On Fri, Jan 22, 2016 at 02:40:35PM -0600, Chris J Arges wrote: > On Fri, Jan 22, 2016 at 01:14:47PM -0600, Josh Poimboeuf wrote: > > On Fri, Jan 22, 2016 at 11:43:48AM -0600, Chris J Arges wrote: > > > On Thu, Jan 21, 2016 at 04:49:04PM -0600, Josh Poimboeuf wrote: > > > > This is v16 of the compile-time stack metadata validation patch set, > > > > along with proposed fixes for most of the warnings it found. It's based > > > > on the tip/master branch. > > > > > > > Josh, > > > > > > Looks good, with my config [1] I do still get a few warnings building > > > linux/linux-next. > > > > > > Here are the warnings: > > > $ grep ^stacktool build.log | grep -v staging > > > > Thanks for reporting these! > > > > > stacktool: arch/x86/kvm/vmx.o: vmx_handle_external_intr()+0x67: call > > > without frame pointer save/setup > > > > This can be fixed by setting the stack pointer as an output operand for > > the inline asm call in vmx_handle_external_intr(). > > > > Feel free to submit a patch, or I'll get around to it eventually. > > > > > stacktool: fs/reiserfs/namei.o: set_de_name_and_namelen()+0x9e: return > > > without frame pointer restore > > > stacktool: fs/reiserfs/namei.o: set_de_name_and_namelen()+0x89: duplicate > > > frame pointer save > > > stacktool: fs/reiserfs/namei.o: set_de_name_and_namelen()+0x8a: duplicate > > > frame pointer setup > > > stacktool: fs/reiserfs/namei.o: set_de_name_and_namelen()+0x9e: frame > > > pointer state mismatch > > > stacktool: fs/reiserfs/namei.o: set_de_name_and_namelen()+0x0: frame > > > pointer state mismatch > > > > These are false positives. Stacktool is confused by the use of a > > "noreturn" function which it doesn't know about (__reiserfs_panic). > > > > Unfortunately the only solution I currently have for dealing with global > > noreturn functions is to just hard-code a list of them. So the short > > term fix would be to add "__reiserfs_panic" to the global_noreturns list > > in tools/stacktool/builtin-check.c. > > > > I'm still trying to figure out a better way to deal with this type of > > issue, as it's a pain to have to keep a hard-coded list of noreturn > > functions. Unfortunately that info isn't available in the ELF. > > > > Josh, > Ok I'll hack on the patches above. > > > > stacktool: fs/reiserfs/ibalance.o: .text: unexpected end of section > > > stacktool: fs/reiserfs/tail_conversion.o: .text: unexpected end of section > > > > For some reason I'm not able to recreate these warnings... Can you > > share one of the .o files? > > Binaries are here: > http://people.canonical.com/~arges/stacktool/
Thanks, looks like the same __reiserfs_panic() noreturn fix for those. -- Josh
