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memdebug.diff
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memdebug.diff
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diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/Config.in.v2.4 mISDN-memdebug/drivers/isdn/Config.in.v2.4
--- mISDN/drivers/isdn/Config.in.v2.4 2008-07-15 09:49:45.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/Config.in.v2.4 2008-07-10 12:16:12.000000000 +0200
@@ -172,5 +172,6 @@
bool ' Winbond W6692 cards' CONFIG_MISDN_W6692
comment ' mISDN supported features'
bool ' mISDN audio DSP module' CONFIG_MISDN_DSP
+ bool ' mISDN memory leak debug' CONFIG_MISDN_MEMDEBUG
fi
endmenu
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/hardware/mISDN/Makefile mISDN-memdebug/drivers/isdn/hardware/mISDN/Makefile
--- mISDN/drivers/isdn/hardware/mISDN/Makefile 2008-07-15 10:54:52.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/hardware/mISDN/Makefile 2008-07-11 18:21:37.000000000 +0200
@@ -6,6 +6,9 @@
ifdef MINCLUDES
EXTRA_CFLAGS += -I$(MINCLUDES) -g
endif
+ifdef CONFIG_MISDN_MEMDEBUG
+EXTRA_CFLAGS += -DMISDN_MEMDEBUG
+endif
EXTRA_CFLAGS += -DMISDNVERSION=\"$(MISDNVERSION)\"
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/hardware/mISDN/Makefile.v2.6 mISDN-memdebug/drivers/isdn/hardware/mISDN/Makefile.v2.6
--- mISDN/drivers/isdn/hardware/mISDN/Makefile.v2.6 2008-07-15 09:50:37.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/hardware/mISDN/Makefile.v2.6 2008-07-10 12:16:49.000000000 +0200
@@ -6,6 +6,9 @@
ifdef MINCLUDES
EXTRA_CFLAGS += -I$(MINCLUDES) -g
endif
+ifdef CONFIG_MISDN_MEMDEBUG
+EXTRA_CFLAGS += -DMISDN_MEMDEBUG
+endif
EXTRA_CFLAGS += -DMISDNVERSION=\"$(MISDNVERSION)\"
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/hardware/mISDN/hfcmulti.c mISDN-memdebug/drivers/isdn/hardware/mISDN/hfcmulti.c
--- mISDN/drivers/isdn/hardware/mISDN/hfcmulti.c 2008-07-15 10:03:30.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/hardware/mISDN/hfcmulti.c 2008-07-15 09:47:25.000000000 +0200
@@ -144,6 +144,9 @@
#include <linux/delay.h>
#include <linux/mISDNhw.h>
#include <linux/mISDNdsp.h>
+#ifdef MISDN_MEMDEBUG
+#include "../../mISDN/memdbg.h"
+#endif
/*
#define IRQCOUNT_DEBUG
@@ -2099,6 +2102,10 @@
dch = hc->chan[ch].dch;
if ((!dch) && (!bch))
return;
+#ifdef MISDN_MEMDEBUG
+ if (dch && bch)
+ printk(KERN_ERR "%s: dch and bch set, correct it!\n", __func__);
+#endif
if (dch) {
if (!test_bit(FLG_ACTIVE, &dch->Flags))
return;
@@ -3280,6 +3287,10 @@
unsigned int id;
u_long flags;
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
+
switch (hh->prim) {
case PH_DATA_REQ:
if (skb->len < 1)
@@ -3422,6 +3433,10 @@
unsigned int id;
u_long flags;
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
+
switch (hh->prim) {
case PH_DATA_REQ:
if (!skb->len)
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/hardware/mISDN/hfcpci.c mISDN-memdebug/drivers/isdn/hardware/mISDN/hfcpci.c
--- mISDN/drivers/isdn/hardware/mISDN/hfcpci.c 2008-07-15 10:03:57.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/hardware/mISDN/hfcpci.c 2008-07-15 09:47:25.000000000 +0200
@@ -29,6 +29,9 @@
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/mISDNhw.h>
+#ifdef MISDN_MEMDEBUG
+#include "../../mISDN/memdbg.h"
+#endif
#include "hfc_pci.h"
@@ -1616,6 +1619,10 @@
unsigned int id;
u_long flags;
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
+
switch (hh->prim) {
case PH_DATA_REQ:
spin_lock_irqsave(&hc->lock, flags);
@@ -1699,6 +1706,10 @@
unsigned int id;
u_long flags;
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
+
switch (hh->prim) {
case PH_DATA_REQ:
spin_lock_irqsave(&hc->lock, flags);
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/hardware/mISDN/hfcs_usb.c mISDN-memdebug/drivers/isdn/hardware/mISDN/hfcs_usb.c
--- mISDN/drivers/isdn/hardware/mISDN/hfcs_usb.c 2008-07-15 10:04:17.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/hardware/mISDN/hfcs_usb.c 2008-07-15 09:47:25.000000000 +0200
@@ -26,6 +26,9 @@
#include <linux/pci.h>
#include <linux/mISDNhw.h>
#include <linux/isdn_compat.h>
+#ifdef MISDN_MEMDEBUG
+#include "../../mISDN/memdbg.h"
+#endif
#include "hfcs_usb.h"
#define DRIVER_NAME "hfcsusb"
@@ -225,6 +228,10 @@
struct mISDNhead *hh = mISDN_HEAD_P(skb);
u_long flags;
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
+
if (debug & DBG_HFC_CALL_TRACE)
printk (KERN_INFO "%s\n", __FUNCTION__);
@@ -287,6 +294,10 @@
struct mISDNhead *hh = mISDN_HEAD_P(skb);
u_long flags;
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
+
// TODO mbachem
return -EINVAL;
}
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/Kconfig.v2.6 mISDN-memdebug/drivers/isdn/mISDN/Kconfig.v2.6
--- mISDN/drivers/isdn/mISDN/Kconfig.v2.6 2008-07-15 10:52:55.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/Kconfig.v2.6 2008-07-10 12:16:49.000000000 +0200
@@ -10,6 +10,15 @@
if MISDN != n
+config MISDN_MEMDEBUG
+ bool "Enable memory leak debug for mISDN"
+ help
+ This option is for watching the use of several resources in mISDN.
+ It includes extra code to maintain list of allocated memory and
+ sk_buffs. On module unload you can see not freed resources an
+ their allocation orging and some object specific informations.
+ If unsure, say 'N'.
+
config MISDN_DSP
bool "Digital Audio Processing of transparent data"
help
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/Makefile mISDN-memdebug/drivers/isdn/mISDN/Makefile
--- mISDN/drivers/isdn/mISDN/Makefile 2008-07-15 10:54:52.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/Makefile 2008-07-11 18:21:37.000000000 +0200
@@ -6,6 +6,9 @@
ifdef MINCLUDES
EXTRA_CFLAGS += -I$(MINCLUDES) -g
endif
+ifdef CONFIG_MISDN_MEMDEBUG
+EXTRA_CFLAGS += -DMISDN_MEMDEBUG
+endif
EXTRA_CFLAGS += -DMISDNVERSION=\"$(MISDNVERSION)\"
@@ -24,6 +27,9 @@
# multi objects
mISDN_core-objs := core.o fsm.o socket.o hwchannel.o stack.o layer1.o layer2.o tei.o timerdev.o
+ifdef CONFIG_MISDN_MEMDEBUG
+mISDN_core-objs += memdbg.o
+endif
mISDN_dtmf-objs := dtmf.o
mISDN_dsp-objs := dsp_core.o dsp_cmx.o dsp_tones.o dsp_dtmf.o dsp_audio.o dsp_blowfish.o dsp_pipeline.o dsp_hwec.o
mISDN_dsp_mec2-objs := dsp_mec2.o
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/Makefile.v2.6 mISDN-memdebug/drivers/isdn/mISDN/Makefile.v2.6
--- mISDN/drivers/isdn/mISDN/Makefile.v2.6 2008-07-15 10:53:08.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/Makefile.v2.6 2008-07-10 12:16:49.000000000 +0200
@@ -6,6 +6,9 @@
ifdef MINCLUDES
EXTRA_CFLAGS += -I$(MINCLUDES) -g
endif
+ifdef CONFIG_MISDN_MEMDEBUG
+EXTRA_CFLAGS += -DMISDN_MEMDEBUG
+endif
EXTRA_CFLAGS += -DMISDNVERSION=\"$(MISDNVERSION)\"
@@ -24,6 +27,9 @@
# multi objects
mISDN_core-objs := core.o fsm.o socket.o hwchannel.o stack.o layer1.o layer2.o tei.o timerdev.o
+ifdef CONFIG_MISDN_MEMDEBUG
+mISDN_core-objs += memdbg.o
+endif
mISDN_dtmf-objs := dtmf.o
mISDN_dsp-objs := dsp_core.o dsp_cmx.o dsp_tones.o dsp_dtmf.o dsp_audio.o dsp_blowfish.o dsp_pipeline.o dsp_hwec.o
mISDN_dsp_mec2-objs := dsp_mec2.o
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/core.c mISDN-memdebug/drivers/isdn/mISDN/core.c
--- mISDN/drivers/isdn/mISDN/core.c 2008-07-15 10:39:59.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/core.c 2008-07-10 12:16:49.000000000 +0200
@@ -201,6 +201,11 @@
printk(KERN_INFO "Modular ISDN core version %d.%d.%d\n",
MISDN_MAJOR_VERSION, MISDN_MINOR_VERSION, MISDN_RELEASE);
+#ifdef MISDN_MEMDEBUG
+ err = __mid_init();
+ if (err)
+ return err;
+#endif
mISDN_initstack(&debug);
err = mISDN_inittimer(&debug);
if (err)
@@ -223,6 +228,9 @@
Isdnl2_cleanup();
}
error:
+#ifdef MISDN_MEMDEBUG
+ __mid_cleanup();
+#endif
return err;
}
@@ -238,6 +246,9 @@
if (!list_empty(&Bprotocols))
printk(KERN_ERR "%s Bprotocols still registered\n", __func__);
+#ifdef MISDN_MEMDEBUG
+ __mid_cleanup();
+#endif
printk(KERN_DEBUG "mISDNcore unloaded\n");
}
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/core.h mISDN-memdebug/drivers/isdn/mISDN/core.h
--- mISDN/drivers/isdn/mISDN/core.h 2008-07-15 10:40:05.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/core.h 2008-07-10 12:16:49.000000000 +0200
@@ -15,6 +15,10 @@
#ifndef mISDN_CORE_H
#define mISDN_CORE_H
+#ifdef MISDN_MEMDEBUG
+#include "memdbg.h"
+#endif
+
extern struct mISDNdevice *get_mdevice(u_int);
extern int get_mdevice_count(void);
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/dsp.h mISDN-memdebug/drivers/isdn/mISDN/dsp.h
--- mISDN/drivers/isdn/mISDN/dsp.h 2008-07-15 10:53:19.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/dsp.h 2008-07-10 12:16:49.000000000 +0200
@@ -9,6 +9,10 @@
*
*/
+#ifdef MISDN_MEMDEBUG
+#include "memdbg.h"
+#endif
+
#define DEBUG_DSP_CTRL 0x0001
#define DEBUG_DSP_CORE 0x0002
#define DEBUG_DSP_DTMF 0x0004
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/dsp_core.c mISDN-memdebug/drivers/isdn/mISDN/dsp_core.c
--- mISDN/drivers/isdn/mISDN/dsp_core.c 2008-07-15 10:53:28.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/dsp_core.c 2008-07-15 09:47:25.000000000 +0200
@@ -636,6 +636,10 @@
struct sk_buff *nskb;
u_long flags;
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
+
hh = mISDN_HEAD_P(skb);
switch (hh->prim) {
/* FROM DOWN */
@@ -964,6 +968,9 @@
/* send queued data */
while ((skb = skb_dequeue(&dsp->sendq))) {
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
/* in locked date, we must have still data in queue */
if (dsp->hdlc && dsp->data_pending)
break; /* wait until data has been acknowledged */
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/dtmf.c mISDN-memdebug/drivers/isdn/mISDN/dtmf.c
--- mISDN/drivers/isdn/mISDN/dtmf.c 2008-07-15 10:53:43.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/dtmf.c 2008-07-15 09:47:25.000000000 +0200
@@ -321,6 +321,10 @@
struct dtmf *dtmf = container_of(ch, struct dtmf, ch);
struct mISDNhead *hh;
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
+
hh = mISDN_HEAD_P(skb);
switch (hh->prim) {
case (PH_DATA_IND):
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/hwchannel.c mISDN-memdebug/drivers/isdn/mISDN/hwchannel.c
--- mISDN/drivers/isdn/mISDN/hwchannel.c 2008-07-15 10:40:43.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/hwchannel.c 2008-07-15 09:47:25.000000000 +0200
@@ -17,6 +17,9 @@
#include <linux/module.h>
#include <linux/mISDNhw.h>
+#ifdef MISDN_MEMDEBUG
+#include "memdbg.h"
+#endif
static void
dchannel_bh(struct work_struct *ws)
@@ -27,6 +30,9 @@
if (test_and_clear_bit(FLG_RECVQUEUE, &dch->Flags)) {
while ((skb = skb_dequeue(&dch->rqueue))) {
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
if (likely(dch->dev.D.peer)) {
err = dch->dev.D.recv(dch->dev.D.peer, skb);
if (err)
@@ -54,6 +60,9 @@
printk(KERN_WARNING "B-channel %p receive "
"queue if full, but empties...\n", bch);
bch->rcount--;
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
if (likely(bch->ch.peer)) {
err = bch->ch.recv(bch->ch.peer, skb);
if (err)
@@ -110,6 +119,15 @@
dev_kfree_skb(ch->rx_skb);
ch->rx_skb = NULL;
}
+#ifdef MISDN_MEMDEBUG
+ {
+ struct sk_buff *skb;
+ while ((skb = skb_dequeue(&ch->squeue)))
+ dev_kfree_skb(skb);
+ while ((skb = skb_dequeue(&ch->rqueue)))
+ dev_kfree_skb(skb);
+ }
+#endif
skb_queue_purge(&ch->squeue);
skb_queue_purge(&ch->rqueue);
flush_scheduled_work();
@@ -132,6 +150,13 @@
dev_kfree_skb(ch->next_skb);
ch->next_skb = NULL;
}
+#ifdef MISDN_MEMDEBUG
+ {
+ struct sk_buff *skb;
+ while ((skb = skb_dequeue(&ch->rqueue)))
+ dev_kfree_skb(skb);
+ }
+#endif
skb_queue_purge(&ch->rqueue);
ch->rcount = 0;
flush_scheduled_work();
@@ -177,7 +202,11 @@
hh->prim = PH_DATA_IND;
hh->id = MISDN_ID_ANY;
if (bch->rcount >= 64) {
+#ifdef MISDN_MEMDEBUG
+ __mid_dev_kfree_skb(bch->rx_skb, NULL, 0);
+#else
dev_kfree_skb(bch->rx_skb);
+#endif
bch->rx_skb = NULL;
return;
}
@@ -200,7 +229,11 @@
recv_Bchannel_skb(struct bchannel *bch, struct sk_buff *skb)
{
if (bch->rcount >= 64) {
+#ifdef MISDN_MEMDEBUG
+ __mid_dev_kfree_skb(skb, NULL, 0);
+#else
dev_kfree_skb(skb);
+#endif
return;
}
bch->rcount++;
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/l1oip_core.c mISDN-memdebug/drivers/isdn/mISDN/l1oip_core.c
--- mISDN/drivers/isdn/mISDN/l1oip_core.c 2008-07-15 10:53:59.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/l1oip_core.c 2008-07-15 09:47:25.000000000 +0200
@@ -885,6 +885,10 @@
int l, ll;
unsigned char *p;
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
+
switch (hh->prim) {
case PH_DATA_REQ:
if (skb->len < 1) {
@@ -1093,6 +1097,10 @@
int l, ll, i;
unsigned char *p;
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
+
switch (hh->prim) {
case PH_DATA_REQ:
if (skb->len <= 0) {
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/layer1.c mISDN-memdebug/drivers/isdn/mISDN/layer1.c
--- mISDN/drivers/isdn/mISDN/layer1.c 2008-07-15 10:54:08.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/layer1.c 2008-07-10 12:16:49.000000000 +0200
@@ -20,6 +20,9 @@
#include <linux/mISDNhw.h>
#include "layer1.h"
#include "fsm.h"
+#ifdef MISDN_MEMDEBUG
+#include "memdbg.h"
+#endif
static int *debug;
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/layer2.c mISDN-memdebug/drivers/isdn/mISDN/layer2.c
--- mISDN/drivers/isdn/mISDN/layer2.c 2008-07-15 10:14:59.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/layer2.c 2008-07-15 09:47:25.000000000 +0200
@@ -17,6 +17,9 @@
#include "fsm.h"
#include "layer2.h"
+#ifdef MISDN_MEMDEBUG
+#include "memdbg.h"
+#endif
static int *debug;
@@ -1924,6 +1927,10 @@
struct mISDNhead *hh = mISDN_HEAD_P(skb);
int ret = -EINVAL;
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
+
if (*debug & DEBUG_L2_RECV)
printk(KERN_DEBUG "%s: prim(%x) id(%x) tei(%d)\n",
__func__, hh->prim, hh->id, l2->tei);
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/memdbg.c mISDN-memdebug/drivers/isdn/mISDN/memdbg.c
--- mISDN/drivers/isdn/mISDN/memdbg.c 1970-01-01 01:00:00.000000000 +0100
+++ mISDN-memdebug/drivers/isdn/mISDN/memdbg.c 2008-07-15 09:47:25.000000000 +0200
@@ -0,0 +1,410 @@
+#include <linux/stddef.h>
+#include <linux/list.h>
+#include <linux/vmalloc.h>
+#include <linux/skbuff.h>
+#include <linux/mISDNif.h>
+//#ifdef CONFIG_KMOD
+//#include <linux/kmod.h>
+//#endif
+
+static struct list_head mISDN_memdbg_list = LIST_HEAD_INIT(mISDN_memdbg_list);
+static struct list_head mISDN_skbdbg_list = LIST_HEAD_INIT(mISDN_skbdbg_list);
+static spinlock_t memdbg_lock = SPIN_LOCK_UNLOCKED;
+static spinlock_t skbdbg_lock = SPIN_LOCK_UNLOCKED;
+
+#define MAX_FILE_STRLEN (64 - 3*sizeof(u_int) - sizeof(struct list_head))
+
+#define MID_ITEM_TYP_KMALLOC 1
+#define MID_ITEM_TYP_VMALLOC 2
+
+typedef struct _mid_item {
+ struct list_head head;
+ u_int typ;
+ u_int size;
+ u_int line;
+ char file[MAX_FILE_STRLEN];
+} _mid_item_t;
+
+typedef struct _mid_sitem {
+ struct list_head head;
+ struct sk_buff *skb;
+ unsigned int size;
+ int line;
+ char file[MAX_FILE_STRLEN];
+} _mid_sitem_t;
+
+void *
+__mid_kmalloc(size_t size, int ord, char *fn, int line)
+{
+ _mid_item_t *mid;
+ u_long flags;
+
+ mid = kmalloc(size + sizeof(_mid_item_t), ord);
+ if (mid) {
+ INIT_LIST_HEAD(&mid->head);
+ mid->typ = MID_ITEM_TYP_KMALLOC;
+ mid->size = size;
+ mid->line = line;
+ if (strlen(fn)+1 > MAX_FILE_STRLEN)
+ fn += strlen(fn)+1 - MAX_FILE_STRLEN;
+ strncpy(mid->file, fn, MAX_FILE_STRLEN);
+ mid->file[MAX_FILE_STRLEN-1] = 0;
+ spin_lock_irqsave(&memdbg_lock, flags);
+ list_add_tail(&mid->head, &mISDN_memdbg_list);
+ spin_unlock_irqrestore(&memdbg_lock, flags);
+ return((void *)&mid->file[MAX_FILE_STRLEN]);
+ } else
+ return(NULL);
+}
+
+void *
+__mid_kzalloc(size_t size, int ord, char *fn, int line)
+{
+ _mid_item_t *mid;
+ u_long flags;
+
+ mid = kzalloc(size + sizeof(_mid_item_t), ord);
+ if (mid) {
+ INIT_LIST_HEAD(&mid->head);
+ mid->typ = MID_ITEM_TYP_KMALLOC;
+ mid->size = size;
+ mid->line = line;
+ if (strlen(fn)+1 > MAX_FILE_STRLEN)
+ fn += strlen(fn)+1 - MAX_FILE_STRLEN;
+ strncpy(mid->file, fn, MAX_FILE_STRLEN);
+ mid->file[MAX_FILE_STRLEN-1] = 0;
+ spin_lock_irqsave(&memdbg_lock, flags);
+ list_add_tail(&mid->head, &mISDN_memdbg_list);
+ spin_unlock_irqrestore(&memdbg_lock, flags);
+ return((void *)&mid->file[MAX_FILE_STRLEN]);
+ } else
+ return(NULL);
+}
+
+void
+__mid_kfree(const void *p)
+{
+ _mid_item_t *mid;
+ u_long flags;
+
+ if (!p)
+ return;
+ mid = (_mid_item_t *)((u_char *)p - sizeof(_mid_item_t));
+ spin_lock_irqsave(&memdbg_lock, flags);
+ list_del(&mid->head);
+ spin_unlock_irqrestore(&memdbg_lock, flags);
+ kfree(mid);
+}
+
+void *
+__mid_vmalloc(size_t size, char *fn, int line)
+{
+ _mid_item_t *mid;
+ u_long flags;
+
+ mid = vmalloc(size + sizeof(_mid_item_t));
+ if (mid) {
+ INIT_LIST_HEAD(&mid->head);
+ mid->typ = MID_ITEM_TYP_VMALLOC;
+ mid->size = size;
+ mid->line = line;
+ if (strlen(fn)+1 > MAX_FILE_STRLEN)
+ fn += strlen(fn)+1 - MAX_FILE_STRLEN;
+ strncpy(mid->file, fn, MAX_FILE_STRLEN);
+ mid->file[MAX_FILE_STRLEN-1] = 0;
+ spin_lock_irqsave(&memdbg_lock, flags);
+ list_add_tail(&mid->head, &mISDN_memdbg_list);
+ spin_unlock_irqrestore(&memdbg_lock, flags);
+ return((void *)&mid->file[MAX_FILE_STRLEN]);
+ } else
+ return(NULL);
+}
+
+void
+__mid_vfree(const void *p)
+{
+ _mid_item_t *mid;
+ u_long flags;
+
+ if (!p)
+ return;
+ mid = (_mid_item_t *)((u_char *)p - sizeof(_mid_item_t));
+ spin_lock_irqsave(&memdbg_lock, flags);
+ list_del(&mid->head);
+ spin_unlock_irqrestore(&memdbg_lock, flags);
+ vfree(mid);
+}
+
+static void
+__mid_skb_destructor(struct sk_buff *skb)
+{
+ struct list_head *item;
+ _mid_sitem_t *sid;
+ u_long flags;
+
+ spin_lock_irqsave(&skbdbg_lock, flags);
+ list_for_each(item, &mISDN_skbdbg_list) {
+ sid = (_mid_sitem_t *)item;
+ if (sid->skb == skb) {
+ list_del(&sid->head);
+ spin_unlock_irqrestore(&skbdbg_lock, flags);
+ kfree(sid);
+ return;
+ }
+ }
+ spin_unlock_irqrestore(&skbdbg_lock, flags);
+ printk(KERN_DEBUG "%s: item(%p) not in list\n", __FUNCTION__, skb);
+}
+
+static __inline__ void
+__mid_sitem_setup(struct sk_buff *skb, unsigned int size, char *fn, int line)
+{
+ struct list_head *item, *next;
+ _mid_sitem_t *sid;
+ u_long flags;
+
+ spin_lock_irqsave(&skbdbg_lock, flags);
+ list_for_each_safe(item, next, &mISDN_skbdbg_list) {
+ sid = (_mid_sitem_t *)item;
+ if (sid->skb == skb) {
+ printk(KERN_ERR "%s: skb already seen in sitem list: (sid=%p,fn=%s,line=%d) it did not call the destructor!\n", __func__, sid, sid->file, sid->line);
+ list_del(&sid->head);
+
+ kfree(sid);
+ }
+ }
+ sid = kmalloc(sizeof(_mid_sitem_t), GFP_ATOMIC);
+ if (!sid) {
+ printk(KERN_DEBUG "%s: no memory for sitem skb %p %s:%d\n",
+ __FUNCTION__, skb, fn, line);
+ spin_unlock_irqrestore(&skbdbg_lock, flags);
+ return;
+ }
+ INIT_LIST_HEAD(&sid->head);
+ sid->skb = skb;
+ sid->size = size;
+ sid->line = line;
+ if (strlen(fn)+1 > MAX_FILE_STRLEN)
+ fn += strlen(fn)+1 - MAX_FILE_STRLEN;
+ strncpy(sid->file, fn, MAX_FILE_STRLEN);
+ sid->file[MAX_FILE_STRLEN-1] = 0;
+ skb->destructor = __mid_skb_destructor;
+ list_add_tail(&sid->head, &mISDN_skbdbg_list);
+ spin_unlock_irqrestore(&skbdbg_lock, flags);
+}
+
+void
+__mid_sitem_update(struct sk_buff *skb, char *fn, int line)
+{
+ struct list_head *item;
+ _mid_sitem_t *sid;
+ u_long flags;
+ _mid_sitem_t *found = NULL;
+
+ if (!skb) {
+ printk(KERN_DEBUG "%s:%d item is NULL\n", fn, line);
+ return;
+ }
+ if (!skb->destructor) {
+ printk(KERN_DEBUG "%s:%d item has no destructor!\n", fn, line);
+ return;
+ }
+#warning remove
+//if (fn)
+//printk(KERN_ERR "before lock (%s:%d)\n", fn, line);
+ spin_lock_irqsave(&skbdbg_lock, flags);
+ list_for_each(item, &mISDN_skbdbg_list) {
+ sid = (_mid_sitem_t *)item;
+ if (sid->skb == skb) {
+ if (found)
+ printk(KERN_ERR "%s: skb already seen in sitem list: (was:sid=%p,fn=%s,line=%d now:sid=%p,fn=%s,line=%d)\n", __func__, found, found->file, found->line, sid, sid->file, sid->line);
+ found = sid;
+ if (fn) {
+ sid->line = line;
+ if (strlen(fn)+1 > MAX_FILE_STRLEN)
+ fn += strlen(fn)+1 - MAX_FILE_STRLEN;
+ strncpy(sid->file, fn, MAX_FILE_STRLEN);
+ } else {
+ sid->line = 0;
+ strcpy(sid->file, "(no info)");
+ }
+ sid->file[MAX_FILE_STRLEN-1] = 0;
+ }
+ }
+ spin_unlock_irqrestore(&skbdbg_lock, flags);
+#warning remove
+//if (fn)
+//printk(KERN_ERR "after unlock\n");
+ if (!found)
+ printk(KERN_DEBUG "%s:%d item(%p) not in list\n", fn, line, skb);
+}
+
+struct sk_buff *
+__mid_alloc_skb(unsigned int size, int gfp_mask, char *fn, int line)
+{
+ struct sk_buff *skb = alloc_skb(size, gfp_mask);
+ u_long flags;
+
+ if (!skb) {
+ printk(KERN_ERR "No Memory, locking forever! (%s:%d)\n", fn, line);
+ spin_lock_irqsave(&skbdbg_lock, flags);
+ while (1) ;
+ }
+ __mid_sitem_setup(skb, size, fn, line);
+ return(skb);
+}
+
+struct sk_buff *
+__mid_dev_alloc_skb(unsigned int size, char *fn, int line)
+{
+ struct sk_buff *skb = dev_alloc_skb(size);
+ u_long flags;
+
+ if (!skb) {
+ printk(KERN_ERR "No Memory, locking forever! (%s:%d)\n", fn, line);
+ spin_lock_irqsave(&skbdbg_lock, flags);
+ while (1) ;
+ }
+ __mid_sitem_setup(skb, size, fn, line);
+ return(skb);
+}
+
+void
+__mid_kfree_skb(struct sk_buff *skb, char *fn, int line)
+{
+ if (skb->destructor)
+ __mid_sitem_update(skb, fn, line);
+ else
+ __mid_sitem_update(skb, fn, line);
+ if (skb->destructor)
+ skb->destructor(skb);
+ skb->destructor = NULL;
+ kfree_skb(skb);
+}
+
+void
+__mid_dev_kfree_skb(struct sk_buff *skb, char *fn, int line)
+{
+ if (skb->destructor)
+ __mid_sitem_update(skb, fn, line);
+ else
+ __mid_sitem_update(skb, fn, line);
+ if (skb->destructor)
+ skb->destructor(skb);
+ skb->destructor = NULL;
+ dev_kfree_skb(skb);
+}
+
+struct sk_buff
+*__mid_skb_clone(struct sk_buff *skb, int gfp_mask, char *fn, int line)
+{
+ struct sk_buff *nskb = skb_clone(skb, gfp_mask);
+ u_long flags;
+
+ if (!nskb) {
+ printk(KERN_ERR "No Memory, locking forever! (%s:%d)\n", fn, line);
+ spin_lock_irqsave(&skbdbg_lock, flags);
+ while (1) ;
+ }
+ __mid_sitem_setup(nskb, (nskb->end - nskb->head), fn, line);
+ return(nskb);
+}
+
+struct sk_buff
+*__mid_skb_copy(struct sk_buff *skb, int gfp_mask, char *fn, int line)
+{
+ struct sk_buff *nskb = skb_copy(skb, gfp_mask);
+ u_long flags;
+
+ if (!nskb) {
+ printk(KERN_ERR "No Memory, locking forever! (%s:%d)\n", fn, line);
+ spin_lock_irqsave(&skbdbg_lock, flags);
+ while (1) ;
+ }
+ __mid_sitem_setup(nskb, (nskb->end - nskb->head), fn, line);
+ return(nskb);
+}
+
+struct sk_buff
+*__mid_skb_realloc_headroom(struct sk_buff *skb, unsigned int headroom, char *fn, int line)
+{
+ struct sk_buff *nskb = skb_realloc_headroom(skb, headroom);
+
+ if (!nskb || (nskb == skb))
+ return(nskb);
+ __mid_sitem_setup(nskb, (nskb->end - nskb->head), fn, line);
+ return(nskb);
+}
+
+void
+__mid_cleanup(void)
+{
+ struct list_head *item, *next;
+ _mid_item_t *mid;
+ _mid_sitem_t *sid;
+ struct mISDNhead *hh;
+ int n = 0;
+ u_long flags;
+
+ spin_lock_irqsave(&memdbg_lock, flags);
+ list_for_each_safe(item, next, &mISDN_memdbg_list) {
+ mid = (_mid_item_t *)item;
+ switch(mid->typ) {
+ case MID_ITEM_TYP_KMALLOC:
+ printk(KERN_ERR "not freed kmalloc size(%d) from %s:%d\n",
+ mid->size, mid->file, mid->line);
+ kfree(mid);
+ break;
+ case MID_ITEM_TYP_VMALLOC:
+ printk(KERN_ERR "not freed vmalloc size(%d) from %s:%d\n",
+ mid->size, mid->file, mid->line);
+ vfree(mid);
+ break;
+ default:
+ printk(KERN_ERR "unknown mid->typ(%d) size(%d) from %s:%d\n",
+ mid->typ, mid->size, mid->file, mid->line);
+ break;
+ }
+ n++;
+ }
+ spin_unlock_irqrestore(&memdbg_lock, flags);
+ printk(KERN_DEBUG "%s: %d kmalloc item(s) freed\n", __FUNCTION__, n);
+ n = 0;
+ spin_lock_irqsave(&skbdbg_lock, flags);
+ list_for_each_safe(item, next, &mISDN_skbdbg_list) {
+ sid = (_mid_sitem_t *)item;
+ hh = mISDN_HEAD_P(sid->skb);
+ printk(KERN_ERR "not freed skb(%p) size(%d) prim(%x) dinfo(%x) allocated at %s:%d\n",
+ sid->skb, sid->size, hh->prim, hh->id, sid->file, sid->line);
+ /*maybe the skb is still aktiv */
+ sid->skb->destructor = NULL;
+ list_del(&sid->head);
+ kfree(sid);
+ n++;
+ }
+ spin_unlock_irqrestore(&skbdbg_lock, flags);
+ printk(KERN_DEBUG "%s: %d sk_buff item(s) freed\n", __FUNCTION__, n);
+}
+
+int
+__mid_init(void)
+{
+ return(0);
+}
+
+#ifdef MODULE
+EXPORT_SYMBOL(__mid_kmalloc);
+EXPORT_SYMBOL(__mid_kzalloc);
+EXPORT_SYMBOL(__mid_kfree);
+EXPORT_SYMBOL(__mid_vmalloc);
+EXPORT_SYMBOL(__mid_vfree);
+EXPORT_SYMBOL(__mid_alloc_skb);
+EXPORT_SYMBOL(__mid_dev_alloc_skb);
+EXPORT_SYMBOL(__mid_sitem_update);
+EXPORT_SYMBOL(__mid_kfree_skb);
+EXPORT_SYMBOL(__mid_dev_kfree_skb);
+EXPORT_SYMBOL(__mid_skb_clone);
+EXPORT_SYMBOL(__mid_skb_copy);
+EXPORT_SYMBOL(__mid_skb_realloc_headroom);
+#endif
+
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/memdbg.h mISDN-memdebug/drivers/isdn/mISDN/memdbg.h
--- mISDN/drivers/isdn/mISDN/memdbg.h 1970-01-01 01:00:00.000000000 +0100
+++ mISDN-memdebug/drivers/isdn/mISDN/memdbg.h 2008-07-15 09:47:25.000000000 +0200
@@ -0,0 +1,53 @@
+#ifndef MEMDBG_H
+#define MEMDBG_H
+
+#ifdef MISDN_MEMDEBUG
+/*#warning THIS WARNING MUST SHOW UP IN ALL MISDN SOURCES*/
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+
+#undef kmalloc
+#undef kzalloc
+#undef kfree
+#undef vmalloc
+#undef vfree
+#undef alloc_skb
+#undef dev_alloc_skb
+#undef kfree_skb
+#undef dev_kfree_skb
+#undef skb_clone
+#undef skb_copy
+#undef skb_realloc_headroom
+
+#define kmalloc(a, b) __mid_kmalloc(a, b, __FILE__, __LINE__)
+#define kzalloc(a, b) __mid_kzalloc(a, b, __FILE__, __LINE__)
+#define kfree(a) __mid_kfree(a)
+#define vmalloc(s) __mid_vmalloc(s, __FILE__, __LINE__)
+#define vfree(p) __mid_vfree(p)
+#define alloc_skb(a, b) __mid_alloc_skb(a, b, __FILE__, __LINE__)
+#define dev_alloc_skb(a) __mid_dev_alloc_skb(a, __FILE__, __LINE__)
+#define mid_sitem_update(a) __mid_sitem_update(a, __FILE__, __LINE__)
+#define kfree_skb(a) __mid_kfree_skb(a, __FILE__, __LINE__)
+#define dev_kfree_skb(a) __mid_dev_kfree_skb(a, __FILE__, __LINE__)
+#define skb_clone(a, b) __mid_skb_clone(a, b, __FILE__, __LINE__)
+#define skb_copy(a, b) __mid_skb_copy(a, b, __FILE__, __LINE__)
+#define skb_realloc_headroom(a, b) __mid_skb_realloc_headroom(a, b, __FILE__, __LINE__)
+
+extern void *__mid_kmalloc(size_t, int, char *, int);
+extern void *__mid_kzalloc(size_t, int, char *, int);
+extern void __mid_kfree(const void *);
+extern void *__mid_vmalloc(size_t, char *, int);
+extern void __mid_vfree(const void *);
+extern void __mid_cleanup(void);
+extern int __mid_init(void);
+extern struct sk_buff *__mid_alloc_skb(unsigned int,int, char *, int);
+extern struct sk_buff *__mid_dev_alloc_skb(unsigned int,char *, int);
+extern void __mid_sitem_update(struct sk_buff *, char *, int);
+extern void __mid_kfree_skb(struct sk_buff *, char *, int);
+extern void __mid_dev_kfree_skb(struct sk_buff *, char *, int);
+extern struct sk_buff *__mid_skb_clone(struct sk_buff *, int, char *, int);
+extern struct sk_buff *__mid_skb_copy(struct sk_buff *, int, char *, int);
+extern struct sk_buff *__mid_skb_realloc_headroom(struct sk_buff *, unsigned int, char *, int);
+#endif
+
+#endif
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/oslec.h mISDN-memdebug/drivers/isdn/mISDN/oslec.h
--- mISDN/drivers/isdn/mISDN/oslec.h 2008-07-15 10:54:20.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/oslec.h 2008-07-10 12:16:49.000000000 +0200
@@ -28,6 +28,10 @@
#ifndef __OSLEC__
#define __OSLEC__
+#ifdef MISDN_MEMDEBUG
+#include "memdbg.h"
+#endif
+
#define EC_TYPE "OSLEC"
struct echo_can_state {
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/socket.c mISDN-memdebug/drivers/isdn/mISDN/socket.c
--- mISDN/drivers/isdn/mISDN/socket.c 2008-07-15 10:54:28.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/socket.c 2008-07-15 09:47:25.000000000 +0200
@@ -70,12 +70,23 @@
struct mISDN_sock *msk;
int err;
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
msk = container_of(ch, struct mISDN_sock, ch);
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s len %d %p\n", __func__, skb->len, skb);
if (msk->sk.sk_state == MISDN_CLOSED)
return -EUNATCH;
__net_timestamp(skb);
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+ /* removing from list, because it is not done by ..rcv_skb */
+ if (skb->destructor) {
+ skb->destructor(skb);
+ skb->destructor = NULL;
+ }
+#endif
err = sock_queue_rcv_skb(&msk->sk, skb);
if (err)
printk(KERN_WARNING "%s: error %d\n", __func__, err);
@@ -229,6 +240,9 @@
printk(KERN_DEBUG "%s: ID:%x\n",
__func__, mISDN_HEAD_ID(skb));
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
err = -ENODEV;
if (!_pms(sk)->ch.peer ||
(err = _pms(sk)->ch.recv(_pms(sk)->ch.peer, skb)))
diff -Nur -x '*symvers' -x '*mod.c' -x '*.o' -x '*.ko' mISDN/drivers/isdn/mISDN/stack.c mISDN-memdebug/drivers/isdn/mISDN/stack.c
--- mISDN/drivers/isdn/mISDN/stack.c 2008-07-15 10:14:08.000000000 +0200
+++ mISDN-memdebug/drivers/isdn/mISDN/stack.c 2008-07-15 09:47:25.000000000 +0200
@@ -38,6 +38,10 @@
int
mISDN_queue_message(struct mISDNchannel *ch, struct sk_buff *skb)
{
+#ifdef MISDN_MEMDEBUG
+ mid_sitem_update(skb);
+#endif
+