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2018-10-23Merge tag 'asoc-v5.0-2' of ↵Takashi Iwai
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Additional fixes for the next release A couple of fixes for build bot issues in the STM32 SAI driver.
2018-10-23ASoC: stm32: sai: fix master clock namingOlivier Moysan
Fixes: 8307b2afd386 ("ASoC: stm32: sai: set sai as mclk clock provider") Fix warning issued by strncat when bound equals to source length. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-23ASoC: stm32: add clock dependency for saiOlivier Moysan
Fixes: 8307b2afd386 ("ASoC: stm32: sai: set sai as mclk clock provider") Add COMMON_CLK dependency for STM32 SAI, as it is required by clock provider. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-22Merge tag 'asoc-v5.0' of ↵Takashi Iwai
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Updates for v5.0/v4.20 As ever there's a lot of small and driver specific changes going on here, but we do also have some relatively large changes in the core thanks to the hard work of Charles and Morimoto-san: - More component transitions from Morimoto-san, I think we're about finished with this. Thanks for all the hard work! - Morimoto-san also added a bunch of for_each_foo macros - A bunch of cleanups and fixes for DAPM from Charles. - MCLK support for several different devices, including CS42L51, STM32 SAI, and MAX98373. - Support for Allwinner A64 CODEC analog, Intel boards with DA7219 and MAX98927, Meson AXG PDM inputs, Nuvoton NAU8822, Renesas R8A7744 and TI PCM3060.
2018-10-22ALSA: hda/ca0132 - Actually fix microphone issueConnor McAdams
This patch fixes the microphone issue for all cards. The previous fix worked on the ZxR, but not on the AE-5 or Z. This patch has been tested to work for all cards. Signed-off-by: Connor McAdams <conmanx360@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-10-21Merge branch 'asoc-4.20' into asoc-nextMark Brown
2018-10-21Merge branch 'asoc-4.19' into asoc-linusMark Brown
2018-10-21ASoC: sun4i-i2s: move code from startup/shutdown hooks into pm_runtime hooksVasily Khoruzhick
startup() and shutdown() hooks are called for both substreams, so stopping either substream when another is running breaks the latter. E.g. playback breaks if capture is stopped when playback is running. Move code from startup() and shutdown() to resume() and suspend() hooks respectively to fix this issue Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-21ASoC: wm2000: Remove wm2000_read helper functionLucas Tanure
The return type "unsigned int" was used by the wm2000_read() function despite of the aspect that it will eventually return a negative error code. The resulting function doesn't add much to the code, so replace wm2000_read with regmap_read. Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-19ASoC: cs42l51: fix mclk supportOlivier Moysan
The MCLK clock is made optional for cs42l51 codec. However, ASoC DAPM clock supply widget, expects the clock to be defined unconditionally. Register MCLK DAPM conditionally in codec driver, depending on clock presence in DT. Fixes: 5e8d63a726f8 ("ASoC: cs42l51: add mclk support") Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-19Merge remote-tracking branch 'asoc/for-4.19' into asoc-4.20Mark Brown
2018-10-19ASoC: wm_adsp: Log addresses as 8 digits in wm_adsp_buffer_populateRichard Fitzgerald
Increase the address value width in the debug log from 4 digits to 8 digits to allow for DSP cores with larger memory address ranges. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-19ASoC: wm_adsp: Rename memory fields in wm_adsp_bufferRichard Fitzgerald
The wm_adsp_buffer struct is the control header of a circular buffer used to transfer data from the firmware over the control interface to an ALSA compressed stream. The original names of the fields pointing to the data buffer were based on ADSP2V2 memory layout where they correspond to {XM, XM, YM}. But this circular buffer could be used on other types of DSP core that have different memory region types. Also the names and description of the size fields were not very clear. The field names and descriptions have been changed to be generic and not imply any particular memory types. This patch updates the wm_adsp driver to the new field names. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-19ASoC: cs42l51: add mclk supportOlivier Moysan
Add MCLK dapm to allow configuration of cirrus CS42l51 codec as a master clock consumer. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-19ASoC: stm32: sai: set sai as mclk clock providerOlivier Moysan
Add master clock generation support in STM32 SAI. The master clock provided by SAI can be used to feed a codec. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-19ASoC: dt-bindings: add mclk support to cs42l51Olivier Moysan
Add clocks properties to cs42l51 Cirrus codec, to support master clock provider. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-19ASoC: dt-bindings: add mclk provider support to stm32 saiOlivier Moysan
add mclk provider support to stm32 sai Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-19ASoC: soc-core: fix trivial checkpatch issuesMarcel Ziswiler
Fix a few trivial aka cosmetic only checkpatch issues like long lines, wrong indentations, spurious blanks and newlines, missing newlines, multi-line comments etc. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-19ASoC: dapm: Add support for hw_free on CODEC to CODEC linksCharles Keepax
Currently, on power down for a CODEC to CODEC DAI link we only call digital_mute and shutdown. Provide a little more flexibility for drivers by adding a call to hw_free as well. Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-19ASoC: Intel: kbl_da7219_max98927: minor white space clean upDan Carpenter
I just added a couple missing tabs. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-18ALSA: i2c/cs8427: Fix int to char conversionPhilipp Klocke
Compiling with clang yields the following warning: sound/i2c/cs8427.c:140:31: warning: implicit conversion from 'int' to 'char' changes value from 160 to -96 [-Wconstant-conversion] data[0] = CS8427_REG_AUTOINC | CS8427_REG_CORU_DATABUF; ~ ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~ Because CS8427_REG_AUTOINC is defined as 128, it is too big for a char field. So change data from char to unsigned char, that it can hold the value. This patch does not change the generated code. Signed-off-by: Philipp Klocke <philipp97kl@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-10-18ALSA: doc: Brush up the old writing-an-alsa-driverTakashi Iwai
Slightly brushing up and throw the old dust away from my ancient writing-an-alsa-driver document. The contents aren't changed so much but the obsoleted parts are dropped. Also, remove the date and the version number. It's useless. Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-10-17ASoC: rsnd: tidyup SSICR::SWSP for TDMKuninori Morimoto
R-Car datasheet is indicating that WS output settings of SSICR::SWSP is inverted on TDM mode from non TDM mode settings. But, it is meaning that TDM should use 0 here. Without this patch, sound input/output 1ch will be 2ch, 2ch will be 3ch ..., be jumbled on I2S + TDM settings. This patch fixup it. This patch is tested on R-Car H3 ulcb-kf board, SSI3/4 TDM sound. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-17ASoC: rsnd: enable TDM settings for SSI parentKuninori Morimoto
Some SSIs are sharing each pins (= WS/CLK pin for playback/capture). Then, SSI parent needs control WS/CLK setting for SSI slave. In such case, SSI parent needs TDM settings if SSI slave is working as TDM mode. But it is not cared in current driver. It can't capture TDM sound without this patch if SSIs were pin sharing. This patch is tested on R-Car H3 ulcb-kf board, SSI3/4 with TDM sound. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-17ASoC: pcm3168a: add hw constraint for capture channelKuninori Morimoto
LEFT_J / I2S only can use TDM. commit 594680ea4a394 ("ASoC: pcm3168a: add hw constraint for channel") commit 3809688980205 ("ASoC: pcm3168a: add HW constraint for non RIGHT_J") added channel constraint for it, but, it was only for playback. This patch adds constraint for capture. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-17ASoC: sta32x: Add support for XTI clockDaniel Mack
The STA32x chips feature an XTI clock input that needs to be stable before the reset signal is released. Therefore, the chip driver needs to get a handle to the clock. Instead of relying on other parts of the system to enable the clock, let the codec driver grab a handle itself. In order to keep existing boards working, clock support is made optional. Signed-off-by: Daniel Mack <daniel@zonque.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-17ASoC: nau8822: new codec driverDavid Lin
Add driver for NAU88C22. Signed-off-by: David Lin <CTLIN0@nuvoton.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-17ASoC: tegra_sgtl5000: fix device_node refcountingMarcel Ziswiler
Similar to the following: commit 4321723648b0 ("ASoC: tegra_alc5632: fix device_node refcounting") commit 7c5dfd549617 ("ASoC: tegra: fix device_node refcounting") Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-17ASoC: sunxi: allow the sun8i-codec driver to be built on ARM64Vasily Khoruzhick
Allwinner A64 uses the same digital codec part as in A33, so we need to build this driver on ARM64 as well. Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-17ASoC: sunxi: Add new driver for Allwinner A64 codec's analog path controlsVasily Khoruzhick
The internal codec on A64 is split into 2 parts. The analog path controls are routed through an embedded custom register bus accessed through the PRCM block. Add an ASoC component driver for it. This should be tied to the codec audio card as an auxiliary device. Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-17ASoC: dt-binding: Add bindings for Allwinner A64 codec's analog path controlsVasily Khoruzhick
The internal codec on Allwinner A64 is split into 2 parts. The analog path controls are routed through an embedded custom register bus accessed through the PRCM block just as on A23/A33/H3. Add a binding for this hardware. Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-17ASoC: sun8i-codec-analog: split regmap code into separate driverVasily Khoruzhick
It will be reused by sun50i-codec-analog later. Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-17ASoC: sun8i-codec: Don't hardcode BCLK / LRCK ratioVasily Khoruzhick
BCLK / LRCK ratio should be sample size * channels, but it was hardcoded to 32 (0x1 is 32 as per A33 and A64 datasheets). Calculate it basing on sample size and number of channels. Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-17ASoC: sun4i-i2s: Add compatibility with A64 codec I2SMarcus Cooper
The I2S block used for the audio codec in the A64 differs from other 3 I2S modules in A64 and isn't compatible with H3. But it is very similar to what is found in A10(sun4i). However, its TX FIFO is located at a different address. Signed-off-by: Marcus Cooper <codekipper@gmail.com> Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-17ASoC: intel: don't pass GFP_DMA32 to dma_alloc_coherentChristoph Hellwig
The DMA API does its own zone decisions based on the coherent_dma_mask. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-16ALSA: hda: Add 2 more models to the power_save blacklistHans de Goede
Power-saving is causing plops on audio start/stop on Dell Precision T3600 laptops and Intel DZ77BH boards, add these to the power_save blacklist. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1525104 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-10-15ASoC: Intel: common: Add Kabylake Dialog+Maxim machine driver entryMac Chiang
This patch adds da7219_max98927 machine driver entry into machine table Signed-off-by: Mac Chiang <mac.chiang@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-15ASoC: Intel: Boards: Add KBL Dialog Maxim I2S machine driverMac Chiang
This patch adds Kabylake I2S machine driver with: DA7219 audio codec(SSP1) and MAXIM98927(SSP0) speaker amplifier. Signed-off-by: Mac Chiang <mac.chiang@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-15ASoC: AMD: Add SND_JACK_LINEOUT jack typeAkshu Agrawal
Some 3 pole connectors report impedance greater than threshold of 1000Ohm. Thus, da7219 reports them as LINEOUT. Adding the SND_JACK_LINEOUT type so that we don't fail to detect any 3 pole jack type. Also, changing SND_JACK_HEADPHONE | SND_JACK_MICROPHONE -> SND_JACK_HEADSET Signed-off-by: Akshu Agrawal <akshu.agrawal@amd.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-15Linux 4.19-rc8Greg Kroah-Hartman
2018-10-14ALSA: asihpi: don't pass GFP_DMA32 to dma_alloc_coherentChristoph Hellwig
The DMA API does its own zone decisions based on the coherent_dma_mask. [ Note: as the driver doesn't set the DMA coherent mask, we can assume the default 32bit DMA, hence it should be safe to drop the flag here -- tiwai ] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-10-14Merge tag 'libnvdimm-fixes-4.19-rc8' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Dan writes: "libnvdimm/dax 4.19-rc8 * Fix a livelock in dax_layout_busy_page() present since v4.18. The lockup triggers when truncating an actively mapped huge page out of a mapping pinned for direct-I/O. * Fix mprotect() clobbers of _PAGE_DEVMAP. Broken since v4.5 mprotect() clears this flag that is needed to communicate the liveness of device pages to the get_user_pages() path." * tag 'libnvdimm-fixes-4.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: mm: Preserve _PAGE_DEVMAP across mprotect() calls filesystem-dax: Fix dax_layout_busy_page() livelock
2018-10-14Merge branch 'i2c/for-current' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Wolfram writes: "i2c fix for 4.19: I2C has one documentation bugfix for something we changed during the v4.19 cycle" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: Fix kerneldoc for renamed i2c dma put function
2018-10-13Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmGreg Kroah-Hartman
Paolo writes: "KVM fixes for 4.19-rc8 Leftover bugfixes." * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: vmx: hyper-v: don't pass EPT configuration info to vmx_hv_remote_flush_tlb() KVM: x86: support CONFIG_KVM_AMD=y with CONFIG_CRYPTO_DEV_CCP_DD=m ARM: KVM: Correctly order SGI register entries in the cp15 array
2018-10-13KVM: vmx: hyper-v: don't pass EPT configuration info to ↵Vitaly Kuznetsov
vmx_hv_remote_flush_tlb() I'm observing random crashes in multi-vCPU L2 guests running on KVM on Hyper-V. I bisected the issue to the commit 877ad952be3d ("KVM: vmx: Add tlb_remote_flush callback support"). Hyper-V TLFS states: "AddressSpace specifies an address space ID (an EPT PML4 table pointer)" So apparently, Hyper-V doesn't expect us to pass naked EPTP, only PML4 pointer should be used. Strip off EPT configuration information before calling into vmx_hv_remote_flush_tlb(). Fixes: 877ad952be3d ("KVM: vmx: Add tlb_remote_flush callback support") Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-13ubifs: Fix WARN_ON logic in exit pathRichard Weinberger
ubifs_assert() is not WARN_ON(), so we have to invert the checks. Randy faced this warning with UBIFS being a module, since most users use UBIFS as builtin because UBIFS is the rootfs nobody noticed so far. :-( Including me. Reported-by: Randy Dunlap <rdunlap@infradead.org> Fixes: 54169ddd382d ("ubifs: Turn two ubifs_assert() into a WARN_ON()") Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-13Merge branch 'akpm'Greg Kroah-Hartman
Fixes from Andrew: * akpm: fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters() mm/thp: fix call to mmu_notifier in set_pmd_migration_entry() v2 mm/mmap.c: don't clobber partially overlapping VMA with MAP_FIXED_NOREPLACE ocfs2: fix a GCC warning
2018-10-13fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters()Khazhismel Kumykov
On non-preempt kernels this loop can take a long time (more than 50 ticks) processing through entries. Link: http://lkml.kernel.org/r/20181010172623.57033-1-khazhy@google.com Signed-off-by: Khazhismel Kumykov <khazhy@google.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-13mm/thp: fix call to mmu_notifier in set_pmd_migration_entry() v2Jérôme Glisse
Inside set_pmd_migration_entry() we are holding page table locks and thus we can not sleep so we can not call invalidate_range_start/end() So remove call to mmu_notifier_invalidate_range_start/end() because they are call inside the function calling set_pmd_migration_entry() (see try_to_unmap_one()). Link: http://lkml.kernel.org/r/20181012181056.7864-1-jglisse@redhat.com Signed-off-by: Jérôme Glisse <jglisse@redhat.com> Reported-by: Andrea Arcangeli <aarcange@redhat.com> Reviewed-by: Zi Yan <zi.yan@cs.rutgers.edu> Acked-by: Michal Hocko <mhocko@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: David Nellans <dnellans@nvidia.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Minchan Kim <minchan@kernel.org> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-13mm/mmap.c: don't clobber partially overlapping VMA with MAP_FIXED_NOREPLACEJann Horn
Daniel Micay reports that attempting to use MAP_FIXED_NOREPLACE in an application causes that application to randomly crash. The existing check for handling MAP_FIXED_NOREPLACE looks up the first VMA that either overlaps or follows the requested region, and then bails out if that VMA overlaps *the start* of the requested region. It does not bail out if the VMA only overlaps another part of the requested region. Fix it by checking that the found VMA only starts at or after the end of the requested region, in which case there is no overlap. Test case: user@debian:~$ cat mmap_fixed_simple.c #include <sys/mman.h> #include <errno.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #ifndef MAP_FIXED_NOREPLACE #define MAP_FIXED_NOREPLACE 0x100000 #endif int main(void) { char *p; errno = 0; p = mmap((void*)0x10001000, 0x4000, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED_NOREPLACE, -1, 0); printf("p1=%p err=%m\n", p); errno = 0; p = mmap((void*)0x10000000, 0x2000, PROT_READ, MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED_NOREPLACE, -1, 0); printf("p2=%p err=%m\n", p); char cmd[100]; sprintf(cmd, "cat /proc/%d/maps", getpid()); system(cmd); return 0; } user@debian:~$ gcc -o mmap_fixed_simple mmap_fixed_simple.c user@debian:~$ ./mmap_fixed_simple p1=0x10001000 err=Success p2=0x10000000 err=Success 10000000-10002000 r--p 00000000 00:00 0 10002000-10005000 ---p 00000000 00:00 0 564a9a06f000-564a9a070000 r-xp 00000000 fe:01 264004 /home/user/mmap_fixed_simple 564a9a26f000-564a9a270000 r--p 00000000 fe:01 264004 /home/user/mmap_fixed_simple 564a9a270000-564a9a271000 rw-p 00001000 fe:01 264004 /home/user/mmap_fixed_simple 564a9a54a000-564a9a56b000 rw-p 00000000 00:00 0 [heap] 7f8eba447000-7f8eba5dc000 r-xp 00000000 fe:01 405885 /lib/x86_64-linux-gnu/libc-2.24.so 7f8eba5dc000-7f8eba7dc000 ---p 00195000 fe:01 405885 /lib/x86_64-linux-gnu/libc-2.24.so 7f8eba7dc000-7f8eba7e0000 r--p 00195000 fe:01 405885 /lib/x86_64-linux-gnu/libc-2.24.so 7f8eba7e0000-7f8eba7e2000 rw-p 00199000 fe:01 405885 /lib/x86_64-linux-gnu/libc-2.24.so 7f8eba7e2000-7f8eba7e6000 rw-p 00000000 00:00 0 7f8eba7e6000-7f8eba809000 r-xp 00000000 fe:01 405876 /lib/x86_64-linux-gnu/ld-2.24.so 7f8eba9e9000-7f8eba9eb000 rw-p 00000000 00:00 0 7f8ebaa06000-7f8ebaa09000 rw-p 00000000 00:00 0 7f8ebaa09000-7f8ebaa0a000 r--p 00023000 fe:01 405876 /lib/x86_64-linux-gnu/ld-2.24.so 7f8ebaa0a000-7f8ebaa0b000 rw-p 00024000 fe:01 405876 /lib/x86_64-linux-gnu/ld-2.24.so 7f8ebaa0b000-7f8ebaa0c000 rw-p 00000000 00:00 0 7ffcc99fa000-7ffcc9a1b000 rw-p 00000000 00:00 0 [stack] 7ffcc9b44000-7ffcc9b47000 r--p 00000000 00:00 0 [vvar] 7ffcc9b47000-7ffcc9b49000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall] user@debian:~$ uname -a Linux debian 4.19.0-rc6+ #181 SMP Wed Oct 3 23:43:42 CEST 2018 x86_64 GNU/Linux user@debian:~$ As you can see, the first page of the mapping at 0x10001000 was clobbered. Link: http://lkml.kernel.org/r/20181010152736.99475-1-jannh@google.com Fixes: a4ff8e8620d3 ("mm: introduce MAP_FIXED_NOREPLACE") Signed-off-by: Jann Horn <jannh@google.com> Reported-by: Daniel Micay <danielmicay@gmail.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: John Hubbard <jhubbard@nvidia.com> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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