path: root/Documentation
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authorMarco Elver <>2021-02-25 17:19:31 -0800
committerLinus Torvalds <>2021-02-26 09:41:02 -0800
commitbc8fbc5f305aecf63423da91e5faf4c0ce40bf38 (patch)
treeb6dbe6c6c603fc730cd3db87d5b9fc5b0579f84d /Documentation
parent10efe55f883f2396a0024891ad1d7d5d040364b3 (diff)
kfence: add test suite
Add KFENCE test suite, testing various error detection scenarios. Makes use of KUnit for test organization. Since KFENCE's interface to obtain error reports is via the console, the test verifies that KFENCE outputs expected reports to the console. [ fix typo in test] Link: [ show access type in report] Link: Link: Signed-off-by: Alexander Potapenko <> Signed-off-by: Marco Elver <> Reviewed-by: Dmitry Vyukov <> Co-developed-by: Alexander Potapenko <> Reviewed-by: Jann Horn <> Cc: Andrey Konovalov <> Cc: Andrey Ryabinin <> Cc: Andy Lutomirski <> Cc: Borislav Petkov <> Cc: Catalin Marinas <> Cc: Christopher Lameter <> Cc: Dave Hansen <> Cc: David Rientjes <> Cc: Eric Dumazet <> Cc: Greg Kroah-Hartman <> Cc: Hillf Danton <> Cc: "H. Peter Anvin" <> Cc: Ingo Molnar <> Cc: Joern Engel <> Cc: Jonathan Corbet <> Cc: Joonsoo Kim <> Cc: Kees Cook <> Cc: Mark Rutland <> Cc: Paul E. McKenney <> Cc: Pekka Enberg <> Cc: Peter Zijlstra <> Cc: SeongJae Park <> Cc: Thomas Gleixner <> Cc: Vlastimil Babka <> Cc: Will Deacon <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'Documentation')
1 files changed, 6 insertions, 6 deletions
diff --git a/Documentation/dev-tools/kfence.rst b/Documentation/dev-tools/kfence.rst
index 0e2fb6ef3016..58a0a5fa1ddc 100644
--- a/Documentation/dev-tools/kfence.rst
+++ b/Documentation/dev-tools/kfence.rst
@@ -65,9 +65,9 @@ Error reports
A typical out-of-bounds access looks like this::
- BUG: KFENCE: out-of-bounds in test_out_of_bounds_read+0xa3/0x22b
+ BUG: KFENCE: out-of-bounds read in test_out_of_bounds_read+0xa3/0x22b
- Out-of-bounds access at 0xffffffffb672efff (1B left of kfence-#17):
+ Out-of-bounds read at 0xffffffffb672efff (1B left of kfence-#17):
@@ -94,9 +94,9 @@ its origin. Note that, real kernel addresses are only shown for
Use-after-free accesses are reported as::
- BUG: KFENCE: use-after-free in test_use_after_free_read+0xb3/0x143
+ BUG: KFENCE: use-after-free read in test_use_after_free_read+0xb3/0x143
- Use-after-free access at 0xffffffffb673dfe0 (in kfence-#24):
+ Use-after-free read at 0xffffffffb673dfe0 (in kfence-#24):
@@ -193,9 +193,9 @@ where it was not possible to determine an associated object, e.g. if adjacent
object pages had not yet been allocated::
- BUG: KFENCE: invalid access in test_invalid_access+0x26/0xe0
+ BUG: KFENCE: invalid read in test_invalid_access+0x26/0xe0
- Invalid access at 0xffffffffb670b00a:
+ Invalid read at 0xffffffffb670b00a: