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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sami Tolvanen <samitolvanen@google.com>,
	Kees Cook <keescook@chromium.org>,
	Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 5.4 20/33] x86, build: use objtool mcount
Date: Tue,  2 Mar 2021 06:57:36 -0500	[thread overview]
Message-ID: <20210302115749.62653-20-sashal@kernel.org> (raw)
In-Reply-To: <20210302115749.62653-1-sashal@kernel.org>

From: Sami Tolvanen <samitolvanen@google.com>

[ Upstream commit 6dafca97803309c3cb5148d449bfa711e41ddef2 ]

Select HAVE_OBJTOOL_MCOUNT if STACK_VALIDATION is selected to use
objtool to generate __mcount_loc sections for dynamic ftrace with
Clang and gcc <5 (later versions of gcc use -mrecord-mcount).

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 8ef85139553f..8523579feced 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -154,6 +154,7 @@ config X86
 	select HAVE_CONTEXT_TRACKING		if X86_64
 	select HAVE_COPY_THREAD_TLS
 	select HAVE_C_RECORDMCOUNT
+	select HAVE_OBJTOOL_MCOUNT		if STACK_VALIDATION
 	select HAVE_DEBUG_KMEMLEAK
 	select HAVE_DMA_CONTIGUOUS
 	select HAVE_DYNAMIC_FTRACE
-- 
2.30.1


  parent reply	other threads:[~2021-03-03  0:48 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-02 11:57 [PATCH AUTOSEL 5.4 01/33] i2c: rcar: faster irq code to minimize HW race condition Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 02/33] i2c: rcar: optimize cacheline " Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 03/33] udf: fix silent AED tagLocation corruption Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 04/33] mmc: mxs-mmc: Fix a resource leak in an error handling path in 'mxs_mmc_probe()' Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 05/33] mmc: sdhci-of-dwcmshc: set SDHCI_QUIRK2_PRESET_VALUE_BROKEN Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 06/33] mmc: mediatek: fix race condition between msdc_request_timeout and irq Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 07/33] Platform: OLPC: Fix probe error handling Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 08/33] powerpc/pci: Add ppc_md.discover_phbs() Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 09/33] HID: i2c-hid: Add I2C_HID_QUIRK_NO_IRQ_AFTER_RESET for ITE8568 EC on Voyo Winpad A15 Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 10/33] spi: stm32: make spurious and overrun interrupts visible Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 11/33] powerpc: improve handling of unrecoverable system reset Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 12/33] powerpc/perf: Record counter overflow always if SAMPLE_IP is unset Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 13/33] HID: logitech-dj: add support for the new lightspeed connection iteration Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 14/33] powerpc/64: Fix stack trace not displaying final frame Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 15/33] iommu/amd: Fix performance counter initialization Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 16/33] sparc32: Limit memblock allocation to low memory Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 17/33] sparc64: Use arch_validate_flags() to validate ADI flag Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 18/33] ACPICA: Fix race in generic_serial_bus (I2C) and GPIO op_region parameter handling Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 19/33] Input: applespi - don't wait for responses to commands indefinitely Sasha Levin
2021-03-02 11:57 ` Sasha Levin [this message]
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 21/33] PCI: xgene-msi: Fix race in installing chained irq handler Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 22/33] misc: eeprom_93xx46: Add quirk to support Microchip 93LC46B eeprom Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 23/33] PCI: mediatek: Add missing of_node_put() to fix reference leak Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 24/33] drm/msm/a5xx: Remove overwriting A5XX_PC_DBG_ECO_CNTL register Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 25/33] kbuild: clamp SUBLEVEL to 255 Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 26/33] PCI: Fix pci_register_io_range() memory leak Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 27/33] i40e: Fix memory leak in i40e_probe Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 28/33] s390/smp: __smp_rescan_cpus() - move cpumask away from stack Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 29/33] sysctl.c: fix underflow value setting risk in vm_table Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 30/33] scsi: libiscsi: Fix iscsi_prep_scsi_cmd_pdu() error handling Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 31/33] nbd: handle device refs for DESTROY_ON_DISCONNECT properly Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 32/33] scsi: target: core: Add cmd length set before cmd complete Sasha Levin
2021-03-02 11:57 ` [PATCH AUTOSEL 5.4 33/33] scsi: target: core: Prevent underflow for service actions Sasha Levin

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