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authorAlexey Dobriyan <adobriyan@sw.ru>2007-03-27 01:09:52 +0400
committerDavid S. Miller <davem@davemloft.net>2007-03-27 01:09:52 +0400
commit79f4f6428f6ceb9af57330092271bda028c23a96 (patch)
treee73a452517b3e6f8cc5c583a3e0174b039ccc5a2 /net/socket.c
parent165de5b7f2719c1984956504128545839762d635 (diff)
downloadlinux-79f4f6428f6ceb9af57330092271bda028c23a96.tar.xz
[NET]: Correct accept(2) recovery after sock_attach_fd()
* d_alloc() in sock_attach_fd() fails leaving ->f_dentry of new file NULL * bail out to out_fd label, doing fput()/__fput() on new file * but __fput() assumes valid ->f_dentry and dereferences it Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/net/socket.c b/net/socket.c
index 9566e57ac7f5..ea8f81abc45c 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1381,7 +1381,7 @@ asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr,
err = sock_attach_fd(newsock, newfile);
if (err < 0)
- goto out_fd;
+ goto out_fd_simple;
err = security_socket_accept(sock, newsock);
if (err)
@@ -1414,6 +1414,11 @@ out_put:
fput_light(sock->file, fput_needed);
out:
return err;
+out_fd_simple:
+ sock_release(newsock);
+ put_filp(newfile);
+ put_unused_fd(newfd);
+ goto out_put;
out_fd:
fput(newfile);
put_unused_fd(newfd);