Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=79f4f6428f6ceb9af57330092271bda028c23a96
Commit:     79f4f6428f6ceb9af57330092271bda028c23a96
Parent:     165de5b7f2719c1984956504128545839762d635
Author:     Alexey Dobriyan <[EMAIL PROTECTED]>
AuthorDate: Mon Mar 26 14:09:52 2007 -0700
Committer:  David S. Miller <[EMAIL PROTECTED]>
CommitDate: Mon Mar 26 14:09:52 2007 -0700

    [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 <[EMAIL PROTECTED]>
    Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
 net/socket.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/net/socket.c b/net/socket.c
index 9566e57..ea8f81a 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);
-
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