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[PATCH] fix fdset leakage

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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 <[email protected]>
Signed-off-by: Kirill Korotaev <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Kirill Korotaev 2006-07-12 09:03:05 -07:00 • committed by Linus Torvalds
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);