On Fri, Aug 11, 2017 at 12:24:15PM -0500, Josh Poimboeuf wrote: > When GCC adds NOP padding between functions, those NOPs aren't > associated with a function symbol, which breaks objtool's detection of a > function falling through to another function. Instead it shows > confusing errors like: > > drivers/mtd/chips/cfi_util.o: warning: objtool: cfi_qry_mode_on()+0x8b: > return with modified stack frame > drivers/mtd/chips/cfi_util.o: warning: objtool: cfi_qry_mode_on()+0x0: > stack state mismatch: cfa1=-4-32 cfa2=7+8 > drivers/mtd/chips/cfi_cmdset_0002.o: warning: objtool: > fixup_use_fwh_lock()+0x8: unknown stack-related register move > drivers/mtd/chips/cfi_cmdset_0002.o: warning: objtool: > fixup_use_fwh_lock()+0x0: stack state mismatch: cfa1=6+16 cfa2=7+8 > drivers/mtd/chips/cfi_cmdset_0002.o: warning: objtool: do_otp_write()+0xa: > unsupported stack pointer realignment > drivers/mtd/chips/cfi_cmdset_0002.o: warning: objtool: do_otp_write()+0x0: > stack state mismatch: cfa1=-4-40 cfa2=7+8 > > Reported-by: kbuild test robot <fengguang...@intel.com> > Signed-off-by: Josh Poimboeuf <jpoim...@redhat.com>
Ping? -- Josh
