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| author | Yunfeng Ye <yeyunfeng@huawei.com> | 2020-01-30 22:17:26 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-24 08:34:52 +0100 |
| commit | 42cdf18d72e4cf43516119b478400d00836d9765 (patch) | |
| tree | 801a7237d955c7eb5537616491b9858168858fa1 | |
| parent | acaf62810c91f2a733f784e62b126466ec7950a7 (diff) | |
| download | linux-stable-42cdf18d72e4cf43516119b478400d00836d9765.tar.gz linux-stable-42cdf18d72e4cf43516119b478400d00836d9765.tar.bz2 linux-stable-42cdf18d72e4cf43516119b478400d00836d9765.zip | |
reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
[ Upstream commit aacee5446a2a1aa35d0a49dab289552578657fb4 ]
The variable inode may be NULL in reiserfs_insert_item(), but there is
no check before accessing the member of inode.
Fix this by adding NULL pointer check before calling reiserfs_debug().
Link: http://lkml.kernel.org/r/79c5135d-ff25-1cc9-4e99-9f572b88cc00@huawei.com
Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>
Cc: zhengbin <zhengbin13@huawei.com>
Cc: Hu Shiyuan <hushiyuan@huawei.com>
Cc: Feilong Lin <linfeilong@huawei.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | fs/reiserfs/stree.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c index 0037aea97d39..2946713cb00d 100644 --- a/fs/reiserfs/stree.c +++ b/fs/reiserfs/stree.c @@ -2250,7 +2250,8 @@ error_out: /* also releases the path */ unfix_nodes(&s_ins_balance); #ifdef REISERQUOTA_DEBUG - reiserfs_debug(th->t_super, REISERFS_DEBUG_CODE, + if (inode) + reiserfs_debug(th->t_super, REISERFS_DEBUG_CODE, "reiserquota insert_item(): freeing %u id=%u type=%c", quota_bytes, inode->i_uid, head2type(ih)); #endif |