./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3650984450 <...> Warning: Permanently added '10.128.1.85' (ED25519) to the list of known hosts. execve("./syz-executor3650984450", ["./syz-executor3650984450"], 0x7ffccbb7f880 /* 10 vars */) = 0 brk(NULL) = 0x55556222b000 brk(0x55556222bd40) = 0x55556222bd40 arch_prctl(ARCH_SET_FS, 0x55556222b3c0) = 0 set_tid_address(0x55556222b690) = 282 set_robust_list(0x55556222b6a0, 24) = 0 rseq(0x55556222bce0, 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-executor3650984450", 4096) = 28 getrandom("\x4b\xad\x95\xe4\x69\x39\xd6\x34", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556222bd40 brk(0x55556224cd40) = 0x55556224cd40 brk(0x55556224d000) = 0x55556224d000 mprotect(0x7f34c3ca7000, 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 executing program write(1, "executing program\n", 18) = 18 futex(0x7f34c3cad3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f34c3c463a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f34c3c37a20}, 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) = 0x7f34c3bc2000 mprotect(0x7f34c3bc3000, 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=0x7f34c3be2990, parent_tid=0x7f34c3be2990, exit_signal=0, stack=0x7f34c3bc2000, stack_size=0x20300, tls=0x7f34c3be26c0}./strace-static-x86_64: Process 283 attached [pid 283] set_robust_list(0x7f34c3be29a0, 24) = 0 [pid 283] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 283] futex(0x7f34c3cad3e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 282] <... clone3 resumed> => {parent_tid=[283]}, 88) = 283 [pid 282] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 282] futex(0x7f34c3cad3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 283] <... futex resumed>) = 0 [pid 283] mkdir("./file0", 000 [pid 282] futex(0x7f34c3cad3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... mkdir resumed>) = 0 [pid 283] futex(0x7f34c3cad3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 283] <... futex resumed>) = 1 [pid 282] futex(0x7f34c3cad3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7f34c3cad3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 283] futex(0x7f34c3cad3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 283] futex(0x7f34c3cad3e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7f34c3cad3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 282] futex(0x7f34c3cad3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 0 [pid 283] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=00000000"...) = 0 [pid 283] futex(0x7f34c3cad3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7f34c3cad3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7f34c3cad3ec, 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(0x7f34c3cad3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7f34c3cad3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7f34c3cad3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [ 25.126303][ T24] audit: type=1400 audit(1755482181.970:64): avc: denied { execmem } for pid=282 comm="syz-executor365" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.153001][ T24] audit: type=1400 audit(1755482182.000:65): avc: denied { read write } for pid=282 comm="syz-executor365" 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 [ 25.176764][ T24] audit: type=1400 audit(1755482182.000:66): avc: denied { open } for pid=282 comm="syz-executor365" 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 [ 25.200225][ T24] audit: type=1400 audit(1755482182.020:67): avc: denied { mounton } for pid=282 comm="syz-executor365" 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] mknod("./file0/../file0/file0", S_IFREG|000 [pid 282] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 282] futex(0x7f34c3cad3fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f34c3ba1000 [pid 282] mprotect(0x7f34c3ba2000, 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=0x7f34c3bc1990, parent_tid=0x7f34c3bc1990, exit_signal=0, stack=0x7f34c3ba1000, stack_size=0x20300, tls=0x7f34c3bc16c0}./strace-static-x86_64: Process 285 attached [pid 285] set_robust_list(0x7f34c3bc19a0, 24) = 0 [pid 285] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 285] futex(0x7f34c3cad3f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 282] <... clone3 resumed> => {parent_tid=[285]}, 88) = 285 [pid 282] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 282] futex(0x7f34c3cad3f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 282] futex(0x7f34c3cad3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 285] <... futex resumed>) = 0 [pid 285] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x28\x00\x00\x00\x00\x00\x00\x00\x60\x80\x48\x40\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x6f\x08\x89\xa9\xfc\xff\xff\xff\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(0x7f34c3cad3fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7f34c3cad3f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7f34c3cad3fc, 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 [pid 285] write(3, "\x9d\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\xfc\xff\xff\xff\xff\xff\xff\xff\x00\x02\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\xff\xff\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x01\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01"..., 157) = 157 [pid 285] futex(0x7f34c3cad3fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 285] futex(0x7f34c3cad3f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 282] <... futex resumed>) = 0 [ 25.222902][ T24] audit: type=1400 audit(1755482182.020:68): avc: denied { mount } for pid=282 comm="syz-executor365" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 25.247455][ T283] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 25.259280][ T283] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 25.267713][ T283] CPU: 1 PID: 283 Comm: syz-executor365 Not tainted 5.10.240-syzkaller #0 [ 25.276197][ T283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 25.286286][ T283] RIP: 0010:filename_create+0x201/0x680 [ 25.291864][ T283] Code: 48 3d 01 f0 ff ff 72 11 e8 6c 57 bb ff 49 bd 00 00 00 00 00 fc ff df eb 5c 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 e7 03 00 00 41 8b 1e 89 de 81 e6 00 00 70 [ 25.311475][ T283] RSP: 0018:ffffc90000b17d80 EFLAGS: 00010203 [ 25.317541][ T283] RAX: 0000000000000001 RBX: 0000000000000600 RCX: dffffc0000000000 [pid 282] exit_group(0) = ? [pid 285] <... futex resumed>) = ? [pid 285] +++ exited with 0 +++ [ 25.325516][ T283] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888104bc13c0 [ 25.333749][ T283] RBP: ffffc90000b17e78 R08: dffffc0000000000 R09: ffffed102428011c [ 25.341734][ T283] R10: ffffed102428011c R11: 1ffff1102428011b R12: ffffc90000b17ec0 [ 25.349795][ T283] R13: ffffc90000b17ec0 R14: 000000000000000d R15: ffffc90000b17ec8 [ 25.357764][ T283] FS: 00007f34c3be26c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.366699][ T283] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.373318][ T283] CR2: 000020000000c000 CR3: 0000000120c41000 CR4: 00000000003506a0 [ 25.381403][ T283] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.389366][ T283] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.397321][ T283] Call Trace: [ 25.400612][ T283] ? __check_object_size+0x2f4/0x3c0 [ 25.405979][ T283] ? kern_path_create+0x40/0x40 [ 25.410814][ T283] ? getname_flags+0x206/0x500 [ 25.415561][ T283] do_mknodat+0xcf/0x5a0 [ 25.419815][ T283] ? fpu__clear_all+0x20/0x20 [ 25.424480][ T283] ? debug_smp_processor_id+0x17/0x20 [ 25.429927][ T283] __x64_sys_mknod+0x80/0x90 [ 25.434510][ T283] do_syscall_64+0x31/0x40 [ 25.438929][ T283] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.444805][ T283] RIP: 0033:0x7f34c3c204f9 [ 25.449230][ 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 [ 25.468841][ T283] RSP: 002b:00007f34c3be2218 EFLAGS: 00000246 ORIG_RAX: 0000000000000085 [ 25.477252][ T283] RAX: ffffffffffffffda RBX: 00007f34c3cad3e8 RCX: 00007f34c3c204f9 [ 25.485246][ T283] RDX: 0000000000000700 RSI: 00000000ffff8000 RDI: 00002000000002c0 [ 25.493214][ T283] RBP: 00007f34c3cad3e0 R08: 0000000000000000 R09: 0000000000000000 [ 25.501179][ T283] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f34c3c7a034 [ 25.509167][ T283] R13: 000020000000a280 R14: 00007f34c3c7800e R15: 0000200000000000 [ 25.517136][ T283] Modules linked in: [ 25.521374][ T283] ---[ end trace 5d597f704811e678 ]--- [ 25.524452][ T24] audit: type=1400 audit(1755482182.370:69): 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 [ 25.526884][ T283] RIP: 0010:filename_create+0x201/0x680 [ 25.526903][ T283] Code: 48 3d 01 f0 ff ff 72 11 e8 6c 57 bb ff 49 bd 00 00 00 00 00 fc ff df eb 5c 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 e7 03 00 00 41 8b 1e 89 de 81 e6 00 00 70 [ 25.548769][ T24] audit: type=1400 audit(1755482182.370:70): 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 [ 25.554078][ T283] RSP: 0018:ffffc90000b17d80 EFLAGS: 00010203 [ 25.573976][ T24] audit: type=1400 audit(1755482182.370:71): 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 [ 25.594944][ T283] [ 25.601276][ T24] audit: type=1400 audit(1755482182.370:72): 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 [ 25.622136][ T283] RAX: 0000000000000001 RBX: 0000000000000600 RCX: dffffc0000000000 [ 25.622151][ T283] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888104bc13c0 [ 25.624743][ T24] audit: type=1400 audit(1755482182.370:73): 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 [ 25.644897][ T283] RBP: ffffc90000b17e78 R08: dffffc0000000000 R09: ffffed102428011c [ 25.644917][ T283] R10: ffffed102428011c R11: 1ffff1102428011b R12: ffffc90000b17ec0 [ 25.697229][ T283] R13: ffffc90000b17ec0 R14: 000000000000000d R15: ffffc90000b17ec8 [ 25.705223][ T283] FS: 00007f34c3be26c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.714287][ T283] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.720901][ T283] CR2: 000020000000c000 CR3: 0000000120c41000 CR4: 00000000003506a0 [ 25.728911][ T283] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.736939][ T283] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.744907][ T283] Kernel panic - not syncing: Fatal exception [ 25.751285][ T283] Kernel Offset: disabled [ 25.755694][ T283] Rebooting in 86400 seconds..