./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor91507020 <...> Warning: Permanently added '10.128.0.34' (ED25519) to the list of known hosts. execve("./syz-executor91507020", ["./syz-executor91507020"], 0x7ffc25026830 /* 10 vars */) = 0 brk(NULL) = 0x5555561ba000 brk(0x5555561bad40) = 0x5555561bad40 arch_prctl(ARCH_SET_FS, 0x5555561ba3c0) = 0 set_tid_address(0x5555561ba690) = 293 set_robust_list(0x5555561ba6a0, 24) = 0 rseq(0x5555561bace0, 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-executor91507020", 4096) = 26 getrandom("\xf2\x52\xde\xcf\xeb\x81\x33\x05", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555561bad40 brk(0x5555561dbd40) = 0x5555561dbd40 brk(0x5555561dc000) = 0x5555561dc000 mprotect(0x7f0b9e653000, 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 futex(0x7f0b9e6593ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f0b9e5f24e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f0b9e5e3b60}, 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) = 0x7f0b9e56e000 mprotect(0x7f0b9e56f000, 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=0x7f0b9e58e990, parent_tid=0x7f0b9e58e990, exit_signal=0, stack=0x7f0b9e56e000, stack_size=0x20300, tls=0x7f0b9e58e6c0} => {parent_tid=[294]}, 88) = 294 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f0b9e6593e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f0b9e6593ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 294 attached [pid 294] set_robust_list(0x7f0b9e58e9a0, 24) = 0 [pid 294] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 294] mkdir("./file0", 000) = 0 [pid 294] futex(0x7f0b9e6593ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7f0b9e6593e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7f0b9e6593ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 294] <... futex resumed>) = 1 [pid 294] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 294] futex(0x7f0b9e6593ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7f0b9e6593e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7f0b9e6593ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 294] <... futex resumed>) = 1 [pid 294] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 294] futex(0x7f0b9e6593ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7f0b9e6593e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7f0b9e6593ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 294] <... futex resumed>) = 1 [pid 294] 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\xf3\xff\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\x00\x00\x00\x00"..., 8224) = 104 [pid 294] futex(0x7f0b9e6593ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7f0b9e6593e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7f0b9e6593ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 294] <... futex resumed>) = 1 [pid 294] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x1f\x00\x00\x00\x00\x00\x00\x00\x90\xa3\xee\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", 80) = 80 [pid 294] futex(0x7f0b9e6593ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7f0b9e6593e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7f0b9e6593ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 294] <... futex resumed>) = 1 [ 21.183242][ T30] audit: type=1400 audit(1699584523.198:66): avc: denied { execmem } for pid=293 comm="syz-executor915" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.202632][ T30] audit: type=1400 audit(1699584523.208:67): avc: denied { read write } for pid=293 comm="syz-executor915" 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] read(3, [pid 293] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 293] futex(0x7f0b9e6593fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f0b9e54d000 [pid 293] mprotect(0x7f0b9e54e000, 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=0x7f0b9e56d990, parent_tid=0x7f0b9e56d990, exit_signal=0, stack=0x7f0b9e54d000, stack_size=0x20300, tls=0x7f0b9e56d6c0} => {parent_tid=[296]}, 88) = 296 [pid 293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 293] futex(0x7f0b9e6593f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7f0b9e6593fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 296 attached [pid 296] set_robust_list(0x7f0b9e56d9a0, 24) = 0 [pid 296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 296] write(-1, "\xa8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 168) = -1 EBADF (Bad file descriptor) [pid 296] futex(0x7f0b9e6593fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 293] <... futex resumed>) = 0 [pid 293] futex(0x7f0b9e6593f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7f0b9e6593fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] creat("./file0/file0", 000 [pid 294] <... 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\x28\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 294] write(3, "\xa8\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 168) = 168 [pid 294] futex(0x7f0b9e6593ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 21.226188][ T30] audit: type=1400 audit(1699584523.208:68): avc: denied { open } for pid=293 comm="syz-executor915" 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 [ 21.249504][ T30] audit: type=1400 audit(1699584523.208:69): avc: denied { mounton } for pid=293 comm="syz-executor915" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 21.254556][ T296] general protection fault, probably for non-canonical address 0xdffffc0000000009: 0000 [#1] PREEMPT SMP KASAN [ 21.272265][ T30] audit: type=1400 audit(1699584523.208:70): avc: denied { mount } for pid=293 comm="syz-executor915" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 21.283748][ T296] KASAN: null-ptr-deref in range [0x0000000000000048-0x000000000000004f] [ 21.283768][ T296] CPU: 1 PID: 296 Comm: syz-executor915 Not tainted 5.15.137-syzkaller-01792-g61cfd264993d #0 [ 21.283784][ T296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 [ 21.283792][ T296] RIP: 0010:fuse_atomic_open+0x26f/0x3750 [ 21.283830][ T296] Code: e0 40 4c 8b 64 24 48 75 07 e8 5d 31 67 ff eb 37 48 8b 44 24 68 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 13 2e a9 ff 48 83 3b 00 0f 84 a6 00 [ 21.283842][ T296] RSP: 0018:ffffc900009b72a0 EFLAGS: 00010206 [ 21.364909][ T296] RAX: 0000000000000009 RBX: 0000000000000048 RCX: dffffc0000000000 [ 21.372811][ T296] RDX: ffff88811deea780 RSI: 0000000000000040 RDI: 0000000000000000 [ 21.380617][ T296] RBP: ffffc900009b7910 R08: ffffffff8208c5c2 R09: 0000000000000003 [ 21.388530][ T296] R10: fffff52000136ce0 R11: dffffc0000000001 R12: ffff88810f2bfba8 [ 21.396377][ T296] R13: ffff888117e68800 R14: 1ffff92000136e70 R15: 0000000000000018 [ 21.404149][ T296] FS: 00007f0b9e56d6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 21.412914][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.419350][ T296] CR2: 00007fe4a174c304 CR3: 000000011df93000 CR4: 00000000003506a0 [ 21.427154][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.434958][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.442772][ T296] Call Trace: [ 21.445896][ T296] [ 21.448672][ T296] ? __die_body+0x62/0xb0 [ 21.452927][ T296] ? die_addr+0x9f/0xd0 [ 21.456919][ T296] ? exc_general_protection+0x311/0x4b0 [ 21.462298][ T296] ? asm_exc_general_protection+0x27/0x30 [ 21.467852][ T296] ? fuse_atomic_open+0x242/0x3750 [ 21.472798][ T296] ? fuse_atomic_open+0x26f/0x3750 [ 21.477746][ T296] ? slab_post_alloc_hook+0x72/0x2c0 [ 21.482865][ T296] ? avc_alloc_node+0x8f/0x500 [ 21.487467][ T296] ? avc_alloc_node+0x8f/0x500 [ 21.492066][ T296] ? fuse_rename2+0x4470/0x4470 [ 21.496755][ T296] ? __kasan_check_write+0x14/0x20 [ 21.501697][ T296] ? __kasan_check_write+0x14/0x20 [ 21.506644][ T296] ? _raw_spin_lock_irqsave+0xf9/0x210 [ 21.511941][ T296] ? _raw_spin_lock+0x1b0/0x1b0 [ 21.516627][ T296] ? avc_xperms_populate+0x4c7/0x590 [ 21.521750][ T296] ? _raw_spin_unlock_irqrestore+0x5c/0x80 [ 21.527389][ T296] ? avc_compute_av+0x4f5/0x830 [ 21.532079][ T296] ? avc_has_perm_noaudit+0x2dd/0x430 [ 21.537284][ T296] ? avc_denied+0x1b0/0x1b0 [ 21.541624][ T296] ? avc_has_perm+0x16f/0x260 [ 21.546140][ T296] ? avc_has_perm_noaudit+0x430/0x430 [ 21.551346][ T296] ? selinux_determine_inode_label+0x29c/0x3b0 [ 21.557335][ T296] ? may_create+0x3d3/0x540 [ 21.561672][ T296] ? selinux_determine_inode_label+0x3b0/0x3b0 [ 21.567663][ T296] ? make_kgid+0x6f0/0x6f0 [ 21.571920][ T296] ? selinux_inode_create+0x22/0x30 [ 21.576947][ T296] ? security_inode_create+0xbc/0x100 [ 21.582199][ T296] ? fuse_rename2+0x4470/0x4470 [ 21.586852][ T296] path_openat+0xfde/0x2f40 [ 21.591188][ T296] ? do_filp_open+0x460/0x460 [ 21.595698][ T296] do_filp_open+0x21c/0x460 [ 21.600039][ T296] ? vfs_tmpfile+0x2c0/0x2c0 [ 21.604467][ T296] do_sys_openat2+0x13f/0x830 [ 21.608978][ T296] ? ptrace_stop+0x6eb/0xa90 [ 21.613410][ T296] ? do_sys_open+0x220/0x220 [ 21.617826][ T296] ? _raw_spin_unlock_irq+0x4e/0x70 [ 21.622861][ T296] ? ptrace_notify+0x24c/0x350 [ 21.627462][ T296] __x64_sys_creat+0x11f/0x160 [ 21.632068][ T296] ? __x64_compat_sys_openat+0x290/0x290 [ 21.637528][ T296] ? __kasan_check_read+0x11/0x20 [ 21.642390][ T296] ? syscall_enter_from_user_mode+0x70/0x1b0 [ 21.648205][ T296] do_syscall_64+0x3d/0xb0 [ 21.652456][ T296] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.658182][ T296] RIP: 0033:0x7f0b9e5cc639 [ 21.662439][ T296] 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 [ 21.682486][ T296] RSP: 002b:00007f0b9e56d218 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 21.690731][ T296] RAX: ffffffffffffffda RBX: 00007f0b9e6593f8 RCX: 00007f0b9e5cc639 [ 21.698543][ T296] RDX: 00007f0b9e5cc639 RSI: 0000000000000000 RDI: 0000000020000100 [ 21.706356][ T296] RBP: 00007f0b9e6593f0 R08: 0000000000000000 R09: 0000000000000000 [ 21.714165][ T296] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0b9e626024 [ 21.721977][ T296] R13: 000000000000006e R14: 0030656c69662f30 R15: 2f30656c69662f2e [ 21.729878][ T296] [pid 294] futex(0x7f0b9e6593e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 293] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 21.732737][ T296] Modules linked in: [ 21.737144][ T296] ---[ end trace 28d18c8aa3ed8937 ]--- [ 21.742521][ T296] RIP: 0010:fuse_atomic_open+0x26f/0x3750 [ 21.748008][ T296] Code: e0 40 4c 8b 64 24 48 75 07 e8 5d 31 67 ff eb 37 48 8b 44 24 68 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 13 2e a9 ff 48 83 3b 00 0f 84 a6 00 [ 21.767436][ T296] RSP: 0018:ffffc900009b72a0 EFLAGS: 00010206 [ 21.773313][ T296] RAX: 0000000000000009 RBX: 0000000000000048 RCX: dffffc0000000000 [ 21.781403][ T296] RDX: ffff88811deea780 RSI: 0000000000000040 RDI: 0000000000000000 [ 21.789406][ T296] RBP: ffffc900009b7910 R08: ffffffff8208c5c2 R09: 0000000000000003 [ 21.797201][ T296] R10: fffff52000136ce0 R11: dffffc0000000001 R12: ffff88810f2bfba8 [ 21.805091][ T296] R13: ffff888117e68800 R14: 1ffff92000136e70 R15: 0000000000000018 [ 21.812939][ T296] FS: 00007f0b9e56d6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 21.821683][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.828109][ T296] CR2: 00007fe4a174c304 CR3: 000000011df93000 CR4: 00000000003506a0 [pid 293] exit_group(0) = ? [pid 294] <... futex resumed>) = ? [pid 294] +++ exited with 0 +++ [ 21.835985][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.843828][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.851912][ T296] Kernel panic - not syncing: Fatal exception [ 21.857927][ T296] Kernel Offset: disabled [ 21.862018][ T296] Rebooting in 86400 seconds..