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reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()

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[ 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>
This commit is contained in:
Yunfeng Ye 2020-01-30 22:17:26 -08:00 committed by Greg Kroah-Hartman
parent acaf62810c
commit 42cdf18d72
1 changed files with 2 additions and 1 deletions
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3
fs/reiserfs/stree.c
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@ -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