./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1838346992 <...> Warning: Permanently added '10.128.1.230' (ED25519) to the list of known hosts. execve("./syz-executor1838346992", ["./syz-executor1838346992"], 0x7fff583fd800 /* 10 vars */) = 0 brk(NULL) = 0x555580604000 brk(0x555580604d40) = 0x555580604d40 arch_prctl(ARCH_SET_FS, 0x5555806043c0) = 0 set_tid_address(0x555580604690) = 289 set_robust_list(0x5555806046a0, 24) = 0 rseq(0x555580604ce0, 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-executor1838346992", 4096) = 28 getrandom("\xda\x9f\x37\x7b\xba\x27\xf0\x09", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555580604d40 brk(0x555580625d40) = 0x555580625d40 brk(0x555580626000) = 0x555580626000 mprotect(0x7f9fafd1b000, 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(0x7f9fafd213cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f9fafcb76f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f9fafca8d70}, 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) = 0x7f9fafc30000 mprotect(0x7f9fafc31000, 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=0x7f9fafc50990, parent_tid=0x7f9fafc50990, exit_signal=0, stack=0x7f9fafc30000, stack_size=0x20300, tls=0x7f9fafc506c0} => {parent_tid=[290]}, 88) = 290 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f9fafd213c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f9fafd213cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x7f9fafc509a0, 24) = 0 [pid 290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 290] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 290] futex(0x7f9fafd213cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f9fafd213c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f9fafd213cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] mkdir("./file0", 0777) = 0 [pid 290] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [ 27.698600][ T28] audit: type=1400 audit(1753343509.258:64): avc: denied { execmem } for pid=289 comm="syz-executor183" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 27.718350][ T28] audit: type=1400 audit(1753343509.258:65): avc: denied { read write } for pid=289 comm="syz-executor183" name="fuse" dev="devtmpfs" ino=93 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [pid 290] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7f9fafd213dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f9fafc0f000 [pid 289] mprotect(0x7f9fafc10000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 289] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 289] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f9fafc2f990, parent_tid=0x7f9fafc2f990, exit_signal=0, stack=0x7f9fafc0f000, stack_size=0x20300, tls=0x7f9fafc2f6c0} => {parent_tid=[292]}, 88) = 292 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7f9fafd213d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f9fafd213dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 292 attached [pid 292] set_robust_list(0x7f9fafc2f9a0, 24) = 0 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] read(3, "\x68\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\x26\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x73\x09\x00\x00\x80\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\x00\x00\x00\x00\x00"..., 8192) = 104 [pid 292] 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\x00\x00\x00\x00\x08\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\x00\x00\x00\x00\x00\x00\x00\x00\x00", 80) = 80 [pid 292] futex(0x7f9fafd213dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f9fafd213d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f9fafd213dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] <... futex resumed>) = 1 [pid 292] read(3, "\x30\x00\x00\x00\x1b\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\x22\x01\x00\x00\x00\x00\x00\x00\x00\x80\x01\x00\x00\x00\x00\x00", 8192) = 48 [pid 292] write(3, "\x20\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", 32 [pid 290] <... openat resumed>) = 4 [pid 290] chdir("./file0" [pid 292] <... write resumed>) = 32 [pid 292] futex(0x7f9fafd213dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f9fafd213d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f9fafd213dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] <... futex resumed>) = 1 [pid 292] read(3, "\x30\x00\x00\x00\x22\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x22\x01\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00", 8192) = 48 [pid 292] write(3, "\x10\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00", 16 [pid 290] <... chdir resumed>) = 0 [pid 290] futex(0x7f9fafd213cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7f9fafd213c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... write resumed>) = 16 [pid 292] futex(0x7f9fafd213dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f9fafd213c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 290] <... futex resumed>) = 0 [pid 289] futex(0x7f9fafd213cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] read(3, [pid 292] <... futex resumed>) = 1 [ 27.741877][ T28] audit: type=1400 audit(1753343509.258:66): avc: denied { open } for pid=289 comm="syz-executor183" path="/dev/fuse" dev="devtmpfs" ino=93 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 27.765301][ T28] audit: type=1400 audit(1753343509.258:67): avc: denied { mounton } for pid=289 comm="syz-executor183" 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 292] futex(0x7f9fafd213d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7f9fafd213cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7f9fafd213d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 289] futex(0x7f9fafd213dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] <... futex resumed>) = 0 [pid 292] mkdir("./file0", 012 [pid 290] <... read resumed>"\x2e\x00\x00\x00\x01\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x24\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 290] write(3, "\x9b\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfc\xff\xff\xff\xff\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\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\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 155) = 155 [pid 290] futex(0x7f9fafd213cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 27.788108][ T28] audit: type=1400 audit(1753343509.258:68): avc: denied { mount } for pid=289 comm="syz-executor183" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 27.819850][ T292] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 27.831601][ T292] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 27.840002][ T292] CPU: 0 PID: 292 Comm: syz-executor183 Not tainted 6.1.141-syzkaller-00042-g96160a0e0aa1 #0 [ 27.850136][ T292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 27.860204][ T292] RIP: 0010:filename_create+0x241/0x450 [ 27.865764][ T292] Code: ff ff 48 3d 01 f0 ff ff 49 89 c7 4c 8b 64 24 28 72 07 e8 a2 e2 af ff eb 6d 48 89 c1 48 c1 e9 03 48 ba 00 00 00 00 00 fc ff df <0f> b6 0c 11 84 c9 0f 85 dd 01 00 00 44 8b 20 44 89 e6 81 e6 00 00 [ 27.885359][ T292] RSP: 0018:ffffc90000e87da0 EFLAGS: 00010202 [ 27.891515][ T292] RAX: 000000000000000b RBX: 1ffff920001d0fd4 RCX: 0000000000000001 [ 27.899475][ T292] RDX: dffffc0000000000 RSI: 0000000000000005 RDI: ffff888115bc0000 [ 27.907436][ T292] RBP: ffffc90000e87e68 R08: dffffc0000000000 R09: fffff520001d0f91 [ 27.915396][ T292] R10: fffff520001d0f91 R11: 1ffff920001d0f90 R12: ffffc90000e87e98 [ 27.923362][ T292] R13: ffffc90000e87ea0 R14: 0000000000000600 R15: 000000000000000b [ 27.931326][ T292] FS: 00007f9fafc2f6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 27.940273][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.946850][ T292] CR2: 00007f9fafccc610 CR3: 00000001256fb000 CR4: 00000000003506b0 [ 27.954818][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.962781][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.970743][ T292] Call Trace: [ 27.974015][ T292] [ 27.977205][ T292] ? check_stack_object+0x81/0x140 [ 27.982330][ T292] ? kern_path_create+0x1b0/0x1b0 [ 27.987358][ T292] do_mkdirat+0x5c/0x4c0 [ 27.991600][ T292] ? getname_flags+0x206/0x500 [ 27.996379][ T292] __x64_sys_mkdir+0x6e/0x80 [ 28.000972][ T292] x64_sys_call+0x966/0x9a0 [ 28.005492][ T292] do_syscall_64+0x4c/0xa0 [ 28.009903][ T292] ? clear_bhb_loop+0x30/0x80 [ 28.014577][ T292] ? clear_bhb_loop+0x30/0x80 [ 28.019261][ T292] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.025167][ T292] RIP: 0033:0x7f9fafc91819 [ 28.029596][ T292] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 [ 28.049202][ T292] RSP: 002b:00007f9fafc2f218 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 28.057631][ T292] RAX: ffffffffffffffda RBX: 00007f9fafd213d8 RCX: 00007f9fafc91819 [ 28.065602][ T292] RDX: 00007f9fafc91819 RSI: 000000000000000a RDI: 0000200000000080 [ 28.073568][ T292] RBP: 00007f9fafd213d0 R08: 0000000000000000 R09: 0000000000000000 [ 28.081616][ T292] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9fafcee124 [ 28.089582][ T292] R13: 0000000000000008 R14: 0030656c69662f2e R15: 0000200000000080 [ 28.097557][ T292] [pid 290] futex(0x7f9fafd213c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 28.100566][ T292] Modules linked in: [ 28.104723][ T292] ---[ end trace 0000000000000000 ]--- [ 28.110215][ T28] audit: type=1400 audit(1753343509.668:69): avc: denied { read } for pid=84 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 [ 28.131985][ T292] RIP: 0010:filename_create+0x241/0x450 [ 28.132136][ T28] audit: type=1400 audit(1753343509.668:70): avc: denied { search } for pid=84 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 [ 28.137878][ T292] Code: ff ff 48 3d 01 f0 ff ff 49 89 c7 4c 8b 64 24 28 72 07 e8 a2 e2 af ff eb 6d 48 89 c1 48 c1 e9 03 48 ba 00 00 00 00 00 fc ff df <0f> b6 0c 11 84 c9 0f 85 dd 01 00 00 44 8b 20 44 89 e6 81 e6 00 00 [ 28.158952][ T28] audit: type=1400 audit(1753343509.668:71): avc: denied { write } for pid=84 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 [ 28.178514][ T292] RSP: 0018:ffffc90000e87da0 EFLAGS: 00010202 [ 28.199888][ T28] audit: type=1400 audit(1753343509.668:72): avc: denied { add_name } for pid=84 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 28.205896][ T292] RAX: 000000000000000b RBX: 1ffff920001d0fd4 RCX: 0000000000000001 [ 28.226332][ T28] audit: type=1400 audit(1753343509.668:73): avc: denied { create } for pid=84 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 28.234251][ T292] RDX: dffffc0000000000 RSI: 0000000000000005 RDI: ffff888115bc0000 [ 28.262508][ T292] RBP: ffffc90000e87e68 R08: dffffc0000000000 R09: fffff520001d0f91 [ 28.270497][ T292] R10: fffff520001d0f91 R11: 1ffff920001d0f90 R12: ffffc90000e87e98 [ 28.278495][ T292] R13: ffffc90000e87ea0 R14: 0000000000000600 R15: 000000000000000b [ 28.286497][ T292] FS: 00007f9fafc2f6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 28.295460][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.302061][ T292] CR2: 000055bb0cd79eb8 CR3: 00000001256fb000 CR4: 00000000003506a0 [ 28.310069][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.318079][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.326081][ T292] Kernel panic - not syncing: Fatal exception [ 28.332445][ T292] Kernel Offset: disabled [ 28.336793][ T292] Rebooting in 86400 seconds..