Segfault on running sample roundtrip with ASAN

[ya1gaurav]

Compile:
g++ -fno-omit-frame-pointer -fsanitize=address -g3 roundtrip.c -o roundtrip -I../../include/ -L../../src/.libs/ -llcms2
Run:
./roundtrip ../../testbed/test1.icc

ASAN:SIGSEGV

==10718== ERROR: AddressSanitizer: SEGV on unknown address 0x000000000008 (pc 0x7f634eeb302c sp 0x7fff570ac170 bp 0x7fff570ac210 T0)
AddressSanitizer can not provide additional info.
==10718== WARNING: Trying to symbolize code, but external symbolizer is not initialized!
#0 0x7f634eeb302b (/home4/Little-CMS-master/src/.libs/liblcms2.so.2+0x7002b)
src/cmsxform.c:189
#1 0x400f95 (/home4/Little-CMS-master/utils/samples/roundtrip+0x400f95)
utils/samples/roundtrip.c:67
#2 0x7f634e799ec4 (/lib/x86_64-linux-gnu/libc.so.6+0x21ec4)
#3 0x400a48 (/home4/Little-CMS-master/utils/samples/roundtrip+0x400a48)
==10718== ABORTING

Analysis:
It fails with test1.icc,test2.icc & bad.icc. Pass with test3.icc, test4.icc & test5.icc
It faults in dereference:
189 p -> xform(p, InputBuffer, OutputBuffer, Size, 1, &stride);

[mm2]

Fixed, thanks for pointing it out.

Regards

Marti Maria

The LittleCMS project

http://www.littlecms.com

From: Gaurav [mailto:notifications@github.com]
Sent: miércoles, 25 de noviembre de 2015 3:22
To: mm2/Little-CMS Little-CMS@noreply.github.com
Subject: [Little-CMS] Segfault on running sample roundtrip with ASAN (#65)

Compile:
g++ -fno-omit-frame-pointer -fsanitize=address -g3 roundtrip.c -o roundtrip -I../../include/ -L../../src/.libs/ -llcms2
Run:
./roundtrip ../../testbed/test1.icc

ASAN:SIGSEGV

==10718== ERROR: AddressSanitizer: SEGV on unknown address 0x000000000008 (pc 0x7f634eeb302c sp 0x7fff570ac170 bp 0x7fff570ac210 T0)
AddressSanitizer can not provide additional info.
==10718== WARNING: Trying to symbolize code, but external symbolizer is not initialized!
#0 0x7f634eeb302b (/home4/Little-CMS-master/src/.libs/liblcms2.so.2+0x7002b)
src/cmsxform.c:189
#1 #1 0x400f95 (/home4/Little-CMS-master/utils/samples/roundtrip+0x400f95)
utils/samples/roundtrip.c:67
#2 #2 0x7f634e799ec4 (/lib/x86_64-linux-gnu/libc.so.6+0x21ec4)
#3 #3 0x400a48 (/home4/Little-CMS-master/utils/samples/roundtrip+0x400a48)
==10718== ABORTING

Analysis:
It fails with test1.icc,test2.icc & bad.icc. Pass with test3.icc, test4.icc & test5.icc
It faults in dereference:
189 p -> xform(p, InputBuffer, OutputBuffer, Size, 1, &stride);

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[ya1gaurav]

Also, I noticed other samples are written with old code base, they need to be modified for correct working.