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authorMarco Elver <elver@google.com>2021-11-05 13:35:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-06 13:30:33 -0700
commit7594b34774294ff23a32506b8b874d6425a1481a (patch)
tree4a93e328f2f182cb9f8c7b9a230542f5e9abf875
parent11ac25c62cd2f3bb8da9e1df2e71afdebe76f093 (diff)
kasan: common: provide can_alloc in kasan_save_stack()
Add another argument, can_alloc, to kasan_save_stack() which is passed as-is to __stack_depot_save(). No functional change intended. Link: https://lkml.kernel.org/r/20210913112609.2651084-5-elver@google.com Signed-off-by: Marco Elver <elver@google.com> Tested-by: Shuah Khan <skhan@linuxfoundation.org> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> Cc: Lai Jiangshan <jiangshanlai@gmail.com> Cc: Taras Madan <tarasmadan@google.com> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vijayanand Jitta <vjitta@codeaurora.org> Cc: Vinayak Menon <vinmenon@codeaurora.org> Cc: Walter Wu <walter-zh.wu@mediatek.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/kasan/common.c6
-rw-r--r--mm/kasan/generic.c2
-rw-r--r--mm/kasan/kasan.h2
3 files changed, 5 insertions, 5 deletions
diff --git a/mm/kasan/common.c b/mm/kasan/common.c
index 2baf121fb8c5..3e0999892c36 100644
--- a/mm/kasan/common.c
+++ b/mm/kasan/common.c
@@ -30,20 +30,20 @@
#include "kasan.h"
#include "../slab.h"
-depot_stack_handle_t kasan_save_stack(gfp_t flags)
+depot_stack_handle_t kasan_save_stack(gfp_t flags, bool can_alloc)
{
unsigned long entries[KASAN_STACK_DEPTH];
unsigned int nr_entries;
nr_entries = stack_trace_save(entries, ARRAY_SIZE(entries), 0);
nr_entries = filter_irq_stacks(entries, nr_entries);
- return stack_depot_save(entries, nr_entries, flags);
+ return __stack_depot_save(entries, nr_entries, flags, can_alloc);
}
void kasan_set_track(struct kasan_track *track, gfp_t flags)
{
track->pid = current->pid;
- track->stack = kasan_save_stack(flags);
+ track->stack = kasan_save_stack(flags, true);
}
#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
diff --git a/mm/kasan/generic.c b/mm/kasan/generic.c
index c3f5ba7a294a..2a8e59e6326d 100644
--- a/mm/kasan/generic.c
+++ b/mm/kasan/generic.c
@@ -345,7 +345,7 @@ void kasan_record_aux_stack(void *addr)
return;
alloc_meta->aux_stack[1] = alloc_meta->aux_stack[0];
- alloc_meta->aux_stack[0] = kasan_save_stack(GFP_NOWAIT);
+ alloc_meta->aux_stack[0] = kasan_save_stack(GFP_NOWAIT, true);
}
void kasan_set_free_info(struct kmem_cache *cache,
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index 8bf568a80eb8..fa6b48d08513 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -251,7 +251,7 @@ void kasan_report_invalid_free(void *object, unsigned long ip);
struct page *kasan_addr_to_page(const void *addr);
-depot_stack_handle_t kasan_save_stack(gfp_t flags);
+depot_stack_handle_t kasan_save_stack(gfp_t flags, bool can_alloc);
void kasan_set_track(struct kasan_track *track, gfp_t flags);
void kasan_set_free_info(struct kmem_cache *cache, void *object, u8 tag);
struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,