| Commit message (Collapse) | Author | Age |
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Copy the FPU state to the task's thread_info->fpregs for the VIS emulation
functions to access.
Signed-off-by: Hong H. Pham <hong.pham@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch fixes some bugs in VIS emulation that cause the GCC test
failure
FAIL: gcc.target/sparc/pdist-3.c execution test
for both 32-bit and 64-bit testing on hardware lacking these
instructions. The emulation code for the pdist instruction uses
RS1(insn) for both source registers rs1 and rs2, which is obviously
wrong and leads to the instruction doing nothing (the observed
problem), and further inspection of the code shows that RS1 uses a
shift of 24 and RD a shift of 25, which clearly cannot both be right;
examining SPARC documentation indicates the correct shift for RS1 is
14.
This patch fixes the bug if single-stepping over the affected
instruction in the debugger, but not if the testcase is run
standalone. For that, Wind River has another patch I hope they will
send as a followup to this patch submission.
Signed-off-by: Joseph Myers <joseph@codesourcery.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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bitops_64.h includes the generic one; pretty sure 32 should too.
(Found by using __fls in generic code and breaking sparc defconfig build:
thanks Stephen and linux-next!)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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From: Chris Torek <chris.torek@windriver.com>
>The SPARC64 kernel code for PTRACE_SETFPREGS64 appears to be an exact copy
>of that for PTRACE_GETFPREGS64. This means that gdbserver and native
>64-bit GDB cannot set floating-point registers.
It looks like a simple typo.
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: fix early panic with boot option "nosmp"
x86/oprofile: fix Intel cpu family 6 detection
oprofile: fix CPU unplug panic in ppro_stop()
AMD IOMMU: fix possible race while accessing iommu->need_sync
AMD IOMMU: set device table entry for aliased devices
AMD IOMMU: struct amd_iommu remove padding on 64 bit
x86: fix broken flushing in GART nofullflush path
x86: fix dma_mapping_error for 32bit x86
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Impact: fix boot crash with numcpus=0 on certain systems
Fix early exception in __get_smp_config with nosmp.
Bail out early when there is no MP table.
Reported-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile into x86/urgent
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Alan Jenkins wrote:
> This is on an EeePC 701, /proc/cpuinfo as attached.
>
> Is this expected? Will the next release work?
>
> Thanks, Alan
>
> # opcontrol --setup --no-vmlinux
> cpu_type 'unset' is not valid
> you should upgrade oprofile or force the use of timer mode
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> # opcontrol -v
> opcontrol: oprofile 0.9.4 compiled on Nov 29 2008 22:44:10
>
> # cat /dev/oprofile/cpu_type
> i386/p6
> # uname -r
> 2.6.28-rc6eeepc
Hi Alan,
Looking at the kernel driver code for oprofile it can return the "i386/p6" for
the cpu_type. However, looking at the user-space oprofile code there isn't the
matching entry in libop/op_cpu_type.c or the events/unit_mask files in
events/i386 directory.
The Intel AP-485 says this is a "Intel Pentium M processor model D". Seems like
the oprofile kernel driver should be identifying the processor as "i386/p6_mobile"
The driver identification code doesn't look quite right in nmi_init.c
http://git.kernel.org/?p=linux/kernel/git/sfr/linux-next.git;a=blob;f=arch/x86/oprofile/nmi_int.c;h=022cd41ea9b4106e5884277096e80e9088a7c7a9;hb=HEAD
has:
409 case 10 ... 13:
410 *cpu_type = "i386/p6";
411 break;
Referring to the Intel AP-485:
case 10 and 11 should produce "i386/piii"
case 13 should produce "i386/p6_mobile"
I didn't see anything for case 12.
Something like the attached patch. I don't have a celeron machine to verify that
changes in this area of the kernel fix thing.
-Will
Signed-off-by: William Cohen <wcohen@redhat.com>
Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Acked-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Robert Richter <robert.richter@amd.com>
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If oprofile statically compiled in kernel, a cpu unplug triggers
a panic in ppro_stop(), because a NULL pointer is dereferenced.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Robert Richter <robert.richter@amd.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent
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The access to the iommu->need_sync member needs to be protected by the
iommu->lock. Otherwise this is a possible race condition. Fix it with
this patch.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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In some rare cases a request can arrive an IOMMU with its originial
requestor id even it is aliased. Handle this by setting the device table
entry to the same protection domain for the original and the aliased
requestor id.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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Remove 16 bytes of padding from struct amd_iommu on 64bit builds
reducing its size to 120 bytes, allowing it to span one fewer
cachelines.
Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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Impact: remove stale IOTLB entries
In the non-default nofullflush case the GART is only flushed when
next_bit wraps around. But it can happen that an unmap operation unmaps
memory which is behind the current next_bit location. If these addresses
are reused it may result in stale GART IO/TLB entries. Fix this by
setting the GART next_bit always behind an unmapped location.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Devices like b44 ethernet can't dma from addresses above 1GB. The driver
handles this cases by falling back to GFP_DMA allocation. But for detecting
the problem it needs to get an indication from dma_mapping_error.
The bug is triggered by using a VMSPLIT option of 2G/2G.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched: don't export sched_mc_power_savings in laptops
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Impact: do not expose a control that has no effect
Fix to prevent sched_mc_power_saving from being exported through sysfs
on single-socket systems. (Say multicore single socket (Laptop))
CPU core map of the boot cpu should be equal to possible number
of cpus for single socket system.
This fix has been developed at FOSS.in kernel workout.
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
check_hung_task(): unsigned sysctl_hung_task_warnings cannot be less than 0
documentation: local_ops fix on_each_cpu
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Impact: fix warnings-limit cutoff check for debug feature
unsigned sysctl_hung_task_warnings cannot be less than 0
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: update code example in documentation
* Dr. David Alan Gilbert (dave@treblig.org) wrote:
[...]
> I noticed while looking at something else that the example in
> local_ops.txt still has the 4 operand on_each_cpu in the latest git;
> I don't know the rest of the code around there very well so I thought
> it best to mention it rather than post a patch.
Reported-by: Dr. David Alan Gilbert <dave@treblig.org>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
MIPS: Return ENOSYS from sys32_syscall on 64bit kernels like elsewhere.
MIPS: 64-bit: vmsplice needs to use the compat wrapper for o32 and N32.
MIPS: o32: Fix number of arguments to splice(2).
MIPS: Malta: Consolidate platform device code.
MIPS: IP22, Fulong, Malta: Update defconfigs.
MIPS: Malta: Add back RTC support
MIPS: Fix potential DOS by untrusted user app.
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When the o32 errno was changed to ENOSYS, we forgot to update the code
for 64bit kernels.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The syscall code was assuming splice only takes 4 arguments so no stack
arguments were being copied from the userspace stack to the kernel stack.
As the result splice was likely to fail with EINVAL.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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After adding the RTC platform device to malta-platform.c malta-mtd.c should
get unified with the rest of the platform device code.
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These haven't seen much attention for too long but particularly important
enable RTC_CLASS and CONFIG_RTC_HCTOSYS so the wall clock time is set on
kernel startup.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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With the conversion of MIPS to RTC_LIB the old RTC driver CONFIG_RTC became
unselectable. Fix by setting up a platform device. Also enable
RTC_CLASS so system time gets set from RTC on kernel initialization.
[Ralf: Original patch by Tiejun; polished nice and shiny by me]
Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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On a 64 bit kernel if an o32 syscall was made with a syscall number less
than 4000, we would read the function from outside of the bounds of the
syscall table. This led to non-deterministic behavior including system
crashes.
While we were at it we reworked the 32 bit version as well to use fewer
instructions. Both 32 and 64 bit versions are use the same code now.
Signed-off-by: Vlad Malov <Vlad.Malov@caviumnetworks.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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* 'for-linus' of git://oss.sgi.com/xfs/xfs:
[XFS] Fix hang after disallowed rename across directory quota domains
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When project quota is active and is being used for directory tree
quota control, we disallow rename outside the current directory
tree. This requires a check to be made after all the inodes
involved in the rename are locked. We fail to unlock the inodes
correctly if we disallow the rename when the target is outside the
current directory tree. This results in a hang on the next access
to the inodes involved in failed rename.
Reported-by: Arkadiusz Miskiewicz <arekm@maven.pl>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Tested-by: Arkadiusz Miskiewicz <arekm@maven.pl>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
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Introduce into the MN10300 gdbstub 16550 driver a couple of barrier() calls to
replace the removed volatility of the input/output index variables for the Rx
ring buffer. A previous patch added them into the on-chip serial port driver.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add myself as overall maintainer of the security subsystem (generally,
components under the top-level security directory). This addresses
the lack of an official maintainer for the increasing number of
security projects being incorporated into the kernel.
Signed-off-by: James Morris <jmorris@namei.org>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
block: fix setting of max_segment_size and seg_boundary mask
block: internal dequeue shouldn't start timer
block: set disk->node_id before it's being used
When block layer fails to map iov, it calls bio_unmap_user to undo
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Fix setting of max_segment_size and seg_boundary mask for stacked md/dm
devices.
When stacking devices (LVM over MD over SCSI) some of the request queue
parameters are not set up correctly in some cases by default, namely
max_segment_size and and seg_boundary mask.
If you create MD device over SCSI, these attributes are zeroed.
Problem become when there is over this mapping next device-mapper mapping
- queue attributes are set in DM this way:
request_queue max_segment_size seg_boundary_mask
SCSI 65536 0xffffffff
MD RAID1 0 0
LVM 65536 -1 (64bit)
Unfortunately bio_add_page (resp. bio_phys_segments) calculates number of
physical segments according to these parameters.
During the generic_make_request() is segment cout recalculated and can
increase bio->bi_phys_segments count over the allowed limit. (After
bio_clone() in stack operation.)
Thi is specially problem in CCISS driver, where it produce OOPS here
BUG_ON(creq->nr_phys_segments > MAXSGENTRIES);
(MAXSEGENTRIES is 31 by default.)
Sometimes even this command is enough to cause oops:
dd iflag=direct if=/dev/<vg>/<lv> of=/dev/null bs=128000 count=10
This command generates bios with 250 sectors, allocated in 32 4k-pages
(last page uses only 1024 bytes).
For LVM layer, it allocates bio with 31 segments (still OK for CCISS),
unfortunatelly on lower layer it is recalculated to 32 segments and this
violates CCISS restriction and triggers BUG_ON().
The patch tries to fix it by:
* initializing attributes above in queue request constructor
blk_queue_make_request()
* make sure that blk_queue_stack_limits() inherits setting
(DM uses its own function to set the limits because it
blk_queue_stack_limits() was introduced later. It should probably switch
to use generic stack limit function too.)
* sets the default seg_boundary value in one place (blkdev.h)
* use this mask as default in DM (instead of -1, which differs in 64bit)
Bugs related to this:
https://bugzilla.redhat.com/show_bug.cgi?id=471639
http://bugzilla.kernel.org/show_bug.cgi?id=8672
Signed-off-by: Milan Broz <mbroz@redhat.com>
Reviewed-by: Alasdair G Kergon <agk@redhat.com>
Cc: Neil Brown <neilb@suse.de>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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blkdev_dequeue_request() and elv_dequeue_request() are equivalent and
both start the timeout timer. Barrier code dequeues the original
barrier request but doesn't passes the request itself to lower level
driver, only broken down proxy requests; however, as the original
barrier code goes through the same dequeue path and timeout timer is
started on it. If barrier sequence takes long enough, this timer
expires but the low level driver has no idea about this request and
oops follows.
Timeout timer shouldn't have been started on the original barrier
request as it never goes through actual IO. This patch unexports
elv_dequeue_request(), which has no external user anyway, and makes it
operate on elevator proper w/o adding the timer and make
blkdev_dequeue_request() call elv_dequeue_request() and add timer.
Internal users which don't pass the request to driver - barrier code
and end_that_request_last() - are converted to use
elv_dequeue_request().
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Mike Anderson <andmike@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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disk->node_id will be refered in allocating in disk_expand_part_tbl, so we
should set it before disk->node_id is refered.
Signed-off-by: Cheng Renquan <crquan@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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mapping. Which is good if pages were mapped - but if they were provided
by someone else and just copied then bad things happen - pages are
released once here, and once by caller, leading to user triggerable BUG
at include/linux/mm.h:246.
Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
powerpc/83xx: Fix MCU support merge issue in mpc8349emitx.dts
powerpc: Fix dma_map_sg() cache flushing on non coherent platforms
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Just found the merge issue in 442746989d92afc125040e0f29b33602ad94da99
("powerpc/83xx: Add support for MCU microcontroller in .dts files"):
the commit adds the MCU controller node into the DMA node, which is
wrong because the MCU sits on the I2C bus. Fix this by moving the MCU
node into the I2C controller node.
The original patch[1] was OK though. ;-)
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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On PowerPC 4xx or other non cache-coherent platforms, we lost the
appropriate cache flushing in dma_map_sg() when merging the 32 and
64-bit DMA code (commit 4fc665b88a79a45bae8bbf3a05563c27c7337c3d,
"powerpc: Merge 32 and 64-bit dma code"). This restores it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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* 'for-2.6.28' of git://linux-nfs.org/~bfields/linux:
NLM: client-side nlm_lookup_host() should avoid matching on srcaddr
nfsd: use of unitialized list head on error exit in nfs4recover.c
Add a reference to sunrpc in svc_addsock
nfsd: clean up grace period on early exit
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Since commit c98451bd, the loop in nlm_lookup_host() unconditionally
compares the host's h_srcaddr field to the incoming source address.
For client-side nlm_host entries, both are always AF_UNSPEC, so this
check is unnecessary.
Since commit 781b61a6, which added support for AF_INET6 addresses to
nlm_cmp_addr(), nlm_cmp_addr() now returns FALSE for AF_UNSPEC
addresses, which causes nlm_lookup_host() to create a fresh nlm_host
entry every time it is called on the client.
These extra entries will eventually expire once the server is
unmounted, so the impact of this regression, introduced with lockd
IPv6 support in 2.6.28, should be minor.
We could fix this by adding an arm in nlm_cmp_addr() for AF_UNSPEC
addresses, but really, nlm_lookup_host() shouldn't be matching on the
srcaddr field for client-side nlm_host lookups.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Thanks to Matthew Dodd for this bug report:
A file label issue while running SELinux in MLS mode provoked the
following bug, which is a result of use before init on a 'struct list_head'.
In nfsd4_list_rec_dir() if the call to dentry_open() fails the 'goto
out' skips INIT_LIST_HEAD() which results in the normally improbable
case where list_entry() returns NULL.
Trace follows.
NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
SELinux: Context unconfined_t:object_r:var_lib_nfs_t:s0 is not valid
(left unmapped).
type=1400 audit(1227298063.609:282): avc: denied { read } for
pid=1890 comm="rpc.nfsd" name="v4recovery" dev=dm-0 ino=148726
scontext=system_u:system_r:nfsd_t:s0-s15:c0.c1023
tcontext=system_u:object_r:unlabeled_t:s15:c0.c1023 tclass=dir
BUG: unable to handle kernel NULL pointer dereference at 00000004
IP: [<c050894e>] list_del+0x6/0x60
*pde = 0d9ce067 *pte = 00000000
Oops: 0000 [#1] SMP
Modules linked in: nfsd lockd nfs_acl auth_rpcgss exportfs autofs4
sunrpc ipv6 dm_multipath scsi_dh ppdev parport_pc sg parport floppy
ata_piix pata_acpi ata_generic libata pcnet32 i2c_piix4 mii pcspkr
i2c_core dm_snapshot dm_zero dm_mirror dm_log dm_mod BusLogic sd_mod
scsi_mod crc_t10dif ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd [last
unloaded: microcode]
Pid: 1890, comm: rpc.nfsd Not tainted (2.6.27.5-37.fc9.i686 #1)
EIP: 0060:[<c050894e>] EFLAGS: 00010217 CPU: 0
EIP is at list_del+0x6/0x60
EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: cd99e480
ESI: cf9caed8 EDI: 00000000 EBP: cf9caebc ESP: cf9caeb8
DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process rpc.nfsd (pid: 1890, ti=cf9ca000 task=cf4de580 task.ti=cf9ca000)
Stack: 00000000 cf9caef0 d0a9f139 c0496d04 d0a9f217 fffffff3 00000000
00000000
00000000 00000000 cf32b220 00000000 00000008 00000801 cf9caefc
d0a9f193
00000000 cf9caf08 d0a9b6ea 00000000 cf9caf1c d0a874f2 cf9c3004
00000008
Call Trace:
[<d0a9f139>] ? nfsd4_list_rec_dir+0xf3/0x13a [nfsd]
[<c0496d04>] ? do_path_lookup+0x12d/0x175
[<d0a9f217>] ? load_recdir+0x0/0x26 [nfsd]
[<d0a9f193>] ? nfsd4_recdir_load+0x13/0x34 [nfsd]
[<d0a9b6ea>] ? nfs4_state_start+0x2a/0xc5 [nfsd]
[<d0a874f2>] ? nfsd_svc+0x51/0xff [nfsd]
[<d0a87f2d>] ? write_svc+0x0/0x1e [nfsd]
[<d0a87f48>] ? write_svc+0x1b/0x1e [nfsd]
[<d0a87854>] ? nfsctl_transaction_write+0x3a/0x61 [nfsd]
[<c04b6a4e>] ? sys_nfsservctl+0x116/0x154
[<c04975c1>] ? putname+0x24/0x2f
[<c04975c1>] ? putname+0x24/0x2f
[<c048d49f>] ? do_sys_open+0xad/0xb7
[<c048d337>] ? filp_close+0x50/0x5a
[<c048d4eb>] ? sys_open+0x1e/0x26
[<c0403cca>] ? syscall_call+0x7/0xb
[<c064007b>] ? init_cyrix+0x185/0x490
=======================
Code: 75 e1 8b 53 08 8d 4b 04 8d 46 04 e8 75 00 00 00 8b 53 10 8d 4b 0c
8d 46 0c e8 67 00 00 00 5b 5e 5f 5d c3 90 90 55 89 e5 53 89 c3 <8b> 40
04 8b 00 39 d8 74 16 50 53 68 3e d6 6f c0 6a 30 68 78 d6
EIP: [<c050894e>] list_del+0x6/0x60 SS:ESP 0068:cf9caeb8
---[ end trace a89c4ad091c4ad53 ]---
Cc: Matthew N. Dodd <Matthew.Dodd@spart.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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The svc_addsock function adds transport instances without taking a
reference on the sunrpc.ko module, however, the generic transport
destruction code drops a reference when a transport instance
is destroyed.
Add a try_module_get call to the svc_addsock function for transport
instances added by this function.
Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Tested-by: Jeff Moyer <jmoyer@redhat.com>
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If nfsd was shut down before the grace period ended, we could end up
with a freed object still on grace_list. Thanks to Jeff Moyer for
reporting the resulting list corruption warnings.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Tested-by: Jeff Moyer <jmoyer@redhat.com>
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The code used '&= 0x00002000' when it tried to set the TCO_EN bit, which
obviously didn't set that bit at all, but instead just reset all the
other bits in the SMI_EN register.
This bug seemingly caused various random behavior, with Frans Pop
reporting that X.org just silently hung at startup and Rafael Wysocki
reports the fan spinning with full speed.
See
http://lkml.org/lkml/2008/12/3/178
http://bugzilla.kernel.org/show_bug.cgi?id=12162
The problem seems to have been triggered by "[WATCHDOG] iTCO_wdt :
problem with rebooting on new ICH9 based motherboards" (commit
7cd5b08be3c489df11b559fef210b81133764ad4), but the bogus code existed
before that too (in the "supermicro_old_pre_stop()" function), it just
apparently never showed up due to different logic.
In that commit the broken code got moved around and now gets executed
much more.
Reported-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Frans Pop <elendil@planet.nl>
Cc: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
[WATCHDOG] hpwdt: Fix kdump when using hpwdt
[WATCHDOG] hpwdt: set the mapped BIOS address space as executable
[WATCHDOG] iTCO_wdt: add PCI ID's for ICH9 & ICH10 chipsets
[WATCHDOG] iTCO_wdt : correct status clearing
[WATCHDOG] iTCO_wdt : problem with rebooting on new ICH9 based motherboards
[WATCHDOG] fix mtx1_wdt compilation failure
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When the "hpwdt" module is loaded (even if the /dev/watchdog device is not
opened), then kdump does not work. The panic kernel either does not start at
all or crash in various places.
The problem is that hpwdt_pretimeout is registered with register_die_notifier()
with the highest possible priority. Because it returns NOTIFY_STOP, the
crash_nmi_callback which is also registered with register_die_notifier()
is never executed. This causes the shutdown of other CPUs to fail.
Reverting the order is no option: The crash_nmi_callback executes HLT
and so never returns normally. Because of that, it must be executed as
last notifier, which currently is done.
So, that patch returns NOTIFY_OK to keep the crash_nmi_callback executed.
Signed-off-by: Bernhard Walle <bwalle@suse.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Thomas Mingarelli <thomas.mingarelli@hp.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
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The address provided by the SMBIOS/DMI CRU information is mapped via
ioremap() in the virtual address space. However, since the address is
executed (i.e. call'd), we need to set that pages as executable.
Without that, I get following oops on a HP ProLiant DL385 G2
machine with BIOS from 05/29/2008 when I trigger crashdump:
BUG: unable to handle kernel paging request at ffffc20011090c00
IP: [<ffffc20011090c00>] 0xffffc20011090c00
PGD 12f813067 PUD 7fe6a067 PMD 7effe067 PTE 80000000fffd3173
Oops: 0011 [1] SMP
last sysfs file: /sys/devices/system/cpu/cpu3/cache/index2/shared_cpu_map
CPU 1
Modules linked in: autofs4 ipv6 af_packet cpufreq_conservative cpufreq_userspace
cpufreq_powersave powernow_k8 fuse loop dm_mod rtc_cmos ipmi_si sg rtc_core i2c
_piix4 ipmi_msghandler bnx2 sr_mod container button i2c_core hpilo joydev pcspkr
rtc_lib shpchp hpwdt cdrom pci_hotplug usbhid hid ff_memless ohci_hcd ehci_hcd
uhci_hcd usbcore edd ext3 mbcache jbd fan ide_pci_generic serverworks ide_core p
ata_serverworks pata_acpi cciss ata_generic libata scsi_mod dock thermal process
or thermal_sys hwmon
Supported: Yes
Pid: 0, comm: swapper Not tainted 2.6.27.5-HEAD_20081111100657-default #1
RIP: 0010:[<ffffc20011090c00>] [<ffffc20011090c00>] 0xffffc20011090c00
RSP: 0018:ffff88012f6f9e68 EFLAGS: 00010046
RAX: 0000000000000d02 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88012f6f9e98 R08: 666666666666660a R09: ffffffffa1006fc0
R10: 0000000000000000 R11: ffff88012f6f3ea8 R12: ffffc20011090c00
R13: ffff88012f6f9ee8 R14: 000000000000000e R15: 0000000000000000
FS: 00007ff70b29a6f0(0000) GS:ffff88012f6512c0(0000) knlGS:0000000000000000
CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: ffffc20011090c00 CR3: 0000000000201000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 0, threadinfo ffff88012f6f2000, task ffff88007fa8a1c0)
Stack: ffffffffa0f8502b 0000000000000002 ffffffff80738d50 0000000000000000
0000000000000046 0000000000000046 00000000fffffffe ffffffffa0f852ec
0000000000000000 ffffffff804ad9a6 0000000000000000 0000000000000000
Call Trace:
Inexact backtrace:
<NMI> [<ffffffffa0f8502b>] ? asminline_call+0x2b/0x55 [hpwdt]
[<ffffffffa0f852ec>] hpwdt_pretimeout+0x3c/0xa0 [hpwdt]
[<ffffffff804ad9a6>] ? notifier_call_chain+0x29/0x4c
[<ffffffff802587e4>] ? notify_die+0x2d/0x32
[<ffffffff804abbdc>] ? default_do_nmi+0x53/0x1d9
[<ffffffff804abd90>] ? do_nmi+0x2e/0x43
[<ffffffff804ab552>] ? nmi+0xa2/0xd0
[<ffffffff80221ef9>] ? native_safe_halt+0x2/0x3
<<EOE>> [<ffffffff8021345d>] ? default_idle+0x38/0x54
[<ffffffff8021359a>] ? c1e_idle+0x118/0x11c
[<ffffffff8020b3b5>] ? cpu_idle+0xa9/0xf1
Code: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff <55> 50 e8 00 00 00 00 58 48 2d 07 10 40 00 48 8b e8 58 e9 68 02
RIP [<ffffc20011090c00>] 0xffffc20011090c00
RSP <ffff88012f6f9e68>
CR2: ffffc20011090c00
Kernel panic - not syncing: Fatal exception
Signed-off-by: Bernhard Walle <bwalle@suse.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Thomas Mingarelli <Thomas.Mingarelli@hp.com>
Cc: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Add support for the following I/O controller hubs:
ICH7DH, ICH9M, ICH9M-E, ICH10, ICH10R, ICH10D and ICH10DO.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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