Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26

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From: Linus Torvalds
Date: Sunday, August 24, 2008 - 5:51 pm

On Sun, 24 Aug 2008, David Greaves wrote:

Well, regardless, I think it would be good to fill in the hardware info, 
especially wrt CPU data and the exact SATA controller you have.

There's another regression for SATA cold/hot boot issues, and while that 
one looks very different, and is probably not really related, it's still a 
good idea to try to see if we can match them up. See

	Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=11343
	Subject         : SATA Cold Boot Problems with 2.6.27-rc[23] on nVidia 680i
	Submitter       : Manny Maxwell <mannymax@mannymax.net>
	Date            : 2008-08-14 4:16 (10 days old)
	References      : http://marc.info/?l=linux-kernel&m=121868782917600&w=4

which actually has a patch, and which seems to work fine in 2.6.26 (so not 
only is failure pattern different, the point were it starts is different). 

But regardless of the big differences, it does seem to point to some 
weakness in SATA initialization. But is it limited to _that_ particular 
SATA controller, or just a few ones? Or a generic issue? Without more 
reports to really find a pattern, I don't think we have a clue, and the 
two may be _totally_ unrelated in all ways, but it would be good to at 
least report and log the information you have..

Oh, I just noticed that your dmesg _does_ mention sata_sil and sata_via, 
so we know which of two drivers it would be, at least. Not the nVidia one.

However, there's been tons of changes in soem core functions: both the 
reset handling and the wait-for-ready has changed and caused lots of churn 
across most drivers in between 2.6.25 and 2.6.26. 


I think it would be good to try to bisect. It could be something that is 
really just limited to that particular machine (maybe it really is some 
flaky hardware that just triggers some timing changes), but more likely it 
isn't. So the more information, the better. So keep the thing open as long 
as somebody is willing to try to gather more info, by all means.

		Linus
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Messages in current thread:
2.6.27-rc4-git1: Reported regressions from 2.6.26, Rafael J. Wysocki, (Sat Aug 23, 11:07 am)
[Bug #11141] no battery or DC status - Dell i1501, Rafael J. Wysocki, (Sat Aug 23, 11:07 am)
[Bug #11191] 2.6.26-git8: spinlock lockup in c1e_idle(), Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11207] VolanoMark regression with 2.6.27-rc1, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11220] Screen stays black after resume, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11219] KVM modules break emergency reboot, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11215] INFO: possible recursive locking detected ps2 ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11210] libata badness, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11209] 2.6.27-rc1 process time accounting, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11237] corrupt PMD after resume, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11224] Only three cores found on quad-core machine., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11230] Kconfig no longer outputs a .config with fres ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11271] BUG: fealnx in 2.6.27-rc1, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11264] Invalid op opcode in kernel/workqueue, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11254] KVM: fix userspace ABI breakage, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11282] Please fix x86 defconfig regression, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11279] 2.6.27-rc0 Power Bugs with HP/Compaq Laptops, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11276] build error: CONFIG_OPTIMIZE_INLINING=y cause ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11272] BUG: parport_serial in 2.6.27-rc1 for NetMos ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11334] myri10ge: use ioremap_wc: compilation failure ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11336] 2.6.27-rc2:stall while mounting root fs, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11335] 2.6.27-rc2-git5 BUG: unable to handle kernel ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11308] tbench regression on each kernel release from ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmalloc.c ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11340] LTP overnight run resulted in unusable box, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11343] SATA Cold Boot Problems with 2.6.27-rc[23] on ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11358] net: forcedeth call restore mac addr in nv_sh ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11357] Can not boot up with zd1211rw USB-Wlan Stick, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11356] Linux 2.6.27-rc3 - build failure: undefined r ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11355] Regression in 2.6.27-rc2 when cross-building ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11354] AMD Elan regression with 2.6.27-rc3, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11380] lockdep warning: cpu_add_remove_lock at:cpu_m ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11379] char/tpm: tpm_infineon no longer loaded for H ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11361] my servers with nvidia mcp55 nic don't work w ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11360] mpc8xxx_wdt.c doesn't build modular, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11401] pktcdvd: BUG, NULL pointer dereference in pkt ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11398] hda_intel: IRQ timing workaround is activated ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11388] 2.6.27-rc3 warns about MTRR range; only 3 of ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11382] e1000e: 2.6.27-rc1 corrupts EEPROM/NVM, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11405] 2.6.27-rc3 segfault on cold boot; not on warm ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11403] 2.6.27-rc2 USB suspend regression, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11402] skbuff bug?, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11404] BUG: in 2.6.23-rc3-git7 in do_cciss_intr, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11413] get_rtc_time() triggers NMI watchdog in hpet_ ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11409] build issue #564 for v2.6.27-rc4 : undefined ..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11407] suspend: unable to handle kernel paging request, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11410] SLUB list_lock vs obj_hash.lock..., Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
[Bug #11414] Random crashes with 2.6.27-rc3 on PPC, Rafael J. Wysocki, (Sat Aug 23, 11:10 am)
Re: [Bug #11210] libata badness, Jeff Garzik, (Sat Aug 23, 3:23 pm)
Re: [Bug #11271] BUG: fealnx in 2.6.27-rc1, Jeff Garzik, (Sat Aug 23, 3:26 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Linus Torvalds, (Sun Aug 24, 10:48 am)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Linus Torvalds, (Sun Aug 24, 11:03 am)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Linus Torvalds, (Sun Aug 24, 11:34 am)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Vegard Nossum, (Sun Aug 24, 11:43 am)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Linus Torvalds, (Sun Aug 24, 11:52 am)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Linus Torvalds, (Sun Aug 24, 11:58 am)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Linus Torvalds, (Sun Aug 24, 12:03 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Adrian Bunk, (Sun Aug 24, 12:23 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, David Greaves, (Sun Aug 24, 12:23 pm)
Re: [Bug #11254] KVM: fix userspace ABI breakage, Adrian Bunk, (Sun Aug 24, 12:27 pm)
Re: [Bug #11210] libata badness, Rafael J. Wysocki, (Sun Aug 24, 2:04 pm)
Re: [Bug #11334] myri10ge: use ioremap_wc: compilation fai ..., Rafael J. Wysocki, (Sun Aug 24, 2:05 pm)
Re: [Bug #11356] Linux 2.6.27-rc3 - build failure: undefin ..., Rafael J. Wysocki, (Sun Aug 24, 2:10 pm)
Re: [Bug #11379] char/tpm: tpm_infineon no longer loaded f ..., Rafael J. Wysocki, (Sun Aug 24, 2:12 pm)
Re: [Bug #11355] Regression in 2.6.27-rc2 when cross-build ..., Rafael J. Wysocki, (Sun Aug 24, 2:34 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Rafael J. Wysocki, (Sun Aug 24, 2:40 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, H. Peter Anvin, (Sun Aug 24, 5:16 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Benjamin Herrenschmidt, (Sun Aug 24, 5:48 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Linus Torvalds, (Sun Aug 24, 5:51 pm)
Re: [Bug #11254] KVM: fix userspace ABI breakage, Avi Kivity, (Mon Aug 25, 3:23 am)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Rafael J. Wysocki, (Mon Aug 25, 4:40 am)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Daniel J Blueman, (Mon Aug 25, 6:03 am)
Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmallo ..., Christoph Lameter, (Mon Aug 25, 3:07 pm)
Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmallo ..., Bernd Petrovitsch, (Wed Aug 27, 1:34 am)
Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmallo ..., Bernd Petrovitsch, (Wed Aug 27, 1:44 am)
Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmallo ..., Bernd Petrovitsch, (Wed Aug 27, 2:00 am)
Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmallo ..., Bernd Petrovitsch, (Wed Aug 27, 6:17 am)
Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmallo ..., Bernd Petrovitsch, (Wed Aug 27, 9:38 am)
Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmallo ..., Bernd Petrovitsch, (Wed Aug 27, 12:30 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Peter Osterlund, (Wed Aug 27, 1:17 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Linus Torvalds, (Wed Aug 27, 1:40 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Linus Torvalds, (Wed Aug 27, 1:45 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Linus Torvalds, (Wed Aug 27, 3:38 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, David Miller, (Wed Aug 27, 3:43 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Alexey Dobriyan, (Wed Aug 27, 3:45 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Linus Torvalds, (Wed Aug 27, 4:00 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Linus Torvalds, (Wed Aug 27, 4:12 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Linus Torvalds, (Wed Aug 27, 5:35 pm)
Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26, Christoph Hellwig, (Thu Aug 28, 6:52 am)
Subject: [RFC 1/1] cpumask: Provide new cpumask API, Mike Travis, (Thu Sep 25, 1:59 pm)