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authorGustavo A. R. Silva <garsilva@embeddedor.com>2017-11-28 20:28:52 +0300
committerDavid Howells <dhowells@redhat.com>2017-11-29 17:44:22 +0300
commit282ef4729195c8503f7101d574acfb5e7c8a8209 (patch)
tree3fb0133ea601ed5a3f97f1fbaec0f5f72a70c1ff /net
parent5fc62f6a139a7b06b027bf442cd4205619506f59 (diff)
downloadlinux-282ef4729195c8503f7101d574acfb5e7c8a8209.tar.xz
rxrpc: Fix variable overwrite
Values assigned to both variable resend_at and ack_at are overwritten before they can be used. The correct fix here is to add 'now' to the previously computed value in resend_at and ack_at. Addresses-Coverity-ID: 1462262 Addresses-Coverity-ID: 1462263 Addresses-Coverity-ID: 1462264 Fixes: beb8e5e4f38c ("rxrpc: Express protocol timeouts in terms of RTT") Link: https://marc.info/?i=17004.1511808959%40warthog.procyon.org.uk Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net')
-rw-r--r--net/rxrpc/call_event.c2
-rw-r--r--net/rxrpc/sendmsg.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/net/rxrpc/call_event.c b/net/rxrpc/call_event.c
index 555274ddc514..ad2ab1103189 100644
--- a/net/rxrpc/call_event.c
+++ b/net/rxrpc/call_event.c
@@ -123,7 +123,7 @@ static void __rxrpc_propose_ACK(struct rxrpc_call *call, u8 ack_reason,
else
ack_at = expiry;
- ack_at = jiffies + expiry;
+ ack_at += now;
if (time_before(ack_at, call->ack_at)) {
WRITE_ONCE(call->ack_at, ack_at);
rxrpc_reduce_call_timer(call, ack_at, now,
diff --git a/net/rxrpc/sendmsg.c b/net/rxrpc/sendmsg.c
index a1c53ac066a1..09f2a3e05221 100644
--- a/net/rxrpc/sendmsg.c
+++ b/net/rxrpc/sendmsg.c
@@ -233,7 +233,7 @@ static void rxrpc_queue_packet(struct rxrpc_sock *rx, struct rxrpc_call *call,
if (resend_at < 1)
resend_at = 1;
- resend_at = now + rxrpc_resend_timeout;
+ resend_at += now;
WRITE_ONCE(call->resend_at, resend_at);
rxrpc_reduce_call_timer(call, resend_at, now,
rxrpc_timer_set_for_send);