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git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/core
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The ftrace_dump_on_oops kernel parameter, sysctl and sysrq let one
dump every cpu buffers when an oops or panic happens.
It's nice when you have few cpus but it may take ages if have many,
plus you miss the real origin of the problem in all the cpu traces.
Sometimes, all you need is to dump the cpu buffer that triggered the
opps, most of the time it is our main interest.
This patch modifies ftrace_dump_on_oops to handle this choice.
The ftrace_dump_on_oops kernel parameter, when it comes alone, has
the same behaviour than before. But ftrace_dump_on_oops=orig_cpu
will only dump the buffer of the cpu that oops'ed.
Similarly, sysctl kernel.ftrace_dump_on_oops=1 and
echo 1 > /proc/sys/kernel/ftrace_dump_on_oops keep their previous
behaviour. But setting 2 jumps into cpu origin dump mode.
v2: Fix double setup
v3: Fix spelling issues reported by Randy Dunlap
v4: Also update __ftrace_dump in the selftests
Signed-off-by: Frederic Weisbecker <[email protected]>
Acked-by: David S. Miller <[email protected]>
Acked-by: Steven Rostedt <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Li Zefan <[email protected]>
Cc: Lai Jiangshan <[email protected]>
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Merge reason: pick up latest -rc's.
Signed-off-by: Ingo Molnar <[email protected]>
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The recent anon_vma fixes cause many anonymous pages to end up
in the parent process anon_vma, even when the page is exclusively
owned by the current process.
Adding exclusively owned anonymous pages to the top anon_vma
reduces rmap scanning overhead, especially in workloads with
forking servers.
This patch adds a parameter to __page_set_anon_rmap that can
be used to indicate whether or not the added page is exclusively
owned by the current process.
Pages added through page_add_new_anon_rmap are exclusively
owned by the current process, and can be added to the top
anon_vma.
Pages added through page_add_anon_rmap can be either shared
or exclusively owned, so we do the conservative thing and
add it to the oldest anon_vma.
A next step would be to add the exclusive parameter to
page_add_anon_rmap, to be used from functions where we do
know for sure whether a page is exclusively owned.
Signed-off-by: Rik van Riel <[email protected]>
Reviewed-by: Johannes Weiner <[email protected]>
Lightly-tested-by: Borislav Petkov <[email protected]>
Reviewed-by: Minchan Kim <[email protected]>
[ Edited to look nicer - Linus ]
Signed-off-by: Linus Torvalds <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6:
eCryptfs: Turn lower lookup error messages into debug messages
eCryptfs: Copy lower directory inode times and size on link
ecryptfs: fix use with tmpfs by removing d_drop from ecryptfs_destroy_inode
ecryptfs: fix error code for missing xattrs in lower fs
eCryptfs: Decrypt symlink target for stat size
eCryptfs: Strip metadata in xattr flag in encrypted view
eCryptfs: Clear buffer before reading in metadata xattr
eCryptfs: Rename ecryptfs_crypt_stat.num_header_bytes_at_front
eCryptfs: Fix metadata in xattr feature regression
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Vaugue warnings about ENAMETOOLONG errors when looking up an encrypted
file name have caused many users to become concerned about their data.
Since this is a rather harmless condition, I'm moving this warning to
only be printed when the ecryptfs_verbosity module param is 1.
Signed-off-by: Tyler Hicks <[email protected]>
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The timestamps and size of a lower inode involved in a link() call was
being copied to the upper parent inode. Instead, we should be
copying lower parent inode's timestamps and size to the upper parent
inode. I discovered this bug using the POSIX test suite at Tuxera.
Signed-off-by: Tyler Hicks <[email protected]>
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Since tmpfs has no persistent storage, it pins all its dentries in memory
so they have d_count=1 when other file systems would have d_count=0.
->lookup is only used to create new dentries. If the caller doesn't
instantiate it, it's freed immediately at dput(). ->readdir reads
directly from the dcache and depends on the dentries being hashed.
When an ecryptfs mount is mounted, it associates the lower file and dentry
with the ecryptfs files as they're accessed. When it's umounted and
destroys all the in-memory ecryptfs inodes, it fput's the lower_files and
d_drop's the lower_dentries. Commit 4981e081 added this and a d_delete in
2008 and several months later commit caeeeecf removed the d_delete. I
believe the d_drop() needs to be removed as well.
The d_drop effectively hides any file that has been accessed via ecryptfs
from the underlying tmpfs since it depends on it being hashed for it to
be accessible. I've removed the d_drop on my development node and see no
ill effects with basic testing on both tmpfs and persistent storage.
As a side effect, after ecryptfs d_drops the dentries on tmpfs, tmpfs
BUGs on umount. This is due to the dentries being unhashed.
tmpfs->kill_sb is kill_litter_super which calls d_genocide to drop
the reference pinning the dentry. It skips unhashed and negative dentries,
but shrink_dcache_for_umount_subtree doesn't. Since those dentries
still have an elevated d_count, we get a BUG().
This patch removes the d_drop call and fixes both issues.
This issue was reported at:
https://bugzilla.novell.com/show_bug.cgi?id=567887
Reported-by: Árpád Bíró <[email protected]>
Signed-off-by: Jeff Mahoney <[email protected]>
Cc: Dustin Kirkland <[email protected]>
Cc: [email protected]
Signed-off-by: Tyler Hicks <[email protected]>
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If the lower file system driver has extended attributes disabled,
ecryptfs' own access functions return -ENOSYS instead of -EOPNOTSUPP.
This breaks execution of programs in the ecryptfs mount, since the
kernel expects the latter error when checking for security
capabilities in xattrs.
Signed-off-by: Christian Pulvermacher <[email protected]>
Cc: [email protected]
Signed-off-by: Tyler Hicks <[email protected]>
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Create a getattr handler for eCryptfs symlinks that is capable of
reading the lower target and decrypting its path. Prior to this patch,
a stat's st_size field would represent the strlen of the encrypted path,
while readlink() would return the strlen of the decrypted path. This
could lead to confusion in some userspace applications, since the two
values should be equal.
https://bugs.launchpad.net/bugs/524919
Reported-by: Loïc Minier <[email protected]>
Cc: [email protected]
Signed-off-by: Tyler Hicks <[email protected]>
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Commit b91ecb00 ("gigaset: include cleanup cleanup") removed an implicit
sched.h inclusion that came in via slab.h, and caused various compile
problems as a result.
This should fix it.
Reported-by: Ingo Molnar <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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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:
rcu: Make RCU lockdep check the lockdep_recursion variable
rcu: Update docs for rcu_access_pointer and rcu_dereference_protected
rcu: Better explain the condition parameter of rcu_dereference_check()
rcu: Add rcu_access_pointer and rcu_dereference_protected
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
gigaset: include cleanup cleanup
packet : remove init_net restriction
WAN: flush tx_queue in hdlc_ppp to prevent panic on rmmod hw_driver.
ip: Fix ip_dev_loopback_xmit()
net: dev_pick_tx() fix
fib: suppress lockdep-RCU false positive in FIB trie.
tun: orphan an skb on tx
forcedeth: fix tx limit2 flag check
iwlwifi: work around bogus active chains detection
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/radeon/kms: add FireMV 2400 PCI ID.
drm/radeon/kms: allow R500 regs VAP_ALT_NUM_VERTICES and VAP_INDEX_OFFSET
drivers/gpu/radeon: Add MSPOS regs to safe list.
drm/radeon/kms: disable the tv encoder when tv/cv is not in use
drm/radeon/kms: adjust pll settings for tv
drm/radeon/kms: fix tv dac conflict resolver
drm/radeon/kms/evergreen: don't enable hdmi audio stuff
drm/radeon/kms/atom: fix dual-link DVI on DCE3.2/4.0
drm/radeon/kms: fix rs600 tlb flush
drm/radeon/kms: print GPU family and device id when loading
drm/radeon/kms: fix calculation of mipmapped 3D texture sizes
drm/radeon/kms: only change mode when coherent value changes.
drm/radeon/kms: more atom parser fixes (v2)
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* master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: 5974/1: arm/mach-at91 Makefile: remove two blanks.
ARM: 6052/1: kdump: make kexec work in interrupt context
ARM: 6051/1: VFP: preserve the HW context when calling signal handlers
ARM: 6050/1: VFP: fix the SMP versions of vfp_{sync,flush}_hwstate
ARM: 6007/1: fix highmem with VIPT cache and DMA
ARM: 5975/1: AT91 slow-clock suspend: don't wait when turning PLLs off
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This is an M24/X600 chip.
From RH# 581927
cc: [email protected]
Signed-off-by: Dave Airlie <[email protected]>
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The lockdep facility temporarily disables lockdep checking by
incrementing the current->lockdep_recursion variable. Such
disabling happens in NMIs and in other situations where lockdep
might expect to recurse on itself.
This patch therefore checks current->lockdep_recursion, disabling RCU
lockdep splats when this variable is non-zero. In addition, this patch
removes the "likely()", as suggested by Lai Jiangshan.
Reported-by: Frederic Weisbecker <[email protected]>
Reported-by: David Miller <[email protected]>
Tested-by: Frederic Weisbecker <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
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[airlied: fix V_A_N_V to not be safe and fix check to make sure only r500
- bump userspace version]
Signed-off-by: Marek Olšák <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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Permits MSAA and D3D-style rasterization.
[airlied: add rs600]
Signed-off-by: Corbin Simpson <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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Switching between TV and VGA caused VGA to break on some systems
since the TV encoder was left enabled when VGA was used.
fixes fdo bug 25520.
Signed-off-by: Alex Deucher <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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May fix fdo bug 26582.
Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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On systems with the tv dac shared between DVI and TV,
we can only use the dac for one of the connectors.
However, when using a digital monitor on the DVI port,
you can use the dac for the TV connector just fine.
Check the use_digital status when resolving the conflict.
Fixes fdo bug 27649, possibly others.
Signed-off-by: Alex Deucher <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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Got broken during the evergreen merge.
Fixes fdo bug 27001.
Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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Typo in in flush leaded to no flush of the RS600 tlb which
ultimately leaded to massive system ram corruption, with
this patch everythings seems to work properly.
Signed-off-by: Jerome Glisse <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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This will help figuring out GPU when looking at bugs log.
Signed-off-by: Jerome Glisse <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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Commit 5a0e3ad causes slab.h to be included twice in many of the
Gigaset driver's source files, first via the common include file
gigaset.h and then a second time directly. Drop the spares, and
use the opportunity to clean up a few more similar cases.
Impact: cleanup, no functional change
Signed-off-by: Tilman Schmidt <[email protected]>
CC: Tejun Heo <[email protected]>
Acked-by: Tejun Heo <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel:
drm/i915: Ignore LVDS EDID when it is unavailabe or invalid
drm/i915: Add no_lvds entry for the Clientron U800
drm/i915: Rename many remaining uses of "output" to encoder or connector.
drm/i915: Rename intel_output to intel_encoder.
agp/intel: intel_845_driver is an agp driver!
drm/i915: introduce to_intel_bo helper
drm/i915: Disable FBC on 915GM and 945GM.
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI: EC: Limit burst to 64 bits
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* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: don't warn on EAGAIN in inode reclaim
xfs: ensure that sync updates the log tail correctly
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The af_packet protocol is used by Perl to do ioctls as reported by
Stephane Riviere:
"Net::RawIP relies on SIOCGIFADDR et SIOCGIFHWADDR to get the IP and MAC
addresses of the network interface."
But in a new network namespace these ioctl fail because it is disabled for
a namespace different from the init_net_ns.
These two lines should not be there as af_inet and af_packet are
namespace aware since a long time now. I suppose we forget to remove these
lines because we sent the af_packet first, before af_inet was supported.
Signed-off-by: Daniel Lezcano <[email protected]>
Reported-by: Stephane Riviere <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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tx_queue is used as a temporary queue when not allowed to queue skb
directly to the hw device driver (which may sleep). Most paths flush
it before returning, but ppp_start() currently cannot. Make sure we
don't leave skbs pointing to a non-existent device.
Thanks to Michael Barkowski for reporting this problem.
Signed-off-by: Krzysztof Hałasa <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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access_bit_width field is u8 in ACPICA, thus 256 value written to it
becomes 0, causing divide by zero later.
Proper fix would be to remove access_bit_width at all, just because
we already have access_byte_width, which is access_bit_width / 8.
Limit access width to 64 bit for now.
https://bugzilla.kernel.org/show_bug.cgi?id=15749
fixes regression caused by the fix for:
https://bugzilla.kernel.org/show_bug.cgi?id=14667
Signed-off-by: Alexey Starikovskiy <[email protected]>
Signed-off-by: Len Brown <[email protected]>
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Any inode reclaim flush that returns EAGAIN will result in the inode
reclaim being attempted again later. There is no need to issue a
warning into the logs about this situation.
Signed-off-by: Dave Chinner <[email protected]>
Reviewed-by: Alex Elder <[email protected]>
Signed-off-by: Alex Elder <[email protected]>
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Updates to the VFS layer removed an extra ->sync_fs call into the
filesystem during the sync process (from the quota code).
Unfortunately the sync code was unknowingly relying on this call to
make sure metadata buffers were flushed via a xfs_buftarg_flush()
call to move the tail of the log forward in memory before the final
transactions of the sync process were issued.
As a result, the old code would write a very recent log tail value
to the log by the end of the sync process, and so a subsequent crash
would leave nothing for log recovery to do. Hence in qa test 182,
log recovery only replayed a small handle for inode fsync
transactions in this case.
However, with the removal of the extra ->sync_fs call, the log tail
was now not moved forward with the inode fsync transactions near the
end of the sync procese the first (and only) buftarg flush occurred
after these transactions went to disk. The result is that log
recovery now sees a large number of transactions for metadata that
is already on disk.
This usually isn't a problem, but when the transactions include
inode chunk allocation, the inode create transactions and all
subsequent changes are replayed as we cannt rely on what is on disk
is valid. As a result, if the inode was written and contains
unlogged changes, the unlogged changes are lost, thereby violating
sync semantics.
The fix is to always issue a transaction after the buftarg flush
occurs is the log iѕ not idle or covered. This results in a dummy
transaction being written that contains the up-to-date log tail
value, which will be very recent. Indeed, it will be at least as
recent as the old code would have left on disk, so log recovery
will behave exactly as it used to in this situation.
Signed-off-by: Dave Chinner <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Alex Elder <[email protected]>
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* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
[WATCHDOG] max63xx driver depends on ioremap()
[WATCHDOG] max63xx: be careful when disabling the watchdog
[WATCHDOG] fixed book E watchdog period register mask.
[WATCHDOG] omap4: Fix WDT Kconfig
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ASoC: imx-ssi: do not call hrtimer_disable in trigger function
ALSA: hda - Add position_fix quirk for Biostar mobo
ALSA: hda - add a quirk for Clevo M570U laptop
ASoC: imx-ssi: increase minimum periods to 4
ALSA: hda - Avoid invalid "Independent HP" control for VIA codecs
ALSA: hda - Fix control element allocations in VIA codec parser
ALSA: aaci - Fix alignment faults on ARM Cortex introduced by commit 29a4f2d3
ALSA: hda - Add fix-up for Sony VAIO with ALC269
ALSA: hda - Enhance fix-up table for Realtek codecs
ALSA: usb - Fix Oops after usb-midi disconnection
ALSA: hda - Fix initial capture source connections of ALC880/260
ALSA: hda - Fix setup for ALC269vb amic and dmic models
ALSA: hda - Fix auto-parser of ALC269vb for HP pin NID 0x21
ASoC: imx-ssi: Use a hrtimer in FIQ mode
ASoC: imx-pcm-dma-mx2: restart DMA after an error
ASoC: imx-ssi: honor IMX_SSI_DMA flag
ASoC: wm2000: remove unused #include <linux/version.h>
ALSA: hda: Add support for Medion WIM2160
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Correct fix for the "ioremap() causes build failure on S390" should have been
a dependancy on HAS_IOMEM. So we add this dependancy also (and leave the driver
in the ARM section for now).
Signed-off-by: Geert Uytterhoeven <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>
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When shutting down the watchdog timer, special care must be taken
not to overwrite other bits in the register, as it may be shared
with other peripherals.
For example, on the Arcom Vulcan, the register is shared between
the watchdog and the PCI reset line...
Signed-off-by: Marc Zyngier <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>
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A previous fix changed the WDTP function to use the period directly,
rather than subtracting from 63. However the mask generation was
not changed, so the mask was coming out as 0. This patch fixes it.
Signed-off-by: Luuk Paulussen <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>
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This patch allows Watchdog timer to be selected for OMAP4 by fixing
Kconfig entry
Signed-off-by: Santosh Shilimkar <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
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Eric Paris got following trace with a linux-next kernel
[ 14.203970] BUG: using smp_processor_id() in preemptible [00000000]
code: avahi-daemon/2093
[ 14.204025] caller is netif_rx+0xfa/0x110
[ 14.204035] Call Trace:
[ 14.204064] [<ffffffff81278fe5>] debug_smp_processor_id+0x105/0x110
[ 14.204070] [<ffffffff8142163a>] netif_rx+0xfa/0x110
[ 14.204090] [<ffffffff8145b631>] ip_dev_loopback_xmit+0x71/0xa0
[ 14.204095] [<ffffffff8145b892>] ip_mc_output+0x192/0x2c0
[ 14.204099] [<ffffffff8145d610>] ip_local_out+0x20/0x30
[ 14.204105] [<ffffffff8145d8ad>] ip_push_pending_frames+0x28d/0x3d0
[ 14.204119] [<ffffffff8147f1cc>] udp_push_pending_frames+0x14c/0x400
[ 14.204125] [<ffffffff814803fc>] udp_sendmsg+0x39c/0x790
[ 14.204137] [<ffffffff814891d5>] inet_sendmsg+0x45/0x80
[ 14.204149] [<ffffffff8140af91>] sock_sendmsg+0xf1/0x110
[ 14.204189] [<ffffffff8140dc6c>] sys_sendmsg+0x20c/0x380
[ 14.204233] [<ffffffff8100ad82>] system_call_fastpath+0x16/0x1b
While current linux-2.6 kernel doesnt emit this warning, bug is latent
and might cause unexpected failures.
ip_dev_loopback_xmit() runs in process context, preemption enabled, so
must call netif_rx_ni() instead of netif_rx(), to make sure that we
process pending software interrupt.
Same change for ip6_dev_loopback_xmit()
Reported-by: Eric Paris <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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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/gart: Disable GART explicitly before initialization
dma-debug: Cleanup for copy-loop in filter_write()
x86/amd-iommu: Remove obsolete parameter documentation
x86/amd-iommu: use for_each_pci_dev
Revert "x86: disable IOMMUs on kernel crash"
x86/amd-iommu: warn when issuing command to uninitialized cmd buffer
x86/amd-iommu: enable iommu before attaching devices
x86/amd-iommu: Use helper function to destroy domain
x86/amd-iommu: Report errors in acpi parsing functions upstream
x86/amd-iommu: Pt mode fix for domain_destroy
x86/amd-iommu: Protect IOMMU-API map/unmap path
x86/amd-iommu: Remove double NULL check in check_device
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: cdev: change license of exported header files to MIT license
firewire: cdev: comment fixlet
firewire: cdev: iso packet documentation
firewire: cdev: fix information leak
firewire: cdev: require quadlet-aligned headers for transmit packets
firewire: cdev: disallow receive packets without header
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