Replace BUG_ON() with WARN_ON_ONCE() - rpc_run_bc_task calls rpc_init_task()
then increments the tk_count, so this is a simple sanity check that
if hit once would hit every time this code path is executed.
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Print a KERN_INFO message before rpc_d_lookup_sb returns NULL, like
other error paths in that function.
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
- Offset bound checks are done in the NFS client code.
- So are filehandle size checks
- The cookie length is a constant
- The utsname()->nodename is already bounded
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
...and ensure that we set the return value for nfs_page_async_flush()
to zero! (Reported-by: Dros Adamson)
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Convert the ones that are not trivial to check into WARN_ON_ONCE().
Remove checks for things such as NFS2_MAXPATHLEN, which are trivially
done by the caller.
Add a comment to the case of nfs3_xdr_enc_setacl3args. What is being
done there is just wrong...
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
rpc_shutdown_client should never be called from a workqueue context.
If it is, it could deadlock looping forever trying to kill tasks that are
assigned to the same kworker thread (and will never run rpc_exit_task).
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
- Fix a bunch of deadlock situations:
* State recovery can deadlock if we fail to release sequence ids before
scheduling the recovery thread.
* Calling deactivate_super() from an RPC workqueue thread can deadlock
because of the call to rpc_shutdown_client.
- Display the device name correctly in /proc/*/mounts
- Fix a number of incorrect error return values:
* When NFSv3 mounts fail due to a timeout.
* On NFSv4.1 backchannel setup failure
* On NFSv4 open access checks
- pnfs_find_alloc_layout() must check the layout pointer for NULL
- Fix a regression in the legacy DNS resolved
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Merge tag 'nfs-for-3.7-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
- Fix a bunch of deadlock situations:
* State recovery can deadlock if we fail to release sequence ids
before scheduling the recovery thread.
* Calling deactivate_super() from an RPC workqueue thread can
deadlock because of the call to rpc_shutdown_client.
- Display the device name correctly in /proc/*/mounts
- Fix a number of incorrect error return values:
* When NFSv3 mounts fail due to a timeout.
* On NFSv4.1 backchannel setup failure
* On NFSv4 open access checks
- pnfs_find_alloc_layout() must check the layout pointer for NULL
- Fix a regression in the legacy DNS resolved
* tag 'nfs-for-3.7-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFS4: nfs4_opendata_access should return errno
NFSv4: Initialise the NFSv4.1 slot table highest_used_slotid correctly
SUNRPC: return proper errno from backchannel_rqst
NFS: add nfs_sb_deactive_async to avoid deadlock
nfs: Show original device name verbatim in /proc/*/mount{s,info}
nfsv3: Make v3 mounts fail with ETIMEDOUTs instead EIO on mountd timeouts
nfs: Check whether a layout pointer is NULL before free it
NFS: fix bug in legacy DNS resolver.
NFSv4: nfs4_locku_done must release the sequence id
NFSv4.1: We must release the sequence id when we fail to get a session slot
NFS: Wait for session recovery to finish before returning
Pull thermal management & ACPI update from Zhang Rui,
Ho humm. Normally these things go through Len. But it's just three
small fixes, I guess I can pull directly too.
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
exynos4_tmu_driver_ids should be exynos_tmu_driver_ids.
ACPI video: Ignore errors after _DOD evaluation.
thermal: solve compilation errors in rcar_thermal
Pull i2c embedded fixes from Wolfram Sang:
"Two patches are usual stuff.
The bigger patch is needed to correct a wrong decision made in this
merge window. We hoped to get the PIOQUEUE mode in the mxs driver
working with DMA, but it turned out to be too broken (leading to data
loss), so we now think it is best to remove it entirely and work only
with DMA now. The patch should be in 3.7. IMO, so users never get
the chance to use both modes in parallel."
* 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux:
i2c: tegra: set irq name as device name
i2c-nomadik: Fixup clock handling
i2c: mxs: remove broken PIOQUEUE support
Pull drm fixes from Dave Airlie:
"Scattered selection of fixes:
- radeon: load detect fixes from SuSE/AMD
- intel: misc i830, sdvo regression, vesafb kickoff ums fix
- exynos: maintainers entry update + fixes
- udl: fix stride scanout issue
it's slightly bigger than I'd probably like, but nothing looked
dangerous enough to hold off on."
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/udl: fix stride issues scanning out stride != width*bpp
drm/radeon: add load detection support for ext DAC on R200 (v2)
DRM/radeon: For single CRTC GPUs move handling of CRTC_CRT_ON to crtc_dpms().
DRM/Radeon: Fix TV DAC Load Detection for single CRTC chips.
DRM/Radeon: Clean up code in TV DAC load detection.
drm/radeon: fix ATPX function documentation
drivers/gpu/drm/radeon/evergreen_cs.c: Remove unnecessary semicolon
DRM/Radeon: On DVI-I use Load Detection when EDID is bogus.
DRM/Radeon: Fix primary DAC Load Detection for RV100 chips.
DRM/Radeon: Fix Load Detection on legacy primary DAC.
drm: exynos: removed warning due to missing typecast for mixer driver data
drm/exynos: add support for ARCH_MULTIPLATFORM
MAINTAINERS: Add git repository for Exynos DRM
drm/exynos: fix display on issue
drm/i915: Only kick out vesafb if we takeover the fbcon with KMS
drm/i915: be less verbose about inability to provide vendor backlight
drm/i915: clear the entire sdvo infoframe buffer
drm/i915: VGA needs to be on pipe A on i830M
drm/i915: fix overlay on i830M
Pull networking fixes from David Miller:
"First post-Sandy pull request"
1) Fix antenna gain handling and initialization of chan->max_reg_power
in wireless, from Felix Fietkau.
2) Fix nexthop handling in H.232 conntrack helper, from Julian
Anastasov.
3) Only process 80211 mesh config header in certain kinds of frames,
from Javier Cardona.
4) 80211 management frame header length needs to be validated, from
Johannes Berg.
5) Don't access free'd SKBs in ath9k driver, from Felix Fietkay.
6) Test for permanent state correctly in VXLAN driver, from Stephen
Hemminger.
7) BNX2X bug fixes from Yaniv Rosner and Dmitry Kravkov.
8) Fix off by one errors in bonding, from Nikolay ALeksandrov.
9) Fix divide by zero in TCP-Illinois congestion control. From Jesper
Dangaard Brouer.
10) TCP metrics code says "Yo dawg, I heard you like sizeof, so I did a
sizeof of a sizeof, so you can size your size" Fix from Julian
Anastasov.
11) Several drivers do mdiobus_free without first doing an
mdiobus_unregister leading to stray pointer references. Fix from
Peter Senna Tschudin.
12) Fix OOPS in l2tp_eth_create() error path, it's another danling
pointer kinda situation. Fix from Tom Parkin.
13) Hardware driven by the vmxnet driver can't handle larger than 16K
fragments, so split them up when necessary. From Eric Dumazet.
14) Handle zero length data length in tcp_send_rcvq() properly. Fix
from Pavel Emelyanov.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (38 commits)
tcp-repair: Handle zero-length data put in rcv queue
vmxnet3: must split too big fragments
l2tp: fix oops in l2tp_eth_create() error path
cxgb4: Fix unable to get UP event from the LLD
drivers/net/phy/mdio-bitbang.c: Call mdiobus_unregister before mdiobus_free
drivers/net/ethernet/nxp/lpc_eth.c: Call mdiobus_unregister before mdiobus_free
bnx2x: fix HW initialization using fw 7.8.x
tcp: Fix double sizeof in new tcp_metrics code
net: fix divide by zero in tcp algorithm illinois
net: sctp: Fix typo in net/sctp
bonding: fix second off-by-one error
bonding: fix off-by-one error
bnx2x: Disable FCoE for 57840 since not yet supported by FW
bnx2x: Fix no link on 577xx 10G-baseT
bnx2x: Fix unrecognized SFP+ module after driver is loaded
bnx2x: Fix potential incorrect link speed provision
bnx2x: Restore global registers back to default.
bnx2x: Fix link down in 57712 following LFA
bnx2x: Fix 57810 1G-KR link against certain switches.
ixgbe: PTP get_ts_info missing software support
...
When sending data into a tcp socket in repair state we should check
for the amount of data being 0 explicitly. Otherwise we'll have an skb
with seq == end_seq in rcv queue, but tcp doesn't expect this to happen
(in particular a warn_on in tcp_recvmsg shoots).
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Reported-by: Giorgos Mavrikas <gmavrikas@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
vmxnet3 has a 16Kbytes limit per tx descriptor, that happened to work
as long as we provided PAGE_SIZE fragments.
Our stack can now build larger fragments, so we need to split them to
the 16kbytes boundary.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: jongman heo <jongman.heo@samsung.com>
Tested-by: jongman heo <jongman.heo@samsung.com>
Cc: Shreyas Bhatewara <sbhatewara@vmware.com>
Reviewed-by: Bhavesh Davda <bhavesh@vmware.com>
Signed-off-by: Shreyas Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When creating an L2TPv3 Ethernet session, if register_netdev() should fail for
any reason (for example, automatic naming for "l2tpeth%d" interfaces hits the
32k-interface limit), the netdev is freed in the error path. However, the
l2tp_eth_sess structure's dev pointer is left uncleared, and this results in
l2tp_eth_delete() then attempting to unregister the same netdev later in the
session teardown. This results in an oops.
To avoid this, clear the session dev pointer in the error path.
Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There are systems where video module known to work fine regardless
of broken _DOD and ignoring returned value here doesn't cause
any issues later. This should fix brightness controls on some laptops.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=47861
Signed-off-by: Igor Murzov <e-mail@date.by>
Reviewed-by: Sergey V <sftp.mtuci@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
following were the errors reported
drivers/thermal/rcar_thermal.c: In function ‘rcar_thermal_probe’:
drivers/thermal/rcar_thermal.c:214:10: warning: passing argument 3 of ‘thermal_zone_device_register’ makes integer from pointer without a cast [enabled by default]
include/linux/thermal.h:166:29: note: expected ‘int’ but argument is of type ‘struct rcar_thermal_priv *’
drivers/thermal/rcar_thermal.c:214:10: error: too few arguments to function ‘thermal_zone_device_register’
include/linux/thermal.h:166:29: note: declared here
make[1]: *** [drivers/thermal/rcar_thermal.o] Error 1
make: *** [drivers/thermal/rcar_thermal.o] Error 2
with gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
Signed-off-by: Devendra Naga <develkernel412222@gmail.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
If T4 configuration file gets loaded from the /lib/firmware/cxgb4/ directory
then offload capabilities of the cards were getting disabled during
initialization. Hence ULDs do not get an UP event from the LLD.
Signed-off-by: Jay Hernandez <jay@chelsio.com>
Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Based on commit b27393aecf
Calling mdiobus_free without calling mdiobus_unregister causes
BUG_ON(). This patch fixes the issue.
The semantic patch that found this issue(http://coccinelle.lip6.fr/):
// <smpl>
@@
expression E;
@@
... when != mdiobus_unregister(E);
+ mdiobus_unregister(E);
mdiobus_free(E);
// </smpl>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Based on commit b27393aecf
Calling mdiobus_free without calling mdiobus_unregister causes
BUG_ON(). This patch fixes the issue.
The semantic patch that found this issue(http://coccinelle.lip6.fr/):
// <smpl>
@@
expression E;
@@
... when != mdiobus_unregister(E);
+ mdiobus_unregister(E);
mdiobus_free(E);
// </smpl>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Tested-by: Roland Stigge <stigge@antcom.de>
Tested-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since commit 96bed4b9 (use FW 7.8.2) BRB HW block needs to be
initialized using fw values for all devices.
Otherwise ETS on 57712/578xx will not work.
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Change the email address of the powernow-k8 maintainer.
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Merge tag 'pm-for-3.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management update from Rafael J. Wysocki:
"Change the email address of the powernow-k8 maintainer."
* tag 'pm-for-3.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq / powernow-k8: Change maintainer's email address
Return errno - not an NFS4ERR_. This worked because NFS4ERR_ACCESS == EACCES.
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Pull more scsi target fixes from Nicholas Bellinger:
"This series is a second round of target fixes for v3.7-rc4 that have
come into target-devel over the last days, and are important enough to
be applied ASAP.
All are being CC'ed to stable. The most important two are:
- target: Re-add explict zeroing of INQUIRY bounce buffer memory to
fix a regression for handling zero-length payloads, a bug that went
during v3.7-rc1, and hit >= v3.6.3 stable. (nab + paolo)
- iscsi-target: Fix a long-standing missed R2T wakeup race in TX
thread processing when using a single queue slot. (Roland)
Thanks to Roland & PureStorage team for helping to track down this
long standing race with iscsi-target single queue slot operation.
Also, the tcm_fc(FCoE) regression bug that was observed recently with
-rc2 code has also been resolved with the cancel_delayed_work() return
bugfix (commit c0158ca64d: "workqueue: cancel_delayed_work() should
return %false if work item is idle") now in -rc3. Thanks again to Yi
Zou, MDR, Robert Love @ Intel for helping to track this down."
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target: Fix incorrect usage of nested IRQ spinlocks in ABORT_TASK path
iscsi-target: Fix missed wakeup race in TX thread
target: Avoid integer overflow in se_dev_align_max_sectors()
target: Don't return success from module_init() if setup fails
target: Re-add explict zeroing of INQUIRY bounce buffer memory
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Merge tag 'frv-fixes-20121102' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-frv
Pull FRV fixes from David Howells:
"A collection of small fixes for the FRV architecture."
* tag 'frv-fixes-20121102' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-frv:
frv: fix the broken preempt
frv: switch to saner kernel_execve() semantics
FRV: Fix the new-style kernel_thread() stuff
FRV: Fix the preemption handling
FRV: gcc-4.1.2 also inlines weak functions
FRV: Don't objcopy the GNU build_id note
FRV: Add missing linux/export.h #inclusions
This hashtable implementation is using hlist buckets to provide a simple
hashtable to prevent it from getting reimplemented all over the kernel.
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
[ Merging this now, so that subsystems can start applying Sasha's
patches that use this - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Just get %icc2 into the state we would have after local_irq_disable()
and physical IRQ having happened since then. Then we can simply
use preempt_schedule_irq() and be done with the whole mess.
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
The kernel_thread() changes for FRV don't work, and FRV fails to boot,
starting with:
commit 02ce496f15
Author: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue Sep 18 22:18:51 2012 -0400
Subject: frv: split ret_from_fork, simplify kernel_thread() a lot
The problem is that the userspace registers are completely cleared when a
kernel thread is created and all subsequent user threads are then copied from
that. Unfortunately, however, the TBR and PSR registers are restored from the
pt_regs and the values they should be set to are clobbered by the memset.
Instead, copy across the old user registers as normal, and then merely alter
GR8 and GR9 in it if we're going to execute a kernel thread.
Signed-off-by: David Howells <dhowells@redhat.com>
Fix the preemption handling in FRV code where the PREEMPT_ACTIVE value is
incorrectly loaded into the threadinfo flags rather than the threadinfo
preemption count.
Unfortunately, the code cannot be simply converted to use
preempt_schedule_irq() as is because FRV uses virtual interrupt disablement to
cut down on the cost of actually disabling interrupts and thus
local_irq_enable() doesn't actually enable interrupts.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Al Viro <viro@ZenIV.linux.org.uk>
gcc-4.1.2 inlines weak functions, which causes FRV to fail when the dummy
thread_info_cache_init() gets inlined into start_kernel().
Signed-off-by: David Howells <dhowells@redhat.com>
Don't let objcopy transfer the GNU build_id note into the loadable image as it
is located at address 0 and the image ends up >3G in size.
Signed-off-by: David Howells <dhowells@redhat.com>
