./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor644110534 <...> Warning: Permanently added '10.128.0.173' (ED25519) to the list of known hosts. execve("./syz-executor644110534", ["./syz-executor644110534"], 0x7ffc40377c50 /* 10 vars */) = 0 brk(NULL) = 0x5555875fe000 brk(0x5555875fed40) = 0x5555875fed40 arch_prctl(ARCH_SET_FS, 0x5555875fe3c0) = 0 set_tid_address(0x5555875fe690) = 289 set_robust_list(0x5555875fe6a0, 24) = 0 rseq(0x5555875fece0, 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-executor644110534", 4096) = 27 getrandom("\xcf\xd4\xd1\x88\xf1\x72\x83\xc2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555875fed40 brk(0x55558761fd40) = 0x55558761fd40 brk(0x555587620000) = 0x555587620000 mprotect(0x7fd9d88dc000, 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(0x7fd9d88e23ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fd9d887b620, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fd9d886cca0}, 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) = 0x7fd9d87f7000 mprotect(0x7fd9d87f8000, 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=0x7fd9d8817990, parent_tid=0x7fd9d8817990, exit_signal=0, stack=0x7fd9d87f7000, stack_size=0x20300, tls=0x7fd9d88176c0} => {parent_tid=[290]}, 88) = 290 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7fd9d88e23e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7fd9d88e23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x7fd9d88179a0, 24) = 0 [pid 290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 290] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 290] futex(0x7fd9d88e23ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7fd9d88e23e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7fd9d88e23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 290] futex(0x7fd9d88e23ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7fd9d88e23e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7fd9d88e23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 290] futex(0x7fd9d88e23ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7fd9d88e23e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7fd9d88e23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] 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 290] futex(0x7fd9d88e23ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7fd9d88e23e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7fd9d88e23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [ 23.171999][ T24] audit: type=1400 audit(1743894008.760:66): avc: denied { execmem } for pid=289 comm="syz-executor644" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.191515][ T24] audit: type=1400 audit(1743894008.780:67): avc: denied { read write } for pid=289 comm="syz-executor644" 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 290] read(3, [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7fd9d88e23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7fd9d88e23fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fd9d87d6000 [pid 289] mprotect(0x7fd9d87d7000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 289] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 289] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fd9d87f6990, parent_tid=0x7fd9d87f6990, exit_signal=0, stack=0x7fd9d87d6000, stack_size=0x20300, tls=0x7fd9d87f66c0} => {parent_tid=[292]}, 88) = 292 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7fd9d88e23f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7fd9d88e23fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 292 attached [ 23.214832][ T24] audit: type=1400 audit(1743894008.780:68): avc: denied { open } for pid=289 comm="syz-executor644" 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 [ 23.238008][ T24] audit: type=1400 audit(1743894008.780:69): avc: denied { mounton } for pid=289 comm="syz-executor644" 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 292] set_robust_list(0x7fd9d87f69a0, 24) = 0 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] 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 292] futex(0x7fd9d88e23fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 292] <... futex resumed>) = 1 [pid 289] futex(0x7fd9d88e23f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] futex(0x7fd9d88e23fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 292] <... futex resumed>) = 0 [pid 289] futex(0x7fd9d88e23fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] futex(0x7fd9d88e23f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 289] futex(0x7fd9d88e23f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 292] <... futex resumed>) = 0 [pid 289] futex(0x7fd9d88e23fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] futex(0x7fd9d88e23fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 292] <... futex resumed>) = 1 [pid 289] futex(0x7fd9d88e23f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7fd9d88e23fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] open("./file0/file0", O_RDWR [pid 290] <... 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\x24\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 290] write(3, "\xa7\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 167) = 167 [pid 290] futex(0x7fd9d88e23ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 23.260626][ T24] audit: type=1400 audit(1743894008.780:70): avc: denied { mount } for pid=289 comm="syz-executor644" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 23.286215][ T292] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 23.297735][ T292] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 23.305979][ T292] CPU: 0 PID: 292 Comm: syz-executor644 Not tainted 5.10.234-syzkaller-00033-g094fc3778d6b #0 [pid 290] futex(0x7fd9d88e23e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7fd9d88e23fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [ 23.316042][ T292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 23.326049][ T292] RIP: 0010:path_openat+0x17ab/0x3000 [ 23.331233][ T292] Code: b6 04 30 84 c0 0f 85 d9 07 00 00 48 8b 44 24 30 80 60 01 f8 e9 69 ee ff ff e8 11 d6 b6 ff 4c 8b 64 24 20 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 8f 07 00 00 41 8b 1f be 00 00 70 00 21 [ 23.350704][ T292] RSP: 0018:ffffc90000b57940 EFLAGS: 00010203 [ 23.356578][ T292] RAX: 0000000000000002 RBX: ffff88810caa1218 RCX: ffff88810d11e2c0 [ 23.364515][ T292] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 23.372322][ T292] RBP: ffffc90000b57b70 R08: ffffffff81b6a338 R09: ffffed10237f26b6 [ 23.380132][ T292] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811bf93580 [ 23.387943][ T292] R13: 0000000000008002 R14: dffffc0000000000 R15: 0000000000000017 [ 23.395756][ T292] FS: 00007fd9d87f66c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.404521][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.410942][ T292] CR2: 00007fd9d87f6d58 CR3: 00000001057d0000 CR4: 00000000003506b0 [pid 289] exit_group(0) = ? [pid 290] <... futex resumed>) = ? [pid 290] +++ exited with 0 +++ [ 23.418777][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.426568][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.434373][ T292] Call Trace: [ 23.437517][ T292] ? __die_body+0x62/0xb0 [ 23.441669][ T292] ? die_addr+0x9f/0xd0 [ 23.445663][ T292] ? exc_general_protection+0x3ff/0x490 [ 23.451055][ T292] ? asm_exc_general_protection+0x1e/0x30 [ 23.456609][ T292] ? fast_dput+0x78/0x2a0 [ 23.460767][ T292] ? path_openat+0x17ab/0x3000 [ 23.465372][ T292] ? do_filp_open+0x460/0x460 [ 23.469882][ T292] do_filp_open+0x21c/0x460 [ 23.474220][ T292] ? vfs_tmpfile+0x2b0/0x2b0 [ 23.478652][ T292] ? get_unused_fd_flags+0x94/0xa0 [ 23.483591][ T292] do_sys_openat2+0x13f/0x710 [ 23.488107][ T292] ? ptrace_stop+0x6dc/0xa30 [ 23.492534][ T292] ? do_sys_open+0x220/0x220 [ 23.496953][ T292] ? _raw_spin_unlock_irq+0x4e/0x70 [ 23.501994][ T292] ? ptrace_notify+0x24c/0x350 [ 23.506599][ T292] __x64_sys_open+0x221/0x270 [ 23.511102][ T292] ? do_sys_openat2+0x710/0x710 [ 23.515792][ T292] ? syscall_enter_from_user_mode+0x57/0x1a0 [ 23.521606][ T292] do_syscall_64+0x34/0x70 [ 23.525855][ T292] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.531584][ T292] RIP: 0033:0x7fd9d8855779 [ 23.535837][ T292] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 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 [ 23.555277][ T292] RSP: 002b:00007fd9d87f6218 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 23.563534][ T292] RAX: ffffffffffffffda RBX: 00007fd9d88e23f8 RCX: 00007fd9d8855779 [ 23.571333][ T292] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00002000000001c0 [ 23.579153][ T292] RBP: 00007fd9d88e23f0 R08: 0000000000000000 R09: 0000000000000000 [ 23.587128][ T292] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd9d88af03c [ 23.594933][ T292] R13: 00002000000042c0 R14: 00002000000001c0 R15: 00007ffc3b2211c8 [ 23.602745][ T292] Modules linked in: [ 23.607696][ T292] ---[ end trace 315a2a51a1943f38 ]--- [ 23.612983][ T292] RIP: 0010:path_openat+0x17ab/0x3000 [ 23.618210][ T292] Code: b6 04 30 84 c0 0f 85 d9 07 00 00 48 8b 44 24 30 80 60 01 f8 e9 69 ee ff ff e8 11 d6 b6 ff 4c 8b 64 24 20 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 8f 07 00 00 41 8b 1f be 00 00 70 00 21 [ 23.637633][ T292] RSP: 0018:ffffc90000b57940 EFLAGS: 00010203 [ 23.643514][ T292] RAX: 0000000000000002 RBX: ffff88810caa1218 RCX: ffff88810d11e2c0 [ 23.651425][ T292] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 23.659267][ T292] RBP: ffffc90000b57b70 R08: ffffffff81b6a338 R09: ffffed10237f26b6 [ 23.667052][ T292] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811bf93580 [ 23.674897][ T292] R13: 0000000000008002 R14: dffffc0000000000 R15: 0000000000000017 [ 23.682736][ T292] FS: 00007fd9d87f66c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.691466][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.697871][ T292] CR2: 00007fd9d87f6d58 CR3: 00000001057d0000 CR4: 00000000003506b0 [ 23.705760][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.713613][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.721403][ T292] Kernel panic - not syncing: Fatal exception [ 23.727367][ T292] Kernel Offset: disabled [ 23.731450][ T292] Rebooting in 86400 seconds..