1. 22 Jun, 2019 5 commits
    • Roland Hii's avatar
      net: stmmac: fixed new system time seconds value calculation · a1e5388b
      Roland Hii authored
      When ADDSUB bit is set, the system time seconds field is calculated as
      the complement of the seconds part of the update value.
      
      For example, if 3.000000001 seconds need to be subtracted from the
      system time, this field is calculated as
      2^32 - 3 = 4294967296 - 3 = 0x100000000 - 3 = 0xFFFFFFFD
      
      Previously, the 0x100000000 is mistakenly written as 100000000.
      
      This is further simplified from
        sec = (0x100000000ULL - sec);
      to
        sec = -sec;
      
      Fixes: ba1ffd74 ("stmmac: fix PTP support for GMAC4")
      Signed-off-by: default avatarRoland Hii <roland.king.guan.hii@intel.com>
      Signed-off-by: default avatarOng Boon Leong <boon.leong.ong@intel.com>
      Signed-off-by: default avatarVoon Weifeng <weifeng.voon@intel.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a1e5388b
    • Takashi Iwai's avatar
      ppp: mppe: Add softdep to arc4 · aad1dcc4
      Takashi Iwai authored
      The arc4 crypto is mandatory at ppp_mppe probe time, so let's put a
      softdep line, so that the corresponding module gets prepared
      gracefully.  Without this, a simple inclusion to initrd via dracut
      failed due to the missing dependency, for example.
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      aad1dcc4
    • Petr Oros's avatar
      be2net: fix link failure after ethtool offline test · 2e5db6eb
      Petr Oros authored
      Certain cards in conjunction with certain switches need a little more
      time for link setup that results in ethtool link test failure after
      offline test. Patch adds a loop that waits for a link setup finish.
      
      Changes in v2:
      - added fixes header
      
      Fixes: 4276e47e ("be2net: Add link test to list of ethtool self tests.")
      Signed-off-by: default avatarPetr Oros <poros@redhat.com>
      Reviewed-by: default avatarIvan Vecera <ivecera@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2e5db6eb
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · c356dc4b
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Fix leak of unqueued fragments in ipv6 nf_defrag, from Guillaume
          Nault.
      
       2) Don't access the DDM interface unless the transceiver implements it
          in bnx2x, from Mauro S. M. Rodrigues.
      
       3) Don't double fetch 'len' from userspace in sock_getsockopt(), from
          JingYi Hou.
      
       4) Sign extension overflow in lio_core, from Colin Ian King.
      
       5) Various netem bug fixes wrt. corrupted packets from Jakub Kicinski.
      
       6) Fix epollout hang in hvsock, from Sunil Muthuswamy.
      
       7) Fix regression in default fib6_type, from David Ahern.
      
       8) Handle memory limits in tcp_fragment more appropriately, from Eric
          Dumazet.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (24 commits)
        tcp: refine memory limit test in tcp_fragment()
        inet: clear num_timeout reqsk_alloc()
        net: mvpp2: debugfs: Add pmap to fs dump
        ipv6: Default fib6_type to RTN_UNICAST when not set
        net: hns3: Fix inconsistent indenting
        net/af_iucv: always register net_device notifier
        net/af_iucv: build proper skbs for HiperTransport
        net/af_iucv: remove GFP_DMA restriction for HiperTransport
        net: dsa: mv88e6xxx: fix shift of FID bits in mv88e6185_g1_vtu_loadpurge()
        hvsock: fix epollout hang from race condition
        net/udp_gso: Allow TX timestamp with UDP GSO
        net: netem: fix use after free and double free with packet corruption
        net: netem: fix backlog accounting for corrupted GSO frames
        net: lio_core: fix potential sign-extension overflow on large shift
        tipc: pass tunnel dev as NULL to udp_tunnel(6)_xmit_skb
        ip6_tunnel: allow not to count pkts on tstats by passing dev as NULL
        ip_tunnel: allow not to count pkts on tstats by setting skb's dev to NULL
        tun: wake up waitqueues after IFF_UP is set
        net: remove duplicate fetch in sock_getsockopt
        tipc: fix issues with early FAILOVER_MSG from peer
        ...
      c356dc4b
    • Eric Dumazet's avatar
      tcp: refine memory limit test in tcp_fragment() · b6653b36
      Eric Dumazet authored
      tcp_fragment() might be called for skbs in the write queue.
      
      Memory limits might have been exceeded because tcp_sendmsg() only
      checks limits at full skb (64KB) boundaries.
      
      Therefore, we need to make sure tcp_fragment() wont punish applications
      that might have setup very low SO_SNDBUF values.
      
      Fixes: f070ef2a ("tcp: tcp_fragment() should apply sane memory limits")
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Reported-by: default avatarChristoph Paasch <cpaasch@apple.com>
      Tested-by: default avatarChristoph Paasch <cpaasch@apple.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b6653b36
  2. 21 Jun, 2019 18 commits
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma · 121bddf3
      Linus Torvalds authored
      Pull rdma fixes from Doug Ledford:
       "This is probably our last -rc pull request. We don't have anything
        else outstanding at the moment anyway, and with the summer months on
        us and people taking trips, I expect the next weeks leading up to the
        merge window to be pretty calm and sedate.
      
        This has two simple, no brainer fixes for the EFA driver.
      
        Then it has ten not quite so simple fixes for the hfi1 driver. The
        problem with them is that they aren't simply one liner typo fixes.
        They're still fixes, but they're more complex issues like livelock
        under heavy load where the answer was to change work queue usage and
        spinlock usage to resolve the problem, or issues with orphaned
        requests during certain types of failures like link down which
        required some more complex work to fix too. They all look like
        legitimate fixes to me, they just aren't small like I wish they were.
      
        Summary:
      
         - 2 minor EFA fixes
      
         - 10 hfi1 fixes related to scaling issues"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
        RDMA/efa: Handle mmap insertions overflow
        RDMA/efa: Fix success return value in case of error
        IB/hfi1: Handle port down properly in pio
        IB/hfi1: Handle wakeup of orphaned QPs for pio
        IB/hfi1: Wakeup QPs orphaned on wait list after flush
        IB/hfi1: Use aborts to trigger RC throttling
        IB/hfi1: Create inline to get extended headers
        IB/hfi1: Silence txreq allocation warnings
        IB/hfi1: Avoid hardlockup with flushlist_lock
        IB/hfi1: Correct tid qp rcd to match verbs context
        IB/hfi1: Close PSM sdma_progress sleep window
        IB/hfi1: Validate fault injection opcode user input
      121bddf3
    • Linus Torvalds's avatar
      Merge tag 'nfs-for-5.2-3' of git://git.linux-nfs.org/projects/anna/linux-nfs · c036f7da
      Linus Torvalds authored
      Pull more NFS client fixes from Anna Schumaker:
       "These are mostly refcounting issues that people have found recently.
        The revert fixes a suspend recovery performance issue.
      
         - SUNRPC: Fix a credential refcount leak
      
         - Revert "SUNRPC: Declare RPC timers as TIMER_DEFERRABLE"
      
         - SUNRPC: Fix xps refcount imbalance on the error path
      
         - NFS4: Only set creation opendata if O_CREAT"
      
      * tag 'nfs-for-5.2-3' of git://git.linux-nfs.org/projects/anna/linux-nfs:
        SUNRPC: Fix a credential refcount leak
        Revert "SUNRPC: Declare RPC timers as TIMER_DEFERRABLE"
        net :sunrpc :clnt :Fix xps refcount imbalance on the error path
        NFS4: Only set creation opendata if O_CREAT
      c036f7da
    • Andy Lutomirski's avatar
      x86/vdso: Prevent segfaults due to hoisted vclock reads · ff17bbe0
      Andy Lutomirski authored
      GCC 5.5.0 sometimes cleverly hoists reads of the pvclock and/or hvclock
      pages before the vclock mode checks.  This creates a path through
      vclock_gettime() in which no vclock is enabled at all (due to disabled
      TSC on old CPUs, for example) but the pvclock or hvclock page
      nevertheless read.  This will segfault on bare metal.
      
      This fixes commit 459e3a21 ("gcc-9: properly declare the
      {pv,hv}clock_page storage") in the sense that, before that commit, GCC
      didn't seem to generate the offending code.  There was nothing wrong
      with that commit per se, and -stable maintainers should backport this to
      all supported kernels regardless of whether the offending commit was
      present, since the same crash could just as easily be triggered by the
      phase of the moon.
      
      On GCC 9.1.1, this doesn't seem to affect the generated code at all, so
      I'm not too concerned about performance regressions from this fix.
      
      Cc: stable@vger.kernel.org
      Cc: x86@kernel.org
      Cc: Borislav Petkov <bp@alien8.de>
      Reported-by: default avatarDuncan Roe <duncan_roe@optusnet.com.au>
      Signed-off-by: default avatarAndy Lutomirski <luto@kernel.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      ff17bbe0
    • Trond Myklebust's avatar
      SUNRPC: Fix a credential refcount leak · 19d55046
      Trond Myklebust authored
      All callers of __rpc_clone_client() pass in a value for args->cred,
      meaning that the credential gets assigned and referenced in
      the call to rpc_new_client().
      Reported-by: default avatarIdo Schimmel <idosch@idosch.org>
      Fixes: 79caa5fa ("SUNRPC: Cache cred of process creating the rpc_client")
      Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
      Tested-by: default avatarIdo Schimmel <idosch@mellanox.com>
      Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
      19d55046
    • Anna Schumaker's avatar
      Revert "SUNRPC: Declare RPC timers as TIMER_DEFERRABLE" · 502980e8
      Anna Schumaker authored
      Jon Hunter reports:
        "I have been noticing intermittent failures with a system suspend test on
         some of our machines that have a NFS mounted root file-system. Bisecting
         this issue points to your commit 43123581 ("SUNRPC: Declare RPC
         timers as TIMER_DEFERRABLE") and reverting this on top of v5.2-rc3 does
         appear to resolve the problem.
      
         The cause of the suspend failure appears to be a long delay observed
         sometimes when resuming from suspend, and this is causing our test to
         timeout."
      
      This reverts commit 43123581.
      Reported-by: default avatarJon Hunter <jonathanh@nvidia.com>
      Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
      502980e8
    • Lin Yi's avatar
      net :sunrpc :clnt :Fix xps refcount imbalance on the error path · b9622614
      Lin Yi authored
      rpc_clnt_add_xprt take a reference to struct rpc_xprt_switch, but forget
      to release it before return, may lead to a memory leak.
      Signed-off-by: default avatarLin Yi <teroincn@163.com>
      Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
      b9622614
    • Benjamin Coddington's avatar
      NFS4: Only set creation opendata if O_CREAT · 90910519
      Benjamin Coddington authored
      We can end up in nfs4_opendata_alloc during task exit, in which case
      current->fs has already been cleaned up.  This leads to a crash in
      current_umask().
      
      Fix this by only setting creation opendata if we are actually doing an open
      with O_CREAT.  We can drop the check for NULL nfs4_open_createattrs, since
      O_CREAT will never be set for the recovery path.
      Suggested-by: default avatarTrond Myklebust <trondmy@hammerspace.com>
      Signed-off-by: default avatarBenjamin Coddington <bcodding@redhat.com>
      Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
      90910519
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm · a4c33bbb
      Linus Torvalds authored
      Pull ARM fix from Russell King:
       "Just one ARM fix this time around for Jason Donenfeld, fixing a
        problem with the VDSO generation on big endian"
      
      * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
        ARM: 8867/1: vdso: pass --be8 to linker if necessary
      a4c33bbb
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-2019-06-21' of git://anongit.freedesktop.org/drm/drm · 0728f6c3
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Just catching up on the week since back from holidays, everything
        seems quite sane.
      
        core:
         - copy_to_user fix for really legacy codepaths.
      
        vmwgfx:
         - two dma fixes
         - one virt hw interaction fix
      
        i915:
         - modesetting fix
         - gvt fix
      
        panfrost:
         - BO unmapping fix
      
        imx:
         - image converter fixes"
      
      * tag 'drm-fixes-2019-06-21' of git://anongit.freedesktop.org/drm/drm:
        drm/i915: Don't clobber M/N values during fastset check
        drm: return -EFAULT if copy_to_user() fails
        drm/panfrost: Make sure a BO is only unmapped when appropriate
        drm/i915/gvt: ignore unexpected pvinfo write
        gpu: ipu-v3: image-convert: Fix image downsize coefficients
        gpu: ipu-v3: image-convert: Fix input bytesperline for packed formats
        gpu: ipu-v3: image-convert: Fix input bytesperline width/height align
        drm/vmwgfx: fix a warning due to missing dma_parms
        drm/vmwgfx: Honor the sg list segment size limitation
        drm/vmwgfx: Use the backdoor port if the HB port is not available
      0728f6c3
    • Linus Torvalds's avatar
      Merge tag 'staging-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · db54615e
      Linus Torvalds authored
      Pull staging/IIO/counter fixes from Greg KH:
       "Here are some small driver bugfixes for some staging/iio/counter
        drivers.
      
        Staging and IIO have been lumped together for a while, as those
        subsystems cross the areas a log, and counter is used by IIO, so
        that's why they are all in one pull request here.
      
        These are small fixes for reported issues in some iio drivers, the
        erofs filesystem, and a build issue for counter code.
      
        All have been in linux-next with no reported issues"
      
      * tag 'staging-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
        staging: erofs: add requirements field in superblock
        counter/ftm-quaddec: Add missing dependencies in Kconfig
        staging: iio: adt7316: Fix build errors when GPIOLIB is not set
        iio: temperature: mlx90632 Relax the compatibility check
        iio: imu: st_lsm6dsx: fix PM support for st_lsm6dsx i2c controller
        staging:iio:ad7150: fix threshold mode config bit
      db54615e
    • Linus Torvalds's avatar
      Merge tag 'char-misc-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · b7b8a44f
      Linus Torvalds authored
      Pull char/misc driver fixes from Greg KH:
       "Here are a number of small driver fixes for 5.2-rc6
      
        Nothing major, just fixes for reported issues:
         - soundwire fixes
         - thunderbolt fixes
         - MAINTAINERS update for fpga maintainer change
         - binder bugfix
         - habanalabs 64bit pointer fix
         - documentation updates
      
        All of these have been in linux-next with no reported issues"
      
      * tag 'char-misc-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
        habanalabs: use u64_to_user_ptr() for reading user pointers
        doc: fix documentation about UIO_MEM_LOGICAL using
        MAINTAINERS / Documentation: Thorsten Scherer is the successor of Gavin Schenk
        docs: fb: Add TER16x32 to the available font names
        MAINTAINERS: fpga: hand off maintainership to Moritz
        thunderbolt: Implement CIO reset correctly for Titan Ridge
        binder: fix possible UAF when freeing buffer
        thunderbolt: Make sure device runtime resume completes before taking domain lock
        soundwire: intel: set dai min and max channels correctly
        soundwire: stream: fix bad unlock balance
        soundwire: stream: fix out of boundary access on port properties
      b7b8a44f
    • Linus Torvalds's avatar
      Merge tag 'usb-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · cf242421
      Linus Torvalds authored
      Pull USB fixes from Greg KH:
       "Here are four small USB fixes for 5.2-rc6.
      
        They include two xhci bugfixes, a chipidea fix, and a small dwc2 fix.
        Nothing major, just nice things to get resolved for reported issues.
      
        All have been in linux-next with no reported issues"
      
      * tag 'usb-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
        xhci: detect USB 3.2 capable host controllers correctly
        usb: xhci: Don't try to recover an endpoint if port is in error state.
        usb: dwc2: Use generic PHY width in params setup
        usb: chipidea: udc: workaround for endpoint conflict issue
      cf242421
    • Linus Torvalds's avatar
      Merge tag 'spdx-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx · c884d8ac
      Linus Torvalds authored
      Pull still more SPDX updates from Greg KH:
       "Another round of SPDX updates for 5.2-rc6
      
        Here is what I am guessing is going to be the last "big" SPDX update
        for 5.2. It contains all of the remaining GPLv2 and GPLv2+ updates
        that were "easy" to determine by pattern matching. The ones after this
        are going to be a bit more difficult and the people on the spdx list
        will be discussing them on a case-by-case basis now.
      
        Another 5000+ files are fixed up, so our overall totals are:
      	Files checked:            64545
      	Files with SPDX:          45529
      
        Compared to the 5.1 kernel which was:
      	Files checked:            63848
      	Files with SPDX:          22576
      
        This is a huge improvement.
      
        Also, we deleted another 20000 lines of boilerplate license crud,
        always nice to see in a diffstat"
      
      * tag 'spdx-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx: (65 commits)
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 507
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 506
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 505
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 504
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 503
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 502
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 501
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 498
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 497
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 496
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 495
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 491
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 490
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 489
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 488
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 487
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 486
        treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 485
        ...
      c884d8ac
    • Linus Torvalds's avatar
      Merge tag '5.2-rc5-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6 · 05512b0f
      Linus Torvalds authored
      Pull cifs fixes from Steve French:
       "Four small SMB3 fixes, all for stable"
      
      * tag '5.2-rc5-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
        cifs: fix GlobalMid_Lock bug in cifs_reconnect
        SMB3: retry on STATUS_INSUFFICIENT_RESOURCES instead of failing write
        cifs: add spinlock for the openFileList to cifsInodeInfo
        cifs: fix panic in smb2_reconnect
      05512b0f
    • Dave Airlie's avatar
      Merge tag 'imx-drm-fixes-2019-06-20' of git://git.pengutronix.de/git/pza/linux into drm-fixes · 5eab9cf8
      Dave Airlie authored
      drm/imx: ipu-v3 image converter fixes
      
      This series fixes input buffer alignment and downsizer configuration
      to adhere to IPU mem2mem CSC/scaler hardware restrictions in certain
      downscaling ratios.
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      
      From: Philipp Zabel <p.zabel@pengutronix.de>
      Link: https://patchwork.freedesktop.org/patch/msgid/1561040798.14349.20.camel@pengutronix.de
      5eab9cf8
    • Dave Airlie's avatar
      Merge tag 'drm-intel-fixes-2019-06-20' of... · 91cbf5d2
      Dave Airlie authored
      Merge tag 'drm-intel-fixes-2019-06-20' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
      
      drm/i915 fixes for v5.2-rc6:
      - GVT: Fix reserved PVINFO register write (Weinan)
      - Avoid clobbering M/N values in fastset fuzzy checks (Ville)
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      From: Jani Nikula <jani.nikula@intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/87pnn8sbdp.fsf@intel.com
      91cbf5d2
    • Dave Airlie's avatar
      Merge tag 'drm-misc-fixes-2019-06-19' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes · ea37e1a3
      Dave Airlie authored
      panfrost- Only unmap BO's if they're mapped (Boris)
      core- Handle buffer desc copy_to_user failure properly (Dan)
      
      Cc: Boris Brezillon <boris.brezillon@collabora.com>
      Cc: Dan Carpenter <dan.carpenter@oracle.com>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      
      From: Sean Paul <sean@poorly.run>
      Link: https://patchwork.freedesktop.org/patch/msgid/20190619192745.GA145841@art_vandelay
      ea37e1a3
    • Dave Airlie's avatar
      Merge branch 'vmwgfx-fixes-5.2' of git://people.freedesktop.org/~thomash/linux into drm-fixes · 47e3c4c9
      Dave Airlie authored
      A couple of fixes for vmwgfx. Two fixes for a DMA sg-list debug warning
      message. These are not cc'd stable since there is no evidence of actual
      breakage.
      On fix for the high-bandwidth backdoor port which is cc'd stable due to
      upcoming hardware, on which the code would otherwise break.
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      From: Thomas Hellstrom <VMware> <thomas@shipmail.org>
      Link: https://patchwork.freedesktop.org/patch/msgid/20190618072255.2720-1-thomas@shipmail.org
      47e3c4c9
  3. 20 Jun, 2019 15 commits
  4. 19 Jun, 2019 2 commits
    • Eric Dumazet's avatar
      inet: clear num_timeout reqsk_alloc() · 85f9aa75
      Eric Dumazet authored
      KMSAN caught uninit-value in tcp_create_openreq_child() [1]
      This is caused by a recent change, combined by the fact
      that TCP cleared num_timeout, num_retrans and sk fields only
      when a request socket was about to be queued.
      
      Under syncookie mode, a temporary request socket is used,
      and req->num_timeout could contain garbage.
      
      Lets clear these three fields sooner, there is really no
      point trying to defer this and risk other bugs.
      
      [1]
      
      BUG: KMSAN: uninit-value in tcp_create_openreq_child+0x157f/0x1cc0 net/ipv4/tcp_minisocks.c:526
      CPU: 1 PID: 13357 Comm: syz-executor591 Not tainted 5.2.0-rc4+ #3
      Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
      Call Trace:
       <IRQ>
       __dump_stack lib/dump_stack.c:77 [inline]
       dump_stack+0x191/0x1f0 lib/dump_stack.c:113
       kmsan_report+0x162/0x2d0 mm/kmsan/kmsan.c:611
       __msan_warning+0x75/0xe0 mm/kmsan/kmsan_instr.c:304
       tcp_create_openreq_child+0x157f/0x1cc0 net/ipv4/tcp_minisocks.c:526
       tcp_v6_syn_recv_sock+0x761/0x2d80 net/ipv6/tcp_ipv6.c:1152
       tcp_get_cookie_sock+0x16e/0x6b0 net/ipv4/syncookies.c:209
       cookie_v6_check+0x27e0/0x29a0 net/ipv6/syncookies.c:252
       tcp_v6_cookie_check net/ipv6/tcp_ipv6.c:1039 [inline]
       tcp_v6_do_rcv+0xf1c/0x1ce0 net/ipv6/tcp_ipv6.c:1344
       tcp_v6_rcv+0x60b7/0x6a30 net/ipv6/tcp_ipv6.c:1554
       ip6_protocol_deliver_rcu+0x1433/0x22f0 net/ipv6/ip6_input.c:397
       ip6_input_finish net/ipv6/ip6_input.c:438 [inline]
       NF_HOOK include/linux/netfilter.h:305 [inline]
       ip6_input+0x2af/0x340 net/ipv6/ip6_input.c:447
       dst_input include/net/dst.h:439 [inline]
       ip6_rcv_finish net/ipv6/ip6_input.c:76 [inline]
       NF_HOOK include/linux/netfilter.h:305 [inline]
       ipv6_rcv+0x683/0x710 net/ipv6/ip6_input.c:272
       __netif_receive_skb_one_core net/core/dev.c:4981 [inline]
       __netif_receive_skb net/core/dev.c:5095 [inline]
       process_backlog+0x721/0x1410 net/core/dev.c:5906
       napi_poll net/core/dev.c:6329 [inline]
       net_rx_action+0x738/0x1940 net/core/dev.c:6395
       __do_softirq+0x4ad/0x858 kernel/softirq.c:293
       do_softirq_own_stack+0x49/0x80 arch/x86/entry/entry_64.S:1052
       </IRQ>
       do_softirq kernel/softirq.c:338 [inline]
       __local_bh_enable_ip+0x199/0x1e0 kernel/softirq.c:190
       local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32
       rcu_read_unlock_bh include/linux/rcupdate.h:682 [inline]
       ip6_finish_output2+0x213f/0x2670 net/ipv6/ip6_output.c:117
       ip6_finish_output+0xae4/0xbc0 net/ipv6/ip6_output.c:150
       NF_HOOK_COND include/linux/netfilter.h:294 [inline]
       ip6_output+0x5d3/0x720 net/ipv6/ip6_output.c:167
       dst_output include/net/dst.h:433 [inline]
       NF_HOOK include/linux/netfilter.h:305 [inline]
       ip6_xmit+0x1f53/0x2650 net/ipv6/ip6_output.c:271
       inet6_csk_xmit+0x3df/0x4f0 net/ipv6/inet6_connection_sock.c:135
       __tcp_transmit_skb+0x4076/0x5b40 net/ipv4/tcp_output.c:1156
       tcp_transmit_skb net/ipv4/tcp_output.c:1172 [inline]
       tcp_write_xmit+0x39a9/0xa730 net/ipv4/tcp_output.c:2397
       __tcp_push_pending_frames+0x124/0x4e0 net/ipv4/tcp_output.c:2573
       tcp_send_fin+0xd43/0x1540 net/ipv4/tcp_output.c:3118
       tcp_close+0x16ba/0x1860 net/ipv4/tcp.c:2403
       inet_release+0x1f7/0x270 net/ipv4/af_inet.c:427
       inet6_release+0xaf/0x100 net/ipv6/af_inet6.c:470
       __sock_release net/socket.c:601 [inline]
       sock_close+0x156/0x490 net/socket.c:1273
       __fput+0x4c9/0xba0 fs/file_table.c:280
       ____fput+0x37/0x40 fs/file_table.c:313
       task_work_run+0x22e/0x2a0 kernel/task_work.c:113
       tracehook_notify_resume include/linux/tracehook.h:185 [inline]
       exit_to_usermode_loop arch/x86/entry/common.c:168 [inline]
       prepare_exit_to_usermode+0x39d/0x4d0 arch/x86/entry/common.c:199
       syscall_return_slowpath+0x90/0x5c0 arch/x86/entry/common.c:279
       do_syscall_64+0xe2/0xf0 arch/x86/entry/common.c:305
       entry_SYSCALL_64_after_hwframe+0x63/0xe7
      RIP: 0033:0x401d50
      Code: 01 f0 ff ff 0f 83 40 0d 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d dd 8d 2d 00 00 75 14 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 14 0d 00 00 c3 48 83 ec 08 e8 7a 02 00 00
      RSP: 002b:00007fff1cf58cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
      RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000401d50
      RDX: 000000000000001c RSI: 0000000000000000 RDI: 0000000000000003
      RBP: 00000000004a9050 R08: 0000000020000040 R09: 000000000000001c
      R10: 0000000020004004 R11: 0000000000000246 R12: 0000000000402ef0
      R13: 0000000000402f80 R14: 0000000000000000 R15: 0000000000000000
      
      Uninit was created at:
       kmsan_save_stack_with_flags mm/kmsan/kmsan.c:201 [inline]
       kmsan_internal_poison_shadow+0x53/0xa0 mm/kmsan/kmsan.c:160
       kmsan_kmalloc+0xa4/0x130 mm/kmsan/kmsan_hooks.c:177
       kmem_cache_alloc+0x534/0xb00 mm/slub.c:2781
       reqsk_alloc include/net/request_sock.h:84 [inline]
       inet_reqsk_alloc+0xa8/0x600 net/ipv4/tcp_input.c:6384
       cookie_v6_check+0xadb/0x29a0 net/ipv6/syncookies.c:173
       tcp_v6_cookie_check net/ipv6/tcp_ipv6.c:1039 [inline]
       tcp_v6_do_rcv+0xf1c/0x1ce0 net/ipv6/tcp_ipv6.c:1344
       tcp_v6_rcv+0x60b7/0x6a30 net/ipv6/tcp_ipv6.c:1554
       ip6_protocol_deliver_rcu+0x1433/0x22f0 net/ipv6/ip6_input.c:397
       ip6_input_finish net/ipv6/ip6_input.c:438 [inline]
       NF_HOOK include/linux/netfilter.h:305 [inline]
       ip6_input+0x2af/0x340 net/ipv6/ip6_input.c:447
       dst_input include/net/dst.h:439 [inline]
       ip6_rcv_finish net/ipv6/ip6_input.c:76 [inline]
       NF_HOOK include/linux/netfilter.h:305 [inline]
       ipv6_rcv+0x683/0x710 net/ipv6/ip6_input.c:272
       __netif_receive_skb_one_core net/core/dev.c:4981 [inline]
       __netif_receive_skb net/core/dev.c:5095 [inline]
       process_backlog+0x721/0x1410 net/core/dev.c:5906
       napi_poll net/core/dev.c:6329 [inline]
       net_rx_action+0x738/0x1940 net/core/dev.c:6395
       __do_softirq+0x4ad/0x858 kernel/softirq.c:293
       do_softirq_own_stack+0x49/0x80 arch/x86/entry/entry_64.S:1052
       do_softirq kernel/softirq.c:338 [inline]
       __local_bh_enable_ip+0x199/0x1e0 kernel/softirq.c:190
       local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32
       rcu_read_unlock_bh include/linux/rcupdate.h:682 [inline]
       ip6_finish_output2+0x213f/0x2670 net/ipv6/ip6_output.c:117
       ip6_finish_output+0xae4/0xbc0 net/ipv6/ip6_output.c:150
       NF_HOOK_COND include/linux/netfilter.h:294 [inline]
       ip6_output+0x5d3/0x720 net/ipv6/ip6_output.c:167
       dst_output include/net/dst.h:433 [inline]
       NF_HOOK include/linux/netfilter.h:305 [inline]
       ip6_xmit+0x1f53/0x2650 net/ipv6/ip6_output.c:271
       inet6_csk_xmit+0x3df/0x4f0 net/ipv6/inet6_connection_sock.c:135
       __tcp_transmit_skb+0x4076/0x5b40 net/ipv4/tcp_output.c:1156
       tcp_transmit_skb net/ipv4/tcp_output.c:1172 [inline]
       tcp_write_xmit+0x39a9/0xa730 net/ipv4/tcp_output.c:2397
       __tcp_push_pending_frames+0x124/0x4e0 net/ipv4/tcp_output.c:2573
       tcp_send_fin+0xd43/0x1540 net/ipv4/tcp_output.c:3118
       tcp_close+0x16ba/0x1860 net/ipv4/tcp.c:2403
       inet_release+0x1f7/0x270 net/ipv4/af_inet.c:427
       inet6_release+0xaf/0x100 net/ipv6/af_inet6.c:470
       __sock_release net/socket.c:601 [inline]
       sock_close+0x156/0x490 net/socket.c:1273
       __fput+0x4c9/0xba0 fs/file_table.c:280
       ____fput+0x37/0x40 fs/file_table.c:313
       task_work_run+0x22e/0x2a0 kernel/task_work.c:113
       tracehook_notify_resume include/linux/tracehook.h:185 [inline]
       exit_to_usermode_loop arch/x86/entry/common.c:168 [inline]
       prepare_exit_to_usermode+0x39d/0x4d0 arch/x86/entry/common.c:199
       syscall_return_slowpath+0x90/0x5c0 arch/x86/entry/common.c:279
       do_syscall_64+0xe2/0xf0 arch/x86/entry/common.c:305
       entry_SYSCALL_64_after_hwframe+0x63/0xe7
      
      Fixes: 336c39a0 ("tcp: undo init congestion window on false SYNACK timeout")
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Cc: Yuchung Cheng <ycheng@google.com>
      Cc: Neal Cardwell <ncardwell@google.com>
      Cc: Soheil Hassas Yeganeh <soheil@google.com>
      Reported-by: default avatarsyzbot <syzkaller@googlegroups.com>
      Acked-by: default avatarSoheil Hassas Yeganeh <soheil@google.com>
      Acked-by: default avatarYuchung Cheng <ycheng@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      85f9aa75
    • Nathan Huckleberry's avatar
      net: mvpp2: debugfs: Add pmap to fs dump · 8110a7a7
      Nathan Huckleberry authored
      There was an unused variable 'mvpp2_dbgfs_prs_pmap_fops'
      Added a usage consistent with other fops to dump pmap
      to userspace.
      
      Cc: clang-built-linux@googlegroups.com
      Link: https://github.com/ClangBuiltLinux/linux/issues/529Signed-off-by: default avatarNathan Huckleberry <nhuck@google.com>
      Tested-by: default avatarNick Desaulniers <ndesaulniers@google.com>
      Reviewed-by: default avatarNick Desaulniers <ndesaulniers@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8110a7a7