Apply use-after-free and empty-symbol-table fixes to Linux 5.10

We cannot compile Linux 5.10 with toolchains involving GCC 12 or newer
without these patches.

Author: tautschnig

integration/linux/compile_linux.sh

@@ -32,6 +32,87 @@ ln -s goto-cc src/goto-cc/goto-g++
 configure_linux ()
 {
   pushd linux_5_10
+  # GCC >= 12 correctly reports (and fails with) use-after-free, which was
+  # eventually fixed in 5.16.11 (and 5.17+)
+  curl https://github.com/torvalds/linux/commit/52a9dab6d892763b2a8334a568bd4e2c1a6fde66.patch | patch -p1
+  # Some versions of binutils fail to generate a symbol table, pick up fix that
+  # eventually landed in 6.0, see
+  # https://github.com/torvalds/linux/commit/de979c83574abf6e78f3fa65b716515c91b2613d
+  cat > de979c83574abf6e78f3fa65b716515c91b2613d-adjusted.patch << "EOF"
+diff --git a/arch/x86/entry/Makefile b/arch/x86/entry/Makefile
+index 08bf95dbc..83c98dae7 100644
+--- a/arch/x86/entry/Makefile
++++ b/arch/x86/entry/Makefile
+@@ -21,12 +21,13 @@ CFLAGS_syscall_64.o		+= $(call cc-option,-Wno-override-init,)
+ CFLAGS_syscall_32.o		+= $(call cc-option,-Wno-override-init,)
+ CFLAGS_syscall_x32.o		+= $(call cc-option,-Wno-override-init,)
+ 
+-obj-y				:= entry_$(BITS).o thunk_$(BITS).o syscall_$(BITS).o
++obj-y				:= entry_$(BITS).o syscall_$(BITS).o
+ obj-y				+= common.o
+ 
+ obj-y				+= vdso/
+ obj-y				+= vsyscall/
+ 
++obj-$(CONFIG_PREEMPTION)	+= thunk_$(BITS).o
+ obj-$(CONFIG_IA32_EMULATION)	+= entry_64_compat.o syscall_32.o
+ obj-$(CONFIG_X86_X32_ABI)	+= syscall_x32.o
+ 
+diff --git a/arch/x86/entry/thunk_32.S b/arch/x86/entry/thunk_32.S
+index f1f96d4d8..5997ec0b4 100644
+--- a/arch/x86/entry/thunk_32.S
++++ b/arch/x86/entry/thunk_32.S
+@@ -29,10 +29,8 @@ SYM_CODE_START_NOALIGN(\name)
+ SYM_CODE_END(\name)
+ 	.endm
+ 
+-#ifdef CONFIG_PREEMPTION
+ 	THUNK preempt_schedule_thunk, preempt_schedule
+ 	THUNK preempt_schedule_notrace_thunk, preempt_schedule_notrace
+ 	EXPORT_SYMBOL(preempt_schedule_thunk)
+ 	EXPORT_SYMBOL(preempt_schedule_notrace_thunk)
+-#endif
+ 
+diff --git a/arch/x86/entry/thunk_64.S b/arch/x86/entry/thunk_64.S
+index ccd32877a..c7cf79be7 100644
+--- a/arch/x86/entry/thunk_64.S
++++ b/arch/x86/entry/thunk_64.S
+@@ -36,14 +36,11 @@ SYM_FUNC_END(\name)
+ 	_ASM_NOKPROBE(\name)
+ 	.endm
+ 
+-#ifdef CONFIG_PREEMPTION
+ 	THUNK preempt_schedule_thunk, preempt_schedule
+ 	THUNK preempt_schedule_notrace_thunk, preempt_schedule_notrace
+ 	EXPORT_SYMBOL(preempt_schedule_thunk)
+ 	EXPORT_SYMBOL(preempt_schedule_notrace_thunk)
+-#endif
+ 
+-#ifdef CONFIG_PREEMPTION
+ SYM_CODE_START_LOCAL_NOALIGN(.L_restore)
+ 	popq %r11
+ 	popq %r10
+@@ -58,4 +55,3 @@ SYM_CODE_START_LOCAL_NOALIGN(.L_restore)
+ 	ret
+ 	_ASM_NOKPROBE(.L_restore)
+ SYM_CODE_END(.L_restore)
+-#endif
+diff --git a/arch/x86/um/Makefile b/arch/x86/um/Makefile
+index 77f70b969..3113800da 100644
+--- a/arch/x86/um/Makefile
++++ b/arch/x86/um/Makefile
+@@ -27,7 +27,8 @@ else
+ 
+ obj-y += syscalls_64.o vdso/
+ 
+-subarch-y = ../lib/csum-partial_64.o ../lib/memcpy_64.o ../entry/thunk_64.o
++subarch-y = ../lib/csum-partial_64.o ../lib/memcpy_64.o
++subarch-$(CONFIG_PREEMPTION) += ../entry/thunk_64.o
+ 
+ endif
+ 
+EOF
+  patch -p1 < de979c83574abf6e78f3fa65b716515c91b2613d-adjusted.patch
 
   cat > kvm-config <<EOF
 CONFIG_64BIT=y