[tor-bugs] #32052 [Applications/Tor Browser]: Linux32 bundles for Tor Browser 9.0a8 are not reproducible

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Oct 17 06:51:50 UTC 2019


#32052: Linux32 bundles for Tor Browser 9.0a8 are not reproducible
------------------------------------------------+--------------------------
 Reporter:  gk                                  |          Owner:  tbb-team
     Type:  defect                              |         Status:  new
 Priority:  Immediate                           |      Milestone:
Component:  Applications/Tor Browser            |        Version:
 Severity:  Critical                            |     Resolution:
 Keywords:  TorBrowserTeam201910, tbb-9.0-must  |  Actual Points:
Parent ID:                                      |         Points:
 Reviewer:                                      |        Sponsor:
------------------------------------------------+--------------------------
Changes (by gk):

 * cc: manishearth@…, acrichton@… (added)


Comment:

 Here is what we know so far: while the `libxul.so` usually matches between
 different builds if one tries hard enough (building over and over again)
 one gets different libraries. Looking at the diff shows that `gkrust-
 f4d3d8c9a1eaf037.gkrust.eac5ce9j-cgu.0.rcgu.o` is different from non-
 matching builds.

 Looking closer at that one gets us something like
 {{{
 --- /dev/fd/63  2019-10-17 08:43:29.203950618 +0200
 +++ /dev/fd/62  2019-10-17 08:43:29.207950653 +0200
 @@ -1,6 +1,6 @@
  00000000: 7f45 4c46 0101 0100 0000 0000 0000 0000  .ELF............
  00000010: 0100 0300 0100 0000 0000 0000 0000 0000  ................
 -00000020: d08e d100 0000 0000 3400 0000 0000 2800  ........4.....(.
 +00000020: 908e d100 0000 0000 3400 0000 0000 2800  ........4.....(.
  00000030: 4c7b 0100 0000 0000 0000 0000 0000 0000  L{..............
  00000040: 5553 5756 83ec 0c8b 4424 20e8 0000 0000  USWV....D$ .....
  00000050: 5b81 c303 0000 008b 7024 85f6 745d 8b4c  [.......p$..t].L
 @@ -2879,26 +2879,26 @@
  0000b3e0: 6c6c 2d61 7272 6f77 2d66 6f72 7761 7264  ll-arrow-forward
  0000b3f0: 646f 772d 6275 7474 6f6e 2d63 6c6f 7365  dow-button-close
  0000b400: 2d6d 6f7a 2d77 696e 646f 772d 6275 7474  -moz-window-butt
 -0000b410: 6c65 7468 756d 622d 7665 7274 6963 616c  lethumb-vertical
 -0000b420: 7363 616c 6574 6875 6d62 2d76 6572 7469  scalethumb-verti
 -0000b430: 7466 6965 6c64 2d6d 756c 7469 6c69 6e65  tfield-multiline
 -0000b440: 7465 7874 6669 656c 642d 6d75 6c74 696c  textfield-multil
 -0000b450: 7262 7574 746f 6e2d 6472 6f70 646f 776e  rbutton-dropdown
 -0000b460: 746f 6f6c 6261 7262 7574 746f 6e2d 6472  toolbarbutton-dr
 -0000b470: 6568 6561 6465 7273 6f72 7461 7272 6f77  eheadersortarrow
 -0000b480: 7472 6565 6865 6164 6572 736f 7274 6172  treeheadersortar
 -0000b490: 6963 6174 696f 6e73 2d74 6f6f 6c62 6f78  ications-toolbox
 -0000b4a0: 2d6d 6f7a 2d77 696e 2d63 6f6d 6d75 6e69  -moz-win-communi
 -0000b4b0: 6572 7461 6262 6172 2d74 6f6f 6c62 6f78  ertabbar-toolbox
 -0000b4c0: 2d6d 6f7a 2d77 696e 2d62 726f 7773 6572  -moz-win-browser
 -0000b4d0: 756c 6c73 6372 6565 6e2d 6275 7474 6f6e  ullscreen-button
 -0000b4e0: 2d6d 6f7a 2d6d 6163 2d66 756c 6c73 6372  -moz-mac-fullscr
 -0000b4f0: 6f6e 2d62 6f78 2d6d 6178 696d 697a 6564  on-box-maximized
 -0000b500: 2d62 7574 746f 6e2d 6d61 7869 6d69 7a65  -button-maximize
 -0000b510: 2d62 7574 746f 6e2d 6d69 6e69 6d69 7a65  -button-minimize
 -0000b520: 772d 6275 7474 6f6e 2d72 6573 746f 7265  w-button-restore
 -0000b530: 646f 772d 6672 616d 652d 626f 7474 6f6d  dow-frame-bottom
 -0000b540: 2d6d 6f7a 2d77 696e 646f 772d 6672 616d  -moz-window-fram
 +0000b410: 646f 772d 6672 616d 652d 626f 7474 6f6d  dow-frame-bottom
 +0000b420: 2d6d 6f7a 2d77 696e 646f 772d 6672 616d  -moz-window-fram
 +0000b430: 6c65 7468 756d 622d 7665 7274 6963 616c  lethumb-vertical
 +0000b440: 7363 616c 6574 6875 6d62 2d76 6572 7469  scalethumb-verti
 +0000b450: 7466 6965 6c64 2d6d 756c 7469 6c69 6e65  tfield-multiline
 +0000b460: 7465 7874 6669 656c 642d 6d75 6c74 696c  textfield-multil
 +0000b470: 7262 7574 746f 6e2d 6472 6f70 646f 776e  rbutton-dropdown
 +0000b480: 746f 6f6c 6261 7262 7574 746f 6e2d 6472  toolbarbutton-dr
 +0000b490: 6568 6561 6465 7273 6f72 7461 7272 6f77  eheadersortarrow
 +0000b4a0: 7472 6565 6865 6164 6572 736f 7274 6172  treeheadersortar
 +0000b4b0: 6963 6174 696f 6e73 2d74 6f6f 6c62 6f78  ications-toolbox
 +0000b4c0: 2d6d 6f7a 2d77 696e 2d63 6f6d 6d75 6e69  -moz-win-communi
 +0000b4d0: 6572 7461 6262 6172 2d74 6f6f 6c62 6f78  ertabbar-toolbox
 +0000b4e0: 2d6d 6f7a 2d77 696e 2d62 726f 7773 6572  -moz-win-browser
 +0000b4f0: 756c 6c73 6372 6565 6e2d 6275 7474 6f6e  ullscreen-button
 +0000b500: 2d6d 6f7a 2d6d 6163 2d66 756c 6c73 6372  -moz-mac-fullscr
 +0000b510: 2d62 7574 746f 6e2d 6d61 7869 6d69 7a65  -button-maximize
 +0000b520: 2d62 7574 746f 6e2d 6d69 6e69 6d69 7a65  -button-minimize
 +0000b530: 6f6e 2d62 6f78 2d6d 6178 696d 697a 6564  on-box-maximized
 +0000b540: 772d 6275 7474 6f6e 2d72 6573 746f 7265  w-button-restore
  0000b550: 746c 6562 6172 2d6d 6178 696d 697a 6564  tlebar-maximized
  0000b560: 2d6d 6f7a 2d77 696e 646f 772d 7469 746c  -moz-window-titl
  0000b570: 7375 7265 2d62 7574 746f 6e2d 6f70 656e  sure-button-open
 @@ -414252,45983 +414252,45983 @@
  006522b0: 4e2c 897e 30c6 0601 83c4 7c5e 5f5b 5dc3  N,.~0.....|^_[].
  006522c0: 0fb6 c8e8 fcff ffff 8b17 e997 fdff ff0f  ................
  006522d0: 0b0f 0b00 0000 0000 0000 0000 0000 0000  ................
 -006522e0: 5553 5756 81ec ac00 0000 8bbc 24c0 0000  USWV........$...
 -006522f0: 0089 5424 0ce8 0000 0000 5b89 ce81 c305  ..T$......[.....
 -00652300: 0000 008b 178b 6a08 8b42 1045 8944 2438  ......j..B.E.D$8
 -00652310: 8a47 042b 6a0c c647 0403 3c03 0f85 7c01  .G.+j..G..<...|.
 }}}
 followed by dozens of MiB of differences.

 {{{
 -0000b530: 646f 772d 6672 616d 652d 626f 7474 6f6d  dow-frame-bottom
 -0000b540: 2d6d 6f7a 2d77 696e 646f 772d 6672 616d  -moz-window-fram
 +0000b410: 646f 772d 6672 616d 652d 626f 7474 6f6d  dow-frame-bottom
 +0000b420: 2d6d 6f7a 2d77 696e 646f 772d 6672 616d  -moz-window-fram
 }}}
 might be interesting as those to lines are the only difference in that
 particular block: in the first build they are at the end while they are at
 the beginning of the second one.

 Either way: Alex/Manish: is there anything know on Rust's side that could
 be causing that? That's with ESR 68 and the self-compiled Rust 1.34.2. Any
 ideas what we could try to get a smaller testcase/scenario to reproduce
 the bug would be highly appreciated as well. :)

 Back then in #26475 we had been fighting Rust related reproducibility
 issues but I double-checked that this bug is something different.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32052#comment:5>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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