[PATCH] udp: fix possible seqlock deadlock

[Eric Dumazet]

From: Eric Dumazet <edumazet@xxxxxxxxxx>

In commit c9e9042994d3 ("ipv4: fix possible seqlock deadlock") I left
another spot where IP_INC_STATS_BH() was improperly used.

udp_sendmsg() is called from process context, not from softirq context.

This was detected by lockdep seqlock support.

Reported-by: jongman heo <jongman.heo@xxxxxxxxxxx>
Fixes: 584bdf8cbdf6 ("[IPV4]: Fix "ipOutNoRoutes" counter error for TCP and UDP")
Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Cc: Hannes Frederic Sowa <hannes@xxxxxxxxxxxxxxxxxxx>
---
 net/ipv4/udp.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 44dfaa09b584..44e3884f9e4c 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -999,7 +999,7 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 			err = PTR_ERR(rt);
 			rt = NULL;
 			if (err == -ENETUNREACH)
-				IP_INC_STATS_BH(net, IPSTATS_MIB_OUTNOROUTES);
+				IP_INC_STATS(net, IPSTATS_MIB_OUTNOROUTES);
 			goto out;
 		}
 


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