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| jcole | how do i tell apt to not prompt with the "Are you sure you want to remove running kernel" message | 03:05 |
|---|---|---|
| infinity | That's not apt, that's the linux-image prerm. | 03:06 |
| jcole | damn | 03:07 |
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| BenC | lamont: ping | 06:40 |
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| zul | heylo | 01:45 |
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| zul | wohoo...i get to do a cluser at work | 02:34 |
| infinity | Is that a loser without a clue? | 02:38 |
| infinity | And is she cute? | 02:38 |
| zul | cluster even...need more coffee brb | 02:39 |
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| lamont | BenC: ack | 04:47 |
| BenC | lamont: hey | 04:48 |
| BenC | lamont: hppa (with it's binutils bug) is the only arch I don't have booting 2.6.17 now | 04:48 |
| BenC | lamont: any ideas who I can talk to, or what I can do to help this along? | 04:49 |
| BenC | lamont: is there any way to tell from userspace that a module is affected by this problem? | 04:51 |
| BenC | is there a relocation I can look for in objdump output or something? | 04:51 |
| lamont | it's the PCREL17 (or whatever it is) reloc that occurs more than 2^16 bytes into the section | 04:58 |
| BenC | I don't see any PCREL17, but I do see a lot of PCREL22's | 05:00 |
| BenC | which is the one mentioned in the kernel mentioned in the kernel output when it tried to load it | 05:01 |
| fabbione | BenC: that's hppa64, right? | 05:01 |
| BenC | yeah | 05:01 |
| fabbione | yeah you get PCREL17 on 32 | 05:01 |
| BenC | 00000000000002cc R_PARISC_PCREL22F printk | 05:01 |
| lamont | yeah - more bits on 64-bit, same issue | 05:02 |
| lamont | the issue is that the fixup location (thanks to ld -r) is more than 22-signedbits of displacement from the start of the section, and doesn't reach the target. | 05:03 |
| lamont | possible workarounds include compiling with long branches instead of stubs for all modules (then they fit, but it runs slower) | 05:03 |
| BenC | is that a linker option? | 05:04 |
| BenC | and can it be a per module option, or is it something that affects the ABI of the whole kernel? | 05:04 |
| fabbione | per module is a suicide | 05:05 |
| lamont | it's a compile-time option (not linker), which could be tied to all modules - note that there is a performance penalty for it | 05:06 |
| lamont | the other option is to quit using ld -r to link in each and every .o one by one into the module. | 05:07 |
| BenC | so this is also caused by the way the kernel is linking and the number of object files? | 05:08 |
| lamont | pretty much, yes. | 05:08 |
| lamont | the short summary of the bug is that "ld -r creates unlinkable sections because it doesn't keep the sections split, or add fixups as needed to be linkable" | 05:08 |
| lamont | if there's an option to ld -r to have it leave each .o in its own section, that'd solve the issue too | 05:09 |
| lamont | if gcc creates a section that is too large to link, it switches over to long-branches at the critical point. ld -r doesn't do that. | 05:10 |
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| BenC | lamont: can you check "man ld" and see if --unique sounds like what you were talking about? | 05:17 |
| === lamont mans | ||
| lamont | should do it, and shouldn't be that painful if it's just applied to modules. /me asks in #parsic | 05:18 |
| lamont | BenC: it certainly looks close enough to try a test with it | 05:21 |
| lamont | (mind you, just on the ld -r in modules...) | 05:21 |
| BenC | ok, I'm going to add it to LDFLAGS_MODULES and see | 05:22 |
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| BenC | hppa64-linux-gnu-ld -r --unique -o fs/jbd/jbd.o fs/jbd/transaction.o fs/jbd/commit.o fs/jbd/recovery.o fs/jbd/checkpoint.o fs/jbd/revoke.o fs/jbd/journal.o | 05:28 |
| BenC | well, that's what I got it to do, so let's see if it does the right thing | 05:28 |
| === lamont crosses digits | ||
| BenC | going to take 30 minutes to do this full build, I'll keep you posted | 05:37 |
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| === lamont tends to kernel-team moderation tasks... oops | ||
| lamont | Subject: I don't want the whole world, just your half | 05:45 |
| lamont | there... nothing more than 4 weeks old... sigh | 05:50 |
| lamont | fabbione: zul: I might have changed the moderator password for kernel-{teams,bugs} - if so, holler and I'll send you both the new one... (since you're listed as moderators...) | 05:52 |
| fabbione | lamont: you can remove me please | 05:53 |
| fabbione | i don't bash the kernel enough to handle the lists | 05:53 |
| lamont | ok | 05:53 |
| lamont | fabbione: fired. | 05:54 |
| lamont | er, removed | 05:54 |
| lamont | (just from moderation) | 05:54 |
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| fabbione | lamont: ehhehe | 05:54 |
| zul | lamont: i dont think i ever had the password | 05:59 |
| zul | yay...dpkg-deb: building package `linux-image-2.6.10-6-k7-smp' in `../linux-image-2.6.10-6-k7-smp_2.6.10-34.18_i386.deb'. | 06:02 |
| lamont | zul: that's kinda old... | 06:04 |
| lamont | zul: you want the moderation passwd? | 06:04 |
| zul | sure...send me any email | 06:04 |
| lamont | will do in a bit | 06:05 |
| zul | okie dokie | 06:05 |
| zul | lamont: yeah i know its old but 34.18 is kind of newish | 06:05 |
| lamont | heh | 06:05 |
| === lamont back in a few | ||
| zul | i have to boot it when i get home tonight | 06:06 |
| BenC | you probably wont get much functionality out of it, but as long as it boots, that should be a good test | 06:14 |
| zul | im just going to install qemu and get it to boot | 06:15 |
| zul | it only built the x86 ones though | 06:15 |
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| BenC | lamont: I see some changes in the relocation tables (references to new .# sections) | 06:36 |
| BenC | but this keeps me from being optimistic | 06:36 |
| lamont | sounds promising | 06:36 |
| BenC | root@hippo:~# hppa64-linux-gnu-objdump -r /lib/modules/2.6.15-23-hppa64-smp/kernel/fs/ocfs2/ocfs2.ko | grep PCREL | wc -l | 06:36 |
| BenC | 3521 | 06:36 |
| BenC | root@hippo:~# hppa64-linux-gnu-objdump -r /org/ubuntu-2.6/debian/build/build-hppa64-smp/fs/ocfs2/ocfs2.ko | wc -l | 06:36 |
| BenC | 21781 | 06:36 |
| BenC | oops | 06:36 |
| BenC | last one should read ~3400 | 06:37 |
| lamont | having the PCREL22 fixups is fine... having them too far from the start of a section is bad | 06:37 |
| BenC | 3400 relocations is still > MAX_GOTS | 06:37 |
| BenC | but module.c wont allow a module with > 1023 PCREL's | 06:37 |
| lamont | oh... we should fix that. :-) | 06:37 |
| lamont | 4095 is still reasonable, no? | 06:38 |
| BenC | sure :) | 06:38 |
| BenC | I'll see if the relocations even got fixed up right in a minute | 06:38 |
| BenC | boot in progress | 06:44 |
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| BenC | zul: Don't worry about dapper security, I'm working on it now | 08:49 |
| zul | ok | 08:49 |
| zul | ill worry about the next one | 08:49 |
| zul | BenC: for the next dapper security should i just send a patch to you or how is that going to work for git? | 08:51 |
| BenC | nah, git tree that I can pull from | 08:52 |
| zul | ok | 08:52 |
| BenC | or use git to create a patch set that I can pull in with git-applymbox like I do with crimsun's sound stuff | 08:52 |
| crimsun | (git-format-patch) | 08:53 |
| zul | but ill still be collecting little trival patches as well | 08:53 |
| zul | build it, upload it and then push patches to you? | 08:54 |
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| zul | or something like that | 08:56 |
| BenC | dapper is so much easier for CVE's | 08:57 |
| BenC | git-cherry-pick is my friend | 08:58 |
| zul | yeah i know..hoary is a pain in the ass breezy will be a bit better dapper will be easy (in theory) | 08:58 |
| zul | oooo...polygamy is legal in canada now | 08:59 |
| zul | well not legal recognized.. | 08:59 |
| BenC | polygamy? | 09:00 |
| BenC | poly gambling? | 09:01 |
| zul | polygamy...multiple wives | 09:01 |
| BenC | oh | 09:01 |
| BenC | it sort of legal in the US if you got them all from another country, but not recognized on taxes and such :) | 09:01 |
| zul | its recognized for taxes in canada now.. | 09:02 |
| BenC | there's a minimart owner near hear that has like 3 wives he brought with him from some mideast country | 09:02 |
| BenC | s/hear/here/ | 09:02 |
| BenC | they never speak, they just take care of the 10 kids running around | 09:02 |
| zul | mean, *buntu have certainly raised the bar, so more bugs is pretty much a reflection of that | 09:02 |
| zul | oops.. | 09:03 |
| crimsun | (thanks ;-) | 09:03 |
| zul | http://cnews.canoe.ca/CNEWS/Politics/2006/05/31/1608364-sun.html | 09:03 |
| zul | crimsun: no probs | 09:03 |
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| zul | heylo | 11:58 |
| zul | BenC: ping | 11:59 |
| BenC | zul: polongy | 11:59 |
| zul | 34.18 boots | 11:59 |
| BenC | swee | 11:59 |
| zul | er...2.6.10 yay! | 11:59 |
| BenC | t | 11:59 |
| zul | the 686 image at least | 11:59 |
| zul | ill have to modify my changelog and ill do an upload is there anything else i have to do | 12:00 |
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