twx-linux

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Masami Hiramatsu e1f98fe352 x86/kprobes: Restore BTF if the single-stepping is cancelled

[ Upstream commit 78ff2733ff ]

Fix to restore BTF if single-stepping causes a page fault and
it is cancelled.

Usually the BTF flag was restored when the single stepping is done
(in resume_execution()). However, if a page fault happens on the
single stepping instruction, the fault handler is invoked and
the single stepping is cancelled. Thus, the BTF flag is not
restored.

Fixes: 1ecc798c67 ("x86: debugctlmsr kprobes")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/160389546985.106936.12727996109376240993.stgit@devnote2
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-12-29 13:47:01 +01:00

boot

x86/boot/compressed: Relax sed symbol type regex for LLVM ld.lld

2020-06-25 15:42:00 +02:00

configs

x86/defconfig: Enable CONFIG_USB_XHCI_HCD=y

2020-09-23 10:46:37 +02:00

crypto

crypto: aesni - add compatibility with IAS

2020-08-21 09:48:13 +02:00

entry

x86/entry/64: Fix unwind hints in register clearing code