Dear Maintainer, I found this upstream bug report [1]. The SIGILL causing instruction seems to consist just of four zeros. [2]
The instruction before is [3]. Version 68.4.2esr-1 in unstable does not show this crash. Kind regards, Bernhard [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1609535 [2] (gdb) disassemble /r 0x0000ffff7da711f0-60,0x0000ffff7da711f0+60 ... 0x0000ffff7da711ec: 1f 20 03 d5 nop => 0x0000ffff7da711f0 <e843419@07fb_00070e4f_34c+0>: 00 00 00 00 .inst 0x00000000 ; undefined 0x0000ffff7da711f4 <e843419@07fb_00070e4f_34c+4>: 85 ff ff 17 b 0xffff7da71008 <nsCommandLine::EnumerateHandlers(nsresult (*)(nsICommandLineHandler*, nsICommandLine*, void*), void*)+848> 0x0000ffff7da711f8: 00 00 00 00 .inst 0x00000000 ; undefined ... [3] 1: x/i $pc => 0xfffff2ab9004: b 0xfffff2ab91f0 (gdb) stepi 0x0000fffff2ab91f0 in ?? () from /usr/lib/firefox-esr/libxul.so 1: x/i $pc => 0xfffff2ab91f0: .inst 0x00000000 ; undefined #0 0x0000fffff2ab9004 in nsCommandLine::EnumerateHandlers (this=this@entry=0xffffe75edaf0, aCallback=aCallback@entry=0xfffff2ab77d0 <EnumRun(nsICommandLineHandler*, nsICommandLine*, void*)>, aClosure=aClosure@entry=0x0) at ./build-browser/dist/include/nsCOMPtr.h:331 https://sources.debian.org/src/firefox-esr/68.4.2esr-1/xpcom/base/nsCOMPtr.h/#L331 https://sources.debian.org/src/firefox-esr/68.4.2esr-1/xpcom/base/nsCOMPtr.h/#L91
