./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1673149170 <...> Warning: Permanently added '10.128.0.112' (ED25519) to the list of known hosts. execve("./syz-executor1673149170", ["./syz-executor1673149170"], 0x7ffc76073970 /* 10 vars */) = 0 brk(NULL) = 0x555580c6b000 brk(0x555580c6bd40) = 0x555580c6bd40 arch_prctl(ARCH_SET_FS, 0x555580c6b3c0) = 0 set_tid_address(0x555580c6b690) = 286 set_robust_list(0x555580c6b6a0, 24) = 0 rseq(0x555580c6bce0, 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-executor1673149170", 4096) = 28 getrandom("\x08\xf9\xaa\xfe\xee\xf2\x7c\x2b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555580c6bd40 brk(0x555580c8cd40) = 0x555580c8cd40 brk(0x555580c8d000) = 0x555580c8d000 mprotect(0x7fa23de9c000, 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(0x7fa23dea23cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fa23de385f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fa23de29c70}, 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) = 0x7fa23ddb1000 mprotect(0x7fa23ddb2000, 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=0x7fa23ddd1990, parent_tid=0x7fa23ddd1990, exit_signal=0, stack=0x7fa23ddb1000, stack_size=0x20300, tls=0x7fa23ddd16c0} => {parent_tid=[287]}, 88) = 287 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7fa23dea23c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7fa23dea23cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 287 attached [pid 287] set_robust_list(0x7fa23ddd19a0, 24) = 0 [pid 287] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 287] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 287] futex(0x7fa23dea23cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 287] futex(0x7fa23dea23c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7fa23dea23c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 286] futex(0x7fa23dea23cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] <... futex resumed>) = 0 [pid 287] mkdir("./file0", 0777) = 0 [pid 287] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [ 19.827413][ T24] audit: type=1400 audit(1743743509.600:66): avc: denied { execmem } for pid=286 comm="syz-executor167" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 19.836329][ T24] audit: type=1400 audit(1743743509.620:67): avc: denied { read write } for pid=286 comm="syz-executor167" 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 [ 19.842922][ T24] audit: type=1400 audit(1743743509.620:68): avc: denied { open } for pid=286 comm="syz-executor167" 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 [pid 287] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 286] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7fa23dea23dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fa23dd90000 [pid 286] mprotect(0x7fa23dd91000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 286] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 286] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fa23ddb0990, parent_tid=0x7fa23ddb0990, exit_signal=0, stack=0x7fa23dd90000, stack_size=0x20300, tls=0x7fa23ddb06c0}./strace-static-x86_64: Process 289 attached => {parent_tid=[289]}, 88) = 289 [pid 286] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 286] futex(0x7fa23dea23d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7fa23dea23dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] set_robust_list(0x7fa23ddb09a0, 24) = 0 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] 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", 8192) = 56 [pid 289] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x2b\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 289] futex(0x7fa23dea23dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7fa23dea23d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7fa23dea23dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] 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\x1f\x01\x00\x00\x00\x00\x00\x00\x00\x80\x01\x00\x00\x00\x00\x00", 8192) = 48 [pid 289] 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 287] <... openat resumed>) = 4 [pid 287] chdir("./file0" [pid 289] <... write resumed>) = 32 [pid 289] futex(0x7fa23dea23dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7fa23dea23d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7fa23dea23dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] 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\x1f\x01\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00", 8192) = 48 [pid 289] write(3, "\x10\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00", 16 [pid 287] <... chdir resumed>) = 0 [pid 287] futex(0x7fa23dea23cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fa23dea23c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... write resumed>) = 16 [pid 289] futex(0x7fa23dea23dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7fa23dea23c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 287] <... futex resumed>) = 0 [pid 286] futex(0x7fa23dea23cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] read(3, [pid 289] <... futex resumed>) = 1 [pid 289] futex(0x7fa23dea23d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7fa23dea23cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7fa23dea23d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 286] futex(0x7fa23dea23dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 0 [ 19.858684][ T24] audit: type=1400 audit(1743743509.620:69): avc: denied { mounton } for pid=286 comm="syz-executor167" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 19.881280][ T24] audit: type=1400 audit(1743743509.620:70): avc: denied { mount } for pid=286 comm="syz-executor167" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 289] openat(AT_FDCWD, "./file0", O_RDONLY|O_CREAT|O_APPEND|O_NOATIME|O_CLOEXEC|O_DIRECTORY, 0573 [pid 287] <... 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\x21\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 287] 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\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"..., 149) = 149 [pid 287] futex(0x7fa23dea23cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7fa23dea23c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7fa23dea23dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [ 19.959045][ T289] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN [ 19.970732][ T289] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 19.978947][ T289] CPU: 0 PID: 289 Comm: syz-executor167 Not tainted 5.10.234-syzkaller-00033-g094fc3778d6b #0 [ 19.989004][ T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 19.999119][ T289] RIP: 0010:fuse_atomic_open+0x27f/0x34e0 [ 20.004655][ T289] Code: e0 40 4c 8b 64 24 20 75 07 e8 ed 55 6c ff eb 37 48 8b 44 24 60 48 8d 58 30 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 03 f5 a9 ff 48 83 3b 00 0f 84 a9 00 [ 20.024094][ T289] RSP: 0018:ffffc90000b67300 EFLAGS: 00010207 [ 20.030224][ T289] RAX: 0000000000000006 RBX: 0000000000000035 RCX: dffffc0000000000 [ 20.038029][ T289] RDX: ffff88810c99cf00 RSI: 0000000000000040 RDI: 0000000000000000 [ 20.045841][ T289] RBP: ffffc90000b67930 R08: ffffffff81fe6952 R09: ffffed1024200f2c [ 20.053759][ T289] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888121007628 [ 20.061718][ T289] R13: ffff88811fcdb800 R14: 1ffff9200016ce78 R15: 0000000000000005 [ 20.069521][ T289] FS: 00007fa23ddb06c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 20.078283][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.084707][ T289] CR2: 000055a811c06148 CR3: 0000000105b8e000 CR4: 00000000003506b0 [ 20.092527][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.100345][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [pid 286] exit_group(0) = ? [pid 287] <... futex resumed>) = ? [pid 287] +++ exited with 0 +++ [ 20.108138][ T289] Call Trace: [ 20.111272][ T289] ? __die_body+0x62/0xb0 [ 20.115434][ T289] ? die_addr+0x9f/0xd0 [ 20.119428][ T289] ? exc_general_protection+0x3ff/0x490 [ 20.124816][ T289] ? asm_exc_general_protection+0x1e/0x30 [ 20.130365][ T289] ? fuse_atomic_open+0x252/0x34e0 [ 20.135308][ T289] ? fuse_atomic_open+0x27f/0x34e0 [ 20.140259][ T289] ? fuse_rename2+0x4aa0/0x4aa0 [ 20.144945][ T289] ? avc_alloc_node+0x7e/0x360 [ 20.149560][ T289] ? __kasan_check_write+0x14/0x20 [ 20.154515][ T289] ? _raw_spin_lock_irqsave+0xf9/0x210 [ 20.159801][ T289] ? _raw_spin_lock+0x1b0/0x1b0 [ 20.164476][ T289] ? avc_xperms_populate+0x4c7/0x590 [ 20.169598][ T289] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 20.175238][ T289] ? avc_compute_av+0x4cc/0x690 [ 20.180013][ T289] ? avc_has_perm+0x275/0x400 [ 20.184524][ T289] ? avc_has_perm_noaudit+0x240/0x240 [ 20.189820][ T289] ? avc_has_perm_noaudit+0x158/0x240 [ 20.195025][ T289] ? security_transition_sid+0x7d/0x90 [ 20.200318][ T289] ? may_create+0x65a/0x900 [ 20.204660][ T289] ? show_sid+0x250/0x250 [ 20.208835][ T289] ? d_hash_and_lookup+0x1e0/0x1e0 [ 20.214037][ T289] ? from_kgid+0x1a3/0x730 [ 20.218289][ T289] ? selinux_inode_create+0x22/0x30 [ 20.223334][ T289] ? security_inode_create+0xbc/0x100 [ 20.228538][ T289] ? fuse_rename2+0x4aa0/0x4aa0 [ 20.233345][ T289] path_openat+0xff0/0x3000 [ 20.237947][ T289] ? do_filp_open+0x460/0x460 [ 20.242457][ T289] do_filp_open+0x21c/0x460 [ 20.246928][ T289] ? vfs_tmpfile+0x2b0/0x2b0 [ 20.251337][ T289] ? get_unused_fd_flags+0x94/0xa0 [ 20.256290][ T289] do_sys_openat2+0x13f/0x710 [ 20.260810][ T289] ? ptrace_stop+0x6dc/0xa30 [ 20.265226][ T289] ? do_sys_open+0x220/0x220 [ 20.269733][ T289] ? _raw_spin_unlock_irq+0x4e/0x70 [ 20.274780][ T289] ? ptrace_notify+0x24c/0x350 [ 20.279379][ T289] __x64_sys_openat+0x243/0x290 [ 20.284061][ T289] ? __ia32_sys_open+0x270/0x270 [ 20.288826][ T289] ? syscall_enter_from_user_mode+0x57/0x1a0 [ 20.294637][ T289] do_syscall_64+0x34/0x70 [ 20.298898][ T289] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 20.304628][ T289] RIP: 0033:0x7fa23de12719 [ 20.308959][ T289] 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 [ 20.328401][ T289] RSP: 002b:00007fa23ddb0218 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 20.336648][ T289] RAX: ffffffffffffffda RBX: 00007fa23dea23d8 RCX: 00007fa23de12719 [ 20.344910][ T289] RDX: 00000000000d0440 RSI: 0000200000000100 RDI: 00000000ffffff9c [ 20.352714][ T289] RBP: 00007fa23dea23d0 R08: 0000000000000000 R09: 0000000000000000 [ 20.360521][ T289] R10: 000000000000017b R11: 0000000000000246 R12: 00007fa23de6f114 [ 20.368332][ T289] R13: 0000200000000100 R14: 0000000000000000 R15: 0030656c69662f2e [ 20.376144][ T289] Modules linked in: [ 20.380411][ T289] ---[ end trace fa656481fa6e2854 ]--- [ 20.385798][ T289] RIP: 0010:fuse_atomic_open+0x27f/0x34e0 [ 20.391450][ T289] Code: e0 40 4c 8b 64 24 20 75 07 e8 ed 55 6c ff eb 37 48 8b 44 24 60 48 8d 58 30 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 03 f5 a9 ff 48 83 3b 00 0f 84 a9 00 [ 20.411171][ T289] RSP: 0018:ffffc90000b67300 EFLAGS: 00010207 [ 20.417055][ T289] RAX: 0000000000000006 RBX: 0000000000000035 RCX: dffffc0000000000 [ 20.424912][ T289] RDX: ffff88810c99cf00 RSI: 0000000000000040 RDI: 0000000000000000 [ 20.432707][ T289] RBP: ffffc90000b67930 R08: ffffffff81fe6952 R09: ffffed1024200f2c [ 20.440511][ T289] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888121007628 [ 20.448295][ T289] R13: ffff88811fcdb800 R14: 1ffff9200016ce78 R15: 0000000000000005 [ 20.456259][ T289] FS: 00007fa23ddb06c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 20.465028][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.471466][ T289] CR2: 000055a811c06148 CR3: 0000000105b8e000 CR4: 00000000003506b0 [ 20.479228][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.487090][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.494866][ T289] Kernel panic - not syncing: Fatal exception [ 20.500944][ T289] Kernel Offset: disabled [ 20.505074][ T289] Rebooting in 86400 seconds..