The patch titled
Subject: mm-use-stack_depot-for-recording-kmemleaks-backtrace-v3
has been added to the -mm mm-unstable branch. Its filename is
mm-use-stack_depot-for-recording-kmemleaks-backtrace-v3.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-use-stack_depot-for-recording-kmemleaks-backtrace-v3.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Zhaoyang Huang <zhaoyang.huang@xxxxxxxxxx>
Subject: mm-use-stack_depot-for-recording-kmemleaks-backtrace-v3
Date: Sun, 30 Oct 2022 11:42:34 +0800
changes of v2: fix bugs of stack_depot_init related issue
changes of v3: have DEBUG_KMEMLEAK select STACK_DEPOT by default
remove unuse functions
Link: https://lkml.kernel.org/r/1667101354-4669-1-git-send-email-zhaoyang.huang@xxxxxxxxxx
Signed-off-by: Zhaoyang Huang <zhaoyang.huang@xxxxxxxxxx>
Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: ke.wang <ke.wang@xxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Zhaoyang Huang <huangzhaoyang@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/Kconfig.debug | 1 +
mm/kmemleak.c | 19 ++++++-------------
2 files changed, 7 insertions(+), 13 deletions(-)
--- a/lib/Kconfig.debug~mm-use-stack_depot-for-recording-kmemleaks-backtrace-v3
+++ a/lib/Kconfig.debug
@@ -726,6 +726,7 @@ config DEBUG_KMEMLEAK
select STACKTRACE if STACKTRACE_SUPPORT
select KALLSYMS
select CRC32
+ select STACKDEPOT
help
Say Y here if you want to enable the memory leak
detector. The memory allocation/freeing is traced in a way
--- a/mm/kmemleak.c~mm-use-stack_depot-for-recording-kmemleaks-backtrace-v3
+++ a/mm/kmemleak.c
@@ -343,7 +343,7 @@ static bool unreferenced_object(struct k
* print_unreferenced function must be called with the object->lock held.
*/
static void print_unreferenced(struct seq_file *seq,
- struct kmemleak_object *object)
+ struct kmemleak_object *object)
{
int i;
unsigned long *entries;
@@ -352,10 +352,10 @@ static void print_unreferenced(struct se
nr_entries = stack_depot_fetch(object->trace_handle, &entries);
warn_or_seq_printf(seq, "unreferenced object 0x%08lx (size %zu):\n",
- object->pointer, object->size);
+ object->pointer, object->size);
warn_or_seq_printf(seq, " comm \"%s\", pid %d, jiffies %lu (age %d.%03ds)\n",
- object->comm, object->pid, object->jiffies,
- msecs_age / 1000, msecs_age % 1000);
+ object->comm, object->pid, object->jiffies,
+ msecs_age / 1000, msecs_age % 1000);
hex_dump_object(seq, object);
warn_or_seq_printf(seq, " backtrace:\n");
@@ -373,9 +373,9 @@ static void print_unreferenced(struct se
static void dump_object_info(struct kmemleak_object *object)
{
pr_notice("Object 0x%08lx (size %zu):\n",
- object->pointer, object->size);
+ object->pointer, object->size);
pr_notice(" comm \"%s\", pid %d, jiffies %lu\n",
- object->comm, object->pid, object->jiffies);
+ object->comm, object->pid, object->jiffies);
pr_notice(" min_count = %d\n", object->min_count);
pr_notice(" count = %d\n", object->count);
pr_notice(" flags = 0x%x\n", object->flags);
@@ -595,7 +595,6 @@ static struct kmemleak_object *find_and_
return object;
}
-#ifdef CONFIG_STACKDEPOT
static noinline depot_stack_handle_t set_track_prepare(void)
{
depot_stack_handle_t trace_handle;
@@ -609,12 +608,6 @@ static noinline depot_stack_handle_t set
return trace_handle;
}
-#else
-static inline depot_stack_handle_t set_track_prepare(void)
-{
- return 0;
-}
-#endif
/*
* Create the metadata (struct kmemleak_object) corresponding to an allocated
_
Patches currently in -mm which might be from zhaoyang.huang@xxxxxxxxxx are
mm-use-stack_depot-for-recording-kmemleaks-backtrace.patch
mm-use-stack_depot-for-recording-kmemleaks-backtrace-v3.patch
