From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 AA0295867EA; Wed, 9 Sep 2026 14:32:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788964354; cv=none; b=Jc5rSlk7AazWP3P61IPJNVCJbC7ZTq0pWOH8gfHam6e0VfGY/m5DGtcBhGtjqM08AM4Lc6M1FwxiPcwqUhI+Ha1rTByJ6s+ZnxuMP0EkPKgWwag7hNhoAvBXpmPJgYKGZXIVXr65mz5o0zWBlFUaf+TLoqmV9CFYD0rC5c6Q6kQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788964354; c=relaxed/simple; bh=ofpNZmpDXQft2ZC712X1Yu7x7vJXttnirE7Sea6DKYc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rzpyRbUGPsGCGp/7LuhLXfBVgYnGDtbA1BIQp8jUVwrBWdJ7RGR5Da77L34AGnIvMukgPxCRFhuVWcGjEWeI5aobj6jd+zXhG1yiRc9Fnw0E4HmOY23ymQJccEzKiKIZfEenCtuFhsOAP44fzMIxy24pmMkMuv1bbs+PzLTcgWg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=J1SITedZ; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="J1SITedZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ACF171F00A3E; Wed, 9 Sep 2026 14:32:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788964353; bh=YfqTlZGdDuOvVJDT8vDGEA7ZuTyOdl5++S8DuiNAiJs=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=J1SITedZIGhtyhLm7B+9KUTIuUzz0ybrXZ8s7/YO2rRfhN2Yyf2WPx4iKK+pSFYN+ JBFwqJGvAbJrD876sQUURZ7Iw2BuohmVQ1iBRwUDhCtHwRjtoUY7FD+MSLYdnVrTQh CYTvFwEbFMJfMRASVHK6/tdZE9wqDufrrcQqsU0k= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Daeho Jeong , Sunmin Jeong , Chao Yu , Jaegeuk Kim Subject: [PATCH 6.18 361/583] f2fs: fix to migrate all curseg types during free_segment_range Date: Wed, 9 Sep 2026 15:40:46 +0200 Message-ID: <20260909134250.504980332@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260909134237.773280130@linuxfoundation.org> References: <20260909134237.773280130@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Daeho Jeong commit 8ec06f50ddd8d201bd7e55b896ae28ed9d4cb7d1 upstream. In free_segment_range(), the curseg evacuation loop only iterates up to NR_CURSEG_PERSIST_TYPE (0..5), missing non-persistent in-memory curseg types such as CURSEG_COLD_DATA_PINNED and CURSEG_ALL_DATA_ATGC. Even though these in-memory curseg types are not saved in the on-disk checkpoint header, they still occupy active physical segments at runtime. If an active in-memory curseg happens to be allocated within the segment range being truncated during filesystem shrink, failing to evacuate it will cause subsequent writes to the curseg attempting out-of-bounds I/O on the truncated storage range. Fix this by expanding the curseg evacuation loop upper bound to NR_CURSEG_TYPE to ensure all active curseg types are safely migrated out of the target range. Fixes: d0b9e42ab615 ("f2fs: introduce inmem curseg") Cc: stable@vger.kernel.org Signed-off-by: Daeho Jeong Signed-off-by: Sunmin Jeong Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Greg Kroah-Hartman --- fs/f2fs/gc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -2192,7 +2192,7 @@ static int free_segment_range(struct f2f mutex_unlock(&DIRTY_I(sbi)->seglist_lock); /* Move out cursegs from the target range */ - for (type = CURSEG_HOT_DATA; type < NR_CURSEG_PERSIST_TYPE; type++) { + for (type = CURSEG_HOT_DATA; type < NR_CURSEG_TYPE; type++) { err = f2fs_allocate_segment_for_resize(sbi, type, start, end); if (err) goto out;