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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2018-12-14 15:26:20 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-20 09:07:53 +0200 |
| commit | 14c328b46e23fcac4d9e2e38b989827e612e6d1e (patch) | |
| tree | 30ddb8a74acfbb2a74d600b0a6811dddc9533d20 /drivers/misc/lkdtm.h | |
| parent | 52796ff1a545a6fe5d4a5504ae14b871134d0f76 (diff) | |
| download | linux-rt-14c328b46e23fcac4d9e2e38b989827e612e6d1e.tar.gz | |
lkdtm: Add tests for NULL pointer dereference
[ Upstream commit 59a12205d3c32aee4c13ca36889fdf7cfed31126 ]
Introduce lkdtm tests for NULL pointer dereference: check access or exec
at NULL address, since these errors tend to be reported differently from
the general fault error text. For example from x86:
pr_alert("BUG: unable to handle kernel %s at %px\n",
address < PAGE_SIZE ? "NULL pointer dereference" : "paging request",
(void *)address);
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/misc/lkdtm.h')
| -rw-r--r-- | drivers/misc/lkdtm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/misc/lkdtm.h b/drivers/misc/lkdtm.h index fdf954c2107f..6abc97b245e4 100644 --- a/drivers/misc/lkdtm.h +++ b/drivers/misc/lkdtm.h @@ -40,7 +40,9 @@ void lkdtm_EXEC_KMALLOC(void); void lkdtm_EXEC_VMALLOC(void); void lkdtm_EXEC_RODATA(void); void lkdtm_EXEC_USERSPACE(void); +void lkdtm_EXEC_NULL(void); void lkdtm_ACCESS_USERSPACE(void); +void lkdtm_ACCESS_NULL(void); /* lkdtm_rodata.c */ void lkdtm_rodata_do_nothing(void); |