| Commit message (Collapse) | Author | Age |
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This bug is quite subtle and only happens in a very interesting
situation where a real-time threaded process is in the middle of a
coredump when someone whacks it with a SIGKILL. However, this deadlock
leaves the system pretty hosed and you have to reboot to recover.
Not good for real-time priority-preemption applications like our
telephony application, with 90+ real-time (SCHED_FIFO and SCHED_RR)
processes, many of them multi-threaded, interacting with each other for
high volume call processing.
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Changing it to how ip_input handles should fix it.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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1) We send out a normal sized packet with TSO on to start off.
2) ICMP is received indicating a smaller MTU.
3) We send the current sk_send_head which needs to be fragmented
since it was created before the ICMP event. The first fragment
is then sent out.
At this point the remaining fragment is allocated by tcp_fragment.
However, its size is padded to fit the L1 cache-line size therefore
creating tail-room up to 124 bytes long.
This fragment will also be sitting at sk_send_head.
4) tcp_sendmsg is called again and it stores data in the tail-room of
of the fragment.
5) tcp_push_one is called by tcp_sendmsg which then calls tso_fragment
since the packet as a whole exceeds the MTU.
At this point we have a packet that has data in the head area being
fed to tso_fragment which bombs out.
My take on this is that we shouldn't ever call tcp_fragment on a TSO
socket for a packet that is yet to be transmitted since this creates
a packet on sk_send_head that cannot be extended.
So here is a patch to change it so that tso_fragment is always used
in this case.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When packets hit raw sockets the csum update isn't done yet, do it manually.
Packets can also reach rawv6_rcv on the output path through
ip6_call_ra_chain, in this case skb->ip_summed is CHECKSUM_NONE and this
codepath isn't executed.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Paulus suggested that we put xLparMap in its own .c file so that we can
generate a .s file to be included into head.S. This doesn't get around
the problem of having it at a fixed address, but it makes it more
palatable.
It would be good if this could be included in 2.6.13 as it solves our
build problems with various versions of binutils and gcc. In
particular, it allows us to build an iSeries kernel on Debian unstable
using their biarch compiler.
This has been built and booted on iSeries and built for pSeries and g5.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Add copyright statements and fix a typo.
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This patch fixes bug 4905 and a Cintiq 21UX bug.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This removes very old functions from pci docs, which are no longer in
the kernel.
Signed-off-by: Jiri Slaby <xslaby@fi.muni.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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drivers/built-in.o(.text+0x32c3): In function `quirk_pcie_pxh':
/usr/src/25/drivers/pci/quirks.c:1312: undefined reference to `disable_msi_mode'
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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On the 6700/6702 PXH part, a MSI may get corrupted if an ACPI hotplug
driver and SHPC driver in MSI mode are used together.
This patch will prevent MSI from being enabled for the SHPC as part of
an early pci quirk, as well as on any pci device which sets the no_msi
bit.
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This moves the code to free devt_attr from class_device_del() to
class_dev_release() which is called after the last reference to the
corresponding kobject() is gone.
This allows us to keep the devt_attr alive while the corresponding
sysfs file is open.
Signed-off-by: Maneesh Soni <maneesh@in.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Chuck Ebbert noticed that the desc_empty macro is incorrect. Fix it.
Thankfully, this is not used as a security check, but it can falsely
overwrite TLS segments with carefully chosen base / limits. I do not
believe this is an issue in practice, but it is a kernel bug.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Chris Wright <chrisw@osdl.org>
[ x86-64 had the same problem, and the same fix. Linus ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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master.kernel.org:/pub/scm/linux/kernel/git/shaggy/jfs-2.6
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Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
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TxAnchor.anon_list is protected by jfsTxnLock (TXN_LOCK), but there was
a place in txLock() that was removing an entry from the list without holding
the spinlock.
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
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Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
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Some error paths may iput an invalid inode with i_nlink=0. jfs should
not try to actually delete such an inode.
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
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/home/shaggy/git/linus-clean/
/home/shaggy/git/linus-clean/
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
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Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
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Under heavy load, hot metadata pages are often locked by non-committed
transactions, making them difficult to flush to disk. This prevents
the sync point from advancing past a transaction that had modified the
page.
There is a point during the sync barrier processing where all
outstanding transactions have been committed to disk, but no new
transaction have been allowed to proceed. This is the best time
to write the metadata.
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
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Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
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When both platform-specific and generic drivers exist,
enable generic over-ride with "acpi_generic_hotkey".
http://bugzilla.kernel.org/show_bug.cgi?id=4953
Signed-off-by: Luming Yu <luming.yu@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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the buffers when mapping them after the VM had discarded them.
Thanks to Martin MOKREJŠ for the bug report.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
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When the client performs an exclusive create and opens the file for writing,
a Netapp filer will first create the file using the mode 01777. It does this
since an NFSv3/v4 exclusive create cannot immediately set the mode bits.
The 01777 mode then gets put into the inode->i_mode. After the file creation
is successful, we then do a setattr to change the mode to the correct value
(as per the NFS spec).
The problem is that nfs_refresh_inode() no longer updates inode->i_mode, so
the latter retains the 01777 mode. A bit later, the VFS notices this, and calls
remove_suid(). This of course now resets the file mode to inode->i_mode & 0777.
Hey presto, the file mode on the server is now magically changed to 0777. Duh...
Fixes http://bugzilla.linux-nfs.org/show_bug.cgi?id=32
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Fix for ia64 sched domain building triggered by cpuset code.
Acked-by: Nick Piggin <npiggin@suse.de>
Acked-by: Dinakar Guniguntala <dino@in.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Proper parentheses around arguments needed, especially as the macros use
a high-precedence cast operator on the argument.
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Reported by: Pavel Kysilka (Bugzilla Bug 5059)
The intelfb driver does not keep resolution set with fbset after
switching to anot console and back.
Steps to reproduce:
initial options: tty1,tty2 - 1024x768-60
1) tty1 - fbset after booting (1024x768-60)
2) tty1 - fbset 800x600-100
tty1: 800x600-100
3) swith to tty2, swith to tty1
tty1: 1024x768-60 (the same resolution as default from kernel booting)
This bug is caused by intelfb unintentionally destroying info->flags in
set_par(). Therefore the flag, FBINFO_MISC_USEREVENT used to notify
fbcon of a mode change was cleared causing the above problem. This bug
though is not intelfb specific, as other drivers may also be affected.
The fix is to save info->flags in a local variable before calling any
of the driver hooks. A more definitive fix (for post 2.6.13) is to
separate info->flags into one that is set by the driver and another that
is set by core fbdev/fbcon.
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Reported by: Pavel Kysilka (Bugzilla Bug 4738)
modprobe of intelfb results in the following error message:
intelfb: Framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G chi
intelfb: Version 0.9.2
ACPI: PCI Interrupt 0000:00:02.0[A] -> GSI 16 (level, low) -> IRQ 16
allocation failed: out of vmalloc space - use vmalloc=<size> to increase siz
intelfb: Cannot remap FB region.
This will fail if the graphics aperture size is greater than 128 MB.
Fix is to ioremap only from the beginning of graphics aperture to the
end of the used framebuffer memory.
Signed-off-by: Sylvain Meyer <sylvain.meyer@worldonline.fr>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This adds a MOVE_SELF event to inotify. It is sent whenever the inode
you are watching is moved. We need this event so that we can catch
something like this:
- app1:
watch /etc/mtab
- app2:
cp /etc/mtab /tmp/mtab-work
mv /etc/mtab /etc/mtab~
mv /tmp/mtab-work /etc/mtab
app1 still thinks it's watching /etc/mtab but it's actually watching
/etc/mtab~.
Signed-off-by: John McCutchan <ttb@tentacle.dhs.org>
Signed-off-by: Robert Love <rml@novell.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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We are saving the wrong thing in ->last_wd. We want the wd, not the
return value.
Signed-off-by: Robert Love <rml@novell.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This reverts commits
71db63acff69618b3d9d3114bd061938150e146b
[PATCH] increase PCIBIOS_MIN_IO on x86
and
0b2bfb4e7ff61f286676867c3508569bea6fbf7a
ACPI: increase PCIBIOS_MIN_IO on x86
since Lukas Sandströ<lukass@etek.chalmers.se> reports that this breaks
his on-board nvidia audio.
We should re-visit this later. For now we revert the change
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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It introduces a repeatable oops in the driver, which is a bigger problem
than the patch tries to solve. From the original description:
Author: Jamie Lenehan <lenehan@twibble.org>
Date: Thu Mar 3 14:41:40 2005 +0200
[PATCH] dc395x: Fix support for highmem
From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Removes the page_to_virt and maps sg lists dynamically.
This makes the driver work with highmem pages.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Jamie Lenehan <lenehan@twibble.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Fix path name conversion for long filenames when mapchars mount option
was specified at mount time.
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Fix missing entries in search results when very long file names and more
than 50 (or so) of such long search entries in the directory.
FindNext could send corrupt last byte of resume name when resume key was
a few hundred bytes long file name or longer.
Fixes Samba Bug # 2932
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Initialize key object ID in inode so that we don't try to remove the inode
when we fail on some checks even before we manage to allocate something.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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There was a rather silly and embarrassing typo in the sh _syscall6().
For the syscall ABI we have the trapa value specified as 0x10 + number
of arguments, this was being set incorrectly in the _syscall6() case
which ended up causing some problems for users.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This leaves the issue of whether we should deprecate the whole thing (or
if we should check the whole mmap range, for that matter) open. Just do
the minimal fix for now.
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Do not spam syslog each 10 seconds when there is nothing on the wire.
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Remove unused variable
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This fixes a race during initialization with the NAPI softirq
processing by using an RCU approach.
This race was discovered when refill_skbs() was added to
the setup code.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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we could do one thing (see the patch below): i think it would be useful
to fill up the netlogging skb queue straight at initialization time.
Especially if netpoll is used for dumping alone, the system might not be
in a situation to fill up the queue at the point of crash, so better be
a bit more prepared and keep the pipeline filled.
[ I've modified this to be called earlier - mpm ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add limited retry logic to netpoll_send_skb
Each time we attempt to send, decrement our per-device retry counter.
On every successful send, we reset the counter.
We delay 50us between attempts with up to 20000 retries for a total of
1 second. After we've exhausted our retries, subsequent failed
attempts will try only once until reset by success.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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