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fs/cifs/cifs_dfs_ref.c: fix potential memory leakage 

When it goes to error through line 144, the memory allocated to *devname is
not freed, and the caller doesn't free it either in line 250. So we free the
memroy of *devname in function cifs_compose_mount_options() when it goes to
error.

Signed-off-by: Cong Ding <dinggnu@gmail.com>
CC: stable <stable@kernel.org>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Cong Ding 2013-01-22 19:20:58 -05:00 committed by Steve French
parent e3e2775ced
commit 10b8c7dff5
1 changed files with 2 additions and 0 deletions
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fs/cifs/cifs_dfs_ref.c
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@ -226,6 +226,8 @@ compose_mount_options_out:
compose_mount_options_err:
kfree(mountdata);
mountdata = ERR_PTR(rc);
kfree(*devname);
*devname = NULL;
goto compose_mount_options_out;
}