Value of [u]int16 type is incremented/decremented via objdb/confdb call
API can return invalid value, because uninitialized memory is read
Read only 16-bits of value instead of 32
Correct value is returned and uninitialized memory is not read.
Created attachment 652644 [details]
Description of problem:
When object_key_increment or _decrement is called on [u]int16 value,
uninitialized value is read as result value.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Store [u]int16 value in confdb
2. Call object_key_increment on this key
3. valgrind will tell about access to uninitialized memory. From time to time, returned value (last parameter of object_key_increment) can be unexpected value.
Read of uninitialized value
No read of uninitialized value
Verified using confdb-incdec.sh:
FAIL on corosync-1.4.1-15.el6.x86_64 (RHEL6.4) (/root/csts-apps/confdb-incdec.c:68: incdec: Assertion `res == i16inc' failed)
PASS on corosync-1.4.1-17.el6.x86_64 (RHEL6.5)
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.