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Bug 265714 - sys-kernel/gentoo-sources-2.6.29-r1 crashes on SPARC64 (Already known problem)
Summary: sys-kernel/gentoo-sources-2.6.29-r1 crashes on SPARC64 (Already known problem)
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Core system (show other bugs)
Hardware: Sparc64 Linux
: High critical (vote)
Assignee: Gentoo Kernel Bug Wranglers and Kernel Maintainers
URL:
Whiteboard:
Keywords: InVCS
Depends on:
Blocks:
 
Reported: 2009-04-11 00:11 UTC by 404 Error
Modified: 2009-04-29 23:04 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---

Attachments
Patch for arch/sparc/include/asm/tlb_64.h (sparc64_tlb_crash.patch,440 bytes, text/plain)
2009-04-11 03:44 UTC, 404 Error 		Details
View All Add an attachment (proposed patch, testcase, etc.)

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Description 404 Error 2009-04-11 00:11:59 UTC 
When booted, this kernel gracefully dies with the following message:

[   51.057605] kernel BUG at /usr/src/linux-2.6.29-gentoo-r1/arch/sparc/include/asm/tlb_64.h:48!
[   51.180131]               \|/ ____ \|/
[   51.180137]               "@'/ .. \`@"
[   51.180141]               /_| \__/ |_\
[   51.180146]                  \__U_/
[   51.414793] rc(455): Kernel bad sw trap 5 [#1]
[   51.483342] TSTATE: 0000004411001607 TPC: 00000000004b0514 TNPC: 00000000004b0518 Y: 00000000    Not tainted
[   51.623024] TPC: <unmap_region+0x44/0x140>
[   51.687070] g0: 0000000000038b5c g1: 0000000000000000 g2: 000000000081adf0 g3: 00000000008393b8
[   51.811915] g4: fffff800cf1350a0 g5: fffff800cf63c000 g6: fffff800cd84c000 g7: 000001ff047ffc68
[   51.936818] o0: 0000000000000064 o1: 00000000007b6b78 o2: 0000000000000030 o3: 00000000f7dfb26c
[   52.061802] o4: 0000000000000000 o5: fffff800ce003cc0 sp: fffff800cd84f451 ret_pc: 00000000004b050c
[   52.191537] RPC: <unmap_region+0x3c/0x140>
[   52.255930] l0: fffff800cfec63c8 l1: fffff800cd803760 l2: 0000000000821de8 l3: 0000000000851e40
[   52.381193] l4: 0000000000100100 l5: fffff800ce03e868 l6: 0000000000026c00 l7: 0000000000023970
[   52.506448] i0: fffff800cd824ae0 i1: fffff800cd81cc60 i2: fffff800cd803810 i3: 00000000f7f0c000
[   52.631845] i4: 00000000f7f0e000 i5: fffffffc00000000 i6: fffff800cd84f521 i7: 00000000004b17fc
[   52.757152] I7: <do_munmap+0x26c/0x2e0>
[   52.818514] Caller[00000000004b17fc]: do_munmap+0x26c/0x2e0
[   52.902638] Caller[00000000004b1894]: SyS_munmap+0x24/0x40
[   52.985622] Caller[0000000000406214]: linux_sparc_syscall32+0x34/0x40
[   53.081195] Caller[00000000f7d05608]: 0xf7d05608
[   53.152536] Instruction DUMP: 92102030  7ffde531  90122378 <91d02005> f0708005  c2586048  d0584000  4004fbf4  900a2003

Reproducible: Always

Steps to Reproduce:
1. Emerge gentoo-sources-2.6.29-r1
2. Configure, compile and install your kernel as usual
3. Reboot... et voilà ! ;-)





Known problem:

http://www.gossamer-threads.com/lists/linux/kernel/1058996?page=last

Will try the suggested patch
Comment 1 404 Error 2009-04-11 02:30:02 UTC 
Suggested modification works wonderfully !
Comment 2 404 Error 2009-04-11 03:44:58 UTC 
Created attachment 187947 [details]
Patch for arch/sparc/include/asm/tlb_64.h
Comment 3 EoD 2009-04-28 23:41:42 UTC 
I have a Sun Blade 100 (UltraSPARC IIe) with exactly the same problem.
And the sparc64_tlb_crash.patch seems to fix the problem without any disadvantages so far. 
Is this patch going to make it into the gentoo git sources?
Comment 4 Mike Pagano gentoo-dev 2009-04-29 00:40:51 UTC 
When you see the keyword InSVN, it means it will be in the next genpatches, but it actuality, this patch made it to 2.6.29.2.

I plan on rolling and release gentoo-sources-2.6.29-r2 real soon(tm). This will have 2.6.29.2.
Comment 5 Mike Pagano gentoo-dev 2009-04-29 23:04:27 UTC 
Released in linux 2.6.29.2 included in gentoo-sources-2.6.29-r2