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| author | Peter Collingbourne <pcc@google.com> | 2023-03-10 05:29:14 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-03-29 01:20:16 +0200 |
| commit | 0a54864f8dfb64b64c84c9db6ff70e0e93690a33 (patch) | |
| tree | 00de1c53f4138a72acfca6559c7e66cc3ae54e3b /ipc/ipc_sysctl.c | |
| parent | io-mapping: don't disable preempt on RT in io_mapping_map_atomic_wc(). (diff) | |
| download | linux-0a54864f8dfb64b64c84c9db6ff70e0e93690a33.tar.xz linux-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/20230310042914.3805818-3-pcc@google.com
Link: https://linux-review.googlesource.com/id/I57f825f2eaeaf7e8389d6cf4597c8a5821359838
Signed-off-by: Peter Collingbourne <pcc@google.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'ipc/ipc_sysctl.c')
0 files changed, 0 insertions, 0 deletions