./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor695200525 <...> Warning: Permanently added '10.128.0.173' (ED25519) to the list of known hosts. execve("./syz-executor695200525", ["./syz-executor695200525"], 0x7ffff315b600 /* 10 vars */) = 0 brk(NULL) = 0x555586af6000 brk(0x555586af6d00) = 0x555586af6d00 arch_prctl(ARCH_SET_FS, 0x555586af6380) = 0 set_tid_address(0x555586af6650) = 5226 set_robust_list(0x555586af6660, 24) = 0 rseq(0x555586af6ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor695200525", 4096) = 27 getrandom("\x40\x84\x7c\xa2\xf5\x7a\x0d\xc9", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555586af6d00 brk(0x555586b17d00) = 0x555586b17d00 brk(0x555586b18000) = 0x555586b18000 mprotect(0x7f1f62f45000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555586af6650) = 5227 ./strace-static-x86_64: Process 5227 attached [pid 5227] set_robust_list(0x555586af6660, 24) = 0 [pid 5227] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5227] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5227] setsid() = 1 [pid 5227] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5227] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5227] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5227] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5227] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5227] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5227] unshare(CLONE_NEWNS) = 0 [pid 5227] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5227] unshare(CLONE_NEWIPC) = 0 [pid 5227] unshare(CLONE_NEWCGROUP) = 0 [pid 5227] unshare(CLONE_NEWUTS) = 0 [pid 5227] unshare(CLONE_SYSVSEM) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "16777216", 8) = 8 [pid 5227] close(3) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "536870912", 9) = 9 [pid 5227] close(3) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "1024", 4) = 4 [pid 5227] close(3) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "8192", 4) = 4 [pid 5227] close(3) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "1024", 4) = 4 [pid 5227] close(3) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "1024", 4) = 4 [pid 5227] close(3) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5227] close(3) = 0 [pid 5227] getpid() = 1 [pid 5227] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5230] set_robust_list(0x555586af6660, 24 [pid 5227] <... clone resumed>, child_tidptr=0x555586af6650) = 2 [pid 5230] <... set_robust_list resumed>) = 0 [pid 5230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5230] setpgid(0, 0) = 0 [pid 5230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5230] write(3, "1000", 4) = 4 [pid 5230] close(3) = 0 [pid 5230] read(200, "\x33\x33\x00\x00\x00\x16\xaa\xaa\xaa\xaa\xaa\xaa\x86\xdd\x60\x00\x00\x00\x00\x38\x00\x01\xfe\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xaa\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x16\x3a\x00\x05\x02\x00\x00\x01\x00\x8f\x00\xc2\x46\x00\x00\x00\x02\x04\x00\x00\x00\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\xaa\xaa\xaa\x04\x00\x00\x00\xff\x02\x00\x00\x00\x00"..., 1000) = 110 [pid 5230] read(200, 0x7fffa1097ed0, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5230] write(1, "executing program\n", 18executing program ) = 18 [pid 5230] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 3 [pid 5230] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 4 [pid 5230] sendto(4, [{nlmsg_len=32, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x03\x00\x00\x00\x0c\x00\x02\x00\x65\x74\x68\x74\x6f\x6f\x6c\x00"], 32, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 32 [pid 5230] recvfrom(4, [{nlmsg_len=996, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=0, nlmsg_seq=0, nlmsg_pid=2}, "\x01\x02\x00\x00\x0c\x00\x02\x00\x65\x74\x68\x74\x6f\x6f\x6c\x00\x06\x00\x01\x00\x16\x00\x00\x00\x08\x00\x03\x00\x01\x00\x00\x00\x08\x00\x04\x00\x00\x00\x00\x00\x08\x00\x05\x00\x00\x00\x00\x00\x88\x03\x06\x00\x14\x00\x01\x00\x08\x00\x01\x00\x01\x00\x00\x00\x08\x00\x02\x00\x0e\x00\x00\x00\x14\x00\x02\x00\x08\x00\x01\x00\x02\x00\x00\x00\x08\x00\x02\x00\x0e\x00\x00\x00\x14\x00\x03\x00\x08\x00\x01\x00"...], 4096, 0, NULL, NULL) = 996 [pid 5230] recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=2}, {error=0, msg={nlmsg_len=32, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 [pid 5230] close(4) = 0 [pid 5230] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x2c\x00\x00\x00\x16\x00\x0d\x00\x00\x00\x00\x10\x00\x00\x00\x00\x1a\x00\x00\x00\x18\x00\x01\x80\x14\x00\x02\x00\x73\x79\x7a\x5f\x74\x75\x6e\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=44}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 44 [ 57.826604][ T5230] [ 57.828973][ T5230] ================================================ [ 57.835447][ T5230] WARNING: lock held when returning to user space! [ 57.841929][ T5230] 6.11.0-rc4-syzkaller-00565-gf9db28bb09f4 #0 Not tainted [ 57.849010][ T5230] ------------------------------------------------ [ 57.855481][ T5230] syz-executor695/5230 is leaving the kernel with locks still held! [ 57.863429][ T5230] 1 lock held by syz-executor695/5230: [pid 5230] close(3) = 0 [pid 5230] close(4) = -1 EBADF (Bad file descriptor) [pid 5230] close(5) = -1 EBADF (Bad file descriptor) [pid 5230] close(6) = -1 EBADF (Bad file descriptor) [pid 5230] close(7) = -1 EBADF (Bad file descriptor) [pid 5230] close(8) = -1 EBADF (Bad file descriptor) [pid 5230] close(9) = -1 EBADF (Bad file descriptor) [pid 5230] close(10) = -1 EBADF (Bad file descriptor) [ 57.868861][ T5230] #0: ffffffff8fc84b88 (rtnl_mutex){+.+.}-{3:3}, at: ethnl_act_cable_test+0x187/0x3f0 [pid 5230] close(11) = -1 EBADF (Bad file descriptor) [pid 5230] close(12) = -1 EBADF (Bad file descriptor) [pid 5230] close(13) = -1 EBADF (Bad file descriptor) [pid 5230] close(14) = -1 EBADF (Bad file descriptor) [pid 5230] close(15) = -1 EBADF (Bad file descriptor) [pid 5230] close(16) = -1 EBADF (Bad file descriptor) [pid 5230] close(17) = -1 EBADF (Bad file descriptor) [pid 5230] close(18) = -1 EBADF (Bad file descriptor) [pid 5230] close(19) = -1 EBADF (Bad file descriptor) [pid 5230] close(20) = -1 EBADF (Bad file descriptor) [pid 5230] close(21) = -1 EBADF (Bad file descriptor) [pid 5230] close(22) = -1 EBADF (Bad file descriptor) [pid 5230] close(23) = -1 EBADF (Bad file descriptor) [pid 5230] close(24) = -1 EBADF (Bad file descriptor) [pid 5230] close(25) = -1 EBADF (Bad file descriptor) [pid 5230] close(26) = -1 EBADF (Bad file descriptor) [pid 5230] close(27) = -1 EBADF (Bad file descriptor) [pid 5230] close(28) = -1 EBADF (Bad file descriptor) [pid 5230] close(29) = -1 EBADF (Bad file descriptor) [pid 5230] exit_group(0) = ? [pid 5230] +++ exited with 0 +++ [pid 5227] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5227] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5227] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5231 attached , child_tidptr=0x555586af6650) = 3 [pid 5231] set_robust_list(0x555586af6660, 24) = 0 [pid 5231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5231] setpgid(0, 0) = 0 [pid 5231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5231] write(3, "1000", 4) = 4 [pid 5231] close(3) = 0 [pid 5231] read(200, 0x7fffa1097ed0, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5231] write(1, "executing program\n", 18executing program ) = 18 [pid 5231] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 3 [pid 5231] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 4 [pid 5231] sendto(4, [{nlmsg_len=32, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x03\x00\x00\x00\x0c\x00\x02\x00\x65\x74\x68\x74\x6f\x6f\x6c\x00"], 32, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 32 [pid 5231] recvfrom(4, [{nlmsg_len=996, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=0, nlmsg_seq=0, nlmsg_pid=3}, "\x01\x02\x00\x00\x0c\x00\x02\x00\x65\x74\x68\x74\x6f\x6f\x6c\x00\x06\x00\x01\x00\x16\x00\x00\x00\x08\x00\x03\x00\x01\x00\x00\x00\x08\x00\x04\x00\x00\x00\x00\x00\x08\x00\x05\x00\x00\x00\x00\x00\x88\x03\x06\x00\x14\x00\x01\x00\x08\x00\x01\x00\x01\x00\x00\x00\x08\x00\x02\x00\x0e\x00\x00\x00\x14\x00\x02\x00\x08\x00\x01\x00\x02\x00\x00\x00\x08\x00\x02\x00\x0e\x00\x00\x00\x14\x00\x03\x00\x08\x00\x01\x00"...], 4096, 0, NULL, NULL) = 996 [pid 5231] recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=3}, {error=0, msg={nlmsg_len=32, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 [pid 5231] close(4) = 0 [pid 5231] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x2c\x00\x00\x00\x16\x00\x0d\x00\x00\x00\x00\x10\x00\x00\x00\x00\x1a\x00\x00\x00\x18\x00\x01\x80\x14\x00\x02\x00\x73\x79\x7a\x5f\x74\x75\x6e\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=44}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5227] kill(-3, SIGKILL) = 0 [pid 5227] kill(3, SIGKILL) = 0 [pid 5227] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5227] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5227] getdents64(3, 0x555586af76f0 /* 2 entries */, 32768) = 48 [pid 5227] getdents64(3, 0x555586af76f0 /* 0 entries */, 32768) = 0 [pid 5227] close(3) = 0