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| author | Miaohe Lin <[email protected]> | 2022-05-26 11:33:50 +0000 |
|---|---|---|
| committer | akpm <[email protected]> | 2022-05-27 15:55:18 +0000 |
| commit | 24c8e27e63224ce832b4723cb60632d3eddb55de (patch) | |
| tree | 7bfdfa301eb22eacbc930dbfc807823350146848 /drivers/pci/controller/dwc/pcie-qcom-ep.c | |
| parent | kexec_file: drop weak attribute from arch_kexec_apply_relocations[_add] (diff) | |
| download | kernel-24c8e27e63224ce832b4723cb60632d3eddb55de.tar.gz kernel-24c8e27e63224ce832b4723cb60632d3eddb55de.zip | |
mm/page_table_check: fix accessing unmapped ptep
ptep is unmapped too early, so ptep could theoretically be accessed while
it's unmapped. This might become a problem if/when CONFIG_HIGHPTE becomes
available on riscv.
Fix it by deferring pte_unmap() until page table checking is done.
[[email protected]: account for ptep alteration, per Matthew]
Link: https://lkml.kernel.org/r/[email protected]
Fixes: 80110bbfbba6 ("mm/page_table_check: check entries at pmd levels")
Signed-off-by: Miaohe Lin <[email protected]>
Acked-by: Pasha Tatashin <[email protected]>
Cc: Qi Zheng <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: David Rientjes <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-qcom-ep.c')
0 files changed, 0 insertions, 0 deletions