./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2113168957 <...> Warning: Permanently added '10.128.1.11' (ED25519) to the list of known hosts. execve("./syz-executor2113168957", ["./syz-executor2113168957"], 0x7fff30203a40 /* 10 vars */) = 0 brk(NULL) = 0x5555738f9000 brk(0x5555738f9d40) = 0x5555738f9d40 arch_prctl(ARCH_SET_FS, 0x5555738f93c0) = 0 set_tid_address(0x5555738f9690) = 282 set_robust_list(0x5555738f96a0, 24) = 0 rseq(0x5555738f9ce0, 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-executor2113168957", 4096) = 28 getrandom("\x98\x72\xab\xa0\xac\x87\xc2\x7a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555738f9d40 brk(0x55557391ad40) = 0x55557391ad40 brk(0x55557391b000) = 0x55557391b000 mprotect(0x7fa8520a3000, 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(0x7fa8520a940c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fa8520423a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fa852033a20}, 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) = 0x7fa851fbe000 mprotect(0x7fa851fbf000, 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=0x7fa851fde990, parent_tid=0x7fa851fde990, exit_signal=0, stack=0x7fa851fbe000, stack_size=0x20300, tls=0x7fa851fde6c0} => {parent_tid=[283]}, 88) = 283 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7fa8520a9408, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7fa8520a940c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 283 attached [pid 283] set_robust_list(0x7fa851fde9a0, 24) = 0 [pid 283] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 283] mkdir("./file0", 000) = 0 [pid 283] futex(0x7fa8520a940c, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 283] <... futex resumed>) = 1 [pid 283] futex(0x7fa8520a9408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 282] futex(0x7fa8520a9408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 282] futex(0x7fa8520a940c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 0 [pid 283] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 283] futex(0x7fa8520a940c, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fa8520a9408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fa8520a940c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [pid 283] mount(NULL, "./file0", "fuse", 0, "fd=00000000000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=000"...) = 0 [pid 283] futex(0x7fa8520a940c, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fa8520a9408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fa8520a940c, 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(0x7fa8520a940c, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fa8520a9408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fa8520a940c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [pid 283] write(3, "\x18\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00", 24) = 24 [pid 283] futex(0x7fa8520a940c, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7fa8520a9408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fa8520a940c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [ 22.317107][ T24] audit: type=1400 audit(1755992818.889:64): avc: denied { execmem } for pid=282 comm="syz-executor211" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.341920][ T24] audit: type=1400 audit(1755992818.919:65): avc: denied { read write } for pid=282 comm="syz-executor211" 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] rename("./file0/../file0/file0", "./file0/../file0/file0" [pid 282] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 282] futex(0x7fa8520a941c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fa851f9d000 [pid 282] mprotect(0x7fa851f9e000, 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=0x7fa851fbd990, parent_tid=0x7fa851fbd990, exit_signal=0, stack=0x7fa851f9d000, stack_size=0x20300, tls=0x7fa851fbd6c0} => {parent_tid=[285]}, 88) = 285 [pid 282] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 282] futex(0x7fa8520a9418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7fa8520a941c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 285 attached [pid 285] set_robust_list(0x7fa851fbd9a0, 24) = 0 [pid 285] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [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 [ 22.366231][ T24] audit: type=1400 audit(1755992818.919:66): avc: denied { open } for pid=282 comm="syz-executor211" 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 [ 22.390226][ T24] audit: type=1400 audit(1755992818.919:67): avc: denied { mounton } for pid=282 comm="syz-executor211" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.397821][ T283] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 22.414163][ T24] audit: type=1400 audit(1755992818.919:68): avc: denied { mount } for pid=282 comm="syz-executor211" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 22.425542][ T283] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 22.425564][ T283] CPU: 1 PID: 283 Comm: syz-executor211 Not tainted 5.10.240-syzkaller #0 [ 22.425569][ T283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2025 [ 22.425605][ T283] RIP: 0010:do_renameat2+0x471/0xe60 [ 22.425615][ T283] Code: 89 c5 48 3d 01 f0 ff ff 72 0f e8 1a f4 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 [ 22.425632][ T283] RSP: 0018:ffffc90000b47d80 EFLAGS: 00010202 [pid 285] write(3, "\x90\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x0e\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x07\x00\x00\x00\x00\x00\x00\x00\x1a\x00\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00"..., 144 [pid 282] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 285] <... write resumed>) = 144 [pid 285] futex(0x7fa8520a941c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 22.456353][ T24] audit: type=1400 audit(1755992819.029:69): 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 [ 22.456527][ T283] [ 22.465109][ T24] audit: type=1400 audit(1755992819.029:70): 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 [ 22.475221][ T283] RAX: dffffc0000000000 RBX: 00000000ffffff9c RCX: ffff88811fff62c0 [ 22.475227][ T283] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88811fff62c0 [ 22.475232][ T283] RBP: ffffc90000b47f08 R08: dffffc0000000000 R09: ffffed10238febe8 [ 22.475238][ T283] R10: ffffed10238febe8 R11: 1ffff110238febe7 R12: 0000000000000001 [ 22.475243][ T283] R13: 0000000000000008 R14: ffff8881079e5500 R15: 0000000000000001 [ 22.475250][ T283] FS: 00007fa851fde6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.475256][ T283] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.475262][ T283] CR2: 0000200000003000 CR3: 0000000106b92000 CR4: 00000000003506a0 [ 22.475271][ T283] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.475276][ T283] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.475279][ T283] Call Trace: [ 22.475300][ T283] ? fsnotify_move+0x2a0/0x2a0 [ 22.475317][ T283] ? getname_flags+0x206/0x500 [ 22.481478][ T24] audit: type=1400 audit(1755992819.029:71): 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 [pid 285] futex(0x7fa8520a9418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 282] exit_group(0 [pid 285] <... futex resumed>) = ? [pid 285] +++ exited with 0 +++ [pid 282] <... exit_group resumed>) = ? [ 22.500628][ T283] __x64_sys_rename+0x86/0x90 [ 22.500638][ T283] do_syscall_64+0x31/0x40 [ 22.500650][ T283] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 22.500659][ T283] RIP: 0033:0x7fa85201c4f9 [ 22.500669][ 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 [ 22.500686][ T283] RSP: 002b:00007fa851fde218 EFLAGS: 00000246 [ 22.507208][ T24] audit: type=1400 audit(1755992819.029:72): 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 [ 22.528530][ T283] ORIG_RAX: 0000000000000052 [ 22.528538][ T283] RAX: ffffffffffffffda RBX: 00007fa8520a9408 RCX: 00007fa85201c4f9 [ 22.528544][ T283] RDX: 00007fa85201c4f9 RSI: 00002000000000c0 RDI: 0000200000000100 [ 22.528549][ T283] RBP: 00007fa8520a9400 R08: 0000000000000000 R09: 0000000000000000 [ 22.528554][ T283] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa85207602c [ 22.528560][ T283] R13: 0000200000002140 R14: 00007fa85207400c R15: 0000200000000000 [ 22.528567][ T283] Modules linked in: [ 22.529201][ T283] ---[ end trace 25ac6a544223de34 ]--- [ 22.531595][ T24] audit: type=1400 audit(1755992819.029:73): 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 [ 22.552471][ T283] RIP: 0010:do_renameat2+0x471/0xe60 [ 22.819517][ T283] Code: 89 c5 48 3d 01 f0 ff ff 72 0f e8 1a f4 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 [ 22.840099][ T283] RSP: 0018:ffffc90000b47d80 EFLAGS: 00010202 [ 22.846410][ T283] RAX: dffffc0000000000 RBX: 00000000ffffff9c RCX: ffff88811fff62c0 [ 22.855011][ T283] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88811fff62c0 [ 22.863241][ T283] RBP: ffffc90000b47f08 R08: dffffc0000000000 R09: ffffed10238febe8 [ 22.871484][ T283] R10: ffffed10238febe8 R11: 1ffff110238febe7 R12: 0000000000000001 [ 22.880002][ T283] R13: 0000000000000008 R14: ffff8881079e5500 R15: 0000000000000001 [ 22.889044][ T283] FS: 00007fa851fde6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 22.902429][ T283] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.910458][ T283] CR2: 00007fa8520730d8 CR3: 0000000106b92000 CR4: 00000000003506b0 [ 22.923528][ T283] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.933839][ T283] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.942550][ T283] Kernel panic - not syncing: Fatal exception [ 22.949142][ T283] Kernel Offset: disabled [ 22.953548][ T283] Rebooting in 86400 seconds..