From: Oleg Nesterov <oleg@redhat.com>
To: Sudeep Holla <sudeep.holla@arm.com>
Cc: Haibo Xu <haibo.xu@arm.com>, Steve Capper <Steve.Capper@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
jdike@addtoit.com, x86@kernel.org,
Will Deacon <will.deacon@arm.com>,
linux-kernel@vger.kernel.org, Bin Lu <bin.lu@arm.com>,
Richard Weinberger <richard@nod.at>,
Ingo Molnar <mingo@redhat.com>, Paul Mackerras <paulus@samba.org>,
Andy Lutomirski <luto@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 1/6] ptrace: move clearing of TIF_SYSCALL_EMU flag to core
Date: Mon, 18 Mar 2019 18:29:11 +0100 [thread overview]
Message-ID: <20190318172911.GC23521@redhat.com> (raw)
In-Reply-To: <20190318104925.16600-2-sudeep.holla@arm.com>
On 03/18, Sudeep Holla wrote:
>
@@ -534,6 +534,10 @@ static int ptrace_detach(struct task_struct *child, unsigned int data)
> /* Architecture-specific hardware disable .. */
> ptrace_disable(child);
>
> +#ifdef TIF_SYSCALL_EMU
> + clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
> +#endif
perhaps it makes sense to factor out clear_tsk_thread_flag(TIF_SYSCALL_EMU), but
then we should probably clear it along with TIF_SYSCALL_TRACE in __ptrace_unlink?
Oleg.
WARNING: multiple messages have this Message-ID (diff)
From: Oleg Nesterov <oleg@redhat.com>
To: Sudeep Holla <sudeep.holla@arm.com>
Cc: Haibo Xu <haibo.xu@arm.com>, Steve Capper <Steve.Capper@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
jdike@addtoit.com, x86@kernel.org,
Will Deacon <will.deacon@arm.com>,
linux-kernel@vger.kernel.org, Bin Lu <bin.lu@arm.com>,
Richard Weinberger <richard@nod.at>,
Ingo Molnar <mingo@redhat.com>, Paul Mackerras <paulus@samba.org>,
Andy Lutomirski <luto@kernel.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Thomas Gleixner <tglx@linutronix.de>,
linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 1/6] ptrace: move clearing of TIF_SYSCALL_EMU flag to core
Date: Mon, 18 Mar 2019 18:29:11 +0100 [thread overview]
Message-ID: <20190318172911.GC23521@redhat.com> (raw)
In-Reply-To: <20190318104925.16600-2-sudeep.holla@arm.com>
On 03/18, Sudeep Holla wrote:
>
@@ -534,6 +534,10 @@ static int ptrace_detach(struct task_struct *child, unsigned int data)
> /* Architecture-specific hardware disable .. */
> ptrace_disable(child);
>
> +#ifdef TIF_SYSCALL_EMU
> + clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
> +#endif
perhaps it makes sense to factor out clear_tsk_thread_flag(TIF_SYSCALL_EMU), but
then we should probably clear it along with TIF_SYSCALL_TRACE in __ptrace_unlink?
Oleg.
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: Oleg Nesterov <oleg@redhat.com>
To: Sudeep Holla <sudeep.holla@arm.com>
Cc: x86@kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Richard Weinberger <richard@nod.at>,
jdike@addtoit.com, Steve Capper <Steve.Capper@arm.com>,
Haibo Xu <haibo.xu@arm.com>, Bin Lu <bin.lu@arm.com>,
Andy Lutomirski <luto@kernel.org>
Subject: Re: [PATCH v2 1/6] ptrace: move clearing of TIF_SYSCALL_EMU flag to core
Date: Mon, 18 Mar 2019 18:29:11 +0100 [thread overview]
Message-ID: <20190318172911.GC23521@redhat.com> (raw)
In-Reply-To: <20190318104925.16600-2-sudeep.holla@arm.com>
On 03/18, Sudeep Holla wrote:
>
@@ -534,6 +534,10 @@ static int ptrace_detach(struct task_struct *child, unsigned int data)
> /* Architecture-specific hardware disable .. */
> ptrace_disable(child);
>
> +#ifdef TIF_SYSCALL_EMU
> + clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
> +#endif
perhaps it makes sense to factor out clear_tsk_thread_flag(TIF_SYSCALL_EMU), but
then we should probably clear it along with TIF_SYSCALL_TRACE in __ptrace_unlink?
Oleg.
next prev parent reply other threads:[~2019-03-18 17:30 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-18 10:49 [PATCH v2 0/6] ptrace: consolidate PTRACE_SYSEMU handling and add support for arm64 Sudeep Holla
2019-03-18 10:49 ` Sudeep Holla
2019-03-18 10:49 ` Sudeep Holla
2019-03-18 10:49 ` [PATCH v2 1/6] ptrace: move clearing of TIF_SYSCALL_EMU flag to core Sudeep Holla
2019-03-18 10:49 ` Sudeep Holla
2019-03-18 10:49 ` Sudeep Holla
2019-03-18 17:29 ` Oleg Nesterov [this message]
2019-03-18 17:29 ` Oleg Nesterov
2019-03-18 17:29 ` Oleg Nesterov
2019-03-18 10:49 ` [PATCH v2 2/6] ptrace: introduce ptrace_syscall_enter to consolidate PTRACE_SYSEMU handling Sudeep Holla
2019-03-18 10:49 ` Sudeep Holla
2019-03-18 10:49 ` Sudeep Holla
2019-03-18 14:31 ` Dmitry V. Levin
2019-03-18 14:31 ` Dmitry V. Levin
2019-03-18 14:31 ` Dmitry V. Levin
2019-03-18 14:55 ` Sudeep Holla
2019-03-18 14:55 ` Sudeep Holla
2019-03-18 14:55 ` Sudeep Holla
2019-03-18 14:41 ` Dmitry V. Levin
2019-03-18 14:41 ` Dmitry V. Levin
2019-03-18 14:41 ` Dmitry V. Levin
2019-03-18 14:57 ` Sudeep Holla
2019-03-18 14:57 ` Sudeep Holla
2019-03-18 14:57 ` Sudeep Holla
2019-03-18 10:49 ` [PATCH v2 3/6] x86: clean up _TIF_SYSCALL_EMU handling using ptrace_syscall_enter hook Sudeep Holla
2019-03-18 10:49 ` Sudeep Holla
2019-03-18 10:49 ` Sudeep Holla
2019-03-18 15:33 ` Oleg Nesterov
2019-03-18 15:33 ` Oleg Nesterov
2019-03-18 15:33 ` Oleg Nesterov
2019-04-30 16:44 ` Sudeep Holla
2019-04-30 16:44 ` Sudeep Holla
2019-04-30 16:44 ` Sudeep Holla
2019-05-01 15:57 ` Oleg Nesterov
2019-05-01 15:57 ` Oleg Nesterov
2019-05-01 15:57 ` Oleg Nesterov
2019-05-01 16:51 ` Sudeep Holla
2019-05-01 16:51 ` Sudeep Holla
2019-05-01 16:51 ` Sudeep Holla
2019-04-30 16:46 ` Andy Lutomirski
2019-04-30 16:46 ` Andy Lutomirski
2019-04-30 16:46 ` Andy Lutomirski
2019-04-30 17:09 ` Sudeep Holla
2019-04-30 17:09 ` Sudeep Holla
2019-04-30 17:09 ` Sudeep Holla
2019-03-18 10:49 ` [PATCH v2 4/6] powerpc: use common ptrace_syscall_enter hook to handle _TIF_SYSCALL_EMU Sudeep Holla
2019-03-18 10:49 ` Sudeep Holla
2019-03-18 10:49 ` Sudeep Holla
2019-03-18 14:26 ` Dmitry V. Levin
2019-03-18 14:26 ` Dmitry V. Levin
2019-03-18 14:26 ` Dmitry V. Levin
2019-03-18 14:59 ` Sudeep Holla
2019-03-18 14:59 ` Sudeep Holla
2019-03-18 14:59 ` Sudeep Holla
2019-03-18 17:20 ` Oleg Nesterov
2019-03-18 17:20 ` Oleg Nesterov
2019-03-18 17:20 ` Oleg Nesterov
2019-03-18 17:24 ` Sudeep Holla
2019-03-18 17:24 ` Sudeep Holla
2019-03-18 17:24 ` Sudeep Holla
2019-03-18 17:33 ` Oleg Nesterov
2019-03-18 17:33 ` Oleg Nesterov
2019-03-18 17:33 ` Oleg Nesterov
2019-03-18 17:40 ` Sudeep Holla
2019-03-18 17:40 ` Sudeep Holla
2019-03-18 17:40 ` Sudeep Holla
2019-03-19 17:08 ` Oleg Nesterov
2019-03-19 17:08 ` Oleg Nesterov
2019-03-19 17:08 ` Oleg Nesterov
2019-03-19 17:32 ` Oleg Nesterov
2019-03-19 17:32 ` Oleg Nesterov
2019-03-19 17:32 ` Oleg Nesterov
2019-04-03 16:50 ` Will Deacon
2019-04-03 16:50 ` Will Deacon
2019-04-03 16:50 ` Will Deacon
2019-03-18 10:49 ` [PATCH v2 5/6] arm64: add PTRACE_SYSEMU{, SINGLESTEP} definations to uapi headers Sudeep Holla
2019-03-18 10:49 ` [PATCH v2 5/6] arm64: add PTRACE_SYSEMU{,SINGLESTEP} " Sudeep Holla
2019-03-18 10:49 ` [PATCH v2 5/6] arm64: add PTRACE_SYSEMU{, SINGLESTEP} " Sudeep Holla
2019-03-18 10:49 ` [PATCH v2 6/6] arm64: ptrace: add support for syscall emulation Sudeep Holla
2019-03-18 10:49 ` Sudeep Holla
2019-03-18 10:49 ` Sudeep Holla
2019-03-19 3:26 ` Haibo Xu (Arm Technology China)
2019-03-19 3:26 ` Haibo Xu (Arm Technology China)
2019-03-19 3:26 ` Haibo Xu (Arm Technology China)
2019-03-18 20:04 ` [PATCH v2 0/6] ptrace: consolidate PTRACE_SYSEMU handling and add support for arm64 Andy Lutomirski
2019-03-18 20:04 ` Andy Lutomirski
2019-03-18 20:04 ` Andy Lutomirski
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