Messages in this thread | | | Date | Fri, 7 Mar 2008 08:23:05 +0100 | From | Ingo Molnar <> | Subject | Re: [regression]2.6.25-rc4: boot panic on alpha |
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[Cc:-ed FUJITA Tomonori who did the Alpha IOMMU changes - full report from Bob quoted below.]
Bob, does latest -git boot if you revert these 4 commits:
commit d5a4630a0daad241c761064295958554472ed491 Author: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Date: Tue Mar 4 14:28:58 2008 -0800
alpha: remove unused DEBUG_FORCEDAC define in IOMMU
commit cf5401454863df8e6dc3ebe8faad09141cbec187 Author: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Date: Tue Mar 4 14:28:57 2008 -0800
alpha: make IOMMU respect the segment boundary limits
commit 23d7e0390ab57cf15a5cfe8d6806192f0997e5a8 Author: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Date: Tue Mar 4 14:28:57 2008 -0800
alpha: IOMMU had better access to the free space bitmap at only one place
commit 3c5f1def7dd50b792f56dcf7378c2684c06947f3 Author: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Date: Tue Mar 4 14:28:54 2008 -0800
alpha: convert IOMMU to use ALIGN()
Ingo
* Bob Tracy <rct@frus.com> wrote:
> The regression is relative to 2.6.25-rc1 + timer fixes (added when > I reported the problems with 2.6.25-rc1 relative to 2.6.24). I haven't > tried -rc2 or -rc3. > > Might be related to similar reports I've seen, but wanted to add the > Alpha platform to the list. The -rc4 kernel boots, but at some point > following initialization of the SCSI layer, there's a panic with enough > diagnostic output that a 50-line screen can't hold it all. Unfortunately, > the system logging isn't active, so nothing gets captured. > > The panic is completely reproducible. The "Code" line at the bottom > of the panic output is > > 44220001 4821f621 4821b681 4821f62b f420004f 00000081 <0000009b> 0066c012 > > The first line of the "Trace" section is > > [<fffffc000031a41f>] iommu_arena_alloc+0x64/0xe0 > > Platform is an Alpha PWS 433au. gcc is version 4.1.2 (Debian 4.1.1-21). > > -- > ------------------------------------------------------------------------ > Bob Tracy | "I was a beta tester for dirt. They never did > rct@frus.com | get all the bugs out." - Steve McGrew on /. > ------------------------------------------------------------------------ > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
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