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tag: v2.6.13

Aug 28, 2005

  1. Linux v2.6.13

    Linus Torvalds authored
  2. [PATCH] zfcp: bugfix and compile fixes

    Bugfix (usage of uninitialized pointer in zfcp_port_dequeue) and compile
    fixes for the zfcp device driver.
    
    Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
    Acked-by: James Bottomley <James.Bottomley@steeleye.com>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Heiko Carstens authored Linus Torvalds committed
  3. [PATCH] zfcp: fix compilation due to rports changes

    struct zfcp_port::scsi_id was removed by commit
      3859f6a
    
    Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Alexey Dobriyan authored Linus Torvalds committed
  4. Merge refs/heads/upstream-fixes from master.kernel.org:/pub/scm/linux…

    …/kernel/git/jgarzik/netdev-2.6
    Linus Torvalds authored
  5. Paul Mackerras

    [PATCH] Remove race between con_open and con_close

    [ Same race and same patch also by Steven Rostedt <rostedt@goodmis.org> ]
    
    I have a laptop (G3 powerbook) which will pretty reliably hit a race
    between con_open and con_close late in the boot process and oops in
    vt_ioctl due to tty->driver_data being NULL.
    
    What happens is this: process A opens /dev/tty6; it comes into
    con_open() (drivers/char/vt.c) and assign a non-NULL value to
    tty->driver_data.  Then process A closes that and concurrently process
    B opens /dev/tty6.  Process A gets through con_close() and clears
    tty->driver_data, since tty->count == 1.  However, before process A
    can decrement tty->count, we switch to process B (e.g. at the
    down(&tty_sem) call at drivers/char/tty_io.c line 1626).
    
    So process B gets to run and comes into con_open with tty->count == 2,
    as tty->count is incremented (in init_dev) before con_open is called.
    Because tty->count != 1, we don't set tty->driver_data.  Then when the
    process tries to do anything with that fd, it oopses.
    
    The simple and effective fix for this is to test tty->driver_data
    rather than tty->count in con_open.  The testing and setting of
    tty->driver_data is serialized with respect to the clearing of
    tty->driver_data in con_close by the console_sem.  We can't get a
    situation where con_open sees tty->driver_data != NULL and then
    con_close on a different fd clears tty->driver_data, because
    tty->count is incremented before con_open is called.  Thus this patch
    eliminates the race, and in fact with this patch my laptop doesn't
    oops.
    
    Signed-off-by: Paul Mackerras <paulus@samba.org>
    [ Same patch
    Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
      in http://marc.theaimsgroup.com/?l=linux-kernel&m=112450820432121&w=2 ]
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    paulusmack authored Linus Torvalds committed

Aug 27, 2005

  1. [PATCH] zfcp: add rports to enable scsi_add_device to work again

    This patch fixes a severe problem with 2.6.13-rc7.
    
    Due to recent SCSI changes it is not possible to add any LUNs to the zfcp
    device driver anymore.  With registration of remote ports this is fixed.
    
    Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
    Acked-by: James Bottomley <jejb@steeleye.com>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Andreas Herrmann authored Linus Torvalds committed
  2. [PATCH] sg.c: fix a memory leak in devices seq_file implementation

    I know that scsi procfs is legacy code but this is a fix for a memory leak.
    
    While reading through sg.c I realized that the implementation of
    /proc/scsi/sg/devices with seq_file is leaking memory due to freeing the
    pointer returned by the next() iterator method.  Since next() might return
    NULL or an error this is wrong.  This patch fixes it through using the
    seq_files private field for holding the reference to the iterator object.
    
    Here is a small bash script to trigger the leak. Use slabtop to watch
    the size-32 usage grow and grow.
    
    #!/bin/sh
    
    while true; do
    	cat /proc/scsi/sg/devices > /dev/null
    done
    
    Signed-off-by: Jan Blunck <j.blunck@tu-harburg.de>
    Acked-by: James Bottomley <James.Bottomley@steeleye.com>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Jan Blunck authored Linus Torvalds committed
  3. [PATCH] fix for race problem in DVB USB drivers (dibusb)

    Fixed race between submitting streaming URBs in the driver and starting
    the actual transfer in hardware (demodulator and USB controller) which
    sometimes lead to garbled data transfers. URBs are now submitted first,
    then the transfer is enabled. Dibusb devices and clones are now fully
    functional again.
    
    Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Patrick Boettcher authored Linus Torvalds committed
  4. [PATCH] Fix capifs bug in initialization error path.

    This fixes a bug in the capifs initialization code, where the
    filesystem is not unregistered if kern_mount() fails.
    
    Signed-off-by: James Morris <jmorris@namei.org>
    Signed-off-by: Karsten Keil <kkeil@suse.de>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    James Morris authored Linus Torvalds committed
  5. ebiederm

    [PATCH] acpi_shutdown: Only prepare for power off on power_off

    When acpi_sleep_prepare was moved into a shutdown method we
    started calling it for all shutdowns.
    
    It appears this triggers some systems to power off on reboot.
    
    Avoid this by only calling acpi_sleep_prepare if we are going to power
    off the system.
    
    Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    ebiederm authored Linus Torvalds committed
  6. [PATCH] mmaper_kern.c fixes [buffer overruns]

     - copy_from_user() can fail; ->write() must check its return value.
    
     - severe buffer overruns both in ->read() and ->write() - lseek to the
       end (i.e.  to mmapper_size) and
    
    	if (count + *ppos > mmapper_size)
    		count = count + *ppos - mmapper_size;
    
       will do absolutely nothing.  Then it will call
    
    	copy_to_user(buf,&v_buf[*ppos],count);
    
       with obvious results (similar for ->write()).
    
       Fixed by turning read to simple_read_from_buffer() and by doing
       normal limiting of count in ->write().
    
     - gratitious lock_kernel() in ->mmap() - it's useless there.
    
     - lots of gratuitous includes.
    
    Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Al Viro authored Linus Torvalds committed
  7. Ralf Baechle

    [PATCH] Fix 6pack setting of MAC address

    Don't check type of sax25_family; dev_set_mac_address has already done
    that before and anyway, the type to check against would have been
    ARPHRD_AX25.  We only got away because AF_AX25 and ARPHRD_AX25 both happen
    to be defined to the same value.
    
    Don't check sax25_ndigis either; it's value is insignificant for the
    purpose of setting the MAC address and the check has shown to break
    some application software for no good reason.
    
    Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
    Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
    ralfbaechle authored Jeff Garzik committed
  8. Ralf Baechle

    [PATCH] 6pack Timer initialization

    I dropped the timer initialization bits by accident when sending the
    p-persistence fix.  This patch gets the driver to work again on halfduplex
    links.
    
    Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
    Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
    ralfbaechle authored Jeff Garzik committed
  9. [PATCH] Fix oops in sysfs_hash_and_remove_file()

    The problem arises if an entity in sysfs is created and removed without
    ever having been made completely visible.  In SCSI this is triggered by
    removing a device while it's initialising.
    
    The problem appears to be that because it was never made visible in sysfs,
    the sysfs dentry has a null d_inode which oopses when a reference is made
    to it.  The solution is simply to check d_inode and assume the object was
    never made visible (and thus doesn't need deleting) if it's NULL.
    
    (akpm: possibly a stopgap for 2.6.13 scsi problems.  May not be the
    long-term fix)
    
    Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
    Cc: Greg KH <greg@kroah.com>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    James Bottomley authored Linus Torvalds committed
  10. [PATCH] md: clear the 'recovery' flags when starting an md array.

    It's possible for this to still have flags in it and a previous instance
    has been stopped, and that confused the new array using the same mddev.
    
    Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    NeilBrown authored Linus Torvalds committed
  11. [PATCH] md: create a MODULE_ALIAS for md corresponding to its block m…

    …ajor number.
    
    I just discovered this is needed for module auto-loading.
    
    Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    NeilBrown authored Linus Torvalds committed
  12. [PATCH] IB: fix use-after-free in user verbs cleanup

    Fix a use-after-free bug in userspace verbs cleanup: we can't touch
    mr->device after we free mr by calling ib_dereg_mr().
    
    Signed-off-by: Roland Dreier <rolandd@cisco.com>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Roland Dreier authored Linus Torvalds committed
  13. [PATCH] arm: fix IXP4xx flash resource range

    We are currently reserving one byte more than actually needed by the flash
    device and overlapping into the next I/O expansion bus window.  This a)
    causes us to allocate an extra page of VM due to ARM ioremap() alignment
    code and b) could cause problems if another driver tries to request the
    next expansion bus window.
    
    Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
    Cc: Russell King <rmk@arm.linux.org.uk>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Deepak Saxena authored Linus Torvalds committed
  14. [PATCH] x86_64: Tell VM about holes in nodes

    Some nodes can have large holes on x86-64.
    
    This fixes problems with the VM allowing too many dirty pages because it
    overestimates the number of available RAM in a node.  In extreme cases you
    can end up with all RAM filled with dirty pages which can lead to deadlocks
    and other nasty behaviour.
    
    This patch just tells the VM about the known holes from e820.  Reserved
    (like the kernel text or mem_map) is still not taken into account, but that
    should be only a few percent error now.
    
    Small detail is that the flat setup uses the NUMA free_area_init_node() now
    too because it offers more flexibility.
    
    (akpm: lotsa thanks to Martin for working this problem out)
    
    Cc: Martin Bligh <mbligh@mbligh.org>
    Signed-off-by: Andi Kleen <ak@suse.de>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Andi Kleen authored Linus Torvalds committed
  15. [PATCH] I2C hwmon: kfree fixes

    This patch fixes several instances of hwmon drivers kfree'ing the "wrong"
    pointer; the existing code works somewhat by accident.
    
    (akpm: plucked from Greg's queue based on lkml discussion.  Finishes off the
    patch from Jon Corbet)
    
    Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
    Signed-off-by: Jean Delvare <khali@linux-fr.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Mark M. Hoffman authored Linus Torvalds committed
  16. Anton Blanchard

    [PATCH] ppc64: Fix issue with gcc 4.0 compiled kernels

    I recently had a BUG_ON() go off spuriously on a gcc 4.0 compiled kernel.
    It turns out gcc-4.0 was removing a sign extension while earlier gcc
    versions would not.  Thinking this to be a compiler bug, I submitted a
    report:
    
    http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23422
    
    It turns out we need to cast the input in order to tell gcc to sign extend
    it.
    
    Thanks to Andrew Pinski for his help on this bug.
    
    Signed-off-by: Anton Blanchard <anton@samba.org>
    Cc: Paul Mackerras <paulus@samba.org>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    antonblanchard authored Linus Torvalds committed

Aug 26, 2005

  1. [PATCH] completely disable cpu_exclusive sched domain

    At the suggestion of Nick Piggin and Dinakar, totally disable
    the facility to allow cpu_exclusive cpusets to define dynamic
    sched domains in Linux 2.6.13, in order to avoid problems
    first reported by John Hawkes (corrupt sched data structures
    and kernel oops).
    
    This has been built for ppc64, i386, ia64, x86_64, sparc, alpha.
    It has been built, booted and tested for cpuset functionality
    on an SN2 (ia64).
    
    Dinakar or Nick - could you verify that it for sure does avoid
    the problems Hawkes reported.  Hawkes is out of town, and I don't
    have the recipe to reproduce what he found.
    
    Signed-off-by: Paul Jackson <pj@sgi.com>
    Acked-by: Nick Piggin <npiggin@suse.de>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Paul Jackson authored Linus Torvalds committed
  2. [PATCH] undo partial cpu_exclusive sched domain disabling

    The partial disabling of Dinakar's new facility to allow
    cpu_exclusive cpusets to define dynamic sched domains
    doesn't go far enough.  At the suggestion of Nick Piggin
    and Dinakar, let us instead totally disable this facility
    for 2.6.13, in order to avoid problems first reported
    by John Hawkes (corrupt sched data structures and kernel oops).
    
    This patch removes the partial disabling code in 2.6.13-rc7,
    in anticipation of the next patch, which will totally disable
    it instead.
    
    Signed-off-by: Paul Jackson <pj@sgi.com>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Paul Jackson authored Linus Torvalds committed
  3. Merge HEAD from master.kernel.org:/pub/scm/linux/kernel/git/davem/net…

    …-2.6.git
    Linus Torvalds authored
  4. [PATCH] hwmon: Off-by-one error in fscpos driver

    Coverity uncovered an off-by-one error in the fscpos driver, in function
    set_temp_reset(). Writing to the temp3_reset sysfs file will lead to an
    array overrun, in turn causing an I2C write to a random register of the
    FSC Poseidon chip. Additionally, writing to temp1_reset and temp2_reset
    will not work as expected. The fix is straightforward.
    
    Signed-off-by: Jean Delvare <khali@linux-fr.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Jean Delvare authored Linus Torvalds committed
  5. [PATCH] ppc32 8xx: fix m8xx_ide_init() #ifdef

    Be more precise on deciding whether to call m8xx_ide_init() at
    m8xx_setup.c:platform_init().
    
    Compilation fails if CONFIG_BLK_DEV_IDE is defined but
    CONFIG_BLK_DEV_MPC8xx_IDE isnt.
    
    Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Marcelo Tosatti authored Linus Torvalds committed
  6. [PATCH] late spinlock initialization in ieee1394/ohci

    spinlock used in irq handler should be initialized before registering
    irq, even if we know that our device has interrupts disabled; handler
    is registered shared and taking spinlock is done unconditionally.  As
    it is, we can and do get oopsen on boot for some configuration, depending
    on irq routing - I've got a reproducer.
    
    Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
    Signed-off-by: Ben Collins <bcollins@debian.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Al Viro authored Linus Torvalds committed
  7. [PATCH] bogus function type in qdio

    In qdio_get_micros() volatile in return type is plain noise (even with old
    gccisms it would make no sense - noreturn function returning __u64 is a
    bit odd ;-)
    
    Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Al Viro authored Linus Torvalds committed
  8. [PATCH] bogus iounmap() in emac

    Dumb typo: iounmap(&local_pointer_variable).
    
    Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Al Viro authored Linus Torvalds committed
  9. [PATCH] drivers/hwmon/*: kfree() correct pointers

    The adm9240 driver, in adm9240_detect(), allocates a structure.  The
    error path attempts to kfree() ->client field of it (second one),
    resulting in an oops (or slab corruption) if the hardware is not present.
    
    ->client field in adm1026, adm1031, smsc47b397 and smsc47m1 is the first in
    ${HWMON}_data structure, but fix them too.
    
    Signed-off-by: Jonathan Corbet <corbet@lwn.net
    Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Alexey Dobriyan authored Linus Torvalds committed
  10. [PATCH] Fix oops in fs/locks.c on close of file with pending locks

    The recent change to locks_remove_flock code in fs/locks.c changes how
    byte range locks are removed from closing files, which shows up a bug in
    cifs.
    
    The assumption in the cifs code was that the close call sent to the
    server would remove any pending locks on the server on this file, but
    that is no longer safe as the fs/locks.c code on the client wants unlock
    of 0 to PATH_MAX to remove all locks (at least from this client, it is
    not possible AFAIK to remove all locks from other clients made to the
    server copy of the file).
    
    Note that cifs locks are different from posix locks - and it is not
    possible to map posix locks perfectly on the wire yet, due to
    restrictions of the cifs network protocol, even to Samba without adding
    a new request type to the network protocol (which we plan to do for
    Samba 3.0.21 within a few months), but the local client will have the
    correct, posix view, of the lock in most cases.
    
    The correct fix for cifs for this would involve a bigger change than I
    would like to do this late in the 2.6.13-rc cycle - and would involve
    cifs keeping track of all unmerged (uncoalesced) byte range locks for
    each remote inode and scanning that list to remove locks that intersect
    or fall wholly within the range - locks that intersect may have to be
    reaquired with the smaller, remaining range.
    
    Signed-off-by: Steve French <sfrench@us.ibm.com>
    Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Steve French authored Linus Torvalds committed
  11. [PATCH] hppfs: fix symlink error path

    While touching this code I noticed the error handling is bogus, so I
    fixed it up.
    
    I've removed the IS_ERR(proc_dentry) check, which will never trigger and
    is clearly a typo: we must check proc_file instead.
    
    Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Paolo 'Blaisorblade' Giarrusso authored Linus Torvalds committed
  12. [PATCH] Fixup symlink function pointers for hppfs [for 2.6.13]

    Update hppfs for the symlink functions prototype change.
    
    Yes, I know the code I leave there is still _bogus_, see next patch for
    this.
    
    Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Paolo 'Blaisorblade' Giarrusso authored Linus Torvalds committed
  13. [PATCH] Document idr_get_new_above() semantics, update inotify

    There is an off by one problem with idr_get_new_above.
    
    The comment and function name suggest that it will return an id >
    starting_id, but it actually returned an id >= starting_id, and kernel
    callers other than inotify treated it as such.
    
    The patch below fixes the comment, and fixes inotifys usage.  The
    function name still doesn't match the behaviour, but it never did.
    
    Signed-off-by: John McCutchan <ttb@tentacle.dhs.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    John McCutchan authored Linus Torvalds committed
  14. Ignore disabled ROM resources at setup

    Writing even a disabled value seems to mess up some matrox graphics
    cards.  It may be a card-related issue, but we may also be writing
    reserved low bits in the result.
    
    This was a fall-out of switching x86 over to the generic PCI resource
    allocation code, and needs more debugging.  In particular, the old x86
    code defaulted to not doing any resource allocations at all for ROM
    resources.
    
    In the meantime, this has been reported to make X happier by Helge
    Hafting <helgehaf@aitel.hist.no>.
    
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    Linus Torvalds authored
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