Date: Wed, 27 Nov 2013 12:24:48 +0200 From: Konstantin Belousov <kostikbel@gmail.com> To: Don Lewis <truckman@FreeBSD.org> Cc: freebsd-current@FreeBSD.org Subject: Re: panic: double fault with 11.0-CURRENT r258504 Message-ID: <20131127102448.GX59496@kib.kiev.ua> In-Reply-To: <201311270913.rAR9DfeL039290@gw.catspoiler.org> References: <20131127084800.GV59496@kib.kiev.ua> <201311270913.rAR9DfeL039290@gw.catspoiler.org>
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--7xM+HP/38VnOPdrP Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Nov 27, 2013 at 01:13:41AM -0800, Don Lewis wrote: > On 27 Nov, Konstantin Belousov wrote: > > On Wed, Nov 27, 2013 at 12:22:27AM -0800, Don Lewis wrote: > >> It took a while, but I just got another double fault, though this one = is > >> somewhat different. This time it trapped in cpu_switch(), which > >> resulted in calls to > >> trap()->printf()->...->putchar()->msgbuf_addstr()->_mtx_lock_spin_flag= s() > >> where it trapped again. > >>=20 > >> Sitting at DDB prompt ... > >=20 > > Does 'show allpcpu' work ? >=20 > Yup. For both CPUs, curthread =3D=3D idlethread, both CPUs have the same > curpcb. What is "dynamic pcpu"? The values differ considerably between > the two CPUs. Are you sure about curpcb being the same for two CPUs ? This is rather broken. The best would be to show the actual ddb output. Dynamic pcpu is in fact 'static' pcpu which is allocated for modules. It must be per-cpu, so different values are correct. --7xM+HP/38VnOPdrP Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (FreeBSD) iQIcBAEBAgAGBQJSlchvAAoJEJDCuSvBvK1BviQP/1Kcp03cEQ4SpER3ybN4R9v7 BuEWbebzNPk/dF9BGqNiVN+fjDxRaVe8Yc+HkFKqC9f0ZA2WlcRksW6fRVnoW/Y/ NexLtn97tZQJF+u+zGDfWE2T0mvyasxdbUBgm4Q+Is/P96Qa5s4MVCiUMqpbpqw8 B6/8Hsvujc0ZBbsflP/gT6TgT0SP7klnThKVf4OrFgxUWvZUz5Xt10PwOeDfmsp4 8re68v0K+SrpNhcGzT9ZfGZKv4yF6rCIaYGeG6x5VbTKcVCi99xU68N+OzJqJ+Cp 7eNJeo9INUNxTkKfYIQF1tr9yU7bDcXD+7G2x5UbhL3EgCcqiuYzwRfLqlQdD/D1 Z/D4aA3MsxzxK+0szgxv/6yhqV7fUa8WRhlNUdpUXlJYKNbejWgtvdL0WBH+eIgf IkPj2LUYYZCMe+BrchX1WSdKhbPfWX484tJSI2XzDS0AW2p/dT5XA88C1wg2/AOn yftxKpUinvDkwDtjBeCKdQcVlXn+KInTtdFSzYF4XXS33TsHz8hMT+HGe9oIJKHF mQWsntpc5zpmy8q9ugZwF3LxvK9Aduz71au+Ow/q4l99c4/WQwZxSEKR2u1LxYcF LCI+DrJGsuHR4TPXEu4hoyjWrASnXthtk1uI7zYjpglxQ5mbzKOk5VbbwJBkgH/w UgVAuncXLPYXl1b0dHGi =+ngu -----END PGP SIGNATURE----- --7xM+HP/38VnOPdrP--
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