./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3571472867 <...> Warning: Permanently added '10.128.0.77' (ED25519) to the list of known hosts. execve("./syz-executor3571472867", ["./syz-executor3571472867"], 0x7ffcc481f3a0 /* 10 vars */) = 0 brk(NULL) = 0x5555848e3000 brk(0x5555848e3d40) = 0x5555848e3d40 arch_prctl(ARCH_SET_FS, 0x5555848e33c0) = 0 set_tid_address(0x5555848e3690) = 295 set_robust_list(0x5555848e36a0, 24) = 0 rseq(0x5555848e3ce0, 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-executor3571472867", 4096) = 28 getrandom("\x35\x38\xd7\xcf\x7b\x3b\xa3\x0e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555848e3d40 brk(0x555584904d40) = 0x555584904d40 brk(0x555584905000) = 0x555584905000 mprotect(0x7fdc36c97000, 16384, PROT_READ) = 0 mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000 mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000 mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000 write(1, "executing program\n", 18executing program ) = 18 futex(0x7fdc36c9d3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fdc36c39400, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fdc36c2aa80}, 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) = 0x7fdc36bb2000 mprotect(0x7fdc36bb3000, 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=0x7fdc36bd2990, parent_tid=0x7fdc36bd2990, exit_signal=0, stack=0x7fdc36bb2000, stack_size=0x20300, tls=0x7fdc36bd26c0} => {parent_tid=[296]}, 88) = 296 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7fdc36c9d3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7fdc36c9d3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 296 attached [pid 296] set_robust_list(0x7fdc36bd29a0, 24) = 0 [pid 296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 296] mkdir("./file0", 000) = 0 [pid 296] futex(0x7fdc36c9d3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fdc36c9d3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fdc36c9d3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 296] futex(0x7fdc36c9d3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fdc36c9d3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fdc36c9d3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=00000000"...) = 0 [pid 296] futex(0x7fdc36c9d3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fdc36c9d3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fdc36c9d3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] 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 296] futex(0x7fdc36c9d3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fdc36c9d3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fdc36c9d3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [ 28.966088][ T24] audit: type=1400 audit(1740610575.069:66): avc: denied { execmem } for pid=295 comm="syz-executor357" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 28.985677][ T24] audit: type=1400 audit(1740610575.069:67): avc: denied { read write } for pid=295 comm="syz-executor357" 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 296] read(3, [pid 295] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 295] futex(0x7fdc36c9d3fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fdc36b91000 [pid 295] mprotect(0x7fdc36b92000, 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=0x7fdc36bb1990, parent_tid=0x7fdc36bb1990, exit_signal=0, stack=0x7fdc36b91000, stack_size=0x20300, tls=0x7fdc36bb16c0} => {parent_tid=[298]}, 88) = 298 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] futex(0x7fdc36c9d3f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fdc36c9d3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 298 attached [pid 298] set_robust_list(0x7fdc36bb19a0, 24) = 0 [pid 298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 298] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x27\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfd\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", 80) = 80 [pid 298] futex(0x7fdc36c9d3fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fdc36c9d3f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fdc36c9d3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... futex resumed>) = 1 [pid 298] mkdir("./file0/file0/file0", 0777 [pid 296] <... read resumed>"\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\x2a\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 296] write(3, "\x9f\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 159) = 159 [pid 296] futex(0x7fdc36c9d3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 29.009205][ T24] audit: type=1400 audit(1740610575.069:68): avc: denied { open } for pid=295 comm="syz-executor357" 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 [ 29.032528][ T24] audit: type=1400 audit(1740610575.069:69): avc: denied { mounton } for pid=295 comm="syz-executor357" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 29.039121][ T298] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 29.055272][ T24] audit: type=1400 audit(1740610575.069:70): avc: denied { mount } for pid=295 comm="syz-executor357" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 29.066456][ T298] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 29.066467][ T298] CPU: 0 PID: 298 Comm: syz-executor357 Not tainted 5.10.234-syzkaller-00023-g3f5f2283d684 #0 [ 29.066472][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 29.066507][ T298] RIP: 0010:step_into+0x1b9/0xec0 [ 29.066516][ T298] Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 c6 93 f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c1 0a 00 00 8b 1b 89 de 81 e6 00 00 07 [ 29.066531][ T298] RSP: 0018:ffffc90000bb77e0 EFLAGS: 00010203 [ 29.146739][ T298] RAX: 0000000000000001 RBX: 000000000000000f RCX: ffff88810d0a93c0 [ 29.154572][ T298] RDX: ffffc90000bb7bf8 RSI: 0000000000000000 RDI: 0000000000000000 [ 29.162359][ T298] RBP: ffffc90000bb7910 R08: ffffffff81b4ca8f R09: ffffed1024205f65 [ 29.170168][ T298] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000176f13 [ 29.177978][ T298] R13: dffffc0000000000 R14: ffffc90000bb7bc0 R15: 0000000000000010 [ 29.185789][ T298] FS: 00007fdc36bb16c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 29.194558][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.200978][ T298] CR2: 00007fdc36bb1d58 CR3: 000000011a602000 CR4: 00000000003506b0 [ 29.208801][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.216600][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.224409][ T298] Call Trace: [ 29.227546][ T298] ? __die_body+0x62/0xb0 [ 29.231705][ T298] ? die_addr+0x9f/0xd0 [ 29.235697][ T298] ? exc_general_protection+0x3ff/0x490 [ 29.241078][ T298] ? asm_exc_general_protection+0x1e/0x30 [ 29.246635][ T298] ? step_into+0x15f/0xec0 [ 29.250885][ T298] ? step_into+0x1b9/0xec0 [ 29.255136][ T298] ? set_root+0x3d0/0x3d0 [ 29.259305][ T298] ? __kasan_check_write+0x14/0x20 [ 29.264253][ T298] ? up_read+0x14/0x90 [ 29.268159][ T298] walk_component+0x359/0x610 [ 29.272670][ T298] ? nd_alloc_stack+0xf0/0xf0 [ 29.277186][ T298] ? security_inode_permission+0xb0/0xf0 [ 29.282654][ T298] ? inode_permission+0xf1/0x500 [ 29.287429][ T298] ? fuse_do_getattr+0x7a0/0x7a0 [ 29.292197][ T298] link_path_walk+0x5c7/0xbd0 [ 29.296724][ T298] ? handle_lookup_down+0x130/0x130 [ 29.301746][ T298] filename_parentat+0x264/0x670 [ 29.306523][ T298] ? kern_path_locked+0x450/0x450 [ 29.311390][ T298] filename_create+0xf7/0x750 [ 29.315895][ T298] ? __check_object_size+0x2e6/0x3c0 [ 29.321014][ T298] ? kern_path_create+0x40/0x40 [ 29.325701][ T298] do_mkdirat+0xcc/0x2c0 [ 29.329782][ T298] ? do_mknodat+0x450/0x450 [ 29.334119][ T298] __x64_sys_mkdir+0x60/0x70 [ 29.338548][ T298] do_syscall_64+0x34/0x70 [ 29.342799][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 29.348530][ T298] RIP: 0033:0x7fdc36c12687 [ 29.352782][ T298] Code: ff ff 77 07 31 c0 c3 0f 1f 40 00 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 [ 29.372225][ T298] RSP: 002b:00007fdc36bb10f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 29.380467][ T298] RAX: ffffffffffffffda RBX: 00007fdc36c9d3f8 RCX: 00007fdc36c12687 [ 29.388278][ T298] RDX: 00000000000f4240 RSI: 00000000000001ff RDI: 0000400000000200 [ 29.396089][ T298] RBP: 0000400000000200 R08: 0000000000000000 R09: 0000000000000000 [ 29.403900][ T298] R10: 00007ffc694f62a7 R11: 0000000000000206 R12: 0000000000000001 [pid 296] futex(0x7fdc36c9d3e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 295] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 29.411712][ T298] R13: 000040000000c280 R14: 00007ffc694f61c0 R15: 00007ffc694f62a8 [ 29.419522][ T298] Modules linked in: [ 29.424158][ T298] ---[ end trace 312f618c49864899 ]--- [ 29.429505][ T298] RIP: 0010:step_into+0x1b9/0xec0 [ 29.434277][ T298] Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 c6 93 f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c1 0a 00 00 8b 1b 89 de 81 e6 00 00 07 [ 29.453756][ T298] RSP: 0018:ffffc90000bb77e0 EFLAGS: 00010203 [ 29.459649][ T298] RAX: 0000000000000001 RBX: 000000000000000f RCX: ffff88810d0a93c0 [ 29.467458][ T298] RDX: ffffc90000bb7bf8 RSI: 0000000000000000 RDI: 0000000000000000 [ 29.475246][ T298] RBP: ffffc90000bb7910 R08: ffffffff81b4ca8f R09: ffffed1024205f65 [ 29.483091][ T298] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000176f13 [ 29.490897][ T298] R13: dffffc0000000000 R14: ffffc90000bb7bc0 R15: 0000000000000010 [ 29.498694][ T298] FS: 00007fdc36bb16c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 29.507468][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [pid 295] exit_group(0) = ? [pid 296] <... futex resumed>) = ? [pid 296] +++ exited with 0 +++ [ 29.513878][ T298] CR2: 00007fdc36bb1d58 CR3: 000000011a602000 CR4: 00000000003506b0 [ 29.521708][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.529510][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.537326][ T298] Kernel panic - not syncing: Fatal exception [ 29.543388][ T298] Kernel Offset: disabled [ 29.547510][ T298] Rebooting in 86400 seconds..