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. > 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? -- Josh -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
