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SubjectRe: [BUG] 2.6.29-rc2-git1 to -rc5: libata lockup on boot, LED solid, 100% CPU
Andreas Mohr writes:
> Hello all,
>
> My Inspiron 8000 ICH2 (i810) P3/700 UP has a hard time booting 2.6.29 things:
>
> [loaded init, shell stuff]
> ...
> ata1.00: configured for UDMA/100
> ata1.01: configured for UDMA/33
> ata1: EH complete
> ...
> Uniform CD-ROM driver Revision: 3.20
> [LAST LINE, FULL STOP]
> ---> hangs with IDE LED solidly on! <---
>
> NOTE: kernel did NOT hang when accidentally running rc2-git1 w/o any modules loaded!
> (IOW, probably a module-related hang)
> disabling sr_mod.ko will make a boot proceed a tiny bit, then hang anyway
>
> Could be mutex deadlock (CPU hot, 100%?)
> no log errors whatsoever
> latest known working: .28-rc6 (admittedly somewhat old; DOES work currently)
> earliest known buggy: -rc2-git1, -rc4 also, -rc5 also
> no SysRq available (notebook keys: no workey, /proc/sysrq obviously
> not available either)
>
> Should I test 2.6.28.5? Every build will take two hours though...
> Not ATA-SFF 32bit bug problem, right? (already committed?)
> http://marc.info/?l=linux-kernel&m=123254501314058&w=2

To me it looks like the 32-bit PIO bug. The patch you cited above was
just the first to identify the issue. This is still unfixed in 29-rc5.
Please test Sergei's latest proposed patch posted yesterday to linux-ide.


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