196399 2019-03-29 08:40:34 -0700 [WPE][JSC] Jetstream2 crash on ARMv7 2020-04-29 07:24:23 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified NEW P2 Normal --- 197797 1 pnormand ticaiolima alex bugs-noreply clopez ticaiolima tonikitoo oldest_to_newest 1522456 0 pnormand 2019-03-29 08:40:34 -0700 The not so useful backtrace I have so far: Thread 1 "WPEWebProcess" received signal SIGSEGV, Segmentation fault. 0x7092acf8 in ?? () (gdb) bt #0 0x7092acf8 in ?? () #1 0x7674f9c0 in operationStrCat3 () from target:/usr/lib/libWPEWebKit-1.0.so.3 #2 0x00000018 in ?? () Backtrace stopped: previous frame identical to this frame (corrupt stack?) 1522457 1 pnormand 2019-03-29 08:42:15 -0700 The crashing benchmark seems to be WSJ. Disabling the DFG JIT works around the issue but renders the whole thing unusable because too slow. 1531244 2 ticaiolima 2019-04-29 13:01:16 -0700 I'm investigating it. 1531249 3 ticaiolima 2019-04-29 13:05:00 -0700 It looks like a bug on tail calls corrupting stack on some cases. I'm trying to get a simple case to reproduce the bug, but I was able to run "WSL" on JSC command line setting "--useTailCall=false". 1640812 4 alex 2020-04-13 02:26:34 -0700 Any update in this problem, we are checking in the rpi3 and the test crashes very early. 1646959 5 ticaiolima 2020-04-29 04:59:58 -0700 WSL issue should be fixed after https://trac.webkit.org/changeset/258143 landed. I'm able to run it into JetStream 2 CLI. However, due to memory constraints, I'm unable to run the entire JetStream2 without OOM in my rpi device. 1646977 6 alex 2020-04-29 07:24:23 -0700 Just checked, the WSL crash is fixed for me in the rpi device too.