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| 02:54.38 | detule | i think linux screwed something up for us in fs/ |
| 02:54.48 | detule | s/linux/linus/ |
| 03:00.57 | jonpry | any idea what? |
| 03:03.24 | detule | i put some printks in SYSCALL_DEFINE1(chroot, const char __user *, filename) |
| 03:03.27 | detule | in fs/open.c |
| 03:03.55 | detule | it gets down all the way to path_put |
| 03:05.09 | jonpry | as a result of error? |
| 03:05.19 | detule | no |
| 03:05.21 | jonpry | that is a goto target for fail |
| 03:05.33 | detule | calls set_fs_root |
| 03:05.40 | jonpry | ic |
| 03:05.54 | jonpry | so if that all works then why the segfault? |
| 03:06.13 | detule | no idea but linus has a bunch of commits to fs |
| 03:06.17 | detule | in 3.4 |
| 03:06.51 | jonpry | i want to put an strace binary in initrd. so we can see what syscall it actually blows up on |
| 03:07.07 | detule | i thought about bisecting |
| 03:07.15 | jonpry | also i wonder why user_debug is not working in such a spectacular way |
| 03:07.25 | detule | problem is evey time i git bisect i have to apply our patches on top and that won't work |
| 03:07.39 | jonpry | yeah that would be trouble |
| 03:07.57 | detule | only 400 or so commits to fs to bisect 8, 9 steps |
| 03:08.04 | jonpry | strace is going to do the trick anyways |
| 03:08.12 | detule | yeah strace sounds like a winner |
| 03:08.37 | jonpry | since we don't patch fs in theory you can bisect only that subdir |
| 03:08.55 | detule | i thought i tried that git start fs/ and it reported +400 commits |
| 03:09.02 | jonpry | however set_fs_root must fail |
| 03:09.17 | jonpry | cause my init script definitely has the old root after chroot segfault |
| 03:09.18 | detule | git bisect start fs that is |
| 03:10.07 | jonpry | you need a real linux tree. run bisect on it. then copy the fs dir over our tree |
| 03:10.35 | detule | i think i'll wait to see the outcome of your strace run first :p |
| 03:10.51 | jonpry | i need an armv6 strace binary |
| 03:11.56 | detule | busybox doesnt have it |
| 03:11.59 | detule | ? |
| 03:12.43 | jonpry | if it does then busybox strace chroot /rfs /init should work |
| 03:12.46 | jonpry | bbl |
| 03:26.42 | jonpry | detule, you didn't happen to fix i2c did you? |
| 03:28.11 | detule | nope haven't looked at it |
| 03:28.47 | detule | what's wrong with it? |
| 03:32.14 | detule | gotta get some sleep ttyl |
| 03:37.46 | jonpry | kconfig/makefile i think |
| 03:46.34 | jonpry | no strace in busybox. but i fixed usb |
| 03:46.42 | jonpry | so now i can use it like rhobuntu |
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| 17:49.37 | jonpry | detule, ping |
| 17:54.24 | detule | hey jonpry |
| 17:54.42 | jonpry | so it has nothing to do with chroot |
| 17:54.53 | detule | ugh, i just cross compiled strace statically |
| 17:55.02 | jonpry | oh i downloaded one |
| 17:55.07 | detule | damnit |
| 17:55.51 | detule | whatever my binary is cooler |
| 17:55.56 | jonpry | should have pinged earlier |
| 17:55.58 | jonpry | :) |
| 17:56.06 | detule | so what's the matter |
| 17:56.18 | jonpry | not totally sure. probably tls |
| 17:56.28 | jonpry | stuff linked with bionic just doesn't run |
| 17:57.00 | detule | your static chroot ran fine? |
| 17:57.11 | jonpry | chroot works fine |
| 17:57.15 | jonpry | try chroot / |
| 17:57.18 | detule | oh it fails on whatever is next |
| 17:57.19 | jonpry | then chroot /rfs |
| 17:57.23 | jonpry | yup |
| 17:57.56 | detule | didn't you have this problem with .39 back in the day |
| 17:58.07 | detule | android binaries just refusing to run |
| 17:58.07 | jonpry | yeah it was tls |
| 17:58.23 | detule | you remember what you did(obious question) to fix it |
| 17:58.28 | jonpry | and we could recompile android with some options that make it work |
| 17:58.41 | jonpry | the patch is applied it just isn't working anymore |
| 17:59.01 | jonpry | i think linus made good on his promise to move the vectors table |
| 17:59.48 | jonpry | there are a few of patches that could be putting the kibosh on tls |
| 18:03.00 | detule | so those binaries in rootfs that are not executing |
| 18:03.07 | detule | that's just the busybox in rootfs |
| 18:03.12 | zeusk|away | what is the difference between "dmb" compared to dsb ? |
| 18:03.14 | detule | vs. the busybox in initrd that must be static |
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| 18:07.48 | jonpry | the busybox in rootfs is toolbox |
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| 18:08.41 | jonpry | and it may or may not be static. doesn't really matter. its bionic vs some other libc |
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| 18:09.32 | detule | last thing in my strace is set_tls |
| 18:10.21 | jonpry | sounds about right |
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| 19:16.54 | zeusk | stupid help, what is the size of unsigned long on arm ? |
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| 19:20.34 | jonpry | 32bit |
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| 19:41.35 | zeusk | thanks jonpry |
| 19:50.10 | Franck78 | hi zeusk |
| 20:00.27 | zeusk | hey |
| 20:00.36 | zeusk | (bit late) |
| 20:00.44 | Franck78 | ;-) |
| 20:01.07 | Franck78 | well have done something with IDA and spl3.03 |
| 20:01.30 | zeusk | what else ? |
| 20:02.34 | Franck78 | euh nothing. just want to know if it is usefull or useless to you ! |
| 20:02.57 | zeusk | oh, yeah I'm reffering it for some work in lk |
| 20:03.11 | zeusk | it's a lot more helpful than i thought it would be |
| 20:03.15 | zeusk | thanks :D |
| 20:04.07 | Franck78 | if you discover some 'data' tell me. |
| 20:04.24 | Franck78 | I'm working on it (for fun now) |
| 20:04.41 | zeusk | btw, i have some important stuff for you, I'll email you that before going to sleep |
| 20:05.06 | Franck78 | 22h here.... |
| 20:05.25 | zeusk | 01:40 here :p |
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| 23:40.32 | detule | team xposed team win hard to keep track of the team names alone these days, let alone membership |