Description of problem:
I keep finding /proc/*/exe symlinks with trailing garbage on my box:

ultra:[~]$ cat readlink.c
#include <stdio.h>
#include <unistd.h>

int main(int argc, char *argv[])
{
  char buf[BUFSIZ];
  int i, j, n;

  for (i = 1; i < argc; i++)
    {
      n = readlink(argv[i], buf, BUFSIZ);

      for (j = 0; j < n; j++)
        {
          char c = buf[j];
          if (c == '\\')
            printf("\\\\");
          else if (c > 32 && c < 127)
            putchar(c);
          else
            printf("\\x%02x", c);
        }
      putchar('\n');
    }
}
ultra:[~]$ gcc readlink.c -o readlink
ultra:[~]$ ./readlink /proc/30781/exe
/usr/bin/fetchmail\x00cation\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20(deleted)

Version-Release number of selected component (if applicable):
kernel-2.6.19-1.2895.fc6

How reproducible:
It seems fairly random which processes will get garbled links, but once a
process has one it keeps it until it's killed as far as I can tell.

Steps to Reproduce:
1. Run the above program on /proc/*/exe
2. Look for junk