Date: Wed, 18 Jan 2017 14:45:34 -0500 From: Shawn Webb <shawn.webb@hardenedbsd.org> To: Sean Bruno <sbruno@freebsd.org> Cc: peter.blok@bsd4all.org, freebsd-current@freebsd.org Subject: Re: crash in iflib_fast_intr Message-ID: <20170118194534.47vcuas7jllvw3o6@mutt-hardenedbsd> In-Reply-To: <132b9c54-26dd-c57d-2fbb-58f8f9b256b0@freebsd.org> References: <0D6E88B3-6EB8-428F-B116-40D304CD74E5@bsd4all.org> <132b9c54-26dd-c57d-2fbb-58f8f9b256b0@freebsd.org>
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--rytf7lcs4w25ztw5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Jan 18, 2017 at 07:31:12AM -0700, Sean Bruno wrote: >=20 >=20 > On 01/18/17 03:37, peter.blok@bsd4all.org wrote: > > Hi, > >=20 > > A kernel without option EARLY_AP_STARTUP crashes in if lib_fast_intr. S= ince GENERIC now has EARLY_AP_STARTUP, this probably got unnoticed. Problem= is reproducible. > >=20 > > KDB: stack backtrace: > > #0 0xffffffff805cec97 at kdb_backtrace+0x67 > > #1 0xffffffff80584816 at vpanic+0x186 > > #2 0xffffffff80584683 at panic+0x43 > > #3 0xffffffff8090f222 at trap_fatal+0x322 > > #4 0xffffffff8090f3ec at trap_pfault+0x1bc > > #5 0xffffffff8090eaa0 at trap+0x280 > > #6 0xffffffff808f35e1 at calltrap+0x8 > > #7 0xffffffff806a202d at iflib_fast_intr+0x3d > > #8 0xffffffff8054963b at intr_event_handle+0x9b > > #9 0xffffffff80965f38 at intr_execute_handlers+0x48 > > #10 0xffffffff8096b1cf at lapic_handle_intr+0x3f > > #11 0xffffffff808f3cc7 at Xapic_isr1+0xb7 > > #12 0xffffffff805b994a at sched_idletd+0x37a > > #13 0xffffffff805460f5 at fork_exit+0x85 > > #14 0xffffffff808f3b1e at fork_trampoline+0xe > >=20 > > Peter >=20 > Thanks for the report. We're looking at this. >=20 > This is with an igb(4) interface or em(4)? >=20 > sean >=20 I'm getting something similar with em(4): https://goo.gl/photos/MXiFXtatBYcWagJTA I'm at this commit in HardenedBSD: https://github.com/HardenedBSD/hardenedBSD/commit/2108b0d56984115eb52e72bd1= 6539071064b348e Thanks, --=20 Shawn Webb Cofounder and Security Engineer HardenedBSD GPG Key ID: 0x6A84658F52456EEE GPG Key Fingerprint: 2ABA B6BD EF6A F486 BE89 3D9E 6A84 658F 5245 6EEE --rytf7lcs4w25ztw5 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEKrq2ve9q9Ia+iT2eaoRlj1JFbu4FAlh/xdwACgkQaoRlj1JF bu5jrhAAxj1DnKNC3c3d5TYDFdFYr6S3cYcNY7JWy8YUbP+kWvBfREJijShFqKKW vrwz8+yK6lBkqbvhDOOCMkJc1ETICIkwI5s93c9CPrzBRhrkT+XI6rB2SDGcVRDk XX+4SorjlmMpE61lnQDRMgh2zy9mo3FrxPAuOeb6OW8lHsH69BGq6TGey6lnIKf1 nVQVYuN8kHLD5TGYRIgKbBDFDloqKML7F12tNiJZADmn4r7DQALfdel5N8L08Ht6 2Th2Tiu7QAaBM6hmC5MWbmmbUT7IpX3lqS1PJpp7D2xWb7XC3XtNFuuazpmaoE8Z AfDz8WJ7Cdvx5gdHsUGA+1vcv/uZu2NiKZwFjsIu/o1a/FBIofFZyBVoEzlSpuxp j7jAS2dRU5cwWKiO//dKzASX2fV3P8KpuOAA++86/2HmAU39YaWy4GFRawaoQggO AEDEx+LUEC+Fv1b3tcFvrJjxUuT1KdQFgBAKfA2Qbqn30xIyuZ1JAPfB3gQXauYy 1OT0aIKSxYxqltYHRs79hd2XDi16JuwrENF6b+sqaB5Q0v4/l88Mgr5+NFBwNNXi 22s/xYMCYhnsL4XcPWqrHfpDBXU0B7Bfw2qxjcHdurjZ0tPtCURQdRwXFDfYBTl4 txOVqA8wKFAde3HxO750NPxryAbjrps8230LDfP1W3WcunFFiUQ= =nc1l -----END PGP SIGNATURE----- --rytf7lcs4w25ztw5--
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