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Subject[RFC PATCH v2 0/4] uprobes: return probe implementation
There are RFC uretprobes implementation. I'd be grateful for review.


I've intentionally removed the retprobe bypass logic, it requires
a bit more work.

not fixed since last prior RFC review:
unify xol_get_trampoline_slot() and xol_take_insn_slot()
protect uprobe in prepare_uretprobe()

v2 changes:
introduced rp_handler(), get rid of return_consumers
get rid of uretprobe_[un]register()
introduced arch_uretprobe_get_sp()
removed uprobe_task->doomed, kill task immediately
fix arch_uretprobe_hijack_return_addr()'s returns
address the v1 minor issues


Anton Arapov (5):
uretprobes/x86: hijack return address
uretprobes: trampoline implementation
uretprobes: return probe entry, prepare uretprobe
uretprobes: invoke return probe handlers

arch/x86/include/asm/uprobes.h | 6 ++
arch/x86/kernel/uprobes.c | 48 +++++++++++
include/linux/uprobes.h | 9 ++
kernel/events/uprobes.c | 181 ++++++++++++++++++++++++++++++++++++++++-
4 files changed, 241 insertions(+), 3 deletions(-)


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