Hi,
Kernel test bot reported that the ia64 build error on stable 4.19.y because of the commit d3380de483d5 ("ia64: kprobes: Use generic kretprobe trampoline handler"). I also found that this commit was involved by the backporting of commit f5f96e3643dc ("ia64: kprobes: Fix to pass correct trampoline address to the handler"), and this 2nd commit was backported wrong way. Actually, this 2nd commit aimed to use dereference_function_descriptor() in kprobes@ia64, but the comment (and Fixes tag) points the 1st commit. Thus I guess this mistake happened.
So I re-backport the upstream commit a7fe2378454c ("ia64: kprobes: Fix to pass correct trampoline address to the handler") correctly, without involving the 1st commit.
Thank you,
---
Masami Hiramatsu (3): Revert "ia64: kprobes: Fix to pass correct trampoline address to the handler" Revert "ia64: kprobes: Use generic kretprobe trampoline handler" ia64: kprobes: Fix to pass correct trampoline address to the handler
arch/ia64/kernel/kprobes.c | 78 ++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 75 insertions(+), 3 deletions(-)
-- Masami Hiramatsu (Linaro) mhiramat@kernel.org