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author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-09 10:03:47 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-09 10:03:47 +0300 |
commit | bd935a7b21340e2e37f51a7f2d3188145e2fcf1f (patch) | |
tree | ac8af4e6ea552d32839c415b2f36d416ee327ea4 /fs/reiserfs/stree.c | |
parent | 96ba6c6e8922e89ca4908c650072d8f8d7b39cbc (diff) | |
parent | 36a21d51725af2ce0700c6ebcb6b9594aac658a6 (diff) | |
download | linux-bd935a7b21340e2e37f51a7f2d3188145e2fcf1f.tar.xz |
Merge 5.14-rc5 into driver-core-next
We need the driver core fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/reiserfs/stree.c')
-rw-r--r-- | fs/reiserfs/stree.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c index 476a7ff49482..ef42729216d1 100644 --- a/fs/reiserfs/stree.c +++ b/fs/reiserfs/stree.c @@ -387,6 +387,24 @@ void pathrelse(struct treepath *search_path) search_path->path_length = ILLEGAL_PATH_ELEMENT_OFFSET; } +static int has_valid_deh_location(struct buffer_head *bh, struct item_head *ih) +{ + struct reiserfs_de_head *deh; + int i; + + deh = B_I_DEH(bh, ih); + for (i = 0; i < ih_entry_count(ih); i++) { + if (deh_location(&deh[i]) > ih_item_len(ih)) { + reiserfs_warning(NULL, "reiserfs-5094", + "directory entry location seems wrong %h", + &deh[i]); + return 0; + } + } + + return 1; +} + static int is_leaf(char *buf, int blocksize, struct buffer_head *bh) { struct block_head *blkh; @@ -454,11 +472,14 @@ static int is_leaf(char *buf, int blocksize, struct buffer_head *bh) "(second one): %h", ih); return 0; } - if (is_direntry_le_ih(ih) && (ih_item_len(ih) < (ih_entry_count(ih) * IH_SIZE))) { - reiserfs_warning(NULL, "reiserfs-5093", - "item entry count seems wrong %h", - ih); - return 0; + if (is_direntry_le_ih(ih)) { + if (ih_item_len(ih) < (ih_entry_count(ih) * IH_SIZE)) { + reiserfs_warning(NULL, "reiserfs-5093", + "item entry count seems wrong %h", + ih); + return 0; + } + return has_valid_deh_location(bh, ih); } prev_location = ih_location(ih); } |