./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor945316201 <...> Warning: Permanently added '10.128.1.26' (ED25519) to the list of known hosts. execve("./syz-executor945316201", ["./syz-executor945316201"], 0x7ffc83b74870 /* 10 vars */) = 0 brk(NULL) = 0x555565a78000 brk(0x555565a78d40) = 0x555565a78d40 arch_prctl(ARCH_SET_FS, 0x555565a783c0) = 0 set_tid_address(0x555565a78690) = 283 set_robust_list(0x555565a786a0, 24) = 0 rseq(0x555565a78ce0, 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-executor945316201", 4096) = 27 getrandom("\xca\xb2\x89\xd2\x67\xb6\x84\x2b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555565a78d40 brk(0x555565a99d40) = 0x555565a99d40 brk(0x555565a9a000) = 0x555565a9a000 mprotect(0x7eff1a786000, 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(0x7eff1a78c3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7eff1a7253a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7eff1a716a20}, 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) = 0x7eff1a6a1000 mprotect(0x7eff1a6a2000, 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=0x7eff1a6c1990, parent_tid=0x7eff1a6c1990, exit_signal=0, stack=0x7eff1a6a1000, stack_size=0x20300, tls=0x7eff1a6c16c0} => {parent_tid=[284]}, 88) = 284 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7eff1a78c3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7eff1a78c3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 284 attached [pid 284] set_robust_list(0x7eff1a6c19a0, 24) = 0 [pid 284] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 284] mkdir("./file0", 000) = 0 [pid 284] futex(0x7eff1a78c3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 283] <... futex resumed>) = 0 [pid 283] futex(0x7eff1a78c3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 283] futex(0x7eff1a78c3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 284] <... futex resumed>) = 1 [pid 284] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 284] futex(0x7eff1a78c3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 283] <... futex resumed>) = 0 [pid 283] futex(0x7eff1a78c3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 283] futex(0x7eff1a78c3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 284] <... futex resumed>) = 1 [pid 284] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=00000000"...) = 0 [pid 284] futex(0x7eff1a78c3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 283] <... futex resumed>) = 0 [pid 283] futex(0x7eff1a78c3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 283] futex(0x7eff1a78c3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 284] <... futex resumed>) = 1 [pid 284] 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 284] futex(0x7eff1a78c3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 283] <... futex resumed>) = 0 [pid 283] futex(0x7eff1a78c3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 283] futex(0x7eff1a78c3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 284] <... futex resumed>) = 1 [ 24.154653][ T24] audit: type=1400 audit(1750139749.340:64): avc: denied { execmem } for pid=283 comm="syz-executor945" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 24.175186][ T24] audit: type=1400 audit(1750139749.350:65): avc: denied { read write } for pid=283 comm="syz-executor945" 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 284] mknod("./file0/../file0/file0", S_IFSOCK|000 [pid 283] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 283] futex(0x7eff1a78c3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 283] futex(0x7eff1a78c3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 283] futex(0x7eff1a78c3fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 283] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7eff1a680000 [pid 283] mprotect(0x7eff1a681000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 283] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 283] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7eff1a6a0990, parent_tid=0x7eff1a6a0990, exit_signal=0, stack=0x7eff1a680000, stack_size=0x20300, tls=0x7eff1a6a06c0} => {parent_tid=[286]}, 88) = 286 [pid 283] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 283] futex(0x7eff1a78c3f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 283] futex(0x7eff1a78c3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 286 attached [pid 286] set_robust_list(0x7eff1a6a09a0, 24) = 0 [pid 286] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 286] 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 286] futex(0x7eff1a78c3fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 283] <... futex resumed>) = 0 [pid 283] futex(0x7eff1a78c3f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 283] futex(0x7eff1a78c3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 286] <... futex resumed>) = 1 [pid 286] 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\x1c\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [ 24.200554][ T24] audit: type=1400 audit(1750139749.350:66): avc: denied { open } for pid=283 comm="syz-executor945" 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 [ 24.224587][ T284] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 24.225704][ T24] audit: type=1400 audit(1750139749.350:67): avc: denied { mounton } for pid=283 comm="syz-executor945" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 24.237608][ T284] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 24.237621][ T284] CPU: 0 PID: 284 Comm: syz-executor945 Not tainted 5.10.238-syzkaller-00282-gd76d4cd0623a #0 [ 24.237626][ T284] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 24.237661][ T284] RIP: 0010:filename_create+0x201/0x680 [ 24.237673][ T284] Code: 48 3d 01 f0 ff ff 72 11 e8 ac 56 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 [ 24.237680][ T284] RSP: 0018:ffffc90000af7d80 EFLAGS: 00010203 [ 24.237692][ T284] RAX: 0000000000000002 RBX: 0000000000000600 RCX: dffffc0000000000 [ 24.237699][ T284] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8881071f0000 [ 24.237707][ T284] RBP: ffffc90000af7e78 R08: dffffc0000000000 R09: ffffed10242812d8 [pid 286] write(3, "\xa7\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf7\xff\xff\xff\xff\xff\xff\xff\x07\x00\x00\x01\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 167) = 167 [pid 286] futex(0x7eff1a78c3fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 286] futex(0x7eff1a78c3f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 283] <... futex resumed>) = 0 [ 24.237723][ T284] R10: ffffed10242812d8 R11: 1ffff110242812d7 R12: ffffc90000af7ec0 [ 24.262430][ T24] audit: type=1400 audit(1750139749.350:68): avc: denied { mount } for pid=283 comm="syz-executor945" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 24.269601][ T284] R13: ffffc90000af7ec0 R14: 0000000000000017 R15: ffffc90000af7ec8 [ 24.269610][ T284] FS: 00007eff1a6c16c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.269618][ T284] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.269624][ T284] CR2: 000020000000c000 CR3: 0000000120be9000 CR4: 00000000003506b0 [ 24.269635][ T284] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.269651][ T284] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.280577][ T24] audit: type=1400 audit(1750139749.450:69): 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 [ 24.290882][ T284] Call Trace: [ 24.290903][ T284] ? __check_object_size+0x2f4/0x3c0 [ 24.290914][ T284] ? kern_path_create+0x40/0x40 [ 24.290937][ T284] ? getname_flags+0x206/0x500 [ 24.297083][ T24] audit: type=1400 audit(1750139749.450:70): 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 [ 24.318284][ T284] do_mknodat+0xcf/0x5a0 [ 24.318299][ T284] ? fpu__clear_all+0x20/0x20 [pid 283] exit_group(0) = ? [pid 286] <... futex resumed>) = ? [pid 286] +++ exited with 0 +++ [ 24.318309][ T284] ? debug_smp_processor_id+0x17/0x20 [ 24.318319][ T284] __x64_sys_mknod+0x80/0x90 [ 24.318328][ T284] do_syscall_64+0x31/0x40 [ 24.318341][ T284] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 24.318362][ T284] RIP: 0033:0x7eff1a6ff4f9 [ 24.326039][ T24] audit: type=1400 audit(1750139749.450:71): 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 [ 24.333441][ T284] 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 [ 24.333449][ T284] RSP: 002b:00007eff1a6c1218 EFLAGS: 00000246 ORIG_RAX: 0000000000000085 [ 24.333463][ T284] RAX: ffffffffffffffda RBX: 00007eff1a78c3e8 RCX: 00007eff1a6ff4f9 [ 24.333477][ T284] RDX: 0000000000000700 RSI: 00000000ffffc000 RDI: 00002000000002c0 [ 24.342402][ T24] audit: type=1400 audit(1750139749.450:72): 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 [ 24.350213][ T284] RBP: 00007eff1a78c3e0 R08: 0000000000000000 R09: 0000000000000000 [ 24.350220][ T284] R10: 0000000000000000 R11: 0000000000000246 R12: 00007eff1a759034 [ 24.350227][ T284] R13: 000020000000a280 R14: 00007eff1a75700e R15: 0000200000000000 [ 24.350234][ T284] Modules linked in: [ 24.358866][ T24] audit: type=1400 audit(1750139749.450:73): 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 [ 24.382065][ T284] ---[ end trace 789dddbb99c9145e ]--- [ 24.670985][ T284] RIP: 0010:filename_create+0x201/0x680 [ 24.676719][ T284] Code: 48 3d 01 f0 ff ff 72 11 e8 ac 56 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 [ 24.696949][ T284] RSP: 0018:ffffc90000af7d80 EFLAGS: 00010203 [ 24.703595][ T284] RAX: 0000000000000002 RBX: 0000000000000600 RCX: dffffc0000000000 [ 24.711787][ T284] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8881071f0000 [ 24.720084][ T284] RBP: ffffc90000af7e78 R08: dffffc0000000000 R09: ffffed10242812d8 [ 24.728290][ T284] R10: ffffed10242812d8 R11: 1ffff110242812d7 R12: ffffc90000af7ec0 [ 24.736389][ T284] R13: ffffc90000af7ec0 R14: 0000000000000017 R15: ffffc90000af7ec8 [ 24.744953][ T284] FS: 00007eff1a6c16c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.754149][ T284] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.760773][ T284] CR2: 00007eff1a7560d8 CR3: 0000000120be9000 CR4: 00000000003506a0 [ 24.768852][ T284] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.777027][ T284] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.785131][ T284] Kernel panic - not syncing: Fatal exception [ 24.792012][ T284] Kernel Offset: disabled [ 24.796338][ T284] Rebooting in 86400 seconds..