* Al Viro <[EMAIL PROTECTED]> wrote: > On Wed, Oct 03, 2007 at 10:46:07AM +0200, Ingo Molnar wrote: > > > > hm, i just triggered the procfs crash below with -rc9 on a testbox. > > Config attached. It's easy to reproduce it via 'service sshd restart'. > > The crash site is: > > > > (gdb) list *0xc017599d > > 0xc017599d is in seq_path (fs/seq_file.c:354). > > 349 if (m->count < m->size) { > > 350 char *s = m->buf + m->count; > > 351 char *p = d_path(dentry, mnt, s, m->size - > > m->count); > > 352 if (!IS_ERR(p)) { > > 353 while (s <= p) { > > 354 char c = *p++; > > 355 if (!c) { > > 356 p = m->buf + m->count; > > 357 m->count = s - m->buf; > > 358 return s - p; > > (gdb) > > > > any ideas? Fortunately i was able to do an strace of the incident: > > Charming... So we get d_path() either returning junk or we get > something that isn't NUL-terminated. Which one it is? I.e. what does > p look like and what's in s?
could be use-after-free as well, as CONFIG_PAGEALLOC was enabled. Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/