./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor468241953 <...> [ 18.121677][ T24] audit: type=1400 audit(1755478057.630:62): avc: denied { rlimitinh } for pid=217 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 18.141063][ T24] audit: type=1400 audit(1755478057.630:63): avc: denied { siginh } for pid=217 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.21' (ED25519) to the list of known hosts. execve("./syz-executor468241953", ["./syz-executor468241953"], 0x7ffc327e2e30 /* 10 vars */) = 0 brk(NULL) = 0x55557b206000 brk(0x55557b206d40) = 0x55557b206d40 arch_prctl(ARCH_SET_FS, 0x55557b2063c0) = 0 set_tid_address(0x55557b206690) = 282 set_robust_list(0x55557b2066a0, 24) = 0 rseq(0x55557b206ce0, 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-executor468241953", 4096) = 27 getrandom("\x7a\x99\x86\xb9\x8d\xa1\x30\xf1", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557b206d40 brk(0x55557b227d40) = 0x55557b227d40 brk(0x55557b228000) = 0x55557b228000 mprotect(0x7fee64f86000, 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(0x7fee64f8c3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fee64f253a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fee64f16a20}, 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) = 0x7fee64ea1000 mprotect(0x7fee64ea2000, 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=0x7fee64ec1990, parent_tid=0x7fee64ec1990, exit_signal=0, stack=0x7fee64ea1000, stack_size=0x20300, tls=0x7fee64ec16c0} => {parent_tid=[283]}, 88) = 283 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7fee64f8c3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7fee64f8c3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 283 attached [pid 283] set_robust_list(0x7fee64ec19a0, 24) = 0 [pid 283] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 283] mkdirat(AT_FDCWD, "./file0", 0420) = 0 [pid 283] futex(0x7fee64f8c3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fee64f8c3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fee64f8c3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [pid 283] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 283] futex(0x7fee64f8c3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fee64f8c3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fee64f8c3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [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(0x7fee64f8c3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fee64f8c3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fee64f8c3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [ 26.993387][ T24] audit: type=1400 audit(1755478066.540:64): avc: denied { execmem } for pid=282 comm="syz-executor468" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 27.013415][ T24] audit: type=1400 audit(1755478066.550:65): avc: denied { read write } for pid=282 comm="syz-executor468" 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 [pid 283] rmdir("./file0/../file0/file0" [pid 282] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 282] futex(0x7fee64f8c3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 282] futex(0x7fee64f8c3fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fee64e80000 [pid 282] mprotect(0x7fee64e81000, 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=0x7fee64ea0990, parent_tid=0x7fee64ea0990, exit_signal=0, stack=0x7fee64e80000, stack_size=0x20300, tls=0x7fee64ea06c0} => {parent_tid=[285]}, 88) = 285 [pid 282] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 282] futex(0x7fee64f8c3f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fee64f8c3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 285 attached [pid 285] set_robust_list(0x7fee64ea09a0, 24) = 0 [pid 285] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 285] 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 285] futex(0x7fee64f8c3fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fee64f8c3f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fee64f8c3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 285] <... futex resumed>) = 1 [pid 285] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x2b\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", 80) = 80 [pid 285] futex(0x7fee64f8c3fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fee64f8c3f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fee64f8c3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 285] <... futex resumed>) = 1 [pid 285] read(3, "\x2e\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\x1b\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [ 27.037278][ T24] audit: type=1400 audit(1755478066.550:66): avc: denied { open } for pid=282 comm="syz-executor468" 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 [ 27.062144][ T24] audit: type=1400 audit(1755478066.550:67): avc: denied { mounton } for pid=282 comm="syz-executor468" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 27.063645][ T283] general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN [ 27.085887][ T24] audit: type=1400 audit(1755478066.550:68): avc: denied { mount } for pid=282 comm="syz-executor468" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 27.097155][ T283] KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] [ 27.097168][ T283] CPU: 1 PID: 283 Comm: syz-executor468 Not tainted 5.10.240-syzkaller #0 [ 27.097174][ T283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 27.097204][ T283] RIP: 0010:do_rmdir+0x1cf/0x620 [ 27.097215][ T283] Code: ff 72 0d e8 a3 32 bb ff 41 89 dc e9 80 00 00 00 48 89 5c 24 10 4c 8d 63 30 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 e7 e8 f3 21 f5 ff 49 83 3c 24 00 74 39 e8 [ 27.097222][ T283] RSP: 0018:ffffc90000ba7e40 EFLAGS: 00010202 [ 27.097233][ T283] RAX: 0000000000000007 RBX: 0000000000000009 RCX: dffffc0000000000 [pid 285] write(3, "\x99\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfd\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 153 [pid 282] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 285] <... write resumed>) = 153 [pid 285] futex(0x7fee64f8c3fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 27.097240][ T283] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88811d284f00 [ 27.097248][ T283] RBP: ffffc90000ba7f18 R08: dffffc0000000000 R09: ffffed10237ed8d8 [ 27.097255][ T283] R10: ffffed10237ed8d8 R11: 1ffff110237ed8d7 R12: 0000000000000039 [ 27.097262][ T283] R13: 1ffff110237ed8d2 R14: ffffc90000ba7ea0 R15: 00000000ffffff9c [ 27.097283][ T283] FS: 00007fee64ec16c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 27.121629][ T24] audit: type=1400 audit(1755478066.670:69): 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 [ 27.128510][ T283] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.137490][ T24] audit: type=1400 audit(1755478066.670:70): 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 [ 27.147526][ T283] CR2: 000020000000e000 CR3: 0000000106bc3000 CR4: 00000000003506a0 [ 27.147538][ T283] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.147545][ T283] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.147548][ T283] Call Trace: [ 27.147568][ T283] ? d_delete_notify+0xd0/0xd0 [ 27.147579][ T283] ? getname_flags+0x206/0x500 [ 27.147601][ T283] __x64_sys_rmdir+0x49/0x50 [pid 285] futex(0x7fee64f8c3f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 282] exit_group(0) = ? [pid 285] <... futex resumed>) = ? [pid 285] +++ exited with 0 +++ [ 27.153064][ T24] audit: type=1400 audit(1755478066.670:71): 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 [ 27.173360][ T283] do_syscall_64+0x31/0x40 [ 27.173373][ T283] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 27.173383][ T283] RIP: 0033:0x7fee64eff4f9 [ 27.173395][ T283] 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 [ 27.173402][ T283] RSP: 002b:00007fee64ec1218 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 [ 27.173436][ T283] RAX: ffffffffffffffda RBX: 00007fee64f8c3e8 RCX: 00007fee64eff4f9 [ 27.179805][ T24] audit: type=1400 audit(1755478066.670:72): 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 [ 27.187914][ T283] RDX: 00007fee64eff4f9 RSI: 00000000000f4240 RDI: 0000200000000040 [ 27.197077][ T24] audit: type=1400 audit(1755478066.670:73): avc: denied { create } for pid=77 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 27.205740][ T283] RBP: 00007fee64f8c3e0 R08: 0000000000000000 R09: 0000000000000000 [ 27.205748][ T283] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fee64f59034 [ 27.205755][ T283] R13: 000020000000c280 R14: 00007fee64f5700e R15: 0000200000000000 [ 27.205762][ T283] Modules linked in: [ 27.206809][ T283] ---[ end trace 5058801b78e05bc1 ]--- [ 27.490053][ T283] RIP: 0010:do_rmdir+0x1cf/0x620 [ 27.495076][ T283] Code: ff 72 0d e8 a3 32 bb ff 41 89 dc e9 80 00 00 00 48 89 5c 24 10 4c 8d 63 30 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 e7 e8 f3 21 f5 ff 49 83 3c 24 00 74 39 e8 [ 27.515418][ T283] RSP: 0018:ffffc90000ba7e40 EFLAGS: 00010202 [ 27.521676][ T283] RAX: 0000000000000007 RBX: 0000000000000009 RCX: dffffc0000000000 [ 27.529838][ T283] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88811d284f00 [ 27.537935][ T283] RBP: ffffc90000ba7f18 R08: dffffc0000000000 R09: ffffed10237ed8d8 [ 27.546459][ T283] R10: ffffed10237ed8d8 R11: 1ffff110237ed8d7 R12: 0000000000000039 [ 27.554822][ T283] R13: 1ffff110237ed8d2 R14: ffffc90000ba7ea0 R15: 00000000ffffff9c [ 27.563240][ T283] FS: 00007fee64ec16c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 27.573107][ T283] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.580412][ T283] CR2: 00007fee64f560d8 CR3: 0000000106bc3000 CR4: 00000000003506b0 [ 27.588840][ T283] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.597618][ T283] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.606259][ T283] Kernel panic - not syncing: Fatal exception [ 27.613046][ T283] Kernel Offset: disabled [ 27.618206][ T283] Rebooting in 86400 seconds..