./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4020495921 <...> Warning: Permanently added '10.128.0.134' (ED25519) to the list of known hosts. execve("./syz-executor4020495921", ["./syz-executor4020495921"], 0x7ffdf9d83440 /* 10 vars */) = 0 brk(NULL) = 0x555557164000 brk(0x555557164d40) = 0x555557164d40 arch_prctl(ARCH_SET_FS, 0x5555571643c0) = 0 set_tid_address(0x555557164690) = 289 set_robust_list(0x5555571646a0, 24) = 0 rseq(0x555557164ce0, 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-executor4020495921", 4096) = 28 getrandom("\x98\xa6\x37\xd9\x63\x02\xa4\x66", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557164d40 brk(0x555557185d40) = 0x555557185d40 brk(0x555557186000) = 0x555557186000 mprotect(0x7f707c7f5000, 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(0x7f707c7fb6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f707c797b80, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f707c789230}, 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) = 0x7f707c70f000 mprotect(0x7f707c710000, 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=0x7f707c72f990, parent_tid=0x7f707c72f990, exit_signal=0, stack=0x7f707c70f000, stack_size=0x20300, tls=0x7f707c72f6c0} => {parent_tid=[290]}, 88) = 290 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f707c7fb6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f707c7fb6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x7f707c72f9a0, 24) = 0 [pid 290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 290] memfd_create("syzkaller", 0) = 3 [pid 290] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f707430f000 [pid 290] write(3, "\x60\x1c\x6d\x6b\x64\x6f\x73\x66\xe4\x17\x98\x00\x08\x08\x01\x00\x02\x40\x00\x40\x00\xf8\x01\x00\x10\x00\x02\x00\x00\x00\x00\x00\x00\x07\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 131072) = 131072 [pid 290] munmap(0x7f707430f000, 138412032) = 0 [pid 290] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 290] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 290] close(3) = 0 [pid 290] mkdir("./file0", 0777) = 0 [pid 290] mount("/dev/loop0", "./file0", "msdos", 0, "dots,dots,nodots,dots,nodots,dmask=00000000000000000000001,time_offset=0x00000000000000d4,time_offse"...) = -1 EINVAL (Invalid argument) [ 23.587441][ T24] audit: type=1400 audit(1704299505.300:66): avc: denied { execmem } for pid=289 comm="syz-executor402" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.607264][ T24] audit: type=1400 audit(1704299505.300:67): avc: denied { read write } for pid=289 comm="syz-executor402" name="loop0" dev="devtmpfs" ino=111 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 290] ioctl(4, LOOP_CLR_FD) = 0 [pid 290] close(4) = 0 [pid 290] futex(0x7f707c7fb6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f707c7fb6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f707c7fb6cc, 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(0x7f707c7fb6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f707c7fb6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f707c7fb6cc, 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(0x7f707c7fb6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f707c7fb6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f707c7fb6cc, 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(0x7f707c7fb6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f707c7fb6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f707c7fb6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] 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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 290] futex(0x7f707c7fb6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f707c7fb6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f707c7fb6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [ 23.631268][ T24] audit: type=1400 audit(1704299505.300:68): avc: denied { open } for pid=289 comm="syz-executor402" path="/dev/loop0" dev="devtmpfs" ino=111 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 23.656129][ T24] audit: type=1400 audit(1704299505.300:69): avc: denied { ioctl } for pid=289 comm="syz-executor402" path="/dev/loop0" dev="devtmpfs" ino=111 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 290] read(3, [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7f707c7fb6dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f707c6ee000 [pid 289] mprotect(0x7f707c6ef000, 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=0x7f707c70e990, parent_tid=0x7f707c70e990, exit_signal=0, stack=0x7f707c6ee000, stack_size=0x20300, tls=0x7f707c70e6c0} => {parent_tid=[295]}, 88) = 295 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7f707c7fb6d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 23.681760][ T24] audit: type=1400 audit(1704299505.310:70): avc: denied { mounton } for pid=289 comm="syz-executor402" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.704591][ T24] audit: type=1400 audit(1704299505.350:71): avc: denied { read write } for pid=289 comm="syz-executor402" 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 289] futex(0x7f707c7fb6dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x7f707c70e9a0, 24) = 0 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] 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 295] futex(0x7f707c7fb6dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f707c7fb6d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f707c7fb6dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] inotify_init1(0) = 4 [pid 295] futex(0x7f707c7fb6dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f707c7fb6d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f707c7fb6dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [pid 295] inotify_add_watch(4, "./file0/file0", IN_DELETE|IN_EXCL_UNLINK [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\x27\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 290] 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 290] futex(0x7f707c7fb6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 23.729242][ T24] audit: type=1400 audit(1704299505.350:72): avc: denied { open } for pid=289 comm="syz-executor402" 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 [ 23.752656][ T24] audit: type=1400 audit(1704299505.350:73): avc: denied { mount } for pid=289 comm="syz-executor402" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 23.756773][ T295] general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN [ 23.786135][ T295] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 23.794378][ T295] CPU: 0 PID: 295 Comm: syz-executor402 Not tainted 5.10.204-syzkaller-01048-gf7977422e132 #0 [ 23.804444][ T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 23.814359][ T295] RIP: 0010:step_into+0x1b9/0xec0 [ 23.819199][ T295] Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 66 9d f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c1 0a 00 00 8b 1b 89 de 81 e6 00 00 07 [ 23.838740][ T295] RSP: 0018:ffffc90000ba78e0 EFLAGS: 00010206 [ 23.844625][ T295] RAX: 0000000000000003 RBX: 0000000000000018 RCX: ffff88811e5ba780 [ 23.852453][ T295] RDX: ffffc90000ba7c38 RSI: 0000000000000000 RDI: 0000000000000000 [ 23.860274][ T295] RBP: ffffc90000ba7a10 R08: ffffffff81b4752f R09: ffffed10238a2765 [ 23.868201][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000174f33 [ 23.875982][ T295] R13: dffffc0000000000 R14: ffffc90000ba7c00 R15: 0000000000000001 [ 23.883801][ T295] FS: 00007f707c70e6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.893260][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.901727][ T295] CR2: 00007f7dd86ad308 CR3: 000000011e576000 CR4: 00000000003506b0 [ 23.909868][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.918126][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.926351][ T295] Call Trace: [ 23.929602][ T295] ? __die_body+0x62/0xb0 [ 23.933776][ T295] ? die_addr+0x9f/0xd0 [ 23.937940][ T295] ? exc_general_protection+0x3ff/0x490 [ 23.943416][ T295] ? lockref_put_return+0x1b7/0x210 [ 23.948685][ T295] ? asm_exc_general_protection+0x1e/0x30 [ 23.956650][ T295] ? step_into+0x15f/0xec0 [ 23.961036][ T295] ? step_into+0x1b9/0xec0 [ 23.965276][ T295] ? set_root+0x3d0/0x3d0 [ 23.969700][ T295] ? __kasan_check_write+0x14/0x20 [ 23.974752][ T295] ? up_read+0x14/0x90 [ 23.978922][ T295] walk_component+0x359/0x610 [ 23.983413][ T295] ? nd_alloc_stack+0xf0/0xf0 [ 23.988099][ T295] ? handle_lookup_down+0x130/0x130 [ 23.993137][ T295] path_lookupat+0x16d/0x450 [ 23.997549][ T295] filename_lookup+0x26a/0x6f0 [ 24.002153][ T295] ? hashlen_string+0x120/0x120 [ 24.006952][ T295] ? getname_flags+0x1fd/0x520 [ 24.011713][ T295] user_path_at_empty+0x40/0x50 [ 24.016400][ T295] __se_sys_inotify_add_watch+0x1c3/0xba0 [ 24.021983][ T295] ? _raw_spin_unlock_irq+0x4e/0x70 [ 24.026989][ T295] ? ptrace_notify+0x24c/0x350 [ 24.031600][ T295] ? do_notify_parent+0xa10/0xa10 [ 24.036448][ T295] ? __x64_sys_inotify_add_watch+0x90/0x90 [ 24.042112][ T295] ? fpu__clear_all+0x20/0x20 [ 24.046604][ T295] __x64_sys_inotify_add_watch+0x7b/0x90 [ 24.052072][ T295] do_syscall_64+0x34/0x70 [ 24.056322][ T295] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 24.062077][ T295] RIP: 0033:0x7f707c771d29 [ 24.066321][ T295] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 [pid 290] futex(0x7f707c7fb6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 24.085747][ T295] RSP: 002b:00007f707c70e218 EFLAGS: 00000246 ORIG_RAX: 00000000000000fe [ 24.094027][ T295] RAX: ffffffffffffffda RBX: 00007f707c7fb6d8 RCX: 00007f707c771d29 [ 24.101806][ T295] RDX: 0000000004000200 RSI: 0000000020000980 RDI: 0000000000000004 [ 24.109608][ T295] RBP: 00007f707c7fb6d0 R08: 0000000000000000 R09: 0000000000000000 [ 24.117419][ T295] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f707c7c821c [ 24.125228][ T295] R13: 000000000000006e R14: 00007ffc1fcab6f0 R15: 00007ffc1fcab7d8 [ 24.133129][ T295] Modules linked in: [ 24.137866][ T295] ---[ end trace 8a3175219a87ac81 ]--- [ 24.143345][ T295] RIP: 0010:step_into+0x1b9/0xec0 [ 24.148387][ T295] Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 66 9d f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c1 0a 00 00 8b 1b 89 de 81 e6 00 00 07 [ 24.168098][ T295] RSP: 0018:ffffc90000ba78e0 EFLAGS: 00010206 [ 24.174072][ T295] RAX: 0000000000000003 RBX: 0000000000000018 RCX: ffff88811e5ba780 [ 24.181788][ T295] RDX: ffffc90000ba7c38 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.189931][ T295] RBP: ffffc90000ba7a10 R08: ffffffff81b4752f R09: ffffed10238a2765 [ 24.197974][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000174f33 [ 24.205886][ T295] R13: dffffc0000000000 R14: ffffc90000ba7c00 R15: 0000000000000001 [ 24.213779][ T295] FS: 00007f707c70e6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.223289][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.230224][ T295] CR2: 000056369de620f8 CR3: 000000011e576000 CR4: 00000000003506a0 [ 24.239116][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.246878][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.254702][ T295] Kernel panic - not syncing: Fatal exception [ 24.260782][ T295] Kernel Offset: disabled [ 24.264913][ T295] Rebooting in 86400 seconds..