bugThe FreeType Project - Bugs: bug #47514, timeout in pfr_lookup_bitmap_data

 
 

bug #47514: timeout in pfr_lookup_bitmap_data

Submitted by:  Kostya Serebryany <kcc>
Submitted on:  Thu 24 Mar 2016 01:08:11 AM UTC  
 
Severity: 3 - NormalItem Group: None
Status: FixedPrivacy: Public
Assigned to: Werner LEMBERG <wl>Open/Closed: Closed
Planned Release: 2.6.4

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Tue 29 Mar 2016 04:59:51 PM UTC, comment #5:

Confirmed, no more easy-to-find timeouts.

Kostya Serebryany <kcc>
Project Member
Tue 29 Mar 2016 07:15:57 AM UTC, comment #4:

Should be really fixed this time :-)

Werner LEMBERG <wl>
Project AdministratorIn charge of this item.
Mon 28 Mar 2016 05:41:35 PM UTC, comment #3:

Looks like at least one similar timeout remains, attaching more repros.

(file #36785)

Kostya Serebryany <kcc>
Project Member
Sat 26 Mar 2016 09:43:12 PM UTC, comment #2:

Now fixed in git. Thanks for the report!

Werner LEMBERG <wl>
Project AdministratorIn charge of this item.
Thu 24 Mar 2016 01:20:59 AM UTC, comment #1:

Smaller repro.

(file #36740)

Kostya Serebryany <kcc>
Project Member
Thu 24 Mar 2016 01:08:11 AM UTC, original submission:

Applying libFuzzer (src/tools/ftfuzzer/ftfuzzer.cc)
to fonts from https://github.com/twardoch/test-fonts/
finds the following timeout, repro attached:

#5 0x66fe5d in pfr_lookup_bitmap_data src/pfr/pfrsbit.c:298:18
#6 0x66fe5d in pfr_slot_load_bitmap src/pfr/pfrsbit.c:583
#7 0x66fe5d in pfr_slot_load src/pfr/pfrobjs.c:345
#8 0x522f59 in FT_Load_Glyph src/base/ftobjs.c:713:17
#9 0x4e5e37 in LLVMFuzzerTestOneInput

Kostya Serebryany <kcc>
Project Member

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach File(s):
   
   
Comment:
   

Attached Files
file #36785:  more-timeouts.tgz added by kcc (4KiB - application/x-compressed-tar)
file #36740:  timeout-4df1d37650dcf2c15675a49576125bc4df4b7c20 added by kcc (956B - application/octet-stream)
file #36739:  timeout-b254b09332dd0c88f165b873e6e14f8f42afe84b added by kcc (257KiB - application/octet-stream)

 

Depends on the following items: None found

Items that depend on this one: None found

 

Carbon-Copy List
  • -unavailable- added by wl (Posted a comment)
  • -unavailable- added by kcc (Submitted the item)
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    Follow 9 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Tue 29 Mar 2016 07:15:57 AM UTCwlStatusNone=>Fixed
    Mon 28 Mar 2016 05:41:35 PM UTCkccAttached File-=>Added more-timeouts.tgz, #36785
      StatusFixed=>None
    Sat 26 Mar 2016 09:43:12 PM UTCwlStatusNone=>Fixed
      Assigned toNone=>wl
      Open/ClosedOpen=>Closed
      Planned ReleaseNone=>2.6.4
    Thu 24 Mar 2016 01:20:59 AM UTCkccAttached File-=>Added timeout-4df1d37650dcf2c15675a49576125bc4df4b7c20, #36740
    Thu 24 Mar 2016 01:08:11 AM UTCkccAttached File-=>Added timeout-b254b09332dd0c88f165b873e6e14f8f42afe84b, #36739

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