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[PATCH] Fix the fdtable freeing in the case of vmalloced fdset/arrays

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Noted by David Miller:

  "The bug is that free_fd_array() takes a "num" argument, but when
   calling it from __free_fdtable() we're instead passing in the size in
   bytes (ie.  "num * sizeof(struct file *)")."

Yes it is a bug. I think I messed it up while merging newer
changes with an older version where I was using size in bytes
to optimize.

Signed-off-by: Dipankar Sarma <dipankar@in.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Dipankar Sarma 2005-09-15 00:48:42 +05:30 committed by Linus Torvalds
parent c7e43c78ae
commit 0b175a7e68
1 changed files with 3 additions and 7 deletions
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10
fs/file.c
View file

@ -69,13 +69,9 @@ void free_fd_array(struct file **array, int num)
static void __free_fdtable(struct fdtable *fdt)
{
int fdset_size, fdarray_size;
fdset_size = fdt->max_fdset / 8;
fdarray_size = fdt->max_fds * sizeof(struct file *);
free_fdset(fdt->open_fds, fdset_size);
free_fdset(fdt->close_on_exec, fdset_size);
free_fd_array(fdt->fd, fdarray_size);
free_fdset(fdt->open_fds, fdt->max_fdset);
free_fdset(fdt->close_on_exec, fdt->max_fdset);
free_fd_array(fdt->fd, fdt->max_fds);
kfree(fdt);
}