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authorJeff Layton <jlayton@redhat.com>2008-05-12 19:56:05 -0700
committerSteve French <sfrench@us.ibm.com>2008-05-13 03:06:13 +0000
commit6353450a2deefaa79cdb4fd2b72830c7db610256 (patch)
tree8a09c4b38d90c26ec431cb9e3691a73ca0da2031 /fs/cifs
parentd0a9c078db4769f7305ff9774558776d12bfb25b (diff)
downloadop-kernel-dev-6353450a2deefaa79cdb4fd2b72830c7db610256.zip
op-kernel-dev-6353450a2deefaa79cdb4fd2b72830c7db610256.tar.gz
fix memory leak in CIFSFindNext
When CIFSFindNext gets back an -EBADF from a call, it sets the return code of the function to 0 and eventually exits. Doing this makes the cleanup at the end of the function skip freeing the SMB buffer, so we need to make sure we free the buffer explicitly when doing this. If we don't you end up with errors like this when unplugging the cifs kernel module: slab error in kmem_cache_destroy(): cache `cifs_request': Can't free all objects [<c046bdbf>] kmem_cache_destroy+0x61/0xf3 [<e0f03045>] cifs_destroy_request_bufs+0x14/0x28 [cifs] [<e0f2016e>] exit_cifs+0x1e/0x80 [cifs] [<c043aeae>] sys_delete_module+0x192/0x1b8 [<c04451fd>] audit_syscall_entry+0x14b/0x17d [<c0405413>] syscall_call+0x7/0xb ======================= Signed-off-by: Jeff Layton <jlayton@redhat.com>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/CHANGES3
-rw-r--r--fs/cifs/cifssmb.c1
2 files changed, 3 insertions, 1 deletions
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 8355e91..502a4c2 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -12,7 +12,8 @@ Add ability to modify cifs acls for handling chmod (when mounted with
cifsacl flag). Fix prefixpath path separator so we can handle mounts
with prefixpaths longer than one directory (one path component) when
mounted to Windows servers. Fix slow file open when cifsacl
-enabled.
+enabled. Fix memory leak in FindNext when the SMB call returns -EBADF.
+
Version 1.51
------------
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 95fbba4e..641cc8f 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -3679,6 +3679,7 @@ int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
if (rc) {
if (rc == -EBADF) {
psrch_inf->endOfSearch = true;
+ cifs_buf_release(pSMB);
rc = 0; /* search probably was closed at end of search*/
} else
cFYI(1, ("FindNext returned = %d", rc));
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