From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Dave Martin <Dave.Martin@arm.com>,
James Hogan <james.hogan@imgtec.com>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: [PATCH 4.9 11/16] metag/ptrace: Preserve previous registers for short regset write
Date: Thu, 30 Mar 2017 12:16:02 +0200 [thread overview]
Message-ID: <20170330100432.007947490@linuxfoundation.org> (raw)
In-Reply-To: <20170330100431.550322562@linuxfoundation.org>
4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dave Martin <Dave.Martin@arm.com>
commit a78ce80d2c9178351b34d78fec805140c29c193e upstream.
Ensure that if userspace supplies insufficient data to PTRACE_SETREGSET
to fill all the registers, the thread's old registers are preserved.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/metag/kernel/ptrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/metag/kernel/ptrace.c
+++ b/arch/metag/kernel/ptrace.c
@@ -303,7 +303,7 @@ static int metag_tls_set(struct task_str
const void *kbuf, const void __user *ubuf)
{
int ret;
- void __user *tls;
+ void __user *tls = target->thread.tls_ptr;
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &tls, 0, -1);
if (ret)
next prev parent reply other threads:[~2017-03-30 10:16 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-30 10:15 [PATCH 4.9 00/16] 4.9.20-stable review Greg Kroah-Hartman
2017-03-30 10:15 ` [PATCH 4.9 01/16] xfrm: policy: init locks early Greg Kroah-Hartman
2017-03-30 10:15 ` [PATCH 4.9 02/16] xfrm_user: validate XFRM_MSG_NEWAE XFRMA_REPLAY_ESN_VAL replay_window Greg Kroah-Hartman
2017-03-30 10:15 ` [PATCH 4.9 03/16] xfrm_user: validate XFRM_MSG_NEWAE incoming ESN size harder Greg Kroah-Hartman
2017-03-30 10:15 ` [PATCH 4.9 04/16] KVM: x86: cleanup the page tracking SRCU instance Greg Kroah-Hartman
2017-03-30 10:15 ` [PATCH 4.9 05/16] virtio_balloon: init 1st buffer in stats vq Greg Kroah-Hartman
2017-03-30 10:15 ` [PATCH 4.9 06/16] pinctrl: qcom: Dont clear status bit on irq_unmask Greg Kroah-Hartman
2017-03-30 10:15 ` [PATCH 4.9 07/16] c6x/ptrace: Remove useless PTRACE_SETREGSET implementation Greg Kroah-Hartman
2017-03-30 10:15 ` [PATCH 4.9 08/16] h8300/ptrace: Fix incorrect register transfer count Greg Kroah-Hartman
2017-03-30 10:16 ` [PATCH 4.9 09/16] mips/ptrace: Preserve previous registers for short regset write Greg Kroah-Hartman
2017-03-30 10:16 ` [PATCH 4.9 10/16] sparc/ptrace: " Greg Kroah-Hartman
2017-03-30 10:16 ` Greg Kroah-Hartman [this message]
2017-03-30 10:16 ` [PATCH 4.9 12/16] metag/ptrace: Provide default TXSTATUS for short NT_PRSTATUS Greg Kroah-Hartman
2017-03-30 10:16 ` [PATCH 4.9 13/16] metag/ptrace: Reject partial NT_METAG_RPIPE writes Greg Kroah-Hartman
2017-03-30 10:16 ` [PATCH 4.9 14/16] fscrypt: remove broken support for detecting keyring key revocation Greg Kroah-Hartman
2017-03-30 10:16 ` [PATCH 4.9 15/16] sched/rt: Add a missing rescheduling point Greg Kroah-Hartman
2017-03-30 10:16 ` [PATCH 4.9 16/16] usb: musb: fix possible spinlock deadlock Greg Kroah-Hartman
2017-03-30 18:55 ` [PATCH 4.9 00/16] 4.9.20-stable review Shuah Khan
2017-03-31 3:45 ` Guenter Roeck
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