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 061BB47A0C3; Sat, 12 Sep 2026 11:56:52 +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=1789214213; cv=none; b=YDl3NQhcgLr8cDUkPAjpFs71zMbGYbVrpJkSGaF3tDdlykqcVI22yFEb5vU3HyP9igMuGoO/SHWPduixHQWDvadA/AJ4xrSoQfoNnTLtQ/EIIvrbAjBE6LmHL+Po7pPdy9CH/b8Lwv8HOz69JrloOVyfV7ZEDJ/mpoFfydkONXI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789214213; c=relaxed/simple; bh=E7MaoLy54svGXBXyUrTlUk40rFwo70gtydvl+I/2scc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lqwENGaX1darEfV+EmJDwCb8CvVS4u4LK1qz/Q0BRqPxC05acbI5tnHPot0wE/QKHyAekJTxYCbfVl9S3CeX9YurhEd2tL87t0DQmUA33EXF4uBQCqheMiamJJQaRxkQaJoxhkbcwvL52RkJwEckNZ8TzbwJh1RjTuLXKcA7nrE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=QdDngwcf; 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="QdDngwcf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E206E1F000FF; Sat, 12 Sep 2026 11:56:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789214211; bh=vB4vGL9f5oHfo07TqEpxoV86Unbh/l5V1OF9+6m2KY4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=QdDngwcf45w8tnDwR51qqxS9EfyUABnhkYdXFnFFu1sdG4ZV1YvgO2PCxe2Ke33mG EXIe5siZTS0q2qii67LvDU+k6cfOWSz7YqHIMrcf6Xm6cIhsvRkrq4wvVLkLCG8MtP MH6wkpsdr6nO2h9ML4nh7FmTURoY/WzDmABa2tXE= 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 6.12 0253/1376] f2fs: fix to migrate all curseg types during free_segment_range Date: Sat, 12 Sep 2026 08:44:39 +0200 Message-ID: <20260912065613.178670335@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065607.535295758@linuxfoundation.org> References: <20260912065607.535295758@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 6.12-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 @@ -2171,7 +2171,7 @@ 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;