From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, "Maciej W. Rozycki" <macro@mips.com>,
Ralf Baechle <ralf@linux-mips.org>,
linux-mips@linux-mips.org, James Hogan <jhogan@kernel.org>
Subject: [PATCH 4.4 26/37] MIPS: ptrace: Fix PTRACE_PEEKUSR requests for 64-bit FGRs
Date: Tue, 5 Jun 2018 19:01:31 +0200 [thread overview]
Message-ID: <20180605170110.400512984@linuxfoundation.org> (raw)
In-Reply-To: <20180605170108.884872354@linuxfoundation.org>
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Maciej W. Rozycki <macro@mips.com>
commit c7e814628df65f424fe197dde73bfc67e4a244d7 upstream.
Use 64-bit accesses for 64-bit floating-point general registers with
PTRACE_PEEKUSR, removing the truncation of their upper halves in the
FR=1 mode, caused by commit bbd426f542cb ("MIPS: Simplify FP context
access"), which inadvertently switched them to using 32-bit accesses.
The PTRACE_POKEUSR side is fine as it's never been broken and continues
using 64-bit accesses.
Fixes: bbd426f542cb ("MIPS: Simplify FP context access")
Signed-off-by: Maciej W. Rozycki <macro@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 3.15+
Patchwork: https://patchwork.linux-mips.org/patch/19334/
Signed-off-by: James Hogan <jhogan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/mips/kernel/ptrace.c | 2 +-
arch/mips/kernel/ptrace32.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -841,7 +841,7 @@ long arch_ptrace(struct task_struct *chi
break;
}
#endif
- tmp = get_fpr32(&fregs[addr - FPR_BASE], 0);
+ tmp = get_fpr64(&fregs[addr - FPR_BASE], 0);
break;
case PC:
tmp = regs->cp0_epc;
--- a/arch/mips/kernel/ptrace32.c
+++ b/arch/mips/kernel/ptrace32.c
@@ -107,7 +107,7 @@ long compat_arch_ptrace(struct task_stru
addr & 1);
break;
}
- tmp = get_fpr32(&fregs[addr - FPR_BASE], 0);
+ tmp = get_fpr64(&fregs[addr - FPR_BASE], 0);
break;
case PC:
tmp = regs->cp0_epc;
next prev parent reply other threads:[~2018-06-05 17:03 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-05 17:01 [PATCH 4.4 00/37] 4.4.136-stable review Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 01/37] arm64: lse: Add early clobbers to some input/output asm operands Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 02/37] powerpc/64s: Clear PCR on boot Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 03/37] USB: serial: cp210x: use tcflag_t to fix incompatible pointer type Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 04/37] sh: New gcc support Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 05/37] xfs: detect agfl count corruption and reset agfl Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 06/37] Revert "ima: limit file hash setting by user to fix and log modes" Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 07/37] Input: elan_i2c_smbus - fix corrupted stack Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 08/37] tracing: Fix crash when freeing instances with event triggers Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 09/37] selinux: KASAN: slab-out-of-bounds in xattr_getsecurity Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 10/37] cfg80211: further limit wiphy names to 64 bytes Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 11/37] rtlwifi: rtl8192cu: Remove variable self-assignment in rf.c Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 12/37] ASoC: Intel: sst: remove redundant variable dma_dev_name Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 13/37] irda: fix overly long udelay() Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 14/37] tcp: avoid integer overflows in tcp_rcv_space_adjust() Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 15/37] i2c: rcar: make sure clocks are on when doing clock calculation Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 16/37] i2c: rcar: rework hw init Greg Kroah-Hartman
2018-06-18 18:46 ` Ben Hutchings
2018-06-25 10:05 ` Fabrizio Castro
2018-06-05 17:01 ` [PATCH 4.4 17/37] i2c: rcar: remove unused IOERROR state Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 18/37] i2c: rcar: remove spinlock Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 19/37] i2c: rcar: refactor setup of a msg Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 20/37] i2c: rcar: init new messages in irq Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 21/37] i2c: rcar: dont issue stop when HW does it automatically Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 22/37] i2c: rcar: check master irqs before slave irqs Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 23/37] i2c: rcar: revoke START request early Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 24/37] dmaengine: usb-dmac: fix endless loop in usb_dmac_chan_terminate_all() Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 25/37] iio:kfifo_buf: check for uint overflow Greg Kroah-Hartman
2018-06-05 17:01 ` Greg Kroah-Hartman [this message]
2018-06-05 17:01 ` [PATCH 4.4 27/37] MIPS: prctl: Disallow FRE without FR with PR_SET_FP_MODE requests Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 28/37] scsi: scsi_transport_srp: Fix shost to rport translation Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 29/37] stm class: Use vmalloc for the master map Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 30/37] hwtracing: stm: fix build error on some arches Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 32/37] Kbuild: change CC_OPTIMIZE_FOR_SIZE definition Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 33/37] fix io_destroy()/aio_complete() race Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 34/37] mm: fix the NULL mapping case in __isolate_lru_page() Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 35/37] sparc64: Add __multi3 for gcc 7.x and later Greg Kroah-Hartman
2018-06-05 17:01 ` [PATCH 4.4 36/37] sparc64: Dont clibber fixed registers in __multi4 Greg Kroah-Hartman
2018-06-05 21:59 ` [PATCH 4.4 00/37] 4.4.136-stable review Shuah Khan
2018-06-06 0:30 ` Nathan Chancellor
2018-06-06 8:19 ` Greg Kroah-Hartman
2018-06-06 11:18 ` Naresh Kamboju
2018-06-06 12:15 ` Greg Kroah-Hartman
2018-06-06 13:28 ` Guenter Roeck
2018-06-06 13:31 ` Greg Kroah-Hartman
2018-06-06 15:01 ` Guenter Roeck
2018-06-06 15:35 ` Greg Kroah-Hartman
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