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 6DE2737A498 for ; Sat, 12 Sep 2026 11:21:27 +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=1789212088; cv=none; b=Oo9rMTt27V5uDIn/MUn/Xy6iQx+2rIhvwNXFZ+V1+u6l+UTCCUvr2eS2o3CxEfJYRKsEFNHw58oJze+yBvw0On1vDRw1n2YoQjLCLNRAv5L7QXlkjecbq0ZwABYUMo4ksteDmFpVhR7vUd4H5Ec5yF/cSs8U2gPGz81N/jhfy0Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789212088; c=relaxed/simple; bh=ifiXzJsJZ6dkGXysA/iuFzDzvzdnHyok2r5J+063ueQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Ohd4mVagcJ0nj49CiJS+kjz06TyGvSQKJBNqsy5e3CQ/+urMD4Wn7nkd061+RlrE3xkegC83IXfPsNwra5lstjVq4SZ0B8G3g5ODYr0jYb9Qw4KBVjCLljnyt4i5Xk73yZSHaz8VfuTO7KQNo6745LsTcWr25FFihw1j4FWmLvM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Ux1oHJDG; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Ux1oHJDG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 74EB81F0089B; Sat, 12 Sep 2026 11:21:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789212087; bh=GNDmbIu4+PNBwM+6EJXbV2E232Pps/aHoCSkV9O4iGA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Ux1oHJDGFqwUvkC984wDEO4ktW2mQtWymKbjG16FqHhdo5Kr/zVgwXRiWlL9O5zgy hA5ec2ilm+e0XBjoHECeS06L9Gyww7aAvtbpBjAoHeDhGlUnRJKReCVc/GeudBeyL5 QwnNQ+eCCQ2vqFxejtTSO7MTFQ7uitJ0868p1rdOSaIt8EroKl+EfsjsrXqA/qmBez ULvAukfz4R265tVA8SzsgfZs2Os8hm1hJEGjrCQNgtYe8PBYNIjYuOGshpRsHJuwUt LlTL2yAZ6WSAZ+WaXoyJ8MLcwmp+MJ7ImrXh0cermnQlqOiChpVXrOV2n8gh/2XVBX /XP+9OVOz3rdg== From: Sasha Levin To: stable@vger.kernel.org Cc: Daeho Jeong , Sunmin Jeong , Chao Yu , Jaegeuk Kim , Sasha Levin Subject: [PATCH 5.10.y 3/3] f2fs: fix to migrate all curseg types during free_segment_range Date: Sat, 12 Sep 2026 07:21:23 -0400 Message-ID: <20260912112123.2312505-3-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260912112123.2312505-1-sashal@kernel.org> References: <2026090947-bankable-stroller-237b@gregkh> <20260912112123.2312505-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Daeho Jeong [ Upstream commit 8ec06f50ddd8d201bd7e55b896ae28ed9d4cb7d1 ] 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: Sasha Levin --- fs/f2fs/gc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 33a2079b77c2b..d090ddc4be755 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -1877,7 +1877,7 @@ static int free_segment_range(struct f2fs_sb_info *sbi, 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; -- 2.53.0