./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3635558620 <...> Warning: Permanently added '10.128.1.73' (ED25519) to the list of known hosts. execve("./syz-executor3635558620", ["./syz-executor3635558620"], 0x7ffd932b8440 /* 10 vars */) = 0 brk(NULL) = 0x555570330000 brk(0x555570330d40) = 0x555570330d40 arch_prctl(ARCH_SET_FS, 0x5555703303c0) = 0 set_tid_address(0x555570330690) = 290 set_robust_list(0x5555703306a0, 24) = 0 rseq(0x555570330ce0, 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-executor3635558620", 4096) = 28 getrandom("\x38\xfa\x9f\xff\xea\x5d\xe6\x84", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555570330d40 brk(0x555570351d40) = 0x555570351d40 brk(0x555570352000) = 0x555570352000 mprotect(0x7ff8c24f4000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0executing program ) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 write(1, "executing program\n", 18) = 18 futex(0x7ff8c24fa40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7ff8c2493420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff8c2484aa0}, 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) = 0x7ff8c240f000 mprotect(0x7ff8c2410000, 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=0x7ff8c242f990, parent_tid=0x7ff8c242f990, exit_signal=0, stack=0x7ff8c240f000, stack_size=0x20300, tls=0x7ff8c242f6c0} => {parent_tid=[291]}, 88) = 291 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7ff8c24fa408, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7ff8c24fa40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 291 attached [pid 291] set_robust_list(0x7ff8c242f9a0, 24) = 0 [pid 291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 291] seccomp(SECCOMP_SET_MODE_FILTER, 0, {len=1, filter=0x200000000380}) = 0 [pid 291] futex(0x7ff8c24fa40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 290] <... futex resumed>) = 0 [pid 290] futex(0x7ff8c24fa408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7ff8c24fa40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] mkdir("./file0", 000) = 0 [pid 291] futex(0x7ff8c24fa40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 290] <... futex resumed>) = 0 [pid 290] futex(0x7ff8c24fa408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7ff8c24fa40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 291] futex(0x7ff8c24fa40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 290] <... futex resumed>) = 0 [pid 290] futex(0x7ff8c24fa408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7ff8c24fa40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=0x0000000000000000,group_id=0000000000"...) = 0 [pid 291] futex(0x7ff8c24fa40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 290] <... futex resumed>) = 0 [pid 290] futex(0x7ff8c24fa408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7ff8c24fa40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] 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\x26\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x73\x09\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 291] futex(0x7ff8c24fa40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 290] <... futex resumed>) = 0 [pid 290] futex(0x7ff8c24fa408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7ff8c24fa40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x2b\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 291] futex(0x7ff8c24fa40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 290] <... futex resumed>) = 0 [pid 290] futex(0x7ff8c24fa408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7ff8c24fa40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [ 26.349266][ T28] audit: type=1400 audit(1753598624.170:64): avc: denied { execmem } for pid=290 comm="syz-executor363" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 26.368966][ T28] audit: type=1400 audit(1753598624.180:65): avc: denied { read write } for pid=290 comm="syz-executor363" 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 291] read(3, [pid 290] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 290] futex(0x7ff8c24fa40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 290] futex(0x7ff8c24fa41c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff8c23ee000 [pid 290] mprotect(0x7ff8c23ef000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 290] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 290] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff8c240e990, parent_tid=0x7ff8c240e990, exit_signal=0, stack=0x7ff8c23ee000, stack_size=0x20300, tls=0x7ff8c240e6c0} => {parent_tid=[293]}, 88) = 293 [pid 290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 290] futex(0x7ff8c24fa418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7ff8c24fa41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 293 attached [pid 293] set_robust_list(0x7ff8c240e9a0, 24) = 0 [pid 293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 293] rename("./file0/../file0/file0", "./file0/../file0/file0" [pid 291] <... 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\x25\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8231) = 46 [pid 291] write(3, "\xab\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x09\x00\x00\x00\x00\x00\x00\x00\x0d\x00\x00\x00"..., 171) = 171 [pid 291] futex(0x7ff8c24fa40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 26.392542][ T28] audit: type=1400 audit(1753598624.180:66): avc: denied { open } for pid=290 comm="syz-executor363" 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 [ 26.408695][ T293] general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN [ 26.416012][ T28] audit: type=1400 audit(1753598624.180:67): avc: denied { mounton } for pid=290 comm="syz-executor363" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 26.427629][ T293] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 26.427647][ T293] CPU: 0 PID: 293 Comm: syz-executor363 Not tainted 6.1.145-syzkaller-00015-g2ff414a09808 #0 [ 26.427664][ T293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 26.427671][ T293] RIP: 0010:do_renameat2+0x49f/0xf60 [ 26.427721][ T293] Code: ff 48 89 c2 48 3d 01 f0 ff ff 72 0d 49 89 d5 e8 d7 63 af ff e9 36 04 00 00 49 89 d4 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 04 84 c0 48 89 54 24 10 0f 85 e7 05 00 00 8b 1a be 00 [ 26.427735][ T293] RSP: 0018:ffffc90000e87d00 EFLAGS: 00010206 [ 26.450816][ T28] audit: type=1400 audit(1753598624.180:68): avc: denied { mount } for pid=290 comm="syz-executor363" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 26.458846][ T293] RAX: dffffc0000000000 RBX: ffff88810be2a200 RCX: ffff88810813d100 [ 26.458861][ T293] RDX: 000000000000001b RSI: 0000000000000004 RDI: ffff88810813d100 [ 26.458871][ T293] RBP: ffffc90000e87ed8 R08: dffffc0000000000 R09: fffff520001d0f7d [ 26.458882][ T293] R10: fffff520001d0f7d R11: 1ffff920001d0f7c R12: 0000000000000003 [ 26.470355][ T28] audit: type=1400 audit(1753598624.230:69): avc: denied { read } for pid=85 comm="syslogd" name="log" dev="sda1" ino=2010 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1 [ 26.479154][ T293] R13: 0000000000000000 R14: ffffc90000e87e01 R15: ffff888107ffd110 [ 26.479173][ T293] FS: 00007ff8c240e6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 26.479187][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.479198][ T293] CR2: 00007ff8c240ed58 CR3: 000000011143e000 CR4: 00000000003506b0 [ 26.479211][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.479220][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.479229][ T293] Call Trace: [ 26.479235][ T293] [ 26.484727][ T28] audit: type=1400 audit(1753598624.230:70): avc: denied { search } for pid=85 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 26.504250][ T293] ? __cfi_do_renameat2+0x10/0x10 [ 26.504278][ T293] ? strncpy_from_user+0x17a/0x2d0 [ 26.510561][ T28] audit: type=1400 audit(1753598624.230:71): avc: denied { write } for pid=85 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 26.532352][ T293] ? getname_flags+0x206/0x500 [ 26.532387][ T293] __x64_sys_rename+0x86/0x90 [ 26.541058][ T28] audit: type=1400 audit(1753598624.230:72): avc: denied { add_name } for pid=85 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 26.548304][ T293] x64_sys_call+0x300/0x9a0 [ 26.548328][ T293] do_syscall_64+0x4c/0xa0 [ 26.556553][ T28] audit: type=1400 audit(1753598624.230:73): avc: denied { create } for pid=85 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 26.564241][ T293] ? clear_bhb_loop+0x30/0x80 [ 26.564263][ T293] ? clear_bhb_loop+0x30/0x80 [ 26.564280][ T293] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.768096][ T293] RIP: 0033:0x7ff8c246d579 [ 26.772510][ T293] 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 [ 26.792100][ T293] RSP: 002b:00007ff8c240e218 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [pid 291] futex(0x7ff8c24fa408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 290] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 26.800495][ T293] RAX: ffffffffffffffda RBX: 00007ff8c24fa418 RCX: 00007ff8c246d579 [ 26.808447][ T293] RDX: 00007ff8c244ad06 RSI: 0000200000000140 RDI: 0000200000000100 [ 26.816403][ T293] RBP: 00007ff8c24fa410 R08: 00007fffb9d90b47 R09: 0000000000000000 [ 26.824359][ T293] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff8c24c7034 [ 26.832314][ T293] R13: 00002000000021c0 R14: 0000200000000100 R15: 00007fffb9d90b48 [ 26.840277][ T293] [ 26.843277][ T293] Modules linked in: [ 26.847854][ T293] ---[ end trace 0000000000000000 ]--- [ 26.853401][ T293] RIP: 0010:do_renameat2+0x49f/0xf60 [ 26.858706][ T293] Code: ff 48 89 c2 48 3d 01 f0 ff ff 72 0d 49 89 d5 e8 d7 63 af ff e9 36 04 00 00 49 89 d4 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 04 84 c0 48 89 54 24 10 0f 85 e7 05 00 00 8b 1a be 00 [ 26.878389][ T293] RSP: 0018:ffffc90000e87d00 EFLAGS: 00010206 [ 26.884521][ T293] RAX: dffffc0000000000 RBX: ffff88810be2a200 RCX: ffff88810813d100 [ 26.892527][ T293] RDX: 000000000000001b RSI: 0000000000000004 RDI: ffff88810813d100 [ 26.900584][ T293] RBP: ffffc90000e87ed8 R08: dffffc0000000000 R09: fffff520001d0f7d [ 26.908700][ T293] R10: fffff520001d0f7d R11: 1ffff920001d0f7c R12: 0000000000000003 [ 26.916686][ T293] R13: 0000000000000000 R14: ffffc90000e87e01 R15: ffff888107ffd110 [ 26.924667][ T293] FS: 00007ff8c240e6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 26.933608][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.940209][ T293] CR2: 00007ff8c240ed58 CR3: 000000011143e000 CR4: 00000000003506b0 [pid 290] exit_group(0 [pid 291] <... futex resumed>) = ? [pid 290] <... exit_group resumed>) = ? [pid 291] +++ exited with 0 +++ [ 26.948352][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.956529][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.964523][ T293] Kernel panic - not syncing: Fatal exception [ 26.970837][ T293] Kernel Offset: disabled [ 26.975146][ T293] Rebooting in 86400 seconds..