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| author | Peter Collingbourne <[email protected]> | 2023-03-10 04:29:14 +0000 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2023-03-28 23:20:16 +0000 |
| commit | 0a54864f8dfb64b64c84c9db6ff70e0e93690a33 (patch) | |
| tree | 00de1c53f4138a72acfca6559c7e66cc3ae54e3b /mm/debug_vm_pgtable.c | |
| parent | io-mapping: don't disable preempt on RT in io_mapping_map_atomic_wc(). (diff) | |
| download | kernel-0a54864f8dfb64b64c84c9db6ff70e0e93690a33.tar.gz kernel-0a54864f8dfb64b64c84c9db6ff70e0e93690a33.zip | |
kasan: remove PG_skip_kasan_poison flag
Code inspection reveals that PG_skip_kasan_poison is redundant with
kasantag, because the former is intended to be set iff the latter is the
match-all tag. It can also be observed that it's basically pointless to
poison pages which have kasantag=0, because any pages with this tag would
have been pointed to by pointers with match-all tags, so poisoning the
pages would have little to no effect in terms of bug detection.
Therefore, change the condition in should_skip_kasan_poison() to check
kasantag instead, and remove PG_skip_kasan_poison and associated flags.
Link: https://lkml.kernel.org/r/[email protected]
Link: https://linux-review.googlesource.com/id/I57f825f2eaeaf7e8389d6cf4597c8a5821359838
Signed-off-by: Peter Collingbourne <[email protected]>
Reviewed-by: Andrey Konovalov <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Evgenii Stepanov <[email protected]>
Cc: Vincenzo Frascino <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'mm/debug_vm_pgtable.c')
0 files changed, 0 insertions, 0 deletions