This is a note to let you know that I've just added the patch titled xen-netback: correct success/error reporting for the SKB-with-fraglist case to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: xen-netback-correct-success-error-reporting-for-the-.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit a2fd367d249313603576f6752de8087187faf63d Author: Jan Beulich <jbeulich@xxxxxxxx> Date: Fri Sep 17 08:27:10 2021 +0200 xen-netback: correct success/error reporting for the SKB-with-fraglist case [ Upstream commit 3ede7f84c7c21f93c5eac611d60eba3f2c765e0f ] When re-entering the main loop of xenvif_tx_check_gop() a 2nd time, the special considerations for the head of the SKB no longer apply. Don't mistakenly report ERROR to the frontend for the first entry in the list, even if - from all I can tell - this shouldn't matter much as the overall transmit will need to be considered failed anyway. Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> Reviewed-by: Paul Durrant <paul@xxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index c213f2b81269..995566a2785f 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -492,7 +492,7 @@ check_frags: * the header's copy failed, and they are * sharing a slot, send an error */ - if (i == 0 && sharedslot) + if (i == 0 && !first_shinfo && sharedslot) xenvif_idx_release(queue, pending_idx, XEN_NETIF_RSP_ERROR); else