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On 26/08/14 11:13 AM, Matthew Thode wrote: |
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> On 08/26/2014 05:23 AM, Marcin Mirosław wrote: |
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>> Hello! |
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>> I suspect that I've got problem with hardened-sources in KVM VM. I'm not |
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>> sure if I should fill a bug for this. I'd like to post it here before |
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>> using b.g.o. |
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>> I've got VM (it's KVM with qemu-2.0.0-r1), with |
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>> hardened-sources-3.15.{5-r2,8}. I'm observing a kind of memory |
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>> corruption. After a couple of hours of uptime I'm starting seeing random |
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>> segfaults, general protection traps especially when process uses a lot |
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>> of CPU and do many I/O operations (masscheck scripts written in perl for |
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>> spamassasin rules). |
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>> In log I've got e.g.: |
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>> |
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>> 2014-08-25T13:05:23.243062+02:00 mohikanin kernel: [45571.239703] PAX: |
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>> From 88.198.102.195: execution attempt in: (null), 00000000-00000000 |
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>> 00000000 |
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>> 2014-08-25T13:05:23.243088+02:00 mohikanin kernel: [45571.239707] PAX: |
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>> terminating task: /usr/libexec/dovecot/pop3-login(pop3-login):2507, |
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>> uid/euid: 105/105, PC: (nil), SP: 000003a8574e4c00 |
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>> 2014-08-25T13:05:23.243093+02:00 mohikanin kernel: [45571.239709] PAX: |
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>> bytes at PC: ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? |
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>> 2014-08-25T13:05:23.243095+02:00 mohikanin kernel: [45571.239735] PAX: |
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>> bytes at SP-8: 0000000000000000 0000000000000000 00000059c6deceb0 |
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>> 0000000000000000 00000316027bc540 0000000000000001 000003160271dbb5 |
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>> 0000000000000000 0000000000000000 0000000000000000 0000000000000000 |
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>> 2014-08-25T13:24:42.943001+02:00 mohikanin kernel: [46730.931353] traps: |
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>> spamd child[19681] general protection ip:2c572b6e163 sp:3ca7d000be0 |
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>> error:0 in libc-2.19.so[2c572aee000+19e000] |
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>> 2014-08-25T13:24:42.943007+02:00 mohikanin kernel: [46730.931371] grsec: |
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>> Segmentation fault occurred at (nil) in /usr/sbin/spamd[spamd |
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>> child:19681] uid/euid:999/999 gid/egid:100/100, parent |
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>> /usr/sbin/spamd[/usr/sbin/spamd:1255] uid/euid:0/0 gid/egid:0/0 |
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>> 2014-08-25T13:55:22.383032+02:00 mohikanin kernel: [48570.375917] traps: |
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>> freshclam[6594] general protection ip:344cceb368d sp:3d5f5ced520 error:0 |
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>> in libclamav.so.6.1.23[344ccdf1000+9d1000] |
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>> 2014-08-25T13:55:22.383050+02:00 mohikanin kernel: [48570.375968] grsec: |
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>> Segmentation fault occurred at (nil) in |
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>> /usr/bin/freshclam[freshclam:6594] uid/euid:104/104 gid/egid:115/115, |
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>> parent /usr/bin/freshclam[freshclam:1159] uid/euid:104/104 gid/egid:115/115 |
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>> |
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>> Yesterday I switched kernel to gentoo-sources-3.14.14 and I don't see |
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>> any unwanted behavior. This is why I suspect hardened-sources. Should I |
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>> fill a bug? What should I do help find out the root of problem? |
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>> (gcc is: gcc version 4.7.3 (Gentoo Hardened 4.7.3-r1 p1.4, pie-0.5.5) , |
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>> with ld.gold) |
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>> |
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>> Marcin |
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>> |
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> |
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> I'll test a 3.15.10-r1 kernel today sometime, anything I can do to |
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> reproduce specifically? |
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> |
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> |
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|
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Run emerge boost. My setup is with PORTAGE_TMPDIR to hard drive, maybe |
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that affects repro. |
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