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authorLinus Torvalds <torvalds@g5.osdl.org>2005-10-07 08:54:21 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-07 08:54:21 +0400
commit829841146878e082613a49581ae252c071057c23 (patch)
treeb38d26d6c99f043f14242351ac084f8b088a772b /fs
parentedb4a3534adbaf90768d67da35f0bfeac4767db6 (diff)
downloadlinux-829841146878e082613a49581ae252c071057c23.tar.xz
Avoid 'names_cache' memory leak with CONFIG_AUDITSYSCALL
The nameidata "last.name" is always allocated with "__getname()", and should always be free'd with "__putname()". Using "putname()" without the underscores will leak memory, because the allocation will have been hidden from the AUDITSYSCALL code. Arguably the real bug is that the AUDITSYSCALL code is really broken, but in the meantime this fixes the problem people see. Reported by Robert Derr, patch by Rick Lindsley. Acked-by: Al Viro <viro@ftp.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/namei.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 043d587216b5..aa62dbda93ac 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1551,19 +1551,19 @@ do_link:
if (nd->last_type != LAST_NORM)
goto exit;
if (nd->last.name[nd->last.len]) {
- putname(nd->last.name);
+ __putname(nd->last.name);
goto exit;
}
error = -ELOOP;
if (count++==32) {
- putname(nd->last.name);
+ __putname(nd->last.name);
goto exit;
}
dir = nd->dentry;
down(&dir->d_inode->i_sem);
path.dentry = __lookup_hash(&nd->last, nd->dentry, nd);
path.mnt = nd->mnt;
- putname(nd->last.name);
+ __putname(nd->last.name);
goto do_last;
}