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| author | Randy Dunlap <rdunlap@xenotime.net> | 2006-06-27 02:53:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-27 17:32:38 -0700 |
| commit | a7807a32bbb027ab9955b96734fdc7f1e6497a9f (patch) | |
| tree | 8ed62e305638e1b853f1c80b5bb7ed818418765c | |
| parent | b3c681e09193559ba15f6c9562bd37045f120a96 (diff) | |
| download | linux-a7807a32bbb027ab9955b96734fdc7f1e6497a9f.tar.bz2 | |
[PATCH] poison: add & use more constants
Add more poison values to include/linux/poison.h. It's not clear to me
whether some others should be added or not, so I haven't added any of
these:
./include/linux/libata.h:#define ATA_TAG_POISON 0xfafbfcfdU
./arch/ppc/8260_io/fcc_enet.c:1918: memset((char *)(&(immap->im_dprambase[(mem_addr+64)])), 0x88, 32);
./drivers/usb/mon/mon_text.c:429: memset(mem, 0xe5, sizeof(struct mon_event_text));
./drivers/char/ftape/lowlevel/ftape-ctl.c:738: memset(ft_buffer[i]->address, 0xAA, FT_BUFF_SIZE);
./drivers/block/sx8.c:/* 0xf is just arbitrary, non-zero noise; this is sorta like poisoning */
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | include/linux/poison.h | 7 | ||||
| -rw-r--r-- | kernel/mutex-debug.c | 5 | ||||
| -rw-r--r-- | security/keys/key.c | 3 |
3 files changed, 12 insertions, 3 deletions
diff --git a/include/linux/poison.h b/include/linux/poison.h index 4109f37b7b66..a5347c02432e 100644 --- a/include/linux/poison.h +++ b/include/linux/poison.h @@ -45,6 +45,13 @@ /********** drivers/atm/ **********/ #define ATM_POISON_FREE 0x12 +/********** kernel/mutexes **********/ +#define MUTEX_DEBUG_INIT 0x11 +#define MUTEX_DEBUG_FREE 0x22 + +/********** security/ **********/ +#define KEY_DESTROY 0xbd + /********** sound/oss/ **********/ #define OSS_POISON_FREE 0xAB diff --git a/kernel/mutex-debug.c b/kernel/mutex-debug.c index 036b6285b15c..e38e4bac97ca 100644 --- a/kernel/mutex-debug.c +++ b/kernel/mutex-debug.c @@ -16,6 +16,7 @@ #include <linux/sched.h> #include <linux/delay.h> #include <linux/module.h> +#include <linux/poison.h> #include <linux/spinlock.h> #include <linux/kallsyms.h> #include <linux/interrupt.h> @@ -381,7 +382,7 @@ void debug_mutex_set_owner(struct mutex *lock, void debug_mutex_init_waiter(struct mutex_waiter *waiter) { - memset(waiter, 0x11, sizeof(*waiter)); + memset(waiter, MUTEX_DEBUG_INIT, sizeof(*waiter)); waiter->magic = waiter; INIT_LIST_HEAD(&waiter->list); } @@ -397,7 +398,7 @@ void debug_mutex_wake_waiter(struct mutex *lock, struct mutex_waiter *waiter) void debug_mutex_free_waiter(struct mutex_waiter *waiter) { DEBUG_WARN_ON(!list_empty(&waiter->list)); - memset(waiter, 0x22, sizeof(*waiter)); + memset(waiter, MUTEX_DEBUG_FREE, sizeof(*waiter)); } void debug_mutex_add_waiter(struct mutex *lock, struct mutex_waiter *waiter, diff --git a/security/keys/key.c b/security/keys/key.c index 43295ca37b5d..80de8c3e9cc3 100644 --- a/security/keys/key.c +++ b/security/keys/key.c @@ -11,6 +11,7 @@ #include <linux/module.h> #include <linux/init.h> +#include <linux/poison.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/security.h> @@ -988,7 +989,7 @@ void unregister_key_type(struct key_type *ktype) if (key->type == ktype) { if (ktype->destroy) ktype->destroy(key); - memset(&key->payload, 0xbd, sizeof(key->payload)); + memset(&key->payload, KEY_DESTROY, sizeof(key->payload)); } } |