./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2877090095 <...> Warning: Permanently added '10.128.1.66' (ED25519) to the list of known hosts. execve("./syz-executor2877090095", ["./syz-executor2877090095"], 0x7ffc91bc5fb0 /* 10 vars */) = 0 brk(NULL) = 0x555556c95000 brk(0x555556c95d40) = 0x555556c95d40 arch_prctl(ARCH_SET_FS, 0x555556c953c0) = 0 set_tid_address(0x555556c95690) = 297 set_robust_list(0x555556c956a0, 24) = 0 rseq(0x555556c95ce0, 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-executor2877090095", 4096) = 28 getrandom("\xac\xbb\x6c\xfe\x9b\x4d\x6b\x2c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556c95d40 brk(0x555556cb6d40) = 0x555556cb6d40 brk(0x555556cb7000) = 0x555556cb7000 mprotect(0x7f851034d000, 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(0x7f851035340c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f85102ec3a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f85102dda20}, 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) = 0x7f8510268000 mprotect(0x7f8510269000, 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=0x7f8510288990, parent_tid=0x7f8510288990, exit_signal=0, stack=0x7f8510268000, stack_size=0x20300, tls=0x7f85102886c0} => {parent_tid=[298]}, 88) = 298 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f8510353408, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f851035340c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 298 attached [pid 298] set_robust_list(0x7f85102889a0, 24) = 0 [pid 298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 298] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 298] futex(0x7f851035340c, FUTEX_WAKE_PRIVATE, 1000000 [pid 297] <... futex resumed>) = 0 [pid 297] futex(0x7f8510353408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 297] futex(0x7f851035340c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... futex resumed>) = 1 [pid 298] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 298] futex(0x7f851035340c, FUTEX_WAKE_PRIVATE, 1000000 [pid 297] <... futex resumed>) = 0 [pid 297] futex(0x7f8510353408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 297] futex(0x7f851035340c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... futex resumed>) = 1 [pid 298] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 298] futex(0x7f851035340c, FUTEX_WAKE_PRIVATE, 1000000 [pid 297] <... futex resumed>) = 0 [pid 297] futex(0x7f8510353408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 297] futex(0x7f851035340c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... futex resumed>) = 1 [pid 298] 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 298] futex(0x7f851035340c, FUTEX_WAKE_PRIVATE, 1000000 [pid 297] <... futex resumed>) = 0 [pid 297] futex(0x7f8510353408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 297] futex(0x7f851035340c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... futex resumed>) = 1 [ 22.428752][ T28] audit: type=1400 audit(1694669064.755:66): avc: denied { execmem } for pid=297 comm="syz-executor287" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.448034][ T28] audit: type=1400 audit(1694669064.765:67): avc: denied { read write } for pid=297 comm="syz-executor287" 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 298] openat(AT_FDCWD, "./file0/file0", O_RDONLY [pid 297] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 297] futex(0x7f851035340c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 297] futex(0x7f851035341c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 297] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8510247000 [pid 297] mprotect(0x7f8510248000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 297] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 297] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8510267990, parent_tid=0x7f8510267990, exit_signal=0, stack=0x7f8510247000, stack_size=0x20300, tls=0x7f85102676c0} => {parent_tid=[300]}, 88) = 300 [pid 297] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 297] futex(0x7f8510353418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 297] futex(0x7f851035341c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 300 attached [pid 300] set_robust_list(0x7f85102679a0, 24) = 0 [pid 300] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 300] 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 300] futex(0x7f851035341c, FUTEX_WAKE_PRIVATE, 1000000 [pid 297] <... futex resumed>) = 0 [pid 297] futex(0x7f8510353418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 297] futex(0x7f851035341c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 300] <... futex resumed>) = 1 [pid 300] 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\x2a\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [ 22.471344][ T28] audit: type=1400 audit(1694669064.765:68): avc: denied { open } for pid=297 comm="syz-executor287" 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 [ 22.493278][ T298] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 22.495016][ T28] audit: type=1400 audit(1694669064.765:69): avc: denied { mounton } for pid=297 comm="syz-executor287" 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 300] 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 300] futex(0x7f851035341c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 300] futex(0x7f8510353418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 297] <... futex resumed>) = 0 [ 22.506031][ T298] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 22.506044][ T298] CPU: 1 PID: 298 Comm: syz-executor287 Not tainted 6.1.25-syzkaller-00006-gc2ac612610e0 #0 [ 22.506061][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 22.528672][ T28] audit: type=1400 audit(1694669064.765:70): avc: denied { mount } for pid=297 comm="syz-executor287" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 22.537365][ T298] RIP: 0010:path_openat+0x133f/0x2d60 [ 22.537393][ T298] Code: ff ff 48 8b 3c 24 e8 80 e2 02 00 48 63 db 4c 8b 74 24 08 eb 5f e8 51 b5 ad ff 4c 8b 74 24 08 48 8b 1c 24 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 1c 0b 00 00 48 89 1c 24 8b 1b be 00 00 [ 22.603678][ T298] RSP: 0018:ffffc90000e67940 EFLAGS: 00010202 [ 22.609574][ T298] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff888109592880 [ 22.617391][ T298] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [pid 297] exit_group(0) = ? [pid 300] <... futex resumed>) = ? [pid 300] +++ exited with 0 +++ [ 22.625200][ T298] RBP: ffffc90000e67b30 R08: ffffffff81ca0cab R09: fffff520001ccf0f [ 22.633011][ T298] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 22.640823][ T298] R13: dffffc0000000000 R14: ffffc90000e67b88 R15: ffffc90000e67da0 [ 22.648635][ T298] FS: 00007f85102886c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.657401][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.663825][ T298] CR2: 0000000020001000 CR3: 00000001200b6000 CR4: 00000000003506a0 [ 22.671636][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.679452][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.687345][ T298] Call Trace: [ 22.690470][ T298] [ 22.693245][ T298] ? fuse_rename2+0x4ad0/0x4ad0 [ 22.697933][ T298] ? do_filp_open+0x480/0x480 [ 22.702445][ T298] do_filp_open+0x230/0x480 [ 22.706787][ T298] ? vfs_tmpfile+0x480/0x480 [ 22.711216][ T298] ? alloc_fd+0x4fa/0x5a0 [ 22.715378][ T298] do_sys_openat2+0x13f/0x850 [ 22.719890][ T298] ? memset+0x35/0x40 [ 22.723710][ T298] ? do_sys_open+0x220/0x220 [ 22.728136][ T298] ? ptrace_notify+0x249/0x350 [ 22.732736][ T298] __x64_sys_openat+0x243/0x290 [ 22.737424][ T298] ? __ia32_sys_open+0x270/0x270 [ 22.742197][ T298] ? exit_to_user_mode_prepare+0x39/0xa0 [ 22.747686][ T298] ? syscall_enter_from_user_mode+0x6a/0x190 [ 22.753921][ T298] do_syscall_64+0x3d/0xb0 [ 22.758168][ T298] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 22.763984][ T298] RIP: 0033:0x7f85102c64f9 [ 22.768507][ 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 [ 22.787948][ T298] RSP: 002b:00007f8510288218 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 22.796270][ T298] RAX: ffffffffffffffda RBX: 00007f8510353408 RCX: 00007f85102c64f9 [ 22.804079][ T298] RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c [ 22.811894][ T298] RBP: 00007f8510353400 R08: 0000000000000000 R09: 0000000000000000 [ 22.819703][ T298] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8510320024 [ 22.827514][ T298] R13: 00007f8510320040 R14: 00007f851031e016 R15: 2f30656c69662f2e [ 22.835328][ T298] [ 22.838191][ T298] Modules linked in: [ 22.842070][ T298] ---[ end trace 0000000000000000 ]--- [ 22.847432][ T298] RIP: 0010:path_openat+0x133f/0x2d60 [ 22.852528][ T298] Code: ff ff 48 8b 3c 24 e8 80 e2 02 00 48 63 db 4c 8b 74 24 08 eb 5f e8 51 b5 ad ff 4c 8b 74 24 08 48 8b 1c 24 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 1c 0b 00 00 48 89 1c 24 8b 1b be 00 00 [ 22.872029][ T298] RSP: 0018:ffffc90000e67940 EFLAGS: 00010202 [ 22.877951][ T298] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff888109592880 [ 22.885738][ T298] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 22.893501][ T298] RBP: ffffc90000e67b30 R08: ffffffff81ca0cab R09: fffff520001ccf0f [ 22.901530][ T298] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 22.909319][ T298] R13: dffffc0000000000 R14: ffffc90000e67b88 R15: ffffc90000e67da0 [ 22.917125][ T298] FS: 00007f85102886c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.925891][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.932293][ T298] CR2: 0000000020001000 CR3: 00000001200b6000 CR4: 00000000003506a0 [ 22.940147][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.948028][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.955879][ T298] Kernel panic - not syncing: Fatal exception [ 22.961921][ T298] Kernel Offset: disabled [ 22.966040][ T298] Rebooting in 86400 seconds..