Andy Lutomirski 95443fc0d7 x86/entry/32: Fix FIXUP_ESPFIX_STACK with user CR3 ... commit 4a13b0e3e1 upstream. UNWIND_ESPFIX_STACK needs to read the GDT, and the GDT mapping that can be accessed via %fs is not mapped in the user pagetables. Use SGDT to find the cpu_entry_area mapping and read the espfix offset from that instead. Reported-and-tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: <stable@vger.kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-11-29 10:10:00 +01:00
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syscalls	x86/syscalls: Split the x32 syscalls into their own table	2019-07-22 10:31:23 +02:00
vdso	Kbuild updates for v5.4	2019-09-20 08:36:47 -07:00
vsyscall	Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2019-07-08 21:48:15 -07:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
calling.h	Merge branch master from git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git	2019-07-28 22:22:40 +02:00
common.c	x86/syscalls: Split the x32 syscalls into their own table	2019-07-22 10:31:23 +02:00
entry_32.S	x86/entry/32: Fix FIXUP_ESPFIX_STACK with user CR3	2019-11-29 10:10:00 +01:00
entry_64.S	Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-16 18:07:08 -07:00
entry_64_compat.S	x86/entry/64/compat: Fix stack switching for XEN PV	2019-01-18 00:39:33 +01:00
syscall_32.c	syscalls/x86: Unconditionally enable 'struct pt_regs' based syscalls on x86_64	2018-04-05 16:59:38 +02:00
syscall_64.c	x86/syscalls: Split the x32 syscalls into their own table	2019-07-22 10:31:23 +02:00
thunk_32.S	x86: Use CONFIG_PREEMPTION	2019-07-31 19:03:35 +02:00
thunk_64.S	x86: Use CONFIG_PREEMPTION	2019-07-31 19:03:35 +02:00