./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1351525146 <...> Warning: Permanently added '10.128.0.33' (ED25519) to the list of known hosts. execve("./syz-executor1351525146", ["./syz-executor1351525146"], 0x7ffc79eefe00 /* 10 vars */) = 0 brk(NULL) = 0x55555702c000 brk(0x55555702cd40) = 0x55555702cd40 arch_prctl(ARCH_SET_FS, 0x55555702c3c0) = 0 set_tid_address(0x55555702c690) = 289 set_robust_list(0x55555702c6a0, 24) = 0 rseq(0x55555702cce0, 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-executor1351525146", 4096) = 28 getrandom("\xbd\xc5\x25\x87\x47\x0e\x20\xa0", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555702cd40 brk(0x55555704dd40) = 0x55555704dd40 brk(0x55555704e000) = 0x55555704e000 mprotect(0x7f753896b000, 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(0x7f75389713ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f753890b2a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f75388fc920}, 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) = 0x7f7538887000 mprotect(0x7f7538888000, 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=0x7f75388a7990, parent_tid=0x7f75388a7990, exit_signal=0, stack=0x7f7538887000, stack_size=0x20300, tls=0x7f75388a76c0} => {parent_tid=[290]}, 88) = 290 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f75389713e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f75389713ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x7f75388a79a0, 24) = 0 [pid 290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 290] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 290] futex(0x7f75389713ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f75389713e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f75389713ec, 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(0x7f75389713ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f75389713e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f75389713ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] mount(NULL, "./file0", "fuse", 0, "fd=00000000000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=000"...) = 0 [pid 290] futex(0x7f75389713ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f75389713e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f75389713ec, 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(0x7f75389713ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f75389713e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f75389713ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] 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 290] futex(0x7f75389713ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f75389713e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f75389713ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [ 22.980381][ T24] audit: type=1400 audit(1712186717.460:66): avc: denied { execmem } for pid=289 comm="syz-executor135" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.999600][ T24] audit: type=1400 audit(1712186717.470:67): avc: denied { read write } for pid=289 comm="syz-executor135" 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 290] read(3, [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7f75389713fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f7538866000 [pid 289] mprotect(0x7f7538867000, 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=0x7f7538886990, parent_tid=0x7f7538886990, exit_signal=0, stack=0x7f7538866000, stack_size=0x20300, tls=0x7f75388866c0} => {parent_tid=[292]}, 88) = 292 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7f75389713f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f75389713fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 292 attached [pid 292] set_robust_list(0x7f75388869a0, 24) = 0 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] rmdir("./file0/../file0/file0" [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\x24\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 290] 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 290] futex(0x7f75389713ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 23.022945][ T24] audit: type=1400 audit(1712186717.470:68): avc: denied { open } for pid=289 comm="syz-executor135" 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 [ 23.044300][ T292] general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN [ 23.046274][ T24] audit: type=1400 audit(1712186717.470:69): avc: denied { mounton } for pid=289 comm="syz-executor135" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.057617][ T292] KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] [ 23.057627][ T292] CPU: 0 PID: 292 Comm: syz-executor135 Not tainted 5.10.209-syzkaller-00001-ge7daca75b4c3 #0 [ 23.057632][ T292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 23.057655][ T292] RIP: 0010:do_rmdir+0x28e/0x5c0 [ 23.057663][ T292] Code: e8 47 bb b6 ff 45 89 e5 48 bb 00 00 00 00 00 fc ff df eb 7c 49 8d 5c 24 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 14 34 f4 ff 48 83 3b 00 74 32 e8 09 [ 23.057675][ T292] RSP: 0018:ffffc90000b07de0 EFLAGS: 00010202 [ 23.080420][ T24] audit: type=1400 audit(1712186717.470:70): avc: denied { mount } for pid=289 comm="syz-executor135" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 23.088337][ T292] [ 23.088345][ T292] RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 [ 23.088351][ T292] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 23.088364][ T292] RBP: ffffc90000b07f18 R08: ffffffff81b65c1b R09: ffffed102398d22e [ 23.185897][ T292] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000008 [ 23.193704][ T292] R13: ffff88811cc69140 R14: 1ffff1102398d228 R15: ffffc90000b07e01 [ 23.201515][ T292] FS: 00007f75388866c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.210282][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.216703][ T292] CR2: 00007f470da78308 CR3: 000000011de50000 CR4: 00000000003506b0 [ 23.224517][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.232327][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.240136][ T292] Call Trace: [ 23.243271][ T292] ? __die_body+0x62/0xb0 [ 23.247433][ T292] ? die_addr+0x9f/0xd0 [ 23.251424][ T292] ? exc_general_protection+0x3ff/0x490 [ 23.256807][ T292] ? asm_exc_general_protection+0x1e/0x30 [ 23.262386][ T292] ? dput+0x8b/0x310 [ 23.266095][ T292] ? do_rmdir+0x28e/0x5c0 [ 23.270257][ T292] ? d_delete_notify+0xd0/0xd0 [ 23.274858][ T292] ? strncpy_from_user+0x18e/0x2d0 [ 23.279808][ T292] ? getname_flags+0x1fd/0x520 [ 23.284410][ T292] __x64_sys_rmdir+0x49/0x50 [ 23.288837][ T292] do_syscall_64+0x34/0x70 [ 23.293085][ T292] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 23.298814][ T292] RIP: 0033:0x7f75388e53f9 [ 23.303067][ T292] 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 [ 23.322508][ T292] RSP: 002b:00007f7538886218 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 [pid 290] futex(0x7f75389713e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 23.330754][ T292] RAX: ffffffffffffffda RBX: 00007f75389713f8 RCX: 00007f75388e53f9 [ 23.338563][ T292] RDX: 00007f75388c2b86 RSI: 0000000000000000 RDI: 0000000020000200 [ 23.346378][ T292] RBP: 00007f75389713f0 R08: 00007ffd88ede537 R09: 0000000000000000 [ 23.354186][ T292] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f753893e01c [ 23.361997][ T292] R13: 00007f753893e038 R14: 00007ffd88ede450 R15: 0030656c69662f30 [ 23.369808][ T292] Modules linked in: [ 23.374357][ T292] ---[ end trace 1581c32ec6c647ed ]--- [ 23.379893][ T292] RIP: 0010:do_rmdir+0x28e/0x5c0 [ 23.384688][ T292] Code: e8 47 bb b6 ff 45 89 e5 48 bb 00 00 00 00 00 fc ff df eb 7c 49 8d 5c 24 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 14 34 f4 ff 48 83 3b 00 74 32 e8 09 [ 23.404178][ T292] RSP: 0018:ffffc90000b07de0 EFLAGS: 00010202 [ 23.410085][ T292] RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 [ 23.417874][ T292] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 23.425685][ T292] RBP: ffffc90000b07f18 R08: ffffffff81b65c1b R09: ffffed102398d22e [ 23.433456][ T292] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000008 [ 23.441307][ T292] R13: ffff88811cc69140 R14: 1ffff1102398d228 R15: ffffc90000b07e01 [ 23.449080][ T292] FS: 00007f75388866c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 23.457890][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.464213][ T292] CR2: 00000000005f6b40 CR3: 000000011de50000 CR4: 00000000003506a0 [ 23.472080][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.479904][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.487724][ T292] Kernel panic - not syncing: Fatal exception [ 23.493770][ T292] Kernel Offset: disabled [ 23.497894][ T292] Rebooting in 86400 seconds..