1. 10 Aug, 2017 1 commit
  2. 09 Aug, 2017 14 commits
    • Linus Torvalds's avatar
      Merge tag 'pinctrl-v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl · 8d31f80e
      Linus Torvalds authored
      Pull pin control fixes from Linus Walleij:
       "These are the pin control fixes I have gathered since the return from
        my vacation. They boiled in -next a while so let's get them in.
      
        Apart from the documentation build it is purely driver fixes. Which is
        nice. The Intel fixes seem kind of important.
      
         - Fix the documentation build as the docs were moved
      
         - Correct the UART pin list on the Intel Merrifield
      
         - Fix pin assignment and number of pins on the Marvell Armada 37xx
           pin controller
      
         - Cover the Setzer models in the Chromebook DMI quirk in the Intel
           cheryview driver so they start working
      
         - Add the missing "sim" function to the sunxi driver
      
         - Fix USB pin definitions on Uniphier Pro4
      
         - Smatch fix for invalid reference in the zx pin control driver"
      
      * tag 'pinctrl-v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
        pinctrl: generic: update references to Documentation/pinctrl.txt
        pinctrl: intel: merrifield: Correct UART pin lists
        pinctrl: armada-37xx: Fix number of pin in south bridge
        pinctrl: armada-37xx: Fix the pin 23 on south bridge
        pinctrl: cherryview: Add Setzer models to the Chromebook DMI quirk
        pinctrl: sunxi: add a missing function of A10/A20 pinctrl driver
        pinctrl: uniphier: fix USB3 pin assignment for Pro4
        pinctrl: zte: fix dereference of 'data' in zx_set_mux()
      8d31f80e
    • Mel Gorman's avatar
      futex: Remove unnecessary warning from get_futex_key · 48fb6f4d
      Mel Gorman authored
      Commit 65d8fc77 ("futex: Remove requirement for lock_page() in
      get_futex_key()") removed an unnecessary lock_page() with the
      side-effect that page->mapping needed to be treated very carefully.
      
      Two defensive warnings were added in case any assumption was missed and
      the first warning assumed a correct application would not alter a
      mapping backing a futex key.  Since merging, it has not triggered for
      any unexpected case but Mark Rutland reported the following bug
      triggering due to the first warning.
      
        kernel BUG at kernel/futex.c:679!
        Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
        Modules linked in:
        CPU: 0 PID: 3695 Comm: syz-executor1 Not tainted 4.13.0-rc3-00020-g307fec773ba3 #3
      
      
        Hardware name: linux,dummy-virt (DT)
        task: ffff80001e271780 task.stack: ffff000010908000
        PC is at get_futex_key+0x6a4/0xcf0 kernel/futex.c:679
        LR is at get_futex_key+0x6a4/0xcf0 kernel/futex.c:679
        pc : [<ffff00000821ac14>] lr : [<ffff00000821ac14>] pstate: 80000145
      
      The fact that it's a bug instead of a warning was due to an unrelated
      arm64 problem, but the warning itself triggered because the underlying
      mapping changed.
      
      This is an application issue but from a kernel perspective it's a
      recoverable situation and the warning is unnecessary so this patch
      removes the warning.  The warning may potentially be triggered with the
      following test program from Mark although it may be necessary to adjust
      NR_FUTEX_THREADS to be a value smaller than the number of CPUs in the
      system.
      
          #include <linux/futex.h>
          #include <pthread.h>
          #include <stdio.h>
          #include <stdlib.h>
          #include <sys/mman.h>
          #include <sys/syscall.h>
          #include <sys/time.h>
          #include <unistd.h>
      
          #define NR_FUTEX_THREADS 16
          pthread_t threads[NR_FUTEX_THREADS];
      
          void *mem;
      
          #define MEM_PROT  (PROT_READ | PROT_WRITE)
          #define MEM_SIZE  65536
      
          static int futex_wrapper(int *uaddr, int op, int val,
                                   const struct timespec *timeout,
                                   int *uaddr2, int val3)
          {
              syscall(SYS_futex, uaddr, op, val, timeout, uaddr2, val3);
          }
      
          void *poll_futex(void *unused)
          {
              for (;;) {
                  futex_wrapper(mem, FUTEX_CMP_REQUEUE_PI, 1, NULL, mem + 4, 1);
              }
          }
      
          int main(int argc, char *argv[])
          {
              int i;
      
              mem = mmap(NULL, MEM_SIZE, MEM_PROT,
                     MAP_SHARED | MAP_ANONYMOUS, -1, 0);
      
              printf("Mapping @ %p\n", mem);
      
              printf("Creating futex threads...\n");
      
              for (i = 0; i < NR_FUTEX_THREADS; i++)
                  pthread_create(&threads[i], NULL, poll_futex, NULL);
      
              printf("Flipping mapping...\n");
              for (;;) {
                  mmap(mem, MEM_SIZE, MEM_PROT,
                       MAP_FIXED | MAP_SHARED | MAP_ANONYMOUS, -1, 0);
              }
      
              return 0;
          }
      Reported-and-tested-by: default avatarMark Rutland <mark.rutland@arm.com>
      Signed-off-by: default avatarMel Gorman <mgorman@suse.de>
      Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: stable@vger.kernel.org # 4.7+
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      48fb6f4d
    • Linus Torvalds's avatar
      Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux · 358f8c26
      Linus Torvalds authored
      Pull i2c fixes from Wolfram Sang:
       "The main thing is to allow empty id_tables for ACPI to make some
        drivers get probed again. It looks a bit bigger than usual because it
        needs some internal renaming, too.
      
        Other than that, there is a fix for broken DSTDs, a super simple
        enablement for ARM MPS, and two documentation fixes which I'd like to
        see in v4.13 already"
      
      * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
        i2c: rephrase explanation of I2C_CLASS_DEPRECATED
        i2c: allow i2c-versatile for ARM MPS platforms
        i2c: designware: Some broken DSTDs use 1MiHz instead of 1MHz
        i2c: designware: Print clock freq on invalid clock freq error
        i2c: core: Allow empty id_table in ACPI case as well
        i2c: mux: pinctrl: mention correct module name in Kconfig help text
      358f8c26
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.dk/linux-block · 31cf92f3
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "Three patches that should go into this release.
      
        Two of them are from Paolo and fix up some corner cases with BFQ, and
        the last patch is from Ming and fixes up a potential usage count
        imbalance regression due to the recent NOWAIT work"
      
      * 'for-linus' of git://git.kernel.dk/linux-block:
        blk-mq: don't leak preempt counter/q_usage_counter when allocating rq failed
        block, bfq: consider also in_service_entity to state whether an entity is active
        block, bfq: reset in_service_entity if it becomes idle
      31cf92f3
    • Linus Torvalds's avatar
      Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 · d555eb6b
      Linus Torvalds authored
      Pull crypto fixes from Herbert Xu:
       "Fix two regressions in the inside-secure driver with respect to
        hmac(sha1)"
      
      * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
        crypto: inside-secure - fix the sha state length in hmac_sha1_setkey
        crypto: inside-secure - fix invalidation check in hmac_sha1_setkey
      d555eb6b
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 4530cca1
      Linus Torvalds authored
      Pull networking fixes from David Miller:
       "The pull requests are getting smaller, that's progress I suppose :-)
      
         1) Fix infinite loop in CIPSO option parsing, from Yujuan Qi.
      
         2) Fix remote checksum handling in VXLAN and GUE tunneling drivers,
            from Koichiro Den.
      
         3) Missing u64_stats_init() calls in several drivers, from Florian
            Fainelli.
      
         4) TCP can set the congestion window to an invalid ssthresh value
            after congestion window reductions, from Yuchung Cheng.
      
         5) Fix BPF jit branch generation on s390, from Daniel Borkmann.
      
         6) Correct MIPS ebpf JIT merge, from David Daney.
      
         7) Correct byte order test in BPF test_verifier.c, from Daniel
            Borkmann.
      
         8) Fix various crashes and leaks in ASIX driver, from Dean Jenkins.
      
         9) Handle SCTP checksums properly in mlx4 driver, from Davide
            Caratti.
      
        10) We can potentially enter tcp_connect() with a cached route
            already, due to fastopen, so we have to explicitly invalidate it.
      
        11) skb_warn_bad_offload() can bark in legitimate situations, fix from
            Willem de Bruijn"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (52 commits)
        net: avoid skb_warn_bad_offload false positives on UFO
        qmi_wwan: fix NULL deref on disconnect
        ppp: fix xmit recursion detection on ppp channels
        rds: Reintroduce statistics counting
        tcp: fastopen: tcp_connect() must refresh the route
        net: sched: set xt_tgchk_param par.net properly in ipt_init_target
        net: dsa: mediatek: add adjust link support for user ports
        net/mlx4_en: don't set CHECKSUM_COMPLETE on SCTP packets
        qed: Fix a memory allocation failure test in 'qed_mcp_cmd_init()'
        hysdn: fix to a race condition in put_log_buffer
        s390/qeth: fix L3 next-hop in xmit qeth hdr
        asix: Fix small memory leak in ax88772_unbind()
        asix: Ensure asix_rx_fixup_info members are all reset
        asix: Add rx->ax_skb = NULL after usbnet_skb_return()
        bpf: fix selftest/bpf/test_pkt_md_access on s390x
        netvsc: fix race on sub channel creation
        bpf: fix byte order test in test_verifier
        xgene: Always get clk source, but ignore if it's missing for SGMII ports
        MIPS: Add missing file for eBPF JIT.
        bpf, s390: fix build for libbpf and selftest suite
        ...
      4530cca1
    • Willem de Bruijn's avatar
      net: avoid skb_warn_bad_offload false positives on UFO · 8d63bee6
      Willem de Bruijn authored
      skb_warn_bad_offload triggers a warning when an skb enters the GSO
      stack at __skb_gso_segment that does not have CHECKSUM_PARTIAL
      checksum offload set.
      
      Commit b2504a5d ("net: reduce skb_warn_bad_offload() noise")
      observed that SKB_GSO_DODGY producers can trigger the check and
      that passing those packets through the GSO handlers will fix it
      up. But, the software UFO handler will set ip_summed to
      CHECKSUM_NONE.
      
      When __skb_gso_segment is called from the receive path, this
      triggers the warning again.
      
      Make UFO set CHECKSUM_UNNECESSARY instead of CHECKSUM_NONE. On
      Tx these two are equivalent. On Rx, this better matches the
      skb state (checksum computed), as CHECKSUM_NONE here means no
      checksum computed.
      
      See also this thread for context:
      http://patchwork.ozlabs.org/patch/799015/
      
      Fixes: b2504a5d
      
       ("net: reduce skb_warn_bad_offload() noise")
      Signed-off-by: default avatarWillem de Bruijn <willemb@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8d63bee6
    • Bjørn Mork's avatar
      qmi_wwan: fix NULL deref on disconnect · bbae08e5
      Bjørn Mork authored
      qmi_wwan_disconnect is called twice when disconnecting devices with
      separate control and data interfaces.  The first invocation will set
      the interface data to NULL for both interfaces to flag that the
      disconnect has been handled.  But the matching NULL check was left
      out when qmi_wwan_disconnect was added, resulting in this oops:
      
        usb 2-1.4: USB disconnect, device number 4
        qmi_wwan 2-1.4:1.6 wwp0s29u1u4i6: unregister 'qmi_wwan' usb-0000:00:1d.0-1.4, WWAN/QMI device
        BUG: unable to handle kernel NULL pointer dereference at 00000000000000e0
        IP: qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan]
        PGD 0
        P4D 0
        Oops: 0000 [#1] SMP
        Modules linked in: <stripped irrelevant module list>
        CPU: 2 PID: 33 Comm: kworker/2:1 Tainted: G            E   4.12.3-nr44-normandy-r1500619820+ #1
      
      
        Hardware name: LENOVO 4291LR7/4291LR7, BIOS CBET4000 4.6-810-g50522254fb 07/21/2017
        Workqueue: usb_hub_wq hub_event [usbcore]
        task: ffff8c882b716040 task.stack: ffffb8e800d84000
        RIP: 0010:qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan]
        RSP: 0018:ffffb8e800d87b38 EFLAGS: 00010246
        RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
        RDX: 0000000000000001 RSI: ffff8c8824f3f1d0 RDI: ffff8c8824ef6400
        RBP: ffff8c8824ef6400 R08: 0000000000000000 R09: 0000000000000000
        R10: ffffb8e800d87780 R11: 0000000000000011 R12: ffffffffc07ea0e8
        R13: ffff8c8824e2e000 R14: ffff8c8824e2e098 R15: 0000000000000000
        FS:  0000000000000000(0000) GS:ffff8c8835300000(0000) knlGS:0000000000000000
        CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
        CR2: 00000000000000e0 CR3: 0000000229ca5000 CR4: 00000000000406e0
        Call Trace:
         ? usb_unbind_interface+0x71/0x270 [usbcore]
         ? device_release_driver_internal+0x154/0x210
         ? qmi_wwan_unbind+0x6d/0xc0 [qmi_wwan]
         ? usbnet_disconnect+0x6c/0xf0 [usbnet]
         ? qmi_wwan_disconnect+0x87/0xc0 [qmi_wwan]
         ? usb_unbind_interface+0x71/0x270 [usbcore]
         ? device_release_driver_internal+0x154/0x210
      Reported-and-tested-by: default avatarNathaniel Roach <nroach44@gmail.com>
      Fixes: c6adf779
      
       ("net: usb: qmi_wwan: add qmap mux protocol support")
      Cc: Daniele Palmas <dnlplm@gmail.com>
      Signed-off-by: Bjørn Mork's avatarBjørn Mork <bjorn@mork.no>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      bbae08e5
    • Guillaume Nault's avatar
      ppp: fix xmit recursion detection on ppp channels · 0a0e1a85
      Guillaume Nault authored
      Commit e5dadc65 ("ppp: Fix false xmit recursion detect with two ppp
      devices") dropped the xmit_recursion counter incrementation in
      ppp_channel_push() and relied on ppp_xmit_process() for this task.
      But __ppp_channel_push() can also send packets directly (using the
      .start_xmit() channel callback), in which case the xmit_recursion
      counter isn't incremented anymore. If such packets get routed back to
      the parent ppp unit, ppp_xmit_process() won't notice the recursion and
      will call ppp_channel_push() on the same channel, effectively creating
      the deadlock situation that the xmit_recursion mechanism was supposed
      to prevent.
      
      This patch re-introduces the xmit_recursion counter incrementation in
      ppp_channel_push(). Since the xmit_recursion variable is now part of
      the parent ppp unit, incrementation is skipped if the channel doesn't
      have any. This is fine because only packets routed through the parent
      unit may enter the channel recursively.
      
      Finally, we have to ensure that pch->ppp is not going to be modified
      while executing ppp_channel_push(). Instead of taking this lock only
      while calling ppp_xmit_process(), we now have to hold it for the full
      ppp_channel_push() execution. This respects the ppp locks ordering
      which requires locking ->upl before ->downl.
      
      Fixes: e5dadc65
      
       ("ppp: Fix false xmit recursion detect with two ppp devices")
      Signed-off-by: default avatarGuillaume Nault <g.nault@alphalink.fr>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0a0e1a85
    • Håkon Bugge's avatar
      rds: Reintroduce statistics counting · 05bfd7db
      Håkon Bugge authored
      In commit 7e3f2952 ("rds: don't let RDS shutdown a connection
      while senders are present"), refilling the receive queue was removed
      from rds_ib_recv(), along with the increment of
      s_ib_rx_refill_from_thread.
      
      Commit 73ce4317
      
       ("RDS: make sure we post recv buffers")
      re-introduces filling the receive queue from rds_ib_recv(), but does
      not add the statistics counter. rds_ib_recv() was later renamed to
      rds_ib_recv_path().
      
      This commit reintroduces the statistics counting of
      s_ib_rx_refill_from_thread and s_ib_rx_refill_from_cq.
      Signed-off-by: default avatarHåkon Bugge <haakon.bugge@oracle.com>
      Reviewed-by: default avatarKnut Omang <knut.omang@oracle.com>
      Reviewed-by: default avatarWei Lin Guay <wei.lin.guay@oracle.com>
      Reviewed-by: default avatarShamir Rabinovitch <shamir.rabinovitch@oracle.com>
      Acked-by: default avatarSantosh Shilimkar <santosh.shilimkar@oracle.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      05bfd7db
    • Eric Dumazet's avatar
      tcp: fastopen: tcp_connect() must refresh the route · 8ba60924
      Eric Dumazet authored
      With new TCP_FASTOPEN_CONNECT socket option, there is a possibility
      to call tcp_connect() while socket sk_dst_cache is either NULL
      or invalid.
      
       +0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 4
       +0 fcntl(4, F_SETFL, O_RDWR|O_NONBLOCK) = 0
       +0 setsockopt(4, SOL_TCP, TCP_FASTOPEN_CONNECT, [1], 4) = 0
       +0 connect(4, ..., ...) = 0
      
      << sk->sk_dst_cache becomes obsolete, or even set to NULL >>
      
       +1 sendto(4, ..., 1000, MSG_FASTOPEN, ..., ...) = 1000
      
      We need to refresh the route otherwise bad things can happen,
      especially when syzkaller is running on the host :/
      
      Fixes: 19f6d3f3
      
       ("net/tcp-fastopen: Add new API support")
      Reported-by: default avatarDmitry Vyukov <dvyukov@google.com>
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Cc: Wei Wang <weiwan@google.com>
      Cc: Yuchung Cheng <ycheng@google.com>
      Acked-by: default avatarWei Wang <weiwan@google.com>
      Acked-by: default avatarYuchung Cheng <ycheng@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8ba60924
    • Xin Long's avatar
      net: sched: set xt_tgchk_param par.net properly in ipt_init_target · ec0acb09
      Xin Long authored
      Now xt_tgchk_param par in ipt_init_target is a local varibale,
      par.net is not initialized there. Later when xt_check_target
      calls target's checkentry in which it may access par.net, it
      would cause kernel panic.
      
      Jaroslav found this panic when running:
      
        # ip link add TestIface type dummy
        # tc qd add dev TestIface ingress handle ffff:
        # tc filter add dev TestIface parent ffff: u32 match u32 0 0 \
          action xt -j CONNMARK --set-mark 4
      
      This patch is to pass net param into ipt_init_target and set
      par.net with it properly in there.
      
      v1->v2:
        As Wang Cong pointed, I missed ipt_net_id != xt_net_id, so fix
        it by also passing net_id to __tcf_ipt_init.
      v2->v3:
        Missed the fixes tag, so add it.
      
      Fixes: ecb2421b
      
       ("netfilter: add and use nf_ct_netns_get/put")
      Reported-by: default avatarJaroslav Aster <jaster@redhat.com>
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ec0acb09
    • John Crispin's avatar
      net: dsa: mediatek: add adjust link support for user ports · 8e6f1521
      John Crispin authored
      
      
      Manually adjust the port settings of user ports once PHY polling has
      completed. This patch extends the adjust_link callback to configure the
      per port PMCR register, applying the proper values polled from the PHY.
      Without this patch flow control was not always getting setup properly.
      Signed-off-by: default avatarShashidhar Lakkavalli <shashidhar.lakkavalli@openmesh.com>
      Signed-off-by: default avatarMuciri Gatimu <muciri@openmesh.com>
      Signed-off-by: default avatarJohn Crispin <john@phrozen.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8e6f1521
    • Davide Caratti's avatar
      net/mlx4_en: don't set CHECKSUM_COMPLETE on SCTP packets · e718fe45
      Davide Caratti authored
      
      
      if the NIC fails to validate the checksum on TCP/UDP, and validation of IP
      checksum is successful, the driver subtracts the pseudo-header checksum
      from the value obtained by the hardware and sets CHECKSUM_COMPLETE. Don't
      do that if protocol is IPPROTO_SCTP, otherwise CRC32c validation fails.
      
      V2: don't test MLX4_CQE_STATUS_IPV6 if MLX4_CQE_STATUS_IPV4 is set
      Reported-by: default avatarShuang Li <shuali@redhat.com>
      Fixes: f8c6455b
      
       ("net/mlx4_en: Extend checksum offloading by CHECKSUM COMPLETE")
      Signed-off-by: default avatarDavide Caratti <dcaratti@redhat.com>
      Acked-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e718fe45
  3. 08 Aug, 2017 12 commits
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma · bfa738cf
      Linus Torvalds authored
      Pull rdma fixes from Doug Ledford:
       "Third set of -rc fixes for 4.13 cycle
      
         - small set of miscellanous fixes
      
         - a reasonably sizable set of IPoIB fixes that deal with multiple
           long standing issues"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
        IB/hns: checking for IS_ERR() instead of NULL
        RDMA/mlx5: Fix existence check for extended address vector
        IB/uverbs: Fix device cleanup
        RDMA/uverbs: Prevent leak of reserved field
        IB/core: Fix race condition in resolving IP to MAC
        IB/ipoib: Notify on modify QP failure only when relevant
        Revert "IB/core: Allow QP state transition from reset to error"
        IB/ipoib: Remove double pointer assigning
        IB/ipoib: Clean error paths in add port
        IB/ipoib: Add get statistics support to SRIOV VF
        IB/ipoib: Add multicast packets statistics
        IB/ipoib: Set IPOIB_NEIGH_TBL_FLUSH after flushed completion initialization
        IB/ipoib: Prevent setting negative values to max_nonsrq_conn_qp
        IB/ipoib: Make sure no in-flight joins while leaving that mcast
        IB/ipoib: Use cancel_delayed_work_sync when needed
        IB/ipoib: Fix race between light events and interface restart
      bfa738cf
    • Joe Perches's avatar
      parse-maintainers: Move matching sections from MAINTAINERS · b95c29a2
      Joe Perches authored
      
      
      Allow any number of command line arguments to match either the
      section header or the section contents and create new files.
      
      Create MAINTAINERS.new and SECTION.new.
      
      This allows scripting of the movement of various sections from
      MAINTAINERS.
      Signed-off-by: default avatarJoe Perches <joe@perches.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      b95c29a2
    • Joe Perches's avatar
      parse-maintainers: Use perl hash references and specific filenames · fe909030
      Joe Perches authored
      
      
      Instead of reading STDIN and writing STDOUT, use specific filenames of
      MAINTAINERS and MAINTAINERS.new.
      
      Use hash references instead of global hash %hash so future modifications
      can read and write specific hashes to split up MAINTAINERS into multiple
      files using a script.
      Signed-off-by: default avatarJoe Perches <joe@perches.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      fe909030
    • Joe Perches's avatar
      parse-maintainers: Add section pattern sorting · 61f74164
      Joe Perches authored
      
      
      Section [A-Z]: patterns are not currently in any required sorting order.
      Add a specific sorting sequence to MAINTAINERS entries.
      Sort F: and X: patterns in alphabetic order.
      
      The preferred section ordering is:
      
        SECTION HEADER
        M:	Maintainers
        R:	Reviewers
        P:	Named persons without email addresses
        L:	Mailing list addresses
        S:	Status of this section (Supported, Maintained, Orphan, etc...)
        W:	Any relevant URLs
        T:	Source code control type (git, quilt, etc)
        Q:	Patchwork patch acceptance queue site
        B:	Bug tracking URIs
        C:	Chat URIs
        F:	Files with wildcard patterns (alphabetic ordered)
        X:	Excluded files with wildcard patterns (alphabetic ordered)
        N:	Files with regex patterns
        K:	Keyword regexes in source code for maintainership identification
      
      Miscellaneous perl neatening:
      
       - Rename %map to %hash, map has a different meaning in perl
       - Avoid using \& and local variables for function indirection
       - Use return for a little c like clarity
       - Use c-like function call style instead of &function
      Signed-off-by: default avatarJoe Perches <joe@perches.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      61f74164
    • Joe Perches's avatar
      get_maintainer: Prepare for separate MAINTAINERS files · 6f7d98ec
      Joe Perches authored
      
      
      Allow for MAINTAINERS to become a directory and if it is,
      read all the files in the directory for maintained sections.
      
      Optionally look for all files named MAINTAINERS in directories
      excluding the .git directory by using --find-maintainer-files.
      
      This optional feature adds ~.3 seconds of CPU on an Intel
      i5-6200 with an SSD.
      
      Miscellanea:
      
       - Create a read_maintainer_file subroutine from the existing code
       - Test only the existence of MAINTAINERS, not whether it's a file
      Signed-off-by: default avatarJoe Perches <joe@perches.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      6f7d98ec
    • Randy Dunlap's avatar
      MAINTAINERS: openbmc mailing list is moderated · 6209ef67
      Randy Dunlap authored
      
      
      The openbmc mailing list is moderated for non-subscribers.
      Signed-off-by: default avatarRandy Dunlap <rdunlap@infradead.org>
      Acked-by: default avatarBrendan Higgins <brendanhiggins@google.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Joel Stanley <joel@jms.id.au>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      6209ef67
    • Sedat Dilek's avatar
      MAINTAINERS: greybus: Fix typo s/LOOBACK/LOOPBACK · a1ffc2d2
      Sedat Dilek authored
      Fixes: f47e07bc
      
       ("Fix up MAINTAINERS file problems")
      Cc: Joe Perches <joe@perches.com>
      Signed-off-by: default avatarSedat Dilek <sedat.dilek@gmail.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a1ffc2d2
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · de70be0a
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "Two small fixes, one re-fix of a previous fix and five patches sorting
        out hotplug in the bnx2X class of drivers. The latter is rather
        involved, but necessary because these drivers have started dropping
        lockdep recursion warnings on the hotplug lock because of its
        conversion to a percpu rwsem"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: sg: only check for dxfer_len greater than 256M
        scsi: aacraid: reading out of bounds
        scsi: qedf: Limit number of CQs
        scsi: bnx2i: Simplify cpu hotplug code
        scsi: bnx2fc: Simplify CPU hotplug code
        scsi: bnx2i: Prevent recursive cpuhotplug locking
        scsi: bnx2fc: Prevent recursive cpuhotplug locking
        scsi: bnx2fc: Plug CPU hotplug race
      de70be0a
    • Helge Deller's avatar
      random: fix warning message on ia64 and parisc · 51d96dc2
      Helge Deller authored
      
      
      Fix the warning message on the parisc and IA64 architectures to show the
      correct function name of the caller by using %pS instead of %pF. The
      message is printed with the value of _RET_IP_ which calls
      __builtin_return_address(0) and as such returns the IP address caller
      instead of pointer to a function descriptor of the caller.
      
      The effect of this patch is visible on the parisc and ia64 architectures
      only since those are the ones which use function descriptors while on
      all others %pS and %pF will behave the same.
      
      Cc: Theodore Ts'o <tytso@mit.edu>
      Cc: Jason A. Donenfeld <Jason@zx2c4.com>
      Signed-off-by: default avatarHelge Deller <deller@gmx.de>
      Fixes: eecabf56 ("random: suppress spammy warnings about unseeded randomness")
      Fixes: d06bfd19
      
       ("random: warn when kernel uses unseeded randomness")
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      51d96dc2
    • Linus Torvalds's avatar
      Merge tag 'xtensa-20170807' of git://github.com/jcmvbkbc/linux-xtensa · 623ce345
      Linus Torvalds authored
      Pull Xtensa fixes from Max Filippov:
      
       - use asm-generic instances of asm/param.h and asm/device.h instead of
         exact copies in arch/xtensa/include/asm;
      
       - fix build error for xtensa cores with aliasing WT cache: define cache
         flushing functions and copy_{to,from}_user_page;
      
       - add missing EXPORT_SYMBOLs for clear_user_highpage, copy_user_highpage,
         flush_dcache_page, local_flush_cache_range, local_flush_cache_page,
         csum_partial and csum_partial_copy_generic.
      
      * tag 'xtensa-20170807' of git://github.com/jcmvbkbc/linux-xtensa:
        xtensa: mm/cache: add missing EXPORT_SYMBOLs
        xtensa: don't limit csum_partial export by CONFIG_NET
        xtensa: fix cache aliasing handling code for WT cache
        xtensa: remove wrapper header for asm/param.h
        xtensa: remove wrapper header for asm/device.h
      623ce345
    • Linus Torvalds's avatar
      Merge tag 'for-linus-20170807' of git://git.infradead.org/linux-mtd · d16b9d22
      Linus Torvalds authored
      Pull MTD fixes from Brian Norris:
       "I missed getting these out for rc4, but here are some MTD fixes.
      
        Just NAND fixes (in both the core handling, and a few drivers). Notes
        stolen from Boris:
      
        Core fixes:
      
         - fix data interface setup for ONFI NANDs that do not support the SET
           FEATURES command
      
         - fix a kernel doc header
      
         - fix potential integer overflow when retrieving timing information
           from the parameter page
      
         - fix wrong OOB layout for small page NANDs
      
        Driver fixes:
      
         - fix potential division-by-zero bug
      
         - fix backward compat with old atmel-nand DT bindings
      
         - fix ->setup_data_interface() in the atmel NAND driver"
      
      * tag 'for-linus-20170807' of git://git.infradead.org/linux-mtd:
        mtd: nand: atmel: Fix EDO mode check
        mtd: nand: Declare tBERS, tR and tPROG as u64 to avoid integer overflow
        mtd: nand: Fix timing setup for NANDs that do not support SET FEATURES
        mtd: nand: Fix a docs build warning
        mtd: nand: sunxi: fix potential divide-by-zero error
        nand: fix wrong default oob layout for small pages using soft ecc
        mtd: nand: atmel: Fix DT backward compatibility in pmecc.c
      d16b9d22
    • Linus Torvalds's avatar
      Merge tag 'xfs-4.13-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux · 1742c0f0
      Linus Torvalds authored
      Pull xfs fixes from Darrick Wong:
       "I have a couple more bug fixes for you today:
      
         - fix memory leak when issuing discard
      
         - fix propagation of the dax inode flag"
      
      * tag 'xfs-4.13-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
        xfs: Fix per-inode DAX flag inheritance
        xfs: Fix leak of discard bio
      1742c0f0
  4. 07 Aug, 2017 13 commits
    • Christophe Jaillet's avatar
      qed: Fix a memory allocation failure test in 'qed_mcp_cmd_init()' · eb2a6b80
      Christophe Jaillet authored
      
      
      We allocate 'p_info->mfw_mb_cur' and 'p_info->mfw_mb_shadow' but we check
      'p_info->mfw_mb_addr' instead of 'p_info->mfw_mb_cur'.
      
      'p_info->mfw_mb_addr' is never 0, because it is initiliazed a few lines
      above in 'qed_load_mcp_offsets()'.
      
      Update the test and check the result of the 2 'kzalloc()' instead.
      Signed-off-by: default avatarChristophe JAILLET <christophe.jaillet@wanadoo.fr>
      Acked-by: default avatarTomer Tayar <Tomer.Tayar@cavium.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      eb2a6b80
    • Anton Volkov's avatar
      hysdn: fix to a race condition in put_log_buffer · b925ef37
      Anton Volkov authored
      
      
      The synchronization type that was used earlier to guard the loop that
      deletes unused log buffers may lead to a situation that prevents any
      thread from going through the loop.
      
      The patch deletes previously used synchronization mechanism and moves
      the loop under the spin_lock so the similar cases won't be feasible in
      the future.
      
      Found by by Linux Driver Verification project (linuxtesting.org).
      Signed-off-by: default avatarAnton Volkov <avolkov@ispras.ru>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b925ef37
    • Julian Wiedmann's avatar
      s390/qeth: fix L3 next-hop in xmit qeth hdr · ec2c6726
      Julian Wiedmann authored
      
      
      On L3, the qeth_hdr struct needs to be filled with the next-hop
      IP address.
      The current code accesses rtable->rt_gateway without checking that
      rtable is a valid address. The accidental access to a lowcore area
      results in a random next-hop address in the qeth_hdr.
      rtable (or more precisely, skb_dst(skb)) can be NULL in rare cases
      (for instance together with AF_PACKET sockets).
      This patch adds the missing NULL-ptr checks.
      Signed-off-by: default avatarJulian Wiedmann <jwi@linux.vnet.ibm.com>
      Signed-off-by: default avatarUrsula Braun <ubraun@linux.vnet.ibm.com>
      Fixes: 87e7597b
      
       qeth: Move away from using neighbour entries in qeth_l3_fill_header()
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ec2c6726
    • Doug Ledford's avatar
      Merge tag 'rdma-rc-2017-07-26' of... · 48107c4e
      Doug Ledford authored
      Merge tag 'rdma-rc-2017-07-26' of git://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma
      
       into leon-ipoib
      
      IPoIB fixes for 4.13
      
      The patchset provides various fixes for IPoIB. It is combination of
      fixes to various issues discovered during verification along with
      static checkers cleanup patches.
      
      Most of the patches are from pre-git era and hence lack of Fixes lines.
      
      There is one exception in this IPoIB group - addition of patch revert:
      Revert "IB/core: Allow QP state transition from reset to error", but
      it followed by proper fix to the annoying print, so I thought it is
      appropriate to include it.
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      48107c4e
    • David S. Miller's avatar
      Merge branch 'asix-Improve-robustness' · c0e0fb83
      David S. Miller authored
      Dean Jenkins says:
      
      ====================
      asix: Improve robustness
      
      Please consider taking these patches to improve the robustness of the ASIX USB
      to Ethernet driver.
      
      Failures prompting an ASIX driver code review
      =============================================
      
      On an ARM i.MX6 embedded platform some strange one-off and two-off failures were
      observed in and around the ASIX USB to Ethernet driver. This was observed on a
      highly modified kernel 3.14 with the ASIX driver containing back-ported changes
      from kernel.org up to kernel 4.8 approximately.
      
      a) A one-off failure in asix_rx_fixup_internal():
      
      There was an occurrence of an attempt to write off the end of the netdev buffer
      which was trapped by skb_over_panic() in skb_put().
      
      [20030.846440] skbuff: skb_over_panic: text:7f2271c0 len:120 put:60 head:8366ecc0 data:8366ed02 tail:0x8366ed7a end:0x8366ed40 dev:eth0
      [20030.863007] Kernel BUG at 8044ce38 [verbose debug info unavailable]
      
      [20031.215345] Backtrace:
      [20031.217884] [<8044cde0>] (skb_panic) from [<8044d50c>] (skb_put+0x50/0x5c)
      [20031.227408] [<8044d4bc>] (skb_put) from [<7f2271c0>] (asix_rx_fixup_internal+0x1c4/0x23c [asix])
      [20031.242024] [<7f226ffc>] (asix_rx_fixup_internal [asix]) from [<7f22724c>] (asix_rx_fixup_common+0x14/0x18 [asix])
      [20031.260309] [<7f227238>] (asix_rx_fixup_common [asix]) from [<7f21f7d4>] (usbnet_bh+0x74/0x224 [usbnet])
      [20031.269879] [<7f21f760>] (usbnet_bh [usbnet]) from [<8002f834>] (call_timer_fn+0xa4/0x1f0)
      [20031.283961] [<8002f790>] (call_timer_fn) from [<80030834>] (run_timer_softirq+0x230/0x2a8)
      [20031.302782] [<80030604>] (run_timer_softirq) from [<80028780>] (__do_softirq+0x15c/0x37c)
      [20031.321511] [<80028624>] (__do_softirq) from [<80028c38>] (irq_exit+0x8c/0xe8)
      [20031.339298] [<80028bac>] (irq_exit) from [<8000e9c8>] (handle_IRQ+0x8c/0xc8)
      [20031.350038] [<8000e93c>] (handle_IRQ) from [<800085c8>] (gic_handle_irq+0xb8/0xf8)
      [20031.365528] [<80008510>] (gic_handle_irq) from [<8050de80>] (__irq_svc+0x40/0x70)
      
      Analysis of the logic of the ASIX driver (containing backported changes from
      kernel.org up to kernel 4.8 approximately) suggested that the software could not
      trigger skb_over_panic(). The analysis of the kernel BUG() crash information
      suggested that the netdev buffer was written with 2 minimal 60 octet length
      Ethernet frames (ASIX hardware drops the 4 octet FCS field) and the 2nd Ethernet
      frame attempted to write off the end of the netdev buffer.
      
      Note that the netdev buffer should only contain 1 Ethernet frame so if an
      attempt to write 2 Ethernet frames into the buffer is made then that is wrong.
      However, the logic of the asix_rx_fixup_internal() only allows 1 Ethernet frame
      to be written into the netdev buffer.
      
      Potentially this failure was due to memory corruption because it was only seen
      once.
      
      b) Two-off failures in the NAPI layer's backlog queue:
      
      There were 2 crashes in the NAPI layer's backlog queue presumably after
      asix_rx_fixup_internal() called usbnet_skb_return().
      
      [24097.273945] Unable to handle kernel NULL pointer dereference at virtual address 00000004
      
      [24097.398944] PC is at process_backlog+0x80/0x16c
      
      [24097.569466] Backtrace:
      [24097.572007] [<8045ad98>] (process_backlog) from [<8045b64c>] (net_rx_action+0xcc/0x248)
      [24097.591631] [<8045b580>] (net_rx_action) from [<80028780>] (__do_softirq+0x15c/0x37c)
      [24097.610022] [<80028624>] (__do_softirq) from [<800289cc>] (run_ksoftirqd+0x2c/0x84)
      
      and
      
      [ 1059.828452] Unable to handle kernel NULL pointer dereference at virtual address 00000000
      
      [ 1059.953715] PC is at process_backlog+0x84/0x16c
      
      [ 1060.140896] Backtrace:
      [ 1060.143434] [<8045ad98>] (process_backlog) from [<8045b64c>] (net_rx_action+0xcc/0x248)
      [ 1060.163075] [<8045b580>] (net_rx_action) from [<80028780>] (__do_softirq+0x15c/0x37c)
      [ 1060.181474] [<80028624>] (__do_softirq) from [<80028c38>] (irq_exit+0x8c/0xe8)
      [ 1060.199256] [<80028bac>] (irq_exit) from [<8000e9c8>] (handle_IRQ+0x8c/0xc8)
      [ 1060.210006] [<8000e93c>] (handle_IRQ) from [<800085c8>] (gic_handle_irq+0xb8/0xf8)
      [ 1060.225492] [<80008510>] (gic_handle_irq) from [<8050de80>] (__irq_svc+0x40/0x70)
      
      The embedded board was only using an ASIX USB to Ethernet adaptor eth0.
      
      Analysis suggested that the doubly-linked list pointers of the backlog queue had
      been corrupted because one of the link pointers was NULL.
      
      Potentially this failure was due to memory corruption because it was only seen
      twice.
      
      Results of the ASIX driver code review
      ======================================
      
      During the code review some weaknesses were observed in the ASIX driver and the
      following patches have been created to improve the robustness.
      
      Brief overview of the patches
      -----------------------------
      
      1. asix: Add rx->ax_skb = NULL after usbnet_skb_return()
      
      The current ASIX driver sends the received Ethernet frame to the NAPI layer of
      the network stack via the call to usbnet_skb_return() in
      asix_rx_fixup_internal() but retains the rx->ax_skb pointer to the netdev
      buffer. The driver no longer needs the rx->ax_skb pointer at this point because
      the NAPI layer now has the Ethernet frame.
      
      This means that asix_rx_fixup_internal() must not use rx->ax_skb after the call
      to usbnet_skb_return() because it could corrupt the handling of the Ethernet
      frame within the network layer.
      
      Therefore, to remove the risk of erroneous usage of rx->ax_skb, set rx->ax_skb
      to NULL after the call to usbnet_skb_return(). This avoids potential erroneous
      freeing of rx->ax_skb and erroneous writing to the netdev buffer.  If the
      software now somehow inappropriately reused rx->ax_skb, then a NULL pointer
      dereference of rx->ax_skb would occur which makes investigation easier.
      
      2. asix: Ensure asix_rx_fixup_info members are all reset
      
      This patch creates reset_asix_rx_fixup_info() to allow all the
      asix_rx_fixup_info structure members to be consistently reset to initial
      conditions.
      
      Call reset_asix_rx_fixup_info() upon each detectable error condition so that the
      next URB is processed from a known state.
      
      Otherwise, there is a risk that some members of the asix_rx_fixup_info structure
      may be incorrect after an error occurred so potentially leading to a
      malfunction.
      
      3. asix: Fix small memory leak in ax88772_unbind()
      
      This patch creates asix_rx_fixup_common_free() to allow the rx->ax_skb to be
      freed when necessary.
      
      asix_rx_fixup_common_free() is called from ax88772_unbind() before the parent
      private data structure is freed.
      
      Without this patch, there is a risk of a small netdev buffer memory leak each
      time ax88772_unbind() is called during the reception of an Ethernet frame that
      spans across 2 URBs.
      
      Testing
      =======
      
      The patches have been sanity tested on a 64-bit Linux laptop running kernel
      4.13-rc2 with the 3 patches applied on top.
      
      The ASIX USB to Adaptor used for testing was (output of lsusb):
      ID 0b95:772b ASIX Electronics Corp. AX88772B
      
      Test #1
      -------
      
      The test ran a flood ping test script which slowly incremented the ICMP Echo
      Request's payload from 0 to 5000 octets. This eventually causes IPv4
      fragmentation to occur which causes Ethernet frames to be sent very close to
      each other so increases the probability that an Ethernet frame will span 2 URBs.
      The test showed that all pings were successful. The test took about 15 minutes
      to complete.
      
      Test #2
      -------
      
      A script was run on the laptop to periodically run ifdown and ifup every second
      so that the ASIX USB to Adaptor was up for 1 second and down for 1 second.
      
      From a Linux PC connected to the laptop, the following ping command was used
      ping -f -s 5000 <ip address of laptop>
      
      The large ICMP payload causes IPv4 fragmentation resulting in multiple
      Ethernet frames per original IP packet.
      
      Kernel debug within the ASIX driver was enabled to see whether any ASIX errors
      were generated. The test was run for about 24 hours and no ASIX errors were
      seen.
      
      Patches
      =======
      
      The 3 patches have been rebased off the net-next repo master branch with HEAD
      fbbeefdd
      
       net: fec: Allow reception of frames bigger than 1522 bytes
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c0e0fb83
    • Dean Jenkins's avatar
      asix: Fix small memory leak in ax88772_unbind() · d0c8f338
      Dean Jenkins authored
      
      
      When Ethernet frames span mulitple URBs, the netdev buffer memory
      pointed to by the asix_rx_fixup_info structure remains allocated
      during the time gap between the 2 executions of asix_rx_fixup_internal().
      
      This means that if ax88772_unbind() is called within this time
      gap to free the memory of the parent private data structure then
      a memory leak of the part filled netdev buffer memory will occur.
      
      Therefore, create a new function asix_rx_fixup_common_free() to
      free the memory of the netdev buffer and add a call to
      asix_rx_fixup_common_free() from inside ax88772_unbind().
      
      Consequently when an unbind occurs part way through receiving
      an Ethernet frame, the netdev buffer memory that is holding part
      of the received Ethernet frame will now be freed.
      Signed-off-by: default avatarDean Jenkins <Dean_Jenkins@mentor.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d0c8f338
    • Dean Jenkins's avatar
      asix: Ensure asix_rx_fixup_info members are all reset · 960eb4ee
      Dean Jenkins authored
      
      
      There is a risk that the members of the structure asix_rx_fixup_info
      become unsynchronised leading to the possibility of a malfunction.
      
      For example, rx->split_head was not being set to false after an
      error was detected so potentially could cause a malformed 32-bit
      Data header word to be formed.
      
      Therefore add function reset_asix_rx_fixup_info() to reset all the
      members of asix_rx_fixup_info so that future processing will start
      with known initial conditions.
      
      Also, if (skb->len != offset) becomes true then call
      reset_asix_rx_fixup_info() so that the processing of the next URB
      starts with known initial conditions. Without the call, the check
      does nothing which potentially could lead to a malfunction
      when the next URB is processed.
      
      In addition, for robustness, call reset_asix_rx_fixup_info() before
      every error path's "return 0". This ensures that the next URB is
      processed from known initial conditions.
      Signed-off-by: default avatarDean Jenkins <Dean_Jenkins@mentor.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      960eb4ee
    • Dean Jenkins's avatar
      asix: Add rx->ax_skb = NULL after usbnet_skb_return() · 22889dbb
      Dean Jenkins authored
      
      
      In asix_rx_fixup_internal() there is a risk that rx->ax_skb gets
      reused after passing the Ethernet frame into the network stack via
      usbnet_skb_return().
      
      The risks include:
      
      a) asynchronously freeing rx->ax_skb after passing the netdev buffer
         to the NAPI layer which might corrupt the backlog queue.
      
      b) erroneously reusing rx->ax_skb such as calling skb_put_data() multiple
         times which causes writing off the end of the netdev buffer.
      
      Therefore add a defensive rx->ax_skb = NULL after usbnet_skb_return()
      so that it is not possible to free rx->ax_skb or to apply
      skb_put_data() too many times.
      Signed-off-by: default avatarDean Jenkins <Dean_Jenkins@mentor.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      22889dbb
    • Thomas Richter's avatar
      bpf: fix selftest/bpf/test_pkt_md_access on s390x · f9ea3225
      Thomas Richter authored
      Commit 18f3d6be ("selftests/bpf: Add test cases to test narrower ctx field loads")
      introduced new eBPF test cases. One of them (test_pkt_md_access.c)
      fails on s390x. The BPF verifier error message is:
      
      [root@s8360046 bpf]# ./test_progs
      test_pkt_access:PASS:ipv4 349 nsec
      test_pkt_access:PASS:ipv6 212 nsec
      [....]
      libbpf: load bpf program failed: Permission denied
      libbpf: -- BEGIN DUMP LOG ---
      libbpf:
      0: (71) r2 = *(u8 *)(r1 +0)
      invalid bpf_context access off=0 size=1
      
      libbpf: -- END LOG --
      libbpf: failed to load program 'test1'
      libbpf: failed to load object './test_pkt_md_access.o'
      Summary: 29 PASSED, 1 FAILED
      [root@s8360046 bpf]#
      
      This is caused by a byte endianness issue. S390x is a big endian
      architecture.  Pointer access to the lowest byte or halfword of a
      four byte value need to add an offset.
      On little endian architectures this offset is not needed.
      
      Fix this and use the same approach as the originator used for other files
      (for example test_verifier.c) in his original commit.
      
      With this fix the test program test_progs succeeds on s390x:
      [root@s8360046 bpf]# ./test_progs
      test_pkt_access:PASS:ipv4 236 nsec
      test_pkt_access:PASS:ipv6 217 nsec
      test_xdp:PASS:ipv4 3624 nsec
      test_xdp:PASS:ipv6 1722 nsec
      test_l4lb:PASS:ipv4 926 nsec
      test_l4lb:PASS:ipv6 1322 nsec
      test_tcp_estats:PASS: 0 nsec
      test_bpf_obj_id:PASS:get-fd-by-notexist-prog-id 0 nsec
      test_bpf_obj_id:PASS:get-fd-by-notexist-map-id 0 nsec
      test_bpf_obj_id:PASS:get-prog-info(fd) 0 nsec
      test_bpf_obj_id:PASS:get-map-info(fd) 0 nsec
      test_bpf_obj_id:PASS:get-prog-info(fd) 0 nsec
      test_bpf_obj_id:PASS:get-map-info(fd) 0 nsec
      test_bpf_obj_id:PASS:get-prog-fd(next_id) 0 nsec
      test_bpf_obj_id:PASS:get-prog-info(next_id->fd) 0 nsec
      test_bpf_obj_id:PASS:get-prog-fd(next_id) 0 nsec
      test_bpf_obj_id:PASS:get-prog-info(next_id->fd) 0 nsec
      test_bpf_obj_id:PASS:check total prog id found by get_next_id 0 nsec
      test_bpf_obj_id:PASS:get-map-fd(next_id) 0 nsec
      test_bpf_obj_id:PASS:get-map-fd(next_id) 0 nsec
      test_bpf_obj_id:PASS:get-map-fd(next_id) 0 nsec
      test_bpf_obj_id:PASS:get-map-fd(next_id) 0 nsec
      test_bpf_obj_id:PASS:get-map-fd(next_id) 0 nsec
      test_bpf_obj_id:PASS:get-map-fd(next_id) 0 nsec
      test_bpf_obj_id:PASS:get-map-fd(next_id) 0 nsec
      test_bpf_obj_id:PASS:check get-map-info(next_id->fd) 0 nsec
      test_bpf_obj_id:PASS:get-map-fd(next_id) 0 nsec
      test_bpf_obj_id:PASS:check get-map-info(next_id->fd) 0 nsec
      test_bpf_obj_id:PASS:check total map id found by get_next_id 0 nsec
      test_pkt_md_access:PASS: 277 nsec
      Summary: 30 PASSED, 0 FAILED
      [root@s8360046 bpf]#
      
      Fixes: 18f3d6be
      
       ("selftests/bpf: Add test cases to test narrower ctx field loads")
      Signed-off-by: default avatarThomas Richter <tmricht@linux.vnet.ibm.com>
      Acked-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f9ea3225
    • Ludovic Desroches's avatar
      pinctrl: generic: update references to Documentation/pinctrl.txt · 0cca6c89
      Ludovic Desroches authored
      
      
      Update deprecated references to Documentation/pinctrl.txt since it has been
      moved to Documentation/driver-api/pinctl.rst.
      Signed-off-by: default avatarLudovic Desroches <ludovic.desroches@o2linux.fr>
      Fixes: 5a9b7383
      
       ("pinctrl.txt: move it to the driver-api book")
      Signed-off-by: Linus Walleij's avatarLinus Walleij <linus.walleij@linaro.org>
      0cca6c89
    • Andy Shevchenko's avatar
      pinctrl: intel: merrifield: Correct UART pin lists · 5d996132
      Andy Shevchenko authored
      UART pin lists consist GPIO numbers which is simply wrong.
      Replace it by pin numbers.
      
      Fixes: 4e80c8f5
      
       ("pinctrl: intel: Add Intel Merrifield pin controller support")
      Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
      Acked-by: Mika Westerberg's avatarMika Westerberg <mika.westerberg@linux.intel.com>
      Signed-off-by: Linus Walleij's avatarLinus Walleij <linus.walleij@linaro.org>
      5d996132
    • Gregory CLEMENT's avatar
      pinctrl: armada-37xx: Fix number of pin in south bridge · 6b67c390
      Gregory CLEMENT authored
      On the south bridge we have pin from to 29, so it gives 30 pins (and not
      29).
      
      Without this patch the kernel complain with the following traces:
      cat /sys/kernel/debug/pinctrl/d0018800.pinctrl/pingroups
      [  154.530205] armada-37xx-pinctrl d0018800.pinctrl: failed to get pin(29) name
      [  154.537567] ------------[ cut here ]------------
      [  154.542348] WARNING: CPU: 1 PID: 1347 at /home/gclement/open/kernel/marvell-mainline-linux/drivers/pinctrl/core.c:1610 pinctrl_groups_show+0x15c/0x1a0
      [  154.555918] Modules linked in:
      [  154.558890] CPU: 1 PID: 1347 Comm: cat Tainted: G        W       4.13.0-rc1-00001-g19e1b9fa219d #525
      [  154.568316] Hardware name: Marvell Armada 3720 Development Board DB-88F3720-DDR3 (DT)
      [  154.576311] task: ffff80001d32d100 task.stack: ffff80001bdc0000
      [  154.583048] PC is at pinctrl_groups_show+0x15c/0x1a0
      [  154.587816] LR is at pinctrl_groups_show+0x148/0x1a0
      [  154.592847] pc : [<ffff0000083e3adc>] lr : [<ffff0000083e3ac8>] pstate: 00000145
      [  154.600840] sp : ffff80001bdc3c80
      [  154.604255] x29: ffff80001bdc3c80 x28: 00000000f7750000
      [  154.609825] x27: ffff80001d05d198 x26: 0000000000000009
      [  154.615224] x25: ffff0000089ead20 x24: 0000000000000002
      [  154.620705] x23: ffff000008c8e1d0 x22: ffff80001be55700
      [  154.626187] x21: ffff80001d05d100 x20: 0000000000000005
      [  154.631667] x19: 0000000000000006 x18: 0000000000000010
      [  154.637238] x17: 0000000000000000 x16: ffff0000081fc4b8
      [  154.642726] x15: 0000000000000006 x14: ffff0000899e537f
      [  154.648214] x13: ffff0000099e538d x12: 206f742064656c69
      [  154.653613] x11: 6166203a6c727463 x10: 0000000005f5e0ff
      [  154.659094] x9 : ffff80001bdc38c0 x8 : 286e697020746567
      [  154.664576] x7 : ffff000008551870 x6 : 000000000000011b
      [  154.670146] x5 : 0000000000000000 x4 : 0000000000000000
      [  154.675544] x3 : 0000000000000000 x2 : 0000000000000000
      [  154.681025] x1 : ffff000008c8e1d0 x0 : ffff80001be55700
      [  154.686507] Call trace:
      [  154.688668] Exception stack(0xffff80001bdc3ab0 to 0xffff80001bdc3be0)
      [  154.695224] 3aa0:                                   0000000000000006 0001000000000000
      [  154.703310] 3ac0: ffff80001bdc3c80 ffff0000083e3adc ffff80001bdc3bb0 00000000ffffffd8
      [  154.711304] 3ae0: 4554535953425553 6f6674616c703d4d 4349564544006d72 6674616c702b3d45
      [  154.719478] 3b00: 313030643a6d726f 6e69702e30303838 ffff80006c727463 ffff0000089635d8
      [  154.727562] 3b20: ffff80001d1ca0cb ffff000008af0fa4 ffff80001bdc3b40 ffff000008c8e1dc
      [  154.735648] 3b40: ffff80001bdc3bc0 ffff000008223174 ffff80001be55700 ffff000008c8e1d0
      [  154.743731] 3b60: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
      [  154.752354] 3b80: 000000000000011b ffff000008551870 286e697020746567 ffff80001bdc38c0
      [  154.760446] 3ba0: 0000000005f5e0ff 6166203a6c727463 206f742064656c69 ffff0000099e538d
      [  154.767910] 3bc0: ffff0000899e537f 0000000000000006 ffff0000081fc4b8 0000000000000000
      [  154.776085] [<ffff0000083e3adc>] pinctrl_groups_show+0x15c/0x1a0
      [  154.782823] [<ffff000008222abc>] seq_read+0x184/0x460
      [  154.787505] [<ffff000008344120>] full_proxy_read+0x60/0xa8
      [  154.793431] [<ffff0000081f9bec>] __vfs_read+0x1c/0x110
      [  154.799001] [<ffff0000081faff4>] vfs_read+0x84/0x140
      [  154.803860] [<ffff0000081fc4fc>] SyS_read+0x44/0xa0
      [  154.808983] [<ffff000008082f30>] el0_svc_naked+0x24/0x28
      [  154.814459] ---[ end trace 4cbb00a92d616b95 ]---
      
      Cc: stable@vger.kernel.org
      Fixes: 87466ccd
      
       ("pinctrl: armada-37xx: Add pin controller support
      for Armada 37xx")
      Signed-off-by: default avatarGregory CLEMENT <gregory.clement@free-electrons.com>
      Signed-off-by: Linus Walleij's avatarLinus Walleij <linus.walleij@linaro.org>
      6b67c390
    • Gregory CLEMENT's avatar
      pinctrl: armada-37xx: Fix the pin 23 on south bridge · 9ac6e7cc
      Gregory CLEMENT authored
      Pin 23 on South bridge does not belong to the rgmii group. It belongs to
      a separate group which can have 3 functions.
      
      Due to this the fix also have to update the way the functions are
      managed. Until now each groups used NB_FUNCS(which was 2) functions. For
      the mpp23, 3 functions are available but it is the only group which needs
      it, so on the loop involving NB_FUNCS an extra test was added to handle
      only the functions added.
      
      The bug was visible with the merge of the commit 07d065ab "arm64:
      dts: marvell: armada-3720-db: Add vqmmc regulator for SD slot", the gpio
      regulator used the gpio 23, due to this the whole rgmii group was setup
      to gpio which broke the Ethernet support on the Armada 3720 DB
      board. Thanks to this patch, the UHS SD cards (which need the vqmmc)
      _and_ the Ethernet work again.
      
      Cc: stable@vger.kernel.org
      Fixes: 87466ccd
      
       ("pinctrl: armada-37xx: Add pin controller support
      for Armada 37xx")
      Signed-off-by: default avatarGregory CLEMENT <gregory.clement@free-electrons.com>
      Signed-off-by: Linus Walleij's avatarLinus Walleij <linus.walleij@linaro.org>
      9ac6e7cc