Program received signal SIGSEGV, Segmentation fault.
mnl_socket_close (nl=0x0) at socket.c:248
248 int ret = close(nl->fd);
(gdb) bt
#0 mnl_socket_close (nl=0x0) at socket.c:248
#1 0x0000000000410f79 in netlink_close_sock () at src/netlink.c:45
#2 0x00007ffff7de9fcf in _dl_fini () at dl-fini.c:253
#3 0x00007ffff717fa91 in __run_exit_handlers (status=2, listp=0x7ffff74ec5c8
<__exit_funcs>,
run_list_atexit=run_list_atexit@entry=true) at exit.c:77
#4 0x00007ffff717fb15 in __GI_exit (status=<optimized out>) at exit.c:99
#5 0x0000000000419b60 in memory_allocation_error () at src/utils.c:24
#6 0x0000000000410f3a in netlink_open_sock () at src/netlink.c:37
#7 0x00000000004291cd in __libc_csu_init ()
#8 0x00007ffff7167925 in __libc_start_main (main=0x405219 <main>, argc=1,
ubp_av=0x7fffffffe738, init=0x429170 <__libc_csu_init>, fini=<optimized
out>,
rtld_fini=<optimized out>, stack_end=0x7fffffffe728) at libc-start.c:235
#9 0x0000000000404d49 in _start ()
The include of <nftables.h> is wierd so I can't use NFT_EXIT_NOMEM in this file.
Signed-off-by: Shawn Landden <shawn@xxxxxxxxxxxxxxx>
---
src/netlink.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/netlink.c b/src/netlink.c
index 533634a..5240633 100644
--- a/src/netlink.c
+++ b/src/netlink.c
@@ -33,8 +33,11 @@ static struct mnl_socket *nf_sock;
static void __init netlink_open_sock(void)
{
nf_sock = mnl_socket_open(NETLINK_NETFILTER);
- if (nf_sock == NULL)
+ if (nf_sock == NULL) {
+ dprintf(STDERR_FILENO,
+ "Could not open AF_NETLINK socket: %m\n");
memory_allocation_error();
+ }
fcntl(mnl_socket_get_fd(nf_sock), F_SETFL, O_NONBLOCK);
mnl_batch_init();
@@ -42,7 +45,8 @@ static void __init netlink_open_sock(void)
static void __exit netlink_close_sock(void)
{
- mnl_socket_close(nf_sock);
+ if (nf_sock)
+ mnl_socket_close(nf_sock);
}
int netlink_io_error(struct netlink_ctx *ctx, const struct location *loc,
--
1.8.5.1
--
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