From: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
To: Oleg Nesterov <oleg@redhat.com>
Cc: srikar@linux.vnet.ibm.com, rostedt@goodmis.org,
mhiramat@kernel.org, liu.song.a23@gmail.com,
peterz@infradead.org, mingo@redhat.com, acme@kernel.org,
alexander.shishkin@linux.intel.com, jolsa@redhat.com,
namhyung@kernel.org, linux-kernel@vger.kernel.org,
ananth@linux.vnet.ibm.com, alexis.berlemont@gmail.com,
naveen.n.rao@linux.vnet.ibm.com,
linux-arm-kernel@lists.infradead.org, linux-mips@linux-mips.org,
linux@armlinux.org.uk, ralf@linux-mips.org, paul.burton@mips.com,
Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Subject: Re: [PATCH v7 3/6] Uprobes: Support SDT markers having reference count (semaphore)
Date: Tue, 7 Aug 2018 18:03:20 +0530 [thread overview]
Message-ID: <4d1e2a17-14ba-f277-8e57-4a4573630ab2@linux.ibm.com> (raw)
In-Reply-To: <20180807113622.GC19831@redhat.com>
Hi Oleg,
>> I'm sorry. I didn't get this. How can uprobe go away without calling
>> uprobe_unregister()
>> -> rergister_for_each_vma()
>> -> remove_breakpoint()
>> And remove_breakpoint() will get called
>
> assuming that _unregister() will find the same vma with the probed insn. But
> as I said, the application can munmap the probed page/vma.
Got it now :)
Thanks.
next prev parent reply other threads:[~2018-08-07 12:33 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-31 3:51 [PATCH v7 0/6] Uprobes: Support SDT markers having reference count (semaphore) Ravi Bangoria
2018-07-31 3:51 ` [PATCH v7 1/6] Uprobes: Simplify uprobe_register() body Ravi Bangoria
2018-07-31 3:51 ` [PATCH v7 2/6] Uprobe: Additional argument arch_uprobe to uprobe_write_opcode() Ravi Bangoria
2018-07-31 3:51 ` [PATCH v7 3/6] Uprobes: Support SDT markers having reference count (semaphore) Ravi Bangoria
2018-08-03 11:24 ` Oleg Nesterov
2018-08-06 9:52 ` Ravi Bangoria
2018-08-07 11:36 ` Oleg Nesterov
2018-08-07 12:33 ` Ravi Bangoria [this message]
2018-07-31 3:51 ` [PATCH v7 4/6] Uprobes/sdt: Prevent multiple reference counter for same uprobe Ravi Bangoria
2018-07-31 3:51 ` [PATCH v7 5/6] trace_uprobe/sdt: " Ravi Bangoria
2018-07-31 3:51 ` [PATCH v7 6/6] perf probe: Support SDT markers having reference counter (semaphore) Ravi Bangoria
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