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authorDavid S. Miller <davem@davemloft.net>2016-12-03 11:46:54 -0500
committerDavid S. Miller <davem@davemloft.net>2016-12-03 12:29:53 -0500
commit2745529ac7358fdac72e6b388da2e934bd9da82c (patch)
tree245bb05b1a18189c5a5212db914c70a636d8267a /lib/test_kasan.c
parentab17cb1fea82b346bdecd4f2d7f0e84e80f847af (diff)
parent8dc0f265d39a3933f4c1f846c7c694f12a2ab88a (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Couple conflicts resolved here: 1) In the MACB driver, a bug fix to properly initialize the RX tail pointer properly overlapped with some changes to support variable sized rings. 2) In XGBE we had a "CONFIG_PM" --> "CONFIG_PM_SLEEP" fix overlapping with a reorganization of the driver to support ACPI, OF, as well as PCI variants of the chip. 3) In 'net' we had several probe error path bug fixes to the stmmac driver, meanwhile a lot of this code was cleaned up and reorganized in 'net-next'. 4) The cls_flower classifier obtained a helper function in 'net-next' called __fl_delete() and this overlapped with Daniel Borkamann's bug fix to use RCU for object destruction in 'net'. It also overlapped with Jiri's change to guard the rhashtable_remove_fast() call with a check against tc_skip_sw(). 5) In mlx4, a revert bug fix in 'net' overlapped with some unrelated changes in 'net-next'. 6) In geneve, a stale header pointer after pskb_expand_head() bug fix in 'net' overlapped with a large reorganization of the same code in 'net-next'. Since the 'net-next' code no longer had the bug in question, there was nothing to do other than to simply take the 'net-next' hunks. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib/test_kasan.c')
-rw-r--r--lib/test_kasan.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/test_kasan.c b/lib/test_kasan.c
index 5e51872b3fc1..fbdf87920093 100644
--- a/lib/test_kasan.c
+++ b/lib/test_kasan.c
@@ -20,6 +20,11 @@
20#include <linux/uaccess.h> 20#include <linux/uaccess.h>
21#include <linux/module.h> 21#include <linux/module.h>
22 22
23/*
24 * Note: test functions are marked noinline so that their names appear in
25 * reports.
26 */
27
23static noinline void __init kmalloc_oob_right(void) 28static noinline void __init kmalloc_oob_right(void)
24{ 29{
25 char *ptr; 30 char *ptr;
@@ -411,6 +416,29 @@ static noinline void __init copy_user_test(void)
411 kfree(kmem); 416 kfree(kmem);
412} 417}
413 418
419static noinline void __init use_after_scope_test(void)
420{
421 volatile char *volatile p;
422
423 pr_info("use-after-scope on int\n");
424 {
425 int local = 0;
426
427 p = (char *)&local;
428 }
429 p[0] = 1;
430 p[3] = 1;
431
432 pr_info("use-after-scope on array\n");
433 {
434 char local[1024] = {0};
435
436 p = local;
437 }
438 p[0] = 1;
439 p[1023] = 1;
440}
441
414static int __init kmalloc_tests_init(void) 442static int __init kmalloc_tests_init(void)
415{ 443{
416 kmalloc_oob_right(); 444 kmalloc_oob_right();
@@ -436,6 +464,7 @@ static int __init kmalloc_tests_init(void)
436 kasan_global_oob(); 464 kasan_global_oob();
437 ksize_unpoisons_memory(); 465 ksize_unpoisons_memory();
438 copy_user_test(); 466 copy_user_test();
467 use_after_scope_test();
439 return -EAGAIN; 468 return -EAGAIN;
440} 469}
441 470