On 12/28/2012 4:52 PM, Ralf Baechle wrote: > On Thu, Dec 27, 2012 at 11:27:37PM -0500, Joshua Kinard wrote: > >> Has anyone run into an unhandled kernel unaligned access under 3.7.1? I've >> triggered it twice w/ network I/O on an SGI IP32 machine, however, the stack >> trace does not appear to be specific to any of IP32's own drivers. 3.6.7 >> was very stable, and the two oopses I've triggered so far both happened >> under 3.7.1. >> >> It looks like the culprit is in sk_stream_alloc_skb or tcp_sendmsg, however, >> I have little experience in the higher-level networking stack within Linux >> and wanted to see if anyone else has triggered this on other MIPS systems. >> >> Seems to happen when I am logged in via SSH (on IPv6) and generating a burst >> of console output. >> >> Unhandled kernel unaligned access[#3]: >> Cpu 0 >> $ 0 : 0000000000000000 0000000000000010 0000000000000000 bfffff005671271c >> $ 4 : 0000000000000000 0000000000000000 0000000000000000 0000000000000000 >> $ 8 : 980000005c24e000 0000000000000000 980000005c24e000 00000000000000cc >> $12 : ffffffff9001fce1 000000001000001e fffffffffffff000 000000000000001f >> $16 : 980000005c00fa40 ffffffffde0300b8 ffffff0000000000 0000000000000005 >> $20 : 000000007f875700 00000000000005a8 0000000000000008 0000000000000005 >> $24 : 0000000000000001 00000000000003f0 >> $28 : 980000005c00c000 980000005c00fa10 0000000000000000 ffffffff800059a0 >> Hi : 0000000007a11c93 >> Lo : b645a1cac992645e >> epc : ffffffff8000b700 do_ade+0x1b0/0x480 >> Tainted: G D > ^^^ > > This kernel has already oopsed before. Which means this oops message is > pretty much worthless. > > Ralf I'll try to recapture it over the weekend. This was the only output left in the serial console buffer when I reattached, as I had the console disconnected when it happened. Thanks! -- Joshua Kinard Gentoo/MIPS kumba@xxxxxxxxxx 4096R/D25D95E3 2011-03-28 "The past tempts us, the present confuses us, the future frightens us. And our lives slip away, moment by moment, lost in that vast, terrible in-between." --Emperor Turhan, Centauri Republic
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