Date: Tue, 29 Sep 2020 17:36:15 -0400 From: Shawn Webb <shawn.webb@hardenedbsd.org> To: Kristof Provost <kp@FreeBSD.org> Cc: Alexander Leidinger <Alexander@leidinger.net>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: iflib/bridge kernel panic Message-ID: <20200929213615.5gpupobj2ylgv2yr@mutt-hbsd> In-Reply-To: <6A5EFCFA-C0DC-4DEF-834B-2F9E4FCC8812@FreeBSD.org> References: <CAExMvskTkVprZsfXHBUv9stpiCo1QBAzoOg1VrWd4kRbz0NyJg@mail.gmail.com> <58CADEBB-64FD-414E-AB19-E4F8D3CABCA5@FreeBSD.org> <20200921121627.3dovpumnl6xub3kn@mutt-hbsd> <7FE1F106-2CEE-4692-95D0-14C5229ED768@FreeBSD.org> <20200928124531.Horde.0EjsBzIG5ktLzby_tFcoPPS@webmail.leidinger.net> <33903BFF-4158-4CD9-AD79-360BCD81F1C9@FreeBSD.org> <20200928164410.Horde.mYBkuEeD_Q6xgnKnwNomv7P@webmail.leidinger.net> <6A5EFCFA-C0DC-4DEF-834B-2F9E4FCC8812@FreeBSD.org>
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--z6mdqzawej7d7qnq Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Sep 29, 2020 at 11:20:44PM +0200, Kristof Provost wrote: >=20 >=20 > On 28 Sep 2020, at 16:44, Alexander Leidinger wrote: >=20 > > Quoting Kristof Provost <kp@freebsd.org> (from Mon, 28 Sep 2020 13:53:16 > > +0200): > >=20 > > > On 28 Sep 2020, at 12:45, Alexander Leidinger wrote: > > > > Quoting Kristof Provost <kp@freebsd.org> (from Sun, 27 Sep 2020 > > > > 17:51:32 +0200): > > > > > Here???s an early version of a task queue based approach: http://= people.freebsd.org/~kp/0001-bridge-Cope-with-if_ioctl-s-that-sleep.patch > > > > >=20 > > > > > That still needs to be cleaned up, but this should resolve > > > > > the sleep issue and the LOR. > > > >=20 > > > > There are some issues... seems like inside a jail I can't ping > > > > systems outside of the hardware. > > > >=20 > > > > Bridge setup: > > > > - member jail A > > > > - member jail B > > > > - member external_if of host > > > >=20 > > > > If I ping the router from the host, it works. If I ping from one > > > > jail to another, it works. If I ping from the jail to the IP of > > > > the external_if, it works. If I ping from a jail to the router, > > > > I do not get a response. > > > >=20 > > > Can you check for 'failed ifpromisc' error messages in dmesg? And > > > verify that all bridge member interfaces are in promiscuous mode? > >=20 > > I have a panic for you...: > > - startup still in progress =3D 22 jails in startup, somewhere after a > > few jails started the panic happened > > - tcpdump was running on the external interface > > - a ping to a jail IP from another system was running, the first ping > > went through, then it paniced > >=20 > > First regarding your questions about promisc mode: no error, but the > > promisc mode is directly disabled again on all interfaces. > >=20 > I think I see why you had issues with the promiscuous setting. I???ve > updated the patch to be even more horrific than it was before. >=20 > I can???t explain the panic, and the backtrace also doesn???t appear to be > directly related to this patch. Not sure what???s going on with that. I should have time to test the new patch this weekend. ${LIFE} is keeping me busy the past few weeks. I'm gonna add an event in my calendar to remind me to test the patch. heh. Thanks, --=20 Shawn Webb Cofounder / Security Engineer HardenedBSD GPG Key ID: 0xFF2E67A277F8E1FA GPG Key Fingerprint: D206 BB45 15E0 9C49 0CF9 3633 C85B 0AF8 AB23 0FB2 https://git-01.md.hardenedbsd.org/HardenedBSD/pubkeys/src/branch/master/Sha= wn_Webb/03A4CBEBB82EA5A67D9F3853FF2E67A277F8E1FA.pub.asc --z6mdqzawej7d7qnq Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEA6TL67gupaZ9nzhT/y5nonf44foFAl9zqM0ACgkQ/y5nonf4 4fq5zg/+JM3ycYLRr82nQEaG1ihREiR6hVuXfuq3mpTIOqPVbqQ6r58lJK4+1DaI SkXMtJ92hS3rxS0mn6ORD782YHBTI6RAi0UPpGpj7OkVjj/nFgag4rP4+1Z4qF0X vFr7s0v/DffZFr1nJRJ6d5Yg9zXz5hp/VPIY6yDetfjxNQ38TVH7Kbaxtst7QgRZ XvCVtBAxOXZBRrkBK5ABdNHc1HszPLJYbR1BwNQp4PNXSWDRFVX04GOA1t/LHXEA s00d35Bw2Xw2boW+gy+zSZqrA3N/5vMO8fCtooswoZIi104+JJckUAtDgmwo9gL0 0YguM0sUcjWcj9zg8Q4RThdckqA6diHgDwHLHPOI+z7y+PY6Zy6SHIatKKfZORw2 wLmpr8BNQdF+5XqqsGZBW6QQBXZuY6F652LG//Li1oGVKAizhdIWfOOxFDP0YSzg lE0IVKiN5uMXqHwllDSmwQFWPGT9sBh8C0/lW9oXj9j1KqCDsZ84caOfnb16oDMx fnpl4akctu88JSWSPzQFD72wmiOyiAfvtsYpSKjPvJQMOiCurlnRAh8rRmmIbFhA J8ylgE8e9+PxPk3Tb6o0nhMYu3wTQoV0MthInSX8BC7t7bs2UpVrH1eie39s0xgf zJu+DTwuUMgXfIRo3q0FbVywBIH5FE3bHR2tg4/qK3YjfenBEQE= =iXps -----END PGP SIGNATURE----- --z6mdqzawej7d7qnq--
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