./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2274574012 <...> Warning: Permanently added '10.128.0.35' (ED25519) to the list of known hosts. execve("./syz-executor2274574012", ["./syz-executor2274574012"], 0x7ffd7bf61ac0 /* 10 vars */) = 0 brk(NULL) = 0x55557899f000 brk(0x55557899fd40) = 0x55557899fd40 arch_prctl(ARCH_SET_FS, 0x55557899f3c0) = 0 set_tid_address(0x55557899f690) = 282 set_robust_list(0x55557899f6a0, 24) = 0 rseq(0x55557899fce0, 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-executor2274574012", 4096) = 28 getrandom("\x49\xc6\xdb\xde\x0b\x35\xab\xee", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557899fd40 brk(0x5555789c0d40) = 0x5555789c0d40 brk(0x5555789c1000) = 0x5555789c1000 mprotect(0x7fa6b1165000, 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(0x7fa6b116b3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fa6b11043e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fa6b10f5a60}, 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) = 0x7fa6b1080000 mprotect(0x7fa6b1081000, 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=0x7fa6b10a0990, parent_tid=0x7fa6b10a0990, exit_signal=0, stack=0x7fa6b1080000, stack_size=0x20300, tls=0x7fa6b10a06c0} => {parent_tid=[283]}, 88) = 283 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7fa6b116b3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7fa6b116b3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 283 attached [pid 283] set_robust_list(0x7fa6b10a09a0, 24) = 0 [pid 283] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 283] mkdir("./file0", 000) = 0 [pid 283] futex(0x7fa6b116b3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fa6b116b3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fa6b116b3ec, 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(0x7fa6b116b3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fa6b116b3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fa6b116b3ec, 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(0x7fa6b116b3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fa6b116b3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fa6b116b3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [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(0x7fa6b116b3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fa6b116b3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fa6b116b3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [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\x1a\x00\x01\x08\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(0x7fa6b116b3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fa6b116b3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fa6b116b3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [ 25.951366][ T24] audit: type=1400 audit(1750413219.800:64): avc: denied { execmem } for pid=282 comm="syz-executor227" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.971590][ T24] audit: type=1400 audit(1750413219.810:65): avc: denied { read write } for pid=282 comm="syz-executor227" 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] read(3, [pid 282] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 282] futex(0x7fa6b116b3fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fa6b105f000 [pid 282] mprotect(0x7fa6b1060000, 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=0x7fa6b107f990, parent_tid=0x7fa6b107f990, exit_signal=0, stack=0x7fa6b105f000, stack_size=0x20300, tls=0x7fa6b107f6c0} => {parent_tid=[285]}, 88) = 285 [pid 282] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 282] futex(0x7fa6b116b3f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fa6b116b3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 285 attached [pid 285] set_robust_list(0x7fa6b107f9a0, 24) = 0 [pid 285] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 285] rename("./file0/../file0/file0", "./file0/../file0/file0" [pid 283] <... 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\x1d\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 283] write(3, "\xae\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\x00\x00\x00\x00\x01\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfd\xff\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00"..., 174) = 174 [pid 283] futex(0x7fa6b116b3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 25.995648][ T24] audit: type=1400 audit(1750413219.810:66): avc: denied { open } for pid=282 comm="syz-executor227" 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 [ 26.019164][ T24] audit: type=1400 audit(1750413219.810:67): avc: denied { mounton } for pid=282 comm="syz-executor227" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 26.042157][ T24] audit: type=1400 audit(1750413219.820:68): avc: denied { mount } for pid=282 comm="syz-executor227" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 26.047075][ T285] general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN [ 26.075946][ T285] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 26.084359][ T285] CPU: 0 PID: 285 Comm: syz-executor227 Not tainted 5.10.238-syzkaller-00282-gd76d4cd0623a #0 [ 26.094580][ T285] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 26.104710][ T285] RIP: 0010:do_renameat2+0x471/0xe60 [ 26.109990][ T285] Code: 89 c5 48 3d 01 f0 ff ff 72 0f e8 5a f3 ba ff 4c 8b 64 24 20 e9 6a 03 00 00 4d 89 ec 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 04 84 c0 0f 85 2f 05 00 00 41 8b 5d 00 be 00 00 70 00 [ 26.129607][ T285] RSP: 0018:ffffc90000b67d80 EFLAGS: 00010207 [ 26.135700][ T285] RAX: dffffc0000000000 RBX: 00000000ffffff9c RCX: ffff88811e0013c0 [ 26.143669][ T285] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88811e0013c0 [ 26.151626][ T285] RBP: ffffc90000b67f08 R08: dffffc0000000000 R09: ffffed1024184c2e [ 26.159583][ T285] R10: ffffed1024184c2e R11: 1ffff11024184c2d R12: 0000000000000003 [ 26.167541][ T285] R13: 000000000000001e R14: ffff8881206d3300 R15: 0000000000000001 [ 26.175500][ T285] FS: 00007fa6b107f6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 26.184406][ T285] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.190976][ T285] CR2: 0000556e6c324898 CR3: 0000000106de8000 CR4: 00000000003506b0 [ 26.198954][ T285] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.206932][ T285] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.214912][ T285] Call Trace: [ 26.218222][ T285] ? fsnotify_move+0x2a0/0x2a0 [ 26.222987][ T285] ? getname_flags+0x206/0x500 [ 26.227850][ T285] __x64_sys_rename+0x86/0x90 [ 26.232576][ T285] do_syscall_64+0x31/0x40 [ 26.237021][ T285] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 26.242912][ T285] RIP: 0033:0x7fa6b10de539 [ 26.247325][ 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 [ 26.266931][ T285] RSP: 002b:00007fa6b107f218 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [ 26.275444][ T285] RAX: ffffffffffffffda RBX: 00007fa6b116b3f8 RCX: 00007fa6b10de539 [ 26.283427][ T285] RDX: 00007fa6b10bbc96 RSI: 00002000000000c0 RDI: 0000200000000100 [ 26.291392][ T285] RBP: 00007fa6b116b3f0 R08: 00007fff121df697 R09: 0000000000000000 [pid 283] futex(0x7fa6b116b3e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 282] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 26.299360][ T285] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6b1138034 [ 26.307330][ T285] R13: 0000200000008280 R14: 0000200000000100 R15: 00007fff121df698 [ 26.315308][ T285] Modules linked in: [ 26.319950][ T285] ---[ end trace 1826db1548a8f167 ]--- [ 26.322674][ T24] audit: type=1400 audit(1750413220.170:69): 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 [ 26.325747][ T285] RIP: 0010:do_renameat2+0x471/0xe60 [ 26.347911][ T24] audit: type=1400 audit(1750413220.170:70): 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 [ 26.352509][ T285] Code: 89 c5 48 3d 01 f0 ff ff 72 0f e8 5a f3 ba ff 4c 8b 64 24 20 e9 6a 03 00 00 4d 89 ec 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 04 84 c0 0f 85 2f 05 00 00 41 8b 5d 00 be 00 00 70 00 [ 26.374059][ T24] audit: type=1400 audit(1750413220.170:71): 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 [ 26.393605][ T285] RSP: 0018:ffffc90000b67d80 EFLAGS: 00010207 [ 26.414999][ T24] audit: type=1400 audit(1750413220.170:72): 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 [ 26.420762][ T285] RAX: dffffc0000000000 RBX: 00000000ffffff9c RCX: ffff88811e0013c0 [ 26.441391][ T24] audit: type=1400 audit(1750413220.170:73): 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 [ 26.469609][ T285] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88811e0013c0 [ 26.469629][ T285] RBP: ffffc90000b67f08 R08: dffffc0000000000 R09: ffffed1024184c2e [ 26.485700][ T285] R10: ffffed1024184c2e R11: 1ffff11024184c2d R12: 0000000000000003 [ 26.493720][ T285] R13: 000000000000001e R14: ffff8881206d3300 R15: 0000000000000001 [ 26.501734][ T285] FS: 00007fa6b107f6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 26.510681][ T285] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.517395][ T285] CR2: 0000556e6c324898 CR3: 0000000106de8000 CR4: 00000000003506b0 [ 26.525414][ T285] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.533409][ T285] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.541419][ T285] Kernel panic - not syncing: Fatal exception [ 26.547756][ T285] Kernel Offset: disabled [ 26.552079][ T285] Rebooting in 86400 seconds..