Re: [PATCH bpf-next 1/2] arm64/ftrace,bpf: Fix partial regs after bpf_prog_run
From: Steven Rostedt <rostedt@goodmis.org>
Date: 2026-01-07 17:14:10
Also in:
bpf, linux-trace-kernel
On Wed, 7 Jan 2026 16:52:52 +0000 Will Deacon [off-list ref] wrote:
quoted hunk ↗ jump to hunk
diff --git a/include/linux/ftrace_regs.h b/include/linux/ftrace_regs.h index 15627ceea9bc..3ebd8cdac7c6 100644 --- a/include/linux/ftrace_regs.h +++ b/include/linux/ftrace_regs.h@@ -33,6 +33,15 @@ struct ftrace_regs; #define ftrace_regs_get_frame_pointer(fregs) \ frame_pointer(&arch_ftrace_regs(fregs)->regs) +#else + +static __always_inline void +ftrace_partial_regs_update(const struct ftrace_regs *fregs, struct pt_regs *regs) +{ + ftrace_regs_set_instruction_pointer(fregs, instruction_pointer(regs)); + ftrace_regs_set_return_value(fregs, regs_return_value(regs)); +} + #endif /* HAVE_ARCH_FTRACE_REGS */ /* This can be overridden by the architectures */
Hmm, maybe that would work. Of course you forgot to add the helper for the !HAVE_ARCH_FTRACE_REGS case ;-) -- Steve