./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor32404699

<...>
cess permissive=1
[   17.560525][   T24] audit: type=1400 audit(1749558692.080:63): avc:  denied  { siginh } for  pid=231 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
Warning: Permanently added '10.128.1.47' (ED25519) to the list of known hosts.
execve("./syz-executor32404699", ["./syz-executor32404699"], 0x7ffe1f1f8ed0 /* 10 vars */) = 0
brk(NULL)                               = 0x55556c291000
brk(0x55556c291d40)                     = 0x55556c291d40
arch_prctl(ARCH_SET_FS, 0x55556c2913c0) = 0
set_tid_address(0x55556c291690)         = 282
set_robust_list(0x55556c2916a0, 24)     = 0
rseq(0x55556c291ce0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented)
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor32404699", 4096) = 26
getrandom("\xfe\x89\xbd\x44\xfe\xda\x0f\x33", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55556c291d40
brk(0x55556c2b2d40)                     = 0x55556c2b2d40
brk(0x55556c2b3000)                     = 0x55556c2b3000
mprotect(0x7f24ef6be000, 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
write(1, "executing program\n", 18executing program
)     = 18
futex(0x7f24ef6c440c, FUTEX_WAKE_PRIVATE, 1000000) = 0
rt_sigaction(SIGRT_1, {sa_handler=0x7f24ef65d420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f24ef64eaa0}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f24ef5d9000
mprotect(0x7f24ef5da000, 131072, PROT_READ|PROT_WRITE) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [], 8)   = 0
clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f24ef5f9990, parent_tid=0x7f24ef5f9990, exit_signal=0, stack=0x7f24ef5d9000, stack_size=0x20300, tls=0x7f24ef5f96c0} => {parent_tid=[283]}, 88) = 283
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
futex(0x7f24ef6c4408, FUTEX_WAKE_PRIVATE, 1000000) = 0
futex(0x7f24ef6c440c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 283 attached
 <unfinished ...>
[pid   283] set_robust_list(0x7f24ef5f99a0, 24) = 0
[pid   283] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   283] mkdir("./file0", 000)       = 0
[pid   283] futex(0x7f24ef6c440c, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid   282] <... futex resumed>)        = 0
[pid   282] futex(0x7f24ef6c4408, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid   282] futex(0x7f24ef6c440c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid   283] <... futex resumed>)        = 1
[pid   283] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3
[pid   283] futex(0x7f24ef6c440c, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid   282] <... futex resumed>)        = 0
[pid   282] futex(0x7f24ef6c4408, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid   282] futex(0x7f24ef6c440c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid   283] <... futex resumed>)        = 1
[pid   283] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=00000000"...) = 0
[pid   283] futex(0x7f24ef6c440c, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid   282] <... futex resumed>)        = 0
[pid   282] futex(0x7f24ef6c4408, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid   282] futex(0x7f24ef6c440c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid   283] <... futex resumed>)        = 1
[pid   283] read(3, "\x38\x00\x00\x00\x1a\x00\x00\x00\x02\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\x07\x00\x00\x00\x20\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x83", 8224) = 56
[pid   283] futex(0x7f24ef6c440c, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid   282] <... futex resumed>)        = 0
[pid   282] futex(0x7f24ef6c4408, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid   282] futex(0x7f24ef6c440c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid   283] <... futex resumed>)        = 1
[pid   283] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x27\x00\x00\x00\x00\x00\x00\x00\x08\x04\x41\x44\x6d\x06\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x40\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", 80) = 80
[pid   283] futex(0x7f24ef6c440c, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid   282] <... futex resumed>)        = 0
[pid   282] futex(0x7f24ef6c4408, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid   282] futex(0x7f24ef6c440c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid   283] <... futex resumed>)        = 1
[   27.367197][   T24] audit: type=1400 audit(1749558701.930:64): avc:  denied  { execmem } for  pid=282 comm="syz-executor324" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   27.387090][   T24] audit: type=1400 audit(1749558701.940:65): avc:  denied  { read write } for  pid=282 comm="syz-executor324" name="fuse" dev="devtmpfs" ino=90 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1
[   27.411465][   T24] audit: type=1400 audit(1749558701.940:66): avc:  denied  { open } for  pid=282 comm="syz-executor324" path="/dev/fuse" dev="devtmpfs" ino=90 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1
[   27.434900][   T24] audit: type=1400 audit(1749558701.940:67): avc:  denied  { mounton } for  pid=282 comm="syz-executor324" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[pid   283] read(3,  <unfinished ...>
[pid   282] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid   282] futex(0x7f24ef6c441c, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid   282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f24ef5b8000
[pid   282] mprotect(0x7f24ef5b9000, 131072, PROT_READ|PROT_WRITE) = 0
[pid   282] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid   282] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f24ef5d8990, parent_tid=0x7f24ef5d8990, exit_signal=0, stack=0x7f24ef5b8000, stack_size=0x20300, tls=0x7f24ef5d86c0} => {parent_tid=[285]}, 88) = 285
[pid   282] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   282] futex(0x7f24ef6c4418, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid   282] futex(0x7f24ef6c441c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 285 attached
 <unfinished ...>
[pid   285] set_robust_list(0x7f24ef5d89a0, 24) = 0
[pid   285] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   285] mount("./file0", "./file0", "incremental-fs", 0, NULL <unfinished ...>
[pid   283] <... read resumed>"\x2f\x00\x00\x00\x01\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1d\x01\x00\x00\x00\x00\x00\x00\x2e\x69\x6e\x64\x65\x78\x00", 8192) = 47
[pid   283] write(3, "\x95\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x01\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x01\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\x05\x00\x00"..., 149) = 149
[pid   283] futex(0x7f24ef6c440c, FUTEX_WAKE_PRIVATE, 1000000) = 0
[   27.457607][   T24] audit: type=1400 audit(1749558701.950:68): avc:  denied  { mount } for  pid=282 comm="syz-executor324" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1
[   27.459987][  T285] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
[   27.480761][   T24] audit: type=1400 audit(1749558702.020:69): avc:  denied  { mounton } for  pid=282 comm="syz-executor324" path="/root/file0" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=dir permissive=1
[   27.492068][  T285] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
[   27.492092][  T285] CPU: 0 PID: 285 Comm: syz-executor324 Not tainted 5.10.238-syzkaller-00282-gd76d4cd0623a #0
[   27.492098][  T285] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[   27.492133][  T285] RIP: 0010:open_or_create_special_dir+0x89/0x1d0
[   27.492152][  T285] Code: e8 5c 55 6d ff e9 00 01 00 00 e8 52 55 6d ff 48 c7 c3 ea ff ff ff e9 ef 00 00 00 4c 89 6d d0 4c 8d 6b 30 4d 89 ef 49 c1 ef 03 <43> 80 3c 37 00 74 08 4c 89 ef e8 88 45 a7 ff 49 83 7d 00 00 74 26
[   27.516521][   T24] audit: type=1400 audit(1749558702.080:70): avc:  denied  { read } for  pid=77 comm="syslogd" name="log" dev="sda1" ino=2010 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1
[   27.523653][  T285] RSP: 0018:ffffc90000be7b38 EFLAGS: 00010207
[   27.533956][   T24] audit: type=1400 audit(1749558702.080:71): avc:  denied  { search } for  pid=77 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1
[   27.543915][  T285] 
[   27.543925][  T285] RAX: 0000000000000005 RBX: 0000000000000005 RCX: ffff8881059cbb40
[   27.543932][  T285] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88812186e920
[   27.543940][  T285] RBP: ffffc90000be7b70 R08: dffffc0000000000 R09: ffffed102430dd25
[   27.543948][  T285] R10: ffffed102430dd25 R11: 1ffff1102430dd24 R12: ffff88812186e880
[   27.543963][  T285] R13: 0000000000000035 R14: dffffc0000000000 R15: 0000000000000006
[   27.550891][   T24] audit: type=1400 audit(1749558702.080:72): avc:  denied  { write } for  pid=77 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1
[   27.569954][  T285] FS:  00007f24ef5d86c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   27.569962][  T285] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.569970][  T285] CR2: 00007f24ef5d8d58 CR3: 000000011f623000 CR4: 00000000003506b0
[   27.569980][  T285] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   27.569987][  T285] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   27.570000][  T285] Call Trace:
[   27.592080][   T24] audit: type=1400 audit(1749558702.080:73): avc:  denied  { add_name } for  pid=77 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1
[   27.597660][  T285]  incfs_mount_fs+0x434/0x8c0
[   27.597673][  T285]  ? incfs_unlink+0x80/0x80
[   27.597693][  T285]  ? vfs_parse_fs_string+0xfe/0x160
[   27.760384][  T285]  legacy_get_tree+0xed/0x190
[   27.765051][  T285]  ? incfs_unlink+0x80/0x80
[   27.769547][  T285]  vfs_get_tree+0x89/0x260
[   27.773943][  T285]  do_new_mount+0x25a/0xa20
[   27.778432][  T285]  path_mount+0x572/0xc80
[   27.782744][  T285]  __se_sys_mount+0x318/0x380
[   27.787409][  T285]  ? do_notify_parent+0x7e0/0x7e0
[   27.792493][  T285]  ? __x64_sys_mount+0xd0/0xd0
[   27.797260][  T285]  ? fpu__clear_all+0x20/0x20
[   27.802051][  T285]  ? fpu__clear_all+0x20/0x20
[   27.806724][  T285]  __x64_sys_mount+0xbf/0xd0
[   27.811304][  T285]  do_syscall_64+0x31/0x40
[   27.815711][  T285]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   27.821597][  T285] RIP: 0033:0x7f24ef637579
[   27.825997][  T285] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 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 b0 ff ff ff f7 d8 64 89 01 48
[   27.845690][  T285] RSP: 002b:00007f24ef5d8218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   27.854212][  T285] RAX: ffffffffffffffda RBX: 00007f24ef6c4418 RCX: 00007f24ef637579
[pid   283] futex(0x7f24ef6c4408, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid   282] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid   282] futex(0x7f24ef6c4408, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid   283] <... futex resumed>)        = 0
[pid   282] futex(0x7f24ef6c440c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid   283] bpf(BPF_PROG_LOAD, NULL, 0) = -1 EFAULT (Bad address)
[pid   283] futex(0x7f24ef6c440c, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid   282] <... futex resumed>)        = 0
[pid   283] <... futex resumed>)        = 1
[   27.862176][  T285] RDX: 0000200000000180 RSI: 0000200000000080 RDI: 0000200000000000
[   27.870130][  T285] RBP: 00007f24ef6c4410 R08: 0000000000000000 R09: 0000000000000000
[   27.878083][  T285] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f24ef691034
[   27.886042][  T285] R13: 0000200000008280 R14: 0000200000000000 R15: 00007ffe8e0ee7f8
[   27.894028][  T285] Modules linked in:
[   27.899334][  T285] ---[ end trace 082f3ee68ae255c0 ]---
[   27.904854][  T285] RIP: 0010:open_or_create_special_dir+0x89/0x1d0
[   27.911305][  T285] Code: e8 5c 55 6d ff e9 00 01 00 00 e8 52 55 6d ff 48 c7 c3 ea ff ff ff e9 ef 00 00 00 4c 89 6d d0 4c 8d 6b 30 4d 89 ef 49 c1 ef 03 <43> 80 3c 37 00 74 08 4c 89 ef e8 88 45 a7 ff 49 83 7d 00 00 74 26
[   27.930972][  T285] RSP: 0018:ffffc90000be7b38 EFLAGS: 00010207
[   27.937074][  T285] RAX: 0000000000000005 RBX: 0000000000000005 RCX: ffff8881059cbb40
[   27.945252][  T285] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88812186e920
[   27.957719][  T285] RBP: ffffc90000be7b70 R08: dffffc0000000000 R09: ffffed102430dd25
[pid   283] futex(0x7f24ef6c4408, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid   282] exit_group(0)               = ?
[pid   283] <... futex resumed>)        = ?
[pid   283] +++ exited with 0 +++
[   27.965723][  T285] R10: ffffed102430dd25 R11: 1ffff1102430dd24 R12: ffff88812186e880
[   27.973687][  T285] R13: 0000000000000035 R14: dffffc0000000000 R15: 0000000000000006
[   27.981681][  T285] FS:  00007f24ef5d86c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   27.991078][  T285] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.997683][  T285] CR2: 000055c4ccda0060 CR3: 000000011f623000 CR4: 00000000003506a0
[   28.005671][  T285] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   28.013647][  T285] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   28.021660][  T285] Kernel panic - not syncing: Fatal exception
[   28.027831][  T285] Kernel Offset: disabled
[   28.032176][  T285] Rebooting in 86400 seconds..