On Wed, Aug 09, 2023 at 03:45:03PM +0800, GONG, Ruiqi wrote: > From: "GONG, Ruiqi" <gongruiqi1@xxxxxxxxxx> > > When compiling with gcc 13 and CONFIG_FORTIFY_SOURCE=y, the following > warning appears: > > In function ‘fortify_memcpy_chk’, > inlined from ‘size_entry_mwt’ at net/bridge/netfilter/ebtables.c:2118:2: > ./include/linux/fortify-string.h:592:25: error: call to ‘__read_overflow2_field’ > declared with attribute warning: detected read beyond size of field (2nd parameter); > maybe use struct_group()? [-Werror=attribute-warning] > 592 | __read_overflow2_field(q_size_field, size); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > The compiler is complaining: > > memcpy(&offsets[1], &entry->watchers_offset, > sizeof(offsets) - sizeof(offsets[0])); > > where memcpy reads beyong &entry->watchers_offset to copy nit: beyong -> beyond ...
