| Message ID | 166994750386.439920.1754385804350980158.stgit@devnote3 (mailing list archive) |
|---|---|
| Headers | show |
| Series | arm64: kprobes: Fix bugs in kprobes for arm64 | expand |
On Fri, 2 Dec 2022 11:18:23 +0900, Masami Hiramatsu (Google) wrote: > Here is the 2nd version of the kprobe bugfixes on arm64. The previous > series is here; > > https://lore.kernel.org/all/166990553243.253128.13594802750635478633.stgit@devnote3/T/#u > > The first one is a critical issue, which will cause a kernel crach > easily with lockdep[1/3]. Others are minor issues and rare cases. > The [2/3] let do_page_fault() fixup the page fault in kprobes user > handler, and [3/3] is more like code cleanup and returns > DBG_HOOK_ERROR if it can not handle kprobe's BRK (but that > should not happen.) > > [...] Applied to arm64 (for-next/kprobes), thanks! [1/3] arm64: Prohibit instrumentation on arch_stack_walk() https://git.kernel.org/arm64/c/0fbcd8abf337 [2/3] arm64: kprobes: Let arch do_page_fault() fix up page fault in user handler https://git.kernel.org/arm64/c/30a421552373 [3/3] arm64: kprobes: Return DBG_HOOK_ERROR if kprobes can not handle a BRK https://git.kernel.org/arm64/c/3b84efc066f8 Cheers,
Hi, Here is the 2nd version of the kprobe bugfixes on arm64. The previous series is here; https://lore.kernel.org/all/166990553243.253128.13594802750635478633.stgit@devnote3/T/#u The first one is a critical issue, which will cause a kernel crach easily with lockdep[1/3]. Others are minor issues and rare cases. The [2/3] let do_page_fault() fixup the page fault in kprobes user handler, and [3/3] is more like code cleanup and returns DBG_HOOK_ERROR if it can not handle kprobe's BRK (but that should not happen.) In this version I update to use noinstr and __always_inline [1/3] and update comments[3/3]. Also add Mark's Ack (Thanks!) Thank you, --- Masami Hiramatsu (Google) (3): arm64: Prohibit instrumentation on arch_stack_walk() arm64: kprobes: Let arch do_page_fault() fix up page fault in user handler arm64: kprobes: Return DBG_HOOK_ERROR if kprobes can not handle a BRK arch/arm64/kernel/probes/kprobes.c | 86 +++++++++++++++--------------------- arch/arm64/kernel/stacktrace.c | 10 ++-- 2 files changed, 41 insertions(+), 55 deletions(-) -- Masami Hiramatsu (Google) <mhiramat@kernel.org>