- 29 Apr, 2020 2 commits
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Vasily Averin authored
qxl_release should not be accesses after qxl_push_*_ring_release() calls: userspace driver can process submitted command quickly, move qxl_release into release_ring, generate interrupt and trigger garbage collector. It can lead to crashes in qxl driver or trigger memory corruption in some kmalloc-192 slab object Gerd Hoffmann proposes to swap the qxl_release_fence_buffer_objects() + qxl_push_{cursor,command}_ring_release() calls to close that race window. cc: stable@vger.kernel.org Fixes: f64122c1 ("drm: add new QXL driver. (v1.4)") Signed-off-by:
Vasily Averin <vvs@virtuozzo.com> Link: http://patchwork.freedesktop.org/patch/msgid/fa17b338-66ae-f299-68fe-8d32419d9071@virtuozzo.comSigned-off-by:
Gerd Hoffmann <kraxel@redhat.com>
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Vasily Averin authored
v2: removed TODO reminder Signed-off-by:
Vasily Averin <vvs@virtuozzo.com> Link: http://patchwork.freedesktop.org/patch/msgid/a4e0ae09-a73c-1c62-04ef-3f990d41bea9@virtuozzo.comSigned-off-by:
Gerd Hoffmann <kraxel@redhat.com>
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- 28 Apr, 2020 3 commits
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Vasily Averin authored
Cc: stable@vger.kernel.org Fixes: 8002db63 ("qxl: convert qxl driver to proper use for reservations") Signed-off-by:
Vasily Averin <vvs@virtuozzo.com> Link: http://patchwork.freedesktop.org/patch/msgid/2e5a13ae-9ab2-5401-aa4d-03d5f5593423@virtuozzo.comSigned-off-by:
Gerd Hoffmann <kraxel@redhat.com>
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Vasily Averin authored
ret should be changed to release allocated struct qxl_release Cc: stable@vger.kernel.org Fixes: 8002db63 ("qxl: convert qxl driver to proper use for reservations") Signed-off-by:
Vasily Averin <vvs@virtuozzo.com> Link: http://patchwork.freedesktop.org/patch/msgid/22cfd55f-07c8-95d0-a2f7-191b7153c3d4@virtuozzo.comSigned-off-by:
Gerd Hoffmann <kraxel@redhat.com>
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Gurchetan Singh authored
This can happen if userspace doesn't issue any 3D ioctls before closing the DRM fd. Fixes: 72b48ae8 ("drm/virtio: enqueue virtio_gpu_create_context after the first 3D ioctl") Signed-off-by:
Gurchetan Singh <gurchetansingh@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/20200408232938.55816-1-gurchetansingh@chromium.orgSigned-off-by:
Gerd Hoffmann <kraxel@redhat.com>
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- 27 Apr, 2020 2 commits
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Lyude Paul authored
drm_dp_mst_wait_tx_reply() returns > 1 if time elapsed in wait_event_timeout() before check_txmsg_state(mgr, txmsg) evaluated to true. However, we make the mistake of returning this time from drm_dp_send_dpcd_write() on success instead of returning the number of bytes written - causing spontaneous failures during link probing: [drm:drm_dp_send_link_address [drm_kms_helper]] *ERROR* GUID check on 10:01 failed: 3975 Yikes! So, fix this by returning the number of bytes written on success instead. Signed-off-by:
Lyude Paul <lyude@redhat.com> Fixes: cb897542 ("drm/dp_mst: Fix W=1 warnings") Cc: Benjamin Gaignard <benjamin.gaignard@st.com> Cc: Sean Paul <sean@poorly.run> Acked-by:
Alex Deucher <alexander.deucher@amd.com> Reviewed-by:
Sean Paul <sean@poorly.run> Link: https://patchwork.freedesktop.org/patch/msgid/20200424190722.775284-1-lyude@redhat.com
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Daniel Vetter authored
The uapi is the same on 32 and 64 bit, but the number isn't. Everyone who botched this please re-read: https://www.kernel.org/doc/html/v5.4-preprc-cpu/ioctl/botching-up-ioctls.html Also, the type argument for the ioctl macros is for the type the void __user *arg pointer points at, which in this case would be the variable-sized char[] of a 0 terminated string. So this was botched in more than just the usual ways. Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Chenbo Feng <fengc@google.com> Cc: Greg Hackmann <ghackmann@google.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org Cc: minchan@kernel.org Cc: surenb@google.com Cc: jenhaochen@google.com Cc: Martin Liu <liumartin@google.com> Signed-off-by:
Daniel Vetter <daniel.vetter@intel.com> Tested-by:
Martin Liu <liumartin@google.com> Reviewed-by:
Martin Liu <liumartin@google.com> Signed-off-by:
Sumit Semwal <sumit.semwal@linaro.org> [sumits: updated some checkpatch fixes, corrected author email] Link: https://patchwork.freedesktop.org/patch/msgid/20200407133002.3486387-1-daniel.vetter@ffwll.ch
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- 24 Apr, 2020 1 commit
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Ville Syrjälä authored
The DispID DTD pixel clock is documented as: "00 00 00 h → FF FF FF h | Pixel clock ÷ 10,000 0.01 → 167,772.16 Mega Pixels per Sec" Which seems to imply that we to add one to the raw value. Reality seems to agree as there are tiled displays in the wild which currently show a 10kHz difference in the pixel clock between the tiles (one tile gets its mode from the base EDID, the other from the DispID block). Cc: stable@vger.kernel.org References: https://gitlab.freedesktop.org/drm/intel/-/issues/27Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200423151743.18767-1-ville.syrjala@linux.intel.comReviewed-by:
Manasi Navare <manasi.d.navare@intel.com>
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- 20 Apr, 2020 1 commit
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Tomi Valkeinen authored
tidss uses devm_kzalloc to allocate DRM plane, encoder and crtc objects. This is not correct as the lifetime of those objects should be longer than the underlying device's. When unloading tidss module, the devm_kzalloc'ed objects have already been freed when tidss_release() is called, and the driver will accesses freed memory possibly causing a crash, a kernel WARN, or other undefined behavior, and also KASAN will give a bug. Signed-off-by:
Tomi Valkeinen <tomi.valkeinen@ti.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200415092006.26675-1-tomi.valkeinen@ti.comAcked-by:
Daniel Vetter <daniel.vetter@ffwll.ch>
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- 17 Apr, 2020 1 commit
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Mikita Lipski authored
Zero Port's PBN together with VCPI slots when releasing allocated VCPI slots. That way when disabling the connector it will not cause issues in drm_dp_mst_atomic_check verifying branch bw limit. Signed-off-by:
Mikita Lipski <mikita.lipski@amd.com> Signed-off-by:
Lyude Paul <lyude@redhat.com> Fixes: cd82d82c ("drm/dp_mst: Add branch bandwidth validation to MST atomic check") Cc: <stable@vger.kernel.org> # v5.6+ Link: https://patchwork.freedesktop.org/patch/msgid/20200407160717.27976-1-mikita.lipski@amd.com
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- 15 Apr, 2020 2 commits
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Christian König authored
We are racing to initialize sched->thread here, just always check the current thread. Signed-off-by:
Christian König <christian.koenig@amd.com> Reviewed-by:
Andrey Grodzovsky <andrey.grodzovsky@amd.com> Reviewed-by:
Kent Russell <kent.russell@amd.com> Link: https://patchwork.freedesktop.org/patch/361303/
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Markus Elfring authored
The function “platform_get_irq” can log an error already. Thus omit a redundant message for the exception handling in the calling function. This issue was detected by using the Coccinelle software. Fixes: 3f68be7d ("drm/meson: Add support for HDMI encoder and DW-HDMI bridge + PHY") Signed-off-by:
Markus Elfring <elfring@users.sourceforge.net> Reviewed-by:
Neil Armstrong <narmstrong@baylibre.com> Signed-off-by:
Neil Armstrong <narmstrong@baylibre.com> Link: https://patchwork.freedesktop.org/patch/msgid/76f24122-4d3f-7670-9f06-edb4731a0661@web.de
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- 14 Apr, 2020 5 commits
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Vasily Khoruzhick authored
Some drivers (e.g. sun4i-drm) need this info to decide whether they need to enable dithering. Currently driver reports what panel supports and if panel supports 8 we don't get dithering enabled. Hardcode BPC to 6 for now since that's the only BPC that driver supports. Fixes: 6aa19269 ("drm/bridge: Add Analogix anx6345 support") Signed-off-by:
Vasily Khoruzhick <anarsoul@gmail.com> Acked-by:
Jernej Skrabec <jernej.skrabec@siol.net> Signed-off-by:
Jernej Skrabec <jernej.skrabec@siol.net> Link: https://patchwork.freedesktop.org/patch/msgid/20200329222253.2941405-1-anarsoul@gmail.com
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Sam Ravnborg authored
Both port and ports names may be used in a panel-lvds binding port - for a single port ports - if there is more than one port in sub-nodes Fixes the following warning: advantech,idk-2121wr.example.dt.yaml: panel-lvds: 'port' is a required property advantech,idk-2121wr.yaml needs several ports, so uses a ports node. v2: - Use oneOf - makes the logic more obvious (Rob) - Added Fixes tag - Added port: true, ports:true v3: - Indent port/ports in required two spaces (Rob) Signed-off-by:
Sam Ravnborg <sam@ravnborg.org> Reviewed-by:
Rob Herring <robh@kernel.org> Cc: Rob Herring <robh@kernel.org> Fixes: 8efef33e ("dt-bindings: display: Add idk-2121wr binding") Cc: Fabrizio Castro <fabrizio.castro@bp.renesas.com> Cc: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: dri-devel@lists.freedesktop.org Link: https://patchwork.freedesktop.org/patch/msgid/20200412132139.11418-2-sam@ravnborg.org (cherry picked from commit 8089a622) Signed-off-by:
Sam Ravnborg <sam@ravnborg.org>
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Fabio Estevam authored
Commit 52120e8c ("dt-bindings: display: fix panel warnings") removed the dsi unit name, but missed to remove the 'reg' property, which causes the following 'make dt_binding_check' warning: Documentation/devicetree/bindings/display/panel/xinpeng,xpp055c272.example.dts:17.5-29.11: Warning (unit_address_vs_reg): /example-0/dsi: node has a reg or ranges property, but no unit name Fix it by removing the unneeded 'reg' property. Fixes: 52120e8c ("dt-bindings: display: fix panel warnings") Signed-off-by:
Fabio Estevam <festevam@gmail.com> Signed-off-by:
Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200328183641.11226-2-festevam@gmail.com (cherry picked from commit b1e44754) Signed-off-by:
Sam Ravnborg <sam@ravnborg.org>
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Fabio Estevam authored
Commit 52120e8c ("dt-bindings: display: fix panel warnings") removed the dsi unit name, but missed to remove the 'reg' property, which causes the following 'make dt_binding_check' warning: Documentation/devicetree/bindings/display/panel/leadtek,ltk500hd1829.example.dts:17.5-29.11: Warning (unit_address_vs_reg): /example-0/dsi: node has a reg or ranges property, but no unit name Fix it by removing the unneeded 'reg' property. Fixes: 52120e8c ("dt-bindings: display: fix panel warnings") Signed-off-by:
Fabio Estevam <festevam@gmail.com> Signed-off-by:
Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200328183641.11226-1-festevam@gmail.com (cherry picked from commit dcde9c02) Signed-off-by:
Sam Ravnborg <sam@ravnborg.org>
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Maxime Ripard authored
Start the new drm-misc-fixes cycle. Signed-off-by:
Maxime Ripard <maxime@cerno.tech>
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- 12 Apr, 2020 10 commits
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Linus Torvalds authored
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Linus Torvalds authored
This sorts the actual field names too, potentially causing even more chaos and confusion at merge time if you have edited the MAINTAINERS file. But the end result is a more consistent layout, and hopefully it's a one-time pain minimized by doing this just before the -rc1 release. This was entirely scripted: ./scripts/parse-maintainers.pl --input=MAINTAINERS --output=MAINTAINERS --order Requested-by:
Joe Perches <joe@perches.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
They are all supposed to be sorted, but people who add new entries don't always know the alphabet. Plus sometimes the entry names get edited, and people don't then re-order the entry. Let's see how painful this will be for merging purposes (the MAINTAINERS file is often edited in various different trees), but Joe claims there's relatively few patches in -next that touch this, and doing it just before -rc1 is likely the best time. Fingers crossed. This was scripted with /scripts/parse-maintainers.pl --input=MAINTAINERS --output=MAINTAINERS but then I also ended up manually upper-casing a few entry names that stood out when looking at the end result. Requested-by:
Joe Perches <joe@perches.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Thomas Gleixner: "A set of three patches to fix the fallout of the newly added split lock detection feature. It addressed the case where a KVM guest triggers a split lock #AC and KVM reinjects it into the guest which is not prepared to handle it. Add proper sanity checks which prevent the unconditional injection into the guest and handles the #AC on the host side in the same way as user space detections are handled. Depending on the detection mode it either warns and disables detection for the task or kills the task if the mode is set to fatal" * tag 'x86-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: KVM: VMX: Extend VMXs #AC interceptor to handle split lock #AC in guest KVM: x86: Emulate split-lock access as a write in emulator x86/split_lock: Provide handle_guest_split_lock()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull time(keeping) updates from Thomas Gleixner: - Fix the time_for_children symlink in /proc/$PID/ so it properly reflects that it part of the 'time' namespace - Add the missing userns limit for the allowed number of time namespaces, which was half defined but the actual array member was not added. This went unnoticed as the array has an exessive empty member at the end but introduced a user visible regression as the output was corrupted. - Prevent further silent ucount corruption by adding a BUILD_BUG_ON() to catch half updated data. * tag 'timers-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: ucount: Make sure ucounts in /proc/sys/user don't regress again time/namespace: Add max_time_namespaces ucount time/namespace: Fix time_for_children symlink
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixes/updates from Thomas Gleixner: - Deduplicate the average computations in the scheduler core and the fair class code. - Fix a raise between runtime distribution and assignement which can cause exceeding the quota by up to 70%. - Prevent negative results in the imbalanace calculation - Remove a stale warning in the workqueue code which can be triggered since the call site was moved out of preempt disabled code. It's a false positive. - Deduplicate the print macros for procfs - Add the ucmap values to the SCHED_DEBUG procfs output for completness * tag 'sched-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/debug: Add task uclamp values to SCHED_DEBUG procfs sched/debug: Factor out printing formats into common macros sched/debug: Remove redundant macro define sched/core: Remove unused rq::last_load_update_tick workqueue: Remove the warning in wq_worker_sleeping() sched/fair: Fix negative imbalance in imbalance calculation sched/fair: Fix race between runtime distribution and assignment sched/fair: Align rq->avg_idle and rq->avg_scan_cost
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Thomas Gleixner: "Three fixes/updates for perf: - Fix the perf event cgroup tracking which tries to track the cgroup even for disabled events. - Add Ice Lake server support for uncore events - Disable pagefaults when retrieving the physical address in the sampling code" * tag 'perf-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Disable page faults when getting phys address perf/x86/intel/uncore: Add Ice Lake server uncore support perf/cgroup: Correct indirection in perf_less_group_idx() perf/core: Fix event cgroup tracking
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking fixes from Thomas Gleixner: "Three small fixes/updates for the locking core code: - Plug a task struct reference leak in the percpu rswem implementation. - Document the refcount interaction with PID_MAX_LIMIT - Improve the 'invalid wait context' data dump in lockdep so it contains all information which is required to decode the problem" * tag 'locking-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/lockdep: Improve 'invalid wait context' splat locking/refcount: Document interaction with PID_MAX_LIMIT locking/percpu-rwsem: Fix a task_struct refcount
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull cifs fixes from Steve French: "Ten cifs/smb fixes: - five RDMA (smbdirect) related fixes - add experimental support for swap over SMB3 mounts - also a fix which improves performance of signed connections" * tag '5.7-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6: smb3: enable swap on SMB3 mounts smb3: change noisy error message to FYI smb3: smbdirect support can be configured by default cifs: smbd: Do not schedule work to send immediate packet on every receive cifs: smbd: Properly process errors on ib_post_send cifs: Allocate crypto structures on the fly for calculating signatures of incoming packets cifs: smbd: Update receive credits before sending and deal with credits roll back on failure before sending cifs: smbd: Check send queue size before posting a send cifs: smbd: Merge code to track pending packets cifs: ignore cached share root handle closing errors
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git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds authored
Pull NFS client bugfix from Trond Myklebust: "Fix an RCU read lock leakage in pnfs_alloc_ds_commits_list()" * tag 'nfs-for-5.7-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: pNFS: Fix RCU lock leakage
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- 11 Apr, 2020 13 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2Linus Torvalds authored
Pull nios2 updates from Ley Foon Tan: - Remove nios2-dev@lists.rocketboards.org from MAINTAINERS - remove 'resetvalue' property - rename 'altr,gpio-bank-width' -> 'altr,ngpio' - enable the common clk subsystem on Nios2 * tag 'nios2-v5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2: MAINTAINERS: Remove nios2-dev@lists.rocketboards.org arch: nios2: remove 'resetvalue' property arch: nios2: rename 'altr,gpio-bank-width' -> 'altr,ngpio' arch: nios2: Enable the common clk subsystem on Nios2
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git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull dma-mapping fixes from Christoph Hellwig: - fix an integer truncation in dma_direct_get_required_mask (Kishon Vijay Abraham) - fix the display of dma mapping types (Grygorii Strashko) * tag 'dma-mapping-5.7-1' of git://git.infradead.org/users/hch/dma-mapping: dma-debug: fix displaying of dma allocation type dma-direct: fix data truncation in dma_direct_get_required_mask()
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuildLinus Torvalds authored
Pull more Kbuild updates from Masahiro Yamada: - raise minimum supported binutils version to 2.23 - remove old CONFIG_AS_* macros that we know binutils >= 2.23 supports - move remaining CONFIG_AS_* tests to Kconfig from Makefile - enable -Wtautological-compare warnings to catch more issues - do not support GCC plugins for GCC <= 4.7 - fix various breakages of 'make xconfig' - include the linker version used for linking the kernel into LINUX_COMPILER, which is used for the banner, and also exposed to /proc/version - link lib-y objects to vmlinux forcibly when CONFIG_MODULES=y, which allows us to remove the lib-ksyms.o workaround, and to solve the last known issue of the LLVM linker - add dummy tools in scripts/dummy-tools/ to enable all compiler tests in Kconfig, which will be useful for distro maintainers - support the single switch, LLVM=1 to use Clang and all LLVM utilities instead of GCC and Binutils. - support LLVM_IAS=1 to enable the integrated assembler, which is still experimental * tag 'kbuild-v5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (36 commits) kbuild: fix comment about missing include guard detection kbuild: support LLVM=1 to switch the default tools to Clang/LLVM kbuild: replace AS=clang with LLVM_IAS=1 kbuild: add dummy toolchains to enable all cc-option etc. in Kconfig kbuild: link lib-y objects to vmlinux forcibly when CONFIG_MODULES=y MIPS: fw: arc: add __weak to prom_meminit and prom_free_prom_memory kbuild: remove -I$(srctree)/tools/include from scripts/Makefile kbuild: do not pass $(KBUILD_CFLAGS) to scripts/mkcompile_h Documentation/llvm: fix the name of llvm-size kbuild: mkcompile_h: Include $LD version in /proc/version kconfig: qconf: Fix a few alignment issues kconfig: qconf: remove some old bogus TODOs kconfig: qconf: fix support for the split view mode kconfig: qconf: fix the content of the main widget kconfig: qconf: Change title for the item window kconfig: qconf: clean deprecated warnings gcc-plugins: drop support for GCC <= 4.7 kbuild: Enable -Wtautological-compare x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2 crypto: x86 - clean up poly1305-x86_64-cryptogams.S by 'make clean' ...
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Sedat Dilek authored
I do not longer work for credativ Germany. Please, use my private email address instead. This is for the case when people want to CC me on patches sent from my old business email address. Signed-off-by:
Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Trond Myklebust authored
Another brown paper bag moment. pnfs_alloc_ds_commits_list() is leaking the RCU lock. Fixes: a9901899 ("pNFS: Add infrastructure for cleaning up per-layout commit structures") Signed-off-by:
Trond Myklebust <trond.myklebust@hammerspace.com>
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Xiaoyao Li authored
Two types of #AC can be generated in Intel CPUs: 1. legacy alignment check #AC 2. split lock #AC Reflect #AC back into the guest if the guest has legacy alignment checks enabled or if split lock detection is disabled. If the #AC is not a legacy one and split lock detection is enabled, then invoke handle_guest_split_lock() which will either warn and disable split lock detection for this task or force SIGBUS on it. [ tglx: Switch it to handle_guest_split_lock() and rename the misnamed helper function. ] Suggested-by:
Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by:
Xiaoyao Li <xiaoyao.li@intel.com> Signed-off-by:
Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Borislav Petkov <bp@suse.de> Acked-by:
Paolo Bonzini <pbonzini@redhat.com> Link: https://lkml.kernel.org/r/20200410115517.176308876@linutronix.de
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Xiaoyao Li authored
Emulate split-lock accesses as writes if split lock detection is on to avoid #AC during emulation, which will result in a panic(). This should never occur for a well-behaved guest, but a malicious guest can manipulate the TLB to trigger emulation of a locked instruction[1]. More discussion can be found at [2][3]. [1] https://lkml.kernel.org/r/8c5b11c9-58df-38e7-a514-dc12d687b198@redhat.com [2] https://lkml.kernel.org/r/20200131200134.GD18946@linux.intel.com [3] https://lkml.kernel.org/r/20200227001117.GX9940@linux.intel.comSuggested-by:
Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by:
Xiaoyao Li <xiaoyao.li@intel.com> Signed-off-by:
Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Borislav Petkov <bp@suse.de> Acked-by:
Paolo Bonzini <pbonzini@redhat.com> Link: https://lkml.kernel.org/r/20200410115517.084300242@linutronix.de
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Thomas Gleixner authored
Without at least minimal handling for split lock detection induced #AC, VMX will just run into the same problem as the VMWare hypervisor, which was reported by Kenneth. It will inject the #AC blindly into the guest whether the guest is prepared or not. Provide a function for guest mode which acts depending on the host SLD mode. If mode == sld_warn, treat it like user space, i.e. emit a warning, disable SLD and mark the task accordingly. Otherwise force SIGBUS. [ bp: Add a !CPU_SUP_INTEL stub for handle_guest_split_lock(). ] Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Borislav Petkov <bp@suse.de> Acked-by:
Paolo Bonzini <pbonzini@redhat.com> Link: https://lkml.kernel.org/r/20200410115516.978037132@linutronix.de Link: https://lkml.kernel.org/r/20200402123258.895628824@linutronix.de
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Masahiro Yamada authored
The keyword here is 'twice' to explain the trick. Signed-off-by:
Masahiro Yamada <masahiroy@kernel.org>
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Linus Torvalds authored
Merge yet more updates from Andrew Morton: - Almost all of the rest of MM (memcg, slab-generic, slab, pagealloc, gup, hugetlb, pagemap, memremap) - Various other things (hfs, ocfs2, kmod, misc, seqfile) * akpm: (34 commits) ipc/util.c: sysvipc_find_ipc() should increase position index kernel/gcov/fs.c: gcov_seq_next() should increase position index fs/seq_file.c: seq_read(): add info message about buggy .next functions drivers/dma/tegra20-apb-dma.c: fix platform_get_irq.cocci warnings change email address for Pali Rohár selftests: kmod: test disabling module autoloading selftests: kmod: fix handling test numbers above 9 docs: admin-guide: document the kernel.modprobe sysctl fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once() kmod: make request_module() return an error when autoloading is disabled mm/memremap: set caching mode for PCI P2PDMA memory to WC mm/memory_hotplug: add pgprot_t to mhp_params powerpc/mm: thread pgprot_t through create_section_mapping() x86/mm: introduce __set_memory_prot() x86/mm: thread pgprot_t through init_memory_mapping() mm/memory_hotplug: rename mhp_restrictions to mhp_params mm/memory_hotplug: drop the flags field from struct mhp_restrictions mm/special: create generic fallbacks for pte_special() and pte_mkspecial() mm/vma: introduce VM_ACCESS_FLAGS mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS ...
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git://git.lwn.net/linuxLinus Torvalds authored
Pull Documentation fixes from Jonathan Corbet: "A handful of late-arriving fixes for the documentation tree" * tag 'docs-5.7-2' of git://git.lwn.net/linux: Documentation: android: binderfs: add 'stats' mount option Documentation: driver-api/usb/writing_usb_driver.rst Updates documentation links docs: driver-api: address duplicate label warning Documentation: sysrq: fix RST formatting docs: kernel-parameters.txt: Fix broken references docs: kernel-parameters.txt: Remove nompx docs: filesystems: fix typo in qnx6.rst
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git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linuxLinus Torvalds authored
Pull orangefs updates from Mike Marshall: "A fix and two cleanups. Fix: - Christoph Hellwig noticed that some logic I added to orangefs_file_read_iter introduced a race condition, so he sent a reversion patch. I had to modify his patch since reverting at this point broke Orangefs. Cleanups: - Christoph Hellwig noticed that we were doing some unnecessary work in orangefs_flush, so he sent in a patch that removed the un-needed code. - Al Viro told me he had trouble building Orangefs. Orangefs should be easy to build, even for Al :-). I looked back at the test server build notes in orangefs.txt, just in case that's where the trouble really is, and found a couple of typos and made a couple of clarifications" * tag 'for-linus-5.7-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux: orangefs: clarify build steps for test server in orangefs.txt orangefs: don't mess with I_DIRTY_TIMES in orangefs_flush orangefs: get rid of knob code...
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git://github.com/jcmvbkbc/linux-xtensaLinus Torvalds authored
Pull xtensa updates from Max Filippov: - replace setup_irq() by request_irq() - cosmetic fixes in xtensa Kconfig and boot/Makefile * tag 'xtensa-20200410' of git://github.com/jcmvbkbc/linux-xtensa: arch/xtensa: fix grammar in Kconfig help text xtensa: remove meaningless export ccflags-y xtensa: replace setup_irq() by request_irq()
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