[PATCH v11 3/9] arm64: add copy_to/from_user to kprobes blacklist
From: 平松雅巳 / HIRAMATU，MASAMI <hidden>
Date: 2016-03-17 12:04:37
Also in:
lkml
From: "David A. Long" <redacted> Currrently taking exceptions when accessing user data from a kprobe'd instruction doesn't work. Avoid this situation by blacklisting the relevant functions. Signed-off-by: David A. Long <redacted>
Looks good to me. Reviewed-by: Masami Hiramatsu <redacted> Thanks,
quoted hunk ↗ jump to hunk
--- arch/arm64/lib/copy_from_user.S | 1 + arch/arm64/lib/copy_to_user.S | 1 + 2 files changed, 2 insertions(+)diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S index 4699cd7..0ac2131 100644 --- a/arch/arm64/lib/copy_from_user.S +++ b/arch/arm64/lib/copy_from_user.S@@ -66,6 +66,7 @@.endm end .req x5 + .section .kprobes.text,"ax",%progbits ENTRY(__copy_from_user) ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_HAS_PAN, \ CONFIG_ARM64_PAN)diff --git a/arch/arm64/lib/copy_to_user.S b/arch/arm64/lib/copy_to_user.S index 7512bbb..e4eb84c 100644 --- a/arch/arm64/lib/copy_to_user.S +++ b/arch/arm64/lib/copy_to_user.S@@ -65,6 +65,7 @@.endm end .req x5 + .section .kprobes.text,"ax",%progbits ENTRY(__copy_to_user) ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_HAS_PAN, \ CONFIG_ARM64_PAN) -- 2.5.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel at lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel