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 2723552B1D4 for ; Wed, 9 Sep 2026 11:44:13 +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=1788954254; cv=none; b=Wqfma0GCIfzUxidKIeuOIaY1m5yNeprw1tukL8BQ1xdR347EbZRwlaXQmxVnbOTFoJaMFnAR8E0QAXU7Hvc9Ht0v7Fa4CdyieliYh0/5/9OVMjULp4PGK2IBHUv7Rblt+P1eemcpdvcMViPcQ77axhE/dmCXIYPY4IkddGFiZqc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788954254; c=relaxed/simple; bh=8ifKmGKLG8iRYi2Jh6KIxnaXOtspWI5x0Ivdg5Jlb+U=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=qCjPGYQ0bUjghOXou+ydhcV2+WcBJkKxM7hcThqPigPdPX8di4W7M/HGhpnA1ThmCpPUfyUH/O12wNj8QwDjZFq//ZjaXjefTKec0p7Ghu4KrADgoFe1dhgSqX0tMZrudwI2DVKBHLwheyob6UTfB9DhFNzEGCrAMTCArKRt1pI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=h0QcRFn3; 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="h0QcRFn3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8393B1F00A3A; Wed, 9 Sep 2026 11:44:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788954253; bh=MCPhP7SjeMN25fNNSVINL1Zo16JR6i1/L8XpJ2YWNr8=; h=Subject:To:Cc:From:Date; b=h0QcRFn3bnobTZ4s2Ya/l5/kinmeQ4DKU8a0tLa9/AhHRtTrSeEKeCS5DjmmIxUpN 7ZIIA7ql14lpwxK2WwOM/4L4LtfUgcVHwwLc3/+8dy1/qXJonsw4T4UhvKjRQrTYcX rUmhf8i1qSqpqemVhQIEQokkP/KHJjlcMoVllUQw= Subject: FAILED: patch "[PATCH] f2fs: fix to migrate all curseg types during" failed to apply to 5.15-stable tree To: daehojeong@google.com,chao@kernel.org,jaegeuk@kernel.org,s_min.jeong@samsung.com Cc: From: Date: Wed, 09 Sep 2026 13:26:47 +0200 Message-ID: <2026090947-hardwired-robust-7d28@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 8ec06f50ddd8d201bd7e55b896ae28ed9d4cb7d1 # git commit -s git send-email --to '' --in-reply-to '2026090947-hardwired-robust-7d28@gregkh' --subject-prefix 'PATCH 5.15.y' 'HEAD^..' Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 8ec06f50ddd8d201bd7e55b896ae28ed9d4cb7d1 Mon Sep 17 00:00:00 2001 From: Daeho Jeong Date: Wed, 19 Aug 2026 11:06:35 -0700 Subject: [PATCH] f2fs: fix to migrate all curseg types during free_segment_range 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 diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 3215630c353d..5917ee917d87 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -2240,7 +2240,7 @@ static int free_segment_range(struct f2fs_sb_info *sbi, f2fs_reset_gc_victim_resource(sbi, start, end); /* 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;