Andy Lutomirski a1a338e5b6 x86/entry/32: Unwind the ESPFIX stack earlier on exception entry ... Right now, we do some fancy parts of the exception entry path while SS might have a nonzero base: we fill in regs->ss and regs->sp, and we consider switching to the kernel stack. This results in regs->ss and regs->sp referring to a non-flat stack and it may result in overflowing the entry stack. The former issue means that we can try to call iret_exc on a non-flat stack, which doesn't work. Tested with selftests/x86/sigreturn_32. Fixes: 45d7b25574 ("x86/entry/32: Enter the kernel via trampoline stack") Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: stable@kernel.org		2019-11-21 19:37:44 +01:00
..
boot	x86, efi: Never relocate kernel below lowest acceptable address	2019-10-31 09:40:19 +01:00
configs	x86/defconfigs: Remove useless UEVENT_HELPER_PATH	2019-06-21 19:22:08 +02:00
crypto	crypto: x86/aes-ni - use AES library instead of single-use AES cipher	2019-09-09 23:48:41 +10:00
entry	x86/entry/32: Unwind the ESPFIX stack earlier on exception entry	2019-11-21 19:37:44 +01:00
events	perf/x86/uncore: Fix event group support	2019-10-28 11:02:01 +01:00
hyperv	x86/hyperv: Make vapic support x2apic mode	2019-10-15 10:57:09 +02:00
ia32	clone: fix CLONE_PIDFD support	2019-07-14 20:36:12 +02:00
include	x86/cpu_entry_area: Add guard page for entry stack on 32bit	2019-11-21 19:37:43 +01:00
kernel	x86/pti/32: Size initial_page_table correctly	2019-11-21 19:37:43 +01:00
kvm	KVM: x86/mmu: Take slots_lock when using kvm_mmu_zap_all_fast()	2019-11-14 16:21:22 +01:00
lib	x86/asm: Fix MWAITX C-state hint value	2019-10-08 13:25:24 +02:00
math-emu	x86/fpu/math-emu: Address fallthrough warnings	2019-08-12 20:35:05 +02:00
mm	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00
net	bpf: fix x64 JIT code generation for jmp to 1st insn	2019-08-01 13:12:09 -07:00
oprofile
pci	dma-mapping updates for 5.4:	2019-09-19 13:27:23 -07:00
platform	efi/x86: Do not clean dummy variable in kexec path	2019-10-07 15:24:36 +02:00
power	Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-17 12:04:39 -07:00
purgatory	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-28 13:37:41 -07:00
ras	RAS/CEC: Add CONFIG_RAS_CEC_DEBUG and move CEC debug features there	2019-06-08 17:39:24 +02:00
realmode	x86/realmode: Remove trampoline_status	2019-07-22 11:30:18 +02:00
tools	Merge branch 'x86-paravirt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-07-08 17:34:44 -07:00
um	um: Use real DMA barriers	2019-09-15 21:37:14 +02:00
video
xen	x86/xen/32: Simplify ring check in xen_iret_crit_fixup()	2019-11-19 21:58:28 +01:00
.gitignore
Kbuild	treewide: Add SPDX license identifier - Kbuild	2019-05-30 11:32:33 -07:00
Kconfig	x86/tsx: Add config options to set tsx=on|off|auto	2019-10-28 09:12:18 +01:00
Kconfig.cpu	x86/cpu: Create Zhaoxin processors architecture support file	2019-06-22 11:45:57 +02:00
Kconfig.debug	x86, perf: Fix the dependency of the x86 insn decoder selftest	2019-09-02 20:05:58 +02:00
Makefile	x86/build: Add -Wnoaddress-of-packed-member to REALMODE_CFLAGS, to silence GCC9 build warning	2019-08-28 17:31:31 +02:00
Makefile_32.cpu
Makefile.um