Changes in rethook.c

0ef6f5c0 - x86,rethook: Fix arch_rethook_trampoline() to generate a complete pt_regs

Sat, 26 Mar 2022 02:27:28 +0000

x86,rethook: Fix arch_rethook_trampoline() to generate a complete pt_regsCurrently arch_rethook_trampoline() generates an almost completept_regs on-stack, everything except regs->ss that is, that currentlypoints to the fake return address, which is not a valid segmentdescriptor.Since interpretation of regs->[sb]p should be done in the context ofregs->ss, and we have code actually doing that (seearch/x86/lib/insn-eval.c for instance), complete the job by alsopushing ss.This ensures that anybody who does do look at regs->ss doesn'tmysteriously malfunction, avoiding much future pain.Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Alexei Starovoitov Reviewed-by: Masami Hiramatsu Link: https://lore.kernel.org/bpf/164826164851.2455864.17272661073069737350.stgit@devnote2 List of files: /linux-6.15/arch/x86/kernel/rethook.c

f3a112c0 - x86,rethook,kprobes: Replace kretprobe with rethook on x86

Sat, 26 Mar 2022 02:27:17 +0000

x86,rethook,kprobes: Replace kretprobe with rethook on x86Replaces the kretprobe code with rethook on x86. With this patch,kretprobe on x86 uses the rethook instead of kretprobe specifictrampoline code.Signed-off-by: Masami Hiramatsu Signed-off-by: Alexei Starovoitov Tested-by: Jiri Olsa Link: https://lore.kernel.org/bpf/164826163692.2455864.13745421016848209527.stgit@devnote2 List of files: /linux-6.15/arch/x86/kernel/rethook.c

75caf33e - rethook: x86: Add rethook x86 implementation

Tue, 15 Mar 2022 14:01:02 +0000

rethook: x86: Add rethook x86 implementationAdd rethook for x86 implementation. Most of the code has been copied fromkretprobes on x86.Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (Google) Tested-by: Steven Rostedt (Google) Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/164735286243.1084943.7477055110527046644.stgit@devnote2 List of files: /linux-6.15/arch/x86/kernel/rethook.c