./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1575887433 <...> Warning: Permanently added '10.128.1.174' (ED25519) to the list of known hosts. execve("./syz-executor1575887433", ["./syz-executor1575887433"], 0x7fff350b9410 /* 10 vars */) = 0 brk(NULL) = 0x555582ce2000 brk(0x555582ce2d40) = 0x555582ce2d40 arch_prctl(ARCH_SET_FS, 0x555582ce23c0) = 0 set_tid_address(0x555582ce2690) = 282 set_robust_list(0x555582ce26a0, 24) = 0 rseq(0x555582ce2ce0, 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-executor1575887433", 4096) = 28 getrandom("\xb2\xec\x5f\x47\x40\x75\x0a\x9d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555582ce2d40 brk(0x555582d03d40) = 0x555582d03d40 brk(0x555582d04000) = 0x555582d04000 mprotect(0x7ff31e858000, 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(0x7ff31e85e3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7ff31e7f73e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff31e7e8a60}, 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) = 0x7ff31e773000 mprotect(0x7ff31e774000, 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=0x7ff31e793990, parent_tid=0x7ff31e793990, exit_signal=0, stack=0x7ff31e773000, stack_size=0x20300, tls=0x7ff31e7936c0} => {parent_tid=[283]}, 88) = 283 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7ff31e85e3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7ff31e85e3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 283 attached [pid 283] set_robust_list(0x7ff31e7939a0, 24) = 0 [pid 283] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 283] mkdir("./file0", 000) = 0 [pid 283] futex(0x7ff31e85e3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 283] <... futex resumed>) = 1 [pid 282] futex(0x7ff31e85e3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7ff31e85e3ec, 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(0x7ff31e85e3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 283] futex(0x7ff31e85e3e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7ff31e85e3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 282] futex(0x7ff31e85e3ec, 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(0x7ff31e85e3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7ff31e85e3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 22.399001][ T24] audit: type=1400 audit(1750378765.440:64): avc: denied { execmem } for pid=282 comm="syz-executor157" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.421740][ T24] audit: type=1400 audit(1750378765.470:65): avc: denied { read write } for pid=282 comm="syz-executor157" 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 282] futex(0x7ff31e85e3ec, 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(0x7ff31e85e3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7ff31e85e3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7ff31e85e3ec, 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(0x7ff31e85e3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 282] <... futex resumed>) = 0 [pid 282] futex(0x7ff31e85e3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7ff31e85e3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 283] <... futex resumed>) = 1 [ 22.445333][ T24] audit: type=1400 audit(1750378765.470:66): avc: denied { open } for pid=282 comm="syz-executor157" 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 [ 22.468749][ T24] audit: type=1400 audit(1750378765.500:67): avc: denied { mounton } for pid=282 comm="syz-executor157" 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] read(3, [pid 282] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 282] futex(0x7ff31e85e3fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff31e752000 [pid 282] mprotect(0x7ff31e753000, 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=0x7ff31e772990, parent_tid=0x7ff31e772990, exit_signal=0, stack=0x7ff31e752000, stack_size=0x20300, tls=0x7ff31e7726c0} => {parent_tid=[285]}, 88) = 285 [pid 282] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 282] futex(0x7ff31e85e3f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 282] futex(0x7ff31e85e3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 285 attached [pid 285] set_robust_list(0x7ff31e7729a0, 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(0x7ff31e85e3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 22.491445][ T24] audit: type=1400 audit(1750378765.500:68): avc: denied { mount } for pid=282 comm="syz-executor157" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 22.504538][ T285] general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN [ 22.525162][ T285] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 22.533553][ T285] CPU: 0 PID: 285 Comm: syz-executor157 Not tainted 5.10.238-syzkaller-00282-gd76d4cd0623a #0 [ 22.543835][ T285] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 22.553882][ T285] RIP: 0010:do_renameat2+0x471/0xe60 [ 22.559134][ 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 [ 22.578704][ T285] RSP: 0018:ffffc90000be7d80 EFLAGS: 00010207 [ 22.584740][ T285] RAX: dffffc0000000000 RBX: 00000000ffffff9c RCX: ffff888106bebb40 [ 22.592681][ T285] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888106bebb40 [ 22.600620][ T285] RBP: ffffc90000be7f08 R08: dffffc0000000000 R09: ffffed102347cd3e [ 22.608558][ T285] R10: ffffed102347cd3e R11: 1ffff1102347cd3d R12: 0000000000000003 [ 22.616496][ T285] R13: 000000000000001e R14: ffff888106be2200 R15: 0000000000000001 [ 22.624785][ T285] FS: 00007ff31e7726c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 22.633773][ T285] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.640338][ T285] CR2: 000055f00478eeb8 CR3: 0000000121812000 CR4: 00000000003506b0 [ 22.648283][ T285] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.656230][ T285] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.664199][ T285] Call Trace: [ 22.667478][ T285] ? fsnotify_move+0x2a0/0x2a0 [ 22.672216][ T285] ? getname_flags+0x206/0x500 [ 22.676965][ T285] __x64_sys_rename+0x86/0x90 [ 22.681614][ T285] do_syscall_64+0x31/0x40 [ 22.686014][ T285] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 22.691898][ T285] RIP: 0033:0x7ff31e7d1539 [ 22.696292][ 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 [ 22.715870][ T285] RSP: 002b:00007ff31e772218 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [ 22.724276][ T285] RAX: ffffffffffffffda RBX: 00007ff31e85e3f8 RCX: 00007ff31e7d1539 [ 22.732483][ T285] RDX: 00007ff31e7aec96 RSI: 00002000000000c0 RDI: 0000200000000100 [ 22.740431][ T285] RBP: 00007ff31e85e3f0 R08: 00007ffc8ced9177 R09: 0000000000000000 [pid 283] futex(0x7ff31e85e3e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 282] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 22.748481][ T285] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff31e82b034 [ 22.756428][ T285] R13: 0000200000008280 R14: 0000200000000100 R15: 00007ffc8ced9178 [ 22.764386][ T285] Modules linked in: [ 22.768883][ T285] ---[ end trace 2d7b83bacb2cdbaa ]--- [ 22.769722][ T24] audit: type=1400 audit(1750378765.810:69): 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 [ 22.774542][ T285] RIP: 0010:do_renameat2+0x471/0xe60 [ 22.796957][ T24] audit: type=1400 audit(1750378765.810:70): 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 [ 22.801332][ 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 [ 22.822594][ T24] audit: type=1400 audit(1750378765.810:71): 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 [ 22.842315][ T285] RSP: 0018:ffffc90000be7d80 EFLAGS: 00010207 [ 22.863507][ T24] audit: type=1400 audit(1750378765.810:72): 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 [ 22.869457][ T285] RAX: dffffc0000000000 RBX: 00000000ffffff9c RCX: ffff888106bebb40 [ 22.889922][ T24] audit: type=1400 audit(1750378765.810:73): 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 [ 22.918143][ T285] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888106bebb40 [ 22.926312][ T285] RBP: ffffc90000be7f08 R08: dffffc0000000000 R09: ffffed102347cd3e [ 22.934288][ T285] R10: ffffed102347cd3e R11: 1ffff1102347cd3d R12: 0000000000000003 [ 22.942271][ T285] R13: 000000000000001e R14: ffff888106be2200 R15: 0000000000000001 [ 22.950269][ T285] FS: 00007ff31e7726c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 22.959179][ T285] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.965758][ T285] CR2: 000055f00478eeb8 CR3: 0000000121812000 CR4: 00000000003506b0 [ 22.973722][ T285] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.981687][ T285] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.989674][ T285] Kernel panic - not syncing: Fatal exception [ 22.995889][ T285] Kernel Offset: disabled [ 23.000283][ T285] Rebooting in 86400 seconds..