From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
To: Masami Hiramatsu <mhiramat@kernel.org>,
Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: acme@kernel.org, akpm@linux-foundation.org,
alexander.shishkin@linux.intel.com, alexis.berlemont@gmail.com,
ananth@linux.vnet.ibm.com, corbet@lwn.net,
dan.j.williams@intel.com, fengguang.wu@intel.com,
jglisse@redhat.com, jolsa@redhat.com, kan.liang@intel.com,
kjlx@templeofstupid.com, kstewart@linuxfoundation.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, milian.wolff@kdab.com, mingo@redhat.com,
namhyung@kernel.org, oleg@redhat.com, pc@us.ibm.com,
peterz@infradead.org, rostedt@goodmis.org,
srikar@linux.vnet.ibm.com, tglx@linutronix.de,
yao.jin@linux.intel.com
Subject: Re: [PATCH v3 6/9] trace_uprobe: Support SDT markers having reference count (semaphore)
Date: Tue, 08 May 2018 15:16:43 +0530 [thread overview]
Message-ID: <1525772725.o3tzigt8c3.naveen@linux.ibm.com> (raw)
In-Reply-To: <20180508005651.45553d3cf72521481d16b801@kernel.org>
Masami Hiramatsu wrote:
> On Mon, 7 May 2018 13:51:21 +0530
> Ravi Bangoria <ravi.bangoria@linux.ibm.com> wrote:
>
>> BTW, same issue exists for normal uprobe. If uprobe_mmap() fails,
>> there is no feedback to trace_uprobe and no warnigns in dmesg as
>> well !! There was a patch by Naveen to warn such failures in dmesg
>> but that didn't go in: https://lkml.org/lkml/2017/9/22/155
>
> Oops, that's a real bug. It seems the ball is in Naveen's hand.
> Naveen, could you update it according to Oleg's comment, and resend it?
Yes, I've had to put that series on the backburner. I will try and get
to it soon. Thanks for the reminder.
- Naveen
WARNING: multiple messages have this Message-ID (diff)
From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
To: Masami Hiramatsu <mhiramat@kernel.org>,
Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: acme@kernel.org, akpm@linux-foundation.org,
alexander.shishkin@linux.intel.com, alexis.berlemont@gmail.com,
ananth@linux.vnet.ibm.com, corbet@lwn.net,
dan.j.williams@intel.com, fengguang.wu@intel.com,
jglisse@redhat.com, jolsa@redhat.com, kan.liang@intel.com,
kjlx@templeofstupid.com, kstewart@linuxfoundation.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, milian.wolff@kdab.com, mingo@redhat.com,
namhyung@kernel.org, oleg@redhat.com, pc@us.ibm.com,
peterz@infradead.org, rostedt@goodmis.org,
srikar@linux.vnet.ibm.com, tglx@linutronix.de,
yao.jin@linux.intel.com
Subject: Re: [PATCH v3 6/9] trace_uprobe: Support SDT markers having reference count (semaphore)
Date: Tue, 08 May 2018 15:16:43 +0530 [thread overview]
Message-ID: <1525772725.o3tzigt8c3.naveen@linux.ibm.com> (raw)
In-Reply-To: <20180508005651.45553d3cf72521481d16b801@kernel.org>
Masami Hiramatsu wrote:
> On Mon, 7 May 2018 13:51:21 +0530
> Ravi Bangoria <ravi.bangoria@linux.ibm.com> wrote:
>
>> BTW, same issue exists for normal uprobe. If uprobe_mmap() fails,
>> there is no feedback to trace_uprobe and no warnigns in dmesg as
>> well !! There was a patch by Naveen to warn such failures in dmesg
>> but that didn't go in: https://lkml.org/lkml/2017/9/22/155
>
> Oops, that's a real bug. It seems the ball is in Naveen's hand.
> Naveen, could you update it according to Oleg's comment, and resend it?
Yes, I've had to put that series on the backburner. I will try and get
to it soon. Thanks for the reminder.
- Naveen
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next prev parent reply other threads:[~2018-05-08 9:46 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-17 4:32 [PATCH v3 0/9] trace_uprobe: Support SDT markers having reference count (semaphore) Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-04-17 4:32 ` [PATCH v3 1/9] Uprobe: Export vaddr <-> offset conversion functions Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-04-17 4:32 ` [PATCH v3 2/9] mm: Prefix vma_ to vaddr_to_offset() and offset_to_vaddr() Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-05-03 14:59 ` Steven Rostedt
2018-05-03 14:59 ` Steven Rostedt
2018-04-17 4:32 ` [PATCH v3 3/9] Uprobe: Move mmput() into free_map_info() Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-04-17 4:32 ` [PATCH v3 4/9] Uprobe: Rename map_info to uprobe_map_info Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-04-17 4:32 ` [PATCH v3 5/9] Uprobe: Export uprobe_map_info along with uprobe_{build/free}_map_info() Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-04-17 4:32 ` [PATCH v3 6/9] trace_uprobe: Support SDT markers having reference count (semaphore) Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-05-04 4:48 ` Masami Hiramatsu
2018-05-04 4:48 ` Masami Hiramatsu
2018-05-04 14:21 ` Ravi Bangoria
2018-05-04 14:21 ` Ravi Bangoria
2018-05-07 8:21 ` Ravi Bangoria
2018-05-07 8:21 ` Ravi Bangoria
2018-05-07 15:56 ` Masami Hiramatsu
2018-05-07 15:56 ` Masami Hiramatsu
2018-05-08 9:46 ` Naveen N. Rao [this message]
2018-05-08 9:46 ` Naveen N. Rao
2018-05-08 10:26 ` Ravi Bangoria
2018-05-08 10:26 ` Ravi Bangoria
2018-05-24 16:26 ` Oleg Nesterov
2018-05-24 16:26 ` Oleg Nesterov
2018-05-25 8:28 ` Ravi Bangoria
2018-05-25 8:28 ` Ravi Bangoria
2018-04-17 4:32 ` [PATCH v3 7/9] trace_uprobe/sdt: Fix multiple update of same reference counter Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-04-17 4:32 ` [PATCH v3 8/9] trace_uprobe/sdt: Document about " Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-05-03 14:57 ` Masami Hiramatsu
2018-05-03 14:57 ` Masami Hiramatsu
2018-04-17 4:32 ` [PATCH v3 9/9] perf probe: Support SDT markers having reference counter (semaphore) Ravi Bangoria
2018-04-17 4:32 ` Ravi Bangoria
2018-05-03 14:57 ` Masami Hiramatsu
2018-05-03 14:57 ` Masami Hiramatsu
2018-05-03 8:32 ` [PATCH v3 0/9] trace_uprobe: Support SDT markers having reference count (semaphore) Ravi Bangoria
2018-05-03 8:32 ` Ravi Bangoria
2018-05-04 14:30 ` Oleg Nesterov
2018-05-04 14:30 ` Oleg Nesterov
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