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charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.9.3 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240605_044950_420098_B73F9FBC X-CRM114-Status: GOOD ( 11.38 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Jaegeuk Kim [ Upstream commit 3bdb7f161697e2d5123b89fe1778ef17a44858e7 ] Shutdown does not check the error of thaw_super due to readonly, which causes a deadlock like below. f2fs_ioc_shutdown(F2FS_GOING_DOWN_FULLSYNC) issue_discard_thread - bdev_freeze - freeze_super - f2fs_stop_checkpoint() - f2fs_handle_critical_error - sb_start_write - set RO - waiting - bdev_thaw - thaw_super_locked - return -EINVAL, if sb_rdonly() - f2fs_stop_discard_thread -> wait for kthread_stop(discard_thread); Reported-by: "Light Hsieh (謝明燈)" Reviewed-by: Daeho Jeong Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Sasha Levin --- fs/f2fs/super.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index e4c795a711f0f..2f75a7dfc311d 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -4129,9 +4129,15 @@ void f2fs_handle_critical_error(struct f2fs_sb_info *sbi, unsigned char reason, if (shutdown) set_sbi_flag(sbi, SBI_IS_SHUTDOWN); - /* continue filesystem operators if errors=continue */ - if (continue_fs || f2fs_readonly(sb)) + /* + * Continue filesystem operators if errors=continue. Should not set + * RO by shutdown, since RO bypasses thaw_super which can hang the + * system. + */ + if (continue_fs || f2fs_readonly(sb) || shutdown) { + f2fs_warn(sbi, "Stopped filesystem due to reason: %d", reason); return; + } f2fs_warn(sbi, "Remounting filesystem read-only"); /* -- 2.43.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CCE4AC25B76 for ; Wed, 5 Jun 2024 11:50:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Wed, 5 Jun 2024 11:49:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1717588188; bh=YXLht4DMVx9D4bBLqSYfEGN9zRr4REGZhY2ixp5EipA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QQupnB3Hf1a2wkwqP6i9Dj8ZKVYPlgB6t5QdZrMVpGa2i29e98edU/Ojt1c0XBkWr DriPAFvLdXG13ib3DGFjVM07f3pSpil0Wzv8INE202/t0mq6oeG2aZ/aJHv4gsTLTW fXJEsZn1Og/6c/vKis3jJoorsOOY3e+/AOWpk3ox6oK9QkRW3oln5ur4AHVQwF1/l5 111HpOZILKnYgVbl/squlMHPVEyGWm7zov+s8xlzw+G9TROF7UbD4G0vnIx5ovsvov jetUcQ+QF24o7GQAcV55Hf2cHiRCsblK1VIrb4o1bmqQpVD2yQIePF2NYYiUdFDvyX wG1XsRLdOkjsg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jaegeuk Kim , =?UTF-8?q?Light=20Hsieh=20=28=E8=AC=9D=E6=98=8E=E7=87=88=29?= , Daeho Jeong , Chao Yu , Sasha Levin , matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, linux-f2fs-devel@lists.sourceforge.net, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH AUTOSEL 6.9 11/28] f2fs: don't set RO when shutting down f2fs Date: Wed, 5 Jun 2024 07:48:40 -0400 Message-ID: <20240605114927.2961639-11-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240605114927.2961639-1-sashal@kernel.org> References: <20240605114927.2961639-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.9.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240605_044950_420098_B73F9FBC X-CRM114-Status: GOOD ( 11.38 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; 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