./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1052389206 <...> Warning: Permanently added '10.128.0.53' (ED25519) to the list of known hosts. execve("./syz-executor1052389206", ["./syz-executor1052389206"], 0x7ffe66d16050 /* 10 vars */) = 0 brk(NULL) = 0x555555860000 brk(0x555555860d40) = 0x555555860d40 arch_prctl(ARCH_SET_FS, 0x5555558603c0) = 0 set_tid_address(0x555555860690) = 292 set_robust_list(0x5555558606a0, 24) = 0 rseq(0x555555860ce0, 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-executor1052389206", 4096) = 28 getrandom("\x23\x1b\x16\x63\xbc\x39\x09\xdf", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555860d40 brk(0x555555881d40) = 0x555555881d40 brk(0x555555882000) = 0x555555882000 mprotect(0x7f98168f7000, 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(0x7f98168fd3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f98168972a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f9816888920}, 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) = 0x7f9816813000 mprotect(0x7f9816814000, 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=0x7f9816833990, parent_tid=0x7f9816833990, exit_signal=0, stack=0x7f9816813000, stack_size=0x20300, tls=0x7f98168336c0} => {parent_tid=[293]}, 88) = 293 ./strace-static-x86_64: Process 293 attached [pid 292] rt_sigprocmask(SIG_SETMASK, [], [pid 293] set_robust_list(0x7f98168339a0, 24) = 0 [pid 293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 293] futex(0x7f98168fd3e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 292] futex(0x7f98168fd3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 293] <... futex resumed>) = 0 [pid 292] futex(0x7f98168fd3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 293] futex(0x7f98168fd3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 293] futex(0x7f98168fd3e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f98168fd3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 292] futex(0x7f98168fd3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 0 [pid 293] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 293] futex(0x7f98168fd3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 293] futex(0x7f98168fd3e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f98168fd3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 292] futex(0x7f98168fd3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 0 [pid 293] mount(NULL, "./file0", "fuse", 0, "fd=00000000000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=000"...) = 0 [pid 293] futex(0x7f98168fd3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 293] <... futex resumed>) = 1 [pid 292] futex(0x7f98168fd3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f98168fd3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] 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 293] futex(0x7f98168fd3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 293] <... futex resumed>) = 1 [pid 292] futex(0x7f98168fd3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f98168fd3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] write(3, "\x20\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x06\x00\x00\x00", 32) = 32 [pid 293] futex(0x7f98168fd3ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 293] <... futex resumed>) = 1 [pid 292] futex(0x7f98168fd3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f98168fd3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [ 19.735665][ T28] audit: type=1400 audit(1712189595.277:66): avc: denied { execmem } for pid=292 comm="syz-executor105" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 19.740835][ T28] audit: type=1400 audit(1712189595.287:67): avc: denied { read write } for pid=292 comm="syz-executor105" 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 [ 19.746508][ T28] audit: type=1400 audit(1712189595.287:68): avc: denied { open } for pid=292 comm="syz-executor105" 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 [ 19.749880][ T28] audit: type=1400 audit(1712189595.287:69): avc: denied { mounton } for pid=292 comm="syz-executor105" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 19.752904][ T28] audit: type=1400 audit(1712189595.287:70): avc: denied { mount } for pid=292 comm="syz-executor105" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 293] read(3, [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7f98168fd3fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f98167f2000 [pid 292] mprotect(0x7f98167f3000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 292] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 292] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f9816812990, parent_tid=0x7f9816812990, exit_signal=0, stack=0x7f98167f2000, stack_size=0x20300, tls=0x7f98168126c0}./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x7f98168129a0, 24) = 0 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] futex(0x7f98168fd3f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... clone3 resumed> => {parent_tid=[295]}, 88) = 295 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] futex(0x7f98168fd3f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 292] futex(0x7f98168fd3fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 0 [pid 295] rmdir("./file0/../file0/file0" [pid 293] <... 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 293] write(3, "\x90\x00\x00\x00\x00\x00\x00\x00\x04\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"..., 144) = 144 [pid 293] futex(0x7f98168fd3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 293] futex(0x7f98168fd3e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 19.801806][ T295] general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN [ 19.813518][ T295] KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] [ 19.821767][ T295] CPU: 0 PID: 295 Comm: syz-executor105 Not tainted 6.1.75-syzkaller-00112-gaf361f9a1066 #0 [ 19.831655][ T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 19.841552][ T295] RIP: 0010:do_rmdir+0x33f/0x630 [ 19.846320][ T295] Code: ff 4c 89 64 24 50 72 0d e8 1e cf ac ff 45 89 fc e9 99 00 00 00 49 8d 5f 30 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 43 aa f3 ff 48 83 3b 00 74 5d e8 e8 [ 19.865767][ T295] RSP: 0018:ffffc90000e27de0 EFLAGS: 00010202 [ 19.871669][ T295] RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 [ 19.879481][ T295] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 19.887287][ T295] RBP: ffffc90000e27f08 R08: ffffffff81cb158b R09: fffff520001c4f9d [ 19.895098][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811f5348b0 [ 19.902911][ T295] R13: ffffc90000e27e60 R14: 1ffff11023ea6916 R15: 0000000000000008 [ 19.910723][ T295] FS: 00007f98168126c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 19.919511][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.925909][ T295] CR2: 00007f9816812d58 CR3: 0000000121771000 CR4: 00000000003506b0 [ 19.935027][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.943099][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [pid 292] exit_group(0) = ? [pid 293] <... futex resumed>) = ? [pid 293] +++ exited with 0 +++ [ 19.950906][ T295] Call Trace: [ 19.954087][ T295] [ 19.956812][ T295] ? __die_body+0x62/0xb0 [ 19.960974][ T295] ? die_addr+0x9f/0xd0 [ 19.964972][ T295] ? exc_general_protection+0x317/0x4c0 [ 19.970355][ T295] ? asm_exc_general_protection+0x27/0x30 [ 19.975903][ T295] ? dput+0x8b/0x310 [ 19.979636][ T295] ? do_rmdir+0x33f/0x630 [ 19.983802][ T295] ? d_delete_notify+0x160/0x160 [ 19.988575][ T295] ? getname_flags+0x1fd/0x520 [ 19.993175][ T295] __x64_sys_rmdir+0x49/0x50 [ 19.997602][ T295] do_syscall_64+0x3d/0xb0 [ 20.001855][ T295] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 20.007582][ T295] RIP: 0033:0x7f98168713f9 [ 20.011835][ 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 [ 20.031277][ T295] RSP: 002b:00007f9816812218 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 [ 20.039521][ T295] RAX: ffffffffffffffda RBX: 00007f98168fd3f8 RCX: 00007f98168713f9 [ 20.047335][ T295] RDX: 00007f98168713f9 RSI: 0000000000000000 RDI: 0000000020000200 [ 20.055144][ T295] RBP: 00007f98168fd3f0 R08: 0000000000000000 R09: 0000000000000000 [ 20.062957][ T295] R10: 00007ffe2b485437 R11: 0000000000000246 R12: 00007f98168ca01c [ 20.070793][ T295] R13: 00007f98168ca038 R14: 00007ffe2b485350 R15: 0030656c69662f30 [ 20.078585][ T295] [ 20.081441][ T295] Modules linked in: [ 20.086477][ T295] ---[ end trace 0000000000000000 ]--- [ 20.091743][ T295] RIP: 0010:do_rmdir+0x33f/0x630 [ 20.096635][ T295] Code: ff 4c 89 64 24 50 72 0d e8 1e cf ac ff 45 89 fc e9 99 00 00 00 49 8d 5f 30 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 43 aa f3 ff 48 83 3b 00 74 5d e8 e8 [ 20.116111][ T295] RSP: 0018:ffffc90000e27de0 EFLAGS: 00010202 [ 20.121985][ T295] RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 [ 20.129872][ T295] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 20.137770][ T295] RBP: ffffc90000e27f08 R08: ffffffff81cb158b R09: fffff520001c4f9d [ 20.145554][ T295] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811f5348b0 [ 20.153390][ T295] R13: ffffc90000e27e60 R14: 1ffff11023ea6916 R15: 0000000000000008 [ 20.161192][ T295] FS: 00007f98168126c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 20.169958][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.176378][ T295] CR2: 00007f9816812d58 CR3: 0000000121771000 CR4: 00000000003506b0 [ 20.184173][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.192006][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.199810][ T295] Kernel panic - not syncing: Fatal exception [ 20.205986][ T295] Kernel Offset: disabled [ 20.210105][ T295] Rebooting in 86400 seconds..