Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `./firefox --class Tor Browser -profile TorBrowser/Data/Browser/profile.default'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007f16d28cb79b in raise (sig=11) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:37
37 ../nptl/sysdeps/unix/sysv/linux/pt-raise.c: No such file or directory.
(gdb) backtrace
#0 0x00007f16d28cb79b in raise (sig=11) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:37
#1 0x00007f16cedb3ae2 in nsProfileLock::FatalSignalHandler (signo=11, info=0x7ffd50f88670,
context=0x7ffd50f88540)
at /home/ubuntu/build/tor-browser/profile/dirserviceprovider/nsProfileLock.cpp:180
#2 (closed)#3 (closed) nsACString_internal::Equals (this=0x20, aStr=...)
at /home/ubuntu/build/tor-browser/xpcom/string/nsTSubstring.cpp:702
#4 (closed) 0x00007f16ce0fd291 in operator== (aRhs=..., aLhs=...)
at ../../dist/include/nsTSubstring.h:1159
#5 (closed) nsHostObjectProtocolHandler::RemoveDataEntry (aUri=..., aIsolationKey=...)
at /home/ubuntu/build/tor-browser/dom/base/nsHostObjectProtocolHandler.cpp:354
#6 (closed) 0x00007f16ce0ecb7a in nsDocument::~nsDocument (this=0x7f16aa11b000,
__in_chrg=) at /home/ubuntu/build/tor-browser/dom/base/nsDocument.cpp:1785
#7 (closed) 0x00007f16ce6cfb65 in nsHTMLDocument::~nsHTMLDocument (this=0x7f16aa11b000,
__in_chrg=)
at /home/ubuntu/build/tor-browser/dom/html/nsHTMLDocument.cpp:201
#8 (closed) 0x00007f16cda81527 in SnowWhiteKiller::~SnowWhiteKiller (this=0x7ffd50f88c08,
__in_chrg=)
at /home/ubuntu/build/tor-browser/xpcom/base/nsCycleCollector.cpp:2664
#9 (closed) 0x00007f16cda7c1a1 in nsCycleCollector::FreeSnowWhite (this=0x7f16c52e4000,
aUntilNoSWInPurpleBuffer=aUntilNoSWInPurpleBuffer@entry=false)
at /home/ubuntu/build/tor-browser/xpcom/base/nsCycleCollector.cpp:2825
#10 (closed) 0x00007f16cda7c425 in nsCycleCollector_doDeferredDeletion ()
at /home/ubuntu/build/tor-browser/xpcom/base/nsCycleCollector.cpp:4210
#11 (closed) 0x00007f16cde2b6d7 in AsyncFreeSnowWhite::Run (this=0x7f16bd182aa0)
at /home/ubuntu/build/tor-browser/js/xpconnect/src/XPCJSRuntime.cpp:227
#5 nsHostObjectProtocolHandler::RemoveDataEntry (aUri=..., aIsolationKey=...) at /home/ubuntu/build/tor-browser/dom/base/nsHostObjectProtocolHandler.cpp:354#6 0x00007f16ce0ecb7a in nsDocument::~nsDocument (this=0x7f16aa11b000, in_chrg=<optimized out>) at /home/ubuntu/build/tor-browser/dom/base/nsDocument.cpp:1785