./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1514855533 <...> Warning: Permanently added '10.128.1.112' (ED25519) to the list of known hosts. execve("./syz-executor1514855533", ["./syz-executor1514855533"], 0x7ffc11bce220 /* 10 vars */) = 0 brk(NULL) = 0x555557129000 brk(0x555557129d40) = 0x555557129d40 arch_prctl(ARCH_SET_FS, 0x5555571293c0) = 0 set_tid_address(0x555557129690) = 294 set_robust_list(0x5555571296a0, 24) = 0 rseq(0x555557129ce0, 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-executor1514855533", 4096) = 28 getrandom("\xf0\xc1\x04\xa5\xae\xaa\x6f\x62", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557129d40 brk(0x55555714ad40) = 0x55555714ad40 brk(0x55555714b000) = 0x55555714b000 mprotect(0x7f0da8455000, 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(0x7f0da845b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f0da83f43a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f0da83e5a20}, 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) = 0x7f0da8370000 mprotect(0x7f0da8371000, 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=0x7f0da8390990, parent_tid=0x7f0da8390990, exit_signal=0, stack=0x7f0da8370000, stack_size=0x20300, tls=0x7f0da83906c0} => {parent_tid=[295]}, 88) = 295 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f0da845b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f0da845b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x7f0da83909a0, 24) = 0 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 295] futex(0x7f0da845b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f0da845b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f0da845b40c, 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(0x7f0da845b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f0da845b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f0da845b40c, 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=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 295] futex(0x7f0da845b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f0da845b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f0da845b40c, 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\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 295] futex(0x7f0da845b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f0da845b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f0da845b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [ 23.048857][ T30] audit: type=1400 audit(1695583560.440:66): avc: denied { execmem } for pid=294 comm="syz-executor151" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.068162][ T30] audit: type=1400 audit(1695583560.440:67): avc: denied { read write } for pid=294 comm="syz-executor151" 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 295] openat(AT_FDCWD, "./file0/file0", O_RDONLY [pid 294] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 294] futex(0x7f0da845b41c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f0da834f000 [pid 294] mprotect(0x7f0da8350000, 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=0x7f0da836f990, parent_tid=0x7f0da836f990, exit_signal=0, stack=0x7f0da834f000, stack_size=0x20300, tls=0x7f0da836f6c0} => {parent_tid=[297]}, 88) = 297 [pid 294] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 294] futex(0x7f0da845b418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f0da845b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 297 attached [pid 297] set_robust_list(0x7f0da836f9a0, 24) = 0 [pid 297] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 297] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 297] futex(0x7f0da845b41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f0da845b418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f0da845b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 297] <... futex resumed>) = 1 [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", 8192) = 46 [ 23.092078][ T30] audit: type=1400 audit(1695583560.440:68): avc: denied { open } for pid=294 comm="syz-executor151" 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 [ 23.115504][ T30] audit: type=1400 audit(1695583560.440:69): avc: denied { mounton } for pid=294 comm="syz-executor151" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.121553][ T295] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 23.138397][ T30] audit: type=1400 audit(1695583560.440:70): avc: denied { mount } for pid=294 comm="syz-executor151" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 23.149610][ T295] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 23.149626][ T295] CPU: 0 PID: 295 Comm: syz-executor151 Not tainted 5.15.131-syzkaller-00653-gea586874d2f9 #0 [ 23.149647][ T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 23.149658][ T295] RIP: 0010:path_openat+0x185b/0x2f40 [ 23.204906][ T295] Code: b6 04 28 84 c0 0f 85 ef 07 00 00 48 8b 44 24 28 80 60 01 f8 e9 cc ed ff ff e8 b1 e6 b2 ff 48 8b 5c 24 10 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 a6 07 00 00 49 89 de 8b 1b be 00 00 70 [ 23.224342][ T295] RSP: 0018:ffffc90000957900 EFLAGS: 00010202 [ 23.230530][ T295] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88811e830000 [ 23.238350][ T295] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [pid 297] write(3, "\x90\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\xff\xff\xff\xff\x01\x00\x00\x80\x09\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x01\x04\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00"..., 144) = 144 [pid 297] futex(0x7f0da845b41c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 297] futex(0x7f0da845b418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 294] <... futex resumed>) = 0 [pid 294] exit_group(0) = ? [pid 297] <... futex resumed>) = ? [ 23.246169][ T295] RBP: ffffc90000957b50 R08: ffffffff81bff470 R09: ffffed1023893f82 [ 23.253972][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000957ba0 [ 23.261784][ T295] R13: dffffc0000000000 R14: 0000000000000008 R15: ffffc90000957da0 [ 23.269607][ T295] FS: 00007f0da83906c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.278365][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.284784][ T295] CR2: 0000000020001000 CR3: 000000011e1e8000 CR4: 00000000003506b0 [pid 297] +++ exited with 0 +++ [ 23.292601][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.300409][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.308222][ T295] Call Trace: [ 23.311347][ T295] [ 23.314126][ T295] ? __die_body+0x62/0xb0 [ 23.318287][ T295] ? die_addr+0x9f/0xd0 [ 23.322280][ T295] ? exc_general_protection+0x311/0x4b0 [ 23.327668][ T295] ? asm_exc_general_protection+0x27/0x30 [ 23.333217][ T295] ? dput+0x90/0x320 [ 23.336957][ T295] ? path_openat+0x185b/0x2f40 [ 23.341553][ T295] ? do_filp_open+0x460/0x460 [ 23.346066][ T295] do_filp_open+0x21c/0x460 [ 23.350403][ T295] ? vfs_tmpfile+0x2c0/0x2c0 [ 23.354836][ T295] do_sys_openat2+0x13f/0x830 [ 23.359344][ T295] ? cgroup_leave_frozen+0x164/0x2c0 [ 23.364462][ T295] ? do_sys_open+0x220/0x220 [ 23.368890][ T295] ? ptrace_notify+0x24c/0x350 [ 23.373490][ T295] __x64_sys_openat+0x243/0x290 [ 23.378203][ T295] ? __ia32_sys_open+0x270/0x270 [ 23.382955][ T295] ? syscall_enter_from_user_mode+0x70/0x1b0 [ 23.388765][ T295] do_syscall_64+0x3d/0xb0 [ 23.393020][ T295] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.398744][ T295] RIP: 0033:0x7f0da83ce4f9 [ 23.403003][ 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 [ 23.422619][ T295] RSP: 002b:00007f0da8390218 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 23.430857][ T295] RAX: ffffffffffffffda RBX: 00007f0da845b408 RCX: 00007f0da83ce4f9 [ 23.438664][ T295] RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c [ 23.446475][ T295] RBP: 00007f0da845b400 R08: 0000000000000000 R09: 0000000000000000 [ 23.454289][ T295] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0da8428024 [ 23.462097][ T295] R13: 00007f0da8428040 R14: 00007f0da8426016 R15: 2f30656c69662f2e [ 23.469923][ T295] [ 23.472774][ T295] Modules linked in: [ 23.477171][ T295] ---[ end trace c9c82964a3066dc3 ]--- [ 23.482440][ T295] RIP: 0010:path_openat+0x185b/0x2f40 [ 23.487940][ T295] Code: b6 04 28 84 c0 0f 85 ef 07 00 00 48 8b 44 24 28 80 60 01 f8 e9 cc ed ff ff e8 b1 e6 b2 ff 48 8b 5c 24 10 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 a6 07 00 00 49 89 de 8b 1b be 00 00 70 [ 23.507320][ T295] RSP: 0018:ffffc90000957900 EFLAGS: 00010202 [ 23.513224][ T295] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88811e830000 [ 23.521013][ T295] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 23.528853][ T295] RBP: ffffc90000957b50 R08: ffffffff81bff470 R09: ffffed1023893f82 [ 23.536655][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000957ba0 [ 23.544470][ T295] R13: dffffc0000000000 R14: 0000000000000008 R15: ffffc90000957da0 [ 23.552258][ T295] FS: 00007f0da83906c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.561052][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.567459][ T295] CR2: 0000000020001000 CR3: 000000011e1e8000 CR4: 00000000003506b0 [ 23.575289][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.583086][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.590889][ T295] Kernel panic - not syncing: Fatal exception [ 23.597032][ T295] Kernel Offset: disabled [ 23.601169][ T295] Rebooting in 86400 seconds..