This bug was introduced by commit 9b19df292c666b57c407fed2496827c6aba05be2 ("mm/hugetlb.c: make huge_pte_offset() consistent and document behaviour"), but v4.4.219 and v4.9.219 haven't included it, so we needn't to apply my patch to these two stable trees. On 2020/4/22 3:56, Sasha Levin wrote: > Hi > > [This is an automated email] > > This commit has been processed because it contains a -stable tag. > The stable tag indicates that it's relevant for the following trees: all > > The bot has tested the following trees: v5.6.5, v5.5.18, v5.4.33, v4.19.116, v4.14.176, v4.9.219, v4.4.219. > > v5.6.5: Build OK! > v5.5.18: Build OK! > v5.4.33: Build OK! > v4.19.116: Build OK! > v4.14.176: Build OK! > v4.9.219: Failed to apply! Possible dependencies: > 166f61b9435a ("mm: codgin-style fixes") > 505a60e22560 ("asm-generic: introduce 5level-fixup.h") > 82b0f8c39a38 ("mm: join struct fault_env and vm_fault") > 953c66c2b22a ("mm: THP page cache support for ppc64") > c2febafc6773 ("mm: convert generic code to 5-level paging") > fd60775aea80 ("mm, thp: avoid unlikely branches for split_huge_pmd") > > v4.4.219: Failed to apply! Possible dependencies: > 01c8f1c44b83 ("mm, dax, gpu: convert vm_insert_mixed to pfn_t") > 0e749e54244e ("dax: increase granularity of dax_clear_blocks() operations") > 166f61b9435a ("mm: codgin-style fixes") > 34c0fd540e79 ("mm, dax, pmem: introduce pfn_t") > 505a60e22560 ("asm-generic: introduce 5level-fixup.h") > 52db400fcd50 ("pmem, dax: clean up clear_pmem()") > 5c6a84a3f455 ("mm/kasan: Switch to using __pa_symbol and lm_alias") > 82b0f8c39a38 ("mm: join struct fault_env and vm_fault") > 9973c98ecfda ("dax: add support for fsync/sync") > aac453635549 ("mm, oom: introduce oom reaper") > ac401cc78242 ("dax: New fault locking") > b2e0d1625e19 ("dax: fix lifetime of in-kernel dax mappings with dax_map_atomic()") > bae473a423f6 ("mm: introduce fault_env") > bc2466e42573 ("dax: Use radix tree entry lock to protect cow faults") > c2febafc6773 ("mm: convert generic code to 5-level paging") > e4b274915863 ("DAX: move RADIX_DAX_ definitions to dax.c") > f9fe48bece3a ("dax: support dirty DAX entries in radix tree") > > > NOTE: The patch will not be queued to stable trees until it is upstream. > > How should we proceed with this patch? > -- --- Regards, Longpeng(Mike)