eda47481b9
kpatch_process: fix possible double free. ptrace: fix NULL pointer access problem fix patched process crashing when acccess the global var fix probably restore cc symbol link fail when kill patch building uncourteous optimize: Remove unnecessary comparison code Signed-off-by: yezengruan <yezengruan@huawei.com> (cherry picked from commit f3d59711105eb667fa2f920958fcbdbb7068afd2)
32 lines
1022 B
Diff
32 lines
1022 B
Diff
From ca5e000a30eae58e84c98fef9c511ef61ec00fbe Mon Sep 17 00:00:00 2001
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From: Chuan Zheng <zhengchuan@huawei.com>
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Date: Mon, 26 Apr 2021 14:48:34 +0800
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Subject: [PATCH] gensrc: skip vector instruction in str_do_gotpcrel
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We might have "move (%rip) %0xmm0" in qemu hotpatch, which causes
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gensrc failure in str_do_gotpcrel.
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Fix it by skipping it because we do not need anything for vector command.
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---
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src/kpatch_gensrc.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/src/kpatch_gensrc.c b/src/kpatch_gensrc.c
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index a16b652..4f978f8 100644
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--- a/src/kpatch_gensrc.c
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+++ b/src/kpatch_gensrc.c
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@@ -291,6 +291,11 @@ void str_do_gotpcrel(struct kp_file *f, char *dst, char *src)
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goto out;
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}
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+ if (strstr(movdst.s, "%xmm") != NULL) {
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+ /* Is SSE (%xmm0, etc), bail out */
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+ goto out;
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+ }
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+
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/* Use full 64-bit counterpart of the destination register
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* as the auxiliary register */
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get_full_reg(&movdst, auxreg);
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--
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2.27.0
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