./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor797830157 <...> Warning: Permanently added '10.128.0.23' (ED25519) to the list of known hosts. execve("./syz-executor797830157", ["./syz-executor797830157"], 0x7fff4c3a1750 /* 10 vars */) = 0 brk(NULL) = 0x555569f77000 brk(0x555569f77e00) = 0x555569f77e00 arch_prctl(ARCH_SET_FS, 0x555569f77480) = 0 set_tid_address(0x555569f77750) = 305 set_robust_list(0x555569f77760, 24) = 0 rseq(0x555569f77da0, 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-executor797830157", 4096) = 27 getrandom("\xc9\xf0\xdc\xde\xd1\x59\x45\xd6", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555569f77e00 brk(0x555569f98e00) = 0x555569f98e00 brk(0x555569f99000) = 0x555569f99000 mprotect(0x7f9b82820000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f9b82764b40, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f9b8276d270}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f9b82764b40, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f9b8276d270}, NULL, 8) = 0 write(1, "executing program\n", 18executing program ) = 18 futex(0x7f9b828263ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f9b827c22e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f9b8276d270}, 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) = 0x7f9b8273a000 mprotect(0x7f9b8273b000, 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=0x7f9b8275a990, parent_tid=0x7f9b8275a990, exit_signal=0, stack=0x7f9b8273a000, stack_size=0x20240, tls=0x7f9b8275a6c0} => {parent_tid=[306]}, 88) = 306 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f9b828263e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f9b828263ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 306 attached [pid 306] set_robust_list(0x7f9b8275a9a0, 24) = 0 [pid 306] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 306] mkdir("./file0", 0777) = 0 [pid 306] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 306] futex(0x7f9b828263ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... futex resumed>) = 0 [pid 305] futex(0x7f9b828263e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] futex(0x7f9b828263ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... futex resumed>) = 1 [pid 306] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 306] futex(0x7f9b828263ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... futex resumed>) = 0 [pid 305] futex(0x7f9b828263e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] futex(0x7f9b828263ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... futex resumed>) = 1 [pid 306] mount(NULL, "./file0", "fuse", 0, "fd=00000000000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=000"...) = 0 [pid 306] futex(0x7f9b828263ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... futex resumed>) = 0 [pid 305] futex(0x7f9b828263e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] futex(0x7f9b828263ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... futex resumed>) = 1 [pid 306] 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 306] futex(0x7f9b828263ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... futex resumed>) = 0 [pid 305] futex(0x7f9b828263e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] futex(0x7f9b828263ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... futex resumed>) = 1 [pid 306] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x28\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 306] futex(0x7f9b828263ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... futex resumed>) = 0 [pid 305] futex(0x7f9b828263e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] futex(0x7f9b828263ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... futex resumed>) = 1 [ 39.044290][ T24] audit: type=1400 audit(1727324628.440:66): avc: denied { execmem } for pid=305 comm="syz-executor797" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 39.064112][ T24] audit: type=1400 audit(1727324628.460:67): avc: denied { read write } for pid=305 comm="syz-executor797" 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 306] read(3, [pid 305] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 305] futex(0x7f9b828263fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f9b82719000 [pid 305] mprotect(0x7f9b8271a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 305] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 305] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f9b82739990, parent_tid=0x7f9b82739990, exit_signal=0, stack=0x7f9b82719000, stack_size=0x20240, tls=0x7f9b827396c0} => {parent_tid=[308]}, 88) = 308 [pid 305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 305] futex(0x7f9b828263f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] futex(0x7f9b828263fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 308 attached [pid 308] set_robust_list(0x7f9b827399a0, 24) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 308] rmdir("./file0/../file0/file0" [pid 306] <... 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\x34\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 306] write(3, "\x96\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\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfe\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\x00\x00\x00\x00"..., 150) = 150 [ 39.087532][ T24] audit: type=1400 audit(1727324628.460:68): avc: denied { open } for pid=305 comm="syz-executor797" 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 [ 39.110743][ T24] audit: type=1400 audit(1727324628.460:69): avc: denied { mounton } for pid=305 comm="syz-executor797" 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 306] futex(0x7f9b828263ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 39.133198][ T24] audit: type=1400 audit(1727324628.460:70): avc: denied { mount } for pid=305 comm="syz-executor797" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 39.135910][ T308] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN [ 39.166567][ T308] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 39.174810][ T308] CPU: 0 PID: 308 Comm: syz-executor797 Not tainted 5.10.225-syzkaller-00513-g8d23314f588a #0 [ 39.184873][ T308] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 39.194788][ T308] RIP: 0010:do_rmdir+0x28e/0x5c0 [ 39.199549][ T308] Code: e8 87 94 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 54 2e f4 ff 48 83 3b 00 74 32 e8 49 [ 39.218985][ T308] RSP: 0018:ffffc90000b27de0 EFLAGS: 00010207 [ 39.224882][ T308] RAX: 0000000000000006 RBX: 0000000000000036 RCX: dffffc0000000000 [ 39.232699][ T308] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 39.240515][ T308] RBP: ffffc90000b27f18 R08: ffffffff81b68a38 R09: ffffed1023a61e2e [ 39.248318][ T308] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000006 [ 39.256130][ T308] R13: ffff88811d30f140 R14: 1ffff11023a61e28 R15: ffffc90000b27e01 [ 39.263947][ T308] FS: 00007f9b827396c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 39.272836][ T308] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.279253][ T308] CR2: 00005583b68c1118 CR3: 000000011a042000 CR4: 00000000003506b0 [ 39.287078][ T308] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.294883][ T308] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.302692][ T308] Call Trace: [ 39.305821][ T308] ? __die_body+0x62/0xb0 [ 39.310163][ T308] ? die_addr+0x9f/0xd0 [ 39.314143][ T308] ? exc_general_protection+0x3ff/0x490 [ 39.319544][ T308] ? asm_exc_general_protection+0x1e/0x30 [ 39.325078][ T308] ? fast_dput+0x78/0x2a0 [ 39.329242][ T308] ? do_rmdir+0x28e/0x5c0 [ 39.333413][ T308] ? d_delete_notify+0xd0/0xd0 [ 39.338011][ T308] ? strncpy_from_user+0x18e/0x2d0 [ 39.342957][ T308] ? getname_flags+0x1fd/0x520 [ 39.347586][ T308] __x64_sys_rmdir+0x49/0x50 [ 39.352002][ T308] do_syscall_64+0x34/0x70 [ 39.356243][ T308] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 39.361967][ T308] RIP: 0033:0x7f9b8279c6a9 [ 39.366216][ T308] 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 [ 39.385669][ T308] RSP: 002b:00007f9b82739168 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 [pid 306] futex(0x7f9b828263e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 305] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 39.393906][ T308] RAX: ffffffffffffffda RBX: 00007f9b828263f8 RCX: 00007f9b8279c6a9 [ 39.401718][ T308] RDX: 00007f9b82776fa6 RSI: 6b6d43be9854b1aa RDI: 0000000020000200 [ 39.409524][ T308] RBP: 00007f9b828263f0 R08: 00007ffc94e4f137 R09: 00007f9b828263f8 [ 39.417333][ T308] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9b828263fc [ 39.425145][ T308] R13: 000000000000006e R14: 00007ffc94e4f050 R15: 00007ffc94e4f138 [ 39.432956][ T308] Modules linked in: [ 39.437295][ T308] ---[ end trace b07fac7764642bd3 ]--- [ 39.442592][ T308] RIP: 0010:do_rmdir+0x28e/0x5c0 [ 39.447462][ T308] Code: e8 87 94 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 54 2e f4 ff 48 83 3b 00 74 32 e8 49 [ 39.466816][ T308] RSP: 0018:ffffc90000b27de0 EFLAGS: 00010207 [ 39.472674][ T308] RAX: 0000000000000006 RBX: 0000000000000036 RCX: dffffc0000000000 [ 39.480508][ T308] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 39.488307][ T308] RBP: ffffc90000b27f18 R08: ffffffff81b68a38 R09: ffffed1023a61e2e [ 39.496103][ T308] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000006 [ 39.503960][ T308] R13: ffff88811d30f140 R14: 1ffff11023a61e28 R15: ffffc90000b27e01 [ 39.511764][ T308] FS: 00007f9b827396c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 39.520515][ T308] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.526939][ T308] CR2: 00005583b68c1118 CR3: 000000011a042000 CR4: 00000000003506b0 [ 39.534993][ T308] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [pid 305] exit_group(0) = ? [pid 306] <... futex resumed>) = ? [pid 306] +++ exited with 0 +++ [ 39.542827][ T308] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.550626][ T308] Kernel panic - not syncing: Fatal exception [ 39.556693][ T308] Kernel Offset: disabled [ 39.560812][ T308] Rebooting in 86400 seconds..