9 3f ff ff ff e8 df 8c 87 ff 90 <0f> 0b 90 eb 80 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 50 ff ff ff
[ 93.395434][ T5820] RSP: 0018:ffffc900041cfb08 EFLAGS: 00010293
[ 93.401513][ T5820] RAX: ffffffff82386d01 RBX: ffff8880761f3bc8 RCX: ffff88807ea93c00
[ 93.409516][ T5820] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 93.417502][ T5820] RBP: 0000000000000000 R08: ffffffff8f7ebfb7 R09: 1ffffffff1efd7f6
[ 93.425489][ T5820] R10: dffffc0000000000 R11: fffffbfff1efd7f7 R12: dffffc0000000000
[ 93.433499][ T5820] R13: 1ffff1100ec3e779 R14: ffff8880761f3b80 R15: ffff8880761f3c50
[ 93.441519][ T5820] ? inc_nlink+0x121/0x150
[ 93.446002][ T5820] ? inc_nlink+0x121/0x150
[ 93.450454][ T5820] jfs_mkdir+0x7e0/0xa70
[ 93.454761][ T5820] ? __pfx_jfs_mkdir+0x10/0x10
[ 93.459618][ T5820] ? generic_permission+0x2e5/0x690
[ 93.464857][ T5820] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 93.469908][ T5820] vfs_mkdir+0x306/0x510
[ 93.474210][ T5820] do_mkdirat+0x247/0x590
[ 93.478629][ T5820] ? __pfx_do_mkdirat+0x10/0x10
[ 93.483758][ T5820] ? strncpy_from_user+0x150/0x290
[ 93.488932][ T5820] ? getname_flags+0x1e5/0x540
[ 93.493892][ T5820] __x64_sys_mkdir+0x6c/0x80
[ 93.498507][ T5820] do_syscall_64+0xfa/0x3b0
[ 93.503037][ T5820] ? lockdep_hardirqs_on+0x9c/0x150
[ 93.508249][ T5820] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 93.514937][ T5820] ? clear_bhb_loop+0x60/0xb0
[ 93.519682][ T5820] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 93.525631][ T5820] RIP: 0033:0x7f2f5e4b2ad9
[ 93.530124][ T5820] 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
[ 93.549866][ T5820] RSP: 002b:00007fff4c76b8b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[ 93.558430][ T5820] RAX: ffffffffffffffda RBX: 0000200000000240 RCX: 00007f2f5e4b2ad9
[ 93.566642][ T5820] RDX: 00007f2f5e4b2ad9 RSI: 0000000000000000 RDI: 0000200000010b40
[ 93.574696][ T5820] RBP: 0030656c69662f2e R08: 00005555631cc4c0 R09: 00005555631cc4c0
[ 93.582683][ T5820] R10: 00005555631cc4c0 R11: 0000000000000246 R12: 00007fff4c76b8e0
[ 93.590663][ T5820] R13: 00007fff4c76bb08 R14: 431bde82d7b634db R15: 00007f2f5e4fb03b
[ 93.598677][ T5820]
[ 93.601972][ T5820] Kernel Offset: disabled
[ 93.606307][ T5820] Rebooting in 86400 seconds..