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[PATCH] fix fdset leakage 

When found, it is obvious.  nfds calculated when allocating fdsets is
rewritten by calculation of size of fdtable, and when we are unlucky, we
try to free fdsets of wrong size.

Found due to OpenVZ resource management (User Beancounters).

Signed-off-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: Kirill Korotaev <dev@openvz.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
wifi-calibration
Kirill Korotaev 2006-07-12 09:03:05 -07:00 committed by Linus Torvalds
parent abf75a5033
commit d579091b43
1 changed files with 3 additions and 1 deletions
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4
fs/file.c
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@ -273,11 +273,13 @@ static struct fdtable *alloc_fdtable(int nr)
} while (nfds <= nr);
new_fds = alloc_fd_array(nfds);
if (!new_fds)
goto out;
goto out2;
fdt->fd = new_fds;
fdt->max_fds = nfds;
fdt->free_files = NULL;
return fdt;
out2:
nfds = fdt->max_fdset;
out:
if (new_openset)
free_fdset(new_openset, nfds);