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90688b148c
Reuse the buffer for getline and track buffer allocation separately from the string length to prevent unlikely out-of-bounds memory access. This fixes the following leak that happened when zero bytes were read: ==404== 120 bytes in 1 blocks are definitely lost in loss record 1,344 of 1,671 ==404== at 0x4C2C71B: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==404== by 0x906F862: getdelim (iogetdelim.c:68) ==404== by 0x52A48FB: virCgroupPartitionNeedsEscaping (vircgroup.c:1136) ==404== by 0x52A0FB4: virCgroupPartitionEscape (vircgroup.c:1171) ==404== by 0x52A0EA4: virCgroupNewDomainPartition (vircgroup.c:1450) (cherry picked from commit cc7329317fee6088055d7b09594c19f1b8fec5e3)
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>