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2020-07-24tpm: Unify the mismatching TPM space buffer sizesJarkko Sakkinen
The size of the buffers for storing context's and sessions can vary from arch to arch as PAGE_SIZE can be anything between 4 kB and 256 kB (the maximum for PPC64). Define a fixed buffer size set to 16 kB. This should be enough for most use with three handles (that is how many we allow at the moment). Parametrize the buffer size while doing this, so that it is easier to revisit this later on if required. Cc: stable@vger.kernel.org Reported-by: Stefan Berger <stefanb@linux.ibm.com> Fixes: 745b361e989a ("tpm: infrastructure for TPM spaces") Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com> Tested-by: Stefan Berger <stefanb@linux.ibm.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2020-07-24ARM: dts: aspeed: wedge40: Enable pwm_tacho deviceTao Ren
Enable pwm_tacho device for fan control and monitoring in Wedge40. Signed-off-by: Tao Ren <rentao.bupt@gmail.com> Signed-off-by: Joel Stanley <joel@jms.id.au>
2020-07-24ARM: dts: aspeed: wedge40: Enable ADC deviceTao Ren
Enable ADC controller and corresponding voltage sensoring channels for Wedge40. Signed-off-by: Tao Ren <rentao.bupt@gmail.com> Signed-off-by: Joel Stanley <joel@jms.id.au>
2020-07-24ARM: dts: aspeed: wedge40: Disable unused i2c controllersTao Ren
Disable i2c bus #9, #10 and #13 as these i2c controllers are not used on Wedge40. Signed-off-by: Tao Ren <rentao.bupt@gmail.com> Signed-off-by: Joel Stanley <joel@jms.id.au>
2020-07-24ARM: dts: aspeed: cmm: Fixup I2C treeTao Ren
Create all the i2c switches in device tree and use aliases to assign child channels with consistent bus numbers. Besides, "i2c-mux-idle-disconnect" is set for all the i2c switches to avoid potential conflicts when multiple devices (beind the switches) use the same device address. Signed-off-by: Tao Ren <rentao.bupt@gmail.com> Reviewed-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Joel Stanley <joel@jms.id.au>
2020-07-24ARM: dts: aspeed: tacoma: Add CFAM reset GPIOJoel Stanley
The GPIO on Q0 is used for resetting the CFAM of the processor that the ASPEED master is connected to. Reviewed-by: Andrew Jeffery <andrew@aj.id.au> Signed-off-by: Joel Stanley <joel@jms.id.au>
2020-07-24ARM: dts: aspeed: rainier: Add CFAM reset GPIOJoel Stanley
The GPIO on Q0 is used for resetting the CFAM of the processor that the ASPEED master is connected to. The signal is wired as active high on the first pass systems. Reviewed-by: Andrew Jeffery <andrew@aj.id.au> Signed-off-by: Joel Stanley <joel@jms.id.au>
2020-07-24tpm: Require that all digests are present in TCG_PCR_EVENT2 structuresTyler Hicks
Require that the TCG_PCR_EVENT2.digests.count value strictly matches the value of TCG_EfiSpecIdEvent.numberOfAlgorithms in the event field of the TCG_PCClientPCREvent event log header. Also require that TCG_EfiSpecIdEvent.numberOfAlgorithms is non-zero. The TCG PC Client Platform Firmware Profile Specification section 9.1 (Family "2.0", Level 00 Revision 1.04) states: For each Hash algorithm enumerated in the TCG_PCClientPCREvent entry, there SHALL be a corresponding digest in all TCG_PCR_EVENT2 structures. Note: This includes EV_NO_ACTION events which do not extend the PCR. Section 9.4.5.1 provides this description of TCG_EfiSpecIdEvent.numberOfAlgorithms: The number of Hash algorithms in the digestSizes field. This field MUST be set to a value of 0x01 or greater. Enforce these restrictions, as required by the above specification, in order to better identify and ignore invalid sequences of bytes at the end of an otherwise valid TPM2 event log. Firmware doesn't always have the means necessary to inform the kernel of the actual event log size so the kernel's event log parsing code should be stringent when parsing the event log for resiliency against firmware bugs. This is true, for example, when firmware passes the event log to the kernel via a reserved memory region described in device tree. POWER and some ARM systems use the "linux,sml-base" and "linux,sml-size" device tree properties to describe the memory region used to pass the event log from firmware to the kernel. Unfortunately, the "linux,sml-size" property describes the size of the entire reserved memory region rather than the size of the event long within the memory region and the event log format does not include information describing the size of the event log. tpm_read_log_of(), in drivers/char/tpm/eventlog/of.c, is where the "linux,sml-size" property is used. At the end of that function, log->bios_event_log_end is pointing at the end of the reserved memory region. That's typically 0x10000 bytes offset from "linux,sml-base", depending on what's defined in the device tree source. The firmware event log only fills a portion of those 0x10000 bytes and the rest of the memory region should be zeroed out by firmware. Even in the case of a properly zeroed bytes in the remainder of the memory region, the only thing allowing the kernel's event log parser to detect the end of the event log is the following conditional in __calc_tpm2_event_size(): if (event_type == 0 && event_field->event_size == 0) size = 0; If that wasn't there, __calc_tpm2_event_size() would think that a 16 byte sequence of zeroes, following an otherwise valid event log, was a valid event. However, problems can occur if a single bit is set in the offset corresponding to either the TCG_PCR_EVENT2.eventType or TCG_PCR_EVENT2.eventSize fields, after the last valid event log entry. This could confuse the parser into thinking that an additional entry is present in the event log and exposing this invalid entry to userspace in the /sys/kernel/security/tpm0/binary_bios_measurements file. Such problems have been seen if firmware does not fully zero the memory region upon a warm reboot. This patch significantly raises the bar on how difficult it is for stale/invalid memory to confuse the kernel's event log parser but there's still, ultimately, a reliance on firmware to properly initialize the remainder of the memory region reserved for the event log as the parser cannot be expected to detect a stale but otherwise properly formatted firmware event log entry. Fixes: fd5c78694f3f ("tpm: fix handling of the TPM 2.0 event logs") Signed-off-by: Tyler Hicks <tyhicks@linux.microsoft.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2020-07-24opp: Allow disabled OPPs in dev_pm_opp_get_freq()Andrew-sh.Cheng
Allow dev_pm_opp_get_freq() to work for disabled OPPs. Signed-off-by: Andrew-sh.Cheng <andrew-sh.cheng@mediatek.com> [ Viresh: Massaged commit log ] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2020-07-24opp: ti-opp-supply: Replace HTTP links with HTTPS onesAlexander A. Klimov
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2020-07-24opp: core: Add missing export for dev_pm_opp_adjust_voltageValdis Klētnieks
Export dev_pm_opp_adjust_voltage() as it may be used by modules later on. Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu> [ Viresh: Rewrote commit log ] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2020-07-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller
Pablo Neira Ayuso says: ==================== Netfilter/IPVS fixes for net The following patchset contains Netfilter/IPVS fixes for net: 1) Fix NAT hook deletion when table is dormant, from Florian Westphal. 2) Fix IPVS sync stalls, from guodeqing. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-23geneve: fix an uninitialized value in geneve_changelink()Cong Wang
geneve_nl2info() sets 'df' conditionally, so we have to initialize it by copying the value from existing geneve device in geneve_changelink(). Fixes: 56c09de347e4 ("geneve: allow changing DF behavior after creation") Reported-by: syzbot+7ebc2e088af5e4c0c9fa@syzkaller.appspotmail.com Cc: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-23bonding: check return value of register_netdevice() in bond_newlink()Cong Wang
Very similar to commit 544f287b8495 ("bonding: check error value of register_netdevice() immediately"), we should immediately check the return value of register_netdevice() before doing anything else. Fixes: 005db31d5f5f ("bonding: set carrier off for devices created through netlink") Reported-and-tested-by: syzbot+bbc3a11c4da63c1b74d6@syzkaller.appspotmail.com Cc: Beniamino Galvani <bgalvani@redhat.com> Cc: Taehee Yoo <ap420073@gmail.com> Cc: Jay Vosburgh <j.vosburgh@gmail.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-23dt-bindings: phy: ti: phy-gmii-sel: convert bindings to json-schemaGrygorii Strashko
Convert the CPSW Port's Interface Mode Selection PHY bindings documentation to json-schema. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Link: https://lore.kernel.org/r/20200721225247.31034-1-grygorii.strashko@ti.com Signed-off-by: Rob Herring <robh@kernel.org>
2020-07-23dt-bindings: mux: mux.h: drop a duplicated wordRandy Dunlap
Drop the repeated word "the" in a comment. Cc: Peter Rosin <peda@axentia.se> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20200719002816.20263-1-rdunlap@infradead.org Signed-off-by: Rob Herring <robh@kernel.org>
2020-07-23dt-bindings: misc: Convert olpc,xo1.75-ec to json-schemaLubomir Rintel
Convert the OLPC XO-1.75 Embedded Controller binding to DT schema format using json-schema. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Link: https://lore.kernel.org/r/20200718211244.187938-1-lkundrak@v3.sk Signed-off-by: Rob Herring <robh@kernel.org>
2020-07-23CREDITS: Replace HTTP links with HTTPS onesAlexander A. Klimov
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200714175528.46712-1-grandmaster@al2klimov.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs: process: Add an example for creating a fixes tagTom Rix
To make it a little clearer how to create a fixes tag, add an example based on the preceeding gitconfig setup. Signed-off-by: Tom Rix <trix@redhat.com> Link: https://lore.kernel.org/r/20200710200115.21176-1-trix@redhat.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23doc/zh_CN: add Chinese translation prefer sectionAlex Shi
The add words is: Tranlation plan: Welcome for any part of kernel doc Chinese translation, expecially for admin-guide part. Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com> Cc: Harry Wei <harryxiyou@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: linux-kernel@vger.kernel.org Link: https://lore.kernel.org/r/20200713115807.56362-3-alex.shi@linux.alibaba.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23doc/zh_CN: add clearing-warn-once Chinese versionAlex Shi
and link it into admin-guide. Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com> Cc: Harry Wei <harryxiyou@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: linux-kernel@vger.kernel.org Link: https://lore.kernel.org/r/20200713115807.56362-2-alex.shi@linux.alibaba.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23doc/zh_CN: add admin-guide indexAlex Shi
Translate the admin-guide index.rst file into Chinese. and link it into Chinese top index file. Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com> Cc: Harry Wei <harryxiyou@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: linux-kernel@vger.kernel.org Link: https://lore.kernel.org/r/20200713115807.56362-1-alex.shi@linux.alibaba.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23Revert "cifs: Fix the target file was deleted when rename failed."Steve French
This reverts commit 9ffad9263b467efd8f8dc7ae1941a0a655a2bab2. Upon additional testing with older servers, it was found that the original commit introduced a regression when using the old SMB1 dialect and rsyncing over an existing file. The patch will need to be respun to address this, likely including a larger refactoring of the SMB1 and SMB3 rename code paths to make it less confusing and also to address some additional rename error cases that SMB3 may be able to workaround. Signed-off-by: Steve French <stfrench@microsoft.com> Reported-by: Patrick Fernie <patrick.fernie@gmail.com> CC: Stable <stable@vger.kernel.org> Acked-by: Ronnie Sahlberg <lsahlber@redhat.com> Acked-by: Pavel Shilovsky <pshilov@microsoft.com> Acked-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
2020-07-23doc:it_IT: process: coding-style.rst: Correct __maybe_unused compiler labelLee Jones
Flag is __maybe_unused, not __maybe_used. Cc: Federico Vaga <federico.vaga@vaga.pv.it> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: clang-built-linux@googlegroups.com Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20200715122328.3882187-1-lee.jones@linaro.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23Merge tag 's390-5.8-6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux into master Pull s390 fixes from Heiko Carstens: - Change cpum_cf/perf counter name from DFLT_CCERROR to DFLT_CCFINISH to reflect reality and avoid further confusion. This is a user space visible change therefore the commit has also a stable tag for 5.7, where this counter was introduced. - Add Matthew Rosato as s390 IOMMU maintainer. * tag 's390-5.8-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: MAINTAINERS: add Matthew for s390 IOMMU s390/cpum_cf,perf: change DFLT_CCERROR counter name
2020-07-23futex: MAINTAINERS: Re-add selftests directoryAndré Almeida
Commit 95ca6d73a8a97 ("docs: move locking-specific documents to locking/") accidentally replaced the selftests line for a duplicated documentation one. Revert this change. Signed-off-by: André Almeida <andrealmeid@collabora.com> Fixes: 95ca6d73a8a97 ("docs: move locking-specific documents to locking/") Link: https://lore.kernel.org/r/20200715131036.9692-1-andrealmeid@collabora.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs: timers: drop documentation about LB_BIASJulia Lawall
The LB_BIAS feature was removed in commit 1c1b8a7b03ef ("sched/fair: Replace source_load() & target_load() with weighted_cpuload()"), so drop the mention that it is disabled in the no_hz case. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Link: https://lore.kernel.org/r/1595088518-28116-1-git-send-email-Julia.Lawall@inria.fr Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs: core-api/printk-formats.rst: use literal block syntaxDaniel W. S. Almeida
Fix the following warning: WARNING: Definition list ends without a blank line; unexpected unindent. By switching to the literal block syntax. Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> Link: https://lore.kernel.org/r/20200718165107.625847-8-dwlsalmeida@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs: bpf/bpf_devel_QA.rst: fix reference to nonexistent documentDaniel W. S. Almeida
Fix the following sphinx warning: bpf_devel_QA.rst:444: WARNING: Unknown target name: "documentation/bpf/btf.rst" No target was defined for 'btf.rst' in the document. Fix it. Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> Link: https://lore.kernel.org/r/20200718165107.625847-6-dwlsalmeida@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23i2c: i2c-qcom-geni: Fix DMA transfer raceDouglas Anderson
When I have KASAN enabled on my kernel and I start stressing the touchscreen my system tends to hang. The touchscreen is one of the only things that does a lot of big i2c transfers and ends up hitting the DMA paths in the geni i2c driver. It appears that KASAN adds enough delay in my system to tickle a race condition in the DMA setup code. When the system hangs, I found that it was running the geni_i2c_irq() over and over again. It had these: m_stat = 0x04000080 rx_st = 0x30000011 dm_tx_st = 0x00000000 dm_rx_st = 0x00000000 dma = 0x00000001 Notably we're in DMA mode but are getting M_RX_IRQ_EN and M_RX_FIFO_WATERMARK_EN over and over again. Putting some traces in geni_i2c_rx_one_msg() showed that when we failed we were getting to the start of geni_i2c_rx_one_msg() but were never executing geni_se_rx_dma_prep(). I believe that the problem here is that we are starting the geni command before we run geni_se_rx_dma_prep(). If a transfer makes it far enough before we do that then we get into the state I have observed. Let's change the order, which seems to work fine. Although problems were seen on the RX path, code inspection suggests that the TX should be changed too. Change it as well. Fixes: 37692de5d523 ("i2c: i2c-qcom-geni: Add bus driver for the Qualcomm GENI I2C controller") Signed-off-by: Douglas Anderson <dianders@chromium.org> Tested-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Reviewed-by: Akash Asthana <akashast@codeaurora.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Reviewed-by: Mukesh Kumar Savaliya <msavaliy@codeaurora.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2020-07-23docs: process/index.rst: Fix reference to nonexistent documentDaniel W. S. Almeida
Fix the following warning: WARNING: toctree contains reference to nonexistent document 'process/unaligned-memory-access' The path to the document was wrong. Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> Link: https://lore.kernel.org/r/20200718165107.625847-5-dwlsalmeida@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23i2c: rcar: always clear ICSAR to avoid side effectsWolfram Sang
On R-Car Gen2, we get a timeout when reading from the address set in ICSAR, even though the slave interface is disabled. Clearing it fixes this situation. Note that Gen3 is not affected. To reproduce: bind and undbind an I2C slave on some bus, run 'i2cdetect' on that bus. Fixes: de20d1857dd6 ("i2c: rcar: add slave support") Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2020-07-23docs: staging/tee.rst: convert into definition listDaniel W. S. Almeida
Fix the following warnings: tee.rst:65: WARNING: Unexpected indentation. tee.rst:69: WARNING: Block quote ends without a blank line; unexpected unindent. By switching to the 'definition list' syntax. Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> Link: https://lore.kernel.org/r/20200718165107.625847-4-dwlsalmeida@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs: admin-guide/mm/index: Fix reference to nonexistent documentDaniel W. S. Almeida
Fix the following warning: WARNING: toctree contains reference to nonexistent document 'admin-guide/mm/nommu-map' This was due to a typo. Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> Link: https://lore.kernel.org/r/20200718165107.625847-1-dwlsalmeida@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs: admin-guide/index.rst: Add pstore-blk.rstDaniel W. S. Almeida
Fix the following warning: Documentation/admin-guide/pstore-blk.rst: WARNING: document isn't included in any toctree By adding 'pstore-blk.rst' to the index Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> Link: https://lore.kernel.org/r/20200718165107.625847-9-dwlsalmeida@gmail.com Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs: bpf/index.rst: Add ringbuf.rstDaniel W. S. Almeida
Fix the following warning Documentation/bpf/ringbuf.rst: WARNING: document isn't included in any toctree By adding it to the index. Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> Link: https://lore.kernel.org/r/20200718165107.625847-10-dwlsalmeida@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs: trace/index.rst: add histogram-design.rstDaniel W. S. Almeida
Fix the following warning: Documentation/trace/histogram-design.rst: WARNING: document isn't included in any toctree By adding 'histogram-design.rst' to the index. Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> Link: https://lore.kernel.org/r/20200718165107.625847-12-dwlsalmeida@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs: index.rst: Add watch_queueDaniel W. S. Almeida
Fix the following sphinx warning: Documentation/watch_queue.rst: WARNING: document isn't included in any toctree By adding watch_queue.rst to the index. Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> Link: https://lore.kernel.org/r/20200718165107.625847-13-dwlsalmeida@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs/core-api: memory-allocation: describe reclaim behaviourMike Rapoport
Changelog of commit dcda9b04713c ("mm, tree wide: replace __GFP_REPEAT by __GFP_RETRY_MAYFAIL with more useful semantic") has very nice description of GFP flags that affect reclaim behaviour of the page allocator. It would be pity to keep this description buried in the log so let's expose it in the Documentation/ as well. Cc: Michal Hocko <mhocko@suse.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Link: https://lore.kernel.org/r/20200719153641.231131-1-rppt@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23Documentation: driver-api: update kernel connectorWang Long
This patch changes: 1) Fix typo in kernel connector documentation. s/cn_netlink_send_multi/cn_netlink_send_mult/ 2) update definition of struct cn_msg Signed-off-by: Wang Long <w@laoqinren.net> Link: https://lore.kernel.org/r/1595229852-114071-1-git-send-email-w@laoqinren.net Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23arm64: Replace HTTP links with HTTPS onesAlexander A. Klimov
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200720211231.63831-1-grandmaster@al2klimov.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs/mm: concepts.rst: remove unnecessary wordBhaskar Chowdhury
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Link: https://lore.kernel.org/r/20200721112251.6100-1-unixbhaskar@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs: Move kprobes.rst from staging/ to trace/Naveen N. Rao
Kprobes contitutes a dynamic tracing technology and as such can be moved alongside documentation of other tracing technologies. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Link: https://lore.kernel.org/r/8a09c01c64b2e003d5486c4f0c89740618f1bae4.1595331824.git.naveen.n.rao@linux.vnet.ibm.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs: staging/kprobes.rst: Move references to a separate appendixNaveen N. Rao
Kprobes references are currently listed right after kretprobes example, and appears to be part of the same section. Move this out to a separate appendix for clarity. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Link: https://lore.kernel.org/r/2bba61cd60eec87fbcca3e4343b7f95afa1178cd.1595331824.git.naveen.n.rao@linux.vnet.ibm.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23docs: staging/kprobes.rst: Update some of the referencesNaveen N. Rao
Some of the kprobes references are not valid anymore. Update the URLs to point to their changed locations, where appropriate. Drop two URLs which do not exist anymore. Reported-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Link: https://lore.kernel.org/r/ae96223716e61185870244d8f9dff6678de12fa1.1595331824.git.naveen.n.rao@linux.vnet.ibm.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23Documentation: fix typo for core-api/cpu_hotplug documentationYaohui Wang
fix typo for core-api/cpu_hotplug documentation Signed-off-by: Yaohui Wang <dillionmango@gmail.com> Link: https://lore.kernel.org/r/20200722073818.20605-1-dillionmango@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23Documentation: fb, fix path to modedb.cJiri Slaby
modedb.c was moved twice since the modedb documentation was written. Update the path to the current one. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20200723103454.26167-1-jslaby@suse.cz Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-23tcp: allow at most one TLP probe per flightYuchung Cheng
Previously TLP may send multiple probes of new data in one flight. This happens when the sender is cwnd limited. After the initial TLP containing new data is sent, the sender receives another ACK that acks partial inflight. It may re-arm another TLP timer to send more, if no further ACK returns before the next TLP timeout (PTO) expires. The sender may send in theory a large amount of TLP until send queue is depleted. This only happens if the sender sees such irregular uncommon ACK pattern. But it is generally undesirable behavior during congestion especially. The original TLP design restrict only one TLP probe per inflight as published in "Reducing Web Latency: the Virtue of Gentle Aggression", SIGCOMM 2013. This patch changes TLP to send at most one probe per inflight. Note that if the sender is app-limited, TLP retransmits old data and did not have this issue. Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-23AX.25: Prevent integer overflows in connect and sendmsgDan Carpenter
We recently added some bounds checking in ax25_connect() and ax25_sendmsg() and we so we removed the AX25_MAX_DIGIS checks because they were no longer required. Unfortunately, I believe they are required to prevent integer overflows so I have added them back. Fixes: 8885bb0621f0 ("AX.25: Prevent out-of-bounds read in ax25_sendmsg()") Fixes: 2f2a7ffad5c6 ("AX.25: Fix out-of-bounds read in ax25_connect()") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-23Merge tag 'timers-v5.9' of ↵Thomas Gleixner
https://git.linaro.org/people/daniel.lezcano/linux into timers/core Pull clock event/surce driver changes from Daniel Lezcano: - Add sama5d2 support and rework the 32kHz clock handling (Alexandre Belloni) - Add the high resolution support for SMP/SMT on the Ingenic timer (Zhou Yanjie) - Add support for i.MX TPM driver with ARM64 (Anson Huang) - Fix typo by replacing KHz to kHz (Geert Uytterhoeven) - Add 32kHz support by setting the minimum ticks to 5 on Nomadik MTU (Linus Walleij) - Replace HTTP links with HTTPS ones for security reasons (Alexander A. Klimov) - Add support for the Ingenic X1000 OST (Zhou Yanjie)
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