./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3326843891 <...> Warning: Permanently added '10.128.0.160' (ED25519) to the list of known hosts. execve("./syz-executor3326843891", ["./syz-executor3326843891"], 0x7ffdf5e75840 /* 10 vars */) = 0 brk(NULL) = 0x555555f87000 brk(0x555555f87d40) = 0x555555f87d40 arch_prctl(ARCH_SET_FS, 0x555555f873c0) = 0 set_tid_address(0x555555f87690) = 294 set_robust_list(0x555555f876a0, 24) = 0 rseq(0x555555f87ce0, 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-executor3326843891", 4096) = 28 getrandom("\x84\x29\x0d\x35\x10\x82\xe4\xf7", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555f87d40 brk(0x555555fa8d40) = 0x555555fa8d40 brk(0x555555fa9000) = 0x555555fa9000 mprotect(0x7f76b0655000, 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 openat(AT_FDCWD, "/dev/loop0", O_RDWRexecuting program ) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555f87690) = 295 ./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x555555f876a0, 24) = 0 [pid 295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 295] setpgid(0, 0) = 0 [pid 295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 295] write(3, "1000", 4) = 4 [pid 295] close(3) = 0 [pid 295] write(1, "executing program\n", 18) = 18 [pid 295] futex(0x7f76b065b3cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] rt_sigaction(SIGRT_1, {sa_handler=0x7f76b05f1e70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f76b05e34f0}, NULL, 8) = 0 [pid 295] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 295] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f76b0569000 [pid 295] mprotect(0x7f76b056a000, 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=0x7f76b0589990, parent_tid=0x7f76b0589990, exit_signal=0, stack=0x7f76b0569000, stack_size=0x20300, tls=0x7f76b05896c0} => {parent_tid=[296]}, 88) = 296 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] futex(0x7f76b065b3c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f76b065b3cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 296 attached [pid 296] set_robust_list(0x7f76b05899a0, 24) = 0 [pid 296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 296] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 296] futex(0x7f76b065b3cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f76b065b3c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f76b065b3cc, 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 [ 22.770585][ T30] audit: type=1400 audit(1721295632.390:66): avc: denied { execmem } for pid=294 comm="syz-executor332" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.791218][ T30] audit: type=1400 audit(1721295632.390:67): avc: denied { read write } for pid=294 comm="syz-executor332" name="loop0" dev="devtmpfs" ino=112 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 296] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 295] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 295] futex(0x7f76b065b3cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 295] futex(0x7f76b065b3cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 295] futex(0x7f76b065b3dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f76b0548000 [pid 295] mprotect(0x7f76b0549000, 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=0x7f76b0568990, parent_tid=0x7f76b0568990, exit_signal=0, stack=0x7f76b0548000, stack_size=0x20300, tls=0x7f76b05686c0} => {parent_tid=[299]}, 88) = 299 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] futex(0x7f76b065b3d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f76b065b3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 299 attached [pid 299] set_robust_list(0x7f76b05689a0, 24) = 0 [pid 299] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 299] 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 299] 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 299] futex(0x7f76b065b3dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f76b065b3d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f76b065b3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... futex resumed>) = 1 [pid 299] 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 299] 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 299] <... write resumed>) = 32 [pid 299] futex(0x7f76b065b3dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f76b065b3d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f76b065b3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... futex resumed>) = 1 [pid 299] 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 299] 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(0x7f76b065b3cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] futex(0x7f76b065b3c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 299] <... write resumed>) = 16 [pid 299] futex(0x7f76b065b3dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f76b065b3c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 296] <... futex resumed>) = 0 [pid 295] <... futex resumed>) = 1 [pid 296] mkdir("./file0", 000 [pid 295] futex(0x7f76b065b3cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... futex resumed>) = 1 [ 22.815410][ T30] audit: type=1400 audit(1721295632.390:68): avc: denied { open } for pid=294 comm="syz-executor332" path="/dev/loop0" dev="devtmpfs" ino=112 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.839692][ T30] audit: type=1400 audit(1721295632.390:69): avc: denied { ioctl } for pid=294 comm="syz-executor332" path="/dev/loop0" dev="devtmpfs" ino=112 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 299] futex(0x7f76b065b3d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 295] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 295] futex(0x7f76b065b3d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 299] <... futex resumed>) = 0 [pid 295] <... futex resumed>) = 1 [pid 299] read(3, [ 22.865504][ T30] audit: type=1400 audit(1721295632.390:70): avc: denied { read write } for pid=295 comm="syz-executor332" 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 [ 22.888847][ T30] audit: type=1400 audit(1721295632.390:71): avc: denied { open } for pid=295 comm="syz-executor332" 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 [pid 295] futex(0x7f76b065b3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... 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\x28\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 299] 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 299] futex(0x7f76b065b3dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 299] futex(0x7f76b065b3d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 295] <... futex resumed>) = 0 [ 22.893961][ T296] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 22.912303][ T30] audit: type=1400 audit(1721295632.390:72): avc: denied { mounton } for pid=295 comm="syz-executor332" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.923723][ T296] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 22.923738][ T296] CPU: 0 PID: 296 Comm: syz-executor332 Not tainted 5.15.151-syzkaller-00415-gdb06c48ab67e #0 [ 22.923754][ T296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 22.923773][ T296] RIP: 0010:filename_create+0x2d8/0x530 [ 22.923806][ 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 [ 22.923817][ T296] RSP: 0018:ffffc900009d7d20 EFLAGS: 00010247 [ 22.923833][ T296] RAX: 0000000000000000 RBX: 1ffff9200013af00 RCX: dffffc0000000000 [ 22.923845][ T296] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000000 [ 22.946238][ T30] audit: type=1400 audit(1721295632.390:73): avc: denied { mount } for pid=295 comm="syz-executor332" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 22.954443][ T296] RBP: ffffc900009d7e10 R08: ffffffff81c09428 R09: ffffed1023bcbc0c [ 22.954457][ T296] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 22.954467][ T296] R13: 0000000000000600 R14: 0000000000000005 R15: ffffc900009d7e80 [pid 295] exit_group(0 [pid 299] <... futex resumed>) = ? [pid 295] <... exit_group resumed>) = ? [pid 299] +++ exited with 0 +++ [ 23.067282][ T296] FS: 00007f76b05896c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.076361][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.082788][ T296] CR2: 0000000020010000 CR3: 000000012375f000 CR4: 00000000003506b0 [ 23.090598][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.098401][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.106215][ T296] Call Trace: [ 23.109337][ T296] [ 23.112118][ T296] ? __die_body+0x62/0xb0 [ 23.116372][ T296] ? die_addr+0x9f/0xd0 [ 23.120713][ T296] ? exc_general_protection+0x311/0x4b0 [ 23.126092][ T296] ? __kasan_check_write+0x14/0x20 [ 23.131038][ T296] ? asm_exc_general_protection+0x27/0x30 [ 23.136594][ T296] ? fast_dput+0x78/0x2a0 [ 23.140765][ T296] ? filename_create+0x2d8/0x530 [ 23.145531][ T296] ? kern_path_create+0x1a0/0x1a0 [ 23.150479][ T296] do_mkdirat+0xbd/0x450 [ 23.154557][ T296] ? strncpy_from_user+0x18e/0x2d0 [ 23.159599][ T296] ? vfs_mkdir+0x610/0x610 [ 23.163845][ T296] ? getname_flags+0x1fd/0x520 [ 23.168445][ T296] __x64_sys_mkdir+0x6e/0x80 [ 23.172873][ T296] do_syscall_64+0x3d/0xb0 [ 23.177568][ T296] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.183292][ T296] RIP: 0033:0x7f76b05cbf09 [ 23.187638][ T296] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 18 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 [ 23.207423][ T296] RSP: 002b:00007f76b0589218 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 23.215773][ T296] RAX: ffffffffffffffda RBX: 00007f76b065b3c8 RCX: 00007f76b05cbf09 [ 23.223700][ T296] RDX: 00007f76b05cbf09 RSI: 0000000000000000 RDI: 0000000020000080 [ 23.231501][ T296] RBP: 00007f76b065b3c0 R08: 0000000000000000 R09: 0000000000000000 [ 23.239314][ T296] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f76b062816c [ 23.247124][ T296] R13: 00007f76b0620070 R14: 0030656c69662f2e R15: 00007f76b0626168 [ 23.254942][ T296] [ 23.257799][ T296] Modules linked in: [ 23.261777][ T296] ---[ end trace aa2b97094afce32f ]--- [ 23.267040][ T296] RIP: 0010:filename_create+0x2d8/0x530 [ 23.272633][ 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 [ 23.292262][ T296] RSP: 0018:ffffc900009d7d20 EFLAGS: 00010247 [ 23.298137][ T296] RAX: 0000000000000000 RBX: 1ffff9200013af00 RCX: dffffc0000000000 [ 23.305980][ T296] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000000 [ 23.313775][ T296] RBP: ffffc900009d7e10 R08: ffffffff81c09428 R09: ffffed1023bcbc0c [ 23.321590][ T296] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 23.329378][ T296] R13: 0000000000000600 R14: 0000000000000005 R15: ffffc900009d7e80 [ 23.337246][ T296] FS: 00007f76b05896c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.345977][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.352404][ T296] CR2: 0000000020010000 CR3: 000000012375f000 CR4: 00000000003506b0 [ 23.360207][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.368086][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.376044][ T296] Kernel panic - not syncing: Fatal exception [ 23.382119][ T296] Kernel Offset: disabled [ 23.386397][ T296] Rebooting in 86400 seconds..