Jack Steiner noticed that duplicate TLB DTC entries do not cause a
linux panic. See discussion:
http://www.gelato.unsw.edu.au/archives/linux-ia64/0307/6108.html
The current TLB recovery code is recovering from the duplicate itr.d
dropins, masking the underlying problem. This change modifies
the MCA recovery code to look for the TLB check signature of the
duplicate TLB entry and panic in that case.
Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
ecryptfs uses a lock_parent() function, which I hope really locks the parents
and is not abused
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The sn console driver was snagged by the use of CONFIG_DEBUG_SHIRQ!
The request_irq() immediate call to the interrupt handler caused
another attempt to lock the port lock - deadlock.
This is a patch to fix that.
Signed-off-by: Patrick Gefre <pfg@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In my previous x86_64 thread fix, I forgot to initialize thread.arch.fs in
arch_prctl. A process calling arch_prctl to set %fs would lose it on the
next context switch.
It also turns out that you can switch to a process which is in the process
of exiting and which has lost its mm. In this case, it's worse than
useless to try to call arch_prctl on the host process.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
IA64 and ARM-OABI are currently using their own version of epoll compat_
code.
An architecture needs epoll_event translation if alignof(u64) in 32 bit
mode is different from alignof(u64) in 64 bit mode. If an architecture
needs epoll_event translation, it must define struct compat_epoll_event in
asm/compat.h and set CONFIG_HAVE_COMPAT_EPOLL_EVENT and use
compat_sys_epoll_ctl and compat_sys_epoll_wait.
All 64 bit architecture should use compat_sys_epoll_pwait.
[sfr: restructure and move to fs/compat.c, remove MIPS version
of compat_sys_epoll_pwait, use __put_user_unaligned]
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[Bluetooth] Fix socket locking in hci_sock_dev_event()
hci_sock_dev_event() uses bh_lock_sock() to lock the socket lock.
This is not deadlock-safe against locking of the same socket lock in
l2cap_connect_cfm() from softirq context. In addition to that,
hci_sock_dev_event() doesn't seem to be called from softirq context,
so it is safe to use lock_sock()/release_sock() instead.
The lockdep warning can be triggered on my T42p simply by switching
the Bluetooth off by the keyboard button.
=================================
[ INFO: inconsistent lock state ]
2.6.21-rc2 #4
---------------------------------
inconsistent {in-softirq-W} -> {softirq-on-W} usage.
khubd/156 [HC0[0]:SC0[0]:HE1:SE1] takes:
(slock-AF_BLUETOOTH){-+..}, at: [<e0ca5520>] hci_sock_dev_event+0xa8/0xc5 [bluetooth]
{in-softirq-W} state was registered at:
[<c012d1db>] mark_lock+0x59/0x414
[<e0cef688>] l2cap_connect_cfm+0x4e/0x11f [l2cap]
[<c012dfd7>] __lock_acquire+0x3e5/0xb99
[<e0cef688>] l2cap_connect_cfm+0x4e/0x11f [l2cap]
[<c012e7f2>] lock_acquire+0x67/0x81
[<e0cef688>] l2cap_connect_cfm+0x4e/0x11f [l2cap]
[<c036ee72>] _spin_lock+0x29/0x34
[<e0cef688>] l2cap_connect_cfm+0x4e/0x11f [l2cap]
[<e0cef688>] l2cap_connect_cfm+0x4e/0x11f [l2cap]
[<e0ca17c3>] hci_send_cmd+0x126/0x14f [bluetooth]
[<e0ca4ce4>] hci_event_packet+0x729/0xebd [bluetooth]
[<e0ca205b>] hci_rx_task+0x2a/0x20f [bluetooth]
[<e0ca209d>] hci_rx_task+0x6c/0x20f [bluetooth]
[<c012d7be>] trace_hardirqs_on+0x10d/0x14e
[<c011ac85>] tasklet_action+0x3d/0x68
[<c011abba>] __do_softirq+0x41/0x92
[<c011ac32>] do_softirq+0x27/0x3d
[<c0105134>] do_IRQ+0x7b/0x8f
[<c0103dec>] common_interrupt+0x24/0x34
[<c0103df6>] common_interrupt+0x2e/0x34
[<c0248e65>] acpi_processor_idle+0x1b3/0x34a
[<c0248e68>] acpi_processor_idle+0x1b6/0x34a
[<c010232b>] cpu_idle+0x39/0x4e
[<c04bab0c>] start_kernel+0x372/0x37a
[<c04ba42b>] unknown_bootoption+0x0/0x202
[<ffffffff>] 0xffffffff
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Also PTRACE_OLDSETOPTIONS should be accepted, as done by kernel/ptrace.c
and forced by binary compatibility. UML/32bit breaks because of this -
since it is wise enough to use PTRACE_OLDSETOPTIONS to be binary compatible
with 2.4 host kernels.
Until 2.6.17 (commit f0f2d6536e) we had:
default:
return sys_ptrace(request, pid, addr, data);
Instead here we have:
case PTRACE_GET_THREAD_AREA:
case ...:
return sys_ptrace(request, pid, addr, data);
default:
return -EINVAL;
This change was a style change - when a case is added, it must be
explicitly tested this way. In this case, not enough testing was done.
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Avoid reusing userspace errno twice - it can be cleared by libc code
everywhere (in particular printk() does clear it in my setup).
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Avoid returning ENOMEM in case of a duplicate IRQ - ENOMEM was saved into err
earlier.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix confusion about call context - comments and code are inconsistent and
plain wrong, my fault.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Since both UML consoles do not use percpu variables, they may be called when
the cpu is still offline, and they may be marked CON_ANYTIME (this is
documented in kernel/printk.c, grep for CON_ANYTIME to find mentions of this).
Works well in testing done with lock debug enabled, should be safe but is not
needed for next release.
This would probably help also stderr_console.c, but this is yet to test.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
os_usr1_signal() is totally unused, os_usr1_process() is used only by TT mode.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Memory allocated by mcast_user_init must be freed in the matching mcast_remove.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When a given host directory is specified to be mounted both in hostfs=path1
and with mount option -o path2, we should give access to path1/path2, but this
does not happen. Fix that in the simpler way.
Also, root_ino can be the empty string, since we use %s/%s as format.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix double free in the error path - when name is assigned into root_inode we
do not own it any more and we must not kfree() it - see patch for details.
Thanks to William Stearns for the initial report.
CC: William Stearns <wstearns@pobox.com>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The sharpsl_pm code depends on some symbols in the APM emulation code.
Add the dependency for now until a better solution can be found.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix locomo backlight conversion error and subsequent compile failure
from commit 599a52d126.
Signed-off-by: RIchard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix tosa compile failure from commit
32f3f49910
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
commit f80dff9da0 missed the needed
definitions within the #elif blocks in
include/asm-arm/arch-lh7a40x/entry-macro.S
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The Product Manager of the cc9p insist on using the correct product names.
Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
If an erase operation fails, the address at which the
failure occurred is returned by the driver. The MTD
partition must adjust this address (by subtracting the
partition offset) before returning to the caller.
This was not happening, which caused JFFS2 to mark
the wrong block bad!
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
The garbage collection thread is strictly an optimisation. Everything it
does would also be done just-in-time in the context of something in
userspace trying to access the file system.
Sometimes, however, it's a pessimisation. Especially during early boot
when it's checksumming nodes and scanning inodes which are shortly going
to be pulled in by read_inode anyway. We end up building the rbtree of
node coverage twice for the same inode.
By switching to yield() instead of cond_resched() in the main loop, we
observe boot times on the OLPC system going down from about 100 seconds to
60.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Replace the apparently misspelled preprocessor variable
"MTD_NAND_DISKONCHIP_BBTWRITE" with the correct form
"CONFIG_MTD_NAND_DISKONCHIP_BBTWRITE".
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
The type of a resource could be 32 or 64bit depending upon platform or
option so cast it explicitly.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
The files cfi_cmdset_0002.c and cfi_cmdset_0020.c do not initialize their
wait queues like is done in cfi_cmdset_0001.c. This causes an oops when
the wait queue is accessed. I have copied the code from cfi_cmdset_0001.c
that is pertinent to initialization of the wait queue.
Signed-off-by: Vijay Sampath <vsampath@gmail.com>
Acked-by: Joern Engel <joern@lazybastard.org>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Add checking for closed ROM window on Intel ESB2 Southbridge.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
For the case when nand_write_page fail with -EIO for the first page in an
eraseblock, jffs2_wbuf_recover ends up producing a BUG in jffs2_block_refile
as jeb->first_node is not yet set up (it's set up later in jffs2_wbuf_recover).
This BUG is not really a bug; it's just jffs2_wbuf_recover calling
jffs2_block_refile with the wrong second parameter.
This patch takes care of this situation.
Signed-off-by: Vitaly Wool <vwool@ru.mvista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
During the MTD rework the oobavail parameter of mtd_info structure has become
private. This is not quite correct in terms of integrity and logic. If we have
means to write to OOB area, then we'd like to know upfront how many bytes out
of OOB are spare per page to be able to adapt to specific cases.
The patch inlined adds the public oobavail parameter.
Signed-off-by: Vitaly Wool <vwool@ru.mvista.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This is a workaround to handle a BIOS bug where the
programmer exchanged the name and index fields of
a _PRT entry. Apparently this BIOS error does not
confuse Windows and thus it lurks in the field
on various machines.
boot with "acpi=strict" to disable this workaround
http://bugzilla.kernel.org/show_bug.cgi?id=6859
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
The root cause of this bug shows that this machine
could not possibly run an ACPI-aware OS without a
model specific workaround.
http://bugzilla.kernel.org/show_bug.cgi?id=5966
Signed-off-by: Len Brown <len.brown@intel.com>
Fix broken node manipulating code, and clarify inaccurate comment.
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Do not assume that AUX_LOOP command is broken unless it
completes successfully but returns wrong (unexpected) data.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
In the bcm43xx interrupt handler, sanity checks are wrongly done before the
verification that the interrupt is for the bcm43xx.
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The frequency to channel routine in bcm43xx requires that the frequency
be in MHz, but that condition is not always met. This patch does the
necessary conversion.
Signed-off-by: Joerg Sommer <joerg@alea.gnuu.de>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
There are three errors in the transcription of the latest revision to the
B6PHY init specifications.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[BRIDGE]: adding new device to bridge should enable if up
[IPV6]: Do not set IF_READY if device is down
[IPSEC]: xfrm audit hook misplaced in pfkey_delete and xfrm_del_sa
[IPSEC]: Add xfrm policy change auditing to pfkey_spdget
[IPSEC]: xfrm_policy delete security check misplaced
[CONNECTOR]: Bugfix for cn_call_callback()
[DCCP]: Revert patch which disables bidirectional mode
[IPV6]: Handle np->opt being NULL in ipv6_getsockopt_sticky().
[UDP]: Reread uh pointer after pskb_trim
[NETFILTER]: nfnetlink_log: fix crash on bridged packet
[NETFILTER]: nfnetlink_log: zero-terminate prefix
[NETFILTER]: nf_conntrack_ipv6: fix incorrect classification of IPv6 fragments as ESTABLISHED
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] fsys_getcpu for IA64
[IA64] remove duplicate declaration of efi_initialize_iomem_resources
[IA64] Pick highest possible saved_max_pfn for crash_dump
[IA64] fix NULL pointer in ia64/irq_chip-mask/unmask function
CC arch/mips/arc/init.o
arch/mips/arc/init.c: In function 'prom_init':
arch/mips/arc/init.c:27: warning: ISO C90 forbids mixed declarations and code
arch/mips/arc/init.c:35: warning: format ‘%08lx’ expects type ‘long unsigned int’, but argument 2 has type 'ULONG'
arch/mips/arc/init.c:28: warning: unused variable 'c'
arch/mips/arc/init.c:27: warning: unused variable ‘cnt’
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
o Fix use of uninitialized variable sec.
o Make the RTC_ALM_SET ioctl return -EINVAL for non-zero seconds - the
DS1286 has no second field for the alarm time.
o Replace the obscure BIN_TO_BCD macro with BIN2BCD.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
On 1.6GHz Montectio Tiger4, the following performance data is measured with
kernel built with defconfig which has NUMA configured:
Fastest sys_getcpu: 502 itc counts.
Fastest fsys_getcpu: 28 itc counts.
fsys_getcpu performance is largly impacted by whether data (node_to_cpu_map
etc) is in cache. It can take fsys_getcpu up to ~150 itc counts in cold
cache case.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
efi_initialize_iomem_resources() is declared in both include/linux/efi.h
and arch/ia64/kernel/setup.c. This patch removes the latter.
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Berhhard Walle noted that on his HP rx8640 he ended up with saved_max_pfn
smaller than the highest address of system ram in /proc/iomem and proposed
a patch to base the address on the unrounded and unfiltered EFI memory
map address. Simon Horman and Magnus Damm suggested that the whole test
be moved earlier in the function. This is the combination of both of
these patches.
Signed-off-by: Tony Luck <tony.luck@intel.com>
One change introduced by the workqueue removal patch is that adding an
interface that is up to a bridge which is also up does not ever call
br_stp_enable_port(), leaving the port in DISABLED state until we do
ifconfig down and up or link events occur.
The following patch to the br_add_if function fixes it.
This is a regression introduced in 2.6.21.
Submitted-by: Aji_Srinivas@emc.com
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russ Anderson