[dpdk-dev] [Bug 28] event/octeontx: snprintf() overflow

[bugzilla at dpdk.org]

https://dpdk.org/tracker/show_bug.cgi?id=28

            Bug ID: 28
           Summary: event/octeontx: snprintf() overflow
           Product: DPDK
           Version: unspecified
          Hardware: All
                OS: All
            Status: CONFIRMED
          Severity: normal
          Priority: Normal
         Component: eventdev
          Assignee: dev at dpdk.org
          Reporter: harry.van.haaren at intel.com
                CC: pbhagavatula at caviumnetworks.com
  Target Milestone: ---

Compiling latest git with Meson and GCC 5.4, it prints a warning for always
overflowing a destination buffer.

[1/15] Compiling C object
'drivers/tmp_rte_..._event at sta/event_octeontx_timvf_evdev.c.o'
In file included from /usr/include/stdio.h:936:0,
                 from ../lib/librte_eal/common/include/rte_log.h:21,
                 from ../lib/librte_eal/common/include/rte_debug.h:17,
                 from ../lib/librte_eal/common/include/generic/rte_cycles.h:16,
                 from
../lib/librte_eal/common/include/arch/x86/rte_cycles.h:13,
                 from ../drivers/event/octeontx/timvf_evdev.h:10,
                 from ../drivers/event/octeontx/timvf_evdev.c:6:
In function ‘snprintf’,
    inlined from ‘timvf_ring_create’ at
../drivers/event/octeontx/timvf_evdev.c:298:2:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: warning: call to
__builtin___snprintf_chk will always overflow destination buffer
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,


/* Declaration of pool_name */
char pool_name[25];
...
/* offending line, note the mismatch in size 25 and 30 */
snprintf(pool_name, 30, "timvf_chunk_pool%d", timr->tim_ring_id);

Commited in f874c1eb1519185feba05a0542413492e5f56ae9

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