./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3766818316 <...> Warning: Permanently added '10.128.0.234' (ED25519) to the list of known hosts. execve("./syz-executor3766818316", ["./syz-executor3766818316"], 0x7ffcdc50cc20 /* 10 vars */) = 0 brk(NULL) = 0x55557fc2d000 brk(0x55557fc2dd40) = 0x55557fc2dd40 arch_prctl(ARCH_SET_FS, 0x55557fc2d3c0) = 0 set_tid_address(0x55557fc2d690) = 288 set_robust_list(0x55557fc2d6a0, 24) = 0 rseq(0x55557fc2dce0, 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-executor3766818316", 4096) = 28 getrandom("\x1b\xff\x6c\x36\x45\x05\x22\xbd", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557fc2dd40 brk(0x55557fc4ed40) = 0x55557fc4ed40 brk(0x55557fc4f000) = 0x55557fc4f000 mprotect(0x7fdd9fb6c000, 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(0x7fdd9fb723ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fdd9fb0b4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fdd9fafcb60}, 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) = 0x7fdd9fa87000 mprotect(0x7fdd9fa88000, 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=0x7fdd9faa7990, parent_tid=0x7fdd9faa7990, exit_signal=0, stack=0x7fdd9fa87000, stack_size=0x20300, tls=0x7fdd9faa76c0} => {parent_tid=[289]}, 88) = 289 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7fdd9fb723e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 289 attached [pid 288] futex(0x7fdd9fb723ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] set_robust_list(0x7fdd9faa79a0, 24) = 0 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 289] futex(0x7fdd9fb723ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 289] <... futex resumed>) = 1 [pid 288] futex(0x7fdd9fb723e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7fdd9fb723ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... openat resumed>) = 3 [pid 289] futex(0x7fdd9fb723ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 289] <... futex resumed>) = 1 [pid 288] futex(0x7fdd9fb723e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] mount(NULL, "./file0", "fuse", 0, "fd=00000000000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=000"... [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7fdd9fb723ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... mount resumed>) = 0 [pid 289] futex(0x7fdd9fb723ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7fdd9fb723e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7fdd9fb723ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] read(3, "\x68\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\x24\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x73\x01\x00\x00\x80\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"..., 8224) = 104 [pid 289] futex(0x7fdd9fb723ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7fdd9fb723e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7fdd9fb723ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] 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 289] futex(0x7fdd9fb723ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7fdd9fb723e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7fdd9fb723ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [ 22.976850][ T30] audit: type=1400 audit(1756086299.278:64): avc: denied { execmem } for pid=288 comm="syz-executor376" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.999640][ T30] audit: type=1400 audit(1756086299.298:65): avc: denied { read write } for pid=288 comm="syz-executor376" name="fuse" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [pid 289] read(3, [pid 288] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 288] futex(0x7fdd9fb723ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 288] futex(0x7fdd9fb723fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fdd9fa66000 [pid 288] mprotect(0x7fdd9fa67000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 288] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 288] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fdd9fa86990, parent_tid=0x7fdd9fa86990, exit_signal=0, stack=0x7fdd9fa66000, stack_size=0x20300, tls=0x7fdd9fa866c0} => {parent_tid=[291]}, 88) = 291 [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] futex(0x7fdd9fb723f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7fdd9fb723fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000}./strace-static-x86_64: Process 291 attached [pid 291] set_robust_list(0x7fdd9fa869a0, 24) = 0 [pid 291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 291] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=10, insns=0x200000000680, license=NULL, log_level=4, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL, ...}, 148) = -1 E2BIG (Argument list too long) [pid 291] futex(0x7fdd9fb723fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7fdd9fb723f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7fdd9fb723fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] lremovexattr("./file0/../file0/file0", NULL [pid 289] <... read resumed>"\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\x23\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 289] write(3, "\x95\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x11\x00\x00\x00\x0a\x00\x00\x00\x80\x06\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 149) = 149 [pid 289] futex(0x7fdd9fb723ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 23.023220][ T30] audit: type=1400 audit(1756086299.298:66): avc: denied { open } for pid=288 comm="syz-executor376" path="/dev/fuse" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 23.046670][ T30] audit: type=1400 audit(1756086299.308:67): avc: denied { mounton } for pid=288 comm="syz-executor376" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.068882][ T291] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 23.070428][ T30] audit: type=1400 audit(1756086299.308:68): avc: denied { mount } for pid=288 comm="syz-executor376" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 23.081854][ T291] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 23.081869][ T291] CPU: 0 PID: 291 Comm: syz-executor376 Not tainted 5.15.189-syzkaller-android13-5.15.189_r00 #0 [ 23.081891][ T291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 23.081902][ T291] RIP: 0010:step_into+0x12e/0xd10 [ 23.105512][ T30] audit: type=1400 audit(1756086299.408:69): avc: denied { read } for pid=83 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 [ 23.112448][ T291] Code: 4c 8b 74 24 18 c6 44 24 7f 00 43 0f b6 44 25 00 84 c0 0f 85 6f 0a 00 00 45 8b 36 4c 8b bc 24 a8 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 6e 0a 00 00 45 8b 3f 44 89 fe 81 e6 00 [ 23.112467][ T291] RSP: 0018:ffffc900009f78c0 EFLAGS: 00010247 [ 23.112485][ T291] RAX: 0000000000000000 RBX: ffffc900009f7b00 RCX: ffff8881063ae2c0 [ 23.112499][ T291] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 23.112510][ T291] RBP: ffffc900009f79c8 R08: 0000000000000000 R09: ffffed10240c2815 [ 23.123415][ T30] audit: type=1400 audit(1756086299.408:70): avc: denied { search } for pid=83 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 [ 23.133056][ T291] R10: ffffed10240c2815 R11: 1ffff110240c2814 R12: dffffc0000000000 [ 23.133073][ T291] R13: 1ffff9200013ef67 R14: 0000000000000000 R15: 0000000000000005 [ 23.133086][ T291] FS: 00007fdd9fa866c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.133109][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.138535][ T30] audit: type=1400 audit(1756086299.408:71): avc: denied { write } for pid=83 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 [ 23.159732][ T291] CR2: 000055d71a116eb8 CR3: 000000012406d000 CR4: 00000000003506b0 [ 23.159753][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.159765][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.159777][ T291] Call Trace: [ 23.159783][ T291] [ 23.159790][ T291] ? down_read+0xa5/0xf0 [ 23.159813][ T291] ? set_root+0x400/0x400 [ 23.179994][ T30] audit: type=1400 audit(1756086299.408:72): avc: denied { add_name } for pid=83 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 23.185486][ T291] ? up_read+0x56/0x1d0 [ 23.185512][ T291] walk_component+0x26a/0x460 [ 23.194112][ T30] audit: type=1400 audit(1756086299.408:73): avc: denied { create } for pid=83 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 23.201788][ T291] path_lookupat+0x180/0x490 [ 23.201828][ T291] filename_lookup+0x1e2/0x4f0 [ 23.381167][ T291] ? hashlen_string+0x120/0x120 [ 23.386037][ T291] user_path_at_empty+0x47/0x1c0 [ 23.390981][ T291] path_removexattr+0xb3/0x3b0 [ 23.395819][ T291] ? listxattr+0x300/0x300 [ 23.400234][ T291] ? ptrace_stop+0x6f4/0xa80 [ 23.404820][ T291] ? _raw_spin_unlock_irq+0x4e/0x70 [ 23.410017][ T291] ? ptrace_notify+0x1c4/0x250 [ 23.414781][ T291] ? do_notify_parent+0x800/0x800 [ 23.419802][ T291] ? __kasan_check_write+0x14/0x20 [ 23.424910][ T291] ? switch_fpu_return+0x15d/0x2c0 [ 23.430020][ T291] __x64_sys_lremovexattr+0x5d/0x70 [ 23.435216][ T291] x64_sys_call+0x220/0x9a0 [ 23.439721][ T291] do_syscall_64+0x4c/0xa0 [ 23.444131][ T291] ? clear_bhb_loop+0x50/0xa0 [ 23.448813][ T291] ? clear_bhb_loop+0x50/0xa0 [ 23.453600][ T291] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 23.459493][ T291] RIP: 0033:0x7fdd9fae5639 [ 23.463905][ T291] 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 [ 23.483508][ T291] RSP: 002b:00007fdd9fa86218 EFLAGS: 00000246 ORIG_RAX: 00000000000000c6 [ 23.492004][ T291] RAX: ffffffffffffffda RBX: 00007fdd9fb723f8 RCX: 00007fdd9fae5639 [ 23.499986][ T291] RDX: 00007fdd9fae5639 RSI: 0000000000000000 RDI: 0000200000000580 [ 23.507969][ T291] RBP: 00007fdd9fb723f0 R08: 0000000000000000 R09: 0000000000000000 [ 23.515946][ T291] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdd9fb3f02c [pid 289] futex(0x7fdd9fb723e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 288] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 23.523926][ T291] R13: 000020000000c280 R14: 0000200000000580 R15: 00007fffe7e6f178 [ 23.531921][ T291] [ 23.534935][ T291] Modules linked in: [ 23.539774][ T291] ---[ end trace 8fdd118db1357603 ]--- [ 23.545434][ T291] RIP: 0010:step_into+0x12e/0xd10 [ 23.550486][ T291] Code: 4c 8b 74 24 18 c6 44 24 7f 00 43 0f b6 44 25 00 84 c0 0f 85 6f 0a 00 00 45 8b 36 4c 8b bc 24 a8 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 6e 0a 00 00 45 8b 3f 44 89 fe 81 e6 00 [ 23.570134][ T291] RSP: 0018:ffffc900009f78c0 EFLAGS: 00010247 [ 23.576255][ T291] RAX: 0000000000000000 RBX: ffffc900009f7b00 RCX: ffff8881063ae2c0 [ 23.584285][ T291] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 23.592287][ T291] RBP: ffffc900009f79c8 R08: 0000000000000000 R09: ffffed10240c2815 [ 23.600275][ T291] R10: ffffed10240c2815 R11: 1ffff110240c2814 R12: dffffc0000000000 [ 23.608277][ T291] R13: 1ffff9200013ef67 R14: 0000000000000000 R15: 0000000000000005 [ 23.616282][ T291] FS: 00007fdd9fa866c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [pid 288] exit_group(0) = ? [pid 289] <... futex resumed>) = ? [pid 289] +++ exited with 0 +++ [ 23.625253][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.631879][ T291] CR2: 000055d71a116eb8 CR3: 000000012406d000 CR4: 00000000003506b0 [ 23.639864][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.647882][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.655900][ T291] Kernel panic - not syncing: Fatal exception [ 23.662171][ T291] Kernel Offset: disabled [ 23.666702][ T291] Rebooting in 86400 seconds..