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2022-01-10Merge branches 'pm-cpuidle', 'pm-core' and 'pm-sleep'Rafael J. Wysocki4-30/+58
Merge cpuidle updates, PM core updates and one hiberation-related update for 5.17-rc1: - Make cpuidle use default_groups in kobj_type (Greg Kroah-Hartman). - Fix two comments in cpuidle code (Jason Wang, Yang Li). - Simplify locking in pm_runtime_put_suppliers() (Rafael Wysocki). - Add safety net to supplier device release in the runtime PM core code (Rafael Wysocki). - Capture device status before disabling runtime PM for it (Rafael Wysocki). - Add new macros for declaring PM operations to allow drivers to avoid guarding them with CONFIG_PM #ifdefs or __maybe_unused and update some drivers to use these macros (Paul Cercueil). - Allow ACPI hardware signature to be honoured during restore from hibernation (David Woodhouse). * pm-cpuidle: cpuidle: use default_groups in kobj_type cpuidle: Fix cpuidle_remove_state_sysfs() kerneldoc comment cpuidle: menu: Fix typo in a comment * pm-core: PM: runtime: Simplify locking in pm_runtime_put_suppliers() mmc: mxc: Use the new PM macros mmc: jz4740: Use the new PM macros PM: runtime: Add safety net to supplier device release PM: runtime: Capture device status before disabling runtime PM PM: core: Add new *_PM_OPS macros, deprecate old ones PM: core: Redefine pm_ptr() macro r8169: Avoid misuse of pm_ptr() macro * pm-sleep: PM: hibernate: Allow ACPI hardware signature to be honoured
2022-01-10Merge branch 'pm-cpufreq'Rafael J. Wysocki2-5/+5
Merge cpufreq updates for 5.17-rc1: - Add new P-state driver for AMD processors (Huang Rui). - Fix initialization of min and max frequency QoS requests in the cpufreq core (Rafael Wysocki). - Fix EPP handling on Alder Lake in intel_pstate (Srinivas Pandruvada). - Make intel_pstate update cpuinfo.max_freq when notified of HWP capabilities changes and drop a redundant function call from that driver (Rafael Wysocki). - Improve IRQ support in the Qcom cpufreq driver (Ard Biesheuvel, Stephen Boyd, Vladimir Zapolskiy). - Fix double devm_remap() in the Mediatek cpufreq driver (Hector Yuan). - Introduce thermal pressure helpers for cpufreq CPU cooling (Lukasz Luba). - Make cpufreq use default_groups in kobj_type (Greg Kroah-Hartman). * pm-cpufreq: (32 commits) x86, sched: Fix undefined reference to init_freq_invariance_cppc() build error cpufreq: amd-pstate: Fix Kconfig dependencies for AMD P-State cpufreq: amd-pstate: Fix struct amd_cpudata kernel-doc comment MAINTAINERS: Add AMD P-State driver maintainer entry Documentation: amd-pstate: Add AMD P-State driver introduction cpufreq: amd-pstate: Add AMD P-State performance attributes cpufreq: amd-pstate: Add AMD P-State frequencies attributes cpufreq: amd-pstate: Add boost mode support for AMD P-State cpufreq: amd-pstate: Add trace for AMD P-State module cpufreq: amd-pstate: Introduce the support for the processors with shared memory solution cpufreq: amd-pstate: Add fast switch function for AMD P-State cpufreq: amd-pstate: Introduce a new AMD P-State driver to support future processors ACPI: CPPC: Add CPPC enable register function ACPI: CPPC: Check present CPUs for determining _CPC is valid ACPI: CPPC: Implement support for SystemIO registers x86/msr: Add AMD CPPC MSR definitions x86/cpufeatures: Add AMD Collaborative Processor Performance Control feature flag cpufreq: use default_groups in kobj_type cpufreq: mediatek-hw: Fix double devm_remap in hotplug case cpufreq: intel_pstate: Update cpuinfo.max_freq on HWP_CAP changes ...
2022-01-10Merge tag 'arm64-upstream' of ↵Linus Torvalds3-17/+29
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Catalin Marinas: - KCSAN enabled for arm64. - Additional kselftests to exercise the syscall ABI w.r.t. SVE/FPSIMD. - Some more SVE clean-ups and refactoring in preparation for SME support (scalable matrix extensions). - BTI clean-ups (SYM_FUNC macros etc.) - arm64 atomics clean-up and codegen improvements. - HWCAPs for FEAT_AFP (alternate floating point behaviour) and FEAT_RPRESS (increased precision of reciprocal estimate and reciprocal square root estimate). - Use SHA3 instructions to speed-up XOR. - arm64 unwind code refactoring/unification. - Avoid DC (data cache maintenance) instructions when DCZID_EL0.DZP == 1 (potentially set by a hypervisor; user-space already does this). - Perf updates for arm64: support for CI-700, HiSilicon PCIe PMU, Marvell CN10K LLC-TAD PMU, miscellaneous clean-ups. - Other fixes and clean-ups; highlights: fix the handling of erratum 1418040, correct the calculation of the nomap region boundaries, introduce io_stop_wc() mapped to the new DGH instruction (data gathering hint). * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (81 commits) arm64: Use correct method to calculate nomap region boundaries arm64: Drop outdated links in comments arm64: perf: Don't register user access sysctl handler multiple times drivers: perf: marvell_cn10k: fix an IS_ERR() vs NULL check perf/smmuv3: Fix unused variable warning when CONFIG_OF=n arm64: errata: Fix exec handling in erratum 1418040 workaround arm64: Unhash early pointer print plus improve comment asm-generic: introduce io_stop_wc() and add implementation for ARM64 arm64: Ensure that the 'bti' macro is defined where linkage.h is included arm64: remove __dma_*_area() aliases docs/arm64: delete a space from tagged-address-abi arm64: Enable KCSAN kselftest/arm64: Add pidbench for floating point syscall cases arm64/fp: Add comments documenting the usage of state restore functions kselftest/arm64: Add a test program to exercise the syscall ABI kselftest/arm64: Allow signal tests to trigger from a function kselftest/arm64: Parameterise ptrace vector length information arm64/sve: Minor clarification of ABI documentation arm64/sve: Generalise vector length configuration prctl() for SME arm64/sve: Make sysctl interface for SVE reusable by SME ...
2022-01-10Merge tag 'drivers-5.17' of ↵Linus Torvalds3-0/+19
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC driver updates from Arnd Bergmann: "There are cleanups and minor bugfixes across several SoC specific drivers, for Qualcomm, Samsung, NXP i.MX, AT91, Tegra, Keystone, Renesas, ZynqMP Noteworthy new features are: - The op-tee firmware driver gains support for asynchronous notifications from secure-world firmware. - Qualcomm platforms gain support for new SoC types in various drivers: power domain, cache controller, RPM sleep, soc-info - Samsung SoC drivers gain support for new SoCs in ChipID and PMU, as well as a new USIv2 driver that handles various types of serial communiction (uart, i2c, spi) - Renesas adds support for R-Car S4-8 (R8A779F0) in multiple drivers, as well as memory controller support for RZ/G2L (R9A07G044). - Apple M1 gains support for the PMGR power management driver" * tag 'drivers-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (94 commits) soc: qcom: rpmh-rsc: Fix typo in a comment soc: qcom: socinfo: Add SM6350 and SM7225 dt-bindings: arm: msm: Don't mark LLCC interrupt as required dt-bindings: firmware: scm: Add SM6350 compatible dt-bindings: arm: msm: Add LLCC for SM6350 soc: qcom: rpmhpd: Sort power-domain definitions and lists soc: qcom: rpmhpd: Remove mx/cx relationship on sc7280 soc: qcom: rpmhpd: Rename rpmhpd struct names soc: qcom: rpmhpd: sm8450: Add the missing .peer for sm8450_cx_ao soc: qcom: socinfo: add SM8450 ID soc: qcom: rpmhpd: Add SM8450 power domains dt-bindings: power: rpmpd: Add SM8450 to rpmpd binding soc: qcom: smem: Update max processor count dt-bindings: arm: qcom: Document SM8450 SoC and boards dt-bindings: firmware: scm: Add SM8450 compatible dt-bindings: arm: cpus: Add kryo780 compatible soc: qcom: rpmpd: Add support for sm6125 dt-bindings: qcom-rpmpd: Add sm6125 power domains soc: qcom: aoss: constify static struct thermal_cooling_device_ops PM: AVS: qcom-cpr: Use div64_ul instead of do_div ...
2022-01-10Merge tag 'soc-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/socLinus Torvalds1-21/+0
Pull ARM SoC updates from Arnd Bergmann: "These are all minor bug fixes and cleanups to code in arch/arm and arch/arm64 that is specific to one SoC, updating Kconfig symbols, the MAINTAINERS file, and removing some dead code" * tag 'soc-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: arm64: exynos: Enable Exynos Multi-Core Timer driver ARM: ixp4xx: remove unused header file pata_ixp4xx_cf.h ARM: ixp4xx: remove dead configs CPU_IXP43X and CPU_IXP46X MAINTAINERS: Add Florian as BCM5301X and BCM53573 maintainer ARM: samsung: Remove HAVE_S3C2410_I2C and use direct dependencies ARM: imx: rename DEBUG_IMX21_IMX27_UART to DEBUG_IMX27_UART ARM: imx: remove dead left-over from i.MX{27,31,35} removal ARM: s3c: add one more "fallthrough" statement in Jive ARM: s3c: include header for prototype of s3c2410_modify_misccr ARM: shmobile: rcar-gen2: Add missing of_node_put()
2022-01-10Merge tag 'irqchip-5.17' of ↵Thomas Gleixner1-1/+3
git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core Pull irqchip updates from Marc Zyngier: - Fix GICv3 redistributor table reservation with RT across kexec - Fix GICv4.1 redistributor view of the VPE table across kexec - Add support for extra interrupts on spear-shirq - Make obtaining some interrupts optional for the Renesas drivers - Various cleanups and bug fixes Link: https://lore.kernel.org/lkml/[email protected]
2022-01-10Merge tag 'timers-v5.17-rc1' of ↵Thomas Gleixner1-0/+20
https://git.linaro.org/people/daniel.lezcano/linux into timers/core Pull clocksource/events updates from Daniel Lezcano: - Refactor resource allocation on the Exynos_mct driver without functional changes (Marek Szyprowski) - Add imx8ulp compatible string for NPX TPM driver (Jacky Bai) - Fix comma introduced by error by replacing it by the initial semicolon on the Exynos_mct (Will Deacon) - Add OSTM driver support on Renesas. The reset line must be deasserted before accessing the registers. This change depends on an external change resulting in a shared immutable branch 'reset/of-get-optional-exclusive' from git://git.pengutronix.de/pza/linux (Biju Das) - Make the OSTM Kconfig option visible to user in order to let him disable it when ARM architected timers is enabled (Biju Das) - Tag two variables on iMX sysctr _ro_afterinit (Peng Fan) - Set the cpumask to cpu_possible_mask in order to have full benefit of the DYNIRQ flag on iMX sysctr (Peng Fan) - Tag __maybe_unused a variable in the Pistachio timer driver in order to fix a warning reported by the kernel test robot (Drew Fustini) - Add MStar MSC313e timer support and the ssd20xd-based variant, as well as the DT bindings (Romain Perier) - Remove the incompatible compatible string for the rk3066 (Johan Jonker) - Fix dts_check warnings on the cadence ttc driver by adding the power domain bindings (Michal Simek) Link: https://lore.kernel.org/lkml/[email protected]
2022-01-10nfs: Implement cache I/O by accessing the cache directlyDavid Howells1-0/+28
Move NFS to using fscache DIO API instead of the old upstream I/O API as that has been removed. This is a stopgap solution as the intention is that at sometime in the future, the cache will move to using larger blocks and won't be able to store individual pages in order to deal with the potential for data corruption due to the backing filesystem being able insert/remove bridging blocks of zeros into its extent list[1]. NFS then reads and writes cache pages synchronously and one page at a time. The preferred change would be to use the netfs lib, but the new I/O API can be used directly. It's just that as the cache now needs to track data for itself, caching blocks may exceed page size... This code is somewhat borrowed from my "fallback I/O" patchset[2]. Changes ======= ver #3: - Restore lost =n fallback for nfs_fscache_release_page()[2]. Signed-off-by: David Howells <[email protected]> Tested-by: Dave Wysochanski <[email protected]> Acked-by: Jeff Layton <[email protected]> cc: Trond Myklebust <[email protected]> cc: Anna Schumaker <[email protected]> cc: [email protected] cc: [email protected] Link: https://lore.kernel.org/r/[email protected] [1] Link: https://lore.kernel.org/r/[email protected]/ [2] Link: https://lore.kernel.org/r/163189108292.2509237.12615909591150927232.stgit@warthog.procyon.org.uk/ [2] Link: https://lore.kernel.org/r/163906981318.143852.17220018647843475985.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/163967184451.1823006.6450645559828329590.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/164021577632.640689.11069627070150063812.stgit@warthog.procyon.org.uk/ # v4
2022-01-10nfs: Convert to new fscache volume/cookie APIDave Wysochanski2-8/+2
Change the nfs filesystem to support fscache's indexing rewrite and reenable caching in nfs. The following changes have been made: (1) The fscache_netfs struct is no more, and there's no need to register the filesystem as a whole. (2) The session cookie is now an fscache_volume cookie, allocated with fscache_acquire_volume(). That takes three parameters: a string representing the "volume" in the index, a string naming the cache to use (or NULL) and a u64 that conveys coherency metadata for the volume. For nfs, I've made it render the volume name string as: "nfs,<ver>,<family>,<address>,<port>,<fsidH>,<fsidL>*<,param>[,<uniq>]" (3) The fscache_cookie_def is no more and needed information is passed directly to fscache_acquire_cookie(). The cache no longer calls back into the filesystem, but rather metadata changes are indicated at other times. fscache_acquire_cookie() is passed the same keying and coherency information as before. (4) fscache_enable/disable_cookie() have been removed. Call fscache_use_cookie() and fscache_unuse_cookie() when a file is opened or closed to prevent a cache file from being culled and to keep resources to hand that are needed to do I/O. If a file is opened for writing, we invalidate it with FSCACHE_INVAL_DIO_WRITE in lieu of doing writeback to the cache, thereby making it cease caching until all currently open files are closed. This should give the same behaviour as the uptream code. Making the cache store local modifications isn't straightforward for NFS, so that's left for future patches. (5) fscache_invalidate() now needs to be given uptodate auxiliary data and a file size. It also takes a flag to indicate if this was due to a DIO write. (6) Call nfs_fscache_invalidate() with FSCACHE_INVAL_DIO_WRITE on a file to which a DIO write is made. (7) Call fscache_note_page_release() from nfs_release_page(). (8) Use a killable wait in nfs_vm_page_mkwrite() when waiting for PG_fscache to be cleared. (9) The functions to read and write data to/from the cache are stubbed out pending a conversion to use netfslib. Changes ======= ver #3: - Added missing =n fallback for nfs_fscache_release_file()[1][2]. ver #2: - Use gfpflags_allow_blocking() rather than using flag directly. - fscache_acquire_volume() now returns errors. - Remove NFS_INO_FSCACHE as it's no longer used. - Need to unuse a cookie on file-release, not inode-clear. Signed-off-by: Dave Wysochanski <[email protected]> Co-developed-by: David Howells <[email protected]> Signed-off-by: David Howells <[email protected]> Tested-by: Dave Wysochanski <[email protected]> Acked-by: Jeff Layton <[email protected]> cc: Trond Myklebust <[email protected]> cc: Anna Schumaker <[email protected]> cc: [email protected] cc: [email protected] Link: https://lore.kernel.org/r/[email protected]/ [1] Link: https://lore.kernel.org/r/[email protected]/ [2] Link: https://lore.kernel.org/r/163819668938.215744.14448852181937731615.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/163906979003.143852.2601189243864854724.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/163967182112.1823006.7791504655391213379.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/164021575950.640689.12069642327533368467.stgit@warthog.procyon.org.uk/ # v4
2022-01-10Merge branch 'for-5.17/letsketch' into for-linusJiri Kosina11-31/+75
- new driver to support for LetSketch device (Hans de Goede)
2022-01-10Merge branch 'for-5.17/hidraw' into for-linusJiri Kosina14-52/+123
- locking performance improvement for hidraw code (André Almeida)
2022-01-10Merge branch 'for-5.17/core' into for-linusJiri Kosina133-2859/+4216
- support for USI style pens (Tero Kristo, Mika Westerberg) - quirk for devices that need inverted X/Y axes (Alistair Francis) - small core code cleanups and deduplication (Benjamin Tissoires)
2022-01-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski1-1/+3
Merge in fixes directly in prep for the 5.17 merge window. No conflicts. Signed-off-by: Jakub Kicinski <[email protected]>
2022-01-09net: skb: use kfree_skb_reason() in __udp4_lib_rcv()Menglong Dong1-0/+1
Replace kfree_skb() with kfree_skb_reason() in __udp4_lib_rcv. New drop reason 'SKB_DROP_REASON_UDP_CSUM' is added for udp csum error. Signed-off-by: Menglong Dong <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]>
2022-01-09net: skb: use kfree_skb_reason() in tcp_v4_rcv()Menglong Dong1-0/+4
Replace kfree_skb() with kfree_skb_reason() in tcp_v4_rcv(). Following drop reasons are added: SKB_DROP_REASON_NO_SOCKET SKB_DROP_REASON_PKT_TOO_SMALL SKB_DROP_REASON_TCP_CSUM SKB_DROP_REASON_TCP_FILTER After this patch, 'kfree_skb' event will print message like this: $ TASK-PID CPU# ||||| TIMESTAMP FUNCTION $ | | | ||||| | | <idle>-0 [000] ..s1. 36.113438: kfree_skb: skbaddr=(____ptrval____) protocol=2048 location=(____ptrval____) reason: NO_SOCKET The reason of skb drop is printed too. Signed-off-by: Menglong Dong <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]>
2022-01-09net: skb: introduce kfree_skb_reason()Menglong Dong1-1/+22
Introduce the interface kfree_skb_reason(), which is able to pass the reason why the skb is dropped to 'kfree_skb' tracepoint. Add the 'reason' field to 'trace_kfree_skb', therefor user can get more detail information about abnormal skb with 'drop_monitor' or eBPF. All drop reasons are defined in the enum 'skb_drop_reason', and they will be print as string in 'kfree_skb' tracepoint in format of 'reason: XXX'. ( Maybe the reasons should be defined in a uapi header file, so that user space can use them? ) Signed-off-by: Menglong Dong <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]>
2022-01-09net: openvswitch: Fix ct_state nat flags for conns arriving from tcPaul Blakey1-1/+3
Netfilter conntrack maintains NAT flags per connection indicating whether NAT was configured for the connection. Openvswitch maintains NAT flags on the per packet flow key ct_state field, indicating whether NAT was actually executed on the packet. When a packet misses from tc to ovs the conntrack NAT flags are set. However, NAT was not necessarily executed on the packet because the connection's state might still be in NEW state. As such, openvswitch wrongly assumes that NAT was executed and sets an incorrect flow key NAT flags. Fix this, by flagging to openvswitch which NAT was actually done in act_ct via tc_skb_ext and tc_skb_cb to the openvswitch module, so the packet flow key NAT flags will be correctly set. Fixes: b57dc7c13ea9 ("net/sched: Introduce action ct") Signed-off-by: Paul Blakey <[email protected]> Acked-by: Jamal Hadi Salim <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jakub Kicinski <[email protected]>
2022-01-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextJakub Kicinski3-10/+12
Pablo Neira Ayuso says: ==================== Netfilter updates for net-next The following patchset contains Netfilter updates for net-next. This includes one patch to update ovs and act_ct to use nf_ct_put() instead of nf_conntrack_put(). 1) Add netns_tracker to nfnetlink_log and masquerade, from Eric Dumazet. 2) Remove redundant rcu read-size lock in nf_tables packet path. 3) Replace BUG() by WARN_ON_ONCE() in nft_payload. 4) Consolidate rule verdict tracing. 5) Replace WARN_ON() by WARN_ON_ONCE() in nf_tables core. 6) Make counter support built-in in nf_tables. 7) Add new field to conntrack object to identify locally generated traffic, from Florian Westphal. 8) Prevent NAT from shadowing well-known ports, from Florian Westphal. 9) Merge nf_flow_table_{ipv4,ipv6} into nf_flow_table_inet, also from Florian. 10) Remove redundant pointer in nft_pipapo AVX2 support, from Colin Ian King. 11) Replace opencoded max() in conntrack, from Jiapeng Chong. 12) Update conntrack to use refcount_t API, from Florian Westphal. 13) Move ip_ct_attach indirection into the nf_ct_hook structure. 14) Constify several pointer object in the netfilter codebase, from Florian Westphal. 15) Tree-wide replacement of nf_conntrack_put() by nf_ct_put(), also from Florian. 16) Fix egress splat due to incorrect rcu notation, from Florian. 17) Move stateful fields of connlimit, last, quota, numgen and limit out of the expression data area. 18) Build a blob to represent the ruleset in nf_tables, this is a requirement of the new register tracking infrastructure. 19) Add NFT_REG32_NUM to define the maximum number of 32-bit registers. 20) Add register tracking infrastructure to skip redundant store-to-register operations, this includes support for payload, meta and bitwise expresssions. * git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next: (32 commits) netfilter: nft_meta: cancel register tracking after meta update netfilter: nft_payload: cancel register tracking after payload update netfilter: nft_bitwise: track register operations netfilter: nft_meta: track register operations netfilter: nft_payload: track register operations netfilter: nf_tables: add register tracking infrastructure netfilter: nf_tables: add NFT_REG32_NUM netfilter: nf_tables: add rule blob layout netfilter: nft_limit: move stateful fields out of expression data netfilter: nft_limit: rename stateful structure netfilter: nft_numgen: move stateful fields out of expression data netfilter: nft_quota: move stateful fields out of expression data netfilter: nft_last: move stateful fields out of expression data netfilter: nft_connlimit: move stateful fields out of expression data netfilter: egress: avoid a lockdep splat net: prefer nf_ct_put instead of nf_conntrack_put netfilter: conntrack: avoid useless indirection during conntrack destruction netfilter: make function op structures const netfilter: core: move ip_ct_attach indirection to struct nf_ct_hook netfilter: conntrack: convert to refcount_t api ... ==================== Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jakub Kicinski <[email protected]>
2022-01-09netfilter: egress: avoid a lockdep splatFlorian Westphal1-1/+1
include/linux/netfilter_netdev.h:97 suspicious rcu_dereference_check() usage! 2 locks held by sd-resolve/1100: 0: ..(rcu_read_lock_bh){1:3}, at: ip_finish_output2 1: ..(rcu_read_lock_bh){1:3}, at: __dev_queue_xmit __dev_queue_xmit+0 .. The helper has two callers, one uses rcu_read_lock, the other rcu_read_lock_bh(). Annotate the dereference to reflect this. Fixes: 42df6e1d221dd ("netfilter: Introduce egress hook") Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Pablo Neira Ayuso <[email protected]>
2022-01-09netfilter: conntrack: avoid useless indirection during conntrack destructionFlorian Westphal1-0/+2
nf_ct_put() results in a usesless indirection: nf_ct_put -> nf_conntrack_put -> nf_conntrack_destroy -> rcu readlock + indirect call of ct_hooks->destroy(). There are two _put helpers: nf_ct_put and nf_conntrack_put. The latter is what should be used in code that MUST NOT cause a linker dependency on the conntrack module (e.g. calls from core network stack). Everyone else should call nf_ct_put() instead. A followup patch will convert a few nf_conntrack_put() calls to nf_ct_put(), in particular from modules that already have a conntrack dependency such as act_ct or even nf_conntrack itself. Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Pablo Neira Ayuso <[email protected]>
2022-01-09netfilter: make function op structures constFlorian Westphal1-4/+4
No functional changes, these structures should be const. Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Pablo Neira Ayuso <[email protected]>
2022-01-09netfilter: core: move ip_ct_attach indirection to struct nf_ct_hookFlorian Westphal1-1/+1
ip_ct_attach predates struct nf_ct_hook, we can place it there and remove the exported symbol. Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Pablo Neira Ayuso <[email protected]>
2022-01-09netfilter: conntrack: convert to refcount_t apiFlorian Westphal1-4/+4
Convert nf_conn reference counting from atomic_t to refcount_t based api. refcount_t api provides more runtime sanity checks and will warn on certain constructs, e.g. refcount_inc() on a zero reference count, which usually indicates use-after-free. For this reason template allocation is changed to init the refcount to 1, the subsequenct add operations are removed. Likewise, init_conntrack() is changed to set the initial refcount to 1 instead refcount_inc(). This is safe because the new entry is not (yet) visible to other cpus. Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Pablo Neira Ayuso <[email protected]>
2022-01-09fs/locks: fix fcntl_getlk64/fcntl_setlk64 stub prototypesArnd Bergmann1-2/+2
My patch to rework oabi fcntl64() introduced a harmless sparse warning when file locking is disabled: arch/arm/kernel/sys_oabi-compat.c:251:51: sparse: sparse: incorrect type in argument 3 (different address spaces) @@ expected struct flock64 [noderef] __user *user @@ got struct flock64 * @@ arch/arm/kernel/sys_oabi-compat.c:251:51: sparse: expected struct flock64 [noderef] __user *user arch/arm/kernel/sys_oabi-compat.c:251:51: sparse: got struct flock64 * arch/arm/kernel/sys_oabi-compat.c:265:55: sparse: sparse: incorrect type in argument 4 (different address spaces) @@ expected struct flock64 [noderef] __user *user @@ got struct flock64 * @@ arch/arm/kernel/sys_oabi-compat.c:265:55: sparse: expected struct flock64 [noderef] __user *user arch/arm/kernel/sys_oabi-compat.c:265:55: sparse: got struct flock64 * When file locking is enabled, everything works correctly and the right data gets passed, but the stub declarations in linux/fs.h did not get modified when the calling conventions changed in an earlier patch. Reported-by: kernel test robot <[email protected]> Fixes: 7e2d8c29ecdd ("ARM: 9111/1: oabi-compat: rework fcntl64() emulation") Fixes: a75d30c77207 ("fs/locks: pass kernel struct flock to fcntl_getlk/setlk") Cc: Christoph Hellwig <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Acked-by: Christian Brauner <[email protected]> Signed-off-by: Arnd Bergmann <[email protected]> Signed-off-by: Jeff Layton <[email protected]> Signed-off-by: Chuck Lever <[email protected]>
2022-01-09block: fix old-style declarationYang Li1-1/+1
Move the 'inline' keyword to the front of 'void'. Remove a warning found by clang(make W=1 LLVM=1) ./include/linux/blk-mq.h:259:1: warning: ‘inline’ is not at beginning of declaration Reported-by: Abaci Robot <[email protected]> Signed-off-by: Yang Li <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jens Axboe <[email protected]>
2022-01-09tpm: Add Upgrade/Reduced mode support for TPM2 modulesaxelj1-0/+10
If something went wrong during the TPM firmware upgrade, like power failure or the firmware image file get corrupted, the TPM might end up in Upgrade or Failure mode upon the next start. The state is persistent between the TPM power cycle/restart. According to TPM specification: * If the TPM is in Upgrade mode, it will answer with TPM2_RC_UPGRADE to all commands except TPM2_FieldUpgradeData(). It may also accept other commands if it is able to complete them using the previously installed firmware. * If the TPM is in Failure mode, it will allow performing TPM initialization but will not provide any crypto operations. Will happily respond to Field Upgrade calls. Change the behavior of the tpm2_auto_startup(), so it detects the active running mode of the TPM by adding the following checks. If tpm2_do_selftest() call returns TPM2_RC_UPGRADE, the TPM is in Upgrade mode. If the TPM is in Failure mode, it will successfully respond to both tpm2_do_selftest() and tpm2_startup() calls. Although, will fail to answer to tpm2_get_cc_attrs_tbl(). Use this fact to conclude that TPM is in Failure mode. If detected that the TPM is in the Upgrade or Failure mode, the function sets TPM_CHIP_FLAG_FIRMWARE_UPGRADE_MODE flag. The TPM_CHIP_FLAG_FIRMWARE_UPGRADE_MODE flag is used later during driver initialization/deinitialization to disable functionality which makes no sense or will fail in the current TPM state. Following functionality is affected: * Do not register TPM as a hwrng * Do not register sysfs entries which provide information impossible to obtain in limited mode * Do not register resource managed character device Signed-off-by: axelj <[email protected]> Reviewed-by: Jarkko Sakkinen <[email protected]> Signed-off-by: Jarkko Sakkinen <[email protected]>
2022-01-08nfs: block notification on fs with its own ->lockJ. Bruce Fields2-4/+7
NFSv4.1 supports an optional lock notification feature which notifies the client when a lock comes available. (Normally NFSv4 clients just poll for locks if necessary.) To make that work, we need to request a blocking lock from the filesystem. We turned that off for NFS in commit f657f8eef3ff ("nfs: don't atempt blocking locks on nfs reexports") [sic] because it actually blocks the nfsd thread while waiting for the lock. Thanks to Vasily Averin for pointing out that NFS isn't the only filesystem with that problem. Any filesystem that leaves ->lock NULL will use posix_lock_file(), which does the right thing. Simplest is just to assume that any filesystem that defines its own ->lock is not safe to request a blocking lock from. So, this patch mostly reverts commit f657f8eef3ff ("nfs: don't atempt blocking locks on nfs reexports") [sic] and commit b840be2f00c0 ("lockd: don't attempt blocking locks on nfs reexports"), and instead uses a check of ->lock (Vasily's suggestion) to decide whether to support blocking lock notifications on a given filesystem. Also add a little documentation. Perhaps someday we could add back an export flag later to allow filesystems with "good" ->lock methods to support blocking lock notifications. Reported-by: Vasily Averin <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]> [ cel: Description rewritten to address checkpatch nits ] [ cel: Fixed warning when SUNRPC debugging is disabled ] [ cel: Fixed NULL check ] Signed-off-by: Chuck Lever <[email protected]> Reviewed-by: Vasily Averin <[email protected]>
2022-01-08ptrace: Remove unused regs argument from ptrace_report_syscallEric W. Biederman1-4/+3
Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: "Eric W. Biederman" <[email protected]>
2022-01-08exit: Remove profile_handoff_taskEric W. Biederman1-19/+0
All profile_handoff_task does is notify the task_free_notifier chain. The helpers task_handoff_register and task_handoff_unregister are used to add and delete entries from that chain and are never called. So remove the dead code and make it much easier to read and reason about __put_task_struct. Suggested-by: Al Viro <[email protected]> Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: "Eric W. Biederman" <[email protected]>
2022-01-08exit: Remove profile_task_exit & profile_munmapEric W. Biederman1-26/+0
When I say remove I mean remove. All profile_task_exit and profile_munmap do is call a blocking notifier chain. The helpers profile_task_register and profile_task_unregister are not called anywhere in the tree. Which means this is all dead code. So remove the dead code and make it easier to read do_exit. Reviewed-by: Christoph Hellwig <[email protected]> Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: "Eric W. Biederman" <[email protected]>
2022-01-08signal: Remove the helper signal_group_exitEric W. Biederman1-7/+0
This helper is misleading. It tests for an ongoing exec as well as the process having received a fatal signal. Sometimes it is appropriate to treat an on-going exec differently than a process that is shutting down due to a fatal signal. In particular taking the fast path out of exit_signals instead of retargeting signals is not appropriate during exec, and not changing the the exit code in do_group_exit during exec. Removing the helper makes it more obvious what is going on as both cases must be coded for explicitly. While removing the helper fix the two cases where I have observed using signal_group_exit resulted in the wrong result. In exit_signals only test for SIGNAL_GROUP_EXIT so that signals are retargetted during an exec. In do_group_exit use 0 as the exit code during an exec as de_thread does not set group_exit_code. As best as I can determine group_exit_code has been is set to 0 most of the time during de_thread. During a thread group stop group_exit_code is set to the stop signal and when the thread group receives SIGCONT group_exit_code is reset to 0. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: "Eric W. Biederman" <[email protected]>
2022-01-08signal: Rename group_exit_task group_exec_taskEric W. Biederman1-8/+4
The only remaining user of group_exit_task is exec. Rename the field so that it is clear which part of the code uses it. Update the comment above the definition of group_exec_task to document how it is currently used. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: "Eric W. Biederman" <[email protected]>
2022-01-08signal: Remove SIGNAL_GROUP_COREDUMPEric W. Biederman1-2/+1
After the previous cleanups "signal->core_state" is set whenever SIGNAL_GROUP_COREDUMP is set and "signal->core_state" is tested whenver the code wants to know if a coredump is in progress. The remaining tests of SIGNAL_GROUP_COREDUMP also test to see if SIGNAL_GROUP_EXIT is set. Similarly the only place that sets SIGNAL_GROUP_COREDUMP also sets SIGNAL_GROUP_EXIT. Which makes SIGNAL_GROUP_COREDUMP unecessary and redundant. So stop setting SIGNAL_GROUP_COREDUMP, stop testing SIGNAL_GROUP_COREDUMP, and remove it's definition. With the setting of SIGNAL_GROUP_COREDUMP gone, coredump_finish no longer needs to clear SIGNAL_GROUP_COREDUMP out of signal->flags by setting SIGNAL_GROUP_EXIT. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: "Eric W. Biederman" <[email protected]>
2022-01-08power: supply: Provide stubs for charge_behaviour helpersThomas Weißschuh1-0/+15
When CONFIG_SYSFS is not enabled provide stubs for the helper functions to not break their callers. Fixes: 539b9c94ac83 ("power: supply: add helpers for charge_behaviour sysfs") Reported-by: kernel test robot <[email protected]> Signed-off-by: Thomas Weißschuh <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Hans de Goede <[email protected]>
2022-01-08kthread: Generalize pf_io_worker so it can point to struct kthreadEric W. Biederman1-2/+2
The point of using set_child_tid to hold the kthread pointer was that it already did what is necessary. There are now restrictions on when set_child_tid can be initialized and when set_child_tid can be used in schedule_tail. Which indicates that continuing to use set_child_tid to hold the kthread pointer is a bad idea. Instead of continuing to use the set_child_tid field of task_struct generalize the pf_io_worker field of task_struct and use it to hold the kthread pointer. Rename pf_io_worker (which is a void * pointer) to worker_private so it can be used to store kthreads struct kthread pointer. Update the kthread code to store the kthread pointer in the worker_private field. Remove the places where set_child_tid had to be dealt with carefully because kthreads also used it. Link: https://lkml.kernel.org/r/CAHk-=wgtFAA9SbVYg0gR1tqPMC17-NYcs0GQkaYg1bGhh1uJQQ@mail.gmail.com Link: https://lkml.kernel.org/r/[email protected] Suggested-by: Linus Torvalds <[email protected]> Signed-off-by: "Eric W. Biederman" <[email protected]>
2022-01-08Merge branch 'linus' into irq/core, to fix conflictIngo Molnar30-70/+159
Conflicts: drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c Signed-off-by: Ingo Molnar <[email protected]>
2022-01-08mm: Use multi-index entries in the page cacheMatthew Wilcox (Oracle)1-10/+0
We currently store large folios as 2^N consecutive entries. While this consumes rather more memory than necessary, it also turns out to be buggy. A writeback operation which starts within a tail page of a dirty folio will not write back the folio as the xarray's dirty bit is only set on the head index. With multi-index entries, the dirty bit will be found no matter where in the folio the operation starts. This does end up simplifying the page cache slightly, although not as much as I had hoped. Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-08XArray: Add xas_advance()Matthew Wilcox (Oracle)1-0/+18
Add a new helper function to help iterate over multi-index entries. Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-08mm: Remove pagevec_remove_exceptionals()Matthew Wilcox (Oracle)1-5/+1
All of its callers now call folio_batch_remove_exceptionals(). Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-08mm: Convert find_lock_entries() to use a folio_batchMatthew Wilcox (Oracle)1-2/+2
find_lock_entries() already only returned the head page of folios, so convert it to return a folio_batch instead of a pagevec. That cascades through converting truncate_inode_pages_range() to delete_from_page_cache_batch() and page_cache_delete_batch(). Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-08filemap: Return only folios from find_get_entries()Matthew Wilcox (Oracle)1-2/+0
The callers have all been converted to work on folios, so convert find_get_entries() to return a batch of folios instead of pages. We also now return multiple large folios in a single call. Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Jan Kara <[email protected]> Reviewed-by: William Kucharski <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]>
2022-01-08truncate,shmem: Add truncate_inode_folio()Matthew Wilcox (Oracle)1-1/+0
Convert all callers of truncate_inode_page() to call truncate_inode_folio() instead, and move the declaration to mm/internal.h. Move the assertion that the caller is not passing in a tail page to generic_error_remove_page(). We can't entirely remove the struct page from the callers yet because the page pointer in the pvec might be a shadow/dax/swap entry instead of actually a page. Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-08mm: Add unmap_mapping_folio()Matthew Wilcox (Oracle)1-24/+0
Convert both callers of unmap_mapping_page() to call unmap_mapping_folio() instead. Also move zap_details from linux/mm.h to mm/memory.c Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Reviewed-by: William Kucharski <[email protected]>
2022-01-07Merge tag 'drm-fixes-2022-01-07' of git://anongit.freedesktop.org/drm/drmLinus Torvalds1-0/+1
Pull drm fixes from Dave Airlie: "There is only the amdgpu runtime pm regression fix in here: amdgpu: - suspend/resume fix - fix runtime PM regression" * tag 'drm-fixes-2022-01-07' of git://anongit.freedesktop.org/drm/drm: drm/amdgpu: disable runpm if we are the primary adapter fbdev: fbmem: add a helper to determine if an aperture is used by a fw fb drm/amd/pm: keep the BACO feature enabled for suspend
2022-01-07spi: don't include ptp_clock_kernel.h in spi.hJakub Kicinski1-1/+1
Commit b42faeee718c ("spi: Add a PTP system timestamp to the transfer structure") added an include of ptp_clock_kernel.h to spi.h for struct ptp_system_timestamp but a forward declaration is enough. Let's use that to limit the number of objects we have to rebuild every time we touch networking headers. Signed-off-by: Jakub Kicinski <[email protected]> Tested-by: Vladimir Oltean <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2022-01-07KVM: x86/xen: Add KVM_IRQ_ROUTING_XEN_EVTCHN and event channel deliveryDavid Woodhouse1-0/+7
This adds basic support for delivering 2 level event channels to a guest. Initially, it only supports delivery via the IRQ routing table, triggered by an eventfd. In order to do so, it has a kvm_xen_set_evtchn_fast() function which will use the pre-mapped shared_info page if it already exists and is still valid, while the slow path through the irqfd_inject workqueue will remap the shared_info page if necessary. It sets the bits in the shared_info page but not the vcpu_info; that is deferred to __kvm_xen_has_interrupt() which raises the vector to the appropriate vCPU. Add a 'verbose' mode to xen_shinfo_test while adding test cases for this. Signed-off-by: David Woodhouse <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2022-01-07KVM: Reinstate gfn_to_pfn_cache with invalidation supportDavid Woodhouse2-0/+121
This can be used in two modes. There is an atomic mode where the cached mapping is accessed while holding the rwlock, and a mode where the physical address is used by a vCPU in guest mode. For the latter case, an invalidation will wake the vCPU with the new KVM_REQ_GPC_INVALIDATE, and the architecture will need to refresh any caches it still needs to access before entering guest mode again. Only one vCPU can be targeted by the wake requests; it's simple enough to make it wake all vCPUs or even a mask but I don't see a use case for that additional complexity right now. Invalidation happens from the invalidate_range_start MMU notifier, which needs to be able to sleep in order to wake the vCPU and wait for it. This means that revalidation potentially needs to "wait" for the MMU operation to complete and the invalidate_range_end notifier to be invoked. Like the vCPU when it takes a page fault in that period, we just spin — fixing that in a future patch by implementing an actual *wait* may be another part of shaving this particularly hirsute yak. As noted in the comments in the function itself, the only case where the invalidate_range_start notifier is expected to be called *without* being able to sleep is when the OOM reaper is killing the process. In that case, we expect the vCPU threads already to have exited, and thus there will be nothing to wake, and no reason to wait. So we clear the KVM_REQUEST_WAIT bit and send the request anyway, then complain loudly if there actually *was* anything to wake up. Signed-off-by: David Woodhouse <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2022-01-07KVM: Warn if mark_page_dirty() is called without an active vCPUDavid Woodhouse1-6/+0
The various kvm_write_guest() and mark_page_dirty() functions must only ever be called in the context of an active vCPU, because if dirty ring tracking is enabled it may simply oops when kvm_get_running_vcpu() returns NULL for the vcpu and then kvm_dirty_ring_get() dereferences it. This oops was reported by "butt3rflyh4ck" <[email protected]> in https://lore.kernel.org/kvm/CAFcO6XOmoS7EacN_n6v4Txk7xL7iqRa2gABg3F7E3Naf5uG94g@mail.gmail.com/ That actual bug will be fixed under separate cover but this warning should help to prevent new ones from being added. Signed-off-by: David Woodhouse <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2022-01-07Merge tag 'kvmarm-5.17' of ↵Paolo Bonzini1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 updates for Linux 5.16 - Simplification of the 'vcpu first run' by integrating it into KVM's 'pid change' flow - Refactoring of the FP and SVE state tracking, also leading to a simpler state and less shared data between EL1 and EL2 in the nVHE case - Tidy up the header file usage for the nvhe hyp object - New HYP unsharing mechanism, finally allowing pages to be unmapped from the Stage-1 EL2 page-tables - Various pKVM cleanups around refcounting and sharing - A couple of vgic fixes for bugs that would trigger once the vcpu xarray rework is merged, but not sooner - Add minimal support for ARMv8.7's PMU extension - Rework kvm_pgtable initialisation ahead of the NV work - New selftest for IRQ injection - Teach selftests about the lack of default IPA space and page sizes - Expand sysreg selftest to deal with Pointer Authentication - The usual bunch of cleanups and doc update
2022-01-07fscache, cachefiles: Display stat of culling eventsDavid Howells1-0/+3
Add a stat counter of culling events whereby the cache backend culls a file to make space (when asked by cachefilesd in this case) and display in /proc/fs/fscache/stats. Signed-off-by: David Howells <[email protected]> Reviewed-by: Jeff Layton <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/163819654165.215744.3797804661644212436.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/163906961387.143852.9291157239960289090.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/163967168266.1823006.14436200166581605746.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/164021567619.640689.4339228906248763197.stgit@warthog.procyon.org.uk/ # v4
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