I'd like to suppress the error strncpy-param-overlap thrown fom some shared
library. Even though I've addedd shared.so to suppression file, asan still
reports it:
==5006==ERROR: AddressSanitizer: strncpy-param-overlap: memory ranges
[0x60b00000af90,0x60b00000aff4) and [0x60b00000af90, 0x60b00000aff4) overlap
#0 0x46e398 (/home/pjachowi/tmp/main+0x46e398)
#1 0x7f3188af0a9b (shared.so+0xa9b)
#2 0x4ed259 (/home/pjachowi/tmp/main+0x4ed259)
#3 0x7f318787c82f (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#4 0x418db8 (/home/pjachowi/tmp/main+0x418db8)
0x60b00000af90 is located 0 bytes inside of 100-byte region
[0x60b00000af90,0x60b00000aff4)
allocated by thread T0 here:
#0 0x4b8ee8 (/home/pjachowi/tmp/main+0x4b8ee8)
#1 0x7f3188af0a83 (shared.so+0xa83)
#2 0x4ed259 (/home/pjachowi/tmp/main+0x4ed259)
#3 0x7f318787c82f (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
0x60b00000af90 is located 0 bytes inside of 100-byte region
[0x60b00000af90,0x60b00000aff4)
allocated by thread T0 here:
#0 0x4b8ee8 (/home/pjachowi/tmp/main+0x4b8ee8)
#1 0x7f3188af0a83 (shared.so+0xa83)
#2 0x4ed259 (/home/pjachowi/tmp/main+0x4ed259)
#3 0x7f318787c82f (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
SUMMARY: AddressSanitizer: strncpy-param-overlap
(/home/pjachowi/tmp/main+0x46e398)
f()=42
==5007==Attached to thread 5006.
==5007==Detached from thread 5006.
-----------------------------------------------------
Suppressions used:
count bytes template
2 104 shared.so
-----------------------------------------------------
I
use
ASAN_OPTIONS=verbosity=3:suppressions=$(pwd)/asan.supp:print_suppressions=true:debug=true:halt_on_error=false
$ cat ./asan.supp
interceptor_via_lib:shared.so
--
Piotr
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