./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor649532147 <...> Warning: Permanently added '10.128.0.73' (ECDSA) to the list of known hosts. execve("./syz-executor649532147", ["./syz-executor649532147"], 0x7fff5d6edb80 /* 10 vars */) = 0 brk(NULL) = 0x5555555d8000 brk(0x5555555d8d40) = 0x5555555d8d40 arch_prctl(ARCH_SET_FS, 0x5555555d8400) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 set_tid_address(0x5555555d86d0) = 3612 set_robust_list(0x5555555d86e0, 24) = 0 rt_sigaction(SIGRTMIN, {sa_handler=0x7f312a8f7240, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7f312a8f6790}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f312a8f72e0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f312a8f6790}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor649532147", 4096) = 27 brk(0x5555555f9d40) = 0x5555555f9d40 brk(0x5555555fa000) = 0x5555555fa000 mprotect(0x7f312a9b8000, 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 getpid() = 3612 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 write(3, "10000000000", 11) = 11 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 write(3, "20", 2) = 2 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 write(3, "100", 3) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 write(3, "7 4 1 3", 7) = 7 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3 write(3, "0 65535", 7) = 7 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 write(3, "3612", 4) = 4 close(3) = 0 socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 4 sendto(4, [{nlmsg_len=36, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x03\x00\x00\x00\x0d\x00\x02\x00\x6e\x6c\x38\x30\x32\x31\x35\x34\x00\x00\x00\x00"], 36, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 36 recvfrom(4, [{nlmsg_len=680, nlmsg_type=nlctrl, nlmsg_flags=0, nlmsg_seq=0, nlmsg_pid=3612}, "\x01\x02\x00\x00\x0d\x00\x02\x00\x6e\x6c\x38\x30\x32\x31\x35\x34\x00\x00\x00\x00\x06\x00\x01\x00\x1c\x00\x00\x00\x08\x00\x03\x00\x01\x00\x00\x00\x08\x00\x04\x00\x00\x00\x00\x00\x08\x00\x05\x00\x25\x00\x00\x00\x48\x02\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\x05\x00\x00\x00\x08\x00\x02\x00\x0e\x00\x00\x00\x14\x00\x03\x00"...], 4096, 0, NULL, NULL) = 680 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=3612}, {error=0, msg={nlmsg_len=36, nlmsg_type=nlctrl, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 access("/proc/net", R_OK) = 0 access("/proc/net/unix", R_OK) = 0 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan0", ifr_ifindex=11}) = 0 close(5) = 0 sendto(4, [{nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x0b\x00\x00\x00\x08\x00\x03\x00\x0b\x00\x00\x00\x06\x00\x0a\x00\xa0\xaa\x00\x00"], 36, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 36 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=3612}, {error=0, msg={nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan0", ifr_ifindex=11}) = 0 close(5) = 0 sendto(3, [{nlmsg_len=44, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x00\x00\x00\x00\x0b\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x0c\x00\x01\x00\x02\x00\xaa\xaa\xaa\xaa\xaa\xaa"], 44, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 44 recvfrom(3, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=3612}, {error=0, msg={nlmsg_len=44, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 sendto(3, [{nlmsg_len=68, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK|NLM_F_EXCL|NLM_F_CREATE, nlmsg_seq=0, nlmsg_pid=0}, {ifi_family=AF_UNSPEC, ifi_type=ARPHRD_NETROM, ifi_index=0, ifi_flags=0, ifi_change=0}, [[{nla_len=11, nla_type=IFLA_IFNAME}, "lowpan0"...], [{nla_len=16, nla_type=IFLA_LINKINFO}, [{nla_len=10, nla_type=IFLA_INFO_KIND}, "lowpan"...]], [{nla_len=8, nla_type=IFLA_LINK}, 11]]], 68, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 68 recvfrom(3, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=3612}, {error=0, msg={nlmsg_len=68, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK|NLM_F_EXCL|NLM_F_CREATE, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan1", ifr_ifindex=12}) = 0 close(5) = 0 sendto(4, [{nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x0b\x00\x00\x00\x08\x00\x03\x00\x0c\x00\x00\x00\x06\x00\x0a\x00\xa1\xaa\x00\x00"], 36, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 36 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=3612}, {error=0, msg={nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan1", ifr_ifindex=12}) = 0 close(5) = 0 sendto(3, [{nlmsg_len=44, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, {ifi_family=AF_UNSPEC, ifi_type=ARPHRD_NETROM, ifi_index=if_nametoindex("wpan1"), ifi_flags=IFF_UP, ifi_change=0x1}, [{nla_len=12, nla_type=IFLA_ADDRESS}, 02:01:aa:aa:aa:aa:aa]], 44, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 44 recvfrom(3, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=3612}, {error=0, msg={nlmsg_len=44, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 close(3) = 0 close(4) = 0 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=0x7f312a8f1a60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f312a8f6790}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f312a8f1a60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f312a8f6790}, NULL, 8) = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3615 attached , child_tidptr=0x5555555d86d0) = 3615 [pid 3615] set_robust_list(0x5555555d86e0, 24) = 0 [pid 3615] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3615] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3615] setsid() = 1 [pid 3615] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3615] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3615] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3615] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3615] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3615] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3615] unshare(CLONE_NEWNS) = 0 [pid 3615] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3615] unshare(CLONE_NEWIPC) = 0 [pid 3615] unshare(CLONE_NEWCGROUP) = 0 [pid 3615] unshare(CLONE_NEWUTS) = 0 [pid 3615] unshare(CLONE_SYSVSEM) = 0 [pid 3615] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3615] write(3, "16777216", 8) = 8 [pid 3615] close(3) = 0 [pid 3615] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3615] write(3, "536870912", 9) = 9 [pid 3615] close(3) = 0 [pid 3615] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3615] write(3, "1024", 4) = 4 [pid 3615] close(3) = 0 [pid 3615] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3615] write(3, "8192", 4) = 4 [pid 3615] close(3) = 0 [pid 3615] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3615] write(3, "1024", 4) = 4 [pid 3615] close(3) = 0 [pid 3615] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3615] write(3, "1024", 4) = 4 [pid 3615] close(3) = 0 [pid 3615] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3615] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3615] close(3) = 0 [pid 3615] getpid() = 1 [pid 3615] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 3616] set_robust_list(0x7f312a8e69e0, 24) = 0 [pid 3616] openat(AT_FDCWD, "/dev/net/tun", O_RDONLY) = 3 [pid 3616] futex(0x7f312a9be40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3615] <... futex resumed>) = 0 [pid 3615] futex(0x7f312a9be408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3615] futex(0x7f312a9be40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3616] ioctl(3, TUNSETIFF, 0x20000200) = 0 [pid 3616] futex(0x7f312a9be40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 3615] <... futex resumed>) = 0 [pid 3615] futex(0x7f312a9be408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3615] futex(0x7f312a9be40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3616] <... futex resumed>) = 1 [pid 3616] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 4 [pid 3616] futex(0x7f312a9be40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 3615] <... futex resumed>) = 0 [pid 3615] futex(0x7f312a9be408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3615] futex(0x7f312a9be40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3616] <... futex resumed>) = 1 [pid 3616] socket(AF_PACKET, SOCK_DGRAM, htons(ETH_P_ALL)) = 5 [pid 3616] futex(0x7f312a9be40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 3615] <... futex resumed>) = 0 [pid 3615] futex(0x7f312a9be408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3615] futex(0x7f312a9be40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3616] <... futex resumed>) = 1 [pid 3616] ioctl(5, SIOCGIFINDEX, {ifr_name="rose0", ifr_ifindex=11}) = 0 [pid 3616] futex(0x7f312a9be40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3615] <... futex resumed>) = 0 [pid 3616] futex(0x7f312a9be408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3615] futex(0x7f312a9be408, FUTEX_WAKE_PRIVATE, 1000000 [pid 3616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3615] <... futex resumed>) = 0 [pid 3615] futex(0x7f312a9be40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3616] ioctl(3, TUNSETQUEUE, 0x20000340) = 0 [pid 3616] futex(0x7f312a9be40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3615] <... futex resumed>) = 0 [pid 3616] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x34\x00\x00\x00\x11\x00\x01\xe9\x0d\x7d\x1f\xc7\x4e\x1b\xed\x42\xec\x45\xb2\xfc\x0b\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", iov_len=52}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 3615] futex(0x7f312a9be408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3615] futex(0x7f312a9be40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 3615] futex(0x7f312a9be41c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3615] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f312a8a5000 [pid 3615] mprotect(0x7f312a8a6000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3615] clone(child_stack=0x7f312a8c52f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3], tls=0x7f312a8c5700, child_tidptr=0x7f312a8c59d0) = 3 [pid 3615] futex(0x7f312a9be418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3615] futex(0x7f312a9be41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3617 attached [pid 3617] set_robust_list(0x7f312a8c59e0, 24) = 0 [pid 3617] close(3) = 0 [pid 3617] futex(0x7f312a9be41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 3615] <... futex resumed>) = 0 [pid 3617] <... futex resumed>) = 1 syzkaller login: [ 49.415381][ T3616] netlink: 20 bytes leftover after parsing attributes in process `syz-executor649'. [ 49.469625][ T3616] ================================================================== [ 49.469632][ T3616] BUG: KASAN: use-after-free in free_netdev+0x58c/0x620 [ 49.469661][ T3616] Read of size 8 at addr ffff888021c8e738 by task syz-executor649/3616 [ 49.469672][ T3616] [ 49.469675][ T3616] CPU: 1 PID: 3616 Comm: syz-executor649 Not tainted 5.19.0-rc3-syzkaller #0 [ 49.469688][ T3616] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.469696][ T3616] Call Trace: [ 49.469700][ T3616] [ 49.469705][ T3616] dump_stack_lvl+0xcd/0x134 [ 49.469720][ T3616] print_address_description.constprop.0.cold+0xeb/0x495 [ 49.469737][ T3616] ? free_netdev+0x58c/0x620 [ 49.469750][ T3616] kasan_report.cold+0xf4/0x1c6 [ 49.469763][ T3616] ? free_netdev+0x58c/0x620 [ 49.469777][ T3616] free_netdev+0x58c/0x620 [ 49.469791][ T3616] netdev_run_todo+0xb18/0x10b0 [ 49.469803][ T3616] ? mutex_lock_io_nested+0x1190/0x1190 [ 49.469817][ T3616] ? generic_xdp_install+0x4a0/0x4a0 [ 49.469828][ T3616] ? rtnetlink_rcv_msg+0x3af/0xc90 [ 49.469844][ T3616] ? lock_downgrade+0x6e0/0x6e0 [ 49.469860][ T3616] ? bpf_lsm_capable+0x5/0x10 [ 49.469876][ T3616] ? rtnl_dellinkprop+0x50/0x50 [ 49.469891][ T3616] rtnetlink_rcv_msg+0x447/0xc90 [ 49.469906][ T3616] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 49.469924][ T3616] netlink_rcv_skb+0x153/0x420 [ 49.469939][ T3616] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 49.469954][ T3616] ? netlink_ack+0xa80/0xa80 [ 49.469965][ T3616] ? netlink_deliver_tap+0x1a2/0xc40 [ 49.469978][ T3616] ? netlink_deliver_tap+0x1b1/0xc40 [ 49.469991][ T3616] netlink_unicast+0x543/0x7f0 [ 49.470004][ T3616] ? netlink_attachskb+0x880/0x880 [ 49.470015][ T3616] ? __virt_addr_valid+0x5d/0x2d0 [ 49.470031][ T3616] ? __phys_addr_symbol+0x2c/0x70 [ 49.470046][ T3616] ? __check_object_size+0x2de/0x700 [ 49.470060][ T3616] netlink_sendmsg+0x917/0xe10 [ 49.470073][ T3616] ? netlink_unicast+0x7f0/0x7f0 [ 49.470086][ T3616] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 49.470099][ T3616] ? netlink_unicast+0x7f0/0x7f0 [ 49.470111][ T3616] sock_sendmsg+0xcf/0x120 [ 49.470122][ T3616] ____sys_sendmsg+0x6eb/0x810 [ 49.470134][ T3616] ? kernel_sendmsg+0x50/0x50 [ 49.470144][ T3616] ? do_recvmmsg+0x6d0/0x6d0 [ 49.470158][ T3616] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 49.470173][ T3616] ? lockdep_hardirqs_on+0x79/0x100 [ 49.470187][ T3616] ___sys_sendmsg+0xf3/0x170 [ 49.470199][ T3616] ? sendmsg_copy_msghdr+0x160/0x160 [ 49.470213][ T3616] ? __fget_files+0x248/0x440 [ 49.470227][ T3616] ? lock_downgrade+0x6e0/0x6e0 [ 49.470242][ T3616] ? ptrace_stop.part.0+0x5ec/0xa80 [ 49.470256][ T3616] ? __fget_files+0x26a/0x440 [ 49.470271][ T3616] ? __fget_light+0xe5/0x270 [ 49.470286][ T3616] __x64_sys_sendmsg+0x132/0x220 [ 49.470298][ T3616] ? __sys_sendmsg+0x1b0/0x1b0 [ 49.470313][ T3616] ? _raw_spin_unlock_irq+0x2a/0x40 [ 49.470327][ T3616] ? ptrace_notify+0xfa/0x140 [ 49.470339][ T3616] do_syscall_64+0x35/0xb0 [ 49.470354][ T3616] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 49.470369][ T3616] RIP: 0033:0x7f312a93ceb9 [ 49.470378][ T3616] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 18 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 b8 ff ff ff f7 d8 64 89 01 48 [ 49.470391][ T3616] RSP: 002b:00007f312a8e6208 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 49.470403][ T3616] RAX: ffffffffffffffda RBX: 00007f312a9be408 RCX: 00007f312a93ceb9 [ 49.470412][ T3616] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004 [ 49.470420][ T3616] RBP: 00007f312a9be400 R08: 0000000000000000 R09: 0000000000000000 [ 49.470427][ T3616] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f312a9be40c [ 49.470435][ T3616] R13: 00007ffe8081178f R14: 00007f312a8e6300 R15: 0000000000022000 [ 49.470447][ T3616] [ 49.470456][ T3616] [ 49.470458][ T3616] Allocated by task 3616: [ 49.470464][ T3616] kasan_save_stack+0x1e/0x40 [ 49.470474][ T3616] __kasan_kmalloc+0xa9/0xd0 [ 49.470483][ T3616] sk_prot_alloc+0x110/0x290 [ 49.470495][ T3616] sk_alloc+0x36/0x770 [ 49.470506][ T3616] tun_chr_open+0x7b/0x540 [ 49.470516][ T3616] misc_open+0x376/0x4a0 [ 49.470528][ T3616] chrdev_open+0x266/0x770 [ 49.470540][ T3616] do_dentry_open+0x4a1/0x11f0 [ 49.470551][ T3616] path_openat+0x1c71/0x2910 [ 49.470567][ T3616] do_filp_open+0x1aa/0x400 [ 49.470584][ T3616] do_sys_openat2+0x16d/0x4c0 [ 49.470603][ T3616] __x64_sys_openat+0x13f/0x1f0 [ 49.470616][ T3616] do_syscall_64+0x35/0xb0 [ 49.470628][ T3616] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 49.470641][ T3616] [ 49.470643][ T3616] Freed by task 3617: [ 49.470648][ T3616] kasan_save_stack+0x1e/0x40 [ 49.470657][ T3616] kasan_set_track+0x21/0x30 [ 49.470666][ T3616] kasan_set_free_info+0x20/0x30 [ 49.470678][ T3616] ____kasan_slab_free+0x166/0x1a0 [ 49.470687][ T3616] slab_free_freelist_hook+0x8b/0x1c0 [ 49.470700][ T3616] kfree+0xd6/0x4d0 [ 49.470712][ T3616] __sk_destruct+0x5e5/0x710 [ 49.470723][ T3616] __sk_free+0x1a4/0x4a0 [ 49.470734][ T3616] sk_free+0x78/0xa0 [ 49.470745][ T3616] __tun_detach+0xdb7/0x13e0 [ 49.470755][ T3616] tun_chr_close+0x15c/0x180 [ 49.470764][ T3616] __fput+0x277/0x9d0 [ 49.470773][ T3616] task_work_run+0xdd/0x1a0 [ 49.470786][ T3616] ptrace_notify+0x114/0x140 [ 49.470795][ T3616] syscall_exit_to_user_mode_prepare+0xdb/0x230 [ 49.470807][ T3616] syscall_exit_to_user_mode+0x9/0x50 [ 49.470818][ T3616] do_syscall_64+0x42/0xb0 [ 49.470830][ T3616] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 49.470843][ T3616] [ 49.470845][ T3616] The buggy address belongs to the object at ffff888021c8e000 [ 49.470845][ T3616] which belongs to the cache kmalloc-4k of size 4096 [ 49.470854][ T3616] The buggy address is located 1848 bytes inside of [ 49.470854][ T3616] 4096-byte region [ffff888021c8e000, ffff888021c8f000) [ 49.470865][ T3616] [ 49.470866][ T3616] The buggy address belongs to the physical page: [ 49.470871][ T3616] page:ffffea0000872200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x21c88 [ 49.470884][ T3616] head:ffffea0000872200 order:3 compound_mapcount:0 compound_pincount:0 [ 49.470893][ T3616] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 49.470911][ T3616] raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888011842140 [ 49.470922][ T3616] raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 [ 49.470928][ T3616] page dumped because: kasan: bad access detected [ 49.470932][ T3616] page_owner tracks the page as allocated [ 49.470935][ T3616] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3615, tgid 3615 (syz-executor649), ts 49399578044, free_ts 43764171577 [ 49.470957][ T3616] get_page_from_freelist+0x1290/0x3b70 [ 49.470969][ T3616] __alloc_pages+0x1c7/0x510 [ 49.470980][ T3616] alloc_pages+0x1aa/0x310 [ 49.470989][ T3616] allocate_slab+0x26c/0x3c0 [ 49.471001][ T3616] ___slab_alloc+0x985/0xd90 [ 49.471013][ T3616] __slab_alloc.constprop.0+0x4d/0xa0 [ 49.471026][ T3616] kmem_cache_alloc_trace+0x310/0x3f0 [ 49.471039][ T3616] tomoyo_init_log+0x18a/0x1ed0 [ 49.471051][ T3616] tomoyo_supervisor+0x34d/0xf00 [ 49.471063][ T3616] tomoyo_path_permission+0x270/0x3a0 [ 49.471075][ T3616] tomoyo_path_perm+0x39e/0x400 [ 49.471088][ T3616] tomoyo_path_symlink+0x94/0xe0 [ 49.471098][ T3616] security_path_symlink+0xdf/0x150 [ 49.471112][ T3616] do_symlinkat+0x106/0x2e0 [ 49.471122][ T3616] __x64_sys_symlink+0x75/0x90 [ 49.471133][ T3616] do_syscall_64+0x35/0xb0 [ 49.471146][ T3616] page last free stack trace: [ 49.471148][ T3616] free_pcp_prepare+0x549/0xd20 [ 49.471158][ T3616] free_unref_page+0x19/0x6a0 [ 49.471169][ T3616] __unfreeze_partials+0x17c/0x1a0 [ 49.471181][ T3616] qlist_free_all+0x6a/0x170 [ 49.471192][ T3616] kasan_quarantine_reduce+0x180/0x200 [ 49.471204][ T3616] __kasan_slab_alloc+0xa2/0xc0 [ 49.471213][ T3616] kmem_cache_alloc_node+0x255/0x3f0 [ 49.471226][ T3616] __alloc_skb+0x215/0x340 [ 49.471236][ T3616] tcp_stream_alloc_skb+0x66/0x900 [ 49.471246][ T3616] tcp_sendmsg_locked+0xad1/0x2fc0 [ 49.471256][ T3616] tcp_sendmsg+0x2b/0x40 [ 49.471265][ T3616] inet_sendmsg+0x99/0xe0 [ 49.471275][ T3616] sock_sendmsg+0xcf/0x120 [ 49.471284][ T3616] sock_write_iter+0x284/0x3c0 [ 49.471293][ T3616] new_sync_write+0x38a/0x560 [ 49.471306][ T3616] vfs_write+0x7c0/0xac0 [ 49.471318][ T3616] [ 49.471319][ T3616] Memory state around the buggy address: [ 49.471324][ T3616] ffff888021c8e600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.471332][ T3616] ffff888021c8e680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.471339][ T3616] >ffff888021c8e700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.471345][ T3616] ^ [ 49.471351][ T3616] ffff888021c8e780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.471358][ T3616] ffff888021c8e800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.471364][ T3616] ================================================================== [ 49.471528][ T3616] Kernel panic - not syncing: panic_on_warn set ... [ 50.337073][ T3616] CPU: 1 PID: 3616 Comm: syz-executor649 Not tainted 5.19.0-rc3-syzkaller #0 [ 50.345815][ T3616] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.355852][ T3616] Call Trace: [ 50.359115][ T3616] [ 50.362030][ T3616] dump_stack_lvl+0xcd/0x134 [ 50.366608][ T3616] panic+0x2d7/0x64a [ 50.370488][ T3616] ? panic_print_sys_info.part.0+0x10b/0x10b [ 50.376466][ T3616] ? preempt_schedule_common+0x59/0xc0 [ 50.381918][ T3616] ? free_netdev+0x58c/0x620 [ 50.386491][ T3616] ? preempt_schedule_thunk+0x16/0x18 [ 50.391850][ T3616] ? free_netdev+0x58c/0x620 [ 50.396496][ T3616] end_report.part.0+0x3f/0x7c [ 50.401254][ T3616] kasan_report.cold+0x93/0x1c6 [ 50.406096][ T3616] ? free_netdev+0x58c/0x620 [ 50.410669][ T3616] free_netdev+0x58c/0x620 [ 50.415068][ T3616] netdev_run_todo+0xb18/0x10b0 [ 50.419902][ T3616] ? mutex_lock_io_nested+0x1190/0x1190 [ 50.425431][ T3616] ? generic_xdp_install+0x4a0/0x4a0 [ 50.430697][ T3616] ? rtnetlink_rcv_msg+0x3af/0xc90 [ 50.435792][ T3616] ? lock_downgrade+0x6e0/0x6e0 [ 50.440628][ T3616] ? bpf_lsm_capable+0x5/0x10 [ 50.445290][ T3616] ? rtnl_dellinkprop+0x50/0x50 [ 50.450140][ T3616] rtnetlink_rcv_msg+0x447/0xc90 [ 50.455063][ T3616] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 50.459819][ T3616] netlink_rcv_skb+0x153/0x420 [ 50.464575][ T3616] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 50.469325][ T3616] ? netlink_ack+0xa80/0xa80 [ 50.473904][ T3616] ? netlink_deliver_tap+0x1a2/0xc40 [ 50.479175][ T3616] ? netlink_deliver_tap+0x1b1/0xc40 [ 50.484442][ T3616] netlink_unicast+0x543/0x7f0 [ 50.489189][ T3616] ? netlink_attachskb+0x880/0x880 [ 50.494282][ T3616] ? __virt_addr_valid+0x5d/0x2d0 [ 50.499291][ T3616] ? __phys_addr_symbol+0x2c/0x70 [ 50.504300][ T3616] ? __check_object_size+0x2de/0x700 [ 50.509569][ T3616] netlink_sendmsg+0x917/0xe10 [ 50.514317][ T3616] ? netlink_unicast+0x7f0/0x7f0 [ 50.519237][ T3616] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 50.524505][ T3616] ? netlink_unicast+0x7f0/0x7f0 [ 50.529424][ T3616] sock_sendmsg+0xcf/0x120 [ 50.533832][ T3616] ____sys_sendmsg+0x6eb/0x810 [ 50.538580][ T3616] ? kernel_sendmsg+0x50/0x50 [ 50.543240][ T3616] ? do_recvmmsg+0x6d0/0x6d0 [ 50.547824][ T3616] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 50.553803][ T3616] ? lockdep_hardirqs_on+0x79/0x100 [ 50.558998][ T3616] ___sys_sendmsg+0xf3/0x170 [ 50.563581][ T3616] ? sendmsg_copy_msghdr+0x160/0x160 [ 50.568863][ T3616] ? __fget_files+0x248/0x440 [ 50.573525][ T3616] ? lock_downgrade+0x6e0/0x6e0 [ 50.578363][ T3616] ? ptrace_stop.part.0+0x5ec/0xa80 [ 50.583546][ T3616] ? __fget_files+0x26a/0x440 [ 50.588210][ T3616] ? __fget_light+0xe5/0x270 [ 50.592802][ T3616] __x64_sys_sendmsg+0x132/0x220 [ 50.597722][ T3616] ? __sys_sendmsg+0x1b0/0x1b0 [ 50.602486][ T3616] ? _raw_spin_unlock_irq+0x2a/0x40 [ 50.607667][ T3616] ? ptrace_notify+0xfa/0x140 [ 50.612328][ T3616] do_syscall_64+0x35/0xb0 [ 50.616730][ T3616] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 50.622607][ T3616] RIP: 0033:0x7f312a93ceb9 [ 50.627007][ T3616] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 18 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 b8 ff ff ff f7 d8 64 89 01 48 [ 50.646606][ T3616] RSP: 002b:00007f312a8e6208 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 50.655001][ T3616] RAX: ffffffffffffffda RBX: 00007f312a9be408 RCX: 00007f312a93ceb9 [ 50.662953][ T3616] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004 [ 50.670903][ T3616] RBP: 00007f312a9be400 R08: 0000000000000000 R09: 0000000000000000 [ 50.678859][ T3616] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f312a9be40c [ 50.686810][ T3616] R13: 00007ffe8081178f R14: 00007f312a8e6300 R15: 0000000000022000 [ 50.694768][ T3616] [ 50.697942][ T3616] Kernel Offset: disabled [ 50.702259][ T3616] Rebooting in 86400 seconds..