On Thu, Aug 08, 2019 at 10:45:34PM +0200, Arnd Bergmann wrote: > On Thu, Aug 8, 2019 at 9:06 PM kbuild test robot <l...@intel.com> wrote: > > > > tree: > > https://kernel.googlesource.com/pub/scm/linux/kernel/git/arnd/playground.git > > randconfig-5.3-rc2 > > head: bfe9aede7372c8310a9bf31963460c9dd11d1f82 > > commit: 97919a3ec80e9841c4bbac14a80e8b9d482666d4 [32/347] [SUBMITTED > > 20190718] reiserfs: fix code unwinding with clang > > config: x86_64-lkp (attached as .config) > > compiler: gcc-7 (Debian 7.4.0-10) 7.4.0 > > reproduce: > > git checkout 97919a3ec80e9841c4bbac14a80e8b9d482666d4 > > # save the attached .config to linux build tree > > make ARCH=x86_64 > > > > If you fix the issue, kindly add following tag > > Reported-by: kbuild test robot <l...@intel.com> > > > > All warnings (new ones prefixed by >>): > > > > >> fs/reiserfs/namei.o: warning: objtool: entry_points_to_object()+0x117: > > >> unreachable instruction > > -- > > >> fs/reiserfs/do_balan.o: warning: objtool: get_FEB()+0x55: unreachable > > >> instruction > > >> fs/reiserfs/prints.o: warning: objtool: __reiserfs_error()+0x80: > > >> unreachable instruction > > >> fs/reiserfs/lbalance.o: warning: objtool: leaf_move_items()+0x210: > > >> unreachable instruction > > >> fs/reiserfs/fix_node.o: warning: objtool: create_virtual_node()+0x295: > > >> unreachable instruction > > >> fs/reiserfs/inode.o: warning: objtool: reiserfs_update_sd_size()+0x26b: > > >> unreachable instruction > > >> fs/reiserfs/ibalance.o: warning: objtool: balance_internal()+0x30d: > > >> unreachable instruction > > >> fs/reiserfs/stree.o: warning: objtool: reiserfs_cut_from_item()+0x239: > > >> unreachable instruction > > >> fs/reiserfs/tail_conversion.o: warning: objtool: > > >> direct2indirect()+0x29c: unreachable instruction > > >> fs/reiserfs/item_ops.o: warning: objtool: direntry_check_left()+0x5d: > > >> unreachable instruction > > >> fs/reiserfs/journal.o: warning: objtool: flush_commit_list()+0x552: > > >> unreachable instruction > > Great fun. The patch I did was my workaround for a related problem with clang, > see below. > > Josh, is this warning above something you are interested in? I don't > think it happens in mainline, but it could happen anywhere. I think > the patch below can be dropped once clang is fixed, but I have so far > been unable to build a new compiler for testing.
>From a brief glance I think you need to remove __reiserfs_panic from objtool's global_noreturns[] array. -- Josh
