./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2824462642 <...> Warning: Permanently added '10.128.0.60' (ED25519) to the list of known hosts. execve("./syz-executor2824462642", ["./syz-executor2824462642"], 0x7ffc662fa690 /* 10 vars */) = 0 brk(NULL) = 0x5555572c8000 brk(0x5555572c8d40) = 0x5555572c8d40 arch_prctl(ARCH_SET_FS, 0x5555572c83c0) = 0 set_tid_address(0x5555572c8690) = 295 set_robust_list(0x5555572c86a0, 24) = 0 rseq(0x5555572c8ce0, 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-executor2824462642", 4096) = 28 getrandom("\xd3\x16\xeb\xee\xc5\xe5\x18\xd8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555572c8d40 brk(0x5555572e9d40) = 0x5555572e9d40 brk(0x5555572ea000) = 0x5555572ea000 mprotect(0x7fb73f243000, 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(0x7fb73f2493ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fb73f1e2320, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fb73f1d39a0}, 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) = 0x7fb73f15e000 mprotect(0x7fb73f15f000, 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=0x7fb73f17e990, parent_tid=0x7fb73f17e990, exit_signal=0, stack=0x7fb73f15e000, stack_size=0x20300, tls=0x7fb73f17e6c0} => {parent_tid=[296]}, 88) = 296 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7fb73f2493e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7fb73f2493ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 296 attached [pid 296] set_robust_list(0x7fb73f17e9a0, 24) = 0 [pid 296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 296] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 296] futex(0x7fb73f2493ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fb73f2493e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fb73f2493ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 296] futex(0x7fb73f2493ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fb73f2493e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fb73f2493ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 296] futex(0x7fb73f2493ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fb73f2493e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fb73f2493ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] 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 296] futex(0x7fb73f2493ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fb73f2493e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fb73f2493ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [ 22.118744][ T28] audit: type=1400 audit(1710688247.652:66): avc: denied { execmem } for pid=295 comm="syz-executor282" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.138027][ T28] audit: type=1400 audit(1710688247.652:67): avc: denied { read write } for pid=295 comm="syz-executor282" 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 296] read(3, [pid 295] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 295] futex(0x7fb73f2493fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fb73f13d000 [pid 295] mprotect(0x7fb73f13e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 295] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 295] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fb73f15d990, parent_tid=0x7fb73f15d990, exit_signal=0, stack=0x7fb73f13d000, stack_size=0x20300, tls=0x7fb73f15d6c0} => {parent_tid=[298]}, 88) = 298 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] futex(0x7fb73f2493f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fb73f2493fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 298 attached [pid 298] set_robust_list(0x7fb73f15d9a0, 24) = 0 [pid 298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 298] write(3, "\x28\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00\x9a\x09\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 40) = 40 [pid 298] futex(0x7fb73f2493fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7fb73f2493f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7fb73f2493fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... futex resumed>) = 1 [pid 298] openat(AT_FDCWD, "./file0/file0", O_WRONLY|O_CREAT|O_CLOEXEC, 000 [pid 296] <... 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\x2a\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 296] write(3, "\x90\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"..., 144) = 144 [pid 296] futex(0x7fb73f2493ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 22.161434][ T28] audit: type=1400 audit(1710688247.652:68): avc: denied { open } for pid=295 comm="syz-executor282" 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 [ 22.184686][ T28] audit: type=1400 audit(1710688247.652:69): avc: denied { mounton } for pid=295 comm="syz-executor282" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.191127][ T298] general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN [ 22.207226][ T28] audit: type=1400 audit(1710688247.652:70): avc: denied { mount } for pid=295 comm="syz-executor282" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 22.218686][ T298] KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] [ 22.218701][ T298] CPU: 1 PID: 298 Comm: syz-executor282 Not tainted 6.1.68-syzkaller-00059-gef39f76e4d24 #0 [ 22.218722][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 22.268701][ T298] RIP: 0010:fuse_atomic_open+0x166/0x3a0 [ 22.274168][ T298] Code: 45 fe 8b 5d c4 89 de 83 e6 40 31 ff e8 e3 02 60 ff 89 d8 83 e0 40 75 07 e8 27 ff 5f ff eb 25 49 8d 5f 30 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 ab d2 a6 ff 48 83 3b 00 74 24 e8 [ 22.293611][ T298] RSP: 0018:ffffc90000ed78d8 EFLAGS: 00010202 [ 22.299510][ T298] RAX: 0000000000000007 RBX: 0000000000000038 RCX: ffff8881098b2880 [ 22.307322][ T298] RDX: ffff8881098b2880 RSI: 0000000000000040 RDI: 0000000000000000 [ 22.315135][ T298] RBP: ffffc90000ed7930 R08: ffffffff821571dd R09: fffff520001dae65 [ 22.322944][ T298] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 22.330756][ T298] R13: ffff888112d2fb80 R14: 0000000000000008 R15: 0000000000000008 [ 22.338567][ T298] FS: 00007fb73f15d6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.347336][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.353755][ T298] CR2: 00007fb73f15dd58 CR3: 00000001222f6000 CR4: 00000000003506a0 [ 22.361567][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.369379][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.377190][ T298] Call Trace: [ 22.380316][ T298] [ 22.383096][ T298] ? __die_body+0x62/0xb0 [ 22.387259][ T298] ? die_addr+0x9f/0xd0 [ 22.391252][ T298] ? exc_general_protection+0x317/0x4c0 [ 22.396636][ T298] ? asm_exc_general_protection+0x27/0x30 [ 22.402187][ T298] ? fuse_atomic_open+0x14d/0x3a0 [ 22.407047][ T298] ? fuse_atomic_open+0x166/0x3a0 [ 22.411905][ T298] ? fuse_atomic_open+0x14d/0x3a0 [ 22.416765][ T298] path_openat+0xf52/0x2d60 [ 22.421107][ T298] ? fuse_rename2+0x4ad0/0x4ad0 [ 22.425796][ T298] ? do_filp_open+0x480/0x480 [ 22.430335][ T298] do_filp_open+0x230/0x480 [ 22.434645][ T298] ? vfs_tmpfile+0x480/0x480 [ 22.439077][ T298] ? alloc_fd+0x4fa/0x5a0 [ 22.443242][ T298] do_sys_openat2+0x13f/0x850 [ 22.447750][ T298] ? memset+0x35/0x40 [ 22.451572][ T298] ? do_sys_open+0x220/0x220 [ 22.455999][ T298] ? ptrace_notify+0x249/0x350 [ 22.460596][ T298] __x64_sys_openat+0x243/0x290 [ 22.465282][ T298] ? __ia32_sys_open+0x270/0x270 [ 22.470060][ T298] ? syscall_enter_from_user_mode+0x6a/0x190 [ 22.475871][ T298] do_syscall_64+0x3d/0xb0 [ 22.480126][ T298] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 22.485861][ T298] RIP: 0033:0x7fb73f1bc479 [ 22.490107][ T298] 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 [ 22.509551][ T298] RSP: 002b:00007fb73f15d218 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [pid 296] futex(0x7fb73f2493e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 295] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 22.517794][ T298] RAX: ffffffffffffffda RBX: 00007fb73f2493f8 RCX: 00007fb73f1bc479 [ 22.525621][ T298] RDX: 0000000000080041 RSI: 00000000200001c0 RDI: 00000000ffffff9c [ 22.533414][ T298] RBP: 00007fb73f2493f0 R08: 0000000000000000 R09: 0000000000000000 [ 22.541227][ T298] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb73f216024 [ 22.549037][ T298] R13: 000000000000006e R14: 0030656c69662f30 R15: 2f30656c69662f2e [ 22.556852][ T298] [ 22.559711][ T298] Modules linked in: [ 22.564036][ T298] ---[ end trace 0000000000000000 ]--- [ 22.569558][ T298] RIP: 0010:fuse_atomic_open+0x166/0x3a0 [ 22.575088][ T298] Code: 45 fe 8b 5d c4 89 de 83 e6 40 31 ff e8 e3 02 60 ff 89 d8 83 e0 40 75 07 e8 27 ff 5f ff eb 25 49 8d 5f 30 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 ab d2 a6 ff 48 83 3b 00 74 24 e8 [ 22.594577][ T298] RSP: 0018:ffffc90000ed78d8 EFLAGS: 00010202 [ 22.600563][ T298] RAX: 0000000000000007 RBX: 0000000000000038 RCX: ffff8881098b2880 [ 22.608371][ T298] RDX: ffff8881098b2880 RSI: 0000000000000040 RDI: 0000000000000000 [ 22.616249][ T298] RBP: ffffc90000ed7930 R08: ffffffff821571dd R09: fffff520001dae65 [ 22.624098][ T298] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 22.631844][ T298] R13: ffff888112d2fb80 R14: 0000000000000008 R15: 0000000000000008 [ 22.639637][ T298] FS: 00007fb73f15d6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.648434][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.654805][ T298] CR2: 00007fb73f15dd58 CR3: 00000001222f6000 CR4: 00000000003506a0 [ 22.662644][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.670444][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.678271][ T298] Kernel panic - not syncing: Fatal exception [ 22.684456][ T298] Kernel Offset: disabled [ 22.688584][ T298] Rebooting in 86400 seconds..