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Pull NFS client updates from Trond Myklebust:
"Highlights include:
- Fix NFSv4 recovery so that it doesn't recover lost locks in cases
such as lease loss due to a network partition, where doing so may
result in data corruption. Add a kernel parameter to control
choice of legacy behaviour or not.
- Performance improvements when 2 processes are writing to the same
file.
- Flush data to disk when an RPCSEC_GSS session timeout is imminent.
- Implement NFSv4.1 SP4_MACH_CRED state protection to prevent other
NFS clients from being able to manipulate our lease and file
locking state.
- Allow sharing of RPCSEC_GSS caches between different rpc clients.
- Fix the broken NFSv4 security auto-negotiation between client and
server.
- Fix rmdir() to wait for outstanding sillyrename unlinks to complete
- Add a tracepoint framework for debugging NFSv4 state recovery
issues.
- Add tracing to the generic NFS layer.
- Add tracing for the SUNRPC socket connection state.
- Clean up the rpc_pipefs mount/umount event management.
- Merge more patches from Chuck in preparation for NFSv4 migration
support"
* tag 'nfs-for-3.12-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (107 commits)
NFSv4: use mach cred for SECINFO_NO_NAME w/ integrity
NFS: nfs_compare_super shouldn't check the auth flavour unless 'sec=' was set
NFSv4: Allow security autonegotiation for submounts
NFSv4: Disallow security negotiation for lookups when 'sec=' is specified
NFSv4: Fix security auto-negotiation
NFS: Clean up nfs_parse_security_flavors()
NFS: Clean up the auth flavour array mess
NFSv4.1 Use MDS auth flavor for data server connection
NFS: Don't check lock owner compatability unless file is locked (part 2)
NFS: Don't check lock owner compatibility in writes unless file is locked
nfs4: Map NFS4ERR_WRONG_CRED to EPERM
nfs4.1: Add SP4_MACH_CRED write and commit support
nfs4.1: Add SP4_MACH_CRED stateid support
nfs4.1: Add SP4_MACH_CRED secinfo support
nfs4.1: Add SP4_MACH_CRED cleanup support
nfs4.1: Add state protection handler
nfs4.1: Minimal SP4_MACH_CRED implementation
SUNRPC: Replace pointer values with task->tk_pid and rpc_clnt->cl_clid
SUNRPC: Add an identifier for struct rpc_clnt
SUNRPC: Ensure rpc_task->tk_pid is available for tracepoints
...
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse bugfixes from Miklos Szeredi:
"Just a bunch of bugfixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: use list_for_each_entry() for list traversing
fuse: readdir: check for slash in names
fuse: hotfix truncate_pagecache() issue
fuse: invalidate inode attributes on xattr modification
fuse: postpone end_page_writeback() in fuse_writepage_locked()
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git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw
Pull GFS2 updates from Steven Whitehouse:
"This is possibly the smallest ever set of GFS2 patches for a merge
window. Also, most of them are bug fixes this time.
Two of my three patches (moving gfs2_sync_meta and merging the two
writepage implementations) are clean ups with the third (taking the
glock ref in examine_bucket) being a fix for a difficult to hit race
condition.
The removal of an unused memory barrier is a clean up from Bob
Peterson, and the "spectator" relates to a rarely used mount option.
Ben Marzinski's patch fixes a corner case where the incorrect inode
flags were being set, resulting in incorrect behaviour on fsync"
* tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw:
GFS2: dirty inode correctly in gfs2_write_end
GFS2: Don't flag consistency error if first mounter is a spectator
GFS2: Remove unnecessary memory barrier
GFS2: Merge ordered and writeback writepage
GFS2: Take glock reference in examine_bucket()
GFS2: Move gfs2_sync_meta to lops.c
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull ceph updates from Sage Weil:
"This includes both the first pile of Ceph patches (which I sent to
torvalds@vger, sigh) and a few new patches that add support for
fscache for Ceph. That includes a few fscache core fixes that David
Howells asked go through the Ceph tree. (Thanks go to Milosz Tanski
for putting this feature together)
This first batch of patches (included here) had (has) several
important RBD bug fixes, hole punch support, several different
cleanups in the page cache interactions, improvements in the truncate
code (new truncate mutex to avoid shenanigans with i_mutex), and a
series of fixes in the synchronous striping read/write code.
On top of that is a random collection of small fixes all across the
tree (error code checks and error path cleanup, obsolete wq flags,
etc)"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (43 commits)
ceph: use d_invalidate() to invalidate aliases
ceph: remove ceph_lookup_inode()
ceph: trivial buildbot warnings fix
ceph: Do not do invalidate if the filesystem is mounted nofsc
ceph: page still marked private_2
ceph: ceph_readpage_to_fscache didn't check if marked
ceph: clean PgPrivate2 on returning from readpages
ceph: use fscache as a local presisent cache
fscache: Netfs function for cleanup post readpages
FS-Cache: Fix heading in documentation
CacheFiles: Implement interface to check cache consistency
FS-Cache: Add interface to check consistency of a cached object
rbd: fix null dereference in dout
rbd: fix buffer size for writes to images with snapshots
libceph: use pg_num_mask instead of pgp_num_mask for pg.seed calc
rbd: fix I/O error propagation for reads
ceph: use vfs __set_page_dirty_nobuffers interface instead of doing it inside filesystem
ceph: allow sync_read/write return partial successed size of read/write.
ceph: fix bugs about handling short-read for sync read mode.
ceph: remove useless variable revoked_rdcache
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git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag
Pull metag architecture changes from James Hogan:
- Device tree updates for TZ1090 GPIO drivers merged via GPIO tree.
- Add driver for ImgTec PDC irqchip as found in TZ1090 SoC.
- Add linux-metag mailing list to MAINTAINERS file.
* tag 'metag-for-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
irq-imgpdc: add ImgTec PDC irqchip driver
MAINTAINERS: add linux-metag mailing list
metag: tz1090: instantiate gpio-tz1090-pdc
metag: tz1090: select and instantiate gpio-tz1090
metag: tz1090: select and instantiate irq-imgpdc
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git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC changes from Vineet Gupta:
- ARC MM changes:
- preparation for MMUv4 (accomodate new PTE bits, new cmds)
- Rework the ASID allocation algorithm to remove asid-mm reverse map
- Boilerplate code consolidation in Exception Handlers
- Disable FRAME_POINTER for ARC
- Unaligned Access Emulation for Big-Endian from Noam
- Bunch of fixes (udelay, missing accessors) from Mischa
* tag 'arc-v3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: fix new Section mismatches in build (post __cpuinit cleanup)
Kconfig.debug: Add FRAME_POINTER anti-dependency for ARC
ARC: Fix __udelay calculation
ARC: remove console_verbose() from setup_arch()
ARC: Add read*_relaxed to asm/io.h
ARC: Handle un-aligned user space access in BE.
ARC: [ASID] Track ASID allocation cycles/generations
ARC: [ASID] activate_mm() == switch_mm()
ARC: [ASID] get_new_mmu_context() to conditionally allocate new ASID
ARC: [ASID] Refactor the TLB paranoid debug code
ARC: [ASID] Remove legacy/unused debug code
ARC: No need to flush the TLB in early boot
ARC: MMUv4 preps/3 - Abstract out TLB Insert/Delete
ARC: MMUv4 preps/2 - Reshuffle PTE bits
ARC: MMUv4 preps/1 - Fold PTE K/U access flags
ARC: Code cosmetics (Nothing semantical)
ARC: Entry Handler tweaks: Optimize away redundant IRQ_DISABLE_SAVE
ARC: Exception Handlers Code consolidation
ARC: Add some .gitignore entries
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git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu fixes from Greg Ungerer:
"Just a small collection of cleanups and fixes this time, no big
changes. The most interresting are to make the m68k and m68knommu
consistently use CONFIG_IOMAP, clean out some unused board config
options and flush the cache on signal stack creation"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68k: remove 16 unused boards in Kconfig.machine
m68k: define 'VM_DATA_DEFAULT_FLAGS' no matter whether has 'NOMMU' or not
m68knommu: user generic iomap to support ioread*/iowrite*
m68k/coldfire: flush cache when creating the signal stack frame
m68knommu: Mark functions only called from setup_arch() __init
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Pull UML updates from Richard Weinberger:
"This pile contains mostly fixes and improvements for issues identified
by Richard W M Jones while adding UML as backend to libguestfs"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
um: Add irq chip um/mask handlers
um: prctl: Do not include linux/ptrace.h
um: Run UML in it's own session.
um: Cleanup SIGTERM handling
um: ubd: Introduce submit_request()
um: ubd: Add REQ_FLUSH suppport
um: Implement probe_kernel_read()
um: hostfs: Fix writeback
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This is the fix that the last two commits indirectly led up to - making
sure that we don't call dput() in a bad context on the dentries we've
looked up in RCU mode after the sequence count validation fails.
This basically expands d_rcu_to_refcount() into the callers, and then
fixes the callers to delay the dput() in the failure case until _after_
we've dropped all locks and are no longer in an RCU-locked region.
The case of 'complete_walk()' was trivial, since its failure case did
the unlock_rcu_walk() directly after the call to d_rcu_to_refcount(),
and as such that is just a pure expansion of the function with a trivial
movement of the resulting dput() to after 'unlock_rcu_walk()'.
In contrast, the unlazy_walk() case was much more complicated, because
not only does convert two different dentries from RCU to be reference
counted, but it used to not call unlock_rcu_walk() at all, and instead
just returned an error and let the caller clean everything up in
"terminate_walk()".
Happily, one of the dentries in question (called "parent" inside
unlazy_walk()) is the dentry of "nd->path", which terminate_walk() wants
a refcount to anyway for the non-RCU case.
So what the new and improved unlazy_walk() does is to first turn that
dentry into a refcounted one, and once that is set up, the error cases
can continue to use the terminate_walk() helper for cleanup, but for the
non-RCU case. Which makes it possible to drop out of RCU mode if we
actually hit the sequence number failure case.
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This simplifies the RCU to refcounting code in particular.
I was originally intending to leave this for later, but walking through
all the dput() logic (see previous commit), I realized that the dput()
"might_sleep()" check was misleadingly weak. And I removed it as
misleading, both for performance profiling and for debugging.
However, the might_sleep() debugging case is actually true: the final
dput() can indeed sleep, if the inode of the dentry that you are
releasing ends up sleeping at iput time (see dentry_iput()). So the
problem with the might_sleep() in dput() wasn't that it wasn't true, it
was that it wasn't actually testing and triggering on the interesting
case.
In particular, just about *any* dput() can indeed sleep, if you happen
to race with another thread deleting the file in question, and you then
lose the race to the be the last dput() for that file. But because it's
a very rare race, the debugging code would never trigger it in practice.
Why is this problematic? The new d_rcu_to_refcount() (see commit
15570086b590: "vfs: reimplement d_rcu_to_refcount() using
lockref_get_or_lock()") does a dput() for the failure case, and it does
it under the RCU lock. So potentially sleeping really is a bug.
But there's no way I'm going to fix this with the previous complicated
"lockref_get_or_lock()" interface. And rather than revert to the old
and crufty nested dentry locking code (which did get this right by
delaying the reference count updates until they were verified to be
safe), let's make forward progress.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This is me being a bit OCD after all the dentry optimization work this
merge window: profiles end up showing 'dput()' as a rather expensive
operation, and there were two unrelated bad reasons for that.
The first reason was reading d_lockref.count for debugging purposes,
which touches the lockref cacheline (for reads) before really need to.
More importantly, the debugging test in question is _wrong_, and has
hidden bugs. It's true that we can only sleep when the count goes down
to zero, but the test as-is hides the much more subtle bug that happens
if we race with somebody else deleting the file.
Anyway we _will_ touch that cacheline, but let's do it for a write and
in the right routine (ie in "lockref_put_or_lock()") which annotates the
costs better. So remove the misleading debug code.
The other was an unnecessary access to the cacheline that contains the
d_lru list, just to check whether we already were on the LRU list or
not. This is exactly what we have d_flags for, so that we can avoid
touching extra cache lines for the common case. So just add another bit
for "is this dentry on the LRU".
Finally, mark the tests properly likely/unlikely, so that the common
fast-paths are dense in the instruction stream.
This makes the profiles look much saner.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull NVM Express driver update from Matthew Wilcox.
* git://git.infradead.org/users/willy/linux-nvme:
NVMe: Merge issue on character device bring-up
NVMe: Handle ioremap failure
NVMe: Add pci suspend/resume driver callbacks
NVMe: Use normal shutdown
NVMe: Separate controller init from disk discovery
NVMe: Separate queue alloc/free from create/delete
NVMe: Group pci related actions in functions
NVMe: Disk stats for read/write commands only
NVMe: Bring up cdev on set feature failure
NVMe: Fix checkpatch issues
NVMe: Namespace IDs are unsigned
NVMe: Update nvme_id_power_state with latest spec
NVMe: Split header file into user-visible and kernel-visible pieces
NVMe: Call nvme_process_cq from submission path
NVMe: Remove "process_cq did something" message
NVMe: Return correct value from interrupt handler
NVMe: Disk IO statistics
NVMe: Restructure MSI / MSI-X setup
NVMe: Use kzalloc instead of kmalloc+memset
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Pull NTB (non-transparent bridge) updates from Jon Mason:
"NTB driver bug fixes to address issues in NTB-RP enablement, spad,
debugfs, and USD/DSD identification.
Add a workaround on Xeon NTB devices for b2bdoorbell errata. Also,
add new NTB driver features to support 32bit x86, DMA engine support,
and NTB-RP support.
Finally, a few clean-ups and update to MAINTAINERS for the NTB git
tree and wiki location"
* tag 'ntb-3.12' of git://github.com/jonmason/ntb:
ntb: clean up unnecessary MSI/MSI-X capability find
MAINTAINERS: Add Website and Git Tree for NTB
NTB: Update Version
NTB: Comment Fix
NTB: Remove unused variable
NTB: Remove References of non-B2B BWD HW
NTB: NTB-RP support
NTB: Rename Variables for NTB-RP
NTB: Use DMA Engine to Transmit and Receive
NTB: Enable 32bit Support
NTB: Update Device IDs
NTB: BWD Link Recovery
NTB: Xeon Errata Workaround
NTB: Correct debugfs to work with more than 1 NTB Device
NTB: Correct USD/DSD Identification
NTB: Correct Number of Scratch Pad Registers
NTB: Add Error Handling in ntb_device_setup
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git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next
Pull MFD (multi-function device) updates from Samuel Ortiz:
"For the 3.12 merge window we have one new driver for the DA9063 PMIC
from Dialog Semiconductor.
Besides that driver we also have:
- Device tree support for the s2mps11 driver
- More devm_* conversion for the pm8921, max89xx, menelaus, tps65010,
wl1273 and pcf50633-adc drivers.
- A conversion to threaded IRQ and IRQ domain for the twl6030 driver.
- A fairly big update for the rtsx driver: Better power saving
support, better vendor settings handling, and a few fixes.
- Support for a couple more boards (COMe-bHL6 and COMe-cTH6) for the
Kontron driver.
- A conversion to the dev_get_platdata() API for all MFD drivers.
- A removal of non-DT (legacy) support for the twl6040 driver.
- A few fixes and additions (Mic detect level) to the wm5110 register
tables.
- Regmap support for the davinci_voicecodec driver.
- The usual bunch of minor cleanups and janitorial fixes"
* tag 'mfd-3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next: (81 commits)
mfd: ucb1x00-core: Rewrite ucb1x00_add_dev()
mfd: ab8500-debugfs: Apply a check for -ENOMEM after allocating memory for event name
mfd: ab8500-debugfs: Apply a check for -ENOMEM after allocating memory for sysfs
mfd: timberdale: Use module_pci_driver
mfd: timberdale: Remove redundant break
mfd: timberdale: Staticize local variables
mfd: ab8500-debugfs: Staticize local variables
mfd: db8500-prcmu: Staticize clk_mgt
mfd: db8500-prcmu: Use ANSI function declaration
mfd: omap-usb-host: Staticize usbhs_driver_name
mfd: 88pm805: Fix potential NULL pdata dereference
mfd: 88pm800: Fix potential NULL pdata dereference
mfd: twl6040: Use regmap for register cache
mfd: davinci_voicecodec: Provide a regmap for register I/O
mfd: davinci_voicecodec: Remove unused read and write functions
mmc: memstick: rtsx: Modify copyright comments
mmc: rtsx: Clear SD_CLK toggle enable bit if switching voltage fail
mfd: mmc: rtsx: Change default tx phase
mfd: pcf50633-adc: Use devm_*() functions
mfd: rtsx: Copyright modifications
...
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull misc kbuild updates from Michal Marek:
"In the kbuild misc branch, I have:
- make rpm-pkg updates, most importantly the rpm package now calls
/sbin/installkernel
- make deb-pkg: debuginfo split, correct kernel image path for
parisc, mips and powerpc and a couple more minor fixes
- New coccinelle check"
* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
scripts/checkkconfigsymbols.sh: replace echo -e with printf
Provide version number for Debian firmware package
coccinelle: replace 0/1 with false/true in functions returning bool
deb-pkg: add a hook argument to match debian hooks parameters
deb-pkg: fix installed image path on parisc, mips and powerpc
deb-pkg: split debug symbols in their own package
deb-pkg: use KCONFIG_CONFIG instead of .config file directly
rpm-pkg: add generation of kernel-devel
rpm-pkg: install firmware files in kernel relative directory
rpm-pkg: add %post section to create initramfs and grub hooks
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild update from Michal Marek:
"Only these two commits are in the kbuild branch this time:
- Using filechk for include/config/kernel.release
- Cleanup in scripts/sortextable.c"
* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
kbuild: Do not overwrite include/config/kernel.release needlessly
scripts: remove unused function in sortextable.c
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The only actual current lockref user (dcache) uses zero reference counts
even for perfectly live dentries, because it's a cache: there may not be
any users, but that doesn't mean that we want to throw away the dentry.
At the same time, the dentry cache does have a notion of a truly "dead"
dentry that we must not even increment the reference count of, because
we have pruned it and it is not valid.
Currently that distinction is not visible in the lockref itself, and the
dentry cache validation uses "lockref_get_or_lock()" to either get a new
reference to a dentry that already had existing references (and thus
cannot be dead), or get the dentry lock so that we can then verify the
dentry and increment the reference count under the lock if that
verification was successful.
That's all somewhat complicated.
This adds the concept of being "dead" to the lockref itself, by simply
using a count that is negative. This allows a usage scenario where we
can increment the refcount of a dentry without having to validate it,
and pushing the special "we killed it" case into the lockref code.
The dentry code itself doesn't actually use this yet, and it's probably
too late in the merge window to do that code (the dentry_kill() code
with its "should I decrement the count" logic really is pretty complex
code), but let's introduce the concept at the lockref level now.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Commit 97431204ea005ec8070ac94bc3251e836daa7ca7 introduced a regression
that causes SECINFO_NO_NAME to fail without sending an RPC if:
1) the nfs_client's rpc_client is using krb5i/p (now tried by default)
2) the current user doesn't have valid kerberos credentials
This situation is quite common - as of now a sec=sys mount would use
krb5i for the nfs_client's rpc_client and a user would hardly be faulted
for not having run kinit.
The solution is to use the machine cred when trying to use an integrity
protected auth flavor for SECINFO_NO_NAME.
Older servers may not support using the machine cred or an integrity
protected auth flavor for SECINFO_NO_NAME in every circumstance, so we fall
back to using the user's cred and the filesystem's auth flavor in this case.
We run into another problem when running against linux nfs servers -
they return NFS4ERR_WRONGSEC when using integrity auth flavor (unless the
mount is also that flavor) even though that is not a valid error for
SECINFO*. Even though it's against spec, handle WRONGSEC errors on
SECINFO_NO_NAME by falling back to using the user cred and the
filesystem's auth flavor.
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Also don't worry about obsolete mount flags...
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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The code got rewritten, but the comments got copied as-is from older
versions, and as a result the argument name in the comment didn't
actually match the code any more.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In cases where the parent super block was not mounted with a 'sec=' line,
allow autonegotiation of security for the submounts.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Ensure that nfs4_proc_lookup_common respects the NFS_MOUNT_SECFLAVOUR
flag.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs pile 2 (of many) from Al Viro:
"Mostly Miklos' series this time"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
constify dcache.c inlined helpers where possible
fuse: drop dentry on failed revalidate
fuse: clean up return in fuse_dentry_revalidate()
fuse: use d_materialise_unique()
sysfs: use check_submounts_and_drop()
nfs: use check_submounts_and_drop()
gfs2: use check_submounts_and_drop()
afs: use check_submounts_and_drop()
vfs: check unlinked ancestors before mount
vfs: check submounts and drop atomically
vfs: add d_walk()
vfs: restructure d_genocide()
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull namespace changes from Eric Biederman:
"This is an assorted mishmash of small cleanups, enhancements and bug
fixes.
The major theme is user namespace mount restrictions. nsown_capable
is killed as it encourages not thinking about details that need to be
considered. A very hard to hit pid namespace exiting bug was finally
tracked and fixed. A couple of cleanups to the basic namespace
infrastructure.
Finally there is an enhancement that makes per user namespace
capabilities usable as capabilities, and an enhancement that allows
the per userns root to nice other processes in the user namespace"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
userns: Kill nsown_capable it makes the wrong thing easy
capabilities: allow nice if we are privileged
pidns: Don't have unshare(CLONE_NEWPID) imply CLONE_THREAD
userns: Allow PR_CAPBSET_DROP in a user namespace.
namespaces: Simplify copy_namespaces so it is clear what is going on.
pidns: Fix hang in zap_pid_ns_processes by sending a potentially extra wakeup
sysfs: Restrict mounting sysfs
userns: Better restrictions on when proc and sysfs can be mounted
vfs: Don't copy mount bind mounts of /proc/<pid>/ns/mnt between namespaces
kernel/nsproxy.c: Improving a snippet of code.
proc: Restrict mounting the proc filesystem
vfs: Lock in place mounts from more privileged users
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem updates from James Morris:
"Nothing major for this kernel, just maintenance updates"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (21 commits)
apparmor: add the ability to report a sha1 hash of loaded policy
apparmor: export set of capabilities supported by the apparmor module
apparmor: add the profile introspection file to interface
apparmor: add an optional profile attachment string for profiles
apparmor: add interface files for profiles and namespaces
apparmor: allow setting any profile into the unconfined state
apparmor: make free_profile available outside of policy.c
apparmor: rework namespace free path
apparmor: update how unconfined is handled
apparmor: change how profile replacement update is done
apparmor: convert profile lists to RCU based locking
apparmor: provide base for multiple profiles to be replaced at once
apparmor: add a features/policy dir to interface
apparmor: enable users to query whether apparmor is enabled
apparmor: remove minimum size check for vmalloc()
Smack: parse multiple rules per write to load2, up to PAGE_SIZE-1 bytes
Smack: network label match fix
security: smack: add a hash table to quicken smk_find_entry()
security: smack: fix memleak in smk_write_rules_list()
xattr: Constify ->name member of "struct xattr".
...
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Pull crypto update from Herbert Xu:
"Here is the crypto update for 3.12:
- Added MODULE_SOFTDEP to allow pre-loading of modules.
- Reinstated crct10dif driver using the module softdep feature.
- Allow via rng driver to be auto-loaded.
- Split large input data when necessary in nx.
- Handle zero length messages correctly for GCM/XCBC in nx.
- Handle SHA-2 chunks bigger than block size properly in nx.
- Handle unaligned lengths in omap-aes.
- Added SHA384/SHA512 to omap-sham.
- Added OMAP5/AM43XX SHAM support.
- Added OMAP4 TRNG support.
- Misc fixes"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (66 commits)
Reinstate "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework"
hwrng: via - Add MODULE_DEVICE_TABLE
crypto: fcrypt - Fix bitoperation for compilation with clang
crypto: nx - fix SHA-2 for chunks bigger than block size
crypto: nx - fix GCM for zero length messages
crypto: nx - fix XCBC for zero length messages
crypto: nx - fix limits to sg lists for AES-CCM
crypto: nx - fix limits to sg lists for AES-XCBC
crypto: nx - fix limits to sg lists for AES-GCM
crypto: nx - fix limits to sg lists for AES-CTR
crypto: nx - fix limits to sg lists for AES-CBC
crypto: nx - fix limits to sg lists for AES-ECB
crypto: nx - add offset to nx_build_sg_lists()
padata - Register hotcpu notifier after initialization
padata - share code between CPU_ONLINE and CPU_DOWN_FAILED, same to CPU_DOWN_PREPARE and CPU_UP_CANCELED
hwrng: omap - reorder OMAP TRNG driver code
crypto: omap-sham - correct dma burst size
crypto: omap-sham - Enable Polling mode if DMA fails
crypto: tegra-aes - bitwise vs logical and
crypto: sahara - checking the wrong variable
...
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Pull networking fixes from David Miller:
"A quick set of fixes, some to deal with fallout from yesterday's
net-next merge.
1) Fix compilation of bnx2x driver with CONFIG_BNX2X_SRIOV disabled,
from Dmitry Kravkov.
2) Fix a bnx2x regression caused by one of Dave Jones's mistaken
braces changes, from Eilon Greenstein.
3) Add some protective filtering in the netlink tap code, from Daniel
Borkmann.
4) Fix TCP congestion window growth regression after timeouts, from
Yuchung Cheng.
5) Correctly adjust TCP's rcv_ssthresh for out of order packets, from
Eric Dumazet"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
tcp: properly increase rcv_ssthresh for ofo packets
net: add documentation for BQL helpers
mlx5: remove unused MLX5_DEBUG param in Kconfig
bnx2x: Restore a call to config_init
bnx2x: fix broken compilation with CONFIG_BNX2X_SRIOV is not set
tcp: fix no cwnd growth after timeout
net: netlink: filter particular protocols from analyzers
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NFSv4 security auto-negotiation has been broken since
commit 4580a92d44e2b21c2254fa5fef0f1bfb43c82318 (NFS:
Use server-recommended security flavor by default (NFSv3))
because nfs4_try_mount() will automatically select AUTH_SYS
if it sees no auth flavours.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Chuck Lever <chuck.lever@oracle.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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What is the point of having a 'auth_flavor_len' field, if it is
always set to 1, and can't be used to determine if the user has
selected an auth flavour?
This cleanup goes back to using auth_flavor_len for its original
intended purpose, and gets rid of the ad-hoc replacements.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
Pull hwmon fixes from Jean Delvare.
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
hwmon: (emc6w201) Do not declare enum variable
hwmon: (w83792d) Update module author
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v3.12 series:
- A new driver for the TZ1090 PDC which is used on the metag
architecture.
- A new driver for the Kontron ETX or COMexpress GPIO block. This is
found on some ETX x86 devices.
- A new driver for the Fintek Super-I/O chips, used on some x86
boards.
- Added device tree probing on a few select GPIO blocks.
- Drop the Exynos support from the Samsung GPIO driver.
The Samsung maintainers have moved over to use the modernized pin
control driver to provide GPIO for the modern platforms instead.
- The usual bunch of non-critical fixes and cleanups"
* tag 'gpio-v3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (36 commits)
gpio: return -ENOTSUPP if debounce cannot be set
gpio: improve error path in gpiolib
gpio: add GPIO support for F71882FG and F71889F
of: add vendor prefix for Microchip Technology Inc
gpio: mcp23s08: rename the device tree property
gpio: samsung: Drop support for Exynos SoCs
gpio: pcf857x: Remove pdata argument to pcf857x_irq_domain_init()
gpio: pcf857x: Sort headers alphabetically
gpio: max7301: Reverting "Do not force SPI speed when using OF Platform"
gpio: Fix bit masking in Kontron PLD GPIO driver
gpio: pca953x: fix gpio input on gpio offsets >= 8
drivers/gpio: simplify use of devm_ioremap_resource
drivers/gpio/gpio-omap.c: convert comma to semicolon
gpio-lynxpoint: Fix warning about unbalanced pm_runtime_enable
gpio: Fix platform driver name in Kontron PLD GPIO driver
gpio: adnp: Fix segfault if request_threaded_irq fails
gpio: msm: Staticize local variable 'msm_gpio'
gpio: gpiolib-of.c: make error message more meaningful by adding the node name and index
gpio: use dev_get_platdata()
gpio/mxc: add chained_irq_enter/exit() to mx2_gpio_irq_handler
...
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
"A new driver for slidebar on Ideapad laptops and a bunch of assorted
driver fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (32 commits)
Input: add SYN_MAX and SYN_CNT constants
Input: max11801_ts - convert to devm
Input: egalax-ts - fix typo and improve text
Input: MAINTAINERS - change maintainer for cyttsp driver
Input: cyttsp4 - kill 'defined but not used' compiler warnings
Input: add driver for slidebar on Lenovo IdeaPad laptops
Input: omap-keypad - set up irq type from DT
Input: omap-keypad - enable wakeup capability for keypad.
Input: omap-keypad - clear interrupts on open
Input: omap-keypad - convert to threaded IRQ
Input: omap-keypad - use bitfiled instead of hardcoded values
Input: cyttsp4 - remove useless NULL test from cyttsp4_watchdog_timer()
Input: wacom - fix error return code in wacom_probe()
Input: as5011 - fix error return code in as5011_probe()
Input: keyboard, serio - simplify use of devm_ioremap_resource
Input: tegra-kbc - simplify use of devm_ioremap_resource
Input: htcpen - fix incorrect placement of __initdata
Input: qt1070 - add power management ops
Input: wistron_btns - add MODULE_DEVICE_TABLE
Input: wistron_btns - mark the Medion MD96500 keymap as tested
...
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This reverts commits 61e00655e9cb, 73f8645db191 and 8e22ecb603c8:
"Input: introduce BTN/ABS bits for drums and guitars"
"HID: wiimote: add support for Guitar-Hero drums"
"HID: wiimote: add support for Guitar-Hero guitars"
The extra new ABS_xx values resulted in ABS_MAX no longer being a
power-of-two, which broke the comparison logic. It also caused the
ioctl numbers to overflow into the next byte, causing problems for that.
We'll try again for 3.13.
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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These handlers are not optional and need in our case
dummy implementions to avoid NULL pointer bugs within
the irq core code.
Reported-and-tested-by: Toralf Foester <toralf.foerster@gmx.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
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On recent toolchains we hit:
In file included from arch/x86/um/os-Linux/prctl.c:7:0:
/usr/include/linux/ptrace.h:58:8: error: redefinition of ‘struct
ptrace_peeksiginfo_args’ struct ptrace_peeksiginfo_args {
^
In file included from arch/x86/um/os-Linux/prctl.c:6:0:
/usr/include/sys/ptrace.h:191:8: note: originally defined here
struct ptrace_peeksiginfo_args
^
make[2]: *** [arch/x86/um/os-Linux/prctl.o] Error 1
make[1]: *** [arch/x86/um/os-Linux] Error 2
make: *** [arch/x86/um] Error 2
The solution is not to include linux/ptrace.h and obtain
the arch specific ptrace command from asm/ptrace.h.
Reported-and-tested-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Signed-off-by: Richard Weinberger <richard@nod.at>
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If UML is not run by a shell it can happen that UML
will kill unrelated proceses upon a fatal exit because
it issues a kill(0, ...).
To prevent such oddities we create a new session in main().
Reported-and-tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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Richard reported that some UML processes survive if the UML
main process receives a SIGTERM.
This issue was caused by a wrongly placed signal(SIGTERM, SIG_DFL)
in init_new_thread_signals().
It disabled the UML exit handler accidently for some processes.
The correct solution is to disable the fatal handler for all
UML helper threads/processes.
Such that last_ditch_exit() does not get called multiple times
and all processes can exit due to SIGTERM.
Reported-and-tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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Just a clean-up patch to remove the open coded
variants and to ensure that all requests are submitted the
same way.
Signed-off-by: Richard Weinberger <richard@nod.at>
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UML's block device driver does not support write barriers,
to support this this patch adds REQ_FLUSH suppport.
Every time the block layer sends a REQ_FLUSH we fsync() now
our backing file to guarantee data consistency.
Reported-and-tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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UML needs it's own probe_kernel_read() to handle kernel
mode faults correctly.
The implementation uses mincore() on the host side to detect
whether a page is owned by the UML kernel process.
This fixes also a possible crash when sysrq-t is used.
Starting with 3.10 sysrq-t calls probe_kernel_read() to
read details from the kernel workers. As kernel worker are
completely async pointers may turn NULL while reading them.
Cc: <stian@nixia.no>
Cc: <tj@kernel.org>
Cc: <stable@vger.kernel.org> # 3.10.x
Signed-off-by: Richard Weinberger <richard@nod.at>
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We have to implement ->release() and trigger writeback from it.
Otherwise we might lose dirty pages at munmap().
Signed-off-by: Richard Weinberger <richard@nod.at>
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Merge first round of changes for 3.12 merge window.
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transform framework"
This patch reinstates commits
67822649d7305caf3dd50ed46c27b99c94eff996
39761214eefc6b070f29402aa1165f24d789b3f7
0b95a7f85718adcbba36407ef88bba0a7379ed03
31d939625a9a20b1badd2d4e6bf6fd39fa523405
2d31e518a42828df7877bca23a958627d60408bc
Now that module softdeps are in the kernel we can use that to resolve
the boot issue which cause the revert.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Merge upstream tree in order to reinstate crct10dif.
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC board updates from Olof Johansson:
"Board updates for 3.12. Again, a bit of domain overlap with SoC and
DT branches, but most of this is around legacy code and board support.
We've found that platform maintainers have a hard time separating all
of these out and might move towards fewer branches for next release.
- Removal of a number of Marvell Kirkwood board files, since contents
is now common and mostly configured via DT.
- Device-tree updates for Marvell Dove, including irqchip and
clocksource setup.
- Defconfig updates. Gotta go somewhere. One new one for Renesas
Lager.
- New backlight drivers for backlights used on Renesas shmobile
platforms.
- Removal of Renesas leds driver.
- Shuffling of some of the new Broadcom platforms to give room for
others in the same mach directory. More in 3.13"
* tag 'boards-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (67 commits)
mmc: sdhci-bcm-kona: Staticize sdhci_bcm_kona_card_event
mmc: sdhci-bcm-kona: Remove unneeded version.h inclusion
ARM: bcm: Make secure API call optional
ARM: DT: binding fixup to align with vendor-prefixes.txt (drivers)
ARM: mmc: fix NONREMOVABLE test in sdhci-bcm-kona
ARM: bcm: Rename board_bcm
mmc: sdhci-bcm-kona: make linker-section warning go away
ARM: tegra: defconfig updates
ARM: dove: add initial DT file for Globalscale D2Plug
ARM: dove: add GPIO IR receiver node to SolidRun CuBox
ARM: dove: add common pinmux functions to DT
ARM: dove: add cpu device tree node
ARM: dove: update dove_defconfig with SI5351, PCI, and xHCI
arch/arm/mach-kirkwood: Avoid using ARRAY_AND_SIZE(e) as a function argument
ARM: kirkwood: fix DT building and update defconfig
ARM: kirkwood: Remove all remaining trace of DNS-320/325 platform code
ARM: configs: disable DEBUG_LL in bcm_defconfig
ARM: bcm281xx: Board specific reboot code
ARM bcm281xx: Turn on socket & network support.
ARM: bcm281xx: Turn on L2 cache.
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform changes from Olof Johansson:
"This branch contains mostly additions and changes to platform
enablement and SoC-level drivers. Since there's sometimes a
dependency on device-tree changes, there's also a fair amount of
those in this branch.
Pieces worth mentioning are:
- Mbus driver for Marvell platforms, allowing kernel configuration
and resource allocation of on-chip peripherals.
- Enablement of the mbus infrastructure from Marvell PCI-e drivers.
- Preparation of MSI support for Marvell platforms.
- Addition of new PCI-e host controller driver for Tegra platforms
- Some churn caused by sharing of macro names between i.MX 6Q and 6DL
platforms in the device tree sources and header files.
- Various suspend/PM updates for Tegra, including LP1 support.
- Versatile Express support for MCPM, part of big little support.
- Allwinner platform support for A20 and A31 SoCs (dual and quad
Cortex-A7)
- OMAP2+ support for DRA7, a new Cortex-A15-based SoC.
The code that touches other architectures are patches moving MSI
arch-specific functions over to weak symbols and removal of
ARCH_SUPPORTS_MSI, acked by PCI maintainers"
* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (266 commits)
tegra-cpuidle: provide stub when !CONFIG_CPU_IDLE
PCI: tegra: replace devm_request_and_ioremap by devm_ioremap_resource
ARM: tegra: Drop ARCH_SUPPORTS_MSI and sort list
ARM: dts: vf610-twr: enable i2c0 device
ARM: dts: i.MX51: Add one more I2C2 pinmux entry
ARM: dts: i.MX51: Move pins configuration under "iomuxc" label
ARM: dtsi: imx6qdl-sabresd: Add USB OTG vbus pin to pinctrl_hog
ARM: dtsi: imx6qdl-sabresd: Add USB host 1 VBUS regulator
ARM: dts: imx27-phytec-phycore-som: Enable AUDMUX
ARM: dts: i.MX27: Disable AUDMUX in the template
ARM: dts: wandboard: Add support for SDIO bcm4329
ARM: i.MX5 clocks: Remove optional clock setup (CKIH1) from i.MX51 template
ARM: dts: imx53-qsb: Make USBH1 functional
ARM i.MX6Q: dts: Enable I2C1 with EEPROM and PMIC on Phytec phyFLEX-i.MX6 Ouad module
ARM i.MX6Q: dts: Enable SPI NOR flash on Phytec phyFLEX-i.MX6 Ouad module
ARM: dts: imx6qdl-sabresd: Add touchscreen support
ARM: imx: add ocram clock for imx53
ARM: dts: imx: ocram size is different between imx6q and imx6dl
ARM: dts: imx27-phytec-phycore-som: Fix regulator settings
ARM: dts: i.MX27: Remove clock name from CPU node
...
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A recent patch made it possible to bring up the character handle when the
device is responsive but not accepting a set-features command. Another
recent patch moved the initialization that requires we move where the
checks for this condition occur. This patch merges these two ideas so
it works much as before.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC DT updates from Olof Johansson:
"Device tree and bindings updates for 3.12.
General additions of various on-chip and on-board peripherals on
various platforms as support gets added. Some of the bigger changes
are:
- Addition of (new) PCI-e support on Tegra.
- More Tegra4 support, including PMC configuration for Dalmore.
- Addition of a new board for Exynos4 (trats2) and more bindings for
4x12 IP.
- Addition of Allwinner A20 and A31 SoC and board files.
- Move of the ST Ericsson device tree files to now use ste-* prefix.
- More move of hardware description of shmobile platforms to DT.
- Two new board dts files for Freescale MXs"
* tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (177 commits)
dts: Rename DW APB timer compatible strings
dts: Deprecate ALTR as a vendor prefix
of: add vendor prefix for Altera Corp.
ARM: at91/dt: sam9x5ek: add sound configuration
ARM: at91/dt: sam9x5ek: enable SSC
ARM: at91/dt: sam9x5ek: add WM8731 codec
ARM: at91/dt: sam9x5: add SSC DMA parameters
ARM: at91/dt: add at91rm9200 PQFP package version
ARM: at91: at91rm9200: set default mmc0 pinctrl-names
ARM: at91: at91sam9n12: correct pin number of gpio-key
ARM: at91: at91sam9n12: add qt1070 support
ARM: at91: at91sam9n12: add pinctrl of TWI
ARM: at91: Add PMU support for sama5d3
ARM: at91: at91sam9260: add missing pinctrl-names on mmc
ARM: tegra: configure power off for Dalmore
ARM: DT: binding fixup to align with vendor-prefixes.txt (DT)
ARM: dts: add sdio blocks to bcm28155-ap board
ARM: dts: align sdio numbers to HW definition
ARM: sun7i: Add Olimex A20-Olinuxino-Micro support
ARM: sun7i: Add Allwinner A20 DTSI
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups from Olof Johansson:
"This branch contains code cleanups, moves and removals for 3.12.
There's a large number of various cleanups, and a nice net removal of
13500 lines of code.
Highlights worth mentioning are:
- A series of patches from Stephen Boyd removing the ARM local timer
API.
- Move of Qualcomm MSM IOMMU code to drivers/iommu.
- Samsung PWM driver cleanups from Tomasz Figa, removing legacy PWM
driver and switching over to the drivers/pwm one.
- Removal of some unusued auto-generated headers for OMAP2+ (PRM/CM).
There's also a move of a header file out of include/linux/i2c/ to
platform_data, where it really belongs. It touches mostly ARM
platform code for include changes so we took it through our tree"
* tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (83 commits)
ARM: OMAP2+: Add back the define for AM33XX_RST_GLOBAL_WARM_SW_MASK
gpio: (gpio-pca953x) move header to linux/platform_data/
arm: zynq: hotplug: Remove unreachable code
ARM: SAMSUNG: Remove unnecessary exynos4_default_sdhci*()
tegra: simplify use of devm_ioremap_resource
ARM: SAMSUNG: Remove plat/regs-timer.h header
ARM: SAMSUNG: Remove remaining uses of plat/regs-timer.h header
ARM: SAMSUNG: Remove pwm-clock infrastructure
ARM: SAMSUNG: Remove old PWM timer platform devices
pwm: Remove superseded pwm-samsung-legacy driver
ARM: SAMSUNG: Modify board files to use new PWM platform device
ARM: SAMSUNG: Rework private data handling in dev-backlight
pwm: Add new pwm-samsung driver
ARM: mach-mvebu: remove redundant DT parsing and validation
ARM: msm: Only compile io.c on platforms that use it
iommu/msm: Move mach includes to iommu directory
ARM: msm: Remove devices-iommu.c
ARM: msm: Move mach/board.h contents to common.h
ARM: msm: Migrate msm_timer to CLOCKSOURCE_OF_DECLARE
ARM: msm: Remove TMR and TMR0 static mappings
...
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