From: "Kohli, Gaurav" <gkohli@codeaurora.org>
To: tj@kernel.org, nborisov@suse.com, akpm@linux-foundation.org,
linux-kernel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org
Subject: Query:Regarding percpu_counter debug object destroy
Date: Fri, 13 Apr 2018 13:02:00 +0530 [thread overview]
Message-ID: <0754201b-2051-3f1c-7a09-ed1be96a0260@codeaurora.org> (raw)
Hi ,
I have checked below code and it seems we are calling debug_object_free twice, ideally we should deactivate and later we
have to destroy.
1st call -> percpu_counter_destroy->debug_percpu_counter_deactivate -> debug_object_free
2nd call ->
debug_object_free
static bool percpu_counter_fixup_free(void *addr, enum debug_obj_state state)
{
struct percpu_counter *fbc = addr;
switch (state) {
case ODEBUG_STATE_ACTIVE:
percpu_counter_destroy(fbc); -> first call
debug_object_free(fbc, &percpu_counter_debug_descr); 2nd call
return true;
default:
return false;
}
}
We are seeing one issue, where one list contain garbage data in obj_hash, just before element of that is percpu_counter but
still not sure as it is very difficult to reproduce.
Can some one please review above code or can we remove one instance of debug_object_free from above code.
Regards
Gaurav
--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.
next reply other threads:[~2018-04-13 7:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-13 7:32 Kohli, Gaurav [this message]
2018-04-13 7:42 ` Nikolay Borisov
2018-04-13 8:46 ` Kohli, Gaurav
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