./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor456098700

<...>
DUID 00:04:91:bc:de:6a:11:68:5e:b9:f7:f7:da:c6:96:db:93:18
forked to background, child pid 4647
[   32.212106][ T4648] 8021q: adding VLAN 0 to HW filter on device bond0
[   32.221762][ T4648] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK

syzkaller
Warning: Permanently added '10.128.0.35' (ECDSA) to the list of known hosts.
execve("./syz-executor456098700", ["./syz-executor456098700"], 0x7ffd399d47e0 /* 10 vars */) = 0
brk(NULL)                               = 0x5555569af000
brk(0x5555569afc40)                     = 0x5555569afc40
arch_prctl(ARCH_SET_FS, 0x5555569af300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor456098700", 4096) = 27
brk(0x5555569d0c40)                     = 0x5555569d0c40
brk(0x5555569d1000)                     = 0x5555569d1000
mprotect(0x7fed41225000, 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./strace-static-x86_64: Process 5070 attached
, child_tidptr=0x5555569af5d0) = 5070
[pid  5070] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid  5070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5070] setsid()                    = 1
[pid  5070] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid  5070] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid  5070] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid  5070] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid  5070] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid  5070] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid  5070] unshare(CLONE_NEWNS)        = 0
[pid  5070] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid  5070] unshare(CLONE_NEWIPC)       = 0
[pid  5070] unshare(CLONE_NEWCGROUP)    = 0
[pid  5070] unshare(CLONE_NEWUTS)       = 0
[pid  5070] unshare(CLONE_SYSVSEM)      = 0
[pid  5070] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5070] write(3, "16777216", 8)     = 8
[pid  5070] close(3)                    = 0
[pid  5070] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3
[pid  5070] write(3, "536870912", 9)    = 9
[pid  5070] close(3)                    = 0
[pid  5070] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5070] write(3, "1024", 4)         = 4
[pid  5070] close(3)                    = 0
[pid  5070] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5070] write(3, "8192", 4)         = 4
[pid  5070] close(3)                    = 0
[pid  5070] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5070] write(3, "1024", 4)         = 4
[pid  5070] close(3)                    = 0
[pid  5070] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3
[pid  5070] write(3, "1024", 4)         = 4
[pid  5070] close(3)                    = 0
[pid  5070] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3
[pid  5070] write(3, "1024 1048576 500 1024", 21) = 21
[pid  5070] close(3)                    = 0
[pid  5070] getpid()                    = 1
[pid  5070] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5070] capset({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5070] unshare(CLONE_NEWNET)       = 0
[pid  5070] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid  5070] write(3, "0 65535", 7)      = 7
[pid  5070] close(3)                    = 0
[pid  5070] mkdir("/dev/binderfs", 0777) = 0
[pid  5070] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid  5070] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5070] socket(AF_NETLINK, SOCK_RAW|SOCK_NONBLOCK, NETLINK_ROUTE) = 3
[pid  5070] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x10\x00\x00\x00\xf2\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=16}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 16
[pid  5070] sendmsg(-1, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=NULL, iov_len=0}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 EBADF (Bad file descriptor)
[pid  5070] getsockname(3, {sa_family=AF_NETLINK, nl_pid=1, nl_groups=00000000}, [20 => 12]) = 0
[pid  5070] sendmsg(-1, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x38\x00\x00\x00\x24\x00\x07\x05\x00\x00\x00\x40\x13\xa2\xa3\x00\x05\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x09\x00\x01\x00\x68\x66\x73\x63\x00\x00\x00\x00\x08\x00\x02\x00\x00\x00\x00\x00", iov_len=56}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 EBADF (Bad file descriptor)
[pid  5070] sendmsg(-1, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x34\x00\x00\x00\x2c\x00\x27\x0d\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\xf1\xff\xf2\xff\x0c\x00\x01\x00\x74\x63\x69\x6e\x64\x65\x78\x00\x04\x00\x02\x00", iov_len=52}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 EBADF (Bad file descriptor)
[pid  5070] socket(AF_NETLINK, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 4
[pid  5070] sendmmsg(4, [{msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x34\x00\x00\x00\x2c\x00\x27\x0d\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\xf1\xff\xf2\xff\x0c\x00\x01\x00\x74\x63\x69\x6e\x64\x65\x78\x00\x04\x00\x02\x00", iov_len=52}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, msg_len=52}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x38\x00\x00\x00\x24\x00\x07\x05\x00\x00\x00\x40\x13\xa2\xa3\x00\x05\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x09\x00\x01\x00\x68\x66\x73\x63\x00\x00\x00\x00\x08\x00\x02\x00\x00\x00\x00\x00", iov_len=56}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, msg_len=56}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x34\x00\x00\x00\x2c\x00\x27\x0d\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\xf1\xff\xf2\xff\x0c\x00\x01\x00\x74\x63\x69\x6e\x64\x65\x78\x00\x04\x00\x02\x00", iov_len=52}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, msg_len=52}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=0x507002400000038, msg_namelen=1073741824, msg_iov=0x100000005, msg_iovlen=18446744069414584320, msg_control=0x1000900000000, msg_controllen=1668507240, msg_flags=MSG_CTRUNC|MSG_SENDPAGE_NOTLAST}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=0xd27002c00000034, msg_namelen=0, msg_iov=0x100000000, msg_iovlen=196608, msg_control=0x1000cfff2fff1, msg_controllen=33888479228814196, msg_flags=MSG_DONTROUTE|MSG_SENDPAGE_NOTLAST}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=0x3f200000010, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name={sa_family=AF_NETLINK, nl_pid=1010, nl_groups=00000000}, msg_namelen=16, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x10\x00\x00\x00\xf2\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=16}], msg_iovlen=1, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, {msg_hdr={msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}}, ...], 1734208534, 0) = 3
[pid  5070] socket(AF_NETLINK, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5
syzkaller login: [   51.884111][ T5070] Zero length message leads to an empty skb
[   51.892845][ T5070] general protection fault, probably for non-canonical address 0xdffffc0000000015: 0000 [#1] PREEMPT SMP KASAN
[   51.904592][ T5070] KASAN: null-ptr-deref in range [0x00000000000000a8-0x00000000000000af]
[   51.913008][ T5070] CPU: 0 PID: 5070 Comm: syz-executor456 Not tainted 6.2.0-rc7-syzkaller-00112-gc68f345b7c42 #0
[   51.923426][ T5070] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
[   51.933471][ T5070] RIP: 0010:tcindex_set_parms+0x1a6a/0x2990
[   51.939377][ T5070] Code: 01 e9 e9 fe ff ff 4c 8b bd 28 fe ff ff e8 0e 57 7d f9 48 8d bb a8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 94 0c 00 00 48 8b 85 f8 fd ff ff 48 8b 9b a8 00
[   51.958979][ T5070] RSP: 0018:ffffc90003d3ef88 EFLAGS: 00010202
[   51.965041][ T5070] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   51.973008][ T5070] RDX: 0000000000000015 RSI: ffffffff8803a102 RDI: 00000000000000a8
[   51.980971][ T5070] RBP: ffffc90003d3f1d8 R08: 0000000000000001 R09: 0000000000000000
[   51.988935][ T5070] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88801e2b10a8
[   51.996897][ T5070] R13: dffffc0000000000 R14: 0000000000030000 R15: ffff888017b3be00
[   52.004864][ T5070] FS:  00005555569af300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
[   52.013790][ T5070] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.020370][ T5070] CR2: 000056041c6d2000 CR3: 000000002bfca000 CR4: 00000000003506f0
[   52.028517][ T5070] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   52.036482][ T5070] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   52.044445][ T5070] Call Trace:
[   52.047718][ T5070]  <TASK>
[   52.050647][ T5070]  ? tcindex_destroy+0xa10/0xa10
[   52.055605][ T5070]  ? memset+0x24/0x50
[   52.059600][ T5070]  ? __nla_validate_parse+0x2e4/0x2550
[   52.065065][ T5070]  ? memset+0x24/0x50
[   52.069063][ T5070]  ? tc_new_tfilter+0x6b2/0x2220
[   52.074020][ T5070]  tcindex_change+0x1ea/0x320
[   52.078716][ T5070]  ? tcindex_set_parms+0x2990/0x2990
[   52.084089][ T5070]  ? lockdep_rtnl_is_held+0x26/0x30
[   52.089297][ T5070]  ? tcindex_lookup+0x99/0x390
[   52.094062][ T5070]  tc_new_tfilter+0x96e/0x2220
[   52.098836][ T5070]  ? tc_del_tfilter+0x1560/0x1560
[   52.103877][ T5070]  ? lockdep_hardirqs_on_prepare+0x410/0x410
[   52.109863][ T5070]  ? mark_lock.part.0+0xee/0x1910
[   52.114894][ T5070]  ? lock_chain_count+0x20/0x20
[   52.119758][ T5070]  ? tc_del_tfilter+0x1560/0x1560
[   52.124782][ T5070]  rtnetlink_rcv_msg+0x959/0xca0
[   52.129718][ T5070]  ? rtnl_getlink+0xae0/0xae0
[   52.134393][ T5070]  ? lockdep_hardirqs_on_prepare+0x410/0x410
[   52.140399][ T5070]  ? lockdep_hardirqs_on_prepare+0x410/0x410
[   52.146384][ T5070]  ? kasan_save_stack+0x35/0x40
[   52.151251][ T5070]  ? kasan_save_stack+0x22/0x40
[   52.156099][ T5070]  netlink_rcv_skb+0x165/0x440
[   52.160881][ T5070]  ? rtnl_getlink+0xae0/0xae0
[   52.165554][ T5070]  ? netlink_ack+0x1370/0x1370
[   52.170323][ T5070]  ? netlink_deliver_tap+0x1b1/0xc50
[   52.175609][ T5070]  netlink_unicast+0x547/0x7f0
[   52.180374][ T5070]  ? netlink_attachskb+0x890/0x890
[   52.185571][ T5070]  ? __virt_addr_valid+0x61/0x2e0
[   52.190600][ T5070]  ? __phys_addr_symbol+0x30/0x70
[   52.195646][ T5070]  ? __check_object_size+0x2e2/0x5a0
[   52.200931][ T5070]  netlink_sendmsg+0x91b/0xe10
[   52.205702][ T5070]  ? netlink_unicast+0x7f0/0x7f0
[   52.210642][ T5070]  ? bpf_lsm_socket_sendmsg+0x9/0x10
[   52.215934][ T5070]  ? netlink_unicast+0x7f0/0x7f0
[   52.220873][ T5070]  sock_sendmsg+0xd3/0x120
[   52.225296][ T5070]  ____sys_sendmsg+0x334/0x8c0
[   52.230055][ T5070]  ? copy_msghdr_from_user+0xfc/0x150
[   52.235439][ T5070]  ? kernel_sendmsg+0x50/0x50
[   52.240115][ T5070]  ? find_held_lock+0x2d/0x110
[   52.244887][ T5070]  ___sys_sendmsg+0x110/0x1b0
[   52.249575][ T5070]  ? do_recvmmsg+0x6e0/0x6e0
[   52.254168][ T5070]  ? lockdep_hardirqs_on_prepare+0x410/0x410
[   52.260154][ T5070]  ? lockdep_hardirqs_on_prepare+0x410/0x410
[   52.266139][ T5070]  ? __schedule+0xb92/0x5450
[   52.270759][ T5070]  ? mark_held_locks+0x9f/0xe0
[   52.275530][ T5070]  ? __fget_light+0x20a/0x270
[   52.280204][ T5070]  __sys_sendmmsg+0x18f/0x460
[   52.284881][ T5070]  ? __ia32_sys_sendmsg+0xb0/0xb0
[   52.289908][ T5070]  ? _raw_spin_lock_irq+0x45/0x50
[   52.294933][ T5070]  ? find_held_lock+0x2d/0x110
[   52.299702][ T5070]  ? ptrace_notify+0xfe/0x140
[   52.304377][ T5070]  ? lock_downgrade+0x6e0/0x6e0
[   52.309247][ T5070]  ? _raw_spin_unlock_irq+0x23/0x50
[   52.314539][ T5070]  ? lockdep_hardirqs_on+0x7d/0x100
[   52.319746][ T5070]  __x64_sys_sendmmsg+0x9d/0x100
[   52.324683][ T5070]  do_syscall_64+0x39/0xb0
[   52.329113][ T5070]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[   52.335014][ T5070] RIP: 0033:0x7fed411b7cd9
[   52.339421][ T5070] Code: 28 c3 e8 1a 15 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
[   52.359021][ T5070] RSP: 002b:00007ffd73b418c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
[   52.367426][ T5070] RAX: ffffffffffffffda RBX: 00007fed41225ed0 RCX: 00007fed411b7cd9
[   52.375404][ T5070] RDX: 04924924924926d3 RSI: 0000000020000200 RDI: 0000000000000005
[   52.383370][ T5070] RBP: 00007ffd73b418d8 R08: 00007fed41225e40 R09: 00007fed41225e40
[   52.391337][ T5070] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd73b418e0
[   52.399300][ T5070] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   52.407270][ T5070]  </TASK>
[   52.410278][ T5070] Modules linked in:
[   52.414457][ T5070] ---[ end trace 0000000000000000 ]---
[   52.419922][ T5070] RIP: 0010:tcindex_set_parms+0x1a6a/0x2990
[   52.426029][ T5070] Code: 01 e9 e9 fe ff ff 4c 8b bd 28 fe ff ff e8 0e 57 7d f9 48 8d bb a8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 94 0c 00 00 48 8b 85 f8 fd ff ff 48 8b 9b a8 00
[   52.445833][ T5070] RSP: 0018:ffffc90003d3ef88 EFLAGS: 00010202
[   52.451890][ T5070] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   52.460056][ T5070] RDX: 0000000000000015 RSI: ffffffff8803a102 RDI: 00000000000000a8
[   52.468104][ T5070] RBP: ffffc90003d3f1d8 R08: 0000000000000001 R09: 0000000000000000
[   52.476143][ T5070] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88801e2b10a8
[   52.484127][ T5070] R13: dffffc0000000000 R14: 0000000000030000 R15: ffff888017b3be00
[   52.492119][ T5070] FS:  00005555569af300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
[   52.501078][ T5070] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.507678][ T5070] CR2: 0000000000976528 CR3: 000000002bfca000 CR4: 00000000003506e0
[   52.515668][ T5070] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   52.523625][ T5070] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   52.531616][ T5070] Kernel panic - not syncing: Fatal exception
[   52.537835][ T5070] Kernel Offset: disabled
[   52.542166][ T5070] Rebooting in 86400 seconds..