October 2018 - Linux-stable-mirror

[PATCH] mm/thp: fix call to mmu_notifier in set_pmd_migration_entry() v2

by jglisse＠redhat.com

From: Jérôme Glisse <jglisse(a)redhat.com> Inside set_pmd_migration_entry() we are holding page table locks and thus we can not sleep so we can not call invalidate_range_start/end() So remove call to mmu_notifier_invalidate_range_start/end() because they are call inside the function calling set_pmd_migration_entry() (see try_to_unmap_one()). Changed since v1: - removed call to invalidate_range() and updated commit message Signed-off-by: Jérôme Glisse <jglisse(a)redhat.com> Reported-by: Andrea Arcangeli <aarcange(a)redhat.com> Reviewed-by: Zi Yan <zi.yan(a)cs.rutgers.edu> Acked-by: Michal Hocko <mhocko(a)kernel.org> Cc: Andrew Morton <akpm(a)linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Cc: Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> Cc: "H. Peter Anvin" <hpa(a)zytor.com> Cc: Anshuman Khandual <khandual(a)linux.vnet.ibm.com> Cc: Dave Hansen <dave.hansen(a)intel.com> Cc: David Nellans <dnellans(a)nvidia.com> Cc: Ingo Molnar <mingo(a)elte.hu> Cc: Mel Gorman <mgorman(a)techsingularity.net> Cc: Minchan Kim <minchan(a)kernel.org> Cc: Naoya Horiguchi <n-horiguchi(a)ah.jp.nec.com> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: stable(a)vger.kernel.org --- mm/huge_memory.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 533f9b00147d..a5b28547e321 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2885,9 +2885,6 @@ void set_pmd_migration_entry(struct page_vma_mapped_walk *pvmw, if (!(pvmw->pmd && !pvmw->pte)) return; - mmu_notifier_invalidate_range_start(mm, address, - address + HPAGE_PMD_SIZE); - flush_cache_range(vma, address, address + HPAGE_PMD_SIZE); pmdval = *pvmw->pmd; pmdp_invalidate(vma, address, pvmw->pmd); @@ -2900,9 +2897,6 @@ void set_pmd_migration_entry(struct page_vma_mapped_walk *pvmw, set_pmd_at(mm, address, pvmw->pmd, pmdswp); page_remove_rmap(page, true); put_page(page); - - mmu_notifier_invalidate_range_end(mm, address, - address + HPAGE_PMD_SIZE); } void remove_migration_pmd(struct page_vma_mapped_walk *pvmw, struct page *new) -- 2.17.2

7 years

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[PATCH v7 0/7] mm: Merge hmm into devm_memremap_pages, mark GPL-only

by Dan Williams

Changes since v6 [1]: * Rebase on next-20181008 and fixup conflicts with the xarray conversion and hotplug optimizations * It has soaked on a 0day visible branch for a few days without any reports. [1]: https://lkml.org/lkml/2018/9/13/104 --- Hi Andrew, Jérôme has reviewed the cleanups, thanks Jérôme. We still disagree on the EXPORT_SYMBOL_GPL status of the core HMM implementation, but Logan, Christoph and I continue to support marking all devm_memremap_pages() derivatives EXPORT_SYMBOL_GPL. HMM has been upstream for over a year, with no in-tree users it is clear it was designed first and foremost for out of tree drivers. It takes advantage of a facility Christoph and I spearheaded to support persistent memory. It continues to see expanding use cases with no clear end date when it will stop attracting features / revisions. It is not suitable to export devm_memremap_pages() as a stable 3rd party driver api. devm_memremap_pages() is a facility that can create struct page entries for any arbitrary range and give out-of-tree drivers the ability to subvert core aspects of page management. It, and anything derived from it (e.g. hmm, pcip2p, etc...), is a deep integration point into the core kernel, and an EXPORT_SYMBOL_GPL() interface. Commit 31c5bda3a656 "mm: fix exports that inadvertently make put_page() EXPORT_SYMBOL_GPL" was merged ahead of this series to relieve some of the pressure from innocent consumers of put_page(), but now we need this series to address *producers* of device pages. More details and justification in the changelogs. The 0day infrastructure has reported success across 152 configs and this survives the libnvdimm unit test suite. Aside from the controversial bits the diffstat is compelling at: 7 files changed, 126 insertions(+), 323 deletions(-) Note that the series has some minor collisions with Alex's recent series to improve devm_memremap_pages() scalability [2]. So, whichever you take first the other will need a minor rebase. [2]: https://www.lkml.org/lkml/2018/9/11/10 Dan Williams (7): mm, devm_memremap_pages: Mark devm_memremap_pages() EXPORT_SYMBOL_GPL mm, devm_memremap_pages: Kill mapping "System RAM" support mm, devm_memremap_pages: Fix shutdown handling mm, devm_memremap_pages: Add MEMORY_DEVICE_PRIVATE support mm, hmm: Use devm semantics for hmm_devmem_{add,remove} mm, hmm: Replace hmm_devmem_pages_create() with devm_memremap_pages() mm, hmm: Mark hmm_devmem_{add,add_resource} EXPORT_SYMBOL_GPL drivers/dax/pmem.c | 14 -- drivers/nvdimm/pmem.c | 13 +- include/linux/hmm.h | 4 include/linux/memremap.h | 2 kernel/memremap.c | 94 +++++++---- mm/hmm.c | 305 +++++-------------------------------- tools/testing/nvdimm/test/iomap.c | 17 ++ 7 files changed, 126 insertions(+), 323 deletions(-)

7 years

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[PATCH 4.4 00/27] 4.4.161-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.4.161 release. There are 27 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Sat Oct 13 15:25:23 UTC 2018. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.4.161-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.4.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.4.161-rc1 Gao Feng <gfree.wind(a)vip.163.com> ebtables: arpreply: Add the standard target sanity check Zhi Chen <zhichen(a)codeaurora.org> ath10k: fix scan crash due to incorrect length calculation Eric Dumazet <edumazet(a)google.com> tcp: add tcp_ooo_try_coalesce() helper Eric Dumazet <edumazet(a)google.com> tcp: call tcp_drop() from tcp_data_queue_ofo() Eric Dumazet <edumazet(a)google.com> tcp: free batches of packets in tcp_prune_ofo_queue() Eric Dumazet <edumazet(a)google.com> tcp: fix a stale ooo_last_skb after a replace Yaogong Wang <wygivan(a)google.com> tcp: use an RB tree for ooo receive queue Eric Dumazet <edumazet(a)google.com> tcp: increment sk_drops for dropped rx packets Richard Weinberger <richard(a)nod.at> ubifs: Check for name being NULL while mounting Cong Wang <xiyou.wangcong(a)gmail.com> ucma: fix a use-after-free in ucma_resolve_ip() Vineet Gupta <vgupta(a)synopsys.com> ARC: clone syscall to setp r25 as thread pointer Michal Suchanek <msuchanek(a)suse.de> powerpc/fadump: Return error when fadump registration fails Carl Huang <cjhuang(a)codeaurora.org> ath10k: fix use-after-free in ath10k_wmi_cmd_send_nowait Prateek Sood <prsood(a)codeaurora.org> cgroup: Fix deadlock in cpu hotplug path Theodore Ts'o <tytso(a)mit.edu> ext4: always verify the magic number in xattr blocks Theodore Ts'o <tytso(a)mit.edu> ext4: add corruption check in ext4_xattr_set_entry() Guenter Roeck <linux(a)roeck-us.net> of: unittest: Disable interrupt node tests for old world MAC systems Johan Hovold <johan(a)kernel.org> USB: serial: simple: add Motorola Tetra MTP6550 id Mathias Nyman <mathias.nyman(a)linux.intel.com> xhci: Add missing CAS workaround for Intel Sunrise Point xHCI Mike Snitzer <snitzer(a)redhat.com> dm cache: fix resize crash if user doesn't reload cache table Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> PM / core: Clear the direct_complete flag on errors Felix Fietkau <nbd(a)nbd.name> mac80211: fix setting IEEE80211_KEY_FLAG_RX_MGMT for AP mode keys Daniel Drake <drake(a)endlessm.com> PCI: Reprogram bridge prefetch registers on resume Andy Lutomirski <luto(a)kernel.org> x86/vdso: Fix vDSO syscall fallback asm constraint regression Andy Lutomirski <luto(a)kernel.org> x86/vdso: Fix asm constraints on vDSO syscall fallbacks Tomi Valkeinen <tomi.valkeinen(a)ti.com> fbdev/omapfb: fix omapfb_memory_read infoleak Jann Horn <jannh(a)google.com> mm/vmstat.c: skip NR_TLB_REMOTE_FLUSH* properly ------------- Diffstat: Makefile | 4 +- arch/arc/kernel/process.c | 20 ++ arch/powerpc/kernel/fadump.c | 23 +- arch/x86/entry/vdso/vclock_gettime.c | 26 +- drivers/base/power/main.c | 5 +- drivers/infiniband/core/ucma.c | 2 + drivers/md/dm-cache-target.c | 9 +- drivers/net/wireless/ath/ath10k/trace.h | 12 +- drivers/net/wireless/ath/ath10k/wmi-tlv.c | 8 +- drivers/net/wireless/ath/ath10k/wmi.c | 2 +- drivers/of/unittest.c | 28 +- drivers/pci/pci.c | 27 +- drivers/usb/host/xhci-pci.c | 2 + drivers/usb/serial/usb-serial-simple.c | 3 +- drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c | 5 +- fs/ext4/xattr.c | 28 +- fs/ubifs/super.c | 3 + include/linux/netfilter_bridge/ebtables.h | 5 + include/linux/skbuff.h | 8 + include/linux/tcp.h | 7 +- include/net/sock.h | 7 + include/net/tcp.h | 2 +- kernel/cgroup.c | 6 +- mm/vmstat.c | 3 + net/bridge/netfilter/ebt_arpreply.c | 3 + net/core/skbuff.c | 19 ++ net/ipv4/tcp.c | 4 +- net/ipv4/tcp_input.c | 417 +++++++++++++++--------- net/ipv4/tcp_ipv4.c | 3 +- net/ipv4/tcp_minisocks.c | 1 - net/ipv6/tcp_ipv6.c | 1 + net/mac80211/cfg.c | 2 +- 32 files changed, 453 insertions(+), 242 deletions(-)

7 years

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Re: [PATCH] mm/thp: fix call to mmu_notifier in set_pmd_migration_entry()

by Jerome Glisse

On Fri, Oct 12, 2018 at 06:55:48PM +0200, Michal Hocko wrote: > On Fri 12-10-18 12:09:53, jglisse(a)redhat.com wrote: > > From: Jérôme Glisse <jglisse(a)redhat.com> > > > > Inside set_pmd_migration_entry() we are holding page table locks and > > thus we can not sleep so we can not call invalidate_range_start/end() > > > > So remove call to mmu_notifier_invalidate_range_start/end() and add > > call to mmu_notifier_invalidate_range(). Note that we are already > > calling mmu_notifier_invalidate_range_start/end() inside the function > > calling set_pmd_migration_entry() (see try_to_unmap_one()). > > > > Signed-off-by: Jérôme Glisse <jglisse(a)redhat.com> > > Reported-by: Andrea Arcangeli <aarcange(a)redhat.com> > > Cc: Andrew Morton <akpm(a)linux-foundation.org> > > Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> > > Cc: Zi Yan <zi.yan(a)cs.rutgers.edu> > > Cc: Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> > > Cc: "H. Peter Anvin" <hpa(a)zytor.com> > > Cc: Anshuman Khandual <khandual(a)linux.vnet.ibm.com> > > Cc: Dave Hansen <dave.hansen(a)intel.com> > > Cc: David Nellans <dnellans(a)nvidia.com> > > Cc: Ingo Molnar <mingo(a)elte.hu> > > Cc: Mel Gorman <mgorman(a)techsingularity.net> > > Cc: Minchan Kim <minchan(a)kernel.org> > > Cc: Naoya Horiguchi <n-horiguchi(a)ah.jp.nec.com> > > Cc: Thomas Gleixner <tglx(a)linutronix.de> > > Cc: Vlastimil Babka <vbabka(a)suse.cz> > > Cc: Michal Hocko <mhocko(a)kernel.org> > > Cc: Andrea Arcangeli <aarcange(a)redhat.com> > > Is this worth backporting to stable trees? Yes it is i forgot to cc stable :( > > The patch looks good to me > Acked-by: Michal Hocko <mhocko(a)suse.com> > > > --- > > mm/huge_memory.c | 7 +------ > > 1 file changed, 1 insertion(+), 6 deletions(-) > > > > diff --git a/mm/huge_memory.c b/mm/huge_memory.c > > index 533f9b00147d..93cb80fe12cb 100644 > > --- a/mm/huge_memory.c > > +++ b/mm/huge_memory.c > > @@ -2885,9 +2885,6 @@ void set_pmd_migration_entry(struct page_vma_mapped_walk *pvmw, > > if (!(pvmw->pmd && !pvmw->pte)) > > return; > > > > - mmu_notifier_invalidate_range_start(mm, address, > > - address + HPAGE_PMD_SIZE); > > - > > flush_cache_range(vma, address, address + HPAGE_PMD_SIZE); > > pmdval = *pvmw->pmd; > > pmdp_invalidate(vma, address, pvmw->pmd); > > @@ -2898,11 +2895,9 @@ void set_pmd_migration_entry(struct page_vma_mapped_walk *pvmw, > > if (pmd_soft_dirty(pmdval)) > > pmdswp = pmd_swp_mksoft_dirty(pmdswp); > > set_pmd_at(mm, address, pvmw->pmd, pmdswp); > > + mmu_notifier_invalidate_range(mm, address, address + HPAGE_PMD_SIZE); > > page_remove_rmap(page, true); > > put_page(page); > > - > > - mmu_notifier_invalidate_range_end(mm, address, > > - address + HPAGE_PMD_SIZE); > > } > > > > void remove_migration_pmd(struct page_vma_mapped_walk *pvmw, struct page *new) > > -- > > 2.17.2 > > -- > Michal Hocko > SUSE Labs

7 years

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Applied "ASoC: sta32x: set ->component pointer in private struct" to the asoc tree

by Mark Brown

The patch ASoC: sta32x: set ->component pointer in private struct has been applied to the asoc tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark >From 747df19747bc9752cd40b9cce761e17a033aa5c2 Mon Sep 17 00:00:00 2001 From: Daniel Mack <daniel(a)zonque.org> Date: Thu, 11 Oct 2018 20:32:05 +0200 Subject: [PATCH] ASoC: sta32x: set ->component pointer in private struct The ESD watchdog code in sta32x_watchdog() dereferences the pointer which is never assigned. This is a regression from a1be4cead9b950 ("ASoC: sta32x: Convert to direct regmap API usage.") which went unnoticed since nobody seems to use that ESD workaround. Fixes: a1be4cead9b950 ("ASoC: sta32x: Convert to direct regmap API usage.") Signed-off-by: Daniel Mack <daniel(a)zonque.org> Signed-off-by: Mark Brown <broonie(a)kernel.org> Cc: stable(a)vger.kernel.org --- sound/soc/codecs/sta32x.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/soc/codecs/sta32x.c b/sound/soc/codecs/sta32x.c index d5035f2f2b2b..ce508b4cc85c 100644 --- a/sound/soc/codecs/sta32x.c +++ b/sound/soc/codecs/sta32x.c @@ -879,6 +879,9 @@ static int sta32x_probe(struct snd_soc_component *component) struct sta32x_priv *sta32x = snd_soc_component_get_drvdata(component); struct sta32x_platform_data *pdata = sta32x->pdata; int i, ret = 0, thermal = 0; + + sta32x->component = component; + ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies); if (ret != 0) { -- 2.19.0

7 years

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[PATCH 4.18 00/44] 4.18.14-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.18.14 release. There are 44 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Sat Oct 13 15:24:36 UTC 2018. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.18.14-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.18.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.18.14-rc1 Zhi Chen <zhichen(a)codeaurora.org> ath10k: fix scan crash due to incorrect length calculation Ka-Cheong Poon <ka-cheong.poon(a)oracle.com> rds: rds_ib_recv_alloc_cache() should call alloc_percpu_gfp() instead Richard Weinberger <richard(a)nod.at> ubifs: Check for name being NULL while mounting Cong Wang <xiyou.wangcong(a)gmail.com> ucma: fix a use-after-free in ucma_resolve_ip() Cong Wang <xiyou.wangcong(a)gmail.com> tipc: call start and done ops directly in __tipc_nl_compat_dumpit() Chao Yu <yuchao0(a)huawei.com> f2fs: fix invalid memory access Vineet Gupta <vgupta(a)synopsys.com> ARC: clone syscall to setp r25 as thread pointer Christophe Leroy <christophe.leroy(a)c-s.fr> powerpc/lib: fix book3s/32 boot failure due to code patching Michael Neuling <mikey(a)neuling.org> powerpc: Avoid code patching freed init sections Guenter Roeck <linux(a)roeck-us.net> of: unittest: Disable interrupt node tests for old world MAC systems Dmitry Safonov <dima(a)arista.com> tty: Drop tty->count on tty_reopen() failure Romain Izard <romain.izard.pro(a)gmail.com> usb: cdc_acm: Do not leak URB buffers Johan Hovold <johan(a)kernel.org> USB: serial: option: add two-endpoints device-id flag Kristian Evensen <kristian.evensen(a)gmail.com> USB: serial: option: improve Quectel EP06 detection Johan Hovold <johan(a)kernel.org> USB: serial: simple: add Motorola Tetra MTP6550 id Chunfeng Yun <chunfeng.yun(a)mediatek.com> usb: xhci-mtk: resume USB3 roothub first Mathias Nyman <mathias.nyman(a)linux.intel.com> xhci: Add missing CAS workaround for Intel Sunrise Point xHCI Mike Snitzer <snitzer(a)redhat.com> dm cache: fix resize crash if user doesn't reload cache table Joe Thornber <ejt(a)redhat.com> dm cache metadata: ignore hints array being too small during resize Mike Snitzer <snitzer(a)redhat.com> dm mpath: fix attached_handler_name leak and dangling hw_handler_name pointer Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> PM / core: Clear the direct_complete flag on errors Felix Fietkau <nbd(a)nbd.name> mac80211: fix setting IEEE80211_KEY_FLAG_RX_MGMT for AP mode keys Daniel Drake <drake(a)endlessm.com> PCI: Reprogram bridge prefetch registers on resume Andy Lutomirski <luto(a)kernel.org> x86/vdso: Fix vDSO syscall fallback asm constraint regression Andy Lutomirski <luto(a)kernel.org> x86/vdso: Only enable vDSO retpolines when enabled and supported Andy Lutomirski <luto(a)kernel.org> selftests/x86: Add clock_gettime() tests to test_vdso Andy Lutomirski <luto(a)kernel.org> x86/vdso: Fix asm constraints on vDSO syscall fallbacks Jann Horn <jannh(a)google.com> drm: fix use-after-free read in drm_mode_create_lease_ioctl() Jason Ekstrand <jason(a)jlekstrand.net> drm/syncobj: Don't leak fences when WAIT_FOR_SUBMIT is set Rex Zhu <Rex.Zhu(a)amd.com> drm/amdgpu: Fix vce work queue was not cancelled when suspend Felix Fietkau <nbd(a)nbd.name> mac80211: allocate TXQs for active monitor interfaces Marek Szyprowski <m.szyprowski(a)samsung.com> mmc: slot-gpio: Fix debounce time to use miliseconds again Tony Lindgren <tony(a)atomide.com> mmc: core: Fix debounce time to use microseconds Jan Beulich <JBeulich(a)suse.com> xen-netback: fix input validation in xenvif_set_hash_mapping() Tomi Valkeinen <tomi.valkeinen(a)ti.com> fbdev/omapfb: fix omapfb_memory_read infoleak Alexandre Belloni <alexandre.belloni(a)bootlin.com> clocksource/drivers/timer-atmel-pit: Properly handle error cases Kees Cook <keescook(a)chromium.org> pstore/ram: Fix failure-path memory leak in ramoops_init Ilya Dryomov <idryomov(a)gmail.com> blk-mq: I/O and timer unplugs are inverted in blktrace Sean Christopherson <sean.j.christopherson(a)intel.com> KVM: VMX: check for existence of secondary exec controls before accessing Sean Christopherson <sean.j.christopherson(a)intel.com> KVM: x86: fix L1TF's MMIO GFN calculation Jann Horn <jannh(a)google.com> mm/vmstat.c: skip NR_TLB_REMOTE_FLUSH* properly Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> mm, thp: fix mlocking THP page with migration enabled Mike Kravetz <mike.kravetz(a)oracle.com> mm: migration: fix migration of huge PMD shared pages Reinette Chatre <reinette.chatre(a)intel.com> perf/core: Add sanity check to deal with pinned event failure ------------- Diffstat: Makefile | 4 +- arch/arc/kernel/process.c | 20 +++ arch/powerpc/include/asm/setup.h | 1 + arch/powerpc/lib/code-patching.c | 14 +- arch/powerpc/mm/mem.c | 2 + arch/x86/entry/vdso/Makefile | 16 ++- arch/x86/entry/vdso/vclock_gettime.c | 26 ++-- arch/x86/kvm/mmu.c | 24 +++- arch/x86/kvm/vmx.c | 7 +- block/blk-mq.c | 4 +- drivers/base/power/main.c | 5 +- drivers/clocksource/timer-atmel-pit.c | 20 ++- drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c | 3 +- drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 4 +- drivers/gpu/drm/drm_lease.c | 6 +- drivers/gpu/drm/drm_syncobj.c | 5 + drivers/infiniband/core/ucma.c | 2 + drivers/md/dm-cache-metadata.c | 4 +- drivers/md/dm-cache-target.c | 9 +- drivers/md/dm-mpath.c | 14 +- drivers/mmc/core/host.c | 2 +- drivers/mmc/core/slot-gpio.c | 2 +- drivers/net/wireless/ath/ath10k/wmi-tlv.c | 8 +- drivers/net/xen-netback/hash.c | 12 +- drivers/of/unittest.c | 26 ++-- drivers/pci/pci.c | 27 ++-- drivers/tty/tty_io.c | 11 +- drivers/usb/class/cdc-acm.c | 6 + drivers/usb/host/xhci-mtk.c | 4 +- drivers/usb/host/xhci-pci.c | 2 + drivers/usb/serial/option.c | 15 ++- drivers/usb/serial/usb-serial-simple.c | 3 +- drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c | 5 +- fs/f2fs/checkpoint.c | 9 +- fs/pstore/ram.c | 29 +++- fs/ubifs/super.c | 3 + include/linux/hugetlb.h | 14 ++ include/linux/mm.h | 6 + kernel/events/core.c | 6 + mm/huge_memory.c | 2 +- mm/hugetlb.c | 37 ++++- mm/migrate.c | 3 + mm/rmap.c | 42 +++++- mm/vmstat.c | 3 + net/mac80211/cfg.c | 2 +- net/mac80211/iface.c | 3 +- net/rds/ib.h | 2 +- net/rds/ib_cm.c | 2 +- net/rds/ib_recv.c | 10 +- net/tipc/netlink_compat.c | 2 + net/tipc/socket.c | 17 ++- net/tipc/socket.h | 1 + tools/testing/selftests/x86/test_vdso.c | 172 ++++++++++++++++++++++++ 53 files changed, 563 insertions(+), 115 deletions(-)

7 years

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[PATCH] afs: Fix afs_server struct leak

by David Howells

Fix a leak of afs_server structs. The routine that installs them in the various lookup lists and trees gets a ref on leaving the function, whether it added the server or a server already exists. It shouldn't increment the refcount if it added the server. The effect of this that "rmmod kafs" will hang waiting for the leaked server to become unused. Fixes: d2ddc776a458 ("afs: Overhaul volume and server record caching and fileserver rotation") Signed-off-by: David Howells <dhowells(a)redhat.com> --- fs/afs/server.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/afs/server.c b/fs/afs/server.c index 1d329e6981d5..2f306c0cc4ee 100644 --- a/fs/afs/server.c +++ b/fs/afs/server.c @@ -199,9 +199,11 @@ static struct afs_server *afs_install_server(struct afs_net *net, write_sequnlock(&net->fs_addr_lock); ret = 0; + goto out; exists: afs_get_server(server); +out: write_sequnlock(&net->fs_lock); return server; }

7 years

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[PATCH 4.9 0/4] Fix softirq time accounting issues on 4.9

by Ivan Delalande

Hi Greg, This series fixes issues we've seen with softirq time accounting in 4.9: - when ksoftirqd is running at 100% on a CPU, none of the values reported by /proc/stat for that CPU will change, sometimes for dozens of seconds, - large deviations in the total number of ticks accumulated over a fixed time for a CPU, probably because of the first issue hitting for shorter periods. We found out that something pretty similar had been reported 9 months ago, see the reference link below. In that discussion, Rabin Vincent had made a 4.9 specific patch which fixes our first issue, but we were still seeing some deviation from the total number of ticks (up to 1.7% from expected, where we had only 0.2% on older kernels), and you had also asked for a direct backport from the mainline series, if possible. As mentioned in that thread, a lot of changes (probably 50+) went into 4.11 to remove cputime, but we could get something working with only the 4 attached patches to fix these two issues. Three of these patches apply without change, and the second one in the series ("sched/cputime: Convert kcpustat to nsecs") needed a minor change as a cast had been added in 527b0a76f41d ("sched/cpuacct: Avoid %lld seq_printf warning") to fix a build warning on s390. I guess we could also include that patch in this series, let me know if this is the preferred way to handle this. We ran our tests on 3.18, 4.4 and 4.9 and confirmed that only 4.9 would need this series, and that this series indeed restores the behavior we were seeing on those older kernels. Thanks! Reference: http://lkml.kernel.org/r/%3C1513159876-5125-1-git-send-email-rabin.vincent@… Frederic Weisbecker (4): time: Introduce jiffies64_to_nsecs() sched/cputime: Convert kcpustat to nsecs sched/cputime: Increment kcpustat directly on irqtime account sched/cputime: Fix ksoftirqd cputime accounting regression arch/s390/appldata/appldata_os.c | 16 +++---- drivers/cpufreq/cpufreq.c | 6 +-- drivers/cpufreq/cpufreq_governor.c | 2 +- drivers/cpufreq/cpufreq_stats.c | 1 - drivers/macintosh/rack-meter.c | 2 +- fs/proc/stat.c | 68 +++++++++++++-------------- fs/proc/uptime.c | 7 +-- include/linux/jiffies.h | 2 + kernel/sched/cpuacct.c | 2 +- kernel/sched/cputime.c | 75 +++++++++++++----------------- kernel/sched/sched.h | 12 +++-- kernel/time/time.c | 10 ++++ kernel/time/timeconst.bc | 6 +++ 13 files changed, 109 insertions(+), 100 deletions(-) -- 2.18.0

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[PATCH] drm/i915: Large page offsets for pread/pwrite

by Chris Wilson

Handle integer overflow when computing the sub-page length for shmem backed pread/pwrite. Reported-by: Tvrtko Ursulin <tvrtko.ursulin(a)intel.com> Signed-off-by: Chris Wilson <chris(a)chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin(a)intel.com> Cc: stable(a)vger.kernel.org --- drivers/gpu/drm/i915/i915_gem.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 7d45e71100bc..93d09282710d 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1127,11 +1127,7 @@ i915_gem_shmem_pread(struct drm_i915_gem_object *obj, offset = offset_in_page(args->offset); for (idx = args->offset >> PAGE_SHIFT; remain; idx++) { struct page *page = i915_gem_object_get_page(obj, idx); - int length; - - length = remain; - if (offset + length > PAGE_SIZE) - length = PAGE_SIZE - offset; + unsigned int length = min_t(u64, remain, PAGE_SIZE - offset); ret = shmem_pread(page, offset, length, user_data, page_to_phys(page) & obj_do_bit17_swizzling, @@ -1575,11 +1571,7 @@ i915_gem_shmem_pwrite(struct drm_i915_gem_object *obj, offset = offset_in_page(args->offset); for (idx = args->offset >> PAGE_SHIFT; remain; idx++) { struct page *page = i915_gem_object_get_page(obj, idx); - int length; - - length = remain; - if (offset + length > PAGE_SIZE) - length = PAGE_SIZE - offset; + unsigned int length = min_t(u64, remain, PAGE_SIZE - offset); ret = shmem_pwrite(page, offset, length, user_data, page_to_phys(page) & obj_do_bit17_swizzling, -- 2.19.1

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[GIT PULL] commits for Linux 3.18

by Sasha Levin

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hi Greg, Pleae pull commits for Linux 3.18 . I've sent a review request for all commits over a week ago and all comments were addressed. Thanks, Sasha ===== The following changes since commit 921b2fed6a79439ef1609ef4af0ada5cccb3555c: Linux 3.18.123 (2018-09-26 08:33:59 +0200) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git tags/for-greg-3.18-12102018 for you to fetch changes up to a2d2ae775f75f02d321a460304a08bd54ba5035c: ubifs: Check for name being NULL while mounting (2018-09-30 09:20:38 -0400) - ---------------------------------------------------------------- for-greg-3.18-12102018 - ---------------------------------------------------------------- Andy Whitcroft (1): floppy: Do not copy a kernel pointer to user memory in FDGETPRM ioctl Colin Ian King (1): net: hp100: fix always-true check for link up state Jongsung Kim (1): stmmac: fix valid numbers of unicast filter entries Lei Yang (1): selftests/efivarfs: add required kernel configs Richard Weinberger (1): ubifs: Check for name being NULL while mounting Tony Lindgren (1): mfd: omap-usb-host: Fix dts probe of children drivers/block/floppy.c | 3 +++ drivers/mfd/omap-usb-host.c | 11 ++++++----- drivers/net/ethernet/hp/hp100.c | 2 +- drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 5 ++--- fs/ubifs/super.c | 3 +++ tools/testing/selftests/efivarfs/config | 1 + 6 files changed, 16 insertions(+), 9 deletions(-) create mode 100644 tools/testing/selftests/efivarfs/config -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE4n5dijQDou9mhzu83qZv95d3LNwFAlvAsXMACgkQ3qZv95d3 LNxOlQ//ZAaryjy7Ag365v91Oil+S+khKLagLFG76rWWsI5i2ANRM9ZJa4acr56u T4sbqPEZMsIVY5c6xhq6ZwvHVk1nxesihbfGh30KNvsRh+WtIvhmozYPXX7F3X9K PpUBFVomZHl5b3K58R1cF/NFOJwcMo7Mj1oDf0ojYXhtNmwhPaosqnfjOpzBZ3By 3Zqf41srQfbVMuHe5G58gVh3hsKqqrTzvCZRjPk1OyuFeLv0t5dCtXkIjDbskeii sQEyqcykplD05g1sZjkt9YaSvVH9Pn7B9oTIML1Bbyl/gbCitRMAPeoX3sJUUCWA 3nbzNSOCyFHPjmoGIrBth8gFeo68lsbHPRgh2KeWMLBYoQDuPADnCnioFuvEEdg0 m0sr0V3X+RAf2dq5fmLwG24FbTqb227tU73R8uf/bmtD9QbgEdJwZ5pxFAWOqKvX unaQAwIUiACMoajzK/46sfdTMZUeZy8aHxgwPuhoIL7JGxhdAJ4/qjEysykxrVr0 vw/IPvFAklDCMnSQfBuLvbzPwE5uXpBetc3A1rUE4OLAWGxa5ofYBEYSkWcZIp6S vloi8jWVkb7oqTLcM8YoUN3WlMJxSOVKJbcr53H4E/3nF77a6X+7igxf99ah35II NtkqIxrE4PPbj2616Azb6manOJHyTLzRt7bRh/mod7+6U9URNAM= =hSsg -----END PGP SIGNATURE-----

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Linux-stable-mirror October 2018