From b077c3569788f5eb5ddf85bf41026b452d253a90 Mon Sep 17 00:00:00 2001 From: Qianli Zhao Date: Mon, 4 Jul 2022 16:40:01 +0800 Subject: [PATCH 09/28] arm64: Fix for st->_stext_vmlinux not initialized when set VA_BITS_ACTUAL Setting st->_stext_vmlinux to UNINITIALIZED to search for "_stext" from the vmlinux. In the scenario where kaslr is disabled and without vmcoreinfo, crash will get the wrong MODULES/VMALLOC ranges and cause a failure in parsing a raw RAM dumpfile. Signed-off-by: Qianli Zhao Signed-off-by: Lianbo Jiang --- arm64.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arm64.c b/arm64.c index 0f615cf52bef..b6b7aa11f4fe 100644 --- a/arm64.c +++ b/arm64.c @@ -149,6 +149,14 @@ arm64_init(int when) ms = machdep->machspec; + /* + * The st->_stext_vmlinux is needed in arm64_init(PRE_GDB) when a + * dumpfile does not have vmcoreinfo and we use -m vabits_actual + * option, e.g. a raw RAM dumpfile. + */ + if (ms->VA_BITS_ACTUAL) + st->_stext_vmlinux = UNINITIALIZED; + if (!ms->kimage_voffset && STREQ(pc->live_memsrc, "/dev/crash")) ioctl(pc->mfd, DEV_CRASH_ARCH_DATA, &ms->kimage_voffset); -- 2.37.1