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rds: rds_rm_zerocopy_callback() use list_first_entry() 

[ Upstream commit f753a68980 ]

rds_rm_zerocopy_callback() uses list_entry() on the head of a list
causing a type confusion.
Use list_first_entry() to actually access the first element of the
rs_zcookie_queue list.

Fixes: 9426bbc6de ("rds: use list structure to track information for zerocopy completion notification")
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Pietro Borrello <borrello@diag.uniroma1.it>
Link: https://lore.kernel.org/r/20230202-rds-zerocopy-v3-1-83b0df974f9a@diag.uniroma1.it
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Pietro Borrello 2023-02-07 18:26:34 +00:00 committed by Greg Kroah-Hartman
parent da32c2d9f6
commit 1d52bbfd46
1 changed files with 3 additions and 3 deletions
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6
net/rds/message.c
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@ -104,9 +104,9 @@ static void rds_rm_zerocopy_callback(struct rds_sock *rs,
spin_lock_irqsave(&q->lock, flags);
head = &q->zcookie_head;
if (!list_empty(head)) {
info = list_entry(head, struct rds_msg_zcopy_info,
rs_zcookie_next);
if (info && rds_zcookie_add(info, cookie)) {
info = list_first_entry(head, struct rds_msg_zcopy_info,
rs_zcookie_next);
if (rds_zcookie_add(info, cookie)) {
spin_unlock_irqrestore(&q->lock, flags);
kfree(rds_info_from_znotifier(znotif));
/* caller invokes rds_wake_sk_sleep() */