user/sven/linux.git/include/trace/events, branch v5.6.11

blk-iocost: Fix error on iocost_ioc_vrate_adj

2020-05-02T06:50:54Z

commit d6c8e949a35d6906d6c03a50e9a9cdf4e494528a upstream. Systemtap 4.2 is unable to correctly interpret the "u32 (*missed_ppm)[2]" argument of the iocost_ioc_vrate_adj trace entry defined in include/trace/events/iocost.h leading to the following error: /tmp/stapAcz0G0/stap_c89c58b83cea1724e26395efa9ed4939_6321_aux_6.c:78:8: error: expected ‘;’, ‘,’ or ‘)’ before ‘*’ token , u32[]* __tracepoint_arg_missed_ppm That argument type is indeed rather complex and hard to read. Looking at block/blk-iocost.c. It is just a 2-entry u32 array. By simplifying the argument to a simple "u32 *missed_ppm" and adjusting the trace entry accordingly, the compilation error was gone. Fixes: 7caa47151ab2 ("blkcg: implement blk-iocost") Acked-by: Steven Rostedt (VMware) Acked-by: Tejun Heo Signed-off-by: Waiman Long Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman

svcrdma: Fix trace point use-after-free race

2020-05-02T06:50:49Z

commit e28b4fc652c1830796a4d3e09565f30c20f9a2cf upstream. I hit this while testing nfsd-5.7 with kernel memory debugging enabled on my server: Mar 30 13:21:45 klimt kernel: BUG: unable to handle page fault for address: ffff8887e6c279a8 Mar 30 13:21:45 klimt kernel: #PF: supervisor read access in kernel mode Mar 30 13:21:45 klimt kernel: #PF: error_code(0x0000) - not-present page Mar 30 13:21:45 klimt kernel: PGD 3601067 P4D 3601067 PUD 87c519067 PMD 87c3e2067 PTE 800ffff8193d8060 Mar 30 13:21:45 klimt kernel: Oops: 0000 [#1] SMP DEBUG_PAGEALLOC PTI Mar 30 13:21:45 klimt kernel: CPU: 2 PID: 1933 Comm: nfsd Not tainted 5.6.0-rc6-00040-g881e87a3c6f9 #1591 Mar 30 13:21:45 klimt kernel: Hardware name: Supermicro Super Server/X10SRL-F, BIOS 1.0c 09/09/2015 Mar 30 13:21:45 klimt kernel: RIP: 0010:svc_rdma_post_chunk_ctxt+0xab/0x284 [rpcrdma] Mar 30 13:21:45 klimt kernel: Code: c1 83 34 02 00 00 29 d0 85 c0 7e 72 48 8b bb a0 02 00 00 48 8d 54 24 08 4c 89 e6 48 8b 07 48 8b 40 20 e8 5a 5c 2b e1 41 89 c6 <8b> 45 20 89 44 24 04 8b 05 02 e9 01 00 85 c0 7e 33 e9 5e 01 00 00 Mar 30 13:21:45 klimt kernel: RSP: 0018:ffffc90000dfbdd8 EFLAGS: 00010286 Mar 30 13:21:45 klimt kernel: RAX: 0000000000000000 RBX: ffff8887db8db400 RCX: 0000000000000030 Mar 30 13:21:45 klimt kernel: RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000246 Mar 30 13:21:45 klimt kernel: RBP: ffff8887e6c27988 R08: 0000000000000000 R09: 0000000000000004 Mar 30 13:21:45 klimt kernel: R10: ffffc90000dfbdd8 R11: 00c068ef00000000 R12: ffff8887eb4e4a80 Mar 30 13:21:45 klimt kernel: R13: ffff8887db8db634 R14: 0000000000000000 R15: ffff8887fc931000 Mar 30 13:21:45 klimt kernel: FS: 0000000000000000(0000) GS:ffff88885bd00000(0000) knlGS:0000000000000000 Mar 30 13:21:45 klimt kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Mar 30 13:21:45 klimt kernel: CR2: ffff8887e6c279a8 CR3: 000000081b72e002 CR4: 00000000001606e0 Mar 30 13:21:45 klimt kernel: Call Trace: Mar 30 13:21:45 klimt kernel: ? svc_rdma_vec_to_sg+0x7f/0x7f [rpcrdma] Mar 30 13:21:45 klimt kernel: svc_rdma_send_write_chunk+0x59/0xce [rpcrdma] Mar 30 13:21:45 klimt kernel: svc_rdma_sendto+0xf9/0x3ae [rpcrdma] Mar 30 13:21:45 klimt kernel: ? nfsd_destroy+0x51/0x51 [nfsd] Mar 30 13:21:45 klimt kernel: svc_send+0x105/0x1e3 [sunrpc] Mar 30 13:21:45 klimt kernel: nfsd+0xf2/0x149 [nfsd] Mar 30 13:21:45 klimt kernel: kthread+0xf6/0xfb Mar 30 13:21:45 klimt kernel: ? kthread_queue_delayed_work+0x74/0x74 Mar 30 13:21:45 klimt kernel: ret_from_fork+0x3a/0x50 Mar 30 13:21:45 klimt kernel: Modules linked in: ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm ocfs2_nodemanager ocfs2_stackglue ib_umad ib_ipoib mlx4_ib sb_edac x86_pkg_temp_thermal iTCO_wdt iTCO_vendor_support coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel glue_helper crypto_simd cryptd pcspkr rpcrdma i2c_i801 rdma_ucm lpc_ich mfd_core ib_iser rdma_cm iw_cm ib_cm mei_me raid0 libiscsi mei sg scsi_transport_iscsi ioatdma wmi ipmi_si ipmi_devintf ipmi_msghandler acpi_power_meter nfsd nfs_acl lockd auth_rpcgss grace sunrpc ip_tables xfs libcrc32c mlx4_en sd_mod sr_mod cdrom mlx4_core crc32c_intel igb nvme i2c_algo_bit ahci i2c_core libahci nvme_core dca libata t10_pi qedr dm_mirror dm_region_hash dm_log dm_mod dax qede qed crc8 ib_uverbs ib_core Mar 30 13:21:45 klimt kernel: CR2: ffff8887e6c279a8 Mar 30 13:21:45 klimt kernel: ---[ end trace 87971d2ad3429424 ]--- It's absolutely not safe to use resources pointed to by the @send_wr argument of ib_post_send() _after_ that function returns. Those resources are typically freed by the Send completion handler, which can run before ib_post_send() returns. Thus the trace points currently around ib_post_send() in the server's RPC/RDMA transport are a hazard, even when they are disabled. Rearrange them so that they touch the Work Request only _before_ ib_post_send() is invoked. Fixes: bd2abef33394 ("svcrdma: Trace key RDMA API events") Fixes: 4201c7464753 ("svcrdma: Introduce svc_rdma_send_ctxt") Signed-off-by: Chuck Lever Signed-off-by: Greg Kroah-Hartman

rcu: Make rcu_barrier() account for offline no-CBs CPUs

2020-04-17T14:13:30Z

commit 127e29815b4b2206c0a97ac1d83f92ffc0e25c34 upstream. Currently, rcu_barrier() ignores offline CPUs, However, it is possible for an offline no-CBs CPU to have callbacks queued, and rcu_barrier() must wait for those callbacks. This commit therefore makes rcu_barrier() directly invoke the rcu_barrier_func() with interrupts disabled for such CPUs. This requires passing the CPU number into this function so that it can entrain the rcu_barrier() callback onto the correct CPU's callback list, given that the code must instead execute on the current CPU. While in the area, this commit fixes a bug where the first CPU's callback might have been invoked before rcu_segcblist_entrain() returned, which would also result in an early wakeup. Fixes: 5d6742b37727 ("rcu/nocb: Use rcu_segcblist for no-CBs CPUs") Signed-off-by: Paul E. McKenney [ paulmck: Apply optimization feedback from Boqun Feng. ] Cc: # 5.5.x Signed-off-by: Greg Kroah-Hartman

afs: Fix some tracing details

2020-03-13T23:04:34Z

Fix a couple of tracelines to indicate the usage count after the atomic op, not the usage count before it to be consistent with other afs and rxrpc trace lines. Change the wording of the afs_call_trace_work trace ID label from "WORK" to "QUEUE" to reflect the fact that it's queueing work, not doing work. Fixes: 341f741f04be ("afs: Refcount the afs_call struct") Signed-off-by: David Howells

Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2020-02-08T22:04:19Z

Pull ARM SoC-related driver updates from Olof Johansson: "Various driver updates for platforms: - Nvidia: Fuse support for Tegra194, continued memory controller pieces for Tegra30 - NXP/FSL: Refactorings of QuickEngine drivers to support ARM/ARM64/PPC - NXP/FSL: i.MX8MP SoC driver pieces - TI Keystone: ring accelerator driver - Qualcomm: SCM driver cleanup/refactoring + support for new SoCs. - Xilinx ZynqMP: feature checking interface for firmware. Mailbox communication for power management - Overall support patch set for cpuidle on more complex hierarchies (PSCI-based) and misc cleanups, refactorings of Marvell, TI, other platforms" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (166 commits) drivers: soc: xilinx: Use mailbox IPI callback dt-bindings: power: reset: xilinx: Add bindings for ipi mailbox drivers: soc: ti: knav_qmss_queue: Pass lockdep expression to RCU lists MAINTAINERS: Add brcmstb PCIe controller entry soc/tegra: fuse: Unmap registers once they are not needed anymore soc/tegra: fuse: Correct straps' address for older Tegra124 device trees soc/tegra: fuse: Warn if straps are not ready soc/tegra: fuse: Cache values of straps and Chip ID registers memory: tegra30-emc: Correct error message for timed out auto calibration memory: tegra30-emc: Firm up hardware programming sequence memory: tegra30-emc: Firm up suspend/resume sequence soc/tegra: regulators: Do nothing if voltage is unchanged memory: tegra: Correct reset value of xusb_hostr soc/tegra: fuse: Add APB DMA dependency for Tegra20 bus: tegra-aconnect: Remove PM_CLK dependency dt-bindings: mediatek: add MT6765 power dt-bindings soc: mediatek: cmdq: delete not used define memory: tegra: Add support for the Tegra194 memory controller memory: tegra: Only include support for enabled SoCs memory: tegra: Support DVFS on Tegra186 and later ...

Merge tag 'nfs-for-5.6-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

2020-02-08T01:39:56Z

Puyll NFS client updates from Anna Schumaker: "Stable bugfixes: - Fix memory leaks and corruption in readdir # v2.6.37+ - Directory page cache needs to be locked when read # v2.6.37+ New features: - Convert NFS to use the new mount API - Add "softreval" mount option to let clients use cache if server goes down - Add a config option to compile without UDP support - Limit the number of inactive delegations the client can cache at once - Improved readdir concurrency using iterate_shared() Other bugfixes and cleanups: - More 64-bit time conversions - Add additional diagnostic tracepoints - Check for holes in swapfiles, and add dependency on CONFIG_SWAP - Various xprtrdma cleanups to prepare for 5.7's changes - Several fixes for NFS writeback and commit handling - Fix acls over krb5i/krb5p mounts - Recover from premature loss of openstateids - Fix NFS v3 chacl and chmod bug - Compare creds using cred_fscmp() - Use kmemdup_nul() in more places - Optimize readdir cache page invalidation - Lease renewal and recovery fixes" * tag 'nfs-for-5.6-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (93 commits) NFSv4.0: nfs4_do_fsinfo() should not do implicit lease renewals NFSv4: try lease recovery on NFS4ERR_EXPIRED NFS: Fix memory leaks nfs: optimise readdir cache page invalidation NFS: Switch readdir to using iterate_shared() NFS: Use kmemdup_nul() in nfs_readdir_make_qstr() NFS: Directory page cache pages need to be locked when read NFS: Fix memory leaks and corruption in readdir SUNRPC: Use kmemdup_nul() in rpc_parse_scope_id() NFS: Replace various occurrences of kstrndup() with kmemdup_nul() NFSv4: Limit the total number of cached delegations NFSv4: Add accounting for the number of active delegations held NFSv4: Try to return the delegation immediately when marked for return on close NFS: Clear NFS_DELEGATION_RETURN_IF_CLOSED when the delegation is returned NFSv4: nfs_inode_evict_delegation() should set NFS_DELEGATION_RETURNING NFS: nfs_find_open_context() should use cred_fscmp() NFS: nfs_access_get_cached_rcu() should use cred_fscmp() NFSv4: pnfs_roc() must use cred_fscmp() to compare creds NFS: remove unused macros nfs: Return EINVAL rather than ERANGE for mount parse errors ...

Merge tag 'pwm/for-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

2020-02-05T18:11:51Z

Pull pwm updates from Thierry Reding: "Mostly cleanups and minor improvements with some new chip support for some drivers" * tag 'pwm/for-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (37 commits) pwm: Remove set but not set variable 'pwm' pwm: sun4i: Initialize variables before use pwm: stm32: Remove automatic output enable pwm: sun4i: Narrow scope of local variable pwm: bcm2835: Allow building for ARCH_BRCMSTB pwm: imx27: Eliminate error message for defer probe pwm: sun4i: Fix inconsistent IS_ERR and PTR_ERR pwm: sun4i: Move pwm_calculate() out of spin_lock() pwm: omap-dmtimer: Allow compiling with COMPILE_TEST pwm: omap-dmtimer: put_device() after of_find_device_by_node() pwm: omap-dmtimer: Simplify error handling pwm: omap-dmtimer: Remove PWM chip in .remove before making it unfunctional pwm: Implement tracing for .get_state() and .apply_state() pwm: rcar: Document inability to set duty_cycle = 0 pwm: rcar: Drop useless call to pwm_get_state() pwm: Fix minor Kconfig whitespace issues pwm: atmel: Implement .get_state() pwm: atmel: Use register accessors for channels pwm: atmel: Document known weaknesses of both hardware and software pwm: atmel: Replace loop in prescale calculation by ad-hoc calculation ...

Merge tag 'iommu-updates-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

2020-02-05T17:49:54Z

Pull iommu updates from Joerg Roedel: - Allow compiling the ARM-SMMU drivers as modules. - Fixes and cleanups for the ARM-SMMU drivers and io-pgtable code collected by Will Deacon. The merge-commit (6855d1ba7537) has all the details. - Cleanup of the iommu_put_resv_regions() call-backs in various drivers. - AMD IOMMU driver cleanups. - Update for the x2APIC support in the AMD IOMMU driver. - Preparation patches for Intel VT-d nested mode support. - RMRR and identity domain handling fixes for the Intel VT-d driver. - More small fixes and cleanups. * tag 'iommu-updates-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (87 commits) iommu/amd: Remove the unnecessary assignment iommu/vt-d: Remove unnecessary WARN_ON_ONCE() iommu/vt-d: Unnecessary to handle default identity domain iommu/vt-d: Allow devices with RMRRs to use identity domain iommu/vt-d: Add RMRR base and end addresses sanity check iommu/vt-d: Mark firmware tainted if RMRR fails sanity check iommu/amd: Remove unused struct member iommu/amd: Replace two consecutive readl calls with one readq iommu/vt-d: Don't reject Host Bridge due to scope mismatch PCI/ATS: Add PASID stubs iommu/arm-smmu-v3: Return -EBUSY when trying to re-add a device iommu/arm-smmu-v3: Improve add_device() error handling iommu/arm-smmu-v3: Use WRITE_ONCE() when changing validity of an STE iommu/arm-smmu-v3: Add second level of context descriptor table iommu/arm-smmu-v3: Prepare for handling arm_smmu_write_ctx_desc() failure iommu/arm-smmu-v3: Propagate ssid_bits iommu/arm-smmu-v3: Add support for Substream IDs iommu/arm-smmu-v3: Add context descriptor tables allocators iommu/arm-smmu-v3: Prepare arm_smmu_s1_cfg for SSID support ACPI/IORT: Parse SSID property of named component node ...

Merge tag 'media/v5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

2020-01-31T22:43:23Z

Pull media updates from Mauro Carvalho Chehab: - New staging driver for Rockship ISPv1 unit - New staging driver for Rockchip MIPI Synopsys DPHY RX0 - y2038 fixes at V4L2 API (backward-compatible) - A dvb core fix when receiving invalid EIT sections - Some clang-specific warnings got fixed - Added support for touch V4L2 interface at vivid - Several drivers were converted to use the new i2c_new_scanned_device() kAPI - Added sm1 support at meson's vdec driver - Several other driver cleanups, fixes and improvements * tag 'media/v5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (207 commits) media: staging/intel-ipu3: remove TODO item about acronyms media: v4l2-fwnode: Print the node name while parsing endpoints media: Revert "media: staging/intel-ipu3: make imgu use fixed running mode" media: mt9v111: constify copied structure media: platform: VIDEO_MEDIATEK_JPEG can also depend on MTK_IOMMU media: uvcvideo: Add a quirk to force GEO GC6500 Camera bits-per-pixel value media: uvcvideo: Avoid cyclic entity chains due to malformed USB descriptors media: hantro: fix post-processing NULL pointer dereference media: rcar-vin: Use correct pixel format when aligning format media: MAINTAINERS: add entry for Rockchip ISP1 driver media: staging: rkisp1: add TODO file for staging media: staging: rkisp1: add document for rkisp1 meta buffer format media: staging: rkisp1: add output device for parameters media: staging: rkisp1: add capture device for statistics media: staging: rkisp1: add user space ABI definitions media: staging: rkisp1: add streaming paths media: staging: rkisp1: add Rockchip ISP1 base driver media: staging: phy-rockchip-dphy-rx0: add Rockchip MIPI Synopsys DPHY RX0 driver media: staging: dt-bindings: add Rockchip MIPI RX D-PHY RX0 yaml bindings media: staging: dt-bindings: add Rockchip ISP1 yaml bindings ...

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

2020-01-31T22:40:36Z

Pull rdma updates from Jason Gunthorpe: "A very quiet cycle with few notable changes. Mostly the usual list of one or two patches to drivers changing something that isn't quite rc worthy. The subsystem seems to be seeing a larger number of rework and cleanup style patches right now, I feel that several vendors are prepping their drivers for new silicon. Summary: - Driver updates and cleanup for qedr, bnxt_re, hns, siw, mlx5, mlx4, rxe, i40iw - Larger series doing cleanup and rework for hns and hfi1. - Some general reworking of the CM code to make it a little more understandable - Unify the different code paths connected to the uverbs FD scheme - New UAPI ioctls conversions for get context and get async fd - Trace points for CQ and CM portions of the RDMA stack - mlx5 driver support for virtio-net formatted rings as RDMA raw ethernet QPs - verbs support for setting the PCI-E relaxed ordering bit on DMA traffic connected to a MR - A couple of bug fixes that came too late to make rc7" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (108 commits) RDMA/core: Make the entire API tree static RDMA/efa: Mask access flags with the correct optional range RDMA/cma: Fix unbalanced cm_id reference count during address resolve RDMA/umem: Fix ib_umem_find_best_pgsz() IB/mlx4: Fix leak in id_map_find_del IB/opa_vnic: Spelling correction of 'erorr' to 'error' IB/hfi1: Fix logical condition in msix_request_irq RDMA/cm: Remove CM message structs RDMA/cm: Use IBA functions for complex structure members RDMA/cm: Use IBA functions for simple structure members RDMA/cm: Use IBA functions for swapping get/set acessors RDMA/cm: Use IBA functions for simple get/set acessors RDMA/cm: Add SET/GET implementations to hide IBA wire format RDMA/cm: Add accessors for CM_REQ transport_type IB/mlx5: Return the administrative GUID if exists RDMA/core: Ensure that rdma_user_mmap_entry_remove() is a fence IB/mlx4: Fix memory leak in add_gid error flow IB/mlx5: Expose RoCE accelerator counters RDMA/mlx5: Set relaxed ordering when requested RDMA/core: Add the core support field to METHOD_GET_CONTEXT ...