./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3055206751 <...> Warning: Permanently added '10.128.1.178' (ED25519) to the list of known hosts. execve("./syz-executor3055206751", ["./syz-executor3055206751"], 0x7ffe5b509850 /* 10 vars */) = 0 brk(NULL) = 0x555555907000 brk(0x555555907d40) = 0x555555907d40 arch_prctl(ARCH_SET_FS, 0x5555559073c0) = 0 set_tid_address(0x555555907690) = 294 set_robust_list(0x5555559076a0, 24) = 0 rseq(0x555555907ce0, 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-executor3055206751", 4096) = 28 getrandom("\x90\x9c\x62\x3e\xcb\xe9\x9d\x9d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555907d40 brk(0x555555928d40) = 0x555555928d40 brk(0x555555929000) = 0x555555929000 mprotect(0x7f4516657000, 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(0x7f451665d40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f45165fa160, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f45165eb7e0}, 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) = 0x7f4516576000 mprotect(0x7f4516577000, 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=0x7f4516596990, parent_tid=0x7f4516596990, exit_signal=0, stack=0x7f4516576000, stack_size=0x20300, tls=0x7f45165966c0} => {parent_tid=[295]}, 88) = 295 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f451665d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f451665d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x7f45165969a0, 24) = 0 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] mkdir("./file0", 000) = 0 [pid 295] futex(0x7f451665d40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f451665d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f451665d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 295] futex(0x7f451665d40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f451665d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f451665d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=00000000"...) = 0 [pid 295] futex(0x7f451665d40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f451665d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f451665d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] 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\x25\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x73\x01\x00\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 295] futex(0x7f451665d40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f451665d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f451665d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] 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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 295] futex(0x7f451665d40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f451665d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f451665d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [ 22.048956][ T28] audit: type=1400 audit(1694929099.939:66): avc: denied { execmem } for pid=294 comm="syz-executor305" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.068338][ T28] audit: type=1400 audit(1694929099.939:67): avc: denied { read write } for pid=294 comm="syz-executor305" name="fuse" dev="devtmpfs" ino=93 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [pid 295] rename("./file0/../file0/file0", "./file0/../file0/file0" [pid 294] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 294] futex(0x7f451665d41c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4516555000 [pid 294] mprotect(0x7f4516556000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 294] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 294] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f4516575990, parent_tid=0x7f4516575990, exit_signal=0, stack=0x7f4516555000, stack_size=0x20300, tls=0x7f45165756c0} => {parent_tid=[297]}, 88) = 297 [pid 294] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 294] futex(0x7f451665d418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f451665d41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 297 attached [pid 297] set_robust_list(0x7f45165759a0, 24) = 0 [pid 297] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 297] read(3, "\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\x27\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8224) = 46 [pid 297] futex(0x7f451665d41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f451665d418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f451665d41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 297] <... futex resumed>) = 1 [ 22.091798][ T28] audit: type=1400 audit(1694929099.939:68): avc: denied { open } for pid=294 comm="syz-executor305" path="/dev/fuse" dev="devtmpfs" ino=93 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 22.108347][ T295] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 22.115448][ T28] audit: type=1400 audit(1694929099.939:69): avc: denied { mounton } for pid=294 comm="syz-executor305" 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 297] write(3, "\xa0\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x80\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x0a\x5a\x00\x00\x00\x00\x00\x00\xfa\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00"..., 160) = 160 [pid 297] futex(0x7f451665d41c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 22.126584][ T295] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 22.126602][ T295] CPU: 1 PID: 295 Comm: syz-executor305 Not tainted 6.1.25-syzkaller-00013-gd3212c2dbaba #0 [ 22.126623][ T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 22.149668][ T28] audit: type=1400 audit(1694929099.939:70): avc: denied { mount } for pid=294 comm="syz-executor305" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 297] futex(0x7f451665d418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 294] <... futex resumed>) = 0 [ 22.157412][ T295] RIP: 0010:do_renameat2+0x62e/0x1480 [ 22.204418][ T295] Code: 18 09 ad ff 41 89 de 4c 8b 64 24 40 e9 0f 06 00 00 4c 89 b4 24 f0 00 00 00 49 89 de 49 c1 ee 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 06 84 c0 4c 8b 64 24 40 0f 85 2d 08 00 00 48 89 1c 24 [ 22.223856][ T295] RSP: 0018:ffffc90000e37c40 EFLAGS: 00010202 [ 22.229760][ T295] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffff88810967bcc0 [ 22.237567][ T295] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [pid 294] exit_group(0) = ? [pid 297] <... futex resumed>) = ? [pid 297] +++ exited with 0 +++ [ 22.245383][ T295] RBP: ffffc90000e37ef8 R08: ffffffff81ca097b R09: fffff520001c6f67 [ 22.253190][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 22.261001][ T295] R13: ffff88811f496330 R14: 0000000000000002 R15: ffff88810eb34020 [ 22.268821][ T295] FS: 00007f45165966c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.277586][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.284002][ T295] CR2: 00007f4516575d58 CR3: 00000001214d2000 CR4: 00000000003506a0 [ 22.291814][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.299622][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.307507][ T295] Call Trace: [ 22.310563][ T295] [ 22.313346][ T295] ? fsnotify_move+0x4e0/0x4e0 [ 22.317947][ T295] ? strncpy_from_user+0x169/0x2b0 [ 22.322888][ T295] ? getname_flags+0x1fd/0x520 [ 22.327484][ T295] __x64_sys_rename+0x86/0x90 [ 22.332002][ T295] do_syscall_64+0x3d/0xb0 [ 22.336254][ T295] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 22.341977][ T295] RIP: 0033:0x7f45165d42b9 [ 22.346235][ T295] 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 [ 22.365676][ T295] RSP: 002b:00007f4516596218 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [ 22.373918][ T295] RAX: ffffffffffffffda RBX: 00007f451665d408 RCX: 00007f45165d42b9 [ 22.381730][ T295] RDX: 00007f45165d42b9 RSI: 0000000020000140 RDI: 0000000020000100 [ 22.389541][ T295] RBP: 00007f451665d400 R08: 0000000000000000 R09: 0000000000000000 [ 22.397353][ T295] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f451662b018 [ 22.405166][ T295] R13: 0030656c69662f2e R14: 0030656c69662f30 R15: 00007f451662b00e [ 22.412979][ T295] [ 22.415841][ T295] Modules linked in: [ 22.419764][ T295] ---[ end trace 0000000000000000 ]--- [ 22.425027][ T295] RIP: 0010:do_renameat2+0x62e/0x1480 [ 22.430357][ T295] Code: 18 09 ad ff 41 89 de 4c 8b 64 24 40 e9 0f 06 00 00 4c 89 b4 24 f0 00 00 00 49 89 de 49 c1 ee 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 06 84 c0 4c 8b 64 24 40 0f 85 2d 08 00 00 48 89 1c 24 [ 22.449810][ T295] RSP: 0018:ffffc90000e37c40 EFLAGS: 00010202 [ 22.455704][ T295] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffff88810967bcc0 [ 22.463637][ T295] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 22.471521][ T295] RBP: ffffc90000e37ef8 R08: ffffffff81ca097b R09: fffff520001c6f67 [ 22.479260][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 22.487047][ T295] R13: ffff88811f496330 R14: 0000000000000002 R15: ffff88810eb34020 [ 22.494921][ T295] FS: 00007f45165966c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.503659][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.510175][ T295] CR2: 00007f4516575d58 CR3: 00000001214d2000 CR4: 00000000003506a0 [ 22.517960][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.525813][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.533599][ T295] Kernel panic - not syncing: Fatal exception [ 22.539789][ T295] Kernel Offset: disabled [ 22.543915][ T295] Rebooting in 86400 seconds..