./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3940692367 <...> Warning: Permanently added '10.128.1.30' (ED25519) to the list of known hosts. execve("./syz-executor3940692367", ["./syz-executor3940692367"], 0x7ffeacc18800 /* 10 vars */) = 0 brk(NULL) = 0x555556da8000 brk(0x555556da8d40) = 0x555556da8d40 arch_prctl(ARCH_SET_FS, 0x555556da83c0) = 0 set_tid_address(0x555556da8690) = 288 set_robust_list(0x555556da86a0, 24) = 0 rseq(0x555556da8ce0, 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-executor3940692367", 4096) = 28 getrandom("\x90\xd3\xe9\x69\x4b\x5a\x4d\x59", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556da8d40 brk(0x555556dc9d40) = 0x555556dc9d40 brk(0x555556dca000) = 0x555556dca000 mprotect(0x7f469c6f3000, 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(0x7f469c6f93ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f469c6924e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f469c683b60}, 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) = 0x7f469c60e000 mprotect(0x7f469c60f000, 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=0x7f469c62e990, parent_tid=0x7f469c62e990, exit_signal=0, stack=0x7f469c60e000, stack_size=0x20300, tls=0x7f469c62e6c0} => {parent_tid=[289]}, 88) = 289 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f469c6f93e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f469c6f93ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 289 attached [pid 289] set_robust_list(0x7f469c62e9a0, 24) = 0 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] mkdir("./file0", 000) = 0 [pid 289] futex(0x7f469c6f93ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f469c6f93e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f469c6f93ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 289] futex(0x7f469c6f93ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f469c6f93e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f469c6f93ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 289] futex(0x7f469c6f93ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f469c6f93e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f469c6f93ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 4 [pid 289] futex(0x7f469c6f93ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f469c6f93e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f469c6f93ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] mount(NULL, "./file0", "fuse", 0, "0x0000000000000004,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000000"...) = -1 EINVAL (Invalid argument) [pid 289] futex(0x7f469c6f93ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f469c6f93e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f469c6f93ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] umount2(NULL, 0) = -1 EFAULT (Bad address) [pid 289] futex(0x7f469c6f93ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f469c6f93e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f469c6f93ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [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", 8224) = 56 [ 22.397664][ T24] audit: type=1400 audit(1720328250.709:66): avc: denied { execmem } for pid=288 comm="syz-executor394" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.416909][ T24] audit: type=1400 audit(1720328250.729:67): avc: denied { read write } for pid=288 comm="syz-executor394" 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 [ 22.422550][ T289] fuse: Unknown parameter '0x0000000000000004' [pid 289] futex(0x7f469c6f93ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f469c6f93e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f469c6f93ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [ 22.448463][ T24] audit: type=1400 audit(1720328250.729:68): avc: denied { open } for pid=288 comm="syz-executor394" 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 [ 22.471782][ T24] audit: type=1400 audit(1720328250.739:69): avc: denied { mounton } for pid=288 comm="syz-executor394" 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 289] read(3, [pid 288] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 288] futex(0x7f469c6f93ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 288] futex(0x7f469c6f93fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f469c5ed000 [pid 288] mprotect(0x7f469c5ee000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 288] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 288] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f469c60d990, parent_tid=0x7f469c60d990, exit_signal=0, stack=0x7f469c5ed000, stack_size=0x20300, tls=0x7f469c60d6c0} => {parent_tid=[291]}, 88) = 291 [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] futex(0x7f469c6f93f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f469c6f93fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 291 attached [pid 291] set_robust_list(0x7f469c60d9a0, 24) = 0 [pid 291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 291] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x26\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 291] futex(0x7f469c6f93fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 288] <... futex resumed>) = 0 [pid 288] futex(0x7f469c6f93f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f469c6f93fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] openat(AT_FDCWD, "./file0/file0", O_WRONLY|O_CREAT|O_CLOEXEC, 000 [pid 289] <... 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\x23\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 289] write(3, "\xa7\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 167) = 167 [pid 289] futex(0x7f469c6f93ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 22.494274][ T24] audit: type=1400 audit(1720328250.739:70): avc: denied { mount } for pid=288 comm="syz-executor394" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 22.504528][ T291] general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN [ 22.516194][ T24] audit: type=1400 audit(1720328250.739:71): avc: denied { mounton } for pid=288 comm="syz-executor394" path="/root/file0" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=dir permissive=1 [ 22.527633][ T291] KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] [ 22.527644][ T291] CPU: 1 PID: 291 Comm: syz-executor394 Not tainted 5.10.218-syzkaller-00638-g3feee789f446 #0 [ 22.527649][ T291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 22.527681][ T291] RIP: 0010:fuse_atomic_open+0x27f/0x34e0 [ 22.527698][ T291] Code: e0 40 4c 8b 64 24 20 75 07 e8 4d 86 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 d3 19 aa ff 48 83 3b 00 0f 84 a9 00 [ 22.603151][ T291] RSP: 0018:ffffc90000b772e0 EFLAGS: 00010203 [ 22.609045][ T291] RAX: 0000000000000008 RBX: 0000000000000047 RCX: dffffc0000000000 [ 22.616857][ T291] RDX: ffff8881181fe2c0 RSI: 0000000000000040 RDI: 0000000000000000 [ 22.624670][ T291] RBP: ffffc90000b77910 R08: ffffffff81fe2422 R09: ffffed10239252ac [ 22.632483][ T291] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c929228 [ 22.640292][ T291] R13: ffff88811dab0000 R14: 1ffff9200016ee74 R15: 0000000000000017 [ 22.648129][ T291] FS: 00007f469c60d6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.656953][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.663376][ T291] CR2: 0000000020004320 CR3: 000000011da7f000 CR4: 00000000003506a0 [ 22.671190][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.679003][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.686808][ T291] Call Trace: [ 22.689942][ T291] ? __die_body+0x62/0xb0 [ 22.694100][ T291] ? die_addr+0x9f/0xd0 [ 22.698094][ T291] ? exc_general_protection+0x3ff/0x490 [ 22.703481][ T291] ? asm_exc_general_protection+0x1e/0x30 [ 22.709035][ T291] ? fuse_atomic_open+0x252/0x34e0 [ 22.713979][ T291] ? fuse_atomic_open+0x27f/0x34e0 [ 22.718926][ T291] ? fuse_rename2+0x4aa0/0x4aa0 [ 22.723612][ T291] ? avc_alloc_node+0x7e/0x360 [ 22.728217][ T291] ? __kasan_check_write+0x14/0x20 [ 22.733162][ T291] ? _raw_spin_lock_irqsave+0xf9/0x210 [ 22.738452][ T291] ? _raw_spin_lock+0x1b0/0x1b0 [ 22.743141][ T291] ? avc_xperms_populate+0x4c7/0x590 [ 22.748272][ T291] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 22.753910][ T291] ? avc_compute_av+0x4cc/0x690 [ 22.758595][ T291] ? avc_has_perm+0x275/0x400 [ 22.763105][ T291] ? avc_has_perm_noaudit+0x240/0x240 [ 22.768313][ T291] ? avc_has_perm_noaudit+0x158/0x240 [ 22.773518][ T291] ? security_transition_sid+0x7d/0x90 [ 22.778815][ T291] ? may_create+0x65a/0x900 [ 22.783151][ T291] ? show_sid+0x250/0x250 [ 22.787319][ T291] ? d_hash_and_lookup+0x1e0/0x1e0 [ 22.792267][ T291] ? from_kgid+0x1a3/0x730 [ 22.796520][ T291] ? selinux_inode_create+0x22/0x30 [ 22.801552][ T291] ? security_inode_create+0xbc/0x100 [ 22.806772][ T291] ? fuse_rename2+0x4aa0/0x4aa0 [ 22.811449][ T291] path_openat+0xff0/0x3000 [ 22.815786][ T291] ? do_filp_open+0x460/0x460 [ 22.820298][ T291] do_filp_open+0x21c/0x460 [ 22.824636][ T291] ? vfs_tmpfile+0x2b0/0x2b0 [ 22.829066][ T291] ? get_unused_fd_flags+0x94/0xa0 [ 22.834013][ T291] do_sys_openat2+0x13f/0x6f0 [ 22.838527][ T291] ? cgroup_leave_frozen+0x164/0x2c0 [ 22.843662][ T291] ? ptrace_stop+0x6dc/0xa30 [ 22.848079][ T291] ? do_sys_open+0x220/0x220 [ 22.852507][ T291] ? _raw_spin_unlock_irq+0x4e/0x70 [ 22.857534][ T291] ? ptrace_notify+0x24c/0x350 [ 22.862132][ T291] __x64_sys_openat+0x243/0x290 [ 22.866818][ T291] ? __ia32_sys_open+0x270/0x270 [ 22.871595][ T291] ? syscall_enter_from_user_mode+0x57/0x1a0 [ 22.877409][ T291] do_syscall_64+0x34/0x70 [ 22.881663][ T291] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 22.887398][ T291] RIP: 0033:0x7f469c66c639 [ 22.891644][ T291] 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 [ 22.911084][ T291] RSP: 002b:00007f469c60d218 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 22.919328][ T291] RAX: ffffffffffffffda RBX: 00007f469c6f93f8 RCX: 00007f469c66c639 [ 22.927135][ T291] RDX: 0000000000080041 RSI: 0000000020000000 RDI: 00000000ffffff9c [ 22.934956][ T291] RBP: 00007f469c6f93f0 R08: 0000000000000000 R09: 0000000000000000 [ 22.942764][ T291] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f469c6c603c [pid 289] futex(0x7f469c6f93e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 288] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 22.950576][ T291] R13: 000000000000006e R14: 0030656c69662f30 R15: 2f30656c69662f2e [ 22.958386][ T291] Modules linked in: [ 22.962640][ T291] ---[ end trace ce7b1bec5f512235 ]--- [ 22.968072][ T291] RIP: 0010:fuse_atomic_open+0x27f/0x34e0 [ 22.973604][ T291] Code: e0 40 4c 8b 64 24 20 75 07 e8 4d 86 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 d3 19 aa ff 48 83 3b 00 0f 84 a9 00 [ 22.993112][ T291] RSP: 0018:ffffc90000b772e0 EFLAGS: 00010203 [ 22.998945][ T291] RAX: 0000000000000008 RBX: 0000000000000047 RCX: dffffc0000000000 [ 23.006940][ T291] RDX: ffff8881181fe2c0 RSI: 0000000000000040 RDI: 0000000000000000 [ 23.014868][ T291] RBP: ffffc90000b77910 R08: ffffffff81fe2422 R09: ffffed10239252ac [ 23.022685][ T291] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c929228 [ 23.030492][ T291] R13: ffff88811dab0000 R14: 1ffff9200016ee74 R15: 0000000000000017 [ 23.038281][ T291] FS: 00007f469c60d6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [pid 288] exit_group(0) = ? [pid 289] <... futex resumed>) = ? [pid 289] +++ exited with 0 +++ [ 23.047033][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.053492][ T291] CR2: 0000000020004320 CR3: 000000011da7f000 CR4: 00000000003506a0 [ 23.061287][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.069103][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.076889][ T291] Kernel panic - not syncing: Fatal exception [ 23.082984][ T291] Kernel Offset: disabled [ 23.087111][ T291] Rebooting in 86400 seconds..