Re: [PATCH/RFC] Futex mmap_sem deadlock
From: Chris Friesen
Date: Tue Feb 22 2005 - 16:22:31 EST
Jamie Lokier wrote:
In futex.c:
down_read(¤t->mm->mmap_sem);
get_futex_key(...) etc.
queue_me(...) etc.
current->flags |= PF_MMAP_SEM; <- new
ret = get_user(...);
current->flags &= PF_MMAP_SEM; <- new
/* the rest */
Should the second new line be this (with the inverse)?
current->flags &= ~PF_MMAP_SEM;
Chris
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