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Message-Id: <20221019083256.535541872@linuxfoundation.org>
Date: Wed, 19 Oct 2022 10:23:55 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, stable@...nel.org,
Ye Bin <yebin10@...wei.com>, Jan Kara <jack@...e.cz>,
Theodore Tso <tytso@....edu>
Subject: [PATCH 6.0 148/862] ext4: update state->fc_regions_size after successful memory allocation
From: Ye Bin <yebin10@...wei.com>
commit 27cd49780381c6ccbf248798e5e8fd076200ffba upstream.
To avoid to 'state->fc_regions_size' mismatch with 'state->fc_regions'
when fail to reallocate 'fc_reqions',only update 'state->fc_regions_size'
after 'state->fc_regions' is allocated successfully.
Cc: stable@...nel.org
Signed-off-by: Ye Bin <yebin10@...wei.com>
Reviewed-by: Jan Kara <jack@...e.cz>
Link: https://lore.kernel.org/r/20220921064040.3693255-4-yebin10@huawei.com
Signed-off-by: Theodore Ts'o <tytso@....edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
fs/ext4/fast_commit.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
--- a/fs/ext4/fast_commit.c
+++ b/fs/ext4/fast_commit.c
@@ -1689,14 +1689,15 @@ int ext4_fc_record_regions(struct super_
if (state->fc_regions_used == state->fc_regions_size) {
struct ext4_fc_alloc_region *fc_regions;
- state->fc_regions_size +=
- EXT4_FC_REPLAY_REALLOC_INCREMENT;
fc_regions = krealloc(state->fc_regions,
- state->fc_regions_size *
- sizeof(struct ext4_fc_alloc_region),
+ sizeof(struct ext4_fc_alloc_region) *
+ (state->fc_regions_size +
+ EXT4_FC_REPLAY_REALLOC_INCREMENT),
GFP_KERNEL);
if (!fc_regions)
return -ENOMEM;
+ state->fc_regions_size +=
+ EXT4_FC_REPLAY_REALLOC_INCREMENT;
state->fc_regions = fc_regions;
}
region = &state->fc_regions[state->fc_regions_used++];
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