Alexandre Ghiti 5f64261374 mm: add a call to flush_cache_vmap() in vmap_pfn() ... commit a50420c797 upstream. flush_cache_vmap() must be called after new vmalloc mappings are installed in the page table in order to allow architectures to make sure the new mapping is visible. It could lead to a panic since on some architectures (like powerpc), the page table walker could see the wrong pte value and trigger a spurious page fault that can not be resolved (see commit f1cb8f9beb ("powerpc/64s/radix: avoid ptesync after set_pte and ptep_set_access_flags")). But actually the patch is aiming at riscv: the riscv specification allows the caching of invalid entries in the TLB, and since we recently removed the vmalloc page fault handling, we now need to emit a tlb shootdown whenever a new vmalloc mapping is emitted (https://lore.kernel.org/linux-riscv/20230725132246.817726-1-alexghiti@rivosinc.com/). That's a temporary solution, there are ways to avoid that :) Link: https://lkml.kernel.org/r/20230809164633.1556126-1-alexghiti@rivosinc.com Fixes: 3e9a9e256b ("mm: add a vmap_pfn function") Reported-by: Dylan Jhong <dylan@andestech.com> Closes: https://lore.kernel.org/linux-riscv/ZMytNY2J8iyjbPPy@atctrx.andestech.com/ Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com> Acked-by: Palmer Dabbelt <palmer@rivosinc.com> Reviewed-by: Dylan Jhong <dylan@andestech.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-08-30 16:18:16 +02:00
..
damon	mm/damon/ops-common: atomically test and clear young on ptes and pmds	2023-07-23 13:47:47 +02:00
kasan	panic: Consolidate open-coded panic_on_warn checks	2023-02-01 08:27:22 +01:00
kfence	mm: kfence: fix using kfence_metadata without initialization in show_object()	2023-03-30 12:48:01 +02:00
backing-dev.c	writeback, cgroup: fix null-ptr-deref write in bdi_split_work_to_wbs	2023-05-11 23:00:18 +09:00
balloon_compaction.c
bootmem_info.c	bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem	2022-08-31 17:16:48 +02:00
cleancache.c
cma.c	Revert "mm/cma.c: remove redundant cma_mutex lock"	2022-06-09 10:23:27 +02:00
cma.h
cma_debug.c
cma_sysfs.c
compaction.c	mm, compaction: fix fast_isolate_around() to stay within boundaries	2023-01-12 11:58:47 +01:00
debug.c
debug_page_ref.c
debug_vm_pgtable.c
dmapool.c
early_ioremap.c
fadvise.c
failslab.c
filemap.c	mm/filemap: fix page end in filemap_get_read_batch	2023-02-22 12:57:10 +01:00
frontswap.c
gup.c	mm/migration: return errno when isolate_huge_page failed	2023-02-14 19:17:56 +01:00
gup_test.c
gup_test.h
highmem.c	highmem: fix checks in __kmap_local_sched_{in,out}	2022-04-13 20:59:21 +02:00
hmm.c	mm/hmm: fault non-owner device private entries	2022-08-03 12:03:54 +02:00
huge_memory.c	mm/userfaultfd: propagate uffd-wp bit when PTE-mapping the huge zeropage	2023-03-22 13:31:35 +01:00
hugetlb.c	mm/migration: return errno when isolate_huge_page failed	2023-02-14 19:17:56 +01:00
hugetlb_cgroup.c
hugetlb_vmemmap.c
hugetlb_vmemmap.h
hwpoison-inject.c	mm/hwpoison: avoid the impact of hwpoison_filter() return value on mce handler	2022-07-12 16:35:05 +02:00
init-mm.c
internal.h
interval_tree.c
io-mapping.c
ioremap.c
Kconfig
Kconfig.debug
khugepaged.c	mm/khugepaged: check again on anon uffd-wp during isolation	2023-04-26 13:51:52 +02:00
kmemleak.c	Revert "mm: kmemleak: take a full lowmem check in kmemleak_*_phys()"	2022-09-15 11:30:00 +02:00
ksm.c
list_lru.c
maccess.c	maccess: Fix writing offset in case of fault in strncpy_from_kernel_nofault()	2022-11-26 09:24:47 +01:00
madvise.c	mm: fix madivse_pageout mishandling on non-LRU page	2022-10-05 10:39:39 +02:00
Makefile
mapping_dirty_helpers.c
memblock.c	Revert "mm: Always release pages to the buddy allocator in memblock_free_late()."	2023-02-22 12:57:07 +01:00
memcontrol.c	mm: memcontrol: deprecate charge moving	2023-03-10 09:40:09 +01:00
memfd.c	memfd: check for non-NULL file_seals in memfd_create() syscall	2023-06-28 10:29:45 +02:00
memory-failure.c	mm/migration: return errno when isolate_huge_page failed	2023-02-14 19:17:56 +01:00
memory.c	mm, hwpoison: when copy-on-write hits poison, take page offline	2023-07-05 18:25:04 +01:00
memory_hotplug.c	mm/migration: return errno when isolate_huge_page failed	2023-02-14 19:17:56 +01:00
mempolicy.c	migrate: hugetlb: check for hugetlb shared PMD in node migration	2023-02-14 19:17:56 +01:00
mempool.c
memremap.c	mm/memremap.c: map FS_DAX device memory as decrypted	2022-11-16 09:58:27 +01:00
memtest.c
migrate.c	mm/migration: return errno when isolate_huge_page failed	2023-02-14 19:17:56 +01:00
mincore.c
mlock.c	mm/mlock: fix potential imbalanced rlimit ucounts adjustment	2022-05-15 20:18:53 +02:00
mm_init.c
mmap.c	mm/mmap: undo ->mmap() when arch_validate_flags() fails	2022-10-26 12:34:24 +02:00
mmap_lock.c
mmu_gather.c	mm/khugepaged: fix GUP-fast interaction by sending IPI	2022-12-14 11:37:17 +01:00
mmu_notifier.c	mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove()	2022-04-27 14:38:58 +02:00
mmzone.c
mprotect.c
mremap.c	mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0)	2022-04-13 20:59:22 +02:00
msync.c
nommu.c
oom_kill.c	oom_kill.c: futex: delay the OOM reaper to allow time for proper futex cleanup	2022-04-27 14:38:58 +02:00
page-writeback.c	writeback: avoid use-after-free after removing device	2022-08-31 17:16:47 +02:00
page_alloc.c	mm/page_alloc: fix potential deadlock on zonelist_update_seq seqlock	2023-04-26 13:51:55 +02:00
page_counter.c
page_ext.c
page_idle.c
page_io.c	mm: fix unexpected zeroed page mapping with zram swap	2022-04-20 09:34:18 +02:00
page_isolation.c
page_owner.c
page_poison.c
page_reporting.c
page_reporting.h
page_vma_mapped.c
pagewalk.c	mm: pagewalk: Fix race between unmap and page walker	2022-09-08 12:28:05 +02:00
percpu-internal.h
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c
pgalloc-track.h
pgtable-generic.c
process_vm_access.c
ptdump.c	mm: pagewalk: Fix race between unmap and page walker	2022-09-08 12:28:05 +02:00
readahead.c
rmap.c	mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse	2022-09-05 10:30:07 +02:00
rodata_test.c
secretmem.c	mm: fix dereferencing possible ERR_PTR	2022-10-05 10:39:39 +02:00
shmem.c	shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs	2023-07-23 13:47:33 +02:00
shuffle.c
shuffle.h
slab.c	mm/slab: Fix undefined init_cache_node_node() for NUMA and !SMP	2023-03-30 12:47:56 +02:00
slab.h	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-27 14:38:51 +02:00
slab_common.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-27 14:38:51 +02:00
slob.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-27 14:38:51 +02:00
slub.c	mm: slub: fix flush_cpu_slab()/__free_slab() invocations in task context.	2022-09-28 11:11:44 +02:00
sparse-vmemmap.c
sparse.c
swap.c
swap_cgroup.c
swap_slots.c
swap_state.c	mm: swap: get rid of livelock in swapin readahead	2022-03-23 09:16:41 +01:00
swapfile.c	mm/swap: fix swap_info_struct race between swapoff and get_swap_pages()	2023-04-13 16:48:26 +02:00
truncate.c
usercopy.c	mm/usercopy: return 1 from hardened_usercopy __setup() handler	2022-04-08 14:24:14 +02:00
userfaultfd.c	mm: shmem: don't truncate page if memory failure happens	2022-11-26 09:24:28 +01:00
util.c	mm: vmalloc: introduce array allocation functions	2022-07-12 16:35:01 +02:00
vmacache.c
vmalloc.c	mm: add a call to flush_cache_vmap() in vmap_pfn()	2023-08-30 16:18:16 +02:00
vmpressure.c
vmscan.c	mm: __isolate_lru_page_prepare() in isolate_migratepages_block()	2022-12-08 11:28:44 +01:00
vmstat.c
workingset.c	memcg: sync flush only if periodic flush is delayed	2022-04-27 14:38:57 +02:00
z3fold.c
zbud.c
zpool.c
zsmalloc.c	zsmalloc: fix races between asynchronous zspage free and page migration	2022-06-06 08:43:39 +02:00
zswap.c