From: Vinay Kumar Yadav vinay.yadav@chelsio.com
[ Upstream commit 8080b462b6aa856ae05ea010441a702599e579f2 ]
race between user context and softirq causing memleak, consider the call sequence scenario
chtls_setkey() //user context chtls_peer_close() chtls_abort_req_rss() chtls_setkey() //user context
work request skb queued in chtls_setkey() won't be freed because resources are already cleaned for this connection, fix it by not queuing work request while socket is closing.
v1->v2: - fix W=1 warning.
v2->v3: - separate it out from another memleak fix.
Fixes: cc35c88ae4db ("crypto : chtls - CPL handler definition") Signed-off-by: Vinay Kumar Yadav vinay.yadav@chelsio.com Link: https://lore.kernel.org/r/20201102173650.24754-1-vinay.yadav@chelsio.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/crypto/chelsio/chtls/chtls_hw.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/crypto/chelsio/chtls/chtls_hw.c +++ b/drivers/crypto/chelsio/chtls/chtls_hw.c @@ -383,6 +383,9 @@ int chtls_setkey(struct chtls_sock *csk, if (ret) goto out_notcb;
+ if (unlikely(csk_flag(sk, CSK_ABORT_SHUTDOWN))) + goto out_notcb; + set_wr_txq(skb, CPL_PRIORITY_DATA, csk->tlshws.txqid); csk->wr_credits -= DIV_ROUND_UP(len, 16); csk->wr_unacked += DIV_ROUND_UP(len, 16);