{"action":"created","issue":{"url":"https://api.github.com/repos/Level/leveldown/issues/227","labels_url":"https://api.github.com/repos/Level/leveldown/issues/227/labels{/name}","comments_url":"https://api.github.com/repos/Level/leveldown/issues/227/comments","events_url":"https://api.github.com/repos/Level/leveldown/issues/227/events","html_url":"https://github.com/Level/leveldown/issues/227","id":110260313,"number":227,"title":"segault in leveldown 1.4.1, node 4.1.2","user":{"login":"palamccc","id":202276,"avatar_url":"https://avatars.githubusercontent.com/u/202276?v=3","gravatar_id":"","url":"https://api.github.com/users/palamccc","html_url":"https://github.com/palamccc","followers_url":"https://api.github.com/users/palamccc/followers","following_url":"https://api.github.com/users/palamccc/following{/other_user}","gists_url":"https://api.github.com/users/palamccc/gists{/gist_id}","starred_url":"https://api.github.com/users/palamccc/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/palamccc/subscriptions","organizations_url":"https://api.github.com/users/palamccc/orgs","repos_url":"https://api.github.com/users/palamccc/repos","events_url":"https://api.github.com/users/palamccc/events{/privacy}","received_events_url":"https://api.github.com/users/palamccc/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2015-10-07T16:07:41Z","updated_at":"2015-10-09T15:30:07Z","closed_at":null,"body":"I'm getting segfault in leveldown, but i don't know which action is triggering it, can you help reading the segfault trace (leveldown 1.4.1, node 4.1.2)\r\n\r\n    PID 1 received SIGSEGV for address: 0x0\r\n    /usr/src/app/node_modules/segfault-handler/build/Release/segfault-handler.node(+0x17f3)[0x7f049274c7f3]\r\n    /lib/x86_64-linux-gnu/libpthread.so.0(+0xf8d0)[0x7f0494d0a8d0]\r\n    /usr/src/app/node_modules/leveldown/build/Release/leveldown.node(_ZN7leveldb3log6Writer18EmitPhysicalRecordENS0_10RecordTypeEPKcm+0x91)[0x7f047bdc0601]\r\n    /usr/src/app/node_modules/leveldown/build/Release/leveldown.node(_ZN7leveldb3log6Writer9AddRecordERKNS_5SliceE+0xf4)[0x7f047bdc08a4]\r\n    /usr/src/app/node_modules/leveldown/build/Release/leveldown.node(_ZN7leveldb6DBImpl5WriteERKNS_12WriteOptionsEPNS_10WriteBatchE+0x1b4)[0x7f047bdb2034]\r\n    /usr/src/app/node_modules/leveldown/build/Release/leveldown.node(_ZN7leveldb2DB3PutERKNS_12WriteOptionsERKNS_5SliceES6_+0x61)[0x7f047bdb2661]\r\n    /usr/src/app/node_modules/leveldown/build/Release/leveldown.node(_ZN7leveldb6DBImpl3PutERKNS_12WriteOptionsERKNS_5SliceES6_+0x11)[0x7f047bdb26a1]\r\n    /usr/src/app/node_modules/leveldown/build/Release/leveldown.node(_ZN9leveldown8Database13PutToDatabaseEPN7leveldb12WriteOptionsENS1_5SliceES4_+0x26)[0x7f047bda4de6]\r\n    /usr/src/app/node_modules/leveldown/build/Release/leveldown.node(_ZN9leveldown11WriteWorker7ExecuteEv+0x53)[0x7f047bda6d33]\r\n    /usr/src/app/node_modules/leveldown/build/Release/leveldown.node(_ZN3Nan12AsyncExecuteEP9uv_work_s+0x52)[0x7f047bd9ed42]\r\n    node[0xf91671]\r\n    node[0xf9f919]\r\n    /lib/x86_64-linux-gnu/libpthread.so.0(+0x80a4)[0x7f0494d030a4]\r\n    /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7f0494a3804d]\r\n"},"comment":{"url":"https://api.github.com/repos/Level/leveldown/issues/comments/146904083","html_url":"https://github.com/Level/leveldown/issues/227#issuecomment-146904083","issue_url":"https://api.github.com/repos/Level/leveldown/issues/227","id":146904083,"user":{"login":"No9","id":130940,"avatar_url":"https://avatars.githubusercontent.com/u/130940?v=3","gravatar_id":"","url":"https://api.github.com/users/No9","html_url":"https://github.com/No9","followers_url":"https://api.github.com/users/No9/followers","following_url":"https://api.github.com/users/No9/following{/other_user}","gists_url":"https://api.github.com/users/No9/gists{/gist_id}","starred_url":"https://api.github.com/users/No9/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/No9/subscriptions","organizations_url":"https://api.github.com/users/No9/orgs","repos_url":"https://api.github.com/users/No9/repos","events_url":"https://api.github.com/users/No9/events{/privacy}","received_events_url":"https://api.github.com/users/No9/received_events","type":"User","site_admin":false},"created_at":"2015-10-09T15:30:07Z","updated_at":"2015-10-09T15:30:07Z","body":"@palamccc this is interesting \r\nA gist would be appreciated as this seems to be failing on a normal `put` - `_ZN7leveldb2DB3PutERKNS_12WriteOptionsERKNS_5SliceES6_+0x61)[0x7f047bdb2661`"}}