./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1863028483 <...> Warning: Permanently added '10.128.0.78' (ED25519) to the list of known hosts. execve("./syz-executor1863028483", ["./syz-executor1863028483"], 0x7ffc05966c40 /* 10 vars */) = 0 brk(NULL) = 0x555556f5a000 brk(0x555556f5ad40) = 0x555556f5ad40 arch_prctl(ARCH_SET_FS, 0x555556f5a3c0) = 0 set_tid_address(0x555556f5a690) = 295 set_robust_list(0x555556f5a6a0, 24) = 0 rseq(0x555556f5ace0, 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-executor1863028483", 4096) = 28 getrandom("\x60\xb4\xf3\xb4\x78\x45\xf9\xf1", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556f5ad40 brk(0x555556f7bd40) = 0x555556f7bd40 brk(0x555556f7c000) = 0x555556f7c000 mprotect(0x7f89d23c2000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 write(1, "executing program\n", 18executing program ) = 18 futex(0x7f89d23c83cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f89d235e630, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f89d234fcb0}, 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) = 0x7f89d22d7000 mprotect(0x7f89d22d8000, 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=0x7f89d22f7990, parent_tid=0x7f89d22f7990, exit_signal=0, stack=0x7f89d22d7000, stack_size=0x20300, tls=0x7f89d22f76c0}./strace-static-x86_64: Process 296 attached => {parent_tid=[296]}, 88) = 296 [pid 296] set_robust_list(0x7f89d22f79a0, 24 [pid 295] rt_sigprocmask(SIG_SETMASK, [], [pid 296] <... set_robust_list resumed>) = 0 [pid 295] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 296] rt_sigprocmask(SIG_SETMASK, [], [pid 295] futex(0x7f89d23c83c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 296] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f89d23c83cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [ 23.951606][ T30] audit: type=1400 audit(1721297321.246:66): avc: denied { execmem } for pid=295 comm="syz-executor186" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.975746][ T30] audit: type=1400 audit(1721297321.276:67): avc: denied { read write } for pid=295 comm="syz-executor186" name="fuse" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [pid 296] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 296] futex(0x7f89d23c83cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 296] futex(0x7f89d23c83c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f89d23c83c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 296] <... futex resumed>) = 0 [pid 295] futex(0x7f89d23c83cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] mkdir("./file0", 0777) = 0 [pid 296] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [ 23.999260][ T30] audit: type=1400 audit(1721297321.276:68): avc: denied { open } for pid=295 comm="syz-executor186" path="/dev/fuse" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 24.022866][ T30] audit: type=1400 audit(1721297321.316:69): avc: denied { mounton } for pid=295 comm="syz-executor186" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 296] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 295] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 295] futex(0x7f89d23c83cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 295] futex(0x7f89d23c83dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f89d22b6000 [pid 295] mprotect(0x7f89d22b7000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 295] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 295] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f89d22d6990, parent_tid=0x7f89d22d6990, exit_signal=0, stack=0x7f89d22b6000, stack_size=0x20300, tls=0x7f89d22d66c0} => {parent_tid=[298]}, 88) = 298 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] futex(0x7f89d23c83d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f89d23c83dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 298 attached [pid 298] set_robust_list(0x7f89d22d69a0, 24) = 0 [pid 298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 298] 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\x24\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x73\x01\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 298] 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\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", 80) = 80 [pid 298] futex(0x7f89d23c83dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f89d23c83d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f89d23c83dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... futex resumed>) = 1 [pid 298] 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\x28\x01\x00\x00\x00\x00\x00\x00\x00\x80\x01\x00\x00\x00\x00\x00", 8192) = 48 [pid 298] 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 296] <... openat resumed>) = 4 [pid 296] chdir("./file0" [pid 298] <... write resumed>) = 32 [pid 298] futex(0x7f89d23c83dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f89d23c83d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f89d23c83dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... futex resumed>) = 1 [pid 298] 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\x28\x01\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00", 8192) = 48 [pid 298] write(3, "\x10\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00", 16 [pid 296] <... chdir resumed>) = 0 [pid 296] futex(0x7f89d23c83cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] futex(0x7f89d23c83c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 298] <... write resumed>) = 16 [pid 298] futex(0x7f89d23c83dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f89d23c83c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 296] <... futex resumed>) = 0 [pid 295] futex(0x7f89d23c83cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] mkdir("./file0", 000 [pid 298] <... futex resumed>) = 1 [ 24.045621][ T30] audit: type=1400 audit(1721297321.316:70): avc: denied { mount } for pid=295 comm="syz-executor186" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 298] futex(0x7f89d23c83d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 295] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 295] futex(0x7f89d23c83cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 295] futex(0x7f89d23c83d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 295] futex(0x7f89d23c83dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... futex resumed>) = 0 [pid 298] read(3, "\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\x28\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 298] write(3, "\x95\x00\x00\x00\x00\x00\x00\x00\x08\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 149) = 149 [pid 298] futex(0x7f89d23c83dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 298] <... futex resumed>) = 1 [ 24.123087][ T296] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 24.134842][ T296] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 24.143263][ T296] CPU: 0 PID: 296 Comm: syz-executor186 Not tainted 5.15.151-syzkaller-00415-gdb06c48ab67e #0 [ 24.153412][ T296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 24.163314][ T296] RIP: 0010:filename_create+0x2d8/0x530 [ 24.168689][ T296] Code: 92 00 00 00 4c 89 7c 24 28 45 84 e4 0f 95 c0 83 7c 24 14 00 0f 94 c3 20 c3 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 1f 02 00 00 45 8b 26 41 bd 00 00 70 00 be [ 24.188140][ T296] RSP: 0018:ffffc90000957d20 EFLAGS: 00010247 [ 24.194117][ T296] RAX: 0000000000000000 RBX: 1ffff9200012af00 RCX: dffffc0000000000 [ 24.201931][ T296] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000000 [ 24.209744][ T296] RBP: ffffc90000957e10 R08: ffffffff81c09428 R09: ffffed10239cc472 [ 24.217552][ T296] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 24.225363][ T296] R13: 0000000000000600 R14: 0000000000000005 R15: ffffc90000957e80 [ 24.233176][ T296] FS: 00007f89d22f76c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.242065][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.248490][ T296] CR2: 0000000020010000 CR3: 000000012158a000 CR4: 00000000003506b0 [ 24.256302][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.264112][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.271924][ T296] Call Trace: [ 24.275047][ T296] [ 24.277824][ T296] ? __die_body+0x62/0xb0 [ 24.281989][ T296] ? die_addr+0x9f/0xd0 [ 24.285986][ T296] ? exc_general_protection+0x311/0x4b0 [ 24.291369][ T296] ? __kasan_check_write+0x14/0x20 [ 24.296312][ T296] ? asm_exc_general_protection+0x27/0x30 [ 24.301865][ T296] ? fast_dput+0x78/0x2a0 [ 24.306033][ T296] ? filename_create+0x2d8/0x530 [ 24.310806][ T296] ? kern_path_create+0x1a0/0x1a0 [ 24.315667][ T296] do_mkdirat+0xbd/0x450 [ 24.319746][ T296] ? strncpy_from_user+0x18e/0x2d0 [ 24.324691][ T296] ? vfs_mkdir+0x610/0x610 [ 24.328945][ T296] ? getname_flags+0x1fd/0x520 [ 24.333545][ T296] __x64_sys_mkdir+0x6e/0x80 [ 24.337975][ T296] do_syscall_64+0x3d/0xb0 [ 24.342227][ T296] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 24.347952][ T296] RIP: 0033:0x7f89d2338759 [ 24.352208][ T296] 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 [ 24.371649][ T296] RSP: 002b:00007f89d22f7218 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 24.379895][ T296] RAX: ffffffffffffffda RBX: 00007f89d23c83c8 RCX: 00007f89d2338759 [ 24.387709][ T296] RDX: 00007f89d2338759 RSI: 0000000000000000 RDI: 0000000020000080 [ 24.395601][ T296] RBP: 00007f89d23c83c0 R08: 0000000000000000 R09: 0000000000000000 [ 24.403413][ T296] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f89d23950fc [ 24.411230][ T296] R13: 00007f89d238d039 R14: 0030656c69662f2e R15: 00007f89d23930f8 [ 24.419043][ T296] [ 24.421900][ T296] Modules linked in: [ 24.425774][ T296] ---[ end trace a1dcd434dbdbdccd ]--- [ 24.431208][ T296] RIP: 0010:filename_create+0x2d8/0x530 [ 24.436697][ T296] Code: 92 00 00 00 4c 89 7c 24 28 45 84 e4 0f 95 c0 83 7c 24 14 00 0f 94 c3 20 c3 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 1f 02 00 00 45 8b 26 41 bd 00 00 70 00 be [ 24.456177][ T296] RSP: 0018:ffffc90000957d20 EFLAGS: 00010247 [ 24.461994][ T296] RAX: 0000000000000000 RBX: 1ffff9200012af00 RCX: dffffc0000000000 [pid 298] futex(0x7f89d23c83d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 295] exit_group(0) = ? [pid 298] <... futex resumed>) = ? [pid 298] +++ exited with 0 +++ [ 24.469827][ T296] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000000 [ 24.477626][ T296] RBP: ffffc90000957e10 R08: ffffffff81c09428 R09: ffffed10239cc472 [ 24.485423][ T296] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 24.493265][ T296] R13: 0000000000000600 R14: 0000000000000005 R15: ffffc90000957e80 [ 24.501401][ T296] FS: 00007f89d22f76c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.510163][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.516615][ T296] CR2: 0000564f53205c68 CR3: 000000012158a000 CR4: 00000000003506a0 [ 24.524374][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.532216][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.540042][ T296] Kernel panic - not syncing: Fatal exception [ 24.546200][ T296] Kernel Offset: disabled [ 24.550330][ T296] Rebooting in 86400 seconds..