Date: Thu, 31 Mar 2011 13:32:26 +0200 From: Svatopluk Kraus <onwahe@gmail.com> To: freebsd-current@freebsd.org Subject: schedcpu() in /sys/kern/sched_4bsd.c calls thread_lock() on thread with un-initialized td_lock Message-ID: <AANLkTimEiOW%2BkSZD6n1MHiRou3UWibU6Oy3fr9RO4_O4@mail.gmail.com>
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Hi,
I've got a page fault (because of NULL td_lock) in
thread_lock_flags() called from schedcpu() in /sys/kern/sched_4bsd.c
file. During process fork, new thread is linked to new process which
is linked to allproc list and both allproc_lock and new process lock
are unlocked before sched_fork() is called, where new thread td_lock
is initialized. Only PRS_NEW process status is on sentry but not
checked in schedcpu().
Svata
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