kprobes: Allow probe on some kprobe functions
There is no need to prohibit probing on the functions used for preparation, registeration, optimization, controll etc. Those are safely probed because those are not invoked from breakpoint/fault/debug handlers, there is no chance to cause recursive exceptions. Following functions are now removed from the kprobes blacklist: add_new_kprobe aggr_kprobe_disabled alloc_aggr_kprobe alloc_aggr_kprobe arm_all_kprobes __arm_kprobe arm_kprobe arm_kprobe_ftrace check_kprobe_address_safe collect_garbage_slots collect_garbage_slots collect_one_slot debugfs_kprobe_init __disable_kprobe disable_kprobe disarm_all_kprobes __disarm_kprobe disarm_kprobe disarm_kprobe_ftrace do_free_cleaned_kprobes do_optimize_kprobes do_unoptimize_kprobes enable_kprobe force_unoptimize_kprobe free_aggr_kprobe free_aggr_kprobe __free_insn_slot __get_insn_slot get_optimized_kprobe __get_valid_kprobe init_aggr_kprobe init_aggr_kprobe in_nokprobe_functions kick_kprobe_optimizer kill_kprobe kill_optimized_kprobe kprobe_addr kprobe_optimizer kprobe_queued kprobe_seq_next kprobe_seq_start kprobe_seq_stop kprobes_module_callback kprobes_open optimize_all_kprobes optimize_kprobe prepare_kprobe prepare_optimized_kprobe register_aggr_kprobe register_jprobe register_jprobes register_kprobe register_kprobes register_kretprobe register_kretprobe register_kretprobes register_kretprobes report_probe show_kprobe_addr try_to_optimize_kprobe unoptimize_all_kprobes unoptimize_kprobe unregister_jprobe unregister_jprobes unregister_kprobe __unregister_kprobe_bottom unregister_kprobes __unregister_kprobe_top unregister_kretprobe unregister_kretprobe unregister_kretprobes unregister_kretprobes wait_for_kprobe_optimizer I tested those functions by putting kprobes on all instructions in the functions with the bash script I sent to LKML. See: https://lkml.org/lkml/2014/3/27/33 Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Link: http://lkml.kernel.org/r/20140417081753.26341.57889.stgit@ltc230.yrl.intra.hitachi.co.jp Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: fche@redhat.com Cc: systemtap@sourceware.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Masami Hiramatsu
Ingo Molnar
parent
7ec8a97a99
commit
55479f6475
153
kernel/kprobes.c
153
kernel/kprobes.c
|
|
@ -138,13 +138,13 @@ struct kprobe_insn_cache kprobe_insn_slots = {
|
|||
.insn_size = MAX_INSN_SIZE,
|
||||
.nr_garbage = 0,
|
||||
};
|
||||
static int __kprobes collect_garbage_slots(struct kprobe_insn_cache *c);
|
||||
static int collect_garbage_slots(struct kprobe_insn_cache *c);
|
||||
|
||||
/**
|
||||
* __get_insn_slot() - Find a slot on an executable page for an instruction.
|
||||
* We allocate an executable page if there's no room on existing ones.
|
||||
*/
|
||||
kprobe_opcode_t __kprobes *__get_insn_slot(struct kprobe_insn_cache *c)
|
||||
kprobe_opcode_t *__get_insn_slot(struct kprobe_insn_cache *c)
|
||||
{
|
||||
struct kprobe_insn_page *kip;
|
||||
kprobe_opcode_t *slot = NULL;
|
||||
|
|
@ -201,7 +201,7 @@ out:
|
|||
}
|
||||
|
||||
/* Return 1 if all garbages are collected, otherwise 0. */
|
||||
static int __kprobes collect_one_slot(struct kprobe_insn_page *kip, int idx)
|
||||
static int collect_one_slot(struct kprobe_insn_page *kip, int idx)
|
||||
{
|
||||
kip->slot_used[idx] = SLOT_CLEAN;
|
||||
kip->nused--;
|
||||
|
|
@ -222,7 +222,7 @@ static int __kprobes collect_one_slot(struct kprobe_insn_page *kip, int idx)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int __kprobes collect_garbage_slots(struct kprobe_insn_cache *c)
|
||||
static int collect_garbage_slots(struct kprobe_insn_cache *c)
|
||||
{
|
||||
struct kprobe_insn_page *kip, *next;
|
||||
|
||||
|
|
@ -244,8 +244,8 @@ static int __kprobes collect_garbage_slots(struct kprobe_insn_cache *c)
|
|||
return 0;
|
||||
}
|
||||
|
||||
void __kprobes __free_insn_slot(struct kprobe_insn_cache *c,
|
||||
kprobe_opcode_t *slot, int dirty)
|
||||
void __free_insn_slot(struct kprobe_insn_cache *c,
|
||||
kprobe_opcode_t *slot, int dirty)
|
||||
{
|
||||
struct kprobe_insn_page *kip;
|
||||
|
||||
|
|
@ -361,7 +361,7 @@ void __kprobes opt_pre_handler(struct kprobe *p, struct pt_regs *regs)
|
|||
}
|
||||
|
||||
/* Free optimized instructions and optimized_kprobe */
|
||||
static __kprobes void free_aggr_kprobe(struct kprobe *p)
|
||||
static void free_aggr_kprobe(struct kprobe *p)
|
||||
{
|
||||
struct optimized_kprobe *op;
|
||||
|
||||
|
|
@ -399,7 +399,7 @@ static inline int kprobe_disarmed(struct kprobe *p)
|
|||
}
|
||||
|
||||
/* Return true(!0) if the probe is queued on (un)optimizing lists */
|
||||
static int __kprobes kprobe_queued(struct kprobe *p)
|
||||
static int kprobe_queued(struct kprobe *p)
|
||||
{
|
||||
struct optimized_kprobe *op;
|
||||
|
||||
|
|
@ -415,7 +415,7 @@ static int __kprobes kprobe_queued(struct kprobe *p)
|
|||
* Return an optimized kprobe whose optimizing code replaces
|
||||
* instructions including addr (exclude breakpoint).
|
||||
*/
|
||||
static struct kprobe *__kprobes get_optimized_kprobe(unsigned long addr)
|
||||
static struct kprobe *get_optimized_kprobe(unsigned long addr)
|
||||
{
|
||||
int i;
|
||||
struct kprobe *p = NULL;
|
||||
|
|
@ -447,7 +447,7 @@ static DECLARE_DELAYED_WORK(optimizing_work, kprobe_optimizer);
|
|||
* Optimize (replace a breakpoint with a jump) kprobes listed on
|
||||
* optimizing_list.
|
||||
*/
|
||||
static __kprobes void do_optimize_kprobes(void)
|
||||
static void do_optimize_kprobes(void)
|
||||
{
|
||||
/* Optimization never be done when disarmed */
|
||||
if (kprobes_all_disarmed || !kprobes_allow_optimization ||
|
||||
|
|
@ -475,7 +475,7 @@ static __kprobes void do_optimize_kprobes(void)
|
|||
* Unoptimize (replace a jump with a breakpoint and remove the breakpoint
|
||||
* if need) kprobes listed on unoptimizing_list.
|
||||
*/
|
||||
static __kprobes void do_unoptimize_kprobes(void)
|
||||
static void do_unoptimize_kprobes(void)
|
||||
{
|
||||
struct optimized_kprobe *op, *tmp;
|
||||
|
||||
|
|
@ -507,7 +507,7 @@ static __kprobes void do_unoptimize_kprobes(void)
|
|||
}
|
||||
|
||||
/* Reclaim all kprobes on the free_list */
|
||||
static __kprobes void do_free_cleaned_kprobes(void)
|
||||
static void do_free_cleaned_kprobes(void)
|
||||
{
|
||||
struct optimized_kprobe *op, *tmp;
|
||||
|
||||
|
|
@ -519,13 +519,13 @@ static __kprobes void do_free_cleaned_kprobes(void)
|
|||
}
|
||||
|
||||
/* Start optimizer after OPTIMIZE_DELAY passed */
|
||||
static __kprobes void kick_kprobe_optimizer(void)
|
||||
static void kick_kprobe_optimizer(void)
|
||||
{
|
||||
schedule_delayed_work(&optimizing_work, OPTIMIZE_DELAY);
|
||||
}
|
||||
|
||||
/* Kprobe jump optimizer */
|
||||
static __kprobes void kprobe_optimizer(struct work_struct *work)
|
||||
static void kprobe_optimizer(struct work_struct *work)
|
||||
{
|
||||
mutex_lock(&kprobe_mutex);
|
||||
/* Lock modules while optimizing kprobes */
|
||||
|
|
@ -561,7 +561,7 @@ static __kprobes void kprobe_optimizer(struct work_struct *work)
|
|||
}
|
||||
|
||||
/* Wait for completing optimization and unoptimization */
|
||||
static __kprobes void wait_for_kprobe_optimizer(void)
|
||||
static void wait_for_kprobe_optimizer(void)
|
||||
{
|
||||
mutex_lock(&kprobe_mutex);
|
||||
|
||||
|
|
@ -580,7 +580,7 @@ static __kprobes void wait_for_kprobe_optimizer(void)
|
|||
}
|
||||
|
||||
/* Optimize kprobe if p is ready to be optimized */
|
||||
static __kprobes void optimize_kprobe(struct kprobe *p)
|
||||
static void optimize_kprobe(struct kprobe *p)
|
||||
{
|
||||
struct optimized_kprobe *op;
|
||||
|
||||
|
|
@ -614,7 +614,7 @@ static __kprobes void optimize_kprobe(struct kprobe *p)
|
|||
}
|
||||
|
||||
/* Short cut to direct unoptimizing */
|
||||
static __kprobes void force_unoptimize_kprobe(struct optimized_kprobe *op)
|
||||
static void force_unoptimize_kprobe(struct optimized_kprobe *op)
|
||||
{
|
||||
get_online_cpus();
|
||||
arch_unoptimize_kprobe(op);
|
||||
|
|
@ -624,7 +624,7 @@ static __kprobes void force_unoptimize_kprobe(struct optimized_kprobe *op)
|
|||
}
|
||||
|
||||
/* Unoptimize a kprobe if p is optimized */
|
||||
static __kprobes void unoptimize_kprobe(struct kprobe *p, bool force)
|
||||
static void unoptimize_kprobe(struct kprobe *p, bool force)
|
||||
{
|
||||
struct optimized_kprobe *op;
|
||||
|
||||
|
|
@ -684,7 +684,7 @@ static void reuse_unused_kprobe(struct kprobe *ap)
|
|||
}
|
||||
|
||||
/* Remove optimized instructions */
|
||||
static void __kprobes kill_optimized_kprobe(struct kprobe *p)
|
||||
static void kill_optimized_kprobe(struct kprobe *p)
|
||||
{
|
||||
struct optimized_kprobe *op;
|
||||
|
||||
|
|
@ -710,7 +710,7 @@ static void __kprobes kill_optimized_kprobe(struct kprobe *p)
|
|||
}
|
||||
|
||||
/* Try to prepare optimized instructions */
|
||||
static __kprobes void prepare_optimized_kprobe(struct kprobe *p)
|
||||
static void prepare_optimized_kprobe(struct kprobe *p)
|
||||
{
|
||||
struct optimized_kprobe *op;
|
||||
|
||||
|
|
@ -719,7 +719,7 @@ static __kprobes void prepare_optimized_kprobe(struct kprobe *p)
|
|||
}
|
||||
|
||||
/* Allocate new optimized_kprobe and try to prepare optimized instructions */
|
||||
static __kprobes struct kprobe *alloc_aggr_kprobe(struct kprobe *p)
|
||||
static struct kprobe *alloc_aggr_kprobe(struct kprobe *p)
|
||||
{
|
||||
struct optimized_kprobe *op;
|
||||
|
||||
|
|
@ -734,13 +734,13 @@ static __kprobes struct kprobe *alloc_aggr_kprobe(struct kprobe *p)
|
|||
return &op->kp;
|
||||
}
|
||||
|
||||
static void __kprobes init_aggr_kprobe(struct kprobe *ap, struct kprobe *p);
|
||||
static void init_aggr_kprobe(struct kprobe *ap, struct kprobe *p);
|
||||
|
||||
/*
|
||||
* Prepare an optimized_kprobe and optimize it
|
||||
* NOTE: p must be a normal registered kprobe
|
||||
*/
|
||||
static __kprobes void try_to_optimize_kprobe(struct kprobe *p)
|
||||
static void try_to_optimize_kprobe(struct kprobe *p)
|
||||
{
|
||||
struct kprobe *ap;
|
||||
struct optimized_kprobe *op;
|
||||
|
|
@ -774,7 +774,7 @@ out:
|
|||
}
|
||||
|
||||
#ifdef CONFIG_SYSCTL
|
||||
static void __kprobes optimize_all_kprobes(void)
|
||||
static void optimize_all_kprobes(void)
|
||||
{
|
||||
struct hlist_head *head;
|
||||
struct kprobe *p;
|
||||
|
|
@ -797,7 +797,7 @@ out:
|
|||
mutex_unlock(&kprobe_mutex);
|
||||
}
|
||||
|
||||
static void __kprobes unoptimize_all_kprobes(void)
|
||||
static void unoptimize_all_kprobes(void)
|
||||
{
|
||||
struct hlist_head *head;
|
||||
struct kprobe *p;
|
||||
|
|
@ -848,7 +848,7 @@ int proc_kprobes_optimization_handler(struct ctl_table *table, int write,
|
|||
#endif /* CONFIG_SYSCTL */
|
||||
|
||||
/* Put a breakpoint for a probe. Must be called with text_mutex locked */
|
||||
static void __kprobes __arm_kprobe(struct kprobe *p)
|
||||
static void __arm_kprobe(struct kprobe *p)
|
||||
{
|
||||
struct kprobe *_p;
|
||||
|
||||
|
|
@ -863,7 +863,7 @@ static void __kprobes __arm_kprobe(struct kprobe *p)
|
|||
}
|
||||
|
||||
/* Remove the breakpoint of a probe. Must be called with text_mutex locked */
|
||||
static void __kprobes __disarm_kprobe(struct kprobe *p, bool reopt)
|
||||
static void __disarm_kprobe(struct kprobe *p, bool reopt)
|
||||
{
|
||||
struct kprobe *_p;
|
||||
|
||||
|
|
@ -898,13 +898,13 @@ static void reuse_unused_kprobe(struct kprobe *ap)
|
|||
BUG_ON(kprobe_unused(ap));
|
||||
}
|
||||
|
||||
static __kprobes void free_aggr_kprobe(struct kprobe *p)
|
||||
static void free_aggr_kprobe(struct kprobe *p)
|
||||
{
|
||||
arch_remove_kprobe(p);
|
||||
kfree(p);
|
||||
}
|
||||
|
||||
static __kprobes struct kprobe *alloc_aggr_kprobe(struct kprobe *p)
|
||||
static struct kprobe *alloc_aggr_kprobe(struct kprobe *p)
|
||||
{
|
||||
return kzalloc(sizeof(struct kprobe), GFP_KERNEL);
|
||||
}
|
||||
|
|
@ -918,7 +918,7 @@ static struct ftrace_ops kprobe_ftrace_ops __read_mostly = {
|
|||
static int kprobe_ftrace_enabled;
|
||||
|
||||
/* Must ensure p->addr is really on ftrace */
|
||||
static int __kprobes prepare_kprobe(struct kprobe *p)
|
||||
static int prepare_kprobe(struct kprobe *p)
|
||||
{
|
||||
if (!kprobe_ftrace(p))
|
||||
return arch_prepare_kprobe(p);
|
||||
|
|
@ -927,7 +927,7 @@ static int __kprobes prepare_kprobe(struct kprobe *p)
|
|||
}
|
||||
|
||||
/* Caller must lock kprobe_mutex */
|
||||
static void __kprobes arm_kprobe_ftrace(struct kprobe *p)
|
||||
static void arm_kprobe_ftrace(struct kprobe *p)
|
||||
{
|
||||
int ret;
|
||||
|
||||
|
|
@ -942,7 +942,7 @@ static void __kprobes arm_kprobe_ftrace(struct kprobe *p)
|
|||
}
|
||||
|
||||
/* Caller must lock kprobe_mutex */
|
||||
static void __kprobes disarm_kprobe_ftrace(struct kprobe *p)
|
||||
static void disarm_kprobe_ftrace(struct kprobe *p)
|
||||
{
|
||||
int ret;
|
||||
|
||||
|
|
@ -962,7 +962,7 @@ static void __kprobes disarm_kprobe_ftrace(struct kprobe *p)
|
|||
#endif
|
||||
|
||||
/* Arm a kprobe with text_mutex */
|
||||
static void __kprobes arm_kprobe(struct kprobe *kp)
|
||||
static void arm_kprobe(struct kprobe *kp)
|
||||
{
|
||||
if (unlikely(kprobe_ftrace(kp))) {
|
||||
arm_kprobe_ftrace(kp);
|
||||
|
|
@ -979,7 +979,7 @@ static void __kprobes arm_kprobe(struct kprobe *kp)
|
|||
}
|
||||
|
||||
/* Disarm a kprobe with text_mutex */
|
||||
static void __kprobes disarm_kprobe(struct kprobe *kp, bool reopt)
|
||||
static void disarm_kprobe(struct kprobe *kp, bool reopt)
|
||||
{
|
||||
if (unlikely(kprobe_ftrace(kp))) {
|
||||
disarm_kprobe_ftrace(kp);
|
||||
|
|
@ -1189,7 +1189,7 @@ static void __kprobes cleanup_rp_inst(struct kretprobe *rp)
|
|||
* Add the new probe to ap->list. Fail if this is the
|
||||
* second jprobe at the address - two jprobes can't coexist
|
||||
*/
|
||||
static int __kprobes add_new_kprobe(struct kprobe *ap, struct kprobe *p)
|
||||
static int add_new_kprobe(struct kprobe *ap, struct kprobe *p)
|
||||
{
|
||||
BUG_ON(kprobe_gone(ap) || kprobe_gone(p));
|
||||
|
||||
|
|
@ -1213,7 +1213,7 @@ static int __kprobes add_new_kprobe(struct kprobe *ap, struct kprobe *p)
|
|||
* Fill in the required fields of the "manager kprobe". Replace the
|
||||
* earlier kprobe in the hlist with the manager kprobe
|
||||
*/
|
||||
static void __kprobes init_aggr_kprobe(struct kprobe *ap, struct kprobe *p)
|
||||
static void init_aggr_kprobe(struct kprobe *ap, struct kprobe *p)
|
||||
{
|
||||
/* Copy p's insn slot to ap */
|
||||
copy_kprobe(p, ap);
|
||||
|
|
@ -1239,8 +1239,7 @@ static void __kprobes init_aggr_kprobe(struct kprobe *ap, struct kprobe *p)
|
|||
* This is the second or subsequent kprobe at the address - handle
|
||||
* the intricacies
|
||||
*/
|
||||
static int __kprobes register_aggr_kprobe(struct kprobe *orig_p,
|
||||
struct kprobe *p)
|
||||
static int register_aggr_kprobe(struct kprobe *orig_p, struct kprobe *p)
|
||||
{
|
||||
int ret = 0;
|
||||
struct kprobe *ap = orig_p;
|
||||
|
|
@ -1318,7 +1317,7 @@ bool __weak arch_within_kprobe_blacklist(unsigned long addr)
|
|||
addr < (unsigned long)__kprobes_text_end;
|
||||
}
|
||||
|
||||
static bool __kprobes within_kprobe_blacklist(unsigned long addr)
|
||||
static bool within_kprobe_blacklist(unsigned long addr)
|
||||
{
|
||||
struct kprobe_blacklist_entry *ent;
|
||||
|
||||
|
|
@ -1342,7 +1341,7 @@ static bool __kprobes within_kprobe_blacklist(unsigned long addr)
|
|||
* This returns encoded errors if it fails to look up symbol or invalid
|
||||
* combination of parameters.
|
||||
*/
|
||||
static kprobe_opcode_t __kprobes *kprobe_addr(struct kprobe *p)
|
||||
static kprobe_opcode_t *kprobe_addr(struct kprobe *p)
|
||||
{
|
||||
kprobe_opcode_t *addr = p->addr;
|
||||
|
||||
|
|
@ -1365,7 +1364,7 @@ invalid:
|
|||
}
|
||||
|
||||
/* Check passed kprobe is valid and return kprobe in kprobe_table. */
|
||||
static struct kprobe * __kprobes __get_valid_kprobe(struct kprobe *p)
|
||||
static struct kprobe *__get_valid_kprobe(struct kprobe *p)
|
||||
{
|
||||
struct kprobe *ap, *list_p;
|
||||
|
||||
|
|
@ -1397,8 +1396,8 @@ static inline int check_kprobe_rereg(struct kprobe *p)
|
|||
return ret;
|
||||
}
|
||||
|
||||
static __kprobes int check_kprobe_address_safe(struct kprobe *p,
|
||||
struct module **probed_mod)
|
||||
static int check_kprobe_address_safe(struct kprobe *p,
|
||||
struct module **probed_mod)
|
||||
{
|
||||
int ret = 0;
|
||||
unsigned long ftrace_addr;
|
||||
|
|
@ -1460,7 +1459,7 @@ out:
|
|||
return ret;
|
||||
}
|
||||
|
||||
int __kprobes register_kprobe(struct kprobe *p)
|
||||
int register_kprobe(struct kprobe *p)
|
||||
{
|
||||
int ret;
|
||||
struct kprobe *old_p;
|
||||
|
|
@ -1522,7 +1521,7 @@ out:
|
|||
EXPORT_SYMBOL_GPL(register_kprobe);
|
||||
|
||||
/* Check if all probes on the aggrprobe are disabled */
|
||||
static int __kprobes aggr_kprobe_disabled(struct kprobe *ap)
|
||||
static int aggr_kprobe_disabled(struct kprobe *ap)
|
||||
{
|
||||
struct kprobe *kp;
|
||||
|
||||
|
|
@ -1538,7 +1537,7 @@ static int __kprobes aggr_kprobe_disabled(struct kprobe *ap)
|
|||
}
|
||||
|
||||
/* Disable one kprobe: Make sure called under kprobe_mutex is locked */
|
||||
static struct kprobe *__kprobes __disable_kprobe(struct kprobe *p)
|
||||
static struct kprobe *__disable_kprobe(struct kprobe *p)
|
||||
{
|
||||
struct kprobe *orig_p;
|
||||
|
||||
|
|
@ -1565,7 +1564,7 @@ static struct kprobe *__kprobes __disable_kprobe(struct kprobe *p)
|
|||
/*
|
||||
* Unregister a kprobe without a scheduler synchronization.
|
||||
*/
|
||||
static int __kprobes __unregister_kprobe_top(struct kprobe *p)
|
||||
static int __unregister_kprobe_top(struct kprobe *p)
|
||||
{
|
||||
struct kprobe *ap, *list_p;
|
||||
|
||||
|
|
@ -1622,7 +1621,7 @@ disarmed:
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void __kprobes __unregister_kprobe_bottom(struct kprobe *p)
|
||||
static void __unregister_kprobe_bottom(struct kprobe *p)
|
||||
{
|
||||
struct kprobe *ap;
|
||||
|
||||
|
|
@ -1638,7 +1637,7 @@ static void __kprobes __unregister_kprobe_bottom(struct kprobe *p)
|
|||
/* Otherwise, do nothing. */
|
||||
}
|
||||
|
||||
int __kprobes register_kprobes(struct kprobe **kps, int num)
|
||||
int register_kprobes(struct kprobe **kps, int num)
|
||||
{
|
||||
int i, ret = 0;
|
||||
|
||||
|
|
@ -1656,13 +1655,13 @@ int __kprobes register_kprobes(struct kprobe **kps, int num)
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(register_kprobes);
|
||||
|
||||
void __kprobes unregister_kprobe(struct kprobe *p)
|
||||
void unregister_kprobe(struct kprobe *p)
|
||||
{
|
||||
unregister_kprobes(&p, 1);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(unregister_kprobe);
|
||||
|
||||
void __kprobes unregister_kprobes(struct kprobe **kps, int num)
|
||||
void unregister_kprobes(struct kprobe **kps, int num)
|
||||
{
|
||||
int i;
|
||||
|
||||
|
|
@ -1691,7 +1690,7 @@ unsigned long __weak arch_deref_entry_point(void *entry)
|
|||
return (unsigned long)entry;
|
||||
}
|
||||
|
||||
int __kprobes register_jprobes(struct jprobe **jps, int num)
|
||||
int register_jprobes(struct jprobe **jps, int num)
|
||||
{
|
||||
struct jprobe *jp;
|
||||
int ret = 0, i;
|
||||
|
|
@ -1722,19 +1721,19 @@ int __kprobes register_jprobes(struct jprobe **jps, int num)
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(register_jprobes);
|
||||
|
||||
int __kprobes register_jprobe(struct jprobe *jp)
|
||||
int register_jprobe(struct jprobe *jp)
|
||||
{
|
||||
return register_jprobes(&jp, 1);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(register_jprobe);
|
||||
|
||||
void __kprobes unregister_jprobe(struct jprobe *jp)
|
||||
void unregister_jprobe(struct jprobe *jp)
|
||||
{
|
||||
unregister_jprobes(&jp, 1);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(unregister_jprobe);
|
||||
|
||||
void __kprobes unregister_jprobes(struct jprobe **jps, int num)
|
||||
void unregister_jprobes(struct jprobe **jps, int num)
|
||||
{
|
||||
int i;
|
||||
|
||||
|
|
@ -1799,7 +1798,7 @@ static int __kprobes pre_handler_kretprobe(struct kprobe *p,
|
|||
return 0;
|
||||
}
|
||||
|
||||
int __kprobes register_kretprobe(struct kretprobe *rp)
|
||||
int register_kretprobe(struct kretprobe *rp)
|
||||
{
|
||||
int ret = 0;
|
||||
struct kretprobe_instance *inst;
|
||||
|
|
@ -1852,7 +1851,7 @@ int __kprobes register_kretprobe(struct kretprobe *rp)
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(register_kretprobe);
|
||||
|
||||
int __kprobes register_kretprobes(struct kretprobe **rps, int num)
|
||||
int register_kretprobes(struct kretprobe **rps, int num)
|
||||
{
|
||||
int ret = 0, i;
|
||||
|
||||
|
|
@ -1870,13 +1869,13 @@ int __kprobes register_kretprobes(struct kretprobe **rps, int num)
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(register_kretprobes);
|
||||
|
||||
void __kprobes unregister_kretprobe(struct kretprobe *rp)
|
||||
void unregister_kretprobe(struct kretprobe *rp)
|
||||
{
|
||||
unregister_kretprobes(&rp, 1);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(unregister_kretprobe);
|
||||
|
||||
void __kprobes unregister_kretprobes(struct kretprobe **rps, int num)
|
||||
void unregister_kretprobes(struct kretprobe **rps, int num)
|
||||
{
|
||||
int i;
|
||||
|
||||
|
|
@ -1899,24 +1898,24 @@ void __kprobes unregister_kretprobes(struct kretprobe **rps, int num)
|
|||
EXPORT_SYMBOL_GPL(unregister_kretprobes);
|
||||
|
||||
#else /* CONFIG_KRETPROBES */
|
||||
int __kprobes register_kretprobe(struct kretprobe *rp)
|
||||
int register_kretprobe(struct kretprobe *rp)
|
||||
{
|
||||
return -ENOSYS;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(register_kretprobe);
|
||||
|
||||
int __kprobes register_kretprobes(struct kretprobe **rps, int num)
|
||||
int register_kretprobes(struct kretprobe **rps, int num)
|
||||
{
|
||||
return -ENOSYS;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(register_kretprobes);
|
||||
|
||||
void __kprobes unregister_kretprobe(struct kretprobe *rp)
|
||||
void unregister_kretprobe(struct kretprobe *rp)
|
||||
{
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(unregister_kretprobe);
|
||||
|
||||
void __kprobes unregister_kretprobes(struct kretprobe **rps, int num)
|
||||
void unregister_kretprobes(struct kretprobe **rps, int num)
|
||||
{
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(unregister_kretprobes);
|
||||
|
|
@ -1930,7 +1929,7 @@ static int __kprobes pre_handler_kretprobe(struct kprobe *p,
|
|||
#endif /* CONFIG_KRETPROBES */
|
||||
|
||||
/* Set the kprobe gone and remove its instruction buffer. */
|
||||
static void __kprobes kill_kprobe(struct kprobe *p)
|
||||
static void kill_kprobe(struct kprobe *p)
|
||||
{
|
||||
struct kprobe *kp;
|
||||
|
||||
|
|
@ -1954,7 +1953,7 @@ static void __kprobes kill_kprobe(struct kprobe *p)
|
|||
}
|
||||
|
||||
/* Disable one kprobe */
|
||||
int __kprobes disable_kprobe(struct kprobe *kp)
|
||||
int disable_kprobe(struct kprobe *kp)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
|
|
@ -1970,7 +1969,7 @@ int __kprobes disable_kprobe(struct kprobe *kp)
|
|||
EXPORT_SYMBOL_GPL(disable_kprobe);
|
||||
|
||||
/* Enable one kprobe */
|
||||
int __kprobes enable_kprobe(struct kprobe *kp)
|
||||
int enable_kprobe(struct kprobe *kp)
|
||||
{
|
||||
int ret = 0;
|
||||
struct kprobe *p;
|
||||
|
|
@ -2043,8 +2042,8 @@ static int __init populate_kprobe_blacklist(unsigned long *start,
|
|||
}
|
||||
|
||||
/* Module notifier call back, checking kprobes on the module */
|
||||
static int __kprobes kprobes_module_callback(struct notifier_block *nb,
|
||||
unsigned long val, void *data)
|
||||
static int kprobes_module_callback(struct notifier_block *nb,
|
||||
unsigned long val, void *data)
|
||||
{
|
||||
struct module *mod = data;
|
||||
struct hlist_head *head;
|
||||
|
|
@ -2145,7 +2144,7 @@ static int __init init_kprobes(void)
|
|||
}
|
||||
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
static void __kprobes report_probe(struct seq_file *pi, struct kprobe *p,
|
||||
static void report_probe(struct seq_file *pi, struct kprobe *p,
|
||||
const char *sym, int offset, char *modname, struct kprobe *pp)
|
||||
{
|
||||
char *kprobe_type;
|
||||
|
|
@ -2174,12 +2173,12 @@ static void __kprobes report_probe(struct seq_file *pi, struct kprobe *p,
|
|||
(kprobe_ftrace(pp) ? "[FTRACE]" : ""));
|
||||
}
|
||||
|
||||
static void __kprobes *kprobe_seq_start(struct seq_file *f, loff_t *pos)
|
||||
static void *kprobe_seq_start(struct seq_file *f, loff_t *pos)
|
||||
{
|
||||
return (*pos < KPROBE_TABLE_SIZE) ? pos : NULL;
|
||||
}
|
||||
|
||||
static void __kprobes *kprobe_seq_next(struct seq_file *f, void *v, loff_t *pos)
|
||||
static void *kprobe_seq_next(struct seq_file *f, void *v, loff_t *pos)
|
||||
{
|
||||
(*pos)++;
|
||||
if (*pos >= KPROBE_TABLE_SIZE)
|
||||
|
|
@ -2187,12 +2186,12 @@ static void __kprobes *kprobe_seq_next(struct seq_file *f, void *v, loff_t *pos)
|
|||
return pos;
|
||||
}
|
||||
|
||||
static void __kprobes kprobe_seq_stop(struct seq_file *f, void *v)
|
||||
static void kprobe_seq_stop(struct seq_file *f, void *v)
|
||||
{
|
||||
/* Nothing to do */
|
||||
}
|
||||
|
||||
static int __kprobes show_kprobe_addr(struct seq_file *pi, void *v)
|
||||
static int show_kprobe_addr(struct seq_file *pi, void *v)
|
||||
{
|
||||
struct hlist_head *head;
|
||||
struct kprobe *p, *kp;
|
||||
|
|
@ -2223,7 +2222,7 @@ static const struct seq_operations kprobes_seq_ops = {
|
|||
.show = show_kprobe_addr
|
||||
};
|
||||
|
||||
static int __kprobes kprobes_open(struct inode *inode, struct file *filp)
|
||||
static int kprobes_open(struct inode *inode, struct file *filp)
|
||||
{
|
||||
return seq_open(filp, &kprobes_seq_ops);
|
||||
}
|
||||
|
|
@ -2235,7 +2234,7 @@ static const struct file_operations debugfs_kprobes_operations = {
|
|||
.release = seq_release,
|
||||
};
|
||||
|
||||
static void __kprobes arm_all_kprobes(void)
|
||||
static void arm_all_kprobes(void)
|
||||
{
|
||||
struct hlist_head *head;
|
||||
struct kprobe *p;
|
||||
|
|
@ -2263,7 +2262,7 @@ already_enabled:
|
|||
return;
|
||||
}
|
||||
|
||||
static void __kprobes disarm_all_kprobes(void)
|
||||
static void disarm_all_kprobes(void)
|
||||
{
|
||||
struct hlist_head *head;
|
||||
struct kprobe *p;
|
||||
|
|
@ -2347,7 +2346,7 @@ static const struct file_operations fops_kp = {
|
|||
.llseek = default_llseek,
|
||||
};
|
||||
|
||||
static int __kprobes debugfs_kprobe_init(void)
|
||||
static int __init debugfs_kprobe_init(void)
|
||||
{
|
||||
struct dentry *dir, *file;
|
||||
unsigned int value = 1;
|
||||
|
|
|
|||
Loading…
Reference in New Issue