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2019-08-10kbuild: generate modules.order only in directories visited by obj-y/mMasahiro Yamada1-1/+2
The modules.order files in directories visited by the chain of obj-y or obj-m are merged to the upper-level ones, and become parts of the top-level modules.order. On the other hand, there is no need to generate modules.order in directories visited by subdir-y or subdir-m since they would become orphan anyway. Signed-off-by: Masahiro Yamada <[email protected]>
2019-08-10kbuild: fix false-positive need-builtin calculationMasahiro Yamada1-1/+2
The current implementation of need-builtin is false-positive, for example, in the following Makefile: obj-m := foo/ obj-y := foo/bar/ ..., where foo/built-in.a is not required. Signed-off-by: Masahiro Yamada <[email protected]>
2019-08-10kbuild: revive single target %.koMasahiro Yamada2-4/+13
I removed the single target %.ko in commit ff9b45c55b26 ("kbuild: modpost: read modules.order instead of $(MODVERDIR)/*.mod") because the modpost stage does not work reliably. For instance, the module dependency, modversion, etc. do not work if we lack symbol information from the other modules. Yet, some people still want to build only one module in their interest, and it may be still useful if it is used within those limitations. Fixes: ff9b45c55b26 ("kbuild: modpost: read modules.order instead of $(MODVERDIR)/*.mod") Reported-by: Don Brace <[email protected]> Reported-by: Arend Van Spriel <[email protected]> Signed-off-by: Masahiro Yamada <[email protected]>
2019-08-09Merge tag 'drm-fixes-2019-08-09' of git://anongit.freedesktop.org/drm/drmLinus Torvalds17-102/+155
Pull drm fixes from Dave Airlie: "Usual fixes roundup. Nothing too crazy or serious, one non-released ioctl is removed in the amdkfd driver. core: - mode parser strncpy fix i915: - GLK DSI escape clock setting - HDCP memleak fix tegra: - one gpiod/of regression fix amdgpu: - fix VCN to handle the latest navi10 firmware - fix for fan control on navi10 - properly handle SMU metrics table on navi10 - fix a resume regression on Stoney - kfd revert a GWS ioctl vmwgfx: - memory leak fix rockchip: - suspend fix" * tag 'drm-fixes-2019-08-09' of git://anongit.freedesktop.org/drm/drm: drm/vmwgfx: fix memory leak when too many retries have occurred Revert "drm/amdkfd: New IOCTL to allocate queue GWS" Revert "drm/amdgpu: fix transform feedback GDS hang on gfx10 (v2)" drm/amdgpu: pin the csb buffer on hw init for gfx v8 drm/rockchip: Suspend DP late drm/i915: Fix wrong escape clock divisor init for GLK drm/i915: fix possible memory leak in intel_hdcp_auth_downstream() drm/modes: Fix unterminated strncpy drm/amd/powerplay: correct navi10 vcn powergate drm/amd/powerplay: honor hw limit on fetching metrics data for navi10 drm/amd/powerplay: Allow changing of fan_control in smu_v11_0 drm/amd/amdgpu/vcn_v2_0: Move VCN 2.0 specific dec ring test to vcn_v2_0 drm/amd/amdgpu/vcn_v2_0: Mark RB commands as KMD commands drm/tegra: Fix gpiod_get_from_of_node() regression
2019-08-09Merge tag 'arm64-fixes' of ↵Linus Torvalds1-2/+5
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fix from Catalin Marinas: "Fix bad_pte warning caused by pte_mkdevmap() not setting PTE_SPECIAL" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: mm: add missing PTE_SPECIAL in pte_mkdevmap on arm64
2019-08-09Merge tag 's390-5.3-5' of ↵Linus Torvalds10-47/+17
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Vasily Gorbik: - Map vdso also for statically linked binaries like all other architectures. - Fix no .bss usage compile-time check to account common objects with the help of binutils size tool. Top level Makefile change acked-by Masahiro. - A fix to make perf happy with _etext symbol type. - Fix dump_pagetables which is broken since p*d_offset implementation change to comply with mm/gup.c expectations. - Revert memory sharing for diag calls in protected virtualization, since this is not required after all. - Couple of other minor code cleanups. * tag 's390-5.3-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/vdso: map vdso also for statically linked binaries s390/build: use size command to perform empty .bss check kbuild: add OBJSIZE variable for the size tool s390: put _stext and _etext into .text section s390/head64: cleanup unused labels s390/unwind: remove stack recursion warning s390/setup: adjust start_code of init_mm to _text s390/mm: fix dump_pagetables top level page table walking s390/protvirt: avoid memory sharing for diag 308 set/store
2019-08-09Merge tag 'for-linus-20190809' of git://git.kernel.dk/linux-blockLinus Torvalds8-51/+113
Pull block fixes from Jens Axboe: - Revert of a bcache patch that caused an oops for some (Coly) - ata rb532 unused warning fix (Gustavo) - AoE kernel crash fix (He) - Error handling fixup for blkdev_get() (Jan) - libata read/write translation and SFF PIO fix (me) - Use after free and error handling fix for O_DIRECT fragments. There's still a nowait + sync oddity in there, we'll nail that start next week. If all else fails, I'll queue a revert of the NOWAIT change. (me) - Loop GFP_KERNEL -> GFP_NOIO deadlock fix (Mikulas) - Two BFQ regression fixes that caused crashes (Paolo) * tag 'for-linus-20190809' of git://git.kernel.dk/linux-block: bcache: Revert "bcache: use sysfs_match_string() instead of __sysfs_match_string()" loop: set PF_MEMALLOC_NOIO for the worker thread bdev: Fixup error handling in blkdev_get() block, bfq: handle NULL return value by bfq_init_rq() block, bfq: move update of waker and woken list to queue freeing block, bfq: reset last_completed_rq_bfqq if the pointed queue is freed block: aoe: Fix kernel crash due to atomic sleep when exiting libata: add SG safety checks in SFF pio transfers libata: have ata_scsi_rw_xlat() fail invalid passthrough requests block: fix O_DIRECT error handling for bio fragments ata: rb532_cf: Fix unused variable warning in rb532_pata_driver_probe
2019-08-09Merge tag 'mmc-v5.3-rc3' of ↵Linus Torvalds11-13/+15
git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc Pull MMC fixes from Ulf Hansson: - cavium: Fix DMA support - sdhci-sprd: Fix soft reset when runtime resuming" * tag 'mmc-v5.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: mmc: cavium: Add the missing dma unmap when the dma has finished. mmc: cavium: Set the correct dma max segment size for mmc_host mmc: sdhci-sprd: Fix the incorrect soft reset operation when runtime resuming
2019-08-09Merge tag 'fbdev-v5.3-rc4' of git://github.com/bzolnier/linuxLinus Torvalds1-1/+1
Pull fbdev fix from Bartlomiej Zolnierkiewicz: "fbdev patches will now go to upstream through drm-misc tree for improved maintainership and better integration testing so update MAINTAINERS file accordingly" * tag 'fbdev-v5.3-rc4' of git://github.com/bzolnier/linux: MAINTAINERS: handle fbdev changes through drm-misc tree
2019-08-09Merge tag 'pwm/for-5.3-rc4' of ↵Linus Torvalds1-2/+5
git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm fix from Thierry Reding: "A single fix for a backlight brightness regression introduced in this merge window" * tag 'pwm/for-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: pwm: Fallback to the static lookup-list when acpi_pwm_get fails
2019-08-09Merge tag 'sound-5.3-rc4' of ↵Linus Torvalds47-158/+388
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "Lots of small fixes at this time since we've received the ASoC fix batch now. - Some coverage in ASoC core mostly for minor issues like NULL checks for DPCM and proper error handling in DAI instantiation - A collection of small device-specific changes in various ASoC codec and platform drivers - OF-tree refcount fixes in a few ASoC drivers - Fixes of memory leaks in the error paths of various ASoC / ALSA drivers - A workaround for a long-standing issue on AMD HD-audio device - Updates of MAINTAINERS, mail addresses, file permission fixups" * tag 'sound-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (38 commits) ALSA: firewire: fix a memory leak bug sound: fix a memory leak bug ALSA: hda - Workaround for crackled sound on AMD controller (1022:1457) ALSA: hiface: fix multiple memory leak bugs ALSA: hda - Don't override global PCM hw info flag ALSA: usb-audio: fix a memory leak bug ASoC: max98373: Remove executable bits ASoC: amd: acp3x: use dma address for acp3x dma driver ASoC: amd: acp3x: use dma_ops of parent device for acp3x dma driver ASoC: max98373: add 88200 and 96000 sampling rate support ASoC: sun4i-i2s: Incorrect SR and WSS computation MAINTAINERS: Update Intel ASoC drivers maintainers ASoC: ti: davinci-mcasp: Correct slot_width posed constraint ASoC: rockchip: Fix mono capture ASoC: Intel: Fix some acpi vs apci typo in somme comments ASoC: ti: davinci-mcasp: Fix clk PDIR handling for i2s master mode ASoC: Fail card instantiation if DAI format setup fails ASoC: SOF: Intel: hda: remove misleading error trace from IRQ thread ASoC: qcom: apq8016_sbc: Fix oops with multiple DAI links ASoC: dapm: fix a memory leak bug ...
2019-08-09Merge tag 'media/v5.3-3' of ↵Linus Torvalds1-4/+4
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media fix from Mauro Carvalho Chehab: "A fix at the vivid CEC support" * tag 'media/v5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: media: vivid: fix missing cec adapter name
2019-08-09Merge tag 'pm-5.3-rc4' of ↵Linus Torvalds3-86/+10
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fix from Rafael Wysocki: "Revert a recent PCI power management change that caused problems to occur on multiple systems (Mika Westerberg)" * tag 'pm-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: Revert "PCI: Add missing link delays required by the PCIe spec"
2019-08-09Merge branch 'linus' of ↵Linus Torvalds3-9/+40
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto fixes from Herbert Xu: "Fix a number of bugs in the ccp driver" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: ccp - Ignore tag length when decrypting GCM ciphertext crypto: ccp - Add support for valid authsize values less than 16 crypto: ccp - Fix oops by properly managing allocated structures
2019-08-09gfs2: gfs2_walk_metadata fixAndreas Gruenbacher1-63/+101
It turns out that the current version of gfs2_metadata_walker suffers from multiple problems that can cause gfs2_hole_size to report an incorrect size. This will confuse fiemap as well as lseek with the SEEK_DATA flag. Fix that by changing gfs2_hole_walker to compute the metapath to the first data block after the hole (if any), and compute the hole size based on that. Fixes xfstest generic/490. Signed-off-by: Andreas Gruenbacher <[email protected]> Reviewed-by: Bob Peterson <[email protected]> Cc: [email protected] # v4.18+
2019-08-09Merge tag 'kvmarm-fixes-for-5.3-2' of ↵Paolo Bonzini9-24/+88
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm fixes for 5.3, take #2 - Fix our system register reset so that we stop writing non-sensical values to them, and track which registers get reset instead. - Sync VMCR back from the GIC on WFI so that KVM has an exact vue of PMR. - Reevaluate state of HW-mapped, level triggered interrupts on enable.
2019-08-09Merge tag 'kvmarm-fixes-for-5.3' of ↵Paolo Bonzini5794-111349/+623260
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm fixes for 5.3 - A bunch of switch/case fall-through annotation, fixing one actual bug - Fix PMU reset bug - Add missing exception class debug strings
2019-08-09selftests: kvm: Adding config fragmentsNaresh Kamboju1-0/+3
selftests kvm test cases need pre-required kernel configs for the test to get pass. Signed-off-by: Naresh Kamboju <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2019-08-09KVM: selftests: Update gitignore file for latest changesThomas Huth1-1/+2
The kvm_create_max_vcpus test has been moved to the main directory, and sync_regs_test is now available on s390x, too. Signed-off-by: Thomas Huth <[email protected]> Acked-by: Shuah Khan <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2019-08-09kvm: remove unnecessary PageReserved checkPaolo Bonzini1-2/+1
The same check is already done in kvm_is_reserved_pfn. Reviewed-by: Sean Christopherson <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2019-08-09MAINTAINERS: handle fbdev changes through drm-misc treeBartlomiej Zolnierkiewicz1-1/+1
fbdev patches will now go to upstream through drm-misc tree (IOW starting with v5.4 merge window fbdev changes will be included in DRM pull request) for improved maintainership and better integration testing. Update MAINTAINERS file accordingly. Acked-by: Daniel Vetter <[email protected]> Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
2019-08-09bcache: Revert "bcache: use sysfs_match_string() instead of ↵Coly Li1-8/+12
__sysfs_match_string()" This reverts commit 89e0341af082dbc170019f908846f4a424efc86b. In drivers/md/bcache/sysfs.c:bch_snprint_string_list(), NULL pointer at the end of list is necessary. Remove the NULL from last element of each lists will cause the following panic, [ 4340.455652] bcache: register_cache() registered cache device nvme0n1 [ 4340.464603] bcache: register_bdev() registered backing device sdk [ 4421.587335] bcache: bch_cached_dev_run() cached dev sdk is running already [ 4421.587348] bcache: bch_cached_dev_attach() Caching sdk as bcache0 on set 354e1d46-d99f-4d8b-870b-078b80dc88a6 [ 5139.247950] general protection fault: 0000 [#1] SMP NOPTI [ 5139.247970] CPU: 9 PID: 5896 Comm: cat Not tainted 4.12.14-95.29-default #1 SLE12-SP4 [ 5139.247988] Hardware name: HPE ProLiant DL380 Gen10/ProLiant DL380 Gen10, BIOS U30 04/18/2019 [ 5139.248006] task: ffff888fb25c0b00 task.stack: ffff9bbacc704000 [ 5139.248021] RIP: 0010:string+0x21/0x70 [ 5139.248030] RSP: 0018:ffff9bbacc707bf0 EFLAGS: 00010286 [ 5139.248043] RAX: ffffffffa7e432e3 RBX: ffff8881c20da02a RCX: ffff0a00ffffff04 [ 5139.248058] RDX: 3f00656863616362 RSI: ffff8881c20db000 RDI: ffffffffffffffff [ 5139.248075] RBP: ffff8881c20db000 R08: 0000000000000000 R09: ffff8881c20da02a [ 5139.248090] R10: 0000000000000004 R11: 0000000000000000 R12: ffff9bbacc707c48 [ 5139.248104] R13: 0000000000000fd6 R14: ffffffffc0665855 R15: ffffffffc0665855 [ 5139.248119] FS: 00007faf253b8700(0000) GS:ffff88903f840000(0000) knlGS:0000000000000000 [ 5139.248137] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 5139.248149] CR2: 00007faf25395008 CR3: 0000000f72150006 CR4: 00000000007606e0 [ 5139.248164] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 5139.248179] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 5139.248193] PKRU: 55555554 [ 5139.248200] Call Trace: [ 5139.248210] vsnprintf+0x1fb/0x510 [ 5139.248221] snprintf+0x39/0x40 [ 5139.248238] bch_snprint_string_list.constprop.15+0x5b/0x90 [bcache] [ 5139.248256] __bch_cached_dev_show+0x44d/0x5f0 [bcache] [ 5139.248270] ? __alloc_pages_nodemask+0xb2/0x210 [ 5139.248284] bch_cached_dev_show+0x2c/0x50 [bcache] [ 5139.248297] sysfs_kf_seq_show+0xbb/0x190 [ 5139.248308] seq_read+0xfc/0x3c0 [ 5139.248317] __vfs_read+0x26/0x140 [ 5139.248327] vfs_read+0x87/0x130 [ 5139.248336] SyS_read+0x42/0x90 [ 5139.248346] do_syscall_64+0x74/0x160 [ 5139.248358] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 5139.248370] RIP: 0033:0x7faf24eea370 [ 5139.248379] RSP: 002b:00007fff82d03f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 5139.248395] RAX: ffffffffffffffda RBX: 0000000000020000 RCX: 00007faf24eea370 [ 5139.248411] RDX: 0000000000020000 RSI: 00007faf25396000 RDI: 0000000000000003 [ 5139.248426] RBP: 00007faf25396000 R08: 00000000ffffffff R09: 0000000000000000 [ 5139.248441] R10: 000000007c9d4d41 R11: 0000000000000246 R12: 00007faf25396000 [ 5139.248456] R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000fff [ 5139.248892] Code: ff ff ff 0f 1f 80 00 00 00 00 49 89 f9 48 89 cf 48 c7 c0 e3 32 e4 a7 48 c1 ff 30 48 81 fa ff 0f 00 00 48 0f 46 d0 48 85 ff 74 45 <44> 0f b6 02 48 8d 42 01 45 84 c0 74 38 48 01 fa 4c 89 cf eb 0e The simplest way to fix is to revert commit 89e0341af082 ("bcache: use sysfs_match_string() instead of __sysfs_match_string()"). This bug was introduced in Linux v5.2, so this fix only applies to Linux v5.2 is enough for stable tree maintainer. Fixes: 89e0341af082 ("bcache: use sysfs_match_string() instead of __sysfs_match_string()") Cc: [email protected] Cc: Alexandru Ardelean <[email protected]> Reported-by: Peifeng Lin <[email protected]> Acked-by: Alexandru Ardelean <[email protected]> Signed-off-by: Coly Li <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2019-08-09s390/vdso: map vdso also for statically linked binariesHeiko Carstens1-5/+0
s390 does not map the vdso for statically linked binaries, assuming that this doesn't make sense. See commit fc5243d98ac2 ("[S390] arch_setup_additional_pages arguments"). However with glibc commit d665367f596d ("linux: Enable vDSO for static linking as default (BZ#19767)") and commit 5e855c895401 ("s390: Enable VDSO for static linking") the vdso is also used for statically linked binaries - if the kernel would make it available. Therefore map the vdso always, just like all other architectures. Reported-by: Stefan Liebler <[email protected]> Signed-off-by: Heiko Carstens <[email protected]> Signed-off-by: Vasily Gorbik <[email protected]>
2019-08-09KVM: arm/arm64: vgic: Reevaluate level sensitive interrupts on enableAlexandru Elisei1-0/+16
A HW mapped level sensitive interrupt asserted by a device will not be put into the ap_list if it is disabled at the VGIC level. When it is enabled again, it will be inserted into the ap_list and written to a list register on guest entry regardless of the state of the device. We could argue that this can also happen on real hardware, when the command to enable the interrupt reached the GIC before the device had the chance to de-assert the interrupt signal; however, we emulate the distributor and redistributors in software and we can do better than that. Signed-off-by: Alexandru Elisei <[email protected]> Signed-off-by: Marc Zyngier <[email protected]>
2019-08-09KVM: arm: Don't write junk to CP15 registers on resetMarc Zyngier1-8/+15
At the moment, the way we reset CP15 registers is mildly insane: We write junk to them, call the reset functions, and then check that we have something else in them. The "fun" thing is that this can happen while the guest is running (PSCI, for example). If anything in KVM has to evaluate the state of a CP15 register while junk is in there, bad thing may happen. Let's stop doing that. Instead, we track that we have called a reset function for that register, and assume that the reset function has done something. In the end, the very need of this reset check is pretty dubious, as it doesn't check everything (a lot of the CP15 reg leave outside of the cp15_regs[] array). It may well be axed in the near future. Signed-off-by: Marc Zyngier <[email protected]>
2019-08-09KVM: arm64: Don't write junk to sysregs on resetMarc Zyngier1-14/+18
At the moment, the way we reset system registers is mildly insane: We write junk to them, call the reset functions, and then check that we have something else in them. The "fun" thing is that this can happen while the guest is running (PSCI, for example). If anything in KVM has to evaluate the state of a system register while junk is in there, bad thing may happen. Let's stop doing that. Instead, we track that we have called a reset function for that register, and assume that the reset function has done something. This requires fixing a couple of sysreg refinition in the trap table. In the end, the very need of this reset check is pretty dubious, as it doesn't check everything (a lot of the sysregs leave outside of the sys_regs[] array). It may well be axed in the near future. Tested-by: Zenghui Yu <[email protected]> Signed-off-by: Marc Zyngier <[email protected]>
2019-08-09Merge tag 'drm-intel-fixes-2019-08-08' of ↵Dave Airlie2-3/+4
git://anongit.freedesktop.org/drm/drm-intel into drm-fixes drm/i915 fixes for v5.3-rc4: - Fix GLK DSI escape clock setting - Fix a memleak on HDCP revoked Ksv error path Signed-off-by: Dave Airlie <[email protected]> From: Jani Nikula <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-08-09Merge tag 'drm-misc-fixes-2019-08-08' of ↵Dave Airlie2-2/+4
git://anongit.freedesktop.org/drm/drm-misc into drm-fixes drm-misc-fixes for v5.3-rc4: - Suspend fix for rockchip - Fix unterminated strncpy cmdline mode parser Signed-off-by: Dave Airlie <[email protected]> From: Maarten Lankhorst <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-08-09Merge branch 'vmwgfx-fixes-5.3' of ↵Dave Airlie1-1/+3
git://people.freedesktop.org/~thomash/linux into drm-fixes One single memory leak fix. Signed-off-by: Dave Airlie <[email protected]> From: Thomas Hellstrom "VMware" <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-08-08dt-bindings: riscv: fix the schema compatible string for the HiFive ↵Paul Walmsley1-1/+1
Unleashed board The YAML binding document for SiFive boards has an incorrect compatible string for the HiFive Unleashed board. Change it to match the name of the board on the SiFive web site: https://www.sifive.com/boards/hifive-unleashed which also matches the contents of the board DT data file: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts#n13 Signed-off-by: Paul Walmsley <[email protected]> Acked-by: Rob Herring <[email protected]>
2019-08-08dt-bindings: riscv: remove obsolete cpus.txtPaul Walmsley2-162/+12
Remove the now-obsolete riscv/cpus.txt DT binding document, since we are using YAML binding documentation instead. While doing so, transfer the explanatory text about 'harts' (with some edits) into the YAML file, at Rob's request. Link: https://lore.kernel.org/linux-riscv/CAL_JsqJs6MtvmuyAknsUxQymbmoV=G+=JfS1PQj9kNHV7fjC9g@mail.gmail.com/ Signed-off-by: Paul Walmsley <[email protected]> Cc: Rob Herring <[email protected]> Reviewed-by: Rob Herring <[email protected]>
2019-08-08RISC-V: Remove udivdi3Palmer Dabbelt2-34/+0
This should never have landed in the first place: it was added as part of 64-bit divide support for 32-bit systems, but the kernel doesn't allow this sort of division. I must have forgotten to remove it. This patch removes the support. Since this routine only worked on 64-bit platforms but was only built on 32-bit platforms, it's essentially just nonsense anyway. Signed-off-by: Palmer Dabbelt <[email protected]> Acked-by: Nicolas Pitre <[email protected]> Link: https://lore.kernel.org/linux-riscv/[email protected]/T/#t Reported-by: Eric Lin <[email protected]> Signed-off-by: Paul Walmsley <[email protected]>
2019-08-08riscv: delay: use do_div() instead of __udivdi3()Paul Walmsley1-1/+5
In preparation for removing __udivdi3() from the RISC-V architecture-specific files, convert its one user to use do_div(). This avoids breaking the RV32 build after __udivdi3() is removed. This second version removes the assignment of the remainder to an unused temporary variable. Thanks to Nicolas Pitre <[email protected]> for the suggestion. Signed-off-by: Paul Walmsley <[email protected]> Cc: Nicolas Pitre <[email protected]>
2019-08-08dt-bindings: Update the riscv,isa string descriptionAtish Patra1-0/+4
Since the RISC-V specification states that ISA description strings are case-insensitive, there's no functional difference between mixed-case, upper-case, and lower-case ISA strings. Thus, to simplify parsing, specify that the letters present in "riscv,isa" must be all lowercase. Suggested-by: Paul Walmsley <[email protected]> Signed-off-by: Atish Patra <[email protected]> Signed-off-by: Paul Walmsley <[email protected]>
2019-08-08Merge tag 'nfs-for-5.3-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds10-75/+135
Pull NFS client fixes from Trond Myklebust: "Highlights include: Stable fixes: - NFSv4: Ensure we check the return value of update_open_stateid() so we correctly track active open state. - NFSv4: Fix for delegation state recovery to ensure we recover all open modes that are active. - NFSv4: Fix an Oops in nfs4_do_setattr Fixes: - NFS: Fix regression whereby fscache errors are appearing on 'nofsc' mounts - NFSv4: Fix a potential sleep while atomic in nfs4_do_reclaim() - NFSv4: Fix a credential refcount leak in nfs41_check_delegation_stateid - pNFS: Report errors from the call to nfs4_select_rw_stateid() - NFSv4: Various other delegation and open stateid recovery fixes - NFSv4: Fix state recovery behaviour when server connection times out" * tag 'nfs-for-5.3-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFSv4: Ensure state recovery handles ETIMEDOUT correctly NFS: Fix regression whereby fscache errors are appearing on 'nofsc' mounts NFSv4: Fix an Oops in nfs4_do_setattr NFSv4: Fix a potential sleep while atomic in nfs4_do_reclaim() NFSv4: Check the return value of update_open_stateid() NFSv4.1: Only reap expired delegations NFSv4.1: Fix open stateid recovery NFSv4: Report the error from nfs4_select_rw_stateid() NFSv4: When recovering state fails with EAGAIN, retry the same recovery NFSv4: Print an error in the syslog when state is marked as irrecoverable NFSv4: Fix delegation state recovery NFSv4: Fix a credential refcount leak in nfs41_check_delegation_stateid
2019-08-08Merge tag 'perf-urgent-for-mingo-5.3-20190808' of ↵Thomas Gleixner14-16/+69
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent perf/urgent fixes: db-export: Adrian Hunter: - Fix thread__exec_comm() picking of main thread COMM for pre-existing, synthesized from /proc data records. annotate: Arnaldo Carvalho de Melo: - Fix printing of unaugmented disassembled instructions from BPF, some lines were leaving leftovers from the previous screen, due to use of newlines by binutils's libopcode disassembler. perf ftrace: He Zhe: - Fix cpumask problems when only one CPU is present. PMU events: Jin Yao: - Add missing "cpu_clk_unhalted.core" event. perf bench: Jiri Olsa: - Fix cpu0 binding in the NUMA benchmarks. s390: Thomas Richter: - Fix module size calculations. build system: Masanari Iida: - Fix a typo in a variable name in the Documentation Makefile misc: Ian Rogers: - Fix include paths in ui directory. Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-08-08perf pmu-events: Fix missing "cpu_clk_unhalted.core" eventJin Yao1-0/+1
The events defined in pmu-events JSON are parsed and added into perf tool. For fixed counters, we handle the encodings between JSON and perf by using a static array fixed[]. But the fixed[] has missed an important event "cpu_clk_unhalted.core". For example, on the Tremont platform, [root@localhost ~]# perf stat -e cpu_clk_unhalted.core -a event syntax error: 'cpu_clk_unhalted.core' \___ parser error With this patch, the event cpu_clk_unhalted.core can be parsed. [root@localhost perf]# ./perf stat -e cpu_clk_unhalted.core -a -vvv ------------------------------------------------------------ perf_event_attr: type 4 size 112 config 0x3c sample_type IDENTIFIER read_format TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING disabled 1 inherit 1 exclude_guest 1 ------------------------------------------------------------ ... Signed-off-by: Jin Yao <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Jin Yao <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Kan Liang <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-08-08perf annotate: Fix s390 gap between kernel end and module startThomas Richter3-1/+24
During execution of command 'perf top' the error message: Not enough memory for annotating '__irf_end' symbol!) is emitted from this call sequence: __cmd_top perf_top__mmap_read perf_top__mmap_read_idx perf_event__process_sample hist_entry_iter__add hist_iter__top_callback perf_top__record_precise_ip hist_entry__inc_addr_samples symbol__inc_addr_samples symbol__get_annotation symbol__alloc_hist In this function the size of symbol __irf_end is calculated. The size of a symbol is the difference between its start and end address. When the symbol was read the first time, its start and end was set to: symbol__new: __irf_end 0xe954d0-0xe954d0 which is correct and maps with /proc/kallsyms: root@s8360046:~/linux-4.15.0/tools/perf# fgrep _irf_end /proc/kallsyms 0000000000e954d0 t __irf_end root@s8360046:~/linux-4.15.0/tools/perf# In function symbol__alloc_hist() the end of symbol __irf_end is symbol__alloc_hist sym:__irf_end start:0xe954d0 end:0x3ff80045a8 which is identical with the first module entry in /proc/kallsyms This results in a symbol size of __irf_req for histogram analyses of 70334140059072 bytes and a malloc() for this requested size fails. The root cause of this is function __dso__load_kallsyms() +-> symbols__fixup_end() Function symbols__fixup_end() enlarges the last symbol in the kallsyms map: # fgrep __irf_end /proc/kallsyms 0000000000e954d0 t __irf_end # to the start address of the first module: # cat /proc/kallsyms | sort | egrep ' [tT] ' .... 0000000000e952d0 T __security_initcall_end 0000000000e954d0 T __initramfs_size 0000000000e954d0 t __irf_end 000003ff800045a8 T fc_get_event_number [scsi_transport_fc] 000003ff800045d0 t store_fc_vport_disable [scsi_transport_fc] 000003ff800046a8 T scsi_is_fc_rport [scsi_transport_fc] 000003ff800046d0 t fc_target_setup [scsi_transport_fc] On s390 the kernel is located around memory address 0x200, 0x10000 or 0x100000, depending on linux version. Modules however start some- where around 0x3ff xxxx xxxx. This is different than x86 and produces a large gap for which histogram allocation fails. Fix this by detecting the kernel's last symbol and do no adjustment for it. Introduce a weak function and handle s390 specifics. Reported-by: Klaus Theurich <[email protected]> Signed-off-by: Thomas Richter <[email protected]> Acked-by: Heiko Carstens <[email protected]> Cc: Hendrik Brueckner <[email protected]> Cc: Vasily Gorbik <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-08-08perf record: Fix module size on s390Thomas Richter3-3/+16
On s390 the modules loaded in memory have the text segment located after the GOT and Relocation table. This can be seen with this output: [root@m35lp76 perf]# fgrep qeth /proc/modules qeth 151552 1 qeth_l2, Live 0x000003ff800b2000 ... [root@m35lp76 perf]# cat /sys/module/qeth/sections/.text 0x000003ff800b3990 [root@m35lp76 perf]# There is an offset of 0x1990 bytes. The size of the qeth module is 151552 bytes (0x25000 in hex). The location of the GOT/relocation table at the beginning of a module is unique to s390. commit 203d8a4aa6ed ("perf s390: Fix 'start' address of module's map") adjusts the start address of a module in the map structures, but does not adjust the size of the modules. This leads to overlapping of module maps as this example shows: [root@m35lp76 perf] # ./perf report -D 0 0 0xfb0 [0xa0]: PERF_RECORD_MMAP -1/0: [0x3ff800b3990(0x25000) @ 0]: x /lib/modules/.../qeth.ko.xz 0 0 0x1050 [0xb0]: PERF_RECORD_MMAP -1/0: [0x3ff800d85a0(0x8000) @ 0]: x /lib/modules/.../ip6_tables.ko.xz The module qeth.ko has an adjusted start address modified to b3990, but its size is unchanged and the module ends at 0x3ff800d8990. This end address overlaps with the next modules start address of 0x3ff800d85a0. When the size of the leading GOT/Relocation table stored in the beginning of the text segment (0x1990 bytes) is subtracted from module qeth end address, there are no overlaps anymore: 0x3ff800d8990 - 0x1990 = 0x0x3ff800d7000 which is the same as 0x3ff800b2000 + 0x25000 = 0x0x3ff800d7000. To fix this issue, also adjust the modules size in function arch__fix_module_text_start(). Add another function parameter named size and reduce the size of the module when the text segment start address is changed. Output after: 0 0 0xfb0 [0xa0]: PERF_RECORD_MMAP -1/0: [0x3ff800b3990(0x23670) @ 0]: x /lib/modules/.../qeth.ko.xz 0 0 0x1050 [0xb0]: PERF_RECORD_MMAP -1/0: [0x3ff800d85a0(0x7a60) @ 0]: x /lib/modules/.../ip6_tables.ko.xz Reported-by: Stefan Liebler <[email protected]> Signed-off-by: Thomas Richter <[email protected]> Acked-by: Heiko Carstens <[email protected]> Cc: Hendrik Brueckner <[email protected]> Cc: Vasily Gorbik <[email protected]> Cc: [email protected] Fixes: 203d8a4aa6ed ("perf s390: Fix 'start' address of module's map") Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-08-08perf tools: Fix include paths in ui directoryIan Rogers2-5/+6
These paths point to the wrong location but still work because they get picked up by a -I flag that happens to direct to the correct file. Fix paths to point to the correct location without -I flags. Signed-off-by: Ian Rogers <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-08-08perf tools: Fix a typo in a variable name in the Documentation MakefileMasanari Iida1-1/+1
This patch fix a spelling typo in a variable name in the Documentation Makefile. Signed-off-by: Masanari Iida <[email protected]> Reviewed-by: Mukesh Ojha <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-08-08perf cpumap: Fix writing to illegal memory in handling cpumap maskHe Zhe1-1/+4
cpu_map__snprint_mask() would write to illegal memory pointed by zalloc(0) when there is only one cpu. This patch fixes the calculation and adds sanity check against the input parameters. Signed-off-by: He Zhe <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Alexey Budankov <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Kan Liang <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Fixes: 4400ac8a9a90 ("perf cpumap: Introduce cpu_map__snprint_mask()") Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-08-08perf ftrace: Fix failure to set cpumask when only one cpu is presentHe Zhe1-1/+1
The buffer containing the string used to set cpumask is overwritten at the end of the string later in cpu_map__snprint_mask due to not enough memory space, when there is only one cpu. And thus causes the following failure: $ perf ftrace ls failed to reset ftrace $ This patch fixes the calculation of the cpumask string size. Signed-off-by: He Zhe <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Alexey Budankov <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Kan Liang <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Fixes: dc23103278c5 ("perf ftrace: Add support for -a and -C option") Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-08-08perf db-export: Fix thread__exec_comm()Adrian Hunter1-1/+11
Threads synthesized from /proc have comms with a start time of zero, and not marked as "exec". Currently, there can be 2 such comms. The first is created by processing a synthesized fork event and is set to the parent's comm string, and the second by processing a synthesized comm event set to the thread's current comm string. In the absence of an "exec" comm, thread__exec_comm() picks the last (oldest) comm, which, in the case above, is the parent's comm string. For a main thread, that is very probably wrong. Use the second-to-last in that case. This affects only db-export because it is the only user of thread__exec_comm(). Example: $ sudo perf record -a -o pt-a-sleep-1 -e intel_pt//u -- sleep 1 $ sudo chown ahunter pt-a-sleep-1 Before: $ perf script -i pt-a-sleep-1 --itrace=bep -s tools/perf/scripts/python/export-to-sqlite.py pt-a-sleep-1.db branches calls $ sqlite3 -header -column pt-a-sleep-1.db 'select * from comm_threads_view' comm_id command thread_id pid tid ---------- ---------- ---------- ---------- ---------- 1 swapper 1 0 0 2 rcu_sched 2 10 10 3 kthreadd 3 78 78 5 sudo 4 15180 15180 5 sudo 5 15180 15182 7 kworker/4: 6 10335 10335 8 kthreadd 7 55 55 10 systemd 8 865 865 10 systemd 9 865 875 13 perf 10 15181 15181 15 sleep 10 15181 15181 16 kworker/3: 11 14179 14179 17 kthreadd 12 29376 29376 19 systemd 13 746 746 21 systemd 14 401 401 23 systemd 15 879 879 23 systemd 16 879 945 25 kthreadd 17 556 556 27 kworker/u1 18 14136 14136 28 kworker/u1 19 15021 15021 29 kthreadd 20 509 509 31 systemd 21 836 836 31 systemd 22 836 967 33 systemd 23 1148 1148 33 systemd 24 1148 1163 35 kworker/2: 25 17988 17988 36 kworker/0: 26 13478 13478 After: $ perf script -i pt-a-sleep-1 --itrace=bep -s tools/perf/scripts/python/export-to-sqlite.py pt-a-sleep-1b.db branches calls $ sqlite3 -header -column pt-a-sleep-1b.db 'select * from comm_threads_view' comm_id command thread_id pid tid ---------- ---------- ---------- ---------- ---------- 1 swapper 1 0 0 2 rcu_sched 2 10 10 3 kswapd0 3 78 78 4 perf 4 15180 15180 4 perf 5 15180 15182 6 kworker/4: 6 10335 10335 7 kcompactd0 7 55 55 8 accounts-d 8 865 865 8 accounts-d 9 865 875 10 perf 10 15181 15181 12 sleep 10 15181 15181 13 kworker/3: 11 14179 14179 14 kworker/1: 12 29376 29376 15 haveged 13 746 746 16 systemd-jo 14 401 401 17 NetworkMan 15 879 879 17 NetworkMan 16 879 945 19 irq/131-iw 17 556 556 20 kworker/u1 18 14136 14136 21 kworker/u1 19 15021 15021 22 kworker/u1 20 509 509 23 thermald 21 836 836 23 thermald 22 836 967 25 unity-sett 23 1148 1148 25 unity-sett 24 1148 1163 27 kworker/2: 25 17988 17988 28 kworker/0: 26 13478 13478 Signed-off-by: Adrian Hunter <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: [email protected] Fixes: 65de51f93ebf ("perf tools: Identify which comms are from exec") Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-08-08perf annotate: Fix printing of unaugmented disassembled instructions from BPFArnaldo Carvalho de Melo1-1/+1
The code to disassemble BPF programs uses binutil's disassembling routines, and those use in turn fprintf to print to a memstream FILE, adding a newline at the end of each line, which ends up confusing the TUI routines called from: annotate_browser__write() annotate_line__write() annotate_browser__printf() ui_browser__vprintf() SLsmg_vprintf() The SLsmg_vprintf() function in the slang library gets confused with the terminating newline, so make the disasm_line__parse() function that parses the lines produced by the BPF specific disassembler (that uses binutil's libopcodes) and the lines produced by the objdump based disassembler used for everything else (and that doesn't adds this terminating newline) trim the end of the line in addition of the beginning. This way when disasm_line->ops.raw, i.e. for instructions without a special scnprintf() method, we'll not have that \n getting in the way of filling the screen right after the instruction with spaces to avoid leaving what was on the screen before and thus garbling the annotation screen, breaking scrolling, etc. Cc: Adrian Hunter <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Song Liu <[email protected]> Fixes: 6987561c9e86 ("perf annotate: Enable annotation of BPF programs") Link: https://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-08-08arm64: mm: add missing PTE_SPECIAL in pte_mkdevmap on arm64Jia He1-2/+5
Without this patch, the MAP_SYNC test case will cause a print_bad_pte warning on arm64 as follows: [ 25.542693] BUG: Bad page map in process mapdax333 pte:2e8000448800f53 pmd:41ff5f003 [ 25.546360] page:ffff7e0010220000 refcount:1 mapcount:-1 mapping:ffff8003e29c7440 index:0x0 [ 25.550281] ext4_dax_aops [ 25.550282] name:"__aaabbbcccddd__" [ 25.551553] flags: 0x3ffff0000001002(referenced|reserved) [ 25.555802] raw: 03ffff0000001002 ffff8003dfffa908 0000000000000000 ffff8003e29c7440 [ 25.559446] raw: 0000000000000000 0000000000000000 00000001fffffffe 0000000000000000 [ 25.563075] page dumped because: bad pte [ 25.564938] addr:0000ffffbe05b000 vm_flags:208000fb anon_vma:0000000000000000 mapping:ffff8003e29c7440 index:0 [ 25.574272] file:__aaabbbcccddd__ fault:ext4_dax_fault mmmmap:ext4_file_mmap readpage:0x0 [ 25.578799] CPU: 1 PID: 1180 Comm: mapdax333 Not tainted 5.2.0+ #21 [ 25.581702] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015 [ 25.585624] Call trace: [ 25.587008] dump_backtrace+0x0/0x178 [ 25.588799] show_stack+0x24/0x30 [ 25.590328] dump_stack+0xa8/0xcc [ 25.591901] print_bad_pte+0x18c/0x218 [ 25.593628] unmap_page_range+0x778/0xc00 [ 25.595506] unmap_single_vma+0x94/0xe8 [ 25.597304] unmap_vmas+0x90/0x108 [ 25.598901] unmap_region+0xc0/0x128 [ 25.600566] __do_munmap+0x284/0x3f0 [ 25.602245] __vm_munmap+0x78/0xe0 [ 25.603820] __arm64_sys_munmap+0x34/0x48 [ 25.605709] el0_svc_common.constprop.0+0x78/0x168 [ 25.607956] el0_svc_handler+0x34/0x90 [ 25.609698] el0_svc+0x8/0xc [...] The root cause is in _vm_normal_page, without the PTE_SPECIAL bit, the return value will be incorrectly set to pfn_to_page(pfn) instead of NULL. Besides, this patch also rewrite the pmd_mkdevmap to avoid setting PTE_SPECIAL for pmd The MAP_SYNC test case is as follows(Provided by Yibo Cai) $#include <stdio.h> $#include <string.h> $#include <unistd.h> $#include <sys/file.h> $#include <sys/mman.h> $#ifndef MAP_SYNC $#define MAP_SYNC 0x80000 $#endif /* mount -o dax /dev/pmem0 /mnt */ $#define F "/mnt/__aaabbbcccddd__" int main(void) { int fd; char buf[4096]; void *addr; if ((fd = open(F, O_CREAT|O_TRUNC|O_RDWR, 0644)) < 0) { perror("open1"); return 1; } if (write(fd, buf, 4096) != 4096) { perror("lseek"); return 1; } addr = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_SYNC, fd, 0); if (addr == MAP_FAILED) { perror("mmap"); printf("did you mount with '-o dax'?\n"); return 1; } memset(addr, 0x55, 4096); if (munmap(addr, 4096) == -1) { perror("munmap"); return 1; } close(fd); return 0; } Fixes: 73b20c84d42d ("arm64: mm: implement pte_devmap support") Reported-by: Yibo Cai <[email protected]> Acked-by: Will Deacon <[email protected]> Acked-by: Robin Murphy <[email protected]> Signed-off-by: Jia He <[email protected]> Signed-off-by: Catalin Marinas <[email protected]>
2019-08-08Merge tag '5.3-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6Linus Torvalds4-24/+49
Pull cifs fixes from Steve French: "Six small SMB3 fixes, two for stable" * tag '5.3-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6: SMB3: Kernel oops mounting a encryptData share with CONFIG_DEBUG_VIRTUAL smb3: update TODO list of missing features smb3: send CAP_DFS capability during session setup SMB3: Fix potential memory leak when processing compound chain SMB3: Fix deadlock in validate negotiate hits reconnect cifs: fix rmmod regression in cifs.ko caused by force_sig changes
2019-08-08loop: set PF_MEMALLOC_NOIO for the worker threadMikulas Patocka1-1/+1
A deadlock with this stacktrace was observed. The loop thread does a GFP_KERNEL allocation, it calls into dm-bufio shrinker and the shrinker depends on I/O completion in the dm-bufio subsystem. In order to fix the deadlock (and other similar ones), we set the flag PF_MEMALLOC_NOIO at loop thread entry. PID: 474 TASK: ffff8813e11f4600 CPU: 10 COMMAND: "kswapd0" #0 [ffff8813dedfb938] __schedule at ffffffff8173f405 #1 [ffff8813dedfb990] schedule at ffffffff8173fa27 #2 [ffff8813dedfb9b0] schedule_timeout at ffffffff81742fec #3 [ffff8813dedfba60] io_schedule_timeout at ffffffff8173f186 #4 [ffff8813dedfbaa0] bit_wait_io at ffffffff8174034f #5 [ffff8813dedfbac0] __wait_on_bit at ffffffff8173fec8 #6 [ffff8813dedfbb10] out_of_line_wait_on_bit at ffffffff8173ff81 #7 [ffff8813dedfbb90] __make_buffer_clean at ffffffffa038736f [dm_bufio] #8 [ffff8813dedfbbb0] __try_evict_buffer at ffffffffa0387bb8 [dm_bufio] #9 [ffff8813dedfbbd0] dm_bufio_shrink_scan at ffffffffa0387cc3 [dm_bufio] #10 [ffff8813dedfbc40] shrink_slab at ffffffff811a87ce #11 [ffff8813dedfbd30] shrink_zone at ffffffff811ad778 #12 [ffff8813dedfbdc0] kswapd at ffffffff811ae92f #13 [ffff8813dedfbec0] kthread at ffffffff810a8428 #14 [ffff8813dedfbf50] ret_from_fork at ffffffff81745242 PID: 14127 TASK: ffff881455749c00 CPU: 11 COMMAND: "loop1" #0 [ffff88272f5af228] __schedule at ffffffff8173f405 #1 [ffff88272f5af280] schedule at ffffffff8173fa27 #2 [ffff88272f5af2a0] schedule_preempt_disabled at ffffffff8173fd5e #3 [ffff88272f5af2b0] __mutex_lock_slowpath at ffffffff81741fb5 #4 [ffff88272f5af330] mutex_lock at ffffffff81742133 #5 [ffff88272f5af350] dm_bufio_shrink_count at ffffffffa03865f9 [dm_bufio] #6 [ffff88272f5af380] shrink_slab at ffffffff811a86bd #7 [ffff88272f5af470] shrink_zone at ffffffff811ad778 #8 [ffff88272f5af500] do_try_to_free_pages at ffffffff811adb34 #9 [ffff88272f5af590] try_to_free_pages at ffffffff811adef8 #10 [ffff88272f5af610] __alloc_pages_nodemask at ffffffff811a09c3 #11 [ffff88272f5af710] alloc_pages_current at ffffffff811e8b71 #12 [ffff88272f5af760] new_slab at ffffffff811f4523 #13 [ffff88272f5af7b0] __slab_alloc at ffffffff8173a1b5 #14 [ffff88272f5af880] kmem_cache_alloc at ffffffff811f484b #15 [ffff88272f5af8d0] do_blockdev_direct_IO at ffffffff812535b3 #16 [ffff88272f5afb00] __blockdev_direct_IO at ffffffff81255dc3 #17 [ffff88272f5afb30] xfs_vm_direct_IO at ffffffffa01fe3fc [xfs] #18 [ffff88272f5afb90] generic_file_read_iter at ffffffff81198994 #19 [ffff88272f5afc50] __dta_xfs_file_read_iter_2398 at ffffffffa020c970 [xfs] #20 [ffff88272f5afcc0] lo_rw_aio at ffffffffa0377042 [loop] #21 [ffff88272f5afd70] loop_queue_work at ffffffffa0377c3b [loop] #22 [ffff88272f5afe60] kthread_worker_fn at ffffffff810a8a0c #23 [ffff88272f5afec0] kthread at ffffffff810a8428 #24 [ffff88272f5aff50] ret_from_fork at ffffffff81745242 Signed-off-by: Mikulas Patocka <[email protected]> Cc: [email protected] Signed-off-by: Jens Axboe <[email protected]>
2019-08-08usb: setup authorized_default attributes using usb_bus_notifyThiébaud Weksteen3-123/+126
Currently, the authorized_default and interface_authorized_default attributes for HCD are set up after the uevent has been sent to userland. This creates a race condition where userland may fail to access this file when processing the event. Move the appending of these attributes earlier relying on the usb_bus_notify dispatcher. Signed-off-by: Thiébaud Weksteen <[email protected]> Cc: stable <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-08bdev: Fixup error handling in blkdev_get()Jan Kara1-1/+4
Commit 89e524c04fa9 ("loop: Fix mount(2) failure due to race with LOOP_SET_FD") converted blkdev_get() to use the new helpers for finishing claiming of a block device. However the conversion botched the error handling in blkdev_get() and thus the bdev has been marked as held even in case __blkdev_get() returned error. This led to occasional warnings with block/001 test from blktests like: kernel: WARNING: CPU: 5 PID: 907 at fs/block_dev.c:1899 __blkdev_put+0x396/0x3a0 Correct the error handling. CC: [email protected] Fixes: 89e524c04fa9 ("loop: Fix mount(2) failure due to race with LOOP_SET_FD") Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
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