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| author |   Oleg Nesterov <oleg@redhat.com> | 2013-09-11 17:47:26 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2013-09-12 08:00:55 +0200 |
| commit | 878b5a6efd38030c7a90895dc8346e8fb1e09b4c (patch) | |
| tree | 5b58037396e9afa4799106c5c38cf9498d5db2d1 /kernel/events/core.c | |
| parent | perf/x86: Add constraint for IVB CYCLE_ACTIVITY:CYCLES_LDM_PENDING (diff) | |
| download | linux-dev-878b5a6efd38030c7a90895dc8346e8fb1e09b4c.tar.xz linux-dev-878b5a6efd38030c7a90895dc8346e8fb1e09b4c.zip | |
uprobes: Fix utask->depth accounting in handle_trampoline()
Currently utask->depth is simply the number of allocated/pending
return_instance's in uprobe_task->return_instances list.
handle_trampoline() should decrement this counter every time we
handle/free an instance, but due to typo it does this only if
->chained == T. This means that in the likely case this counter
is never decremented and the probed task can't report more than
MAX_URETPROBE_DEPTH events.
Reported-by: Mikhail Kulemin <Mikhail.Kulemin@ru.ibm.com>
Reported-by: Hemant Kumar Shaw <hkshaw@linux.vnet.ibm.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Anton Arapov <anton@redhat.com>
Cc: masami.hiramatsu.pt@hitachi.com
Cc: srikar@linux.vnet.ibm.com
Cc: systemtap@sourceware.org
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20130911154726.GA8093@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/events/core.c')
0 files changed, 0 insertions, 0 deletions