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netfilter: nf_tables: fail batch if fatal signal is pending

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abort batch processing and return so task can exit faster.
Otherwise even SIGKILL has no immediate effect.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal 2018-05-27 11:24:34 +02:00 committed by Pablo Neira Ayuso
parent d6501de872
commit 8a3d4c3612
1 changed files with 8 additions and 0 deletions
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8
net/netfilter/nfnetlink.c
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@ -25,6 +25,7 @@
#include <linux/uaccess.h>
#include <net/sock.h>
#include <linux/init.h>
#include <linux/sched/signal.h>
#include <net/netlink.h>
#include <linux/netfilter/nfnetlink.h>
@ -330,6 +331,13 @@ replay:
while (skb->len >= nlmsg_total_size(0)) {
int msglen, type;
if (fatal_signal_pending(current)) {
nfnl_err_reset(&err_list);
err = -EINTR;
status = NFNL_BATCH_FAILURE;
goto done;
}
memset(&extack, 0, sizeof(extack));
nlh = nlmsg_hdr(skb);
err = 0;