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authorDavid S. Miller <davem@davemloft.net>2008-11-06 15:45:32 -0800
committerDavid S. Miller <davem@davemloft.net>2008-11-06 15:45:32 -0800
commit3b53fbf4314594fa04544b02b2fc6e607912da18 (patch)
treeaf88f6c7ecbdf06719c92cc8891f75f497b70555 /ipc/msgutil.c
parent518a09ef11f8454f4676125d47c3e775b300c6a5 (diff)
net: Fix recursive descent in __scm_destroy().
__scm_destroy() walks the list of file descriptors in the scm_fp_list pointed to by the scm_cookie argument. Those, in turn, can close sockets and invoke __scm_destroy() again. There is nothing which limits how deeply this can occur. The idea for how to fix this is from Linus. Basically, we do all of the fput()s at the top level by collecting all of the scm_fp_list objects hit by an fput(). Inside of the initial __scm_destroy() we keep running the list until it is empty. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'ipc/msgutil.c')
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