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File crash-Fix-the-failure-of-reporting-vmcore-and-vmlinux-do-n.patch of Package crash

From fce91bec5bef534e52f3261cc289a21a2cdb5fe3 Mon Sep 17 00:00:00 2001
From: Tao Liu <ltao@redhat.com>
Date: Sun, 11 Jul 2021 22:30:22 +0800
Subject: [PATCH] Fix the failure of reporting vmcore and vmlinux do not match
 for kernels(<2.6.11)

Fix lookup of "linux_banner" symbol. It is reported as 'D' by current gdb as its
 section ".rodata" marked as writable in vmlinux

Fix the failure of reporting vmcore and vmlinux do not match for kernels(<2.6.11)
    
 There is a regression issue for kernels(<2.6.11) as below:
  
     $ crash 2.6.9-68.9/vmcore 2.6.9-68.9/vmlinux.gz
     ...
     GNU gdb (GDB) 10.2
     ...
     crash: /var/tmp/vmlinux.gz_GLsAvX and 2.6.9-68.9/vmcore do not match!
    
 The reason is that it needs to read out the address of linux banner with
 readmem() first, and then the read_string() will be able to read the data
 from linux banner. So, for the kernels(<2.6.11) case, lets still invoke
 get_symbol_data() to accomplish this. See the changes:
 [1] https://elixir.bootlin.com/linux/v2.6.10/source/init/version.c#L38
 [2] https://elixir.bootlin.com/linux/v2.6.11/source/init/version.c#L38
    
 Signed-off-by: Tao Liu <ltao@redhat.com>
 Signed-off-by: Lianbo Jiang <lijiang@redhat.com>

Index: crash-7.2.1/kernel.c
===================================================================
--- crash-7.2.1.orig/kernel.c
+++ crash-7.2.1/kernel.c
@@ -1021,6 +1021,7 @@ verify_version(void)
 	if (!(sp = symbol_search("linux_banner")))
 		error(FATAL, "linux_banner symbol does not exist?\n");
 	else if ((sp->type == 'R') || (sp->type == 'r') ||
+		(THIS_KERNEL_VERSION >= LINUX(2,6,11) && sp->type == 'D') ||
 		 (machine_type("ARM") && sp->type == 'T') ||
 		 (machine_type("ARM64")))
 		linux_banner = symbol_value("linux_banner");

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