1. 06 5月, 2015 20 次提交
  2. 05 5月, 2015 1 次提交
  3. 04 5月, 2015 11 次提交
    • Á
      hwrng: bcm63xx - Fix driver compilation · f440c4ee
      Álvaro Fernández Rojas 提交于
      - s/clk_didsable_unprepare/clk_disable_unprepare
      - s/prov/priv
      - s/error/ret (bcm63xx_rng_probe)
      
      Fixes: 6229c160 ("hwrng: bcm63xx - make use of devm_hwrng_register")
      Signed-off-by: NÁlvaro Fernández Rojas <noltari@gmail.com>
      Acked-by: NFlorian Fainelli <f.fainelli@gmail.com>
      Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      f440c4ee
    • D
      lib: make memzero_explicit more robust against dead store elimination · 7829fb09
      Daniel Borkmann 提交于
      In commit 0b053c95 ("lib: memzero_explicit: use barrier instead
      of OPTIMIZER_HIDE_VAR"), we made memzero_explicit() more robust in
      case LTO would decide to inline memzero_explicit() and eventually
      find out it could be elimiated as dead store.
      
      While using barrier() works well for the case of gcc, recent efforts
      from LLVMLinux people suggest to use llvm as an alternative to gcc,
      and there, Stephan found in a simple stand-alone user space example
      that llvm could nevertheless optimize and thus elimitate the memset().
      A similar issue has been observed in the referenced llvm bug report,
      which is regarded as not-a-bug.
      
      Based on some experiments, icc is a bit special on its own, while it
      doesn't seem to eliminate the memset(), it could do so with an own
      implementation, and then result in similar findings as with llvm.
      
      The fix in this patch now works for all three compilers (also tested
      with more aggressive optimization levels). Arguably, in the current
      kernel tree it's more of a theoretical issue, but imho, it's better
      to be pedantic about it.
      
      It's clearly visible with gcc/llvm though, with the below code: if we
      would have used barrier() only here, llvm would have omitted clearing,
      not so with barrier_data() variant:
      
        static inline void memzero_explicit(void *s, size_t count)
        {
          memset(s, 0, count);
          barrier_data(s);
        }
      
        int main(void)
        {
          char buff[20];
          memzero_explicit(buff, sizeof(buff));
          return 0;
        }
      
        $ gcc -O2 test.c
        $ gdb a.out
        (gdb) disassemble main
        Dump of assembler code for function main:
         0x0000000000400400  <+0>: lea   -0x28(%rsp),%rax
         0x0000000000400405  <+5>: movq  $0x0,-0x28(%rsp)
         0x000000000040040e <+14>: movq  $0x0,-0x20(%rsp)
         0x0000000000400417 <+23>: movl  $0x0,-0x18(%rsp)
         0x000000000040041f <+31>: xor   %eax,%eax
         0x0000000000400421 <+33>: retq
        End of assembler dump.
      
        $ clang -O2 test.c
        $ gdb a.out
        (gdb) disassemble main
        Dump of assembler code for function main:
         0x00000000004004f0  <+0>: xorps  %xmm0,%xmm0
         0x00000000004004f3  <+3>: movaps %xmm0,-0x18(%rsp)
         0x00000000004004f8  <+8>: movl   $0x0,-0x8(%rsp)
         0x0000000000400500 <+16>: lea    -0x18(%rsp),%rax
         0x0000000000400505 <+21>: xor    %eax,%eax
         0x0000000000400507 <+23>: retq
        End of assembler dump.
      
      As gcc, clang, but also icc defines __GNUC__, it's sufficient to define
      this in compiler-gcc.h only to be picked up. For a fallback or otherwise
      unsupported compiler, we define it as a barrier. Similarly, for ecc which
      does not support gcc inline asm.
      
      Reference: https://llvm.org/bugs/show_bug.cgi?id=15495Reported-by: NStephan Mueller <smueller@chronox.de>
      Tested-by: NStephan Mueller <smueller@chronox.de>
      Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Cc: Stephan Mueller <smueller@chronox.de>
      Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
      Cc: mancha security <mancha1@zoho.com>
      Cc: Mark Charlebois <charlebm@gmail.com>
      Cc: Behan Webster <behanw@converseincode.com>
      Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      7829fb09
    • L
      Linux 4.1-rc2 · 5ebe6afa
      Linus Torvalds 提交于
      5ebe6afa
    • L
      Merge tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 · 8663da2c
      Linus Torvalds 提交于
      Pull ext4 fixes from Ted Ts'o:
       "Some miscellaneous bug fixes and some final on-disk and ABI changes
        for ext4 encryption which provide better security and performance"
      
      * tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
        ext4: fix growing of tiny filesystems
        ext4: move check under lock scope to close a race.
        ext4: fix data corruption caused by unwritten and delayed extents
        ext4 crypto: remove duplicated encryption mode definitions
        ext4 crypto: do not select from EXT4_FS_ENCRYPTION
        ext4 crypto: add padding to filenames before encrypting
        ext4 crypto: simplify and speed up filename encryption
      8663da2c
    • L
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · 101a6fd3
      Linus Torvalds 提交于
      Pull drm fixes from Dave Airlie:
       "One intel fix, one rockchip fix, and a bunch of radeon fixes for some
        regressions from audio rework and vm stability"
      
      * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
        drm/i915/chv: Implement WaDisableShadowRegForCpd
        drm/radeon: fix userptr return value checking (v2)
        drm/radeon: check new address before removing old one
        drm/radeon: reset BOs address after clearing it.
        drm/radeon: fix lockup when BOs aren't part of the VM on release
        drm/radeon: add SI DPM quirk for Sapphire R9 270 Dual-X 2G GDDR5
        drm/radeon: adjust pll when audio is not enabled
        drm/radeon: only enable audio streams if the monitor supports it
        drm/radeon: only mark audio as connected if the monitor supports it (v3)
        drm/radeon/audio: don't enable packets until the end
        drm/radeon: drop dce6_dp_enable
        drm/radeon: fix ordering of AVI packet setup
        drm/radeon: Use drm_calloc_ab for CS relocs
        drm/rockchip: fix error check when getting irq
        MAINTAINERS: add entry for Rockchip drm drivers
      101a6fd3
    • D
      Merge tag 'drm-intel-fixes-2015-04-30' of git://anongit.freedesktop.org/drm-intel into drm-fixes · 71aee819
      Dave Airlie 提交于
      Just a single intel fix
      * tag 'drm-intel-fixes-2015-04-30' of git://anongit.freedesktop.org/drm-intel:
        drm/i915/chv: Implement WaDisableShadowRegForCpd
      71aee819
    • D
      Merge branch 'drm-next0420' of https://github.com/markyzq/kernel-drm-rockchip into drm-fixes · df9ebeb2
      Dave Airlie 提交于
      one fix and maintainers update
      * 'drm-next0420' of https://github.com/markyzq/kernel-drm-rockchip:
        drm/rockchip: fix error check when getting irq
        MAINTAINERS: add entry for Rockchip drm drivers
      df9ebeb2
    • L
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · 61f06db0
      Linus Torvalds 提交于
      Pull SCSI fixes from James Bottomley:
       "This is three logical fixes (as 5 patches).
      
        The 3ware class of drivers were causing an oops with multiqueue by
        tearing down the command mappings after completing the command (where
        the variables in the command used to tear down the mapping were
        no-longer valid).  There's also a fix for the qnap iscsi target which
        was choking on us sending it commands that were too long and a fix for
        the reworked aha1542 allocating GFP_KERNEL under a lock"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        3w-9xxx: fix command completion race
        3w-xxxx: fix command completion race
        3w-sas: fix command completion race
        aha1542: Allocate memory before taking a lock
        SCSI: add 1024 max sectors black list flag
      61f06db0
    • P
      ideapad_laptop: Add Lenovo G40-30 to devices without radio switch · 9b071a43
      Philippe Coval 提交于
      Lenovo G40-30 does not provide any physical radio switch to user.
      Therefore disable the rfkill switch identically to the Yoga 2 approach.
      (Note for later, models ids are sorted alphabetically).
      
      Benefit is to make wireless available again without unloading module.
      
      It was tested successfully on 4.1.0-rc1 base with this model:
      (LENOVO_MT_80FY_BU_idea_FM_Lenovo G40-30).
      
      BugLink: https://bugs.launchpad.net/ideapad-laptop/+bug/1450946
      Cc: platform-driver-x86@vger.kernel.org
      Cc: linux-kernel@vger.kernel.org
      Signed-off-by: NPhilippe Coval <rzr@gna.org>
      Signed-off-by: NDarren Hart <dvhart@linux.intel.com>
      9b071a43
    • L
      Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma · 33332224
      Linus Torvalds 提交于
      Pull slave dmaengine fixes from Vinod Koul:
       "Here are the fixes in dmaengine subsystem for rc2:
      
         - privatecnt fix for slave dma request API by Christopher
      
         - warn fix for PM ifdef in usb-dmac by Geert
      
         - fix hardware dependency for xgene by Jean"
      
      * 'next' of git://git.infradead.org/users/vkoul/slave-dma:
        dmaengine: increment privatecnt when using dma_get_any_slave_channel
        dmaengine: xgene: Set hardware dependency
        dmaengine: usb-dmac: Protect PM-only functions to kill warning
      33332224
    • L
      Merge tag 'powerpc-4.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux · 180d89f6
      Linus Torvalds 提交于
      Pull powerpc fixes from Michael Ellerman:
       - build fix for SMP=n in book3s_xics.c
       - fix for Daniel's pci_controller_ops on powernv.
       - revert the TM syscall abort patch for now.
       - CPU affinity fix from Nathan.
       - two EEH fixes from Gavin.
       - fix for CR corruption from Sam.
       - selftest build fix.
      
      * tag 'powerpc-4.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux:
        powerpc/powernv: Restore non-volatile CRs after nap
        powerpc/eeh: Delay probing EEH device during hotplug
        powerpc/eeh: Fix race condition in pcibios_set_pcie_reset_state()
        powerpc/pseries: Correct cpu affinity for dlpar added cpus
        selftests/powerpc: Fix the pmu install rule
        Revert "powerpc/tm: Abort syscalls in active transactions"
        powerpc/powernv: Fix early pci_controller_ops loading.
        powerpc/kvm: Fix SMP=n build error in book3s_xics.c
      180d89f6
  4. 03 5月, 2015 3 次提交
    • J
      ext4: fix growing of tiny filesystems · 2c869b26
      Jan Kara 提交于
      The estimate of necessary transaction credits in ext4_flex_group_add()
      is too pessimistic. It reserves credit for sb, resize inode, and resize
      inode dindirect block for each group added in a flex group although they
      are always the same block and thus it is enough to account them only
      once. Also the number of modified GDT block is overestimated since we
      fit EXT4_DESC_PER_BLOCK(sb) descriptors in one block.
      
      Make the estimation more precise. That reduces number of requested
      credits enough that we can grow 20 MB filesystem (which has 1 MB
      journal, 79 reserved GDT blocks, and flex group size 16 by default).
      Signed-off-by: NJan Kara <jack@suse.cz>
      Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
      Reviewed-by: NEric Sandeen <sandeen@redhat.com>
      2c869b26
    • D
      ext4: move check under lock scope to close a race. · 280227a7
      Davide Italiano 提交于
      fallocate() checks that the file is extent-based and returns
      EOPNOTSUPP in case is not. Other tasks can convert from and to
      indirect and extent so it's safe to check only after grabbing
      the inode mutex.
      Signed-off-by: NDavide Italiano <dccitaliano@gmail.com>
      Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
      Cc: stable@vger.kernel.org
      280227a7
    • L
      ext4: fix data corruption caused by unwritten and delayed extents · d2dc317d
      Lukas Czerner 提交于
      Currently it is possible to lose whole file system block worth of data
      when we hit the specific interaction with unwritten and delayed extents
      in status extent tree.
      
      The problem is that when we insert delayed extent into extent status
      tree the only way to get rid of it is when we write out delayed buffer.
      However there is a limitation in the extent status tree implementation
      so that when inserting unwritten extent should there be even a single
      delayed block the whole unwritten extent would be marked as delayed.
      
      At this point, there is no way to get rid of the delayed extents,
      because there are no delayed buffers to write out. So when a we write
      into said unwritten extent we will convert it to written, but it still
      remains delayed.
      
      When we try to write into that block later ext4_da_map_blocks() will set
      the buffer new and delayed and map it to invalid block which causes
      the rest of the block to be zeroed loosing already written data.
      
      For now we can fix this by simply not allowing to set delayed status on
      written extent in the extent status tree. Also add WARN_ON() to make
      sure that we notice if this happens in the future.
      
      This problem can be easily reproduced by running the following xfs_io.
      
      xfs_io -f -c "pwrite -S 0xaa 4096 2048" \
                -c "falloc 0 131072" \
                -c "pwrite -S 0xbb 65536 2048" \
                -c "fsync" /mnt/test/fff
      
      echo 3 > /proc/sys/vm/drop_caches
      xfs_io -c "pwrite -S 0xdd 67584 2048" /mnt/test/fff
      
      This can be theoretically also reproduced by at random by running fsx,
      but it's not very reliable, though on machines with bigger page size
      (like ppc) this can be seen more often (especially xfstest generic/127)
      Signed-off-by: NLukas Czerner <lczerner@redhat.com>
      Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
      Cc: stable@vger.kernel.org
      d2dc317d
  5. 02 5月, 2015 5 次提交
    • C
      ext4 crypto: remove duplicated encryption mode definitions · 9402bdca
      Chanho Park 提交于
      This patch removes duplicated encryption modes which were already in
      ext4.h. They were duplicated from commit 3edc18d8 and commit f542fb.
      
      Cc: Theodore Ts'o <tytso@mit.edu>
      Cc: Michael Halcrow <mhalcrow@google.com>
      Cc: Andreas Dilger <adilger.kernel@dilger.ca>
      Signed-off-by: NChanho Park <chanho61.park@samsung.com>
      Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
      9402bdca
    • H
      ext4 crypto: do not select from EXT4_FS_ENCRYPTION · fb63e548
      Herbert Xu 提交于
      This patch adds a tristate EXT4_ENCRYPTION to do the selections
      for EXT4_FS_ENCRYPTION because selecting from a bool causes all
      the selected options to be built-in, even if EXT4 itself is a
      module.
      Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
      Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
      fb63e548
    • L
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 6c3c1eb3
      Linus Torvalds 提交于
      Pull networking fixes from David Miller:
      
       1) Receive packet length needs to be adjust by 2 on RX to accomodate
          the two padding bytes in altera_tse driver.  From Vlastimil Setka.
      
       2) If rx frame is dropped due to out of memory in macb driver, we leave
          the receive ring descriptors in an undefined state.  From Punnaiah
          Choudary Kalluri
      
       3) Some netlink subsystems erroneously signal NLM_F_MULTI.  That is
          only for dumps.  Fix from Nicolas Dichtel.
      
       4) Fix mis-use of raw rt->rt_pmtu value in ipv4, one must always go via
          the ipv4_mtu() helper.  From Herbert Xu.
      
       5) Fix null deref in bridge netfilter, and miscalculated lengths in
          jump/goto nf_tables verdicts.  From Florian Westphal.
      
       6) Unhash ping sockets properly.
      
       7) Software implementation of BPF divide did 64/32 rather than 64/64
          bit divide.  The JITs got it right.  Fix from Alexei Starovoitov.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (30 commits)
        ipv4: Missing sk_nulls_node_init() in ping_unhash().
        net: fec: Fix RGMII-ID mode
        net/mlx4_en: Schedule napi when RX buffers allocation fails
        netxen_nic: use spin_[un]lock_bh around tx_clean_lock
        net/mlx4_core: Fix unaligned accesses
        mlx4_en: Use correct loop cursor in error path.
        cxgb4: Fix MC1 memory offset calculation
        bnx2x: Delay during kdump load
        net: Fix Kernel Panic in bonding driver debugfs file: rlb_hash_table
        net: dsa: Fix scope of eeprom-length property
        net: macb: Fix race condition in driver when Rx frame is dropped
        hv_netvsc: Fix a bug in netvsc_start_xmit()
        altera_tse: Correct rx packet length
        mlx4: Fix tx ring affinity_mask creation
        tipc: fix problem with parallel link synchronization mechanism
        tipc: remove wrong use of NLM_F_MULTI
        bridge/nl: remove wrong use of NLM_F_MULTI
        bridge/mdb: remove wrong use of NLM_F_MULTI
        net: sched: act_connmark: don't zap skb->nfct
        trivial: net: systemport: bcmsysport.h: fix 0x0x prefix
        ...
      6c3c1eb3
    • S
      virtio: fix typo in vring_need_event() doc comment · e412d3a3
      Stefan Hajnoczi 提交于
      Here the "other side" refers to the guest or host.
      Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
      Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      e412d3a3
    • R
      virtio: pass baton to Michael Tsirkin · feda5f93
      Rusty Russell 提交于
      With my job change kernel work will be "own time"; I'm keeping lguest
      and modules (and the virtio standards work), but virtio kernel has to
      go.
      
      This makes it clear that Michael is in charge.  He's good, but having
      me watch over his shoulder won't help.
      
      Good luck Michael!
      Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      feda5f93