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45ff3c5595
linux_dsm_epyc7002/arch/powerpc/mm
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Christophe Leroy 45ff3c5595 powerpc/kasan: Fix parallel loading of modules. 
Parallel loading of modules may lead to bad setup of shadow page table
entries.

First, lets align modules so that two modules never share the same
shadow page.

Second, ensure that two modules cannot allocate two page tables for
the same PMD entry at the same time. This is done by using
init_mm.page_table_lock in the same way as __pte_alloc_kernel()

Fixes: 2edb16efc8 ("powerpc/32: Add KASAN support")
Cc: stable@vger.kernel.org # v5.2+
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/c97284f912128cbc3f2fe09d68e90e65fb3e6026.1565361876.git.christophe.leroy@c-s.fr
2019-08-20 21:22:11 +10:00
..
book3s32 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
book3s64 powerpc/pseries: Fix cpu_hotplug_lock acquisition in resize_hpt() 2019-08-19 13:20:23 +10:00
kasan powerpc/kasan: Fix parallel loading of modules. 2019-08-20 21:22:11 +10:00
nohash powerpc/64e: Drop stale call to smp_processor_id() which hangs SMP startup 2019-08-12 22:56:57 +10:00
ptdump powerpc/ptdump: drop non vital #ifdefs 2019-08-20 21:22:09 +10:00
copro_fault.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 153 2019-05-30 11:26:32 -07:00
dma-noncoherent.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
drmem.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
fault.c mm, kprobes: generalize and rename notify_page_fault() as kprobe_page_fault() 2019-07-16 19:23:22 -07:00
highmem.c powerpc/highmem: Change BUG_ON() to WARN_ON() 2019-04-20 22:02:11 +10:00
hugetlbpage.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
init_32.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
init_64.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
init-common.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
Makefile powerpc/mm: fix redundant inclusion of pgtable-frag.o in Makefile 2019-05-06 20:21:56 +10:00
mem.c powerpc fixes for 5.3 #2 2019-07-24 09:58:39 -07:00
mmap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
mmu_context.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
mmu_decl.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
numa.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
pgtable_32.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
pgtable_64.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
pgtable-frag.c mm: treewide: remove unused address argument from pte_alloc functions 2019-01-04 13:13:47 -08:00
pgtable.c powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
slice.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00