From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794272913; b=RI4u4lVfpuA/XT9IdUAvcjqbgkAjyR+6qd3OGgzOEzPWzsF+pp2kfE7yZqO6OcAJbPkD GbirxlkEXBDlpu8Acs+JeALQQrtRtX0Y8ouQBLSAuqQR3BnZ/wXMTo2tV/r7FSR41ygUd VA4Xm6s7M472VH+0gWypCzcz4ACEqu9+1DM6ayziMEb34ofaxhMkCfM0i3mhXEtGli1Ru oa9/OoTmtCCFybrH8ed6HEdex7ls8NX29cg6Le8Jok3rSoOyUoB/TNs9PApc9wiJoABZg ZMJDQd1CGfcf32xPt8xj62/htmNpnr8AwPorffI5MJzQrbrr8NlLudqMAd7RnnGrlSA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794272913; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: MIME-Version:Content-Type:Content-Transfer-Encoding; bh=MWRKr4nzDldi8z7hxmNzG3wGoOFDcoV5YnkJTyNuGew=; b=Ace2JX9GdZsODtysTLgMDthfcGjmkHo4Z72URdr4dgxsXrNzv4ehI7svM7dwFbjICcMj dmQHjLXe0FSYesatEbxvWYub2sswiESeyNyhQCYwBSw1iRcGs1XZO0k9xlUD7iE1OlhGf CQ3LguGvhMc+UI4bFezJIrDQF45QTTPXCTxMSFHoIwjdKkJ6gSXZAGB5ZoF730nVpdncU V00cpJARy0burEzI6HnATTzO7HWn4uk14rbEo9bC0D9g28nielbHJIYqdF6TwB8QqeGfk WdH7ERMDShOOtVAiWjtUQv9N60r8jxwZeod/6ZLLbpgSj1ZWQHPlkzYkz8fFY2/pJ/A== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=lU8FiFHV; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3AFE6606A325 for ; Tue, 10 Nov 2026 01:08:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=lU8FiFHV Received: by smtp.kernel.org (Postfix) with ESMTPSA id 48D061F0089F; Tue, 10 Nov 2026 01:08:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794272912; bh=MWRKr4nzDldi8z7hxmNzG3wGoOFDcoV5YnkJTyNuGew=; h=From:To:Cc:Subject:Date; b=lU8FiFHVDm5iIwR6Hv5/PMaQgpfyvQUzmVReXmwa8vWlwEM9DmYxcMNMJR6Cqt4Wd WFFeD6p9vLFlgih/pdIMotXTRG+f5yr92GAuhC4V1quTzUXwkD1ekEPnDnJ7MtZYub h/Opz+MJsutXBO/XOyaOov8olaJsQTnNbK4E7LDvY4r/8bJ1zgA3gVX+SiwJqoSBbx +dw36UYiJXTgUGQoMgZ9P2ihFMAoqPWAPFGKnX2j0j+faI2REV6LihsXwVFTWBxQBP hxqez9ABQWm6TTVwrst8tB0dPvt9L62Fi2Tn3rBu4fX2Rnq06A4LIS48VCdzgXUDmQ 7yPmNmjPAPdOQ== From: Sasha Levin To: josef@toxicpanda.com, ebiggers@kernel.org, hch@lst.de, axboe@kernel.dk Cc: stable@vger.kernel.org Subject: FAILED: patch "[PATCH] blk-mq: end the request if getting a keyslot fails" failed to apply to 6.12-stable tree Date: Mon, 9 Nov 2026 20:08:31 -0500 Message-ID: <20261109200831-failed-6.12-e67cb6ed40e7@kernel.org> X-Mailer: git-send-email 2.53.0 X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x e67cb6ed40e7f45912b63d7d575f18dfd2ebc98a # git commit -s git send-email --to '' --in-reply-to '20261109200831-failed-6.12-e67cb6ed40e7@kernel.org' --subject-prefix 'PATCH 6.12.y' 'HEAD^..' Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From e67cb6ed40e7f45912b63d7d575f18dfd2ebc98a Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Thu, 29 Oct 2026 20:01:10 +0000 Subject: [PATCH] blk-mq: end the request if getting a keyslot fails When blk_crypto_rq_get_keyslot() fails, blk_mq_submit_bio() ends the bio by hand and frees the request. By then blk_mq_bio_to_request() has done the IO accounting, which blk_mq_free_request() doesn't undo, so the in_flight counter never drops and iostat shows a device that is 100% busy. If the bio went through zone write plugging the zone stays plugged as well, and every later write to it waits forever. Use blk_mq_end_request() like the dispatch path does for a request the driver rejected, after marking it for zone write plugging. Move the call to blk_zone_write_plug_init_request() before blk_crypto_rq_get_keyslot() so that it doesn't need to be duplicated. It doesn't depend on the keyslot. Fixes: 99dc422335d8 ("block: support to account io_ticks precisely") Fixes: dd291d77cc90 ("block: Introduce zone write plugging") Cc: stable@vger.kernel.org Signed-off-by: Josef Bacik Signed-off-by: Eric Biggers Reviewed-by: Christoph Hellwig Link: https://patch.msgid.link/20261029200110.1328103-1-ebiggers@kernel.org Signed-off-by: Jens Axboe --- block/blk-mq.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index d9ab295be4d92..e5b9898cede98 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -3209,16 +3209,15 @@ void blk_mq_submit_bio(struct bio *bio) blk_mq_bio_to_request(rq, bio, nr_segs); + if (bio_zone_write_plugging(bio)) + blk_zone_write_plug_init_request(rq); + ret = blk_crypto_rq_get_keyslot(rq); if (ret != BLK_STS_OK) { - bio_endio_status(bio, ret); - blk_mq_free_request(rq); + blk_mq_end_request(rq, ret); return; } - if (bio_zone_write_plugging(bio)) - blk_zone_write_plug_init_request(rq); - if (op_is_flush(bio->bi_opf) && blk_insert_flush(rq)) return; -- 2.53.0