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kmsan: use stack_depot_save instead of __stack_depot_save 

Make KMSAN use stack_depot_save instead of __stack_depot_save, as it
  always passes true to __stack_depot_save as the last argument.

Link: https://lkml.kernel.org/r/18092240699efdc6acd78b51e41ea782953e6c8d.1700502145.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Andrey Konovalov 2023-11-20 18:47:12 +01:00 committed by Andrew Morton
parent 4805180bc1
commit 3bddc3100c
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
mm/kmsan/core.c
View File

@ -76,7 +76,7 @@ depot_stack_handle_t kmsan_save_stack_with_flags(gfp_t flags,
/* Don't sleep. */
flags &= ~(__GFP_DIRECT_RECLAIM | __GFP_KSWAPD_RECLAIM);
handle = __stack_depot_save(entries, nr_entries, flags, true);
handle = stack_depot_save(entries, nr_entries, flags);
return stack_depot_set_extra_bits(handle, extra);
}
@ -185,11 +185,10 @@ depot_stack_handle_t kmsan_internal_chain_origin(depot_stack_handle_t id)
/*
* @entries is a local var in non-instrumented code, so KMSAN does not
* know it is initialized. Explicitly unpoison it to avoid false
* positives when __stack_depot_save() passes it to instrumented code.
* positives when stack_depot_save() passes it to instrumented code.
*/
kmsan_internal_unpoison_memory(entries, sizeof(entries), false);
handle = __stack_depot_save(entries, ARRAY_SIZE(entries), __GFP_HIGH,
true);
handle = stack_depot_save(entries, ARRAY_SIZE(entries), __GFP_HIGH);
return stack_depot_set_extra_bits(handle, extra_bits);
}