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selftests, x86, protection_keys: fix wrong offset in siginfo

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The siginfo contains a bunch of information about the fault.
For protection keys, it tells us which protection key's
permissions were violated.

The wrong offset in here leads to reading garbage and thus
failures in the tests.

We should probably eventually move this over to using the
kernel's headers defining the siginfo instead of a hard-coded
offset.  But, for now, just do the simplest fix.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
This commit is contained in:
Dave Hansen 2017-02-03 10:51:35 -08:00 committed by Shuah Khan
parent 16846c2d96
commit 2195bff041
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/x86/protection_keys.c
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@ -192,7 +192,7 @@ void lots_o_noops_around_write(int *write_to_me)
#define SYS_pkey_alloc 381
#define SYS_pkey_free 382
#define REG_IP_IDX REG_EIP
#define si_pkey_offset 0x18
#define si_pkey_offset 0x14
#else
#define SYS_mprotect_key 329
#define SYS_pkey_alloc 330