Re: [PATCH] rxrpc: recvmsg: use BUG_ON instead of if condition followed by BUG
From: Tom Herbert <hidden>
Date: 2017-10-25 01:41:03
Also in:
lkml
Please combine these related patches fixing BUG in rxrpc into a patch set with proper annotation, Also, can any of these BUG_ONs be replaced by WARN_ONs? Warnings are generally preferable to crashing the system. Tom On Tue, Oct 24, 2017 at 9:20 AM, Gustavo A. R. Silva [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Use BUG_ON instead of if condition followed by BUG. This issue was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <redacted> --- net/rxrpc/recvmsg.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)diff --git a/net/rxrpc/recvmsg.c b/net/rxrpc/recvmsg.c index bdece21..9598b92 100644 --- a/net/rxrpc/recvmsg.c +++ b/net/rxrpc/recvmsg.c@@ -243,8 +243,7 @@ static int rxrpc_verify_packet(struct rxrpc_call *call, struct sk_buff *skb, */ if ((annotation & RXRPC_RX_ANNO_JUMBO) > 1) { __be16 tmp; - if (skb_copy_bits(skb, offset - 2, &tmp, 2) < 0) - BUG(); + BUG_ON(skb_copy_bits(skb, offset - 2, &tmp, 2) < 0); cksum = ntohs(tmp); seq += (annotation & RXRPC_RX_ANNO_JUMBO) - 1; }@@ -503,8 +502,7 @@ int rxrpc_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, release_sock(&rx->sk); - if (test_bit(RXRPC_CALL_RELEASED, &call->flags)) - BUG(); + BUG_ON(test_bit(RXRPC_CALL_RELEASED, &call->flags)); if (test_bit(RXRPC_CALL_HAS_USERID, &call->flags)) { if (flags & MSG_CMSG_COMPAT) { --2.7.4