diff options
| author | Alexander Potapenko <glider@google.com> | 2024-03-20 13:18:51 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-04-26 07:07:02 +0300 |
| commit | 61b258b0d2f60858888e248da9744d63e0fa6856 (patch) | |
| tree | f2c4a12387fe134282d69ba8e004f3086711e740 /fs | |
| parent | 922621a6828430ea3119b869336157d253489334 (diff) | |
| download | linux-61b258b0d2f60858888e248da9744d63e0fa6856.tar.xz | |
x86: call instrumentation hooks from copy_mc.c
Memory accesses in copy_mc_to_kernel() and copy_mc_to_user() are performed
by assembly routines and are invisible to KASAN, KCSAN, and KMSAN. Add
hooks from instrumentation.h to tell the tools these functions have
memcpy/copy_from_user semantics.
The call to copy_mc_fragile() in copy_mc_fragile_handle_tail() is left
intact, because the latter is only called from the assembly implementation
of copy_mc_fragile(), so the memory accesses in it are covered by the
instrumentation in copy_mc_to_kernel() and copy_mc_to_user().
Link: https://lore.kernel.org/all/3b7dbd88-0861-4638-b2d2-911c97a4cadf@I-love.SAKURA.ne.jp/
Link: https://lkml.kernel.org/r/20240320101851.2589698-3-glider@google.com
Signed-off-by: Alexander Potapenko <glider@google.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions