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 5222E25FA13; Tue, 8 Apr 2025 11:39:51 +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=1744112391; cv=none; b=eJ+sIE31TKejIZugRLwdvYZAGeJ+4Le0Bn/Og5eo1PpCWiELVdNdWLgC+EBgXGWrK9fU5sOsEjYrNFmiKyqhvxbVmG3NLyj4Trgctg2Thu4OPcIGy+MS2l05CbPtDh07j4weM6gHlUz9S8KAuW2x6jxIzZ4NsX07miF7bEywoyk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744112391; c=relaxed/simple; bh=TSsk73M2t67QPCzE5b79J/Se10U7nBdUJplbEK2vjH8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=G2Wu2/TN5leAnqwMvM55SnXCFqSZG+fHCJUdqlG2b0J2o4jxrIOiXCggAU6u8fRL4OIAPE6+y40pWbU8gF5ld2DWgv4mWCfp9A6RBc3NmkwDSbc176uBV8ZGDbMbWItsW/iVmtjPW9duHtckVAsDcp8xH5xo1OyFuyZXnypr38U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Xq9/B/1T; 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="Xq9/B/1T" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CF875C4CEE5; Tue, 8 Apr 2025 11:39:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1744112391; bh=TSsk73M2t67QPCzE5b79J/Se10U7nBdUJplbEK2vjH8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Xq9/B/1Thw3IwO/ipnTDvrVzs3m9TTyFXpImSRrTsSIttyhSsl9qyoMTxqapJ8apQ uTrEDmfREixCyPq3DmaNL9pSXWDK+mFOzYWPyVIHXKKuA3y/9/EethwXNYWclaPCm1 5PCqZO5pNBWZS9mmkngAozsmHz5BBQbM07cIptYA= 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 5.15 052/279] block: fix kmem_cache of name bio-108 already exists Date: Tue, 8 Apr 2025 12:47:15 +0200 Message-ID: <20250408104827.767593358@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250408104826.319283234@linuxfoundation.org> References: <20250408104826.319283234@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 5.15-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 92399883bc5e1..029dba492ac2d 100644 --- a/block/bio.c +++ b/block/bio.c @@ -73,7 +73,7 @@ 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