1706317 - Intermittent mozcrash.py | application crashed [@ js::jit::MAssertRecoveredOnBailout::writeRecoverData(js::jit::CompactBufferWriter&) const]

Status: NEW

(Core :: JavaScript Engine: JIT, defect, P5)

Description

Filed by: archaeopteryx [at] coole-files.de
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=337001204&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/OiZ8_vA9ROafV6oocpO5AQ/runs/0/artifacts/public/logs/live_backing.log

---

Since bug 1697929 landed, several Linux spidermonkey test tasks are successful but contain crashes either about [@ js::jit::MAssertRecoveredOnBailout::writeRecoverData(js::jit::CompactBufferWriter&) const] or [@ Crash(JSContext*, unsigned int, JS::Value*)]

[task 2021-04-19T14:56:15.894Z] TEST-PASS | streams/readable-streams/templated.any.js | (args: "--dll /builds/worker/fetches/injector/libbreakpadinjector.so --ion-eager --ion-offthread-compile=off --more-compartments") [0.1 s]
[task 2021-04-19T14:56:16.048Z] make[1]: Leaving directory '/builds/worker/workspace/sm-package/mozjs-89.0a1.0/obj-spider/js/src'
[task 2021-04-19T14:56:16.048Z] in directory /builds/worker/workspace/sm-package/mozjs-89.0a1.0/obj-spider, running ['/builds/worker/workspace/sm-package/mozjs-89.0a1.0/obj-spider/_virtualenvs/init_py3/bin/python3', '/builds/worker/workspace/sm-package/mozjs-89.0a1.0/testing/mozbase/mozcrash/mozcrash/mozcrash.py', '/tmp', '/builds/worker/workspace/sm-package/mozjs-89.0a1.0/obj-spider/dist/crashreporter-symbols']
[task 2021-04-19T14:56:16.128Z] mozcrash INFO | Copy/paste: /builds/worker/fetches/minidump_stackwalk/minidump_stackwalk /tmp/539f1e1e-0cc8-0712-8da8-8464c60d3835.dmp /builds/worker/workspace/sm-package/mozjs-89.0a1.0/obj-spider/dist/crashreporter-symbols
[task 2021-04-19T14:56:17.029Z] mozcrash INFO | Saved minidump as /builds/worker/workspace/sm-package/mozjs-89.0a1.0/obj-spider/539f1e1e-0cc8-0712-8da8-8464c60d3835.dmp
[task 2021-04-19T14:56:17.029Z] mozcrash checking /tmp for minidumps...
[task 2021-04-19T14:56:17.029Z] PROCESS-CRASH | mozcrash.py | application crashed [@ js::jit::MAssertRecoveredOnBailout::writeRecoverData(js::jit::CompactBufferWriter&) const]
[task 2021-04-19T14:56:17.029Z] Crash dump filename: /tmp/539f1e1e-0cc8-0712-8da8-8464c60d3835.dmp
[task 2021-04-19T14:56:17.029Z] Operating system: Linux
[task 2021-04-19T14:56:17.029Z]                   0.0.0 Linux 4.4.0-1014-aws #14taskcluster1-Ubuntu SMP Tue Apr 3 10:27:00 UTC 2018 x86_64
[task 2021-04-19T14:56:17.029Z] CPU: amd64
[task 2021-04-19T14:56:17.029Z]      family 6 model 85 stepping 4
[task 2021-04-19T14:56:17.029Z]      16 CPUs
[task 2021-04-19T14:56:17.029Z] 
[task 2021-04-19T14:56:17.029Z] GPU: UNKNOWN
[task 2021-04-19T14:56:17.029Z] 
[task 2021-04-19T14:56:17.029Z] Crash reason:  SIGSEGV /SEGV_MAPERR
[task 2021-04-19T14:56:17.029Z] Crash address: 0x0
[task 2021-04-19T14:56:17.029Z] Process uptime: not available
[task 2021-04-19T14:56:17.029Z] 
[task 2021-04-19T14:56:17.029Z] Thread 0 (crashed)
[task 2021-04-19T14:56:17.029Z]  0  js!js::jit::MAssertRecoveredOnBailout::writeRecoverData(js::jit::CompactBufferWriter&) const [Recover.cpp : 1837 + 0x11]
[task 2021-04-19T14:56:17.029Z]     rax = 0x00005555576804e0   rdx = 0x0000000000000008
[task 2021-04-19T14:56:17.029Z]     rcx = 0x00005555565f69f8   rbx = 0x00007ffff6c52a68
[task 2021-04-19T14:56:17.029Z]     rsi = 0x00007ffff6c52a68   rdi = 0x00007ffff5adef38
[task 2021-04-19T14:56:17.029Z]     rbp = 0x00007fffffffc130   rsp = 0x00007fffffffc118
[task 2021-04-19T14:56:17.029Z]      r8 = 0x00007ffff5aee000    r9 = 0x0000000000000001
[task 2021-04-19T14:56:17.029Z]     r10 = 0x00006df50bf1f1cb   r11 = 0x0000000000000040
[task 2021-04-19T14:56:17.029Z]     r12 = 0x00007ffff5ae0de0   r13 = 0x00007ffff5ae0d88
[task 2021-04-19T14:56:17.029Z]     r14 = 0x00007ffff6c52000   r15 = 0x00007ffff5ae0dd8
[task 2021-04-19T14:56:17.030Z]     rip = 0x0000555555f8b141
[task 2021-04-19T14:56:17.030Z]     Found by: given as instruction pointer in context
[task 2021-04-19T14:56:17.030Z]  1  js!js::jit::RecoverWriter::writeInstruction(js::jit::MNode const*) [Snapshots.cpp : 643 + 0x9]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff5ae0d88   rbp = 0x00007fffffffc130
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffc120   r12 = 0x00007ffff5ae0de0
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007ffff5ae0d88   r14 = 0x00007ffff6c52000
[task 2021-04-19T14:56:17.030Z]     r15 = 0x00007ffff5ae0dd8   rip = 0x0000555555dada38
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z]  2  js!js::jit::CodeGeneratorShared::encode(js::jit::LRecoverInfo*) [clone .part.242] [CodeGenerator-shared.cpp : 533 + 0xf]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff6c52a68   rbp = 0x00007fffffffc180
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffc140   r12 = 0x00007ffff5ae0de0
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007ffff5ae0d88   r14 = 0x00007ffff6c52000
[task 2021-04-19T14:56:17.030Z]     r15 = 0x00007ffff5ae0dd8   rip = 0x0000555555dd012f
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z]  3  js!js::jit::CodeGeneratorShared::encode(js::jit::LSnapshot*) [clone .part.243] [CodeGenerator-shared.cpp : 547 + 0x8]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff6c52000   rbp = 0x00007fffffffc220
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffc190   r12 = 0x00007ffff5ae0de0
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007ffff5ae0d88   r14 = 0x00002b576db9c3d0
[task 2021-04-19T14:56:17.030Z]     r15 = 0x00007ffff6c52000   rip = 0x0000555555dd1088
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z]  4  js!js::jit::CodeGenerator::generateBody() [CodeGenerator.cpp : 6571 + 0x34ea]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00005555565f08e0   rbp = 0x00007fffffffc2f0
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffc230   r12 = 0x00007ffff5ae0d48
[task 2021-04-19T14:56:17.030Z]     r13 = 0x0000000000000000   r14 = 0x00002b576db9c3d0
[task 2021-04-19T14:56:17.030Z]     r15 = 0x00007ffff6c52000   rip = 0x0000555555ed65fb
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z]  5  js!js::jit::CodeGenerator::generate() [CodeGenerator.cpp : 11450 + 0x8]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff6c52000   rbp = 0x00007fffffffc330
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffc300   r12 = 0x00007ffff5a65d81
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007ffff5ae4640   r14 = 0x00007ffff5ade0a8
[task 2021-04-19T14:56:17.030Z]     r15 = 0x0000000000000000   rip = 0x0000555555ed71f4
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z]  6  js!js::jit::GenerateCode(js::jit::MIRGenerator*, js::jit::LIRGraph*) [Ion.cpp : 1567 + 0x8]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff6c52000   rbp = 0x00007fffffffc390
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffc340   r12 = 0x00007fffffffc340
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007ffff5ade128   r14 = 0x00007ffff5ae0530
[task 2021-04-19T14:56:17.030Z]     r15 = 0x0000000000000000   rip = 0x0000555555ee64bf
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z]  7  js!js::jit::CompileBackEnd(js::jit::MIRGenerator*, js::jit::WarpSnapshot*) [Ion.cpp : 1596 + 0xb]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff6c26000   rbp = 0x00007fffffffc710
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffc3a0   r12 = 0x00007fffffffc980
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007fffffffc4c0   r14 = 0x00007ffff5ade128
[task 2021-04-19T14:56:17.030Z]     r15 = 0x0000000000000000   rip = 0x0000555555efc805
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z]  8  js!js::jit::IonCompile(JSContext*, JS::Handle<JSScript*>, unsigned char*) [Ion.cpp : 1723 + 0xf]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff6c26000   rbp = 0x00007fffffffc8e0
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffc720   r12 = 0x00007fffffffc980
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007ffff5ade348   r14 = 0x00007fffffffc7f0
[task 2021-04-19T14:56:17.030Z]     r15 = 0x00007ffff5a765e0   rip = 0x0000555555efd80e
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z]  9  js!js::jit::Compile(JSContext*, JS::Handle<JSScript*>, js::jit::BaselineFrame*, unsigned char*) [Ion.cpp : 1908 + 0xe]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00002b576db9c3d0   rbp = 0x00007fffffffc950
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffc8f0   r12 = 0x00007ffff6c26000
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007fffffffc980   r14 = 0x0000000000000000
[task 2021-04-19T14:56:17.030Z]     r15 = 0x0000000000000001   rip = 0x0000555555efda23
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z] 10  js!IonCompileScriptForBaseline(JSContext*, js::jit::BaselineFrame*, unsigned char*) [Ion.cpp : 2164 + 0x64]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff6c26000   rbp = 0x00007fffffffc9c0
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffc960   r12 = 0x00007fffffffca10
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007ffff5a65d81   r14 = 0x00007fffffffc980
[task 2021-04-19T14:56:17.030Z]     r15 = 0x0000000000000001   rip = 0x0000555555effbfe
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z] 11  0x1723ffadbcea
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00001723ffb1c610   rbp = 0x00007fffffffca58
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffc9d0   r12 = 0x0000000000000000
[task 2021-04-19T14:56:17.030Z]     r13 = 0x0000000000000000   r14 = 0x0000000000000043
[task 2021-04-19T14:56:17.030Z]     r15 = 0x00007fffffffcbe0   rip = 0x00001723ffadbcea
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z] 12  0x1723ffb18973
[task 2021-04-19T14:56:17.030Z]     rbp = 0x00007fffffffca88   rsp = 0x00007fffffffca68
[task 2021-04-19T14:56:17.030Z]     rip = 0x00001723ffb18973
[task 2021-04-19T14:56:17.030Z]     Found by: previous frame's frame pointer
[task 2021-04-19T14:56:17.030Z] 13  0x7ffff6c4d6d0
[task 2021-04-19T14:56:17.030Z]     rbp = 0x00007fffffffcb08   rsp = 0x00007fffffffca98
[task 2021-04-19T14:56:17.030Z]     rip = 0x00007ffff6c4d6d0
[task 2021-04-19T14:56:17.030Z]     Found by: previous frame's frame pointer
[task 2021-04-19T14:56:17.030Z] 14  0x1723ffad856f
[task 2021-04-19T14:56:17.030Z]     rbp = 0x00007fffffffcb60   rsp = 0x00007fffffffcb18
[task 2021-04-19T14:56:17.030Z]     rip = 0x00001723ffad856f
[task 2021-04-19T14:56:17.030Z]     Found by: previous frame's frame pointer
[task 2021-04-19T14:56:17.030Z] 15  js!EnterJit(JSContext*, js::RunState&, unsigned char*) [Jit.cpp : 109 + 0x8]
[task 2021-04-19T14:56:17.030Z]     rbp = 0x00007fffffffcd20   rsp = 0x00007fffffffcb70
[task 2021-04-19T14:56:17.030Z]     rip = 0x0000555555f04ba6
[task 2021-04-19T14:56:17.030Z]     Found by: previous frame's frame pointer
[task 2021-04-19T14:56:17.030Z] 16  js!js::RunScript(JSContext*, js::RunState&) [Interpreter.cpp : 396 + 0x5]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff6c26000   rbp = 0x00007fffffffcd90
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffcd30   r12 = 0x00007fffffffcda0
[task 2021-04-19T14:56:17.030Z]     r13 = 0x0000000000000001   r14 = 0x0000000000000000
[task 2021-04-19T14:56:17.030Z]     r15 = 0x000000d614f28217   rip = 0x00005555557ef732
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z] 17  js!js::Execute(JSContext*, JS::Handle<JSScript*>, JS::Handle<JSObject*>, JS::MutableHandle<JS::Value>) [Interpreter.cpp : 809 + 0xa7]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff6c26000   rbp = 0x00007fffffffce20
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffcda0   r12 = 0x00007fffffffced0
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007fffffffce40   r14 = 0x00007fffffffce60
[task 2021-04-19T14:56:17.030Z]     r15 = 0x00007fffffffdf26   rip = 0x00005555557f20b3
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z] 18  js!JS_ExecuteScript(JSContext*, JS::Handle<JSScript*>) [CompilationAndEvaluation.cpp : 466 + 0x5]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff6c26000   rbp = 0x00007fffffffce80
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffce30   r12 = 0x00007fffffffced0
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007ffff7621400   r14 = 0x00007fffffffcf00
[task 2021-04-19T14:56:17.030Z]     r15 = 0x00007fffffffdf26   rip = 0x00005555558d2185
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z] 19  js!RunFile(JSContext*, char const*, _IO_FILE*, CompileUtf8, bool) [js.cpp : 1062 + 0x13]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff6c26000   rbp = 0x00007fffffffd020
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffce90   r12 = 0x0000000000000001
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007ffff7621400   r14 = 0x00007fffffffcf00
[task 2021-04-19T14:56:17.030Z]     r15 = 0x00007fffffffdf26   rip = 0x00005555557032ac
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z] 20  js!Process(JSContext*, char const*, bool, FileKind) [js.cpp : 1659 + 0x18]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff6c26000   rbp = 0x00007fffffffd0a0
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffd030   r12 = 0x00007ffff7a0b800
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007fffffffdf26   r14 = 0x0000000000000000
[task 2021-04-19T14:56:17.030Z]     r15 = 0x0000000000000000   rip = 0x0000555555704be9
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z] 21  js!main [js.cpp : 12526 + 0x126c]
[task 2021-04-19T14:56:17.030Z]     rbx = 0x00007ffff6c21400   rbp = 0x00007fffffffd710
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffd0b0   r12 = 0x00007ffff7a0b840
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007ffff6c26000   r14 = 0x0000000000000010
[task 2021-04-19T14:56:17.030Z]     r15 = 0x0000000000000010   rip = 0x000055555570d910
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z] 22  libc.so.6 + 0x2409b
[task 2021-04-19T14:56:17.030Z]     rbx = 0x0000000000000000   rbp = 0x0000555556586240
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffd720   r12 = 0x000055555572321f
[task 2021-04-19T14:56:17.030Z]     r13 = 0x00007fffffffd7f0   r14 = 0x0000000000000000
[task 2021-04-19T14:56:17.030Z]     r15 = 0x0000000000000000   rip = 0x00007ffff787309b
[task 2021-04-19T14:56:17.030Z]     Found by: call frame info
[task 2021-04-19T14:56:17.030Z] 23  js + 0x1b63e0
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffd740   rip = 0x000055555570a3e0
[task 2021-04-19T14:56:17.030Z]     Found by: stack scanning
[task 2021-04-19T14:56:17.030Z] 24  js!_GLOBAL__sub_I_Unified_cpp_js_src_wasm3.cpp [WasmValidate.cpp : 3566 + 0xaf]
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffd758   rip = 0x000055555572321f
[task 2021-04-19T14:56:17.030Z]     Found by: stack scanning
[task 2021-04-19T14:56:17.030Z] 25  ld-linux-x86-64.so.2 + 0xf476
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffd7b0   rip = 0x00007ffff7fe4476
[task 2021-04-19T14:56:17.030Z]     Found by: stack scanning
[task 2021-04-19T14:56:17.030Z] 26  js!_GLOBAL__sub_I_Unified_cpp_js_src_wasm3.cpp [WasmValidate.cpp : 3566 + 0xaf]
[task 2021-04-19T14:56:17.030Z]     rsp = 0x00007fffffffd7c8   rip = 0x000055555572321f
[task 2021-04-19T14:56:17.030Z]     Found by: stack scanning
[task 2021-04-19T14:56:17.031Z] 27  js!_start + 0x29
[task 2021-04-19T14:56:17.031Z]     rsp = 0x00007fffffffd7e0   rip = 0x0000555555723248
[task 2021-04-19T14:56:17.031Z]     Found by: stack scanning```

Comment 1

[Steven DeTar [:sdetar]]

Steve, could you look at this bug since it might be related to your bug fix for bug 1697929

Comment 2

[Steve Fink [:sfink] [:s:]]

Thanks for filing. I have seen similar things happen on numerous occasions with the old setup as well. Last time I tried to dig into it, they stopped happening when I changed some seemingly unrelated stuff. I guess it must just be intermittent?

Anyway, I don't think the issue is new. It's still serious.

Comment 3

[Intermittent Failures Robot]

1 failures in 3224 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1

Platform and build breakdown:

• linux64: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1706317&startday=2021-04-19&endday=2021-04-25&tree=all

Comment 4

[Intermittent Failures Robot]

2 failures in 3061 pushes (0.001 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 2

Platform and build breakdown:

• linux64: 2
  • debug: 2

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1706317&startday=2021-05-17&endday=2021-05-23&tree=all

Comment 5

[Intermittent Failures Robot]

2 failures in 2888 pushes (0.001 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 2

Platform and build breakdown:

• linux64: 2
  • opt: 1
  • debug: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1706317&startday=2021-06-14&endday=2021-06-20&tree=all

Comment 6

[Intermittent Failures Robot]

12 failures in 3115 pushes (0.004 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 12

Platform and build breakdown:

• linux64: 12
  • debug: 9
  • opt: 3

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1706317&startday=2021-06-21&endday=2021-06-27&tree=all

Comment 7

[Intermittent Failures Robot]

8 failures in 723 pushes (0.011 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 4
• autoland: 4

Platform and build breakdown:

• linux64: 8
  • debug: 7
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1706317&startday=2021-06-28&endday=2021-07-04&tree=all

Comment 8

[Steve Fink [:sfink] [:s:]]

I'm going to say the priority of this bug is a lot higher. We have quite a few crash reports that are somehow not resulting in the test being green, and they look real.

Two things needed:

• the exit status should not be zero for these crashes. Something is going very wrong.
• the pid—or better, the command line—should be reported.

I believe I now know how to hack the latter in for Linux. I still don't know what to do about the former.

Comment 9

[Nicolas B. Pierron [:nbp]]

This assertion usually checks our ability to optimize the code such that we are able to remove it from IonMonkey execution path.

These failures are not worrying, as something would have some attack surface that definitely have to be fixed, but they highlight that our expectation in terms of optimizations are not met. In the past, previous failures yielded to adding more skipping conditions, or having a better controlled environment for running these test cases.

Comment 10

[Steve Fink [:sfink] [:s:]]

(In reply to Nicolas B. Pierron [:nbp] from comment #9)

This assertion usually checks our ability to optimize the code such that we are able to remove it from IonMonkey execution path.

These failures are not worrying, as something would have some attack surface that definitely have to be fixed, but they highlight that our expectation in terms of optimizations are not met. In the past, previous failures yielded to adding more skipping conditions, or having a better controlled environment for running these test cases.

Sorry, I should fork off another bug. I agree with you that the specific assertion is not a priority. The real problem is that there is a range of assertions that show up on green builds, somehow not causing the test to fail.

Bug 1718819 was originally filed for this, and I kind of co-opted it for a fix to the mechanism I use to prevent expected crashes from producing a minidump. I have filed bug 1757798 and deprioritized this bug.