Hi, The following patches are the result of limitation found on the CFA management code when trying to validate arm64 frames. I tried to keep things simple and not contradict current CFA management logic nor introduce too many corner cases.
Changes since V2[1]: - Simplify cfa offset checking for BP and return address [1] https://lkml.org/lkml/2020/9/28/354 Thanks, Julien Julien Thierry (3): objtool: check: Fully validate the stack frame objtool: check: Support addition to set CFA base objtool: check: Make SP memory operation match PUSH/POP semantics tools/objtool/check.c | 46 +++++++++++++++++++++++++++++++++++++++---- 1 file changed, 42 insertions(+), 4 deletions(-) -- 2.25.4
