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authorLukas Czerner <lczerner@redhat.com>2019-03-15 00:15:32 -0400
committerTheodore Ts'o <tytso@mit.edu>2019-03-15 00:15:32 -0400
commitd64264d6218e6892edd832dc3a5a5857c2856c53 (patch)
tree74e45f6d49c954cbc67b645cfc9044ace4115ebf /fs
parent7cf77140777364d77b2b6e392e7e081a205a08c5 (diff)
downloadlinux-d64264d6218e6892edd832dc3a5a5857c2856c53.tar.bz2
ext4: add missing brelse() in add_new_gdb_meta_bg()
Currently in add_new_gdb_meta_bg() there is a missing brelse of gdb_bh in case ext4_journal_get_write_access() fails. Additionally kvfree() is missing in the same error path. Fix it by moving the ext4_journal_get_write_access() before the ext4 sb update as Ted suggested and release n_group_desc and gdb_bh in case it fails. Fixes: 61a9c11e5e7a ("ext4: add missing brelse() add_new_gdb_meta_bg()'s error path") Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs')
-rw-r--r--fs/ext4/resize.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 3d9b18505c0c..90061c3d048b 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -932,11 +932,18 @@ static int add_new_gdb_meta_bg(struct super_block *sb,
memcpy(n_group_desc, o_group_desc,
EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *));
n_group_desc[gdb_num] = gdb_bh;
+
+ BUFFER_TRACE(gdb_bh, "get_write_access");
+ err = ext4_journal_get_write_access(handle, gdb_bh);
+ if (err) {
+ kvfree(n_group_desc);
+ brelse(gdb_bh);
+ return err;
+ }
+
EXT4_SB(sb)->s_group_desc = n_group_desc;
EXT4_SB(sb)->s_gdb_count++;
kvfree(o_group_desc);
- BUFFER_TRACE(gdb_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, gdb_bh);
return err;
}