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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: YuanJunQing <yuanjunqing66@163.com>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	Sasha Levin <sashal@kernel.org>,
	linux-mips@vger.kernel.org
Subject: [PATCH AUTOSEL 4.4 32/37] MIPS: Fix IRQ tracing when call handle_fpe() and handle_msa_fpe()
Date: Mon,  8 Jun 2020 19:27:44 -0400	[thread overview]
Message-ID: <20200608232750.3370747-32-sashal@kernel.org> (raw)
In-Reply-To: <20200608232750.3370747-1-sashal@kernel.org>

From: YuanJunQing <yuanjunqing66@163.com>

[ Upstream commit 31e1b3efa802f97a17628dde280006c4cee4ce5e ]

Register "a1" is unsaved in this function,
 when CONFIG_TRACE_IRQFLAGS is enabled,
 the TRACE_IRQS_OFF macro will call trace_hardirqs_off(),
 and this may change register "a1".
 The changed register "a1" as argument will be send
 to do_fpe() and do_msa_fpe().

Signed-off-by: YuanJunQing <yuanjunqing66@163.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/mips/kernel/genex.S | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S
index bb72f3ce7e29..7ffd158de76e 100644
--- a/arch/mips/kernel/genex.S
+++ b/arch/mips/kernel/genex.S
@@ -430,20 +430,20 @@ NESTED(nmi_handler, PT_SIZE, sp)
 	.endm
 
 	.macro	__build_clear_fpe
+	CLI
+	TRACE_IRQS_OFF
 	.set	push
 	/* gas fails to assemble cfc1 for some archs (octeon).*/ \
 	.set	mips1
 	SET_HARDFLOAT
 	cfc1	a1, fcr31
 	.set	pop
-	CLI
-	TRACE_IRQS_OFF
 	.endm
 
 	.macro	__build_clear_msa_fpe
-	_cfcmsa	a1, MSA_CSR
 	CLI
 	TRACE_IRQS_OFF
+	_cfcmsa	a1, MSA_CSR
 	.endm
 
 	.macro	__build_clear_ade
-- 
2.25.1


  parent reply	other threads:[~2020-06-08 23:37 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-08 23:27 [PATCH AUTOSEL 4.4 01/37] ath9x: Fix stack-out-of-bounds Write in ath9k_hif_usb_rx_cb Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 02/37] ath9k: Fix use-after-free Write in ath9k_htc_rx_msg Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 03/37] spi: dw: Zero DMA Tx and Rx configurations on stack Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 04/37] Bluetooth: Add SCO fallback for invalid LMP parameters error Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 05/37] kgdb: Prevent infinite recursive entries to the debugger Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 06/37] spi: dw: Enable interrupts in accordance with DMA xfer mode Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 07/37] clocksource: dw_apb_timer_of: Fix missing clockevent timers Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 08/37] btrfs: do not ignore error from btrfs_next_leaf() when inserting checksums Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 09/37] ARM: 8978/1: mm: make act_mm() respect THREAD_SIZE Sasha Levin
2020-06-08 23:27   ` Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 10/37] net: vmxnet3: fix possible buffer overflow caused by bad DMA value in vmxnet3_get_rss() Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 11/37] staging: android: ion: use vmap instead of vm_map_ram Sasha Levin
2020-06-08 23:27   ` Sasha Levin
2020-06-08 23:27   ` Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 12/37] ath9k: Fix use-after-free Read in ath9k_wmi_ctrl_rx Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 13/37] ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 14/37] e1000: Distribute switch variables for initialization Sasha Levin
2020-06-08 23:27   ` [Intel-wired-lan] " Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 15/37] media: dvb: return -EREMOTEIO on i2c transfer failure Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 16/37] MIPS: Make sparse_init() using top-down allocation Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 17/37] netfilter: nft_nat: return EOPNOTSUPP if type or flags are not supported Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 18/37] lib/mpi: Fix 64-bit MIPS build with Clang Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 19/37] net: lpc-enet: fix error return code in lpc_mii_init() Sasha Levin
2020-06-08 23:27   ` Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 20/37] net: allwinner: Fix use correct return type for ndo_start_xmit() Sasha Levin
2020-06-08 23:27   ` Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 21/37] powerpc/spufs: fix copy_to_user while atomic Sasha Levin
2020-06-08 23:27   ` Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 22/37] ath9k_htc: Silence undersized packet warnings Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 23/37] mips: cm: Fix an invalid error code of INTVN_*_ERR Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 24/37] kgdb: Fix spurious true from in_dbg_master() Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 25/37] md: don't flush workqueue unconditionally in md_open Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 26/37] mwifiex: Fix memory corruption in dump_station Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 27/37] mips: Add udelay lpj numbers adjustment Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 28/37] x86/mm: Stop printing BRK addresses Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 29/37] m68k: mac: Don't call via_flush_cache() on Mac IIfx Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 30/37] macvlan: Skip loopback packets in RX handler Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 31/37] PCI: Don't disable decoding when mmio_always_on is set Sasha Levin
2020-06-08 23:27 ` Sasha Levin [this message]
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 33/37] xfs: gut error handling in xfs_trans_unreserve_and_mod_sb() Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 34/37] ixgbe: fix signed-integer-overflow warning Sasha Levin
2020-06-08 23:27   ` [Intel-wired-lan] " Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 35/37] spi: dw: Return any value retrieved from the dma_transfer callback Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 36/37] cpuidle: Fix three reference count leaks Sasha Levin
2020-06-08 23:27 ` [PATCH AUTOSEL 4.4 37/37] vxlan: Avoid infinite loop when suppressing NS messages with invalid options Sasha Levin

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