Max Filippov a3be911a5f xtensa: fix uaccess-related livelock in do_page_fault ... commit 7b9acbb6aa upstream. If a uaccess (e.g. get_user()) triggers a fault and there's a fault signal pending, the handler will return to the uaccess without having performed a uaccess fault fixup, and so the CPU will immediately execute the uaccess instruction again, whereupon it will livelock bouncing between that instruction and the fault handler. https://lore.kernel.org/lkml/20210121123140.GD48431@C02TD0UTHF1T.local/ Cc: stable@vger.kernel.org Reported-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-04-07 15:00:09 +02:00
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cache.c	xtensa: disable preemption around cache alias management calls	2020-11-16 02:13:16 -08:00
fault.c	xtensa: fix uaccess-related livelock in do_page_fault	2021-04-07 15:00:09 +02:00
highmem.c	mm: pgtable: add shortcuts for accessing kernel PMD and PTE	2020-06-09 09:39:13 -07:00
init.c	ARM, xtensa: highmem: avoid clobbering non-page aligned memory reservations	2020-11-04 10:42:57 +02:00
ioremap.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
kasan_init.c	mm: pgtable: add shortcuts for accessing kernel PMD and PTE	2020-06-09 09:39:13 -07:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
misc.S	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
mmu.c	mm: pgtable: add shortcuts for accessing kernel PMD and PTE	2020-06-09 09:39:13 -07:00
tlb.c	xtensa: fix TLB sanity checker	2019-11-26 11:33:39 -08:00