Date: Thu, 5 Nov 2015 16:34:24 +0100 From: Lars Engels <lars.engels@0x20.net> To: Hans Petter Selasky <hps@selasky.org> Cc: arm@freebsd.org Subject: Re: [Banana Pi] Fatal kernel mode data abort: 'Alignment Fault' on read Message-ID: <20151105153423.GS66179@e-new.0x20.net> In-Reply-To: <563B4813.1060403@selasky.org> References: <20151105104859.GQ66179@e-new.0x20.net> <563B372E.20607@selasky.org> <20151105120950.GR66179@e-new.0x20.net> <563B4813.1060403@selasky.org>
next in thread | previous in thread | raw e-mail | index | archive | help
--pFwAERqMlXzMQ5I7 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Nov 05, 2015 at 01:14:11PM +0100, Hans Petter Selasky wrote: > On 11/05/15 13:09, Lars Engels wrote: > > On Thu, Nov 05, 2015 at 12:02:06PM +0100, Hans Petter Selasky wrote: > >> On 11/05/15 11:48, Lars Engels wrote: > >>> Using FreeBSD-armv6-11.0-A20-290366.img I can reproducible crash the > >>> kernel by USB-tethering the Banana Pi to a mobile phone and run " > >>> pkg bootstrap". It looks like this: > >>> > >>> root@bananapi:/ # pkg bootstrap > >>> The package management tool is not yet installed on your system. > >>> Do you want to fetch and install it now? [y/N]: y > >>> Bootstrapping pkg from pkg+http://pkg.FreeBSD.org/FreeBSD:11:armv6/la= test, please wait... > >>> Fatal kernel mode data abort: 'Alignment Fault' on read > >>> trapframe: 0xea576a90 > >>> FSR=3D00000001, FAR=3Dc43a1d6e, spsr=3D60000113 > >>> r0 =3D00000014, r1 =3D0000003c, r2 =3D0000003c, r3 =3D00000903 > >>> r4 =3D00000000, r5 =3Dc43a1d6a, r6 =3D00000028, r7 =3Dc43a1d56 > >>> r8 =3D00000000, r9 =3D00000014, r10=3D00000028, r11=3Dea576bf8 > >>> r12=3D00000000, ssp=3Dea576b20, slr=3Dc061aba4, pc =3Dc04f68e8 > >>> > >>> [ thread pid 13 tid 100024 ] > >>> Stopped at tcp_input+0x820: ldr r0, [r5, #0x004] > >> > >> Hi, > >> > >> Could you "objdump -Dx --source /boot/kernel/kernel" and figure out > >> which code line "tcp_input+0x820" corresponds to? > > > > You mean like "objdump ... | grep -C10 tcp_input+0x820"? > > > > I started that half an hour ago and it's still not finished. > > >=20 > No, you need to find where tcp_input starts, by less-ing it, then add=20 > 0x820 to that address and then verify that the assembly instruction=20 > there matches. Ok, I have no idea what I am doing, but here's what I did: # objdump -Dx --source /boot/kernel/kernel --start-address=3D"0xc04f51c8" = --stop-address=3D"0xC04F59E8" The result is a 1,3MB text file at: http://bsd-geek.de/FreeBSD/objdump.txt Can you see anything there? --pFwAERqMlXzMQ5I7 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQF8BAEBCgBmBQJWO3b/XxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQ4RjQwMDE3RTRERjUzMTI1N0FGRTUxNDlF NTRDQjM3RDNBMDg5RDZEAAoJEOVMs306CJ1tCZIIAJdiBAUzptMnspXPhPcgkUJh 9bJaWbk+u1vQutzvSiWhGJLY6uklCTMlytFll9A5XBNeDoM85/PbtY5xEJr19vC9 CtmP4whftSE3SRpv5eEgFk9I8BwRSwpxbutUYC5q4+0df9j+U8qhJI4rJvkGND9O YeCe4zaBg+zWJzSru8GBQf6w+1X7ElQTU7sFeFoArNrp4Bp03mi8nbdio3sxxPH3 7MlX8eEwWewTuh3mJ5tb2ieSc96Rl+q5J7ZIE2oVpMXMFaWOg2kDrMfT6Rj+BmKz sZcjxkjiG6LAYuD2huHdqs4d9aS1mPDWzEUzCCBs0HcUEXwf0GJn+2VjSJoKnRM= =hes5 -----END PGP SIGNATURE----- --pFwAERqMlXzMQ5I7--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20151105153423.GS66179>