From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 453CF1DB15C; Wed, 19 Mar 2025 14:35:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742394935; cv=none; b=oogdIrfw3nq9dLouRUN0zQao01xWzzMJvW9S740tSBSx2/BXMmb3Z7LTxWspxFgviBCQmE9Qh0LJ4lUElPNs05Gwjh+dyEcnF8JFDPFrR+i5zMW9B/VtHLtDWc+ulzPhcbuf7f3sI9vYwXXrA2FtMDnynGhsceJy1tNcAU9HyCo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742394935; c=relaxed/simple; bh=XNS5jSISiRUURaKPBWlQcF9K1lNWgXfVy4BldSO8Nfs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pKIg1LgblgLCPZlGjnLIGyIuzpscbmI13t+SwYKGp/hmDUZQzu9YHTVOhSJN1i4zOjB4Dh5xdn/fTa9Qum1AkS6T8XsQXT5xdHz1W6HJ8/oEqJGpgVolSnuJhXr+BcnrqGo+d2fiWkuAdRvFMwFEw9RlaPDevyrgHKuhoQQlTfg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=I7KejjJz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="I7KejjJz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A9914C4CEE4; Wed, 19 Mar 2025 14:35:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1742394933; bh=XNS5jSISiRUURaKPBWlQcF9K1lNWgXfVy4BldSO8Nfs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=I7KejjJzGGI3ZV7zwY8ngkHIIJduuyE9l9oKjXC/r0dBYBUx8SFrbUOBTO695wk0W q89RYAkO6w1M8KOSLzG9deeyvvF+SpirFMPfkZy/2mCgOSQE5jWk5ZC/OMUQtu15H5 pua9pNxra1sdmCoYicEnTtGpeK+LRMbS5UfVUasU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Guangwu Zhang , Ming Lei , Jens Axboe , Sasha Levin Subject: [PATCH 6.13 148/241] block: fix kmem_cache of name bio-108 already exists Date: Wed, 19 Mar 2025 07:30:18 -0700 Message-ID: <20250319143031.377190648@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250319143027.685727358@linuxfoundation.org> References: <20250319143027.685727358@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.13-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ming Lei [ Upstream commit b654f7a51ffb386131de42aa98ed831f8c126546 ] Device mapper bioset often has big bio_slab size, which can be more than 1000, then 8byte can't hold the slab name any more, cause the kmem_cache allocation warning of 'kmem_cache of name 'bio-108' already exists'. Fix the warning by extending bio_slab->name to 12 bytes, but fix output of /proc/slabinfo Reported-by: Guangwu Zhang Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20250228132656.2838008-1-ming.lei@redhat.com Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- block/bio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/bio.c b/block/bio.c index d5bdc31d88d32..f54e8572affc1 100644 --- a/block/bio.c +++ b/block/bio.c @@ -77,7 +77,7 @@ struct bio_slab { struct kmem_cache *slab; unsigned int slab_ref; unsigned int slab_size; - char name[8]; + char name[12]; }; static DEFINE_MUTEX(bio_slab_lock); static DEFINE_XARRAY(bio_slabs); -- 2.39.5