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1. Remove old Kconfig options from all ARM configs,
2. Update Samsung defconfigs to bring back options over time got disabled
for some reason (configs were not updated along with the code),
3. Save defconfigs for Samsung.
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Merge tag 'samsung-defconfig-4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/defconfig
Pull "ARM defconfig cleanup" from Krzysztof Kozłowski:
1. Remove old Kconfig options from all ARM configs,
2. Update Samsung defconfigs to bring back options over time got disabled
for some reason (configs were not updated along with the code),
3. Save defconfigs for Samsung.
* tag 'samsung-defconfig-4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
ARM: tct_hammer_defconfig: Save defconfig
ARM: s5pv210_defconfig: Save defconfig
ARM: s3c6400_defconfig: Save defconfig
ARM: mini2440_defconfig: Save defconfig
ARM: s3c2410_defconfig: Save defconfig
ARM: exynos_defconfig: Save defconfig
ARM: s5pv210_defconfig: Bring back lost (but wanted) options
ARM: s3c6400_defconfig: Bring back lost (but wanted) options
ARM: s3c2410_defconfig: Bring back lost (but wanted) options
ARM: tct_hammer_defconfig: Bring back lost (but wanted) options
ARM: mini2440_defconfig: Bring back lost (but wanted) options
ARM: defconfig: samsung: Re-order entries to match savedefconfig
ARM: defconfig: Cleanup from old Kconfig options
- Enable i.MX7 ADC driver support.
- Enable THERMAL_WRITABLE_TRIPS, so that i.MX thermal driver can set
trip points for testing.
- CONFIG_DEBUG_FS gets lost by accident because of a change around
CONFIG_RCU_TRACE. Re-enable it explicitly.
- Enable MXS LRADC driver and CONFIG_CGROUPS for mxs_defconfig.
- Enable more common cpufreq governors to help test cpufreq driver.
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Merge tag 'imx-defconfig-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/defconfig
The i.MX defconfig updates for 4.13:
- Enable i.MX7 ADC driver support.
- Enable THERMAL_WRITABLE_TRIPS, so that i.MX thermal driver can set
trip points for testing.
- CONFIG_DEBUG_FS gets lost by accident because of a change around
CONFIG_RCU_TRACE. Re-enable it explicitly.
- Enable MXS LRADC driver and CONFIG_CGROUPS for mxs_defconfig.
- Enable more common cpufreq governors to help test cpufreq driver.
* tag 'imx-defconfig-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: imx_v6_v7_defconfig: Select CONFIG_IMX7D_ADC
ARM: imx_v6_v7_defconfig: Set THERMAL_WRITABLE_TRIPS=y for testing
ARM: imx_v6_v7_defconfig: Explicitly restore CONFIG_DEBUG_FS
ARM: mxs_defconfig: Re-enable MXS LRADC
ARM: mxs_defconfig: Enable CONFIG_CGROUPS
ARM: imx_v6_v7_defconfig: Enable cpufreq governors
Signed-off-by: Olof Johansson <olof@lixom.net>
Enable the SENSORS_PWM_FAN in mvebu_v7_defconfig support by gpio
driver since the previous release
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Merge tag 'mvebu-defconfig-4.13-1' of git://git.infradead.org/linux-mvebu into next/defconfig
mvebu defconfig for 4.13
Enable the SENSORS_PWM_FAN in mvebu_v7_defconfig support by gpio
driver since the previous release
* tag 'mvebu-defconfig-4.13-1' of git://git.infradead.org/linux-mvebu:
ARM: mvebu: Enable SENSORS_PWM_FAN in defconfig
Signed-off-by: Olof Johansson <olof@lixom.net>
- Switch sama5 to be tickless in idle and enable hrtimer
- Add MCAN
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Merge tag 'at91-ab-4.13-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux into next/defconfig
defconfig for 4.13:
- Switch sama5 to be tickless in idle and enable hrtimer
- Add MCAN
* tag 'at91-ab-4.13-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
ARM: configs: at91: add MCAN driver to sama5_defconfig
ARM: configs: at91: enable HIGH_RES_TIMERS
ARM: configs: at91: make system tickless when idle
Signed-off-by: Olof Johansson <olof@lixom.net>
please pull the following:
- Stefan updates the bcm2835_defconfig to include serial, Ethernet and USB
gadget support which is needed for the Raspberry Pi Zero OTG changes
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Merge tag 'arm-soc/for-4.13/defconfig' of http://github.com/Broadcom/stblinux into next/defconfig
This pull request contains Broadcom ARM-based SoCs defconfig updates for 4.13,
please pull the following:
- Stefan updates the bcm2835_defconfig to include serial, Ethernet and USB
gadget support which is needed for the Raspberry Pi Zero OTG changes
* tag 'arm-soc/for-4.13/defconfig' of http://github.com/Broadcom/stblinux:
ARM: bcm2835_defconfig: Enable serial & ethernet USB gadget support
Signed-off-by: Olof Johansson <olof@lixom.net>
1. Enable Exynos PRNG along with user-space crypto API.
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Merge tag 'samsung-defconfig-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/defconfig
Samsung defconfig ARM update for v4.13:
1. Enable Exynos PRNG along with user-space crypto API.
* tag 'samsung-defconfig-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
ARM: multi_v7_defconfig: Enable Exynos RNG and user-space crypto API
ARM: exynos_defconfig: Enable Exynos RNG and user-space crypto API
Signed-off-by: Olof Johansson <olof@lixom.net>
CPPI 4.1 DMA for MUSB, some commonly used USB devices, and
Lego Mindstorms EV3 battery driver.
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Merge tag 'davinci-for-v4.13/defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/defconfig
Re-sync of davinci_all_defconfig with savedefconfig and enable
CPPI 4.1 DMA for MUSB, some commonly used USB devices, and
Lego Mindstorms EV3 battery driver.
* tag 'davinci-for-v4.13/defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: davinci_all_defconfig: Enable CPPI 4.1 USB OTG DMA
ARM: davinci_all_defconfig: enable USB audio/video device support
ARM: davinci_all_defconfig: cleanup with savedefconfig
ARM: davinci_all_defconfig: enable LEGO MINDSTORMS EV3 battery module
Signed-off-by: Olof Johansson <olof@lixom.net>
Select CONFIG_IMX7D_ADC so that the i.MX7 ADC driver can be
built by default.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Now that the GPIO driver also supports PWM operation, enable the PWM
framework and fan driver in mvebu_v7_defconfig.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
URL: https://patchwork.ozlabs.org/patch/427297/
[Ralph Sennhauser: add fan driver to defconfig]
Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
mtdtests module has some useful tests to verify that
mtd drivers like davinci_nand are working correctly.
Enable it in davinci_all_defconfig to make testing and
debug easier.
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Setting trip points is supported by the imx thermal driver and it is
useful to be able to test this without adjusting config.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
In order to use the serial and ethernet USB gadget support on
Raspberry Zero, we also need to enable the PHY driver, kernel module
and OTG support.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Generate new defconfig to get rid of obsolete Kconfig entries:
- BUGVERBOSE was changed into DEBUG_BUGVERBOSE and will be enabled by
default (it is useful);
- DETECT_SOFTLOCKUP was changed into LOCKUP_DETECTOR;
- rest of entries is being removed by default values;
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Generate new defconfig to get rid of obsolete Kconfig entries:
- S3C_LOWLEVEL_UART_PORT and S3C_DEV_FB are invalid for S5P;
- S5PV210_SETUP_FB_24BPP is gone;
- rest of entries is being removed by default values;
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Generate new defconfig to get rid of obsolete Kconfig entries:
- S3C_BOOT_ERROR_RESET, SND_S3C24XX_SOC and SND_SOC_SMDK_WM9713 are
gone;
- rest of entries is being removed by default values;
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Generate new defconfig to get rid of obsolete Kconfig entries:
- NET_ETHERNET, SND_S3C24XX_SOC are gone;
- CRYPTO_FIPS is changed to no (cannot be part of module);
- BINFMT_AOUT cannot be selected anymore;
- rest of entries is being removed by default values;
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Generate new defconfig to get rid of obsolete Kconfig entries:
- S3C_BOOT_ERROR_RESET, SMDK2440_CPU2442 are gone;
- ARM_THUMB is changed to yes (selected by default);
- BINFMT_AOUT cannot be selected anymore;
- rest of entries is being removed by default values;
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Generate new defconfig to get rid of obsolete Kconfig entries:
- RFKILL_REGULATOR is gone;
- COMMON_CLK_MAX77802 was merged into COMMON_CLK_MAX77686;
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
The config was not updated for some time so it needs updates to get the
same options as wanted initially:
- SYSFS_DEPRECATED is now needed for SYSFS_DEPRECATED_V2;
- DEBUG_SPINLOCK_SLEEP was replaced by DEBUG_ATOMIC_SLEEP;
- Use proper DEBUG_S3C_UART1 for UART1;
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
The config was not updated for some time so it needs updates to get the
same options as wanted initially:
- SYSFS_DEPRECATED is now needed for SYSFS_DEPRECATED_V2;
- PWM is now needed for BACKLIGHT_PWM;
- DEBUG_SPINLOCK_SLEEP was replaced by DEBUG_ATOMIC_SLEEP;
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
The config was not updated for some time so it needs updates to get the
same options as wanted initially:
- IP_NF_TARGET_LOG was replaced by NETFILTER_XT_TARGET_LOG;
- NF_NAT was replaced by IP_NF_NAT;
- SERIAL_DEV_BUS is now needed for BT_HCIUART_LL;
- TPS65010 is now needed for MACH_OSIRIS_DVS;
- DMADEVICES and S3C24XX_DMAC are now needed for MMC_S3C;
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
The config was not updated for some time so it needs updates to get the
same options as wanted initially:
- SYSFS_DEPRECATED is now needed for SYSFS_DEPRECATED_V2;
- USB_GADGET_S3C2410 was replaced by USB_S3C2410;
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
The config was not updated for some time so it needs updates to get the
same options as wanted initially:
- SERIAL_DEV_BUS is now needed for BT_HCIUART_LL;
- USB_GADGET_S3C2410 was replaced by USB_S3C2410;
- S3C24XX_DMAC is now needed for MMC_S3C;
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Re-order entries just like savedefconfig would do so it will be easier
to review the changes before actual savedefconfig.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
These configs are required for booting kernel in QCOM IPQ4019 boards.
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
This option was removed by "make savedefconfig" in
commit c5054a98bce4 ("ARM: imx_v6_v7_defconfig: Select SMSC_PHY")
This happened because CONFIG_DEBUG_FS was implicitly selected by
CONFIG_TREE_RCU_TRACE which defaulted to true because CONFIG_RCU_TRACE
was enabled by default by commit 961518259b3b ("rcu: Enable RCU
tracepoints by default to aid in debugging")
Recently however CONFIG_RCU_TRACE was completely removed by
commit 6e74c237c410 ("rcu: Remove debugfs tracing")
The result is that imx_v6_v7_defconfig no longer includes DEBUG_FS on
linux-next since next-20170517. This is bad, DEBUG_FS is extremely
useful for kernel introspection and testing.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
CPPI 4.1 DMA is now supported on AM18xx.
Update the config to use it instead of PIO mode.
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Pull thermal SoC management fixes from Eduardo Valentin:
- fixes to TI SoC driver, Broadcom, qoriq
- small sparse warning fix on thermal core
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
thermal: broadcom: ns-thermal: default on iProc SoCs
ti-soc-thermal: Fix a typo in a comment line
ti-soc-thermal: Delete error messages for failed memory allocations in ti_bandgap_build()
ti-soc-thermal: Use devm_kcalloc() in ti_bandgap_build()
thermal: core: make thermal_emergency_poweroff static
thermal: qoriq: remove useless call for of_thermal_get_trip_points()
Here are some serial and tty fixes for 4.12-rc3. They are a bit
"bigger" than normal, which is why I had them "bake" in linux-next for a
few weeks and didn't send them to you for -rc2.
They revert a few of the serdev patches from 4.12-rc1, and bring things
back to how they were in 4.11, to try to make things a bit more stable
there. Rob and Johan both agree that this is the way forward, so this
isn't people squabbling over semantics. Other than that, just a few
minor serial driver fixes that people have had problems with.
All of these have been in linux-next for a few weeks with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some serial and tty fixes for 4.12-rc3. They are a bit bigger
than normal, which is why I had them bake in linux-next for a few
weeks and didn't send them to you for -rc2.
They revert a few of the serdev patches from 4.12-rc1, and bring
things back to how they were in 4.11, to try to make things a bit more
stable there. Rob and Johan both agree that this is the way forward,
so this isn't people squabbling over semantics. Other than that, just
a few minor serial driver fixes that people have had problems with.
All of these have been in linux-next for a few weeks with no reported
issues"
* tag 'tty-4.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: altera_uart: call iounmap() at driver remove
serial: imx: ensure UCR3 and UFCR are setup correctly
MAINTAINERS/serial: Change maintainer of jsm driver
serial: enable serdev support
tty/serdev: add serdev registration interface
serdev: Restore serdev_device_write_buf for atomic context
serial: core: fix crash in uart_suspend_port
tty: fix port buffer locking
tty: ehv_bytechan: clean up init error handling
serial: ifx6x60: fix use-after-free on module unload
serial: altera_jtaguart: adding iounmap()
serial: exar: Fix stuck MSIs
serial: efm32: Fix parity management in 'efm32_uart_console_get_options()'
serdev: fix tty-port client deregistration
Revert "tty_port: register tty ports with serdev bus"
drivers/tty: 8250: only call fintek_8250_probe when doing port I/O
Fix running SPU programs on Cell, and a few other minor fixes.
Thanks to:
Alistair Popple, Jeremy Kerr, Michael Neuling, Nicholas Piggin.
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Merge tag 'powerpc-4.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Fix running SPU programs on Cell, and a few other minor fixes.
Thanks to Alistair Popple, Jeremy Kerr, Michael Neuling, Nicholas
Piggin"
* tag 'powerpc-4.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Add PPC_FEATURE userspace bits for SCV and DARN instructions
powerpc/spufs: Fix hash faults for kernel regions
powerpc: Fix booting P9 hash with CONFIG_PPC_RADIX_MMU=N
powerpc/powernv/npu-dma.c: Fix opal_npu_destroy_context() call
selftests/powerpc: Fix TM resched DSCR test with some compilers
Pull x86 fixes from Thomas Gleixner:
"A series of fixes for X86:
- The final fix for the end-of-stack issue in the unwinder
- Handle non PAT systems gracefully
- Prevent access to uninitiliazed memory
- Move early delay calaibration after basic init
- Fix Kconfig help text
- Fix a cross compile issue
- Unbreak older make versions"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/timers: Move simple_udelay_calibration past init_hypervisor_platform
x86/alternatives: Prevent uninitialized stack byte read in apply_alternatives()
x86/PAT: Fix Xorg regression on CPUs that don't support PAT
x86/watchdog: Fix Kconfig help text file path reference to lockup watchdog documentation
x86/build: Permit building with old make versions
x86/unwind: Add end-of-stack check for ftrace handlers
Revert "x86/entry: Fix the end of the stack for newly forked tasks"
x86/boot: Use CROSS_COMPILE prefix for readelf
Pull timer fixlet from Thomas Gleixner:
"Silence dmesg spam by making the posix cpu timer printks depend on
print_fatal_signals"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
posix-timers: Make signal printks conditional
Pull RAS fixes from Thomas Gleixner:
"Two fixlets for RAS:
- Export memory_error() so the NFIT module can utilize it
- Handle memory errors in NFIT correctly"
* 'ras-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
acpi, nfit: Fix the memory error check in nfit_handle_mce()
x86/MCE: Export memory_error()
Pull perf tooling fixes from Thomas Gleixner:
- Synchronization of tools and kernel headers
- A series of fixes for perf report addressing various failures:
* Handle invalid maps proper
* Plug a memory leak
* Handle frames and callchain order correctly
- Fixes for handling inlines and children mode
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tools/include: Sync kernel ABI headers with tooling headers
perf tools: Put caller above callee in --children mode
perf report: Do not drop last inlined frame
perf report: Always honor callchain order for inlined nodes
perf script: Add --inline option for debugging
perf report: Fix off-by-one for non-activation frames
perf report: Fix memory leak in addr2line when called by addr2inlines
perf report: Don't crash on invalid maps in `-g srcline` mode
Pull locking fix from Thomas Gleixner:
"A fix for a state leak which was introduced in the recent rework of
futex/rtmutex interaction"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex,rt_mutex: Fix rt_mutex_cleanup_proxy_lock()
Pull kthread fix from Thomas Gleixner:
"A single fix which prevents a use after free when kthread fork fails"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
kthread: Fix use-after-free if kthread fork fails
One was simply a memory leak where not all was being freed that should
have been in releasing a file pointer on set_graph_function.
Then Thomas found that the ftrace trampolines were marked for read/write
as well as execute. To shrink the possible attack surface, he added
calls to set them to ro. Which also uncovered some other issues with
freeing module allocated memory that had its permissions changed.
Kprobes had a similar issue which is fixed and a selftest was added
to trigger that issue again.
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Merge tag 'trace-v4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull ftrace fixes from Steven Rostedt:
"There's been a few memory issues found with ftrace.
One was simply a memory leak where not all was being freed that should
have been in releasing a file pointer on set_graph_function.
Then Thomas found that the ftrace trampolines were marked for
read/write as well as execute. To shrink the possible attack surface,
he added calls to set them to ro. Which also uncovered some other
issues with freeing module allocated memory that had its permissions
changed.
Kprobes had a similar issue which is fixed and a selftest was added to
trigger that issue again"
* tag 'trace-v4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
x86/ftrace: Make sure that ftrace trampolines are not RWX
x86/mm/ftrace: Do not bug in early boot on irqs_disabled in cpu_flush_range()
selftests/ftrace: Add a testcase for many kprobe events
kprobes/x86: Fix to set RWX bits correctly before releasing trampoline
ftrace: Fix memory leak in ftrace_graph_release()
ftrace use module_alloc() to allocate trampoline pages. The mapping of
module_alloc() is RWX, which makes sense as the memory is written to right
after allocation. But nothing makes these pages RO after writing to them.
Add proper set_memory_rw/ro() calls to protect the trampolines after
modification.
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1705251056410.1862@nanos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
With function tracing starting in early bootup and having its trampoline
pages being read only, a bug triggered with the following:
kernel BUG at arch/x86/mm/pageattr.c:189!
invalid opcode: 0000 [#1] SMP
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 4.12.0-rc2-test+ #3
Hardware name: MSI MS-7823/CSM-H87M-G43 (MS-7823), BIOS V1.6 02/22/2014
task: ffffffffb4222500 task.stack: ffffffffb4200000
RIP: 0010:change_page_attr_set_clr+0x269/0x302
RSP: 0000:ffffffffb4203c88 EFLAGS: 00010046
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 00000001b6000000
RDX: ffffffffb4203d40 RSI: 0000000000000000 RDI: ffffffffb4240d60
RBP: ffffffffb4203d18 R08: 00000001b6000000 R09: 0000000000000001
R10: ffffffffb4203aa8 R11: 0000000000000003 R12: ffffffffc029b000
R13: ffffffffb4203d40 R14: 0000000000000001 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff9a639ea00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff9a636b384000 CR3: 00000001ea21d000 CR4: 00000000000406b0
Call Trace:
change_page_attr_clear+0x1f/0x21
set_memory_ro+0x1e/0x20
arch_ftrace_update_trampoline+0x207/0x21c
? ftrace_caller+0x64/0x64
? 0xffffffffc029b000
ftrace_startup+0xf4/0x198
register_ftrace_function+0x26/0x3c
function_trace_init+0x5e/0x73
tracer_init+0x1e/0x23
tracing_set_tracer+0x127/0x15a
register_tracer+0x19b/0x1bc
init_function_trace+0x90/0x92
early_trace_init+0x236/0x2b3
start_kernel+0x200/0x3f5
x86_64_start_reservations+0x29/0x2b
x86_64_start_kernel+0x17c/0x18f
secondary_startup_64+0x9f/0x9f
? secondary_startup_64+0x9f/0x9f
Interrupts should not be enabled at this early in the boot process. It is
also fine to leave interrupts enabled during this time as there's only one
CPU running, and on_each_cpu() means to only run on the current CPU.
If early_boot_irqs_disabled is set, it is safe to run cpu_flush_range() with
interrupts disabled. Don't trigger a BUG_ON() in that case.
Link: http://lkml.kernel.org/r/20170526093717.0be3b849@gandalf.local.home
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Add a testcase to test kprobes via ftrace interface
with many concurrent kprobe events.
This tries to add many kprobe events (up to 256) on
kernel functions. To avoid making ftrace-based
kprobes (kprobes on fentry), it skips first N bytes
(on x86 N=5, on ppc or arm N=4) of function entry.
After that, it enables all those events, disable it,
and remove it.
Since the unoptimization buffer reclaiming will
be delayed, after removing events, it will wait
enough time.
Link: http://lkml.kernel.org/r/149577388470.11702.11832460851769204511.stgit@devbox
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Fix kprobes to set(recover) RWX bits correctly on trampoline
buffer before releasing it. Releasing readonly page to
module_memfree() crash the kernel.
Without this fix, if kprobes user register a bunch of kprobes
in function body (since kprobes on function entry usually
use ftrace) and unregister it, kernel hits a BUG and crash.
Link: http://lkml.kernel.org/r/149570868652.3518.14120169373590420503.stgit@devbox
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Fixes: d0381c81c2f7 ("kprobes/x86: Set kprobes pages read-only")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
