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Revision tags: v6.15, v6.15-rc7, v6.15-rc6, v6.15-rc5, v6.15-rc4, v6.15-rc3, v6.15-rc2, v6.15-rc1, v6.14, v6.14-rc7, v6.14-rc6, v6.14-rc5, v6.14-rc4, v6.14-rc3, v6.14-rc2, v6.14-rc1, v6.13, v6.13-rc7, v6.13-rc6, v6.13-rc5, v6.13-rc4, v6.13-rc3, v6.13-rc2, v6.13-rc1, v6.12, v6.12-rc7, v6.12-rc6, v6.12-rc5, v6.12-rc4, v6.12-rc3, v6.12-rc2, v6.12-rc1, v6.11, v6.11-rc7, v6.11-rc6, v6.11-rc5, v6.11-rc4, v6.11-rc3, v6.11-rc2, v6.11-rc1, v6.10, v6.10-rc7, v6.10-rc6, v6.10-rc5, v6.10-rc4, v6.10-rc3, v6.10-rc2, v6.10-rc1, v6.9, v6.9-rc7, v6.9-rc6, v6.9-rc5, v6.9-rc4, v6.9-rc3, v6.9-rc2, v6.9-rc1, v6.8, v6.8-rc7, v6.8-rc6, v6.8-rc5, v6.8-rc4, v6.8-rc3, v6.8-rc2, v6.8-rc1, v6.7, v6.7-rc8, v6.7-rc7, v6.7-rc6, v6.7-rc5, v6.7-rc4, v6.7-rc3, v6.7-rc2, v6.7-rc1, v6.6, v6.6-rc7, v6.6-rc6, v6.6-rc5, v6.6-rc4, v6.6-rc3, v6.6-rc2, v6.6-rc1, v6.5, v6.5-rc7, v6.5-rc6, v6.5-rc5 |
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| #
a3793220 |
| 02-Aug-2023 |
Matthew Wilcox (Oracle) <[email protected]> |
mm: convert page_table_check_pte_set() to page_table_check_ptes_set()
Tell the page table check how many PTEs & PFNs we want it to check.
Link: https://lkml.kernel.org/r/20230802151406.3735276-3-wi
mm: convert page_table_check_pte_set() to page_table_check_ptes_set()
Tell the page table check how many PTEs & PFNs we want it to check.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Mike Rapoport (IBM) <[email protected]>
Acked-by: Pasha Tatashin <[email protected]>
Reviewed-by: Anshuman Khandual <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
show more ...
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Revision tags: v6.5-rc4, v6.5-rc3, v6.5-rc2 |
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| #
6d144436 |
| 13-Jul-2023 |
Kemeng Shi <[email protected]> |
mm/page_table_check: remove unused parameter in [__]page_table_check_pud_set
Remove unused addr in __page_table_check_pud_set and
page_table_check_pud_set.
Link: https://lkml.kernel.org/r/202307131
mm/page_table_check: remove unused parameter in [__]page_table_check_pud_set
Remove unused addr in __page_table_check_pud_set and
page_table_check_pud_set.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kemeng Shi <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
show more ...
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| #
a3b83713 |
| 13-Jul-2023 |
Kemeng Shi <[email protected]> |
mm/page_table_check: remove unused parameter in [__]page_table_check_pmd_set
Remove unused addr in __page_table_check_pmd_set and
page_table_check_pmd_set.
Link: https://lkml.kernel.org/r/202307131
mm/page_table_check: remove unused parameter in [__]page_table_check_pmd_set
Remove unused addr in __page_table_check_pmd_set and
page_table_check_pmd_set.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kemeng Shi <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
show more ...
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| #
1066293d |
| 13-Jul-2023 |
Kemeng Shi <[email protected]> |
mm/page_table_check: remove unused parameter in [__]page_table_check_pte_set
Remove unused addr in __page_table_check_pte_set and
page_table_check_pte_set.
Link: https://lkml.kernel.org/r/202307131
mm/page_table_check: remove unused parameter in [__]page_table_check_pte_set
Remove unused addr in __page_table_check_pte_set and
page_table_check_pte_set.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kemeng Shi <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
show more ...
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| #
931c38e1 |
| 13-Jul-2023 |
Kemeng Shi <[email protected]> |
mm/page_table_check: remove unused parameter in [__]page_table_check_pud_clear
Remove unused addr in __page_table_check_pud_clear and
page_table_check_pud_clear.
Link: https://lkml.kernel.org/r/202
mm/page_table_check: remove unused parameter in [__]page_table_check_pud_clear
Remove unused addr in __page_table_check_pud_clear and
page_table_check_pud_clear.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kemeng Shi <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
show more ...
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| #
1831414c |
| 13-Jul-2023 |
Kemeng Shi <[email protected]> |
mm/page_table_check: remove unused parameter in [__]page_table_check_pmd_clear
Remove unused addr in page_table_check_pmd_clear and
__page_table_check_pmd_clear.
Link: https://lkml.kernel.org/r/202
mm/page_table_check: remove unused parameter in [__]page_table_check_pmd_clear
Remove unused addr in page_table_check_pmd_clear and
__page_table_check_pmd_clear.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kemeng Shi <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
show more ...
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| #
aa232204 |
| 13-Jul-2023 |
Kemeng Shi <[email protected]> |
mm/page_table_check: remove unused parameter in [__]page_table_check_pte_clear
Remove unused addr in page_table_check_pte_clear and
__page_table_check_pte_clear.
Link: https://lkml.kernel.org/r/202
mm/page_table_check: remove unused parameter in [__]page_table_check_pte_clear
Remove unused addr in page_table_check_pte_clear and
__page_table_check_pte_clear.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kemeng Shi <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
show more ...
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Revision tags: v6.5-rc1, v6.4, v6.4-rc7, v6.4-rc6, v6.4-rc5, v6.4-rc4, v6.4-rc3, v6.4-rc2, v6.4-rc1, v6.3, v6.3-rc7, v6.3-rc6, v6.3-rc5, v6.3-rc4, v6.3-rc3, v6.3-rc2, v6.3-rc1, v6.2, v6.2-rc8, v6.2-rc7, v6.2-rc6, v6.2-rc5, v6.2-rc4, v6.2-rc3, v6.2-rc2, v6.2-rc1, v6.1, v6.1-rc8, v6.1-rc7, v6.1-rc6, v6.1-rc5, v6.1-rc4, v6.1-rc3, v6.1-rc2, v6.1-rc1, v6.0, v6.0-rc7, v6.0-rc6, v6.0-rc5, v6.0-rc4, v6.0-rc3, v6.0-rc2, v6.0-rc1, v5.19, v5.19-rc8, v5.19-rc7, v5.19-rc6, v5.19-rc5, v5.19-rc4, v5.19-rc3, v5.19-rc2, v5.19-rc1, v5.18, v5.18-rc7, v5.18-rc6, v5.18-rc5, v5.18-rc4, v5.18-rc3, v5.18-rc2, v5.18-rc1, v5.17, v5.17-rc8, v5.17-rc7, v5.17-rc6, v5.17-rc5, v5.17-rc4, v5.17-rc3 |
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| #
80110bbf |
| 04-Feb-2022 |
Pasha Tatashin <[email protected]> |
mm/page_table_check: check entries at pmd levels
syzbot detected a case where the page table counters were not properly
updated.
syzkaller login: ------------[ cut here ]------------
kernel BU
mm/page_table_check: check entries at pmd levels
syzbot detected a case where the page table counters were not properly
updated.
syzkaller login: ------------[ cut here ]------------
kernel BUG at mm/page_table_check.c:162!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 3099 Comm: pasha Not tainted 5.16.0+ #48
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIO4
RIP: 0010:__page_table_check_zero+0x159/0x1a0
Call Trace:
free_pcp_prepare+0x3be/0xaa0
free_unref_page+0x1c/0x650
free_compound_page+0xec/0x130
free_transhuge_page+0x1be/0x260
__put_compound_page+0x90/0xd0
release_pages+0x54c/0x1060
__pagevec_release+0x7c/0x110
shmem_undo_range+0x85e/0x1250
...
The repro involved having a huge page that is split due to uprobe event
temporarily replacing one of the pages in the huge page. Later the huge
page was combined again, but the counters were off, as the PTE level was
not properly updated.
Make sure that when PMD is cleared and prior to freeing the level the
PTEs are updated.
Link: https://lkml.kernel.org/r/[email protected]
Fixes: df4e817b7108 ("mm: page table check")
Signed-off-by: Pasha Tatashin <[email protected]>
Acked-by: David Rientjes <[email protected]>
Cc: Aneesh Kumar K.V <[email protected]>
Cc: Anshuman Khandual <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Greg Thelen <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Slaby <[email protected]>
Cc: Mike Rapoport <[email protected]>
Cc: Muchun Song <[email protected]>
Cc: Paul Turner <[email protected]>
Cc: Wei Xu <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Zi Yan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
show more ...
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Revision tags: v5.17-rc2, v5.17-rc1 |
|
| #
df4e817b |
| 14-Jan-2022 |
Pasha Tatashin <[email protected]> |
mm: page table check
Check user page table entries at the time they are added and removed.
Allows to synchronously catch memory corruption issues related to double
mapping.
When a pte for an anony
mm: page table check
Check user page table entries at the time they are added and removed.
Allows to synchronously catch memory corruption issues related to double
mapping.
When a pte for an anonymous page is added into page table, we verify
that this pte does not already point to a file backed page, and vice
versa if this is a file backed page that is being added we verify that
this page does not have an anonymous mapping
We also enforce that read-only sharing for anonymous pages is allowed
(i.e. cow after fork). All other sharing must be for file pages.
Page table check allows to protect and debug cases where "struct page"
metadata became corrupted for some reason. For example, when refcnt or
mapcount become invalid.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Pasha Tatashin <[email protected]>
Cc: Aneesh Kumar K.V <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Greg Thelen <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Slaby <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Masahiro Yamada <[email protected]>
Cc: Mike Rapoport <[email protected]>
Cc: Muchun Song <[email protected]>
Cc: Paul Turner <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Sami Tolvanen <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Wei Xu <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
show more ...
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