./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3287712448 <...> Warning: Permanently added '10.128.0.109' (ED25519) to the list of known hosts. execve("./syz-executor3287712448", ["./syz-executor3287712448"], 0x7ffe3161ad30 /* 10 vars */) = 0 brk(NULL) = 0x555557109000 brk(0x555557109d40) = 0x555557109d40 arch_prctl(ARCH_SET_FS, 0x5555571093c0) = 0 set_tid_address(0x555557109690) = 293 set_robust_list(0x5555571096a0, 24) = 0 rseq(0x555557109ce0, 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-executor3287712448", 4096) = 28 getrandom("\x21\xcf\x49\xbb\x55\xcb\x12\xc6", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557109d40 brk(0x55555712ad40) = 0x55555712ad40 brk(0x55555712b000) = 0x55555712b000 mprotect(0x7f137d23e000, 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(0x7f137d2443cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f137d1da630, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f137d1cbcb0}, 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) = 0x7f137d153000 mprotect(0x7f137d154000, 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=0x7f137d173990, parent_tid=0x7f137d173990, exit_signal=0, stack=0x7f137d153000, stack_size=0x20300, tls=0x7f137d1736c0} => {parent_tid=[294]}, 88) = 294 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f137d2443c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f137d2443cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 294 attached [pid 294] set_robust_list(0x7f137d1739a0, 24) = 0 [pid 294] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 294] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 294] futex(0x7f137d2443cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 294] futex(0x7f137d2443c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7f137d2443c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 294] <... futex resumed>) = 0 [pid 293] futex(0x7f137d2443cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 294] mkdir("./file0", 0777) = 0 [pid 294] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [ 22.027576][ T30] audit: type=1400 audit(1721293899.864:66): avc: denied { execmem } for pid=293 comm="syz-executor328" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.048559][ T30] audit: type=1400 audit(1721293899.884:67): avc: denied { read write } for pid=293 comm="syz-executor328" 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 294] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 293] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 293] futex(0x7f137d2443dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f137d132000 [pid 293] mprotect(0x7f137d133000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 293] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 293] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f137d152990, parent_tid=0x7f137d152990, exit_signal=0, stack=0x7f137d132000, stack_size=0x20300, tls=0x7f137d1526c0} => {parent_tid=[296]}, 88) = 296 [pid 293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 293] futex(0x7f137d2443d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7f137d2443dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 296 attached [pid 296] set_robust_list(0x7f137d1529a0, 24) = 0 [pid 296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 296] 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 296] 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 296] futex(0x7f137d2443dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7f137d2443d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7f137d2443dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] 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\x26\x01\x00\x00\x00\x00\x00\x00\x00\x80\x01\x00\x00\x00\x00\x00", 8192) = 48 [pid 296] 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 294] <... openat resumed>) = 4 [pid 294] chdir("./file0" [pid 296] <... write resumed>) = 32 [pid 296] futex(0x7f137d2443dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7f137d2443d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7f137d2443dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] 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\x26\x01\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00", 8192) = 48 [pid 296] write(3, "\x10\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00", 16 [pid 294] <... chdir resumed>) = 0 [pid 294] futex(0x7f137d2443cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f137d2443c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 296] <... write resumed>) = 16 [pid 296] futex(0x7f137d2443dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7f137d2443c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 294] <... futex resumed>) = 0 [pid 293] futex(0x7f137d2443cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 294] mkdir("./file0", 000 [pid 296] <... futex resumed>) = 1 [ 22.072043][ T30] audit: type=1400 audit(1721293899.884:68): avc: denied { open } for pid=293 comm="syz-executor328" 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 [ 22.095446][ T30] audit: type=1400 audit(1721293899.904:69): avc: denied { mounton } for pid=293 comm="syz-executor328" 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] futex(0x7f137d2443d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 293] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 293] futex(0x7f137d2443d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 293] futex(0x7f137d2443dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 0 [pid 296] 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\x26\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 296] 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 296] futex(0x7f137d2443dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 293] <... futex resumed>) = 0 [pid 296] <... futex resumed>) = 1 [ 22.118379][ T30] audit: type=1400 audit(1721293899.904:70): avc: denied { mount } for pid=293 comm="syz-executor328" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 22.170214][ T294] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 22.181793][ T294] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 22.190041][ T294] CPU: 1 PID: 294 Comm: syz-executor328 Not tainted 5.15.151-syzkaller-00415-gdb06c48ab67e #0 [ 22.200107][ T294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 22.210003][ T294] RIP: 0010:filename_create+0x2d8/0x530 [ 22.215374][ T294] 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 [ 22.234817][ T294] RSP: 0000:ffffc900009f7d20 EFLAGS: 00010247 [ 22.240713][ T294] RAX: 0000000000000000 RBX: 1ffff9200013ef00 RCX: dffffc0000000000 [ 22.248527][ T294] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000000 [ 22.256336][ T294] RBP: ffffc900009f7e10 R08: ffffffff81c09428 R09: ffffed102384e5e8 [ 22.264146][ T294] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 22.271960][ T294] R13: 0000000000000600 R14: 0000000000000005 R15: ffffc900009f7e80 [ 22.279771][ T294] FS: 00007f137d1736c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.288538][ T294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.294958][ T294] CR2: 000000002000e000 CR3: 000000011e7c3000 CR4: 00000000003506a0 [ 22.302774][ T294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.310585][ T294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.318395][ T294] Call Trace: [ 22.321521][ T294] [ 22.324300][ T294] ? __die_body+0x62/0xb0 [ 22.328461][ T294] ? die_addr+0x9f/0xd0 [ 22.332458][ T294] ? exc_general_protection+0x311/0x4b0 [ 22.337837][ T294] ? __kasan_check_write+0x14/0x20 [ 22.342786][ T294] ? asm_exc_general_protection+0x27/0x30 [ 22.348364][ T294] ? fast_dput+0x78/0x2a0 [ 22.352506][ T294] ? filename_create+0x2d8/0x530 [ 22.357278][ T294] ? kern_path_create+0x1a0/0x1a0 [ 22.362139][ T294] do_mkdirat+0xbd/0x450 [ 22.366218][ T294] ? strncpy_from_user+0x18e/0x2d0 [ 22.371165][ T294] ? vfs_mkdir+0x610/0x610 [ 22.375417][ T294] ? getname_flags+0x1fd/0x520 [ 22.380019][ T294] __x64_sys_mkdir+0x6e/0x80 [ 22.384481][ T294] do_syscall_64+0x3d/0xb0 [ 22.388695][ T294] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 22.394423][ T294] RIP: 0033:0x7f137d1b4759 [ 22.398678][ T294] 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 [ 22.418144][ T294] RSP: 002b:00007f137d173218 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 22.426365][ T294] RAX: ffffffffffffffda RBX: 00007f137d2443c8 RCX: 00007f137d1b4759 [ 22.434174][ T294] RDX: 00007f137d1b4759 RSI: 0000000000000000 RDI: 0000000020000080 [ 22.441987][ T294] RBP: 00007f137d2443c0 R08: 0000000000000000 R09: 0000000000000000 [ 22.449798][ T294] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f137d2110fc [ 22.457610][ T294] R13: 00007f137d209039 R14: 0030656c69662f2e R15: 00007f137d20f0f8 [ 22.465423][ T294] [pid 296] futex(0x7f137d2443d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 293] exit_group(0) = ? [pid 296] <... futex resumed>) = ? [pid 296] +++ exited with 0 +++ [ 22.468283][ T294] Modules linked in: [ 22.472187][ T294] ---[ end trace 3d19c378f4837c0d ]--- [ 22.477517][ T294] RIP: 0010:filename_create+0x2d8/0x530 [ 22.482865][ T294] 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 [ 22.502354][ T294] RSP: 0000:ffffc900009f7d20 EFLAGS: 00010247 [ 22.508177][ T294] RAX: 0000000000000000 RBX: 1ffff9200013ef00 RCX: dffffc0000000000 [ 22.516035][ T294] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000000 [ 22.523870][ T294] RBP: ffffc900009f7e10 R08: ffffffff81c09428 R09: ffffed102384e5e8 [ 22.531662][ T294] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 22.539430][ T294] R13: 0000000000000600 R14: 0000000000000005 R15: ffffc900009f7e80 [ 22.547350][ T294] FS: 00007f137d1736c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 22.556130][ T294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.562530][ T294] CR2: 00007f137d2085f8 CR3: 000000011e7c3000 CR4: 00000000003506b0 [ 22.570367][ T294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.578134][ T294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.586015][ T294] Kernel panic - not syncing: Fatal exception [ 22.592189][ T294] Kernel Offset: disabled [ 22.596322][ T294] Rebooting in 86400 seconds..