diff mbox series

[3/3] rxrpc: Fix _usecs_to_jiffies() by using usecs_to_jiffies()

Message ID 1632453517-782538-1-git-send-email-jiasheng@iscas.ac.cn (mailing list archive)
State Accepted
Delegated to: Netdev Maintainers
Headers show
Series None | expand

Commit Message

Jiasheng Jiang Sept. 24, 2021, 3:18 a.m. UTC
Directly using _usecs_to_jiffies() might be unsafe, so it's
better to use usecs_to_jiffies() instead.
Because we can see that the result of _usecs_to_jiffies()
could be larger than MAX_JIFFY_OFFSET values without the
check of the input.

Fixes: c410bf01933e ("Fix the excessive initial retransmission timeout")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
---
 net/rxrpc/rtt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/rxrpc/rtt.c b/net/rxrpc/rtt.c
index 4e565ee..be61d6f 100644
--- a/net/rxrpc/rtt.c
+++ b/net/rxrpc/rtt.c
@@ -22,7 +22,7 @@  static u32 rxrpc_rto_min_us(struct rxrpc_peer *peer)
 
 static u32 __rxrpc_set_rto(const struct rxrpc_peer *peer)
 {
-	return _usecs_to_jiffies((peer->srtt_us >> 3) + peer->rttvar_us);
+	return usecs_to_jiffies((peer->srtt_us >> 3) + peer->rttvar_us);
 }
 
 static u32 rxrpc_bound_rto(u32 rto)