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>,
Russell King <rmk+kernel@armlinux.org.uk>,
Russell King <rmk+kernel@arm.linux.org.uk>
Subject: [PATCH 4.4 06/20] ARM: 8643/3: arm/ptrace: Preserve previous registers for short regset write
Date: Mon, 13 Feb 2017 05:04:51 -0800 [thread overview]
Message-ID: <20170213130403.799490070@linuxfoundation.org> (raw)
In-Reply-To: <20170213130403.531813333@linuxfoundation.org>
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dave Martin <Dave.Martin@arm.com>
commit 228dbbfb5d77f8e047b2a1d78da14b7158433027 upstream.
Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.
Fixes: 5be6f62b0059 ("ARM: 6883/1: ptrace: Migrate to regsets framework")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm/kernel/ptrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -600,7 +600,7 @@ static int gpr_set(struct task_struct *t
const void *kbuf, const void __user *ubuf)
{
int ret;
- struct pt_regs newregs;
+ struct pt_regs newregs = *task_pt_regs(target);
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
&newregs,
next prev parent reply other threads:[~2017-02-13 13:05 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-13 13:04 [PATCH 4.4 00/20] 4.4.49-stable review Greg Kroah-Hartman
2017-02-13 13:04 ` [PATCH 4.4 01/20] ARC: [arcompact] brown paper bag bug in unaligned access delay slot fixup Greg Kroah-Hartman
2017-02-13 13:04 ` Greg Kroah-Hartman
2017-02-13 13:04 ` [PATCH 4.4 02/20] selinux: fix off-by-one in setprocattr Greg Kroah-Hartman
2017-02-13 13:04 ` [PATCH 4.4 03/20] Revert "x86/ioapic: Restore IO-APIC irq_chip retrigger callback" Greg Kroah-Hartman
2017-02-13 13:04 ` [PATCH 4.4 04/20] cpumask: use nr_cpumask_bits for parsing functions Greg Kroah-Hartman
2017-02-13 13:04 ` [PATCH 4.4 05/20] hns: avoid stack overflow with CONFIG_KASAN Greg Kroah-Hartman
2017-02-13 13:04 ` Greg Kroah-Hartman [this message]
2017-02-13 13:04 ` [PATCH 4.4 07/20] target: Dont BUG_ON during NodeACL dynamic -> explicit conversion Greg Kroah-Hartman
2017-02-13 13:04 ` [PATCH 4.4 08/20] target: Use correct SCSI status during EXTENDED_COPY exception Greg Kroah-Hartman
2017-02-13 13:04 ` [PATCH 4.4 09/20] target: Fix early transport_generic_handle_tmr abort scenario Greg Kroah-Hartman
2017-02-13 13:04 ` [PATCH 4.4 10/20] target: Fix COMPARE_AND_WRITE ref leak for non GOOD status Greg Kroah-Hartman
2017-02-13 13:04 ` [PATCH 4.4 11/20] ARM: 8642/1: LPAE: catch pending imprecise abort on unmask Greg Kroah-Hartman
2017-02-13 13:04 ` Greg Kroah-Hartman
2017-02-13 13:04 ` [PATCH 4.4 12/20] mac80211: Fix adding of mesh vendor IEs Greg Kroah-Hartman
2017-02-13 13:04 ` [PATCH 4.4 13/20] [PATCH] netvsc: Set maximum GSO size in the right place Greg Kroah-Hartman
2017-02-13 13:04 ` [PATCH 4.4 14/20] scsi: zfcp: fix use-after-free by not tracing WKA port open/close on failed send Greg Kroah-Hartman
2017-02-13 13:05 ` [PATCH 4.4 15/20] scsi: aacraid: Fix INTx/MSI-x issue with older controllers Greg Kroah-Hartman
2017-02-13 13:05 ` [PATCH 4.4 16/20] scsi: mpt3sas: disable ASPM for MPI2 controllers Greg Kroah-Hartman
2017-02-13 13:05 ` [PATCH 4.4 17/20] xen-netfront: Delete rx_refill_timer in xennet_disconnect_backend() Greg Kroah-Hartman
2017-02-13 13:05 ` [PATCH 4.4 18/20] ALSA: seq: Fix race at creating a queue Greg Kroah-Hartman
2017-02-13 13:05 ` [PATCH 4.4 19/20] ALSA: seq: Dont handle loop timeout at snd_seq_pool_done() Greg Kroah-Hartman
2017-02-13 13:05 ` [PATCH 4.4 20/20] drm/i915: fix use-after-free in page_flip_completed() Greg Kroah-Hartman
2017-02-13 17:09 ` [PATCH 4.4 00/20] 4.4.49-stable review Shuah Khan
2017-02-13 20:04 ` Guenter Roeck
2017-02-15 11:41 ` Sudip Mukherjee
2017-02-15 16:36 ` Greg Kroah-Hartman
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