[tor-bugs] #12419 [Tor bundles/installation]: TBBs wirh ASan create alloc_dealloc_mismatch warnings

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#12419: TBBs wirh ASan create alloc_dealloc_mismatch warnings
--------------------------------------+-----------------------
 Reporter:  gk                        |          Owner:  erinn
     Type:  defect                    |         Status:  new
 Priority:  normal                    |      Milestone:
Component:  Tor bundles/installation  |        Version:
 Keywords:  tbb-security              |  Actual Points:
Parent ID:  #10599                    |         Points:
--------------------------------------+-----------------------
 TBBs with ASan based on ESR 24 still create fatal alloc_dealloc_mismatch
 warnings although it seems not so often/fast if compiling the bundle with
 GCC 4.9.0:
 {{{
 =================================================================
 ==2659==ERROR: AddressSanitizer: alloc-dealloc-mismatch (malloc vs
 operator delete) on 0x60800014a620
     #0 0x7eff150cd207 in operator delete(void*)
 (/home/firefox64/asan/ubsan/tor-browser_en-
 US/Browser/TorBrowser/Tor/libasan.so.1+0x58207)
     #1 0x7efefd4f5103 (/home/firefox64/asan/ubsan/tor-browser_en-
 US/Browser/libxul.so+0x102e6103)
     #2 0x7efefd41515e (/home/firefox64/asan/ubsan/tor-browser_en-
 US/Browser/libxul.so+0x1020615e)
     #3 0x7efef95a36d0 (/home/firefox64/asan/ubsan/tor-browser_en-
 US/Browser/libxul.so+0xc3946d0)
     #4 0x7efefc83582c (/home/firefox64/asan/ubsan/tor-browser_en-
 US/Browser/libxul.so+0xf62682c)
     #5 0x7efefc76c8dc (/home/firefox64/asan/ubsan/tor-browser_en-
 US/Browser/libxul.so+0xf55d8dc)
     #6 0x7efefc8386b1 (/home/firefox64/asan/ubsan/tor-browser_en-
 US/Browser/libxul.so+0xf6296b1)
     #7 0x7eff10ba7f58 (/home/firefox64/asan/ubsan/tor-browser_en-
 US/Browser/libnspr4.so+0x144f58)
     #8 0x7eff14e5fe99 in start_thread (/lib/x86_64-linux-
 gnu/libpthread.so.0+0x7e99)
     #9 0x7eff137ae3fc in __clone (/lib/x86_64-linux-gnu/libc.so.6+0xf43fc)

 0x60800014a620 is located 0 bytes inside of 96-byte region
 [0x60800014a620,0x60800014a680)
 allocated by thread T50 (Image Scaler) here:
     #0 0x7eff150cc4cf in malloc (/home/firefox64/asan/ubsan/tor-
 browser_en-US/Browser/TorBrowser/Tor/libasan.so.1+0x574cf)
     #1 0x7eff0e54cc60 in moz_xmalloc (/home/firefox64/asan/ubsan/tor-
 browser_en-US/Browser/libmozalloc.so+0x1c60)

 Thread T50 (Image Scaler) created by T0 here:
     #0 0x7eff1509b69a in __interceptor_pthread_create
 (/home/firefox64/asan/ubsan/tor-browser_en-
 US/Browser/TorBrowser/Tor/libasan.so.1+0x2669a)
     #1 0x7eff10ba70ad (/home/firefox64/asan/ubsan/tor-browser_en-
 US/Browser/libnspr4.so+0x1440ad)
     #2 0x7eff10bc20bf (/home/firefox64/asan/ubsan/tor-browser_en-
 US/Browser/libnspr4.so+0x15f0bf)

 SUMMARY: AddressSanitizer: alloc-dealloc-mismatch ??:0 operator
 delete(void*)
 ==2659==HINT: if you don't care about these warnings you may set
 ASAN_OPTIONS=alloc_dealloc_mismatch=0
 ==2659==ABORTING
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12419>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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