odr-violation warning for modemmanger

Yunlian Jiang yunlian at chromium.org
Wed Aug 6 15:36:21 PDT 2014


Hi,
   When I compile modemmanger with truck clang with address sanitizer, I got
the following warnings in the test case. Can any one take a look at it to
see whether
this warning is valid?
   Thanks

    * ==26533==ERROR: AddressSanitizer: odr-violation (0x7f8d113eb020):
 *   [1] size=4 'mm_plugin_major_version' samsung/mm-plugin-samsung.c:34:5
 *   [2] size=4 'mm_plugin_major_version' iridium/mm-plugin-iridium.c:36:5
 * These globals were registered at these points:
 *   [1]:
 *     #0 0x45983b in __asan_register_globals
(/build/amd64-generic/tmp/portage/net-misc/modemmanager-next-9999/work/modemmanager-next-9999/src/.libs/lt-ModemManager+0x45983b)
 *     #1 0x7f8d0f5e69d6 in asan.module_ctor
(/build/amd64-generic/tmp/portage/net-misc/modemmanager-next-9999/work/modemmanager-next-9999/plugins/.libs/libmm-plugin-samsung.so+0xb9d6)
 *     #2 0x7f8d138bbed1 (/lib64/ld-linux-x86-64.so.2+0xeed1)
 *     #3 0x7f8d138bbfab (/lib64/ld-linux-x86-64.so.2+0xefab)
 *     #4 0x7f8d138c06fd (/lib64/ld-linux-x86-64.so.2+0x136fd)
 *     #5 0x7f8d138bbd43 (/lib64/ld-linux-x86-64.so.2+0xed43)
 *     #6 0x7f8d138bfb95 (/lib64/ld-linux-x86-64.so.2+0x12b95)
 *     #7 0x7f8d12a3903a in dlopen_doit
/var/tmp/portage/cross-x86_64-cros-linux-gnu/glibc-2.15-r13/work/glibc-2.15/dlfcn/dlopen.c:67
 *     #8 0x7f8d138bbd43 (/lib64/ld-linux-x86-64.so.2+0xed43)
 *     #9 0x7f8d12a395ec in _dlerror_run
/var/tmp/portage/cross-x86_64-cros-linux-gnu/glibc-2.15-r13/work/glibc-2.15/dlfcn/dlerror.c:164
 *     #10 0x7f8d12a390d0 in dlopen
/var/tmp/portage/cross-x86_64-cros-linux-gnu/glibc-2.15-r13/work/glibc-2.15/dlfcn/dlopen.c:88
 *     #11 0x490382 in __interceptor_dlopen
(/build/amd64-generic/tmp/portage/net-misc/modemmanager-next-9999/work/modemmanager-next-9999/src/.libs/lt-ModemManager+0x490382)
 *     #12 0x7f8d13aa8961 in _g_module_open
/build/amd64-generic/tmp/portage/dev-libs/glib-2.34.3-r2/work/glib-2.34.3/gmodule/gmodule-dl.c:99
 *     #13 0x7f8d13aa8961 in g_module_open
/build/amd64-generic/tmp/portage/dev-libs/glib-2.34.3-r2/work/glib-2.34.3/gmodule/gmodule.c:584
 *
 *   [2]:
 *     #0 0x45983b in __asan_register_globals
(/build/amd64-generic/tmp/portage/net-misc/modemmanager-next-9999/work/modemmanager-next-9999/src/.libs/lt-ModemManager+0x45983b)
 *     #1 0x7f8d111e5c96 in asan.module_ctor
(/build/amd64-generic/tmp/portage/net-misc/modemmanager-next-9999/work/modemmanager-next-9999/plugins/.libs/libmm-plugin-iridium.so+0x4c96)
 *     #2 0x7f8d138bbed1 (/lib64/ld-linux-x86-64.so.2+0xeed1)
 *     #3 0x7f8d138bbfab (/lib64/ld-linux-x86-64.so.2+0xefab)
 *     #4 0x7f8d138c06fd (/lib64/ld-linux-x86-64.so.2+0x136fd)
 *     #5 0x7f8d138bbd43 (/lib64/ld-linux-x86-64.so.2+0xed43)
 *     #6 0x7f8d138bfb95 (/lib64/ld-linux-x86-64.so.2+0x12b95)
 *     #7 0x7f8d12a3903a in dlopen_doit
/var/tmp/portage/cross-x86_64-cros-linux-gnu/glibc-2.15-r13/work/glibc-2.15/dlfcn/dlopen.c:67
 *     #8 0x7f8d138bbd43 (/lib64/ld-linux-x86-64.so.2+0xed43)
 *     #9 0x7f8d12a395ec in _dlerror_run
/var/tmp/portage/cross-x86_64-cros-linux-gnu/glibc-2.15-r13/work/glibc-2.15/dlfcn/dlerror.c:164
 *     #10 0x7f8d12a390d0 in dlopen
/var/tmp/portage/cross-x86_64-cros-linux-gnu/glibc-2.15-r13/work/glibc-2.15/dlfcn/dlopen.c:88
 *     #11 0x490382 in __interceptor_dlopen
(/build/amd64-generic/tmp/portage/net-misc/modemmanager-next-9999/work/modemmanager-next-9999/src/.libs/lt-ModemManager+0x490382)
 *     #12 0x7f8d13aa8961 in _g_module_open
/build/amd64-generic/tmp/portage/dev-libs/glib-2.34.3-r2/work/glib-2.34.3/gmodule/gmodule-dl.c:99
 *     #13 0x7f8d13aa8961 in g_module_open
/build/amd64-generic/tmp/portage/dev-libs/glib-2.34.3-r2/work/glib-2.34.3/gmodule/gmodule.c:584
 *
 * ==26533==HINT: if you don't care about these warnings you may set
ASAN_OPTIONS=detect_odr_violation=0
 * SUMMARY: AddressSanitizer: odr-violation: global
'mm_plugin_major_version' at samsung/mm-plugin-samsung.c:34:5
 * ==26533==ABORTING



    Thanks
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