7299 2015-02-08 20:58:42 +0000 "bitbake -g -u depexp <package>" segfaults and hogs memory while connecting to server through ssh 2015-03-26 06:44:31 +0000 1 1 7 Build System, Metadata & Runtime BitBake bitbake unspecified x86 Multiple VERIFIED FIXED Medium+ critical 1.8 1 maxin.baby.john maxin.baby.john alexandru.c.georgescu bluelightning poky.bs.watcher poky.watcher alexandru.c.georgescu --- --- Don't know oldest_to_newest 48627 0 maxin.baby.john 2015-02-08 20:58:42 +0000 Executing "bitbake -g -u depexp <package>" in the Yocto build server connected through SSH resulted in Segfault. We can re-create the same scenario in local machine with these steps: $ cd poky $ source oe-init-build-env $ unset DISPLAY $ bitbake -g -u depexp python Segmentation fault (core dumped) Even-though, the program seems to be segfaulted, this creates a number of background processes which continues to run: $ ps ax|grep python 12074 pts/0 Dl 7:52 python /home/maxin/poky/bitbake/bin/bitbake -g -u depexp python 12729 pts/0 Dl 3:08 python /home/maxin/poky/bitbake/bin/bitbake -g -u depexp python 12733 pts/0 Z 0:00 [python] <defunct> 12735 pts/0 Sl 0:58 python /home/maxin/poky/bitbake/bin/bitbake -g -u depexp python 12736 pts/0 Sl 0:58 python /home/maxin/poky/bitbake/bin/bitbake -g -u depexp python 12737 pts/0 Sl 0:58 python /home/maxin/poky/bitbake/bin/bitbake -g -u depexp python 12738 pts/0 Sl 0:59 python /home/maxin/poky/bitbake/bin/bitbake -g -u depexp python While trying to debug the segfault, I have executed this command a number of times in the server and that unintentionally consumed a lot of memory which kicked the OOM killer. That virtually took the server down as it killed the ssh server. (This script can start the OOM killer in my i7 machine as a normal user) #!/bin/bash for i in {1..50} do rm bitbake.lock bitbake -g -u depexp python done 48628 1 2400 maxin.baby.john 2015-02-08 21:11:44 +0000 Created attachment 2400 proposed fix Check whether DISPLAY is set and it functions as expected. 48847 2 maxin.baby.john 2015-02-16 09:17:33 +0000 Fix accepted: http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=b427750a5d8e2a2e1a675f68dea250eb25e94c8e 49780 3 alexandru.c.georgescu 2015-03-26 06:44:31 +0000 verified with master:5c76cebc24675edb3dff473fce9b67cedff615db 2400 2015-02-08 21:11:44 +0000 2015-02-08 21:11:44 +0000 proposed fix 0001-depexp.py-Fix-segfault-if-DISPLAY-is-not-set.patch text/plain 1182 maxin.baby.john RnJvbSBiNzc5MzYxMzg3YWViMTg2N2RlZTEwNzlmNjlkZDFiNzI1YTYwYTNlIE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiAiTWF4aW4gQi4gSm9obiIgPG1heGluLmpvaG5AZW5lYS5jb20+ CkRhdGU6IFN1biwgOCBGZWIgMjAxNSAyMToxNTozMyArMDEwMApTdWJqZWN0OiBbUEFUQ0hdIGRl cGV4cC5weTogRml4IHNlZ2ZhdWx0IGlmIERJU1BMQVkgaXMgbm90IHNldAoKYml0YmFrZSAtZyAt dSBkZXBleHAgPHBhY2thZ2U+IHNlZ2ZhdWx0cyB3aGVuIERJU1BMQVkgaXMgbm90IHNldApwcm9w ZXJseS4gRml4IGl0IHdpdGggYSBwcm9wZXIgY2hlY2suCgpTaWduZWQtb2ZmLWJ5OiBNYXhpbiBC LiBKb2huIDxtYXhpbi5qb2huQGVuZWEuY29tPgotLS0KIGJpdGJha2UvbGliL2JiL3VpL2RlcGV4 cC5weSB8IDcgKysrKysrKwogMSBmaWxlIGNoYW5nZWQsIDcgaW5zZXJ0aW9ucygrKQoKZGlmZiAt LWdpdCBhL2JpdGJha2UvbGliL2JiL3VpL2RlcGV4cC5weSBiL2JpdGJha2UvbGliL2JiL3VpL2Rl cGV4cC5weQppbmRleCAwYzcxYTNlLi45ZjE3MDFmIDEwMDY0NAotLS0gYS9iaXRiYWtlL2xpYi9i Yi91aS9kZXBleHAucHkKKysrIGIvYml0YmFrZS9saWIvYmIvdWkvZGVwZXhwLnB5CkBAIC0xNyw2 ICsxNyw3IEBACiAjIHdpdGggdGhpcyBwcm9ncmFtOyBpZiBub3QsIHdyaXRlIHRvIHRoZSBGcmVl IFNvZnR3YXJlIEZvdW5kYXRpb24sIEluYy4sCiAjIDUxIEZyYW5rbGluIFN0cmVldCwgRmlmdGgg Rmxvb3IsIEJvc3RvbiwgTUEgMDIxMTAtMTMwMSBVU0EuCiAKK2ltcG9ydCBzeXMKIGltcG9ydCBn b2JqZWN0CiBpbXBvcnQgZ3RrCiBpbXBvcnQgUXVldWUKQEAgLTIxNSw2ICsyMTYsMTIgQEAgZGVm IG1haW4oc2VydmVyLCBldmVudEhhbmRsZXIsIHBhcmFtcyk6CiAgICAgICAgIHByaW50KCJYTUxS UEMgRmF1bHQgZ2V0dGluZyBjb21tYW5kbGluZTpcbiAlcyIgJSB4KQogICAgICAgICByZXR1cm4K IAorICAgIHRyeToKKyAgICAgICAgZ3RrLmluaXRfY2hlY2soKQorICAgIGV4Y2VwdDoKKyAgICAg ICAgcHJpbnQgIlBsZWFzZSBzZXQgRElTUExBWSB2YXJpYWJsZSBiZWZvcmUgcnVubmluZyB0aGlz IGNvbW1hbmQuIgorICAgICAgICBzeXMuZXhpdCgxKQorCiAgICAgc2h1dGRvd24gPSAwCiAKICAg ICBndGtndWkgPSBndGt0aHJlYWQoc2h1dGRvd24pCi0tIAoxLjkuMQoK