Jiang Liu ff016619c9 kprobes: fix a memory leak in function pre_handler_kretprobe() ...

commit 55ca6140e9 upstream.

In function pre_handler_kretprobe(), the allocated kretprobe_instance
object will get leaked if the entry_handler callback returns non-zero.
This may cause all the preallocated kretprobe_instance objects exhausted.

This issue can be reproduced by changing
samples/kprobes/kretprobe_example.c to probe "mutex_unlock".  And the fix
is straightforward: just put the allocated kretprobe_instance object back
onto the free_instances list.

[akpm@linux-foundation.org: use raw_spin_lock/unlock]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Jim Keniston <jkenisto@us.ibm.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2012-02-13 11:16:54 -08:00

..

debug

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

events

perf events: Fix ring_buffer_wakeup() brown paperbag bug

2011-12-14 08:44:53 +01:00

gcov

gcov: disable CONSTRUCTORS for UML

2011-07-26 16:49:45 -07:00

irq

genirq: Fix race condition when stopping the irq thread

2011-12-02 11:54:24 +01:00

power

PM / Hibernate: Do not leak memory in error/test code paths

2011-11-23 21:03:38 +01:00

time

Revert "clockevents: Set noop handler in clockevents_exchange_device()"

2011-12-30 13:24:40 -08:00

trace

ftrace: Fix unregister ftrace_ops accounting

2012-01-25 16:13:29 -08:00

.gitignore

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acct.c

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async.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

audit_tree.c

audit_tree,rcu: Convert call_rcu(__put_tree) to kfree_rcu()

2011-07-20 14:10:11 -07:00

audit_watch.c

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audit.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

audit.h

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auditfilter.c

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auditsc.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

backtracetest.c

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bounds.c

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capability.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

cgroup_freezer.c

cgroup_freezer: fix freezing groups with stopped tasks

2011-11-24 11:58:22 -08:00

cgroup.c

cgroup: fix to allow mounting a hierarchy by name

2012-01-12 11:29:35 -08:00

compat.c

kernel: Fix files explicitly needing EXPORT_SYMBOL infrastructure

2011-10-31 19:30:05 -04:00

configs.c

kernel/configs.c: include MODULE_*() when CONFIG_IKCONFIG_PROC=n

2011-07-25 20:57:15 -07:00

cpu_pm.c

cpu_pm: call notifiers during suspend

2011-09-23 12:05:29 +05:30

cpu.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

cpuset.c

cpusets: stall when updating mems_allowed for mempolicy or disjoint nodemask

2011-12-20 10:25:04 -08:00

crash_dump.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

cred.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

delayacct.c

KVM: Steal time implementation

2011-07-14 12:59:14 +03:00

dma.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

elfcore.c

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exec_domain.c

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exit.c

ptrace: partially fix the do_wait(WEXITED) vs EXIT_DEAD->EXIT_ZOMBIE race

2012-01-04 15:01:59 -08:00

extable.c

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fork.c

writeback: remove vm_dirties and task->dirties

2011-11-17 20:49:06 +08:00

freezer.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

futex_compat.c

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futex.c

futex: Fix uninterruptible loop due to gate_area

2011-12-31 11:48:28 -08:00

groups.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

hrtimer.c

Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2011-11-28 08:43:52 -08:00

hung_task.c

hung_task: fix false positive during vfork

2012-01-03 16:14:32 -08:00

irq_work.c

kernel: fix two implicit header assumptions in irq_work.c

2011-10-31 09:20:12 -04:00

itimer.c

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jump_label.c

jump_label: jump_label_inc may return before the code is patched

2011-12-05 13:28:46 -05:00

kallsyms.c

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Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

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Kconfig.preempt

sched: Isolate preempt counting in its own config option

2011-06-10 15:15:40 +02:00

kexec.c

[S390] kdump: Add infrastructure for unmapping crashkernel memory

2011-10-30 15:16:42 +01:00

kfifo.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

kmod.c

kmod: prevent kmod_loop_msg overflow in __request_module()

2011-10-26 13:10:39 +10:30

kprobes.c

kprobes: fix a memory leak in function pre_handler_kretprobe()

2012-02-13 11:16:54 -08:00

ksysfs.c

kernel: ksysfs.c is implicitly using stat.h

2011-10-31 09:20:13 -04:00

kthread.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

latencytop.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

lockdep_internals.h

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lockdep_proc.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

lockdep_states.h

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lockdep.c

lockdep, kmemcheck: Annotate ->lock in lockdep_init_map()

2011-12-06 18:18:13 +01:00

Makefile

Merge branch 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm

2011-10-28 12:02:27 -07:00

module.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

mutex-debug.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

mutex-debug.h

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mutex.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

mutex.h

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notifier.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

nsproxy.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

padata.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

panic.c

module,bug: Add TAINT_OOT_MODULE flag for modules not built in-tree

2011-11-07 07:54:42 +10:30

params.c

kernel: params.c needs module.h not moduleparam.h

2011-10-31 09:20:13 -04:00

pid_namespace.c

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pid.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

posix-cpu-timers.c

Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2011-10-26 16:17:32 +02:00

posix-timers.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

printk.c

printk: avoid double lock acquire

2011-12-09 07:50:28 -08:00

profile.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

ptrace.c

ptrace: ensure JOBCTL_STOP_SIGMASK is not zero after detach

2012-01-04 15:01:59 -08:00

range.c

range: fix bogus misuse of module.h to get printk()

2011-10-31 09:20:11 -04:00

rcu.h

rcu: Add grace-period, quiescent-state, and call_rcu trace events

2011-09-28 21:38:21 -07:00

rcupdate.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rcutiny_plugin.h

kernel: fix up module header handling in rcutiny files

2011-10-31 09:20:13 -04:00

rcutiny.c

kernel: fix up module header handling in rcutiny files

2011-10-31 09:20:13 -04:00

rcutorture.c

rcu: Make rcu_torture_boost() exit loops at end of test

2011-09-28 21:38:46 -07:00

rcutree_plugin.h

rcu: Remove rcu_needs_cpu_flush() to avoid false quiescent states

2011-09-28 21:38:48 -07:00

rcutree_trace.c

rcu: Simplify quiescent-state accounting

2011-09-28 21:38:22 -07:00

rcutree.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rcutree.h

rcu: Remove rcu_needs_cpu_flush() to avoid false quiescent states

2011-09-28 21:38:48 -07:00

relay.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

res_counter.c

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resource.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rtmutex_common.h

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rtmutex-debug.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rtmutex-debug.h

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rtmutex-tester.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rtmutex.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rtmutex.h

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rwsem.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

sched_autogroup.c

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sched_autogroup.h

sched: Skip autogroup when looking for all rt sched groups

2011-07-01 10:39:08 +02:00

sched_clock.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

sched_cpupri.c

sched/cpupri: Remove cpupri->pri_active

2011-08-14 12:01:11 +02:00

sched_cpupri.h

sched/cpupri: Remove cpupri->pri_active

2011-08-14 12:01:11 +02:00

sched_debug.c

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sched_fair.c

sched: Fix select_idle_sibling() regression in selecting an idle SMT sibling

2011-12-16 09:44:58 +01:00

sched_features.h

sched, rt: Provide means of disabling cross-cpu bandwidth sharing

2011-11-14 12:50:40 +01:00

sched_idletask.c

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sched_rt.c

sched, rt: Provide means of disabling cross-cpu bandwidth sharing

2011-11-14 12:50:40 +01:00

sched_stats.h

locking, sched: Annotate thread_group_cputimer as raw

2011-09-13 11:11:55 +02:00

sched_stoptask.c

sched: Implement hierarchical task accounting for SCHED_OTHER

2011-08-14 12:01:13 +02:00

sched.c

sched: Set the command name of the idle tasks in SMP kernels

2011-11-14 12:50:43 +01:00

seccomp.c

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semaphore.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

signal.c

ptrace: ensure JOBCTL_STOP_SIGMASK is not zero after detach

2012-01-04 15:01:59 -08:00

smp.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

softirq.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

spinlock.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

srcu.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

stacktrace.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

stop_machine.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

sys_ni.c

Cross Memory Attach

2011-10-31 17:30:44 -07:00

sys.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

sysctl_binary.c

binary_sysctl(): fix memory leak

2011-12-20 10:25:04 -08:00

sysctl_check.c

xfs: remove subdirectories

2011-08-12 16:21:35 -05:00

sysctl.c

Merge branch 'akpm' (Andrew's incoming)

2011-10-31 17:46:07 -07:00

taskstats.c

Make TASKSTATS require root access

2011-09-19 17:04:37 -07:00

test_kprobes.c

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time.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

timeconst.pl

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timer.c

sys_getppid: add missing rcu_dereference

2011-12-09 07:50:29 -08:00

tracepoint.c

tracepoints/module: Fix disabling tracepoints with taint CRAP or OOT

2012-01-25 16:13:52 -08:00

tsacct.c

Make taskstats round statistics down to nearest 1k bytes/events

2011-09-19 17:10:57 -07:00

uid16.c

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up.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

user_namespace.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

user-return-notifier.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

user.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

utsname_sysctl.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

utsname.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

wait.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

watchdog.c

watchdog: move watchdog_*_all_cpus under CONFIG_SYSCTL

2011-10-31 17:30:53 -07:00

workqueue_sched.h

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workqueue.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00