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tag: v2.6.16

Mar 20, 2006

  1. Linux 2.6.16

    Linus Torvalds authored
  2. [PATCH] Remove obsolete CREDITS address

    This address is going to be obsolete, so I should update it.
    Andrea Arcangeli authored Linus Torvalds committed
  3. Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-…

    …linus
    
    * 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
      [MIPS] SB1: Check for -mno-sched-prolog if building corelis debug kernel.
      [MIPS] Sibyte: Fix race in sb1250_gettimeoffset().
      [MIPS] Sibyte: Fix interrupt timer off by one bug.
      [MIPS] Sibyte: Fix M_SCD_TIMER_INIT and M_SCD_TIMER_CNT wrong field width.
      [MIPS] Protect more of timer_interrupt() by xtime_lock.
      [MIPS] Work around bad code generation for <asm/io.h>.
      [MIPS] Simple patch to power off DBAU1200
      [MIPS] Fix DBAu1550 software power off.
      [MIPS] local_r4k_flush_cache_page fix
      [MIPS] SB1: Fix interrupt disable hazard.
      [MIPS] Get rid of the IP22-specific code in arclib.
      Update MAINTAINERS entry for MIPS.
    Linus Torvalds authored

Mar 19, 2006

  1. [TG3]: 40-bit DMA workaround part 2

    The 40-bit DMA workaround recently implemented for 5714, 5715, and
    5780 needs to be expanded because there may be other tg3 devices
    behind the EPB Express to PCIX bridge in the 5780 class device.
    
    For example, some 4-port card or mother board designs have 5704 behind
    the 5714.
    
    All devices behind the EPB require the 40-bit DMA workaround.
    
    Thanks to Chris Elmquist again for reporting the problem and testing
    the patch.
    
    Signed-off-by: Michael Chan <mchan@broadcom.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Michael Chan authored davem330 committed
  2. Ralf Baechle

    [AX.25]: Fix potencial memory hole.

    If the AX.25 dialect chosen by the sysadmin is set to DAMA master / 3
    (or DAMA slave / 2, if CONFIG_AX25_DAMA_SLAVE=n) ax25_kick() will fall
    through the switch statement without calling ax25_send_iframe() or any
    other function that would eventually free skbn thus leaking the packet.
    
    Fix by restricting the sysctl inferface to allow only actually supported
    AX.25 dialects.
    
    The system administration mistake needed for this to happen is rather
    unlikely, so this is an uncritical hole.
    
    Coverity #651.
    
    Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    ralfbaechle authored davem330 committed

Mar 18, 2006

  1. Michael Ira Krufky

    [PATCH] Kconfig: swap VIDEO_CX88_ALSA and VIDEO_CX88_DVB

    VIDEO_CX88_ALSA should not be between VIDEO_CX88_DVB and
    VIDEO_CX88_DVB_ALL_FRONTENDS
    
    When cx88-alsa was added to cx88/Kconfig, it was added in between
    VIDEO_CX88_DVB and VIDEO_CX88_DVB_ALL_FRONTENDS.  This caused
    undesireable effects to the appearance of the menu options in
    menuconfig.
    
    This fix reorders cx88-alsa and cx88-dvb in Kconfig, to match saa7134,
    and restore the correct menuconfig appearance.
    
    Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
    Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    mkrufky authored Linus Torvalds committed
  2. [PATCH] Fixed em28xx based system lockup

    Fixed em28xx based system lockup, device needs to be initialized before
    starting the isoc transfer otherwise the system will completly lock up.
    
    Signed-off-by: Markus Rechberger <mrechberger@gmail.com>
    Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Markus Rechberger authored Linus Torvalds committed
  3. [PATCH] disable unshare(CLONE_VM) for now

    sys_unshare() does mmput(new_mm).  This is not enough if we have
    mm->core_waiters.
    
    This patch is a temporary fix for soon to be released 2.6.16.
    
    Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
    [ Checked with Uli: "I'm not planning to use unshare(CLONE_VM).  It's
      not needed for any functionality planned so far.  What we (as in Red
      Hat) need unshare() for now is the filesystem side." ]
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Oleg Nesterov authored Linus Torvalds committed
  4. Ralf Baechle

    [MIPS] SB1: Check for -mno-sched-prolog if building corelis debug ker…

    …nel.
    
    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
    ralfbaechle authored
  5. Ralf Baechle

    [MIPS] Sibyte: Fix race in sb1250_gettimeoffset().

        
    From Dave Johnson <djohnson+linuxmips@sw.starentnetworks.com>:
        
    sb1250_gettimeoffset() simply reads the current cpu 0 timer remaining
    value, however once this counter reaches 0 and the interrupt is raised,
    it immediately resets and begins to count down again.
        
    If sb1250_gettimeoffset() is called on cpu 1 via do_gettimeofday() after
    the timer has reset but prior to cpu 0 processing the interrupt and
    taking write_seqlock() in timer_interrupt() it will return a full value
    (or close to it) causing time to jump backwards 1ms. Once cpu 0 handles
    the interrupt and timer_interrupt() gets far enough along it will jump
    forward 1ms.
        
    Fix this problem by implementing mips_hpt_*() on sb1250 using a spare
    timer unrelated to the existing periodic interrupt timers. It runs at
    1Mhz with a full 23bit counter.  This eliminated the custom
    do_gettimeoffset() for sb1250 and allowed use of the generic
    fixed_rate_gettimeoffset() using mips_hpt_*() and timerhi/timerlo.
        
    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
    ralfbaechle authored
  6. Ralf Baechle

    [MIPS] Sibyte: Fix interrupt timer off by one bug.

        
    From Dave Johnson <djohnson+linuxmips@sw.starentnetworks.com>:
        
    The timers need to be loaded with 1 less than the desired interval not
    the interval itself.
        
    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
    ralfbaechle authored
  7. Ralf Baechle

    [MIPS] Sibyte: Fix M_SCD_TIMER_INIT and M_SCD_TIMER_CNT wrong field w…

    …idth.
    
        
    From Dave Johnson <djohnson+linuxmips@sw.starentnetworks.com>:
        
    Field width should be 23 bits not 20 bits.
        
    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
    ralfbaechle authored
  8. Ralf Baechle

    [MIPS] Protect more of timer_interrupt() by xtime_lock.

        
    From Dave Johnson <djohnson+linuxmips@sw.starentnetworks.com>:
    
    * do_timer() expects the arch-specific handler to take the lock as it
      modifies jiffies[_64] and xtime.
    * writing timerhi/lo in timer_interrupt() will mess up
      fixed_rate_gettimeoffset() which reads timerhi/lo.
        
    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
    ralfbaechle authored
  9. Ralf Baechle

    [MIPS] Work around bad code generation for <asm/io.h>.

        
    If a call to set_io_port_base() was being followed by usage of
    mips_io_port_base in the same function gcc was possibly using the old
    value due to some clever abuse of const.  Adding a barrier will keep
    the optimization and result in correct code with latest gcc.
        
    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
    ralfbaechle authored
  10. [MIPS] Simple patch to power off DBAU1200

        
    Signed-off-by: Matej Kupljen <matej.kupljen@ultra.si>
    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
    Matej Kupljen authored ralfbaechle committed
  11. [MIPS] Fix DBAu1550 software power off.

        
    Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
    Sergei Shtylylov authored ralfbaechle committed
  12. [MIPS] local_r4k_flush_cache_page fix

        
    If dcache_size != icache_size or dcache_size != scache_size, or
    set-associative cache, icache/scache does not flushed properly.  Make
    blast_?cache_page_indexed() masks its index value correctly.  Also,
    use physical address for physically indexed pcache/scache.
        
    Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
    Atsushi Nemoto authored ralfbaechle committed
  13. Ralf Baechle

    [MIPS] SB1: Fix interrupt disable hazard.

        
    The SB1 core has a three cycle interrupt disable hazard but we were
    wrongly treating it as fully interlocked.
        
    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
    ralfbaechle authored
  14. Ralf Baechle

    [MIPS] Get rid of the IP22-specific code in arclib.

        
    This breaks the kernel build if sgiwd93 was configured as a module.
        
    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
    ralfbaechle authored
  15. Ralf Baechle

    Update MAINTAINERS entry for MIPS.

        
    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
    ralfbaechle authored
  16. [NET]: Fix race condition in sk_wait_event().

    It is broken, the condition is checked out of socket lock. It is
    wonderful the bug survived for so long time.
    
    [ This fixes bugzilla #6233:
      race condition in tcp_sendmsg when connection became established ]
    
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Alexey Kuznetsov authored davem330 committed

Mar 17, 2006

  1. [PATCH] fix free swap cache latency

    Lee Revell reported 28ms latency when process with lots of swapped memory
    exits.
    
    2.6.15 introduced a latency regression when unmapping: in accounting the
    zap_work latency breaker, pte_none counted 1, pte_present PAGE_SIZE, but a
    swap entry counted nothing at all.  We think of pages present as the slow
    case, but Lee's trace shows that free_swap_and_cache's radix tree lookup
    can make a lot of work - and we could have been doing it many thousands of
    times without a latency break.
    
    Move the zap_work update up to account swap entries like pages present.
    This does account non-linear pte_file entries, and unmap_mapping_range
    skipping over swap entries, by the same amount even though they're quick:
    but neither of those cases deserves complicating the code (and they're
    treated no worse than they were in 2.6.14).
    
    Signed-off-by: Hugh Dickins <hugh@veritas.com>
    Acked-by: Nick Piggin <npiggin@suse.de>
    Acked-by: Ingo Molnar <mingo@elte.hu>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Hugh Dickins authored Linus Torvalds committed
  2. [PATCH] kbuild: fix buffer overflow in modpost

    Jiri Benc <jbenc@suse.cz> reported that modpost would stop with SIGABRT if
    used with long filepaths.
    The error looked like:
    >   Building modules, stage 2.
    >   MODPOST
    > *** glibc detected *** scripts/mod/modpost: realloc(): invalid next size:
    +0x0809f588 ***
    > [...]
    
    Fix this by allocating at least the required memory + SZ bytes each time.
    Before we sometimes ended up allocating too little memory resuting in the
    glibc detected bug above.  Based on patch originally submitted by: Jiri
    Benc <jbenc@suse.cz>
    
    Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Sam Ravnborg authored Linus Torvalds committed
  3. [PATCH] nfsservctl(): remove user-triggerable printk

    A user can use nfsservctl() to spam the logs.
    
    This can happen because the arguments to the nfsservctl() system call are
    versioned.  This is a good thing.  However, when a bad version is detected,
    the kernel prints a message and then returns an error.
    
    Signed-off-by: Peter Staubach <staubach@redhat.com>
    Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
    Cc: Neil Brown <neilb@cse.unsw.edu.au>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Peter Staubach authored Linus Torvalds committed
  4. [PATCH] fix race in pagevec_strip?

    We can call try_to_release_page() with PagePrivate off and a valid
    page->mapping This may cause all sorts of trouble for the filesystem
    *_releasepage() handlers.  XFS bombs out in that case.
    
    Lock the page before checking for page private.
    
    Signed-off-by: Christoph Lameter <clameter@sgi.com>
    Cc: Nick Piggin <nickpiggin@yahoo.com.au>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Christoph Lameter authored Linus Torvalds committed
  5. [PATCH] dm stripe: Fix bounds

    The dm-stripe target currently does not enforce that the size of a stripe
    device be a multiple of the chunk-size.  Under certain conditions, this can
    lead to I/O requests going off the end of an underlying device.  This
    test-case shows one example.
    
    echo "0 100 linear /dev/hdb1 0" | dmsetup create linear0
    echo "0 100 linear /dev/hdb1 100" | dmsetup create linear1
    echo "0 200 striped 2 32 /dev/mapper/linear0 0 /dev/mapper/linear1 0" | \
       dmsetup create stripe0
    dd if=/dev/zero of=/dev/mapper/stripe0 bs=1k
    
    This will produce the output:
    dd: writing '/dev/mapper/stripe0': Input/output error
    97+0 records in
    96+0 records out
    
    And in the kernel log will be:
    attempt to access beyond end of device
    dm-0: rw=0, want=104, limit=100
    
    The patch will check that the table size is a multiple of the stripe
    chunk-size when the table is created, which will prevent the above striped
    device from being created.
    
    This should not affect tools like LVM or EVMS, since in all the cases I can
    think of, striped devices are always created with the sizes being a
    multiple of the chunk-size.
    
    The size of a stripe device must be a multiple of its chunk-size.
    
    (akpm: that typecast is quite gratuitous)
    
    Signed-off-by: Kevin Corry <kevcorry@us.ibm.com>
    Signed-off-by: Alasdair G Kergon <agk@redhat.com>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Kevin Corry authored Linus Torvalds committed
  6. [PATCH] x86: check for online cpus before bringing them up

    Bryce reported a bug wherein offlining CPU0 (on x86 box) and then
    subsequently onlining it resulted in a lockup.
    
    On x86, CPU0 is never offlined.  The subsequent attempt to online CPU0
    doesn't take that into account.  It actually tries to bootup the already
    booted CPU.  Following patch fixes the problem (as acknowledged by Bryce).
    Please consider for inclusion in 2.6.16.
    
    Check if cpu is already online.
    
    Signed-off-by: Srivatsa Vaddagiri <vatsa@in.ibm.com>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Srivatsa Vaddagiri authored Linus Torvalds committed
  7. [PATCH] v9fs: fix overzealous dropping of dentry which breaks dcache

    There is a d_drop in dir_release which caused problems as it invalidates
    dcache entries too soon.  This was likely a part of the wierd cwd behavior
    folks were seeing.
    
    Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Eric Van Hensbergen authored Linus Torvalds committed
  8. [PATCH] posix-timers: fix requeue accounting when signal is ignored

    When the posix-timer signal is ignored then the timer is rearmed by the
    callback function.  The requeue pending accounting has to be fixed up else
    the state might be wrong.
    
    Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Roman Zippel authored Linus Torvalds committed
  9. [PATCH] time_interpolator: add __read_mostly

    The pointer to the current time interpolator and the current list of time
    interpolators are typically only changed during bootup.  Adding
    __read_mostly takes them away from possibly hot cachelines.
    
    Signed-off-by: Christoph Lameter <clameter@sgi.com>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Christoph Lameter authored Linus Torvalds committed
  10. [PATCH] page migration: Fail with error if swap not setup

    Currently the migration of anonymous pages will silently fail if no swap is
    setup.  This patch makes page migration functions check for available swap
    and fail with -ENODEV if no swap space is available.
    
    Signed-off-by: Christoph Lameter <clameter@sgi.com>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Christoph Lameter authored Linus Torvalds committed
  11. ebiederm

    [PATCH] unshare: Use rcu_assign_pointer when setting sighand

    The sighand pointer only needs the rcu_read_lock on the
    read side.  So only depending on task_lock protection
    when setting this pointer is not enough.  We also need
    a memory barrier to ensure the initialization is seen first.
    
    Use rcu_assign_pointer as it does this for us, and clearly
    documents that we are setting an rcu readable pointer.
    
    Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
    Acked-by: Paul E. McKenney <paulmck@us.ibm.com>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    ebiederm authored Linus Torvalds committed
  12. [netdrvr] fix array overflows in Chelsio driver

    Adrian Bunk wrote:
    > The Coverity checker spotted the following two array overflows in
    > drivers/net/chelsio/sge.c (in both cases, the arrays contain 3
    > elements):
    [snip]
    
    This is a bug. The array should contain 2 elements.  Here is the fix.
    
    Signed-off-by: Scott Bardone <sbardone@chelsio.com>
    Signed-off-by: Jeff Garzik <jeff@garzik.org>
    Scott Bardone authored Jeff Garzik committed
  13. davem330

    [PATCH] e1000 endianness bugs

    	return -E_NO_BIG_ENDIAN_TESTING;
    
    [E1000]: Fix 4 missed endianness conversions on RX descriptor fields.
    
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Jeff Garzik <jeff@garzik.org>
    davem330 authored Jeff Garzik committed
  14. Merge branch 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/k…

    …ernel/git/linville/wireless-2.6
    Jeff Garzik authored
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