Kairui Song 2aa958c99c x86/kexec: Don't setup EFI info if EFI runtime is not enabled ... Kexec-ing a kernel with "efi=noruntime" on the first kernel's command line causes the following null pointer dereference: BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 #PF error: [normal kernel read fault] Call Trace: efi_runtime_map_copy+0x28/0x30 bzImage64_load+0x688/0x872 arch_kexec_kernel_image_load+0x6d/0x70 kimage_file_alloc_init+0x13e/0x220 __x64_sys_kexec_file_load+0x144/0x290 do_syscall_64+0x55/0x1a0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Just skip the EFI info setup if EFI runtime services are not enabled. [ bp: Massage commit message. ] Suggested-by: Dave Young <dyoung@redhat.com> Signed-off-by: Kairui Song <kasong@redhat.com> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Dave Young <dyoung@redhat.com> Cc: AKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: bhe@redhat.com Cc: David Howells <dhowells@redhat.com> Cc: erik.schmauss@intel.com Cc: fanc.fnst@cn.fujitsu.com Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: kexec@lists.infradead.org Cc: lenb@kernel.org Cc: linux-acpi@vger.kernel.org Cc: Philipp Rudo <prudo@linux.vnet.ibm.com> Cc: rafael.j.wysocki@intel.com Cc: robert.moore@intel.com Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86-ml <x86@kernel.org> Cc: Yannik Sembritzki <yannik@sembritzki.me> Link: https://lkml.kernel.org/r/20190118111310.29589-2-kasong@redhat.com		2019-02-01 18:18:54 +01:00
..
boot	x86/boot/compressed/64: Set EFER.LME=1 in 32-bit trampoline before returning to long mode	2019-01-29 21:58:59 +01:00
configs	PCI: consolidate PCI config entry in drivers/pci	2018-11-23 11:45:34 +09:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2018-12-27 13:53:32 -08:00
entry	x86/entry/64/compat: Fix stack switching for XEN PV	2019-01-18 00:39:33 +01:00
events	Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-12-26 17:03:51 -08:00
hyperv	x86/hyper-v: Add HvFlushGuestAddressList hypercall support	2018-12-21 11:28:39 +01:00
ia32	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
include	x86/cpu: Add Atom Tremont (Jacobsville)	2019-01-29 16:37:35 +01:00
kernel	x86/kexec: Don't setup EFI info if EFI runtime is not enabled	2019-02-01 18:18:54 +01:00
kvm	jump_label: move 'asm goto' support test to Kconfig	2019-01-06 09:46:51 +09:00
lib	x86/kaslr: Fix incorrect i8254 outb() parameters	2019-01-11 21:35:47 +01:00
math-emu	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
mm	x86/fault: Fix sign-extend unintended sign extension	2019-01-29 21:58:59 +01:00
net	bpf: Add bpf_line_info support	2018-12-09 13:54:38 -08:00
oprofile
pci	pci-v4.21-changes	2019-01-05 17:57:34 -08:00
platform	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-12-26 18:42:51 -08:00
power	mm: remove include/linux/bootmem.h	2018-10-31 08:54:16 -07:00
purgatory
ras
realmode
tools	x86: Clean up 'sizeof x' => 'sizeof(x)'	2018-10-29 07:13:28 +01:00
um	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
video
xen	Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-12-26 17:03:51 -08:00
.gitignore
Kbuild	KVM: x86: Allow Qemu/KVM to use PVH entry point	2018-12-13 13:41:49 -05:00
Kconfig	x86/Kconfig: Select PCI_LOCKLESS_CONFIG if PCI is enabled	2019-01-22 17:06:28 +01:00
Kconfig.cpu
Kconfig.debug
Makefile	jump_label: move 'asm goto' support test to Kconfig	2019-01-06 09:46:51 +09:00
Makefile_32.cpu
Makefile.um	x86, powerpc: Remove -funit-at-a-time compiler option entirely	2018-12-09 11:55:32 +01:00