Date: Thu, 24 Jun 2010 10:02:39 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-drivers@freebsd.org Cc: KGB <380008156@qq.com> Subject: Re: Kernel panic of "spin lock held too long" Message-ID: <201006241002.39092.jhb@freebsd.org> In-Reply-To: <tencent_3D0058516C43A6E009FFC897@qq.com> References: <tencent_3D0058516C43A6E009FFC897@qq.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thursday 24 June 2010 7:30:00 am KGB wrote: > Hi All: > I am writing a driver module (named tej21.ko) under freebsd8-release(i386) and I had a problem of the kernel panic "spin lock held too long". > > When I kldload my driver module without smp support (kern.smp.disabled = 1),every thing is OK. > But when I support the smp ,I met the problem 'Kernel panic of "spin lock held too long" '. > > My Hardware : > 1.CPU: Pentium(R) Dual-Core CPU E5200 @ 2.50GHz (2499.95-MHz 686-class CPU) > > Software: > freeBSD 8 release i386. > > The dump message is below.Why is there this problem,can someone give me advice? > > /*------------------------------dump message ----------------------------------------------*/ > Unread portion of the kernel message buffer: > spin lock 0xc0d9e580 (sched lock 1) held by 0xc5546b40 (tid 100003) too long Can you get a trace of this thread (100003)? -- John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201006241002.39092.jhb>