On Fri, Apr 24, 2020 at 03:22:14PM -0700, Matt Helsley wrote: > On Fri, Apr 24, 2020 at 12:30:46PM -0700, Sami Tolvanen wrote: > > When compiling a kernel with Clang and LTO, we need to run > > recordmcount on vmlinux.o with a large number of sections, which > > currently fails as the program doesn't understand extended > > section indexes. This change adds support for processing binaries > > with >64k sections. > > > > Signed-off-by: Sami Tolvanen <samitolvanen@xxxxxxxxxx> > > Feel free to add > > Reviewed-by: Matt Helsley <mhelsley@xxxxxxxxxx> Hi! Can this patch please be applied and sent before -rc2? FGKASLR, LTO, and link time improvements[1] all depend on this fix, and I'd really like them all to be able to sanely rebase for the development window. Thanks! -Kees [1] https://lore.kernel.org/lkml/CAK7LNARbZhoaA=Nnuw0=gBrkuKbr_4Ng_Ei57uafujZf7Xazgw@xxxxxxxxxxxxxx/ > > > --- > > Changes in v2: > > - Switched to unsigned int for (old|new)_shnum in append_func. > > - Added set_shnum and find_symtab helper functions and moved > > the new logic there. > > > > --- > > scripts/recordmcount.h | 98 +++++++++++++++++++++++++++++++++++++++--- > > 1 file changed, 92 insertions(+), 6 deletions(-) > > <snip> -- Kees Cook
