1. 17 May, 2022 3 commits
    • John David Anglin's avatar
      parisc: Fix patch code locking and flushing · 798082be
      John David Anglin authored
      This change fixes the following:
      
      1) The flags variable is not initialized. Always use raw_spin_lock_irqsave
      and raw_spin_unlock_irqrestore to serialize patching.
      
      2) flush_kernel_vmap_range is primarily intended for DMA flushes.
      The whole cache flush in flush_kernel_vmap_range is only possible
      when interrupts are enabled on SMP machines. Since __patch_text_multiple
      calls flush_kernel_vmap_range with interrupts disabled, it is better
      to directly call flush_kernel_dcache_range_asm and
      flush_kernel_icache_range_asm.
      
      3) The final call to flush_icache_range is unnecessary.
      
      Tested with `[PATCH, V3] parisc: Rewrite cache flush code for
      PA8800/PA8900' change on rp3440, c8000 and c3750 (32 and 64-bit).
      
      Note by Helge:
      This patch had been temporarily reverted shortly before v5.18-rc6 in order
      to fix boot issues. Now it can be re-applied.
      Signed-off-by: default avatarJohn David Anglin <dave.anglin@bell.net>
      Signed-off-by: default avatarHelge Deller <deller@gmx.de>
      798082be
    • John David Anglin's avatar
      parisc: Rewrite cache flush code for PA8800/PA8900 · 2de8b4cc
      John David Anglin authored
      Originally, I was convinced that we needed to use tmpalias flushes
      everwhere, for both user and kernel flushes. However, when I modified
      flush_kernel_dcache_page_addr, to use a tmpalias flush, my c8000
      would crash quite early when booting.
      
      The PDC returns alias values of 0 for the icache and dcache. This
      indicates that either the alias boundary is greater than 16MB or
      equivalent aliasing doesn't work. I modified the tmpalias code to
      make it easy to try alternate boundaries. I tried boundaries up to
      128MB but still kernel tmpalias flushes didn't work on c8000.
      
      This led me to conclude that tmpalias flushes don't work on PA8800
      and PA8900 machines, and that we needed to flush directly using the
      virtual address of user and kernel pages. This is likely the major
      cause of instability on the c8000 and rp34xx machines.
      
      Flushing user pages requires doing a temporary context switch as we
      have to flush pages that don't belong to the current context. Further,
      we have to deal with pages that aren't present. If a page isn't
      present, the flush instructions fault on every line.
      
      Other code has been rearranged and simplified based on testing. For
      example, I introduced a flush_cache_dup_mm routine. flush_cache_mm
      and flush_cache_dup_mm differ in that flush_cache_mm calls
      purge_cache_pages and flush_cache_dup_mm calls flush_cache_pages.
      In some implementations, pdc is more efficient than fdc. Based on
      my testing, I don't believe there's any performance benefit on the
      c8000.
      Signed-off-by: default avatarJohn David Anglin <dave.anglin@bell.net>
      Signed-off-by: default avatarHelge Deller <deller@gmx.de>
      2de8b4cc
    • John David Anglin's avatar
      parisc: Disable debug code regarding cache flushes in handle_nadtlb_fault() · 67c35a3b
      John David Anglin authored
      Change the "BUG" to "WARNING" and disable the message because it triggers
      occasionally in spite of the check in flush_cache_page_if_present.
      
      The pte value extracted for the "from" page in copy_user_highpage is racy and
      occasionally the pte is cleared before the flush is complete.  I assume that
      the page is simultaneously flushed by flush_cache_mm before the pte is cleared
      as nullifying the fdc doesn't seem to cause problems.
      
      I investigated various locking scenarios but I wasn't able to find a way to
      sequence the flushes.  This code is called for every COW break and locks impact
      performance.
      
      This patch is related to the bigger cache flush patch because we need the pte
      on PA8800/PA8900 to flush using the vma context.
      I have also seen this from copy_to_user_page and copy_from_user_page.
      
      The messages appear infrequently when enabled.
      Signed-off-by: default avatarJohn David Anglin <dave.anglin@bell.net>
      Signed-off-by: default avatarHelge Deller <deller@gmx.de>
      67c35a3b
  2. 16 May, 2022 1 commit
  3. 15 May, 2022 8 commits
    • Linus Torvalds's avatar
      Merge tag 'driver-core-5.18-rc7' of... · 0cdd776e
      Linus Torvalds authored
      Merge tag 'driver-core-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
      
      Pull driver core fixes from Greg KH:
       "Here is one fix, and three documentation updates for 5.18-rc7.
      
        The fix is for the firmware loader which resolves a long-reported
        problem where the credentials of the firmware loader could be set to a
        userspace process without enough permissions to actually load the
        firmware image. Many Android vendors have been reporting this for
        quite some time.
      
        The documentation updates are for the embargoed-hardware-issues.rst
        file to add a new entry, change an existing one, and sort the list to
        make changes easier in the future.
      
        All of these have been in linux-next for a while with no reported
        issues"
      
      * tag 'driver-core-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
        Documentation/process: Update ARM contact for embargoed hardware issues
        Documentation/process: Add embargoed HW contact for Ampere Computing
        Documentation/process: Make groups alphabetical and use tabs consistently
        firmware_loader: use kernel credentials when reading firmware
      0cdd776e
    • Linus Torvalds's avatar
      Merge tag 'char-misc-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · 5becde60
      Linus Torvalds authored
      Pull char/misc driver fixes from Greg KH:
       "Here are two small driver fixes for 5.18-rc7 that resolve reported
        problems:
      
         - slimbus driver irq bugfix
      
         - interconnect sync state bugfix
      
        Both of these have been in linux-next with no reported problems"
      
      * tag 'char-misc-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
        slimbus: qcom: Fix IRQ check in qcom_slim_probe
        interconnect: Restore sync state by ignoring ipa-virt in provider count
      5becde60
    • Linus Torvalds's avatar
      Merge tag 'tty-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty · 6811a466
      Linus Torvalds authored
      Pull tty/serial driver fixes from Greg KH:
       "Here are some small tty n_gsm and serial driver fixes for 5.18-rc7
        that resolve reported problems. They include:
      
         - n_gsm fixes for reported issues
      
         - 8250_mtk driver fixes for some platforms
      
         - fsl_lpuart driver fix for reported problem.
      
         - digicolor driver fix for reported problem.
      
        All have been in linux-next for a while with no reported problems"
      
      * tag 'tty-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
        fsl_lpuart: Don't enable interrupts too early
        tty: n_gsm: fix invalid gsmtty_write_room() result
        tty: n_gsm: fix mux activation issues in gsm_config()
        tty: n_gsm: fix buffer over-read in gsm_dlci_data()
        serial: 8250_mtk: Fix register address for XON/XOFF character
        serial: 8250_mtk: Make sure to select the right FEATURE_SEL
        serial: 8250_mtk: Fix UART_EFR register address
        tty/serial: digicolor: fix possible null-ptr-deref in digicolor_uart_probe()
      6811a466
    • Linus Torvalds's avatar
      Merge tag 'usb-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · fc49583c
      Linus Torvalds authored
      Pull USB fixes from Greg KH:
       "Here are some small fixes for reported issues with some USB drivers.
        They include:
      
         - xhci fixes for xhci-mtk platform driver
      
         - typec driver fixes for reported problems.
      
         - cdc-wdm read-stuck fix
      
         - gadget driver fix for reported race condition
      
         - new usb-serial driver ids
      
        All of these have been in linux-next with no reported problems"
      
      * tag 'usb-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
        usb: xhci-mtk: remove bandwidth budget table
        usb: xhci-mtk: fix fs isoc's transfer error
        usb: gadget: fix race when gadget driver register via ioctl
        usb: typec: tcpci_mt6360: Update for BMC PHY setting
        usb: gadget: uvc: allow for application to cleanly shutdown
        usb: typec: tcpci: Don't skip cleanup in .remove() on error
        usb: cdc-wdm: fix reading stuck on device close
        USB: serial: qcserial: add support for Sierra Wireless EM7590
        USB: serial: option: add Fibocom MA510 modem
        USB: serial: option: add Fibocom L610 modem
        USB: serial: pl2303: add device id for HP LM930 Display
      fc49583c
    • Linus Torvalds's avatar
      Merge tag 'powerpc-5.18-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · bc403203
      Linus Torvalds authored
      Pull powerpc fix from Michael Ellerman:
      
       - Fix KVM PR on 32-bit, which was broken by some MMU code refactoring.
      
      Thanks to: Alexander Graf, and Matt Evans.
      
      * tag 'powerpc-5.18-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        KVM: PPC: Book3S PR: Enable MSR_DR for switch_mmu_context()
      bc403203
    • Linus Torvalds's avatar
      Merge tag 'x86-urgent-2022-05-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 79dc4fc2
      Linus Torvalds authored
      Pull x86 fix from Thomas Gleixner:
       "A single fix for the handling of unpopulated sub-pmd spaces.
      
        The copy & pasta from the corresponding s390 code screwed up the
        address calculation for marking the sub-pmd ranges via memset by
        omitting the ALIGN_DOWN() to calculate the proper start address.
      
        It's a mystery why this code is not generic and shared because there
        is nothing architecture specific in there, but that's too intrusive
        for a backportable fix"
      
      * tag 'x86-urgent-2022-05-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/mm: Fix marking of unused sub-pmd ranges
      79dc4fc2
    • Linus Torvalds's avatar
      Merge tag 'sched-urgent-2022-05-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 990e798d
      Linus Torvalds authored
      Pull scheduler fix from Thomas Gleixner:
       "The recent expansion of the sched switch tracepoint inserted a new
        argument in the middle of the arguments. This reordering broke BPF
        programs which relied on the old argument list.
      
        While tracepoints are not considered stable ABI, it's not trivial to
        make BPF cope with such a change, but it's being worked on. For now
        restore the original argument order and move the new argument to the
        end of the argument list"
      
      * tag 'sched-urgent-2022-05-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        sched/tracing: Append prev_state to tp args instead
      990e798d
    • Linus Torvalds's avatar
      Merge tag 'irq-urgent-2022-05-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · fb756280
      Linus Torvalds authored
      Pull irq fix from Thomas Gleixner:
       "A single fix for a recent (introduced in 5.16) regression in the core
        interrupt code.
      
        The consolidation of the interrupt handler invocation code added an
        unconditional warning when generic_handle_domain_irq() is invoked from
        outside hard interrupt context. That's overbroad as the requirement
        for invoking these handlers in hard interrupt context is only required
        for certain interrupt types. The subsequently called code already
        contains a warning which triggers conditionally for interrupt chips
        which indicate this requirement in their properties.
      
        Remove the overbroad one"
      
      * tag 'irq-urgent-2022-05-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        genirq: Remove WARN_ON_ONCE() in generic_handle_domain_irq()
      fb756280
  4. 14 May, 2022 1 commit
  5. 13 May, 2022 25 commits
  6. 12 May, 2022 2 commits
    • Dave Airlie's avatar
      Merge tag 'drm-intel-fixes-2022-05-12' of... · c8f0c2d4
      Dave Airlie authored
      Merge tag 'drm-intel-fixes-2022-05-12' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
      
      Fix for #5732: (Cc stable) kernel memory corruption when running a lot of OpenCL tests in parallel
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/YnykW6L4e7vD3yl3@jlahtine-mobl.ger.corp.intel.com
      c8f0c2d4
    • Linus Torvalds's avatar
      Merge tag 'net-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net · f3f19f93
      Linus Torvalds authored
      Pull networking fixes from Jakub Kicinski:
       "Including fixes from wireless, and bluetooth.
      
        No outstanding fires.
      
        Current release - regressions:
      
         - eth: atlantic: always deep reset on pm op, fix null-deref
      
        Current release - new code bugs:
      
         - rds: use maybe_get_net() when acquiring refcount on TCP sockets
           [refinement of a previous fix]
      
         - eth: ocelot: mark traps with a bool instead of guessing type based
           on list membership
      
        Previous releases - regressions:
      
         - net: fix skipping features in for_each_netdev_feature()
      
         - phy: micrel: fix null-derefs on suspend/resume and probe
      
         - bcmgenet: check for Wake-on-LAN interrupt probe deferral
      
        Previous releases - always broken:
      
         - ipv4: drop dst in multicast routing path, prevent leaks
      
         - ping: fix address binding wrt vrf
      
         - net: fix wrong network header length when BPF protocol translation
           is used on skbs with a fraglist
      
         - bluetooth: fix the creation of hdev->name
      
         - rfkill: uapi: fix RFKILL_IOCTL_MAX_SIZE ioctl request definition
      
         - wifi: iwlwifi: iwl-dbg: use del_timer_sync() before freeing
      
         - wifi: ath11k: reduce the wait time of 11d scan and hw scan while
           adding an interface
      
         - mac80211: fix rx reordering with non explicit / psmp ack policy
      
         - mac80211: reset MBSSID parameters upon connection
      
         - nl80211: fix races in nl80211_set_tx_bitrate_mask()
      
         - tls: fix context leak on tls_device_down
      
         - sched: act_pedit: really ensure the skb is writable
      
         - batman-adv: don't skb_split skbuffs with frag_list
      
         - eth: ocelot: fix various issues with TC actions (null-deref; bad
           stats; ineffective drops; ineffective filter removal)"
      
      * tag 'net-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (61 commits)
        tls: Fix context leak on tls_device_down
        net: sfc: ef10: fix memory leak in efx_ef10_mtd_probe()
        net/smc: non blocking recvmsg() return -EAGAIN when no data and signal_pending
        net: dsa: bcm_sf2: Fix Wake-on-LAN with mac_link_down()
        mlxsw: Avoid warning during ip6gre device removal
        net: bcmgenet: Check for Wake-on-LAN interrupt probe deferral
        net: ethernet: mediatek: ppe: fix wrong size passed to memset()
        Bluetooth: Fix the creation of hdev->name
        i40e: i40e_main: fix a missing check on list iterator
        net/sched: act_pedit: really ensure the skb is writable
        s390/lcs: fix variable dereferenced before check
        s390/ctcm: fix potential memory leak
        s390/ctcm: fix variable dereferenced before check
        net: atlantic: verify hw_head_ lies within TX buffer ring
        net: atlantic: add check for MAX_SKB_FRAGS
        net: atlantic: reduce scope of is_rsc_complete
        net: atlantic: fix "frag[0] not initialized"
        net: stmmac: fix missing pci_disable_device() on error in stmmac_pci_probe()
        net: phy: micrel: Fix incorrect variable type in micrel
        decnet: Use container_of() for struct dn_neigh casts
        ...
      f3f19f93