mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 16:29:59 +00:00
![Christoph Lameter](/assets/img/avatar_default.png)
debugobjects warning during netfilter exit: ------------[ cut here ]------------ WARNING: CPU: 6 PID: 4178 at lib/debugobjects.c:260 debug_print_object+0x8d/0xb0() ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x20 Modules linked in: CPU: 6 PID: 4178 Comm: kworker/u16:2 Tainted: G W 3.11.0-next-20130906-sasha #3984 Workqueue: netns cleanup_net Call Trace: dump_stack+0x52/0x87 warn_slowpath_common+0x8c/0xc0 warn_slowpath_fmt+0x46/0x50 debug_print_object+0x8d/0xb0 __debug_check_no_obj_freed+0xa5/0x220 debug_check_no_obj_freed+0x15/0x20 kmem_cache_free+0x197/0x340 kmem_cache_destroy+0x86/0xe0 nf_conntrack_cleanup_net_list+0x131/0x170 nf_conntrack_pernet_exit+0x5d/0x70 ops_exit_list+0x5e/0x70 cleanup_net+0xfb/0x1c0 process_one_work+0x338/0x550 worker_thread+0x215/0x350 kthread+0xe7/0xf0 ret_from_fork+0x7c/0xb0 Also during dcookie cleanup: WARNING: CPU: 12 PID: 9725 at lib/debugobjects.c:260 debug_print_object+0x8c/0xb0() ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x20 Modules linked in: CPU: 12 PID: 9725 Comm: trinity-c141 Not tainted 3.15.0-rc2-next-20140423-sasha-00018-gc4ff6c4 #408 Call Trace: dump_stack (lib/dump_stack.c:52) warn_slowpath_common (kernel/panic.c:430) warn_slowpath_fmt (kernel/panic.c:445) debug_print_object (lib/debugobjects.c:262) __debug_check_no_obj_freed (lib/debugobjects.c:697) debug_check_no_obj_freed (lib/debugobjects.c:726) kmem_cache_free (mm/slub.c:2689 mm/slub.c:2717) kmem_cache_destroy (mm/slab_common.c:363) dcookie_unregister (fs/dcookies.c:302 fs/dcookies.c:343) event_buffer_release (arch/x86/oprofile/../../../drivers/oprofile/event_buffer.c:153) __fput (fs/file_table.c:217) ____fput (fs/file_table.c:253) task_work_run (kernel/task_work.c:125 (discriminator 1)) do_notify_resume (include/linux/tracehook.h:196 arch/x86/kernel/signal.c:751) int_signal (arch/x86/kernel/entry_64.S:807) Sysfs has a release mechanism. Use that to release the kmem_cache structure if CONFIG_SYSFS is enabled. Only slub is changed - slab currently only supports /proc/slabinfo and not /sys/kernel/slab/*. We talked about adding that and someone was working on it. [akpm@linux-foundation.org: fix CONFIG_SYSFS=n build] [akpm@linux-foundation.org: fix CONFIG_SYSFS=n build even more] Signed-off-by: Christoph Lameter <cl@linux.com> Reported-by: Sasha Levin <sasha.levin@oracle.com> Tested-by: Sasha Levin <sasha.levin@oracle.com> Acked-by: Greg KH <greg@kroah.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Pekka Enberg <penberg@kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
113 lines
3.8 KiB
C
113 lines
3.8 KiB
C
#ifndef _LINUX_SLUB_DEF_H
|
|
#define _LINUX_SLUB_DEF_H
|
|
|
|
/*
|
|
* SLUB : A Slab allocator without object queues.
|
|
*
|
|
* (C) 2007 SGI, Christoph Lameter
|
|
*/
|
|
#include <linux/kobject.h>
|
|
|
|
enum stat_item {
|
|
ALLOC_FASTPATH, /* Allocation from cpu slab */
|
|
ALLOC_SLOWPATH, /* Allocation by getting a new cpu slab */
|
|
FREE_FASTPATH, /* Free to cpu slab */
|
|
FREE_SLOWPATH, /* Freeing not to cpu slab */
|
|
FREE_FROZEN, /* Freeing to frozen slab */
|
|
FREE_ADD_PARTIAL, /* Freeing moves slab to partial list */
|
|
FREE_REMOVE_PARTIAL, /* Freeing removes last object */
|
|
ALLOC_FROM_PARTIAL, /* Cpu slab acquired from node partial list */
|
|
ALLOC_SLAB, /* Cpu slab acquired from page allocator */
|
|
ALLOC_REFILL, /* Refill cpu slab from slab freelist */
|
|
ALLOC_NODE_MISMATCH, /* Switching cpu slab */
|
|
FREE_SLAB, /* Slab freed to the page allocator */
|
|
CPUSLAB_FLUSH, /* Abandoning of the cpu slab */
|
|
DEACTIVATE_FULL, /* Cpu slab was full when deactivated */
|
|
DEACTIVATE_EMPTY, /* Cpu slab was empty when deactivated */
|
|
DEACTIVATE_TO_HEAD, /* Cpu slab was moved to the head of partials */
|
|
DEACTIVATE_TO_TAIL, /* Cpu slab was moved to the tail of partials */
|
|
DEACTIVATE_REMOTE_FREES,/* Slab contained remotely freed objects */
|
|
DEACTIVATE_BYPASS, /* Implicit deactivation */
|
|
ORDER_FALLBACK, /* Number of times fallback was necessary */
|
|
CMPXCHG_DOUBLE_CPU_FAIL,/* Failure of this_cpu_cmpxchg_double */
|
|
CMPXCHG_DOUBLE_FAIL, /* Number of times that cmpxchg double did not match */
|
|
CPU_PARTIAL_ALLOC, /* Used cpu partial on alloc */
|
|
CPU_PARTIAL_FREE, /* Refill cpu partial on free */
|
|
CPU_PARTIAL_NODE, /* Refill cpu partial from node partial */
|
|
CPU_PARTIAL_DRAIN, /* Drain cpu partial to node partial */
|
|
NR_SLUB_STAT_ITEMS };
|
|
|
|
struct kmem_cache_cpu {
|
|
void **freelist; /* Pointer to next available object */
|
|
unsigned long tid; /* Globally unique transaction id */
|
|
struct page *page; /* The slab from which we are allocating */
|
|
struct page *partial; /* Partially allocated frozen slabs */
|
|
#ifdef CONFIG_SLUB_STATS
|
|
unsigned stat[NR_SLUB_STAT_ITEMS];
|
|
#endif
|
|
};
|
|
|
|
/*
|
|
* Word size structure that can be atomically updated or read and that
|
|
* contains both the order and the number of objects that a slab of the
|
|
* given order would contain.
|
|
*/
|
|
struct kmem_cache_order_objects {
|
|
unsigned long x;
|
|
};
|
|
|
|
/*
|
|
* Slab cache management.
|
|
*/
|
|
struct kmem_cache {
|
|
struct kmem_cache_cpu __percpu *cpu_slab;
|
|
/* Used for retriving partial slabs etc */
|
|
unsigned long flags;
|
|
unsigned long min_partial;
|
|
int size; /* The size of an object including meta data */
|
|
int object_size; /* The size of an object without meta data */
|
|
int offset; /* Free pointer offset. */
|
|
int cpu_partial; /* Number of per cpu partial objects to keep around */
|
|
struct kmem_cache_order_objects oo;
|
|
|
|
/* Allocation and freeing of slabs */
|
|
struct kmem_cache_order_objects max;
|
|
struct kmem_cache_order_objects min;
|
|
gfp_t allocflags; /* gfp flags to use on each alloc */
|
|
int refcount; /* Refcount for slab cache destroy */
|
|
void (*ctor)(void *);
|
|
int inuse; /* Offset to metadata */
|
|
int align; /* Alignment */
|
|
int reserved; /* Reserved bytes at the end of slabs */
|
|
const char *name; /* Name (only for display!) */
|
|
struct list_head list; /* List of slab caches */
|
|
#ifdef CONFIG_SYSFS
|
|
struct kobject kobj; /* For sysfs */
|
|
#endif
|
|
#ifdef CONFIG_MEMCG_KMEM
|
|
struct memcg_cache_params *memcg_params;
|
|
int max_attr_size; /* for propagation, maximum size of a stored attr */
|
|
#ifdef CONFIG_SYSFS
|
|
struct kset *memcg_kset;
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef CONFIG_NUMA
|
|
/*
|
|
* Defragmentation by allocating from a remote node.
|
|
*/
|
|
int remote_node_defrag_ratio;
|
|
#endif
|
|
struct kmem_cache_node *node[MAX_NUMNODES];
|
|
};
|
|
|
|
#ifdef CONFIG_SYSFS
|
|
#define SLAB_SUPPORTS_SYSFS
|
|
void sysfs_slab_remove(struct kmem_cache *);
|
|
#else
|
|
static inline void sysfs_slab_remove(struct kmem_cache *s)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif /* _LINUX_SLUB_DEF_H */
|