{"action":"created","issue":{"url":"https://api.github.com/repos/BitcoinUnlimited/BitcoinUnlimited/issues/99","repository_url":"https://api.github.com/repos/BitcoinUnlimited/BitcoinUnlimited","labels_url":"https://api.github.com/repos/BitcoinUnlimited/BitcoinUnlimited/issues/99/labels{/name}","comments_url":"https://api.github.com/repos/BitcoinUnlimited/BitcoinUnlimited/issues/99/comments","events_url":"https://api.github.com/repos/BitcoinUnlimited/BitcoinUnlimited/issues/99/events","html_url":"https://github.com/BitcoinUnlimited/BitcoinUnlimited/issues/99","id":178654939,"number":99,"title":"Node crashed with segfault in bitcoin-httpworker","user":{"login":"nomnombtc","id":1503969,"avatar_url":"https://avatars.githubusercontent.com/u/1503969?v=3","gravatar_id":"","url":"https://api.github.com/users/nomnombtc","html_url":"https://github.com/nomnombtc","followers_url":"https://api.github.com/users/nomnombtc/followers","following_url":"https://api.github.com/users/nomnombtc/following{/other_user}","gists_url":"https://api.github.com/users/nomnombtc/gists{/gist_id}","starred_url":"https://api.github.com/users/nomnombtc/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nomnombtc/subscriptions","organizations_url":"https://api.github.com/users/nomnombtc/orgs","repos_url":"https://api.github.com/users/nomnombtc/repos","events_url":"https://api.github.com/users/nomnombtc/events{/privacy}","received_events_url":"https://api.github.com/users/nomnombtc/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":5,"created_at":"2016-09-22T16:16:41Z","updated_at":"2016-09-22T21:22:39Z","closed_at":null,"body":"Hello,\r\n\r\nI switched one of my nodes from Classic to BitcoinUnlimited about a week  ago, and today it crashed\r\nwith this in dmesg:\r\n```\r\n[2474116.108519] bitcoin-httpwor[28515]: segfault at 30 ip 00007fc49ff3c452 sp 00007fc49c48c628 error 4 in\r\nlibstdc++.so.6.0.21[7fc49fe99000+16b000]\r\n```\r\n\r\nThe only thing which is maybe uncommon about this server, is it only has intel atom cpu with 2GB of ram and it sets this when bitcoind starts:\r\n`export MALLOC_ARENA_MAX=1`\r\n\r\nAs I've read this [may help when low on ram](https://gist.github.com/laanwj/efe29c7661ce9b6620a7#linux-specific), but that was the same with Classic have not changed anything.\r\n\r\nAnd there is a python script which scrapes rpc info into collectd every 30 seconds (I guess this may call the http worker...), but the same script was running with Classic for some months without any problem.\r\n\r\nBitcoinUnlimited was built from source, with the bu0.12.1c release. Distro is Slackware64-14.2.\r\n\r\nthere was nothing in debug.log, last entry is just a timestamp without log message:\r\n```\r\n2016-09-22 14:07:40 connect() to 91.234.48.232:8333 failed after select(): Connection refused (111)\r\n2016-09-22 14:08:07 connect() to 91.234.48.232:8333 failed after select(): Connection refused (111)\r\n2016-09-22 14:08:20\r\n```\r\n\r\nLet me know if I can provide any other info."},"comment":{"url":"https://api.github.com/repos/BitcoinUnlimited/BitcoinUnlimited/issues/comments/249031941","html_url":"https://github.com/BitcoinUnlimited/BitcoinUnlimited/issues/99#issuecomment-249031941","issue_url":"https://api.github.com/repos/BitcoinUnlimited/BitcoinUnlimited/issues/99","id":249031941,"user":{"login":"gandrewstone","id":89979,"avatar_url":"https://avatars.githubusercontent.com/u/89979?v=3","gravatar_id":"","url":"https://api.github.com/users/gandrewstone","html_url":"https://github.com/gandrewstone","followers_url":"https://api.github.com/users/gandrewstone/followers","following_url":"https://api.github.com/users/gandrewstone/following{/other_user}","gists_url":"https://api.github.com/users/gandrewstone/gists{/gist_id}","starred_url":"https://api.github.com/users/gandrewstone/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gandrewstone/subscriptions","organizations_url":"https://api.github.com/users/gandrewstone/orgs","repos_url":"https://api.github.com/users/gandrewstone/repos","events_url":"https://api.github.com/users/gandrewstone/events{/privacy}","received_events_url":"https://api.github.com/users/gandrewstone/received_events","type":"User","site_admin":false},"created_at":"2016-09-22T21:22:39Z","updated_at":"2016-09-22T21:22:39Z","body":"yes, run with \"ulimit -c unlimited\" to generate a core dump that would help us a lot.  The log is indicating that the core dump occurred in the c++ standard library -- so probably a STL misuse issue but its impossible to determine anything else from the log message."}}
{"actor":{"display_login":"gandrewstone"}}