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 4C4F5237180; Mon, 3 Mar 2025 16:30:26 +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=1741019427; cv=none; b=FSxQRl5p00euLqsY6DSaK+a3dWXDIXout8Ml+n7pWVHWjA4xuGEjia6U6en5QuL5LTVpM9A7vDUjL3Prgpkxu9ZtfVt43ZQ0KbovPgD2V6pqjYw3cCNZRjJ/sxexS3RsZ19VAglzfTkoUf8JuCenNYZHi/ES2qZjOrqawEnBIkA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741019427; c=relaxed/simple; bh=D1PfnMHjXec0jX2k9ntUQpXIqwTP3Jt7slxUP3yTq7Q=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=uspCoibGPtwf5rmNvfY+vt1/stpFkBttb8jb5vOWaikPYqJZpk2W6EwzB1XbJXS/Zk7I7QDMmwk03heUh8U7DCgJDk2OtkWLkrWECv7b3tPPrrxjUDh0NZ3fIlEWDeFMepffWF4sMbUVqXT6TfSZX/DS+nz9Um9EUS1TDvDMNyg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=oM0/7ihC; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="oM0/7ihC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C4EB6C4CEEA; Mon, 3 Mar 2025 16:30:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741019426; bh=D1PfnMHjXec0jX2k9ntUQpXIqwTP3Jt7slxUP3yTq7Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oM0/7ihCPplckIQNK/HPNkLF9Cr5e0rYeWO7K4zPshAN2xS4Lv1O/T7hdgHZxEP8b U0IFXNaATqFDrn762IScc5be+so4zsr2/9uTzpFR8B7FGnynz6MWAoytajoSHtgBaK OuEjzHD+POtbS2xRBbi2MXgDpX+7mO6XuvkdjidAYjqaFHGjXxAeZagZaqRuYmRt0v 9FMzRV7G2TcQslovGWSXpMMR56uOIH4P7bSug062S41AzhRHKaclAkUk5gVmeMSvcB R2y3shWZTRDCIfIdOUFUzQo4PehALmdBQrNAHYo1uP/1sSBjRtzx9TCtFOJxl/0Mql VW9YzLCYyTx/g== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ming Lei , Guangwu Zhang , Jens Axboe , Sasha Levin , linux-block@vger.kernel.org Subject: [PATCH AUTOSEL 6.13 16/17] block: fix 'kmem_cache of name 'bio-108' already exists' Date: Mon, 3 Mar 2025 11:29:48 -0500 Message-Id: <20250303162951.3763346-16-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250303162951.3763346-1-sashal@kernel.org> References: <20250303162951.3763346-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.13.5 Content-Transfer-Encoding: 8bit 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