- Jun 22, 2020
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Paul Cercueil authored
commit 9017dc4f upstream. Calculating the hardware value for the duty from the hardware value of the period resulted in a precision loss versus calculating it from the clock rate directly. (Also remove a cast that doesn't really need to be here) Fixes: f6b8a570 ("pwm: Add Ingenic JZ4740 support") Cc: <stable@vger.kernel.org> Suggested-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by:
Paul Cercueil <paul@crapouillou.net> Signed-off-by:
Thierry Reding <thierry.reding@gmail.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Hans de Goede authored
commit 01aa905d upstream. Before commit cfc4c189 ("pwm: Read initial hardware state at request time"), a driver's get_state callback would get called once per PWM from pwmchip_add(). pwm-lpss' runtime-pm code was relying on this, getting a runtime-pm ref for PWMs which are enabled at probe time from within its get_state callback, before enabling runtime-pm. The change to calling get_state at request time causes a number of problems: 1. PWMs enabled at probe time may get runtime suspended before they are requested, causing e.g. a LCD backlight controlled by the PWM to turn off. 2. When the request happens when the PWM has been runtime suspended, the ctrl register will read all 1 / 0xffffffff, causing get_state to store bogus values in the pwm_state. 3. get_state was using an async pm_runtime_get() call, because it assumed that runtime-pm has not been enabled yet. If shortly after the request an apply call is made, then the pwm_lpss_is_updating() check may trigger because the resume triggered by the pm_runtime_get() call is not complete yet, so the ctrl register still reads all 1 / 0xffffffff. This commit fixes these issues by moving the initial pm_runtime_get() call for PWMs which are enabled at probe time to the pwm_lpss_probe() function; and by making get_state take a runtime-pm ref before reading the ctrl reg. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1828927 Fixes: cfc4c189 ("pwm: Read initial hardware state at request time") Cc: stable@vger.kernel.org Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Reviewed-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
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Anup Patel authored
commit 4e0f9e3a upstream. The head text section (i.e. _start, secondary_start_sbi, etc) and the init section fall under same page table level-1 mapping. Currently, the runtime CPU hotplug is broken because we are marking init section as non-executable which in-turn marks head text section as non-executable. Further investigating other architectures, it seems marking the init section as non-executable is redundant because the init section pages are anyway poisoned and freed. To fix broken runtime CPU hotplug, we simply remove the code marking the init section as non-executable. Fixes: d27c3c90 ("riscv: add STRICT_KERNEL_RWX support") Cc: stable@vger.kernel.org Signed-off-by:
Anup Patel <anup.patel@wdc.com> Reviewed-by:
Zong Li <zong.li@sifive.com> Reviewed-by:
Atish Patra <atish.patra@wdc.com> Signed-off-by:
Palmer Dabbelt <palmerdabbelt@google.com> Signed-off-by:
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Ahmed S. Darwish authored
commit 15b81ce5 upstream. For optimized block readers not holding a mutex, the "number of sectors" 64-bit value is protected from tearing on 32-bit architectures by a sequence counter. Disable preemption before entering that sequence counter's write side critical section. Otherwise, the read side can preempt the write side section and spin for the entire scheduler tick. If the reader belongs to a real-time scheduling class, it can spin forever and the kernel will livelock. Fixes: c83f6bf9 ("block: add partition resize function to blkpg ioctl") Cc: <stable@vger.kernel.org> Signed-off-by:
Ahmed S. Darwish <a.darwish@linutronix.de> Reviewed-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by:
Jens Axboe <axboe@kernel.dk> Signed-off-by:
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NeilBrown authored
commit 24c5efe4 upstream. gss_mech_register() calls svcauth_gss_register_pseudoflavor() for each flavour, but gss_mech_unregister() does not call auth_domain_put(). This is unbalanced and makes it impossible to reload the module. Change svcauth_gss_register_pseudoflavor() to return the registered auth_domain, and save it for later release. Cc: stable@vger.kernel.org (v2.6.12+) Link: https://bugzilla.kernel.org/show_bug.cgi?id=206651 Signed-off-by:
NeilBrown <neilb@suse.de> Signed-off-by:
J. Bruce Fields <bfields@redhat.com> Signed-off-by:
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NeilBrown authored
commit d47a5dc2 upstream. There is no valid case for supporting duplicate pseudoflavor registrations. Currently the silent acceptance of such registrations is hiding a bug. The rpcsec_gss_krb5 module registers 2 flavours but does not unregister them, so if you load, unload, reload the module, it will happily continue to use the old registration which now has pointers to the memory were the module was originally loaded. This could lead to unexpected results. So disallow duplicate registrations. Link: https://bugzilla.kernel.org/show_bug.cgi?id=206651 Cc: stable@vger.kernel.org (v2.6.12+) Signed-off-by:
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Alexander Duyck authored
commit fb69c2c8 upstream. We should disable free page reporting if page poisoning is enabled but we cannot report it via the balloon interface. This way we can avoid the possibility of corrupting guest memory. Normally the page poisoning feature should always be present when free page reporting is enabled on the hypervisor, however this allows us to correctly handle a case of the virtio-balloon device being possibly misconfigured. Fixes: 5d757c8d518d ("virtio-balloon: add support for providing free page reports to host") Cc: stable@vger.kernel.org Acked-by:
David Hildenbrand <david@redhat.com> Signed-off-by:
Alexander Duyck <alexander.h.duyck@linux.intel.com> Link: https://lore.kernel.org/r/20200508173732.17877.85060.stgit@localhost.localdomain Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
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Masahiro Yamada authored
commit 4b50c8c4 upstream. This code does not work as stated in the comment. $(CONFIG_MODVERSIONS) is always empty because it is expanded before include/config/auto.conf is included. Hence, 'make modules' with CONFIG_MODVERSION=y cannot record the version CRCs. This has been broken since 2003, commit ("kbuild: Enable modules to be build using the "make dir/" syntax"). [1] [1]: https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/commit/?id=15c6240cdc44bbeef3c4797ec860f9765ef4f1a7 Cc: linux-stable <stable@vger.kernel.org> # v2.5.71+ Signed-off-by:
Masahiro Yamada <masahiroy@kernel.org> Signed-off-by:
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Michael Ellerman authored
commit 912c0a7f upstream. At boot the FSCR is initialised via one of two paths. On most systems it's set to a hard coded value in __init_FSCR(). On newer skiboot systems we use the device tree CPU features binding, where firmware can tell Linux what bits to set in FSCR (and HFSCR). In both cases the value that's configured at boot is not propagated into the init_task.thread.fscr value prior to the initial fork of init (pid 1), which means the value is not used by any processes other than swapper (the idle task). For the __init_FSCR() case this is OK, because the value in init_task.thread.fscr is initialised to something sensible. However it does mean that the value set in __init_FSCR() is not used other than for swapper, which is odd and confusing. The bigger problem is for the device tree CPU features case it prevents firmware from setting (or clearing) FSCR bits for use by user space. This means all existing kernels can not have features enabled/disabled by firmware if those features require setting/clearing FSCR bits. We can handle both cases by saving the FSCR value into init_task.thread.fscr after we have initialised it at boot. This fixes the bug for device tree CPU features, and will allow us to simplify the initialisation for the __init_FSCR() case in a future patch. Fixes: 5a61ef74 ("powerpc/64s: Support new device tree binding for discovering CPU features") Cc: stable@vger.kernel.org # v4.12+ Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200527145843.2761782-3-mpe@ellerman.id.au Signed-off-by:
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Michael Ellerman authored
commit 993e3d96 upstream. The device tree CPU features binding includes FSCR bit numbers which Linux is instructed to set by firmware. Whether that's a good idea or not, in the case of the DSCR the Linux implementation has a hard requirement that the FSCR_DSCR bit not be set by default. We use it to track when a process reads/writes to DSCR, so it must be clear to begin with. So if firmware tells us to set FSCR_DSCR we must ignore it. Currently this does not cause a bug in our DSCR handling because the value of FSCR that the device tree CPU features code establishes is only used by swapper. All other tasks use the value hard coded in init_task.thread.fscr. However we'd like to fix that in a future commit, at which point this will become necessary. Fixes: 5a61ef74 ("powerpc/64s: Support new device tree binding for discovering CPU features") Cc: stable@vger.kernel.org # v4.12+ Signed-off-by:
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Christophe Leroy authored
commit 888468ce upstream. Mapping of early shadow area is implemented by using a single static page table having all entries pointing to the same early shadow page. The shadow area must therefore occupy full PGD entries. The shadow area has a size of 128MB starting at 0xf8000000. With 4k pages, a PGD entry is 4MB With 16k pages, a PGD entry is 64MB With 64k pages, a PGD entry is 1GB which is too big. Until we rework the early shadow mapping, disable KASAN when the page size is too big. Fixes: 2edb16ef ("powerpc/32: Add KASAN support") Cc: stable@vger.kernel.org # v5.2+ Reported-by:
kbuild test robot <lkp@intel.com> Signed-off-by:
Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by:
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Christophe Leroy authored
commit d2a91cef upstream. Doing kasan pages allocation in MMU_init is too early, kernel doesn't have access yet to the entire memory space and memblock_alloc() fails when the kernel is a bit big. Do it from kasan_init() instead. Fixes: 2edb16ef ("powerpc/32: Add KASAN support") Cc: stable@vger.kernel.org Signed-off-by:
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Christophe Leroy authored
commit 3a66a24f upstream. At the time being, KASAN_SHADOW_END is 0x100000000, which is 0 in 32 bits representation. This leads to a couple of issues: - kasan_remap_early_shadow_ro() does nothing because the comparison k_cur < k_end is always false. - In ptdump, address comparison for markers display fails and the marker's name is printed at the start of the KASAN area instead of being printed at the end. However, there is no need to shadow the KASAN shadow area itself, so the KASAN shadow area can stop shadowing memory at the start of itself. With a PAGE_OFFSET set to 0xc0000000, KASAN shadow area is then going from 0xf8000000 to 0xff000000. Fixes: cbd18991 ("powerpc/mm: Fix an Oops in kasan_mmu_init()") Cc: stable@vger.kernel.org Signed-off-by:
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Christophe Leroy authored
commit 74016701 upstream. 'thread' doesn't exist in kuap_check() macro. Use 'current' instead. Fixes: a68c31fc ("powerpc/32s: Implement Kernel Userspace Access Protection") Cc: stable@vger.kernel.org Reported-by:
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Michael Ellerman authored
commit 93900337 upstream. create_cpu_loop() calls smu_sat_get_sdb_partition() which does kmalloc() and returns the allocated buffer. In fact it's called twice, and neither buffer is freed. This results in a memory leak as reported by Erhard: unreferenced object 0xc00000047081f840 (size 32): comm "kwindfarm", pid 203, jiffies 4294880630 (age 5552.877s) hex dump (first 32 bytes): c8 06 02 7f ff 02 ff 01 fb bf 00 41 00 20 00 00 ...........A. .. 00 07 89 37 00 a0 00 00 00 00 00 00 00 00 00 00 ...7............ backtrace: [<0000000083f0a65c>] .smu_sat_get_sdb_partition+0xc4/0x2d0 [windfarm_smu_sat] [<000000003010fcb7>] .pm112_wf_notify+0x104c/0x13bc [windfarm_pm112] [<00000000b958b2dd>] .notifier_call_chain+0xa8/0x180 [<0000000070490868>] .blocking_notifier_call_chain+0x64/0x90 [<00000000131d8149>] .wf_thread_func+0x114/0x1a0 [<000000000d54838d>] .kthread+0x13c/0x190 [<00000000669b72bc>] .ret_from_kernel_thread+0x58/0x64 unreferenced object 0xc0000004737089f0 (size 16): comm "kwindfarm", pid 203, jiffies 4294880879 (age 5552.050s) hex dump (first 16 bytes): c4 04 01 7f 22 11 e0 e6 ff 55 7b 12 ec 11 00 00 ...."....U{..... backtrace: [<0000000083f0a65c>] .smu_sat_get_sdb_partition+0xc4/0x2d0 [windfarm_smu_sat] [<00000000b94ef7e1>] .pm112_wf_notify+0x1294/0x13bc [windfarm_pm112] [<00000000b958b2dd>] .notifier_call_chain+0xa8/0x180 [<0000000070490868>] .blocking_notifier_call_chain+0x64/0x90 [<00000000131d8149>] .wf_thread_func+0x114/0x1a0 [<000000000d54838d>] .kthread+0x13c/0x190 [<00000000669b72bc>] .ret_from_kernel_thread+0x58/0x64 Fix it by rearranging the logic so we deal with each buffer separately, which then makes it easy to free the buffer once we're done with it. Fixes: ac171c46 ("[PATCH] powerpc: Thermal control for dual core G5s") Cc: stable@vger.kernel.org # v2.6.16+ Reported-by:
Erhard F. <erhard_f@mailbox.org> Signed-off-by:
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Jonathan Bakker authored
commit 869d42e6 upstream. SDHCI1 is connected to a BCM4329 WiFi/BT chip which requires power to be kept over suspend. As the surrounding hardware supports this, mark it as such. This fixes WiFi after a suspend/resume cycle. Fixes: 17064246 ("ARM: dts: s5pv210: Add initial DTS for Samsung Aries based phones") Cc: <stable@vger.kernel.org> Signed-off-by:
Jonathan Bakker <xc-racer2@live.ca> Signed-off-by:
Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by:
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Ludovic Desroches authored
commit baa998ae upstream. The gpio property for the vbus pin doesn't match the pinctrl and is not correct. Signed-off-by:
Ludovic Desroches <ludovic.desroches@microchip.com> Fixes: 42ed5355 "ARM: dts: at91: introduce the sama5d2 ptc ek board" Cc: stable@vger.kernel.org # 4.19 and later Link: https://lore.kernel.org/r/20200401221947.41502-1-ludovic.desroches@microchip.com Signed-off-by:
Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by:
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Marek Szyprowski authored
commit 8807d356 upstream. GPIO lines for the CM36651 sensor I2C bus use the normal not the inverted polarity. This bug has been there since adding the CM36651 sensor by commit 85cb4e0b ("ARM: dts: add cm36651 light/proximity sensor node for exynos4412-trats2"), but went unnoticed because the "i2c-gpio" driver ignored the GPIO polarity specified in the device-tree. The recent conversion of "i2c-gpio" driver to the new, descriptor based GPIO API, automatically made it the DT-specified polarity aware, what broke the CM36651 sensor operation. Fixes: 85cb4e0b ("ARM: dts: add cm36651 light/proximity sensor node for exynos4412-trats2") CC: stable@vger.kernel.org # 4.16+ Signed-off-by:
Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by:
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Jan Kara authored
commit 14ff6286 upstream. When reserved transaction handle is unused, we subtract its reserved credits in __jbd2_journal_unreserve_handle() called from jbd2_journal_stop(). However this function forgets to remove reserved credits from transaction->t_outstanding_credits and thus the transaction space that was reserved remains effectively leaked. The leaked transaction space can be quite significant in some cases and leads to unnecessarily small transactions and thus reducing throughput of the journalling machinery. E.g. fsmark workload creating lots of 4k files was observed to have about 20% lower throughput due to this when ext4 is mounted with dioread_nolock mount option. Subtract reserved credits from t_outstanding_credits as well. CC: stable@vger.kernel.org Fixes: 8f7d89f3 ("jbd2: transaction reservation support") Reviewed-by:
Andreas Dilger <adilger@dilger.ca> Signed-off-by:
Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20200520133119.1383-3-jack@suse.cz Signed-off-by:
Theodore Ts'o <tytso@mit.edu> Signed-off-by:
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Corentin Labbe authored
commit 5098e2b9 upstream. I have hit the following build error: armv7a-hardfloat-linux-gnueabi-ld: drivers/soc/tegra/pmc.o: in function `pinconf_generic_dt_node_to_map_pin': pmc.c:(.text+0x500): undefined reference to `pinconf_generic_dt_node_to_map' armv7a-hardfloat-linux-gnueabi-ld: drivers/soc/tegra/pmc.o:(.rodata+0x1f88): undefined reference to `pinconf_generic_dt_free_map' So SOC_TEGRA_PMC should select GENERIC_PINCONF. Fixes: 4a37f11c ("soc/tegra: pmc: Implement pad configuration via pinctrl") Cc: stable <stable@vger.kernel.org> Signed-off-by:
Corentin Labbe <clabbe@baylibre.com> Signed-off-by:
Thierry Reding <treding@nvidia.com> Signed-off-by:
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Dmitry Osipenko authored
commit 35509737 upstream. The PL310 Auxiliary Control Register shouldn't have the "Full line of zero" optimization bit being set before L2 cache is enabled. The L2X0 driver takes care of enabling the optimization by itself. This patch fixes a noisy error message on Tegra20 and Tegra30 telling that cache optimization is erroneously enabled without enabling it for the CPU: L2C-310: enabling full line of zeros but not enabled in Cortex-A9 Cc: <stable@vger.kernel.org> Signed-off-by:
Dmitry Osipenko <digetx@gmail.com> Tested-by:
Nicolas Chauvet <kwizart@gmail.com> Signed-off-by:
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Douglas Anderson authored
commit b5945214 upstream. cpu_pm_notify() is basically a wrapper of notifier_call_chain(). notifier_call_chain() doesn't initialize *nr_calls to 0 before it starts incrementing it--presumably it's up to the callers to do this. Unfortunately the callers of cpu_pm_notify() don't init *nr_calls. This potentially means you could get too many or two few calls to CPU_PM_ENTER_FAILED or CPU_CLUSTER_PM_ENTER_FAILED depending on the luck of the stack. Let's fix this. Fixes: ab10023e ("cpu_pm: Add cpu power management notifiers") Cc: stable@vger.kernel.org Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by:
Stephen Boyd <swboyd@chromium.org> Reviewed-by:
Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20200504104917.v6.3.I2d44fc0053d019f239527a4e5829416714b7e299@changeid Signed-off-by:
Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by:
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Hari Bathini authored
commit 9a2921e5 upstream. If the memory chunk found for reserving memory overshoots the memory limit imposed, do not proceed with reserving memory. Default behavior was this until commit 140777a3 ("powerpc/fadump: consider reserved ranges while reserving memory") changed it unwittingly. Fixes: 140777a3 ("powerpc/fadump: consider reserved ranges while reserving memory") Cc: stable@vger.kernel.org Reported-by:
Hari Bathini <hbathini@linux.ibm.com> Signed-off-by:
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Hari Bathini authored
commit 140777a3 upstream. Commit 0962e800 ("powerpc/prom: Scan reserved-ranges node for memory reservations") enabled support to parse reserved-ranges DT node and reserve kernel memory falling in these ranges for F/W purposes. Memory reserved for FADump should not overlap with these ranges as it could corrupt memory meant for F/W or crash'ed kernel memory to be exported as vmcore. But since commit 579ca1a2 ("powerpc/fadump: make use of memblock's bottom up allocation mode"), memblock_find_in_range() is being used to find the appropriate area to reserve memory for FADump, which can't account for reserved-ranges as these ranges are reserved only after FADump memory reservation. With reserved-ranges now being populated during early boot, look out for these memory ranges while reserving memory for FADump. Without this change, MPIPL on PowerNV systems aborts with hostboot failure, when memory reserved for FADump is less than 4096MB. Fixes: 579ca1a2 ("powerpc/fadump: make use of memblock's bottom up allocation mode") Cc: stable@vger.kernel.org Signed-off-by:
Mahesh Salgaonkar <mahesh@linux.ibm.com> Signed-off-by:
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Hari Bathini authored
commit 02c04e37 upstream. At times, memory ranges have to be looked up during early boot, when kernel couldn't be initialized for dynamic memory allocation. In fact, reserved-ranges look up is needed during FADump memory reservation. Without accounting for reserved-ranges in reserving memory for FADump, MPIPL boot fails with memory corruption issues. So, extend memory ranges handling to support static allocation and populate reserved memory ranges during early boot. Fixes: dda9dbfe ("powerpc/fadump: consider reserved ranges while releasing memory") Cc: stable@vger.kernel.org Signed-off-by:
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Bernard Zhao authored
commit 4bff7214 upstream. Aligning of tFAW timing with standard was using wrong argument as minimum acceptable value. This could lead to wrong timing if provided timings and clock period do not match the standard. Fixes: 6e7674c3 ("memory: Add DMC driver for Exynos5422") Cc: <stable@vger.kernel.org> Signed-off-by:
Bernard Zhao <bernard@vivo.com> Reviewed-by:
Lukasz Luba <lukasz.luba@arm.com> Signed-off-by:
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Mikulas Patocka authored
commit 54505a1e upstream. The commits cd0e00c1 and 92d7223a broke boot on the Alpha Avanti platform. The patches move memory barriers after a write before the write. The result is that if there's iowrite followed by ioread, there is no barrier between them. The Alpha architecture allows reordering of the accesses to the I/O space, and the missing barrier between write and read causes hang with serial port and real time clock. This patch makes barriers confiorm to the specification. 1. We add mb() before readX_relaxed and writeX_relaxed - memory-barriers.txt claims that these functions must be ordered w.r.t. each other. Alpha doesn't order them, so we need an explicit barrier. 2. We add mb() before reads from the I/O space - so that if there's a write followed by a read, there should be a barrier between them. Signed-off-by:
Mikulas Patocka <mpatocka@redhat.com> Fixes: cd0e00c1 ("alpha: io: reorder barriers to guarantee writeX() and iowriteX() ordering") Fixes: 92d7223a ("alpha: io: reorder barriers to guarantee writeX() and iowriteX() ordering #2") Cc: stable@vger.kernel.org # v4.17+ Acked-by:
Ivan Kokshaysky <ink@jurassic.park.msu.ru> Reviewed-by:
Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by:
Matt Turner <mattst88@gmail.com> Signed-off-by:
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Eric Biggers authored
commit 64611a15 upstream. queue_limits::logical_block_size got changed from unsigned short to unsigned int, but it was forgotten to update crypt_io_hints() to use the new type. Fix it. Fixes: ad6bf88a ("block: fix an integer overflow in logical block size") Cc: stable@vger.kernel.org Signed-off-by:
Eric Biggers <ebiggers@google.com> Reviewed-by:
Mike Snitzer <snitzer@redhat.com> Signed-off-by:
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Greg Kroah-Hartman authored
commit 46d26819 upstream. Sometimes it is better to unregister individual nodes instead of trying to do them all at once with software_node_unregister_nodes(), so create software_node_unregister() so that you can unregister them one at a time. This is especially important when creating nodes in a hierarchy, with parent -> children representations. Children always need to be removed before a parent is, as the swnode logic assumes this is going to be the case. Fix up the lib/test_printf.c fwnode_pointer() test which to use this new function as it had the problem of tearing things down in the backwards order. Fixes: f1ce39df ("lib/test_printf: Add tests for %pfw printk modifier") Cc: stable <stable@vger.kernel.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Sakari Ailus <sakari.ailus@linux.intel.com> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Reported-by:
Naresh Kamboju <naresh.kamboju@linaro.org> Reported-by:
kernel test robot <rong.a.chen@intel.com> Reported-by:
Randy Dunlap <rdunlap@infradead.org> Tested-by:
Petr Mladek <pmladek@suse.com> Tested-by:
Guenter Roeck <linux@roeck-us.net> Reviewed-by:
Heikki Krogerus <heikki.krogerus@linux.intel.com> Acked-by:
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Al Viro authored
commit 142cd252 upstream. We do need access_process_vm() to access the target's reg_window. However, access to caller's memory (storing the result in genregs32_get(), fetching the new values in case of genregs32_set()) should be done by normal uaccess primitives. Fixes: ad4f9576 ([SPARC64]: Fix user accesses in regset code.) Cc: stable@kernel.org Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Al Viro authored
commit cf51e129 upstream. It needs access_process_vm() if the traced process does not share mm with the caller. Solution is similar to what sparc64 does. Note that genregs32_set() is only ever called with pos being 0 or 32 * sizeof(u32) (the latter - as part of PTRACE_SETREGS handling). Cc: stable@kernel.org Signed-off-by:
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Wei Yongjun authored
commit 43d7ce70 upstream. Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. This avoids a use-after-free in case the driver is later unbound. Fixes: d2efbbd1 ("gnss: add driver for sirfstar-based receivers") Reported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> [ johan: amend commit message; mention potential use-after-free ] Cc: stable <stable@vger.kernel.org> # 4.19 Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Jonathan Bakker authored
commit f354157a upstream. Currently, for EINT_TYPE GPIOs, the CON and FLTCON registers are saved and restored over a suspend/resume cycle. However, the EINT_MASK registers are not. On S5PV210 at the very least, these registers are not retained over suspend, leading to the interrupts remaining masked upon resume and therefore no interrupts being triggered for the device. There should be no effect on any SoCs that do retain these registers as theoretically we would just be re-writing what was already there. Fixes: 7ccbc60c ("pinctrl: exynos: Handle suspend/resume of GPIO EINT registers") Cc: <stable@vger.kernel.org> Signed-off-by:
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Jonathan Bakker authored
commit b577a279 upstream. Commit a8be2af0 ("pinctrl: samsung: Write external wakeup interrupt mask") started writing the eint wakeup mask from the pinctrl driver. Unfortunately, it made the assumption that the private retention data was always a regmap while in the case of s5pv210 it is a raw pointer to the clock base (as the eint wakeup mask not in the PMU as with newer Exynos platforms). Fixes: a8be2af0 ("pinctrl: samsung: Write external wakeup interrupt mask") Cc: <stable@vger.kernel.org> Signed-off-by:
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Qiushi Wu authored
commit 1d7a7128 upstream. In function power_supply_add_hwmon_sysfs(), psyhw->props is allocated by bitmap_zalloc(). But this pointer is not deallocated when devm_add_action fail, which lead to a memory leak bug. To fix this, we replace devm_add_action with devm_add_action_or_reset. Cc: stable@kernel.org Fixes: e67d4dfc ("power: supply: Add HWMON compatibility layer") Signed-off-by:
Qiushi Wu <wu000273@umn.edu> Signed-off-by:
Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by:
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Michał Mirosław authored
commit 6b20464a upstream. tempX_label files are swapped compared to what power_supply_hwmon_temp_to_property() uses. Make them match. Cc: stable@vger.kernel.org Fixes: e67d4dfc ("power: supply: Add HWMON compatibility layer") Signed-off-by:
Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by:
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Anders Roxell authored
commit 73174acc upstream. Make sure that the POWER_RESET_VEXPRESS driver won't have bind/unbind attributes available via the sysfs, so lets be explicit here and use ".suppress_bind_attrs = true" to prevent userspace from doing something silly. Link: https://lore.kernel.org/r/20200527112608.3886105-2-anders.roxell@linaro.org Cc: stable@vger.kernel.org Signed-off-by:
Anders Roxell <anders.roxell@linaro.org> Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Jon Derrick authored
commit 4fda230e upstream. Sub-devices of a real DMA device might exist on a separate segment than the real DMA device and its IOMMU. These devices should still have a valid device_domain_info, but the current dma alias model won't allocate info for the subdevice. This patch adds a segment member to struct device_domain_info and uses the sub-device's BDF so that these sub-devices won't alias to other devices. Fixes: 2b0140c6 ("iommu/vt-d: Use pci_real_dma_dev() for mapping") Cc: stable@vger.kernel.org # v5.6+ Signed-off-by:
Jon Derrick <jonathan.derrick@intel.com> Acked-by:
Lu Baolu <baolu.lu@linux.intel.com> Link: https://lore.kernel.org/r/20200527165617.297470-3-jonathan.derrick@intel.com Signed-off-by:
Joerg Roedel <jroedel@suse.de> Signed-off-by:
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Jon Derrick authored
commit 8038bdb8 upstream. Domain context mapping can encounter issues with sub-devices of a real DMA device. A sub-device cannot have a valid context entry due to it potentially aliasing another device's 16-bit ID. It's expected that sub-devices of the real DMA device uses the real DMA device's requester when context mapping. This is an issue when a sub-device is removed where the context entry is cleared for all aliases. Other sub-devices are still valid, resulting in those sub-devices being stranded without valid context entries. The correct approach is to use the real DMA device when programming the context entries. The insertion path is correct because device_to_iommu() will return the bus and devfn of the real DMA device. The removal path needs to only operate on the real DMA device, otherwise the entire context entry would be cleared for all sub-devices of the real DMA device. This patch also adds a helper to determine if a struct device is a sub-device of a real DMA device. Fixes: 2b0140c6 ("iommu/vt-d: Use pci_real_dma_dev() for mapping") Cc: stable@vger.kernel.org # v5.6+ Signed-off-by:
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Alexander Monakov authored
commit b6bea24d upstream. Add support for AMD Renoir (4000-series Ryzen CPUs). Signed-off-by:
Alexander Monakov <amonakov@ispras.ru> Signed-off-by:
Borislav Petkov <bp@suse.de> Acked-by:
Yazen Ghannam <yazen.ghannam@amd.com> Link: https://lkml.kernel.org/r/20200510204842.2603-4-amonakov@ispras.ru Signed-off-by:
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