* 'for-2.6.36' of git://linux-nfs.org/~bfields/linux: (34 commits)
nfsd4: fix file open accounting for RDWR opens
nfsd: don't allow setting maxblksize after svc created
nfsd: initialize nfsd versions before creating svc
net: sunrpc: removed duplicated #include
nfsd41: Fix a crash when a callback is retried
nfsd: fix startup/shutdown order bug
nfsd: minor nfsd read api cleanup
gcc-4.6: nfsd: fix initialized but not read warnings
nfsd4: share file descriptors between stateid's
nfsd4: fix openmode checking on IO using lock stateid
nfsd4: miscellaneous process_open2 cleanup
nfsd4: don't pretend to support write delegations
nfsd: bypass readahead cache when have struct file
nfsd: minor nfsd_svc() cleanup
nfsd: move more into nfsd_startup()
nfsd: just keep single lockd reference for nfsd
nfsd: clean up nfsd_create_serv error handling
nfsd: fix error handling in __write_ports_addxprt
nfsd: fix error handling when starting nfsd with rpcbind down
nfsd4: fix v4 state shutdown error paths
...
Fix the module init error handling. There are a bunch of goto labels for
aborting the init procedure at different points and just undoing what needs
undoing - they aren't all in the right places, however.
This can lead to an oops like the following:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
IP: [<ffffffff81042a31>] destroy_workqueue+0x17/0xc0
...
Modules linked in: kafs(+) dns_resolver rxkad af_rxrpc fscache
Pid: 2171, comm: insmod Not tainted 2.6.35-cachefs+ #319 DG965RY/
...
Process insmod (pid: 2171, threadinfo ffff88003ca6a000, task ffff88003dcc3050)
...
Call Trace:
[<ffffffffa0055994>] afs_callback_update_kill+0x10/0x12 [kafs]
[<ffffffffa007d1c5>] afs_init+0x190/0x1ce [kafs]
[<ffffffffa007d035>] ? afs_init+0x0/0x1ce [kafs]
[<ffffffff810001ef>] do_one_initcall+0x59/0x14e
[<ffffffff8105f7ee>] sys_init_module+0x9c/0x1de
[<ffffffff81001eab>] system_call_fastpath+0x16/0x1b
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'nfs-for-2.6.36' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (42 commits)
NFS: NFSv4.1 is no longer a "developer only" feature
NFS: NFS_V4 is no longer an EXPERIMENTAL feature
NFS: Fix /proc/mount for legacy binary interface
NFS: Fix the locking in nfs4_callback_getattr
SUNRPC: Defer deleting the security context until gss_do_free_ctx()
SUNRPC: prevent task_cleanup running on freed xprt
SUNRPC: Reduce asynchronous RPC task stack usage
SUNRPC: Move the bound cred to struct rpc_rqst
SUNRPC: Clean up of rpc_bindcred()
SUNRPC: Move remaining RPC client related task initialisation into clnt.c
SUNRPC: Ensure that rpc_exit() always wakes up a sleeping task
SUNRPC: Make the credential cache hashtable size configurable
SUNRPC: Store the hashtable size in struct rpc_cred_cache
NFS: Ensure the AUTH_UNIX credcache is allocated dynamically
NFS: Fix the NFS users of rpc_restart_call()
SUNRPC: The function rpc_restart_call() should return success/failure
NFSv4: Get rid of the bogus RPC_ASSASSINATED(task) checks
NFSv4: Clean up the process of renewing the NFSv4 lease
NFSv4.1: Handle NFS4ERR_DELAY on SEQUENCE correctly
NFS: nfs_rename() should not have to flush out writebacks
...
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: (45 commits)
nilfs2: reject filesystem with unsupported block size
nilfs2: avoid rec_len overflow with 64KB block size
nilfs2: simplify nilfs_get_page function
nilfs2: reject incompatible filesystem
nilfs2: add feature set fields to super block
nilfs2: clarify byte offset in super block format
nilfs2: apply read-ahead for nilfs_btree_lookup_contig
nilfs2: introduce check flag to btree node buffer
nilfs2: add btree get block function with readahead option
nilfs2: add read ahead mode to nilfs_btnode_submit_block
nilfs2: fix buffer head leak in nilfs_btnode_submit_block
nilfs2: eliminate inline keywords in btree implementation
nilfs2: get maximum number of child nodes from bmap object
nilfs2: reduce repetitive calculation of max number of child nodes
nilfs2: optimize calculation of min/max number of btree node children
nilfs2: remove redundant pointer checks in bmap lookup functions
nilfs2: get rid of nilfs_bmap_union
nilfs2: unify bmap set_target_v operations
nilfs2: get rid of nilfs_btree uses
nilfs2: get rid of nilfs_direct uses
...
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (40 commits)
ext4: Adding error check after calling ext4_mb_regular_allocator()
ext4: Fix dirtying of journalled buffers in data=journal mode
ext4: re-inline ext4_rec_len_(to|from)_disk functions
jbd2: Remove t_handle_lock from start_this_handle()
jbd2: Change j_state_lock to be a rwlock_t
jbd2: Use atomic variables to avoid taking t_handle_lock in jbd2_journal_stop
ext4: Add mount options in superblock
ext4: force block allocation on quota_off
ext4: fix freeze deadlock under IO
ext4: drop inode from orphan list if ext4_delete_inode() fails
ext4: check to make make sure bd_dev is set before dereferencing it
jbd2: Make barrier messages less scary
ext4: don't print scary messages for allocation failures post-abort
ext4: fix EFBIG edge case when writing to large non-extent file
ext4: fix ext4_get_blocks references
ext4: Always journal quota file modifications
ext4: Fix potential memory leak in ext4_fill_super
ext4: Don't error out the fs if the user tries to make a file too big
ext4: allocate stripe-multiple IOs on stripe boundaries
ext4: move aio completion after unwritten extent conversion
...
Fix up conflicts in fs/ext4/inode.c as per Ted.
Fix up xfs conflicts as per earlier xfs merge.
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6:
ext3: Fix dirtying of journalled buffers in data=journal mode
ext3: default to ordered mode
quota: Use mark_inode_dirty_sync instead of mark_inode_dirty
quota: Change quota error message to print out disk and function name
MAINTAINERS: Update entries of ext2 and ext3
MAINTAINERS: Update address of Andreas Dilger
ext3: Avoid filesystem corruption after a crash under heavy delete load
ext3: remove vestiges of nobh support
ext3: Fix set but unused variables
quota: clean up quota active checks
quota: Clean up the namespace in dqblk_xfs.h
quota: check quota reservation on remove_dquot_ref
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
fs/dlm: Drop unnecessary null test
dlm: use genl_register_family_with_ops()
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6:
udf: super.c Fix warning: variable 'sbi' set but not used
udf: remove duplicated #include
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
[DNS RESOLVER] Minor typo correction
DNS: Fixes for the DNS query module
cifs: Include linux/err.h for IS_ERR and PTR_ERR
DNS: Make AFS go to the DNS for AFSDB records for unknown cells
DNS: Separate out CIFS DNS Resolver code
cifs: account for new creduid=0x%x parameter in spnego upcall string
cifs: reduce false positives with inode aliasing serverino autodisable
CIFS: Make cifs_convert_address() take a const src pointer and a length
cifs: show features compiled in as part of DebugData
cifs: update README
Fix up trivial conflicts in fs/cifs/cifsfs.c due to workqueue changes
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (55 commits)
workqueue: mark init_workqueues() as early_initcall()
workqueue: explain for_each_*cwq_cpu() iterators
fscache: fix build on !CONFIG_SYSCTL
slow-work: kill it
gfs2: use workqueue instead of slow-work
drm: use workqueue instead of slow-work
cifs: use workqueue instead of slow-work
fscache: drop references to slow-work
fscache: convert operation to use workqueue instead of slow-work
fscache: convert object to use workqueue instead of slow-work
workqueue: fix how cpu number is stored in work->data
workqueue: fix mayday_mask handling on UP
workqueue: fix build problem on !CONFIG_SMP
workqueue: fix locking in retry path of maybe_create_worker()
async: use workqueue for worker pool
workqueue: remove WQ_SINGLE_CPU and use WQ_UNBOUND instead
workqueue: implement unbound workqueue
workqueue: prepare for WQ_UNBOUND implementation
libata: take advantage of cmwq and remove concurrency limitations
workqueue: fix worker management invocation without pending works
...
Fixed up conflicts in fs/cifs/* as per Tejun. Other trivial conflicts in
include/linux/workqueue.h, kernel/trace/Kconfig and kernel/workqueue.c
Commit f9d7562fdb "nfsd4: share file
descriptors between stateid's" didn't correctly account for O_RDWR opens.
Symptoms include leaked files, resulting in failures to unmount and/or
warnings about orphaned inodes on reboot.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* 'x86-xsave-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, xsave: Make xstate_enable_boot_cpu() __init, protect on CPU 0
x86, xsave: Add __init attribute to setup_xstate_features()
x86, xsave: Make init_xstate_buf static
x86, xsave: Check cpuid level for XSTATE_CPUID (0x0d)
x86, xsave: Introduce xstate enable functions
x86, xsave: Separate fpu and xsave initialization
x86, xsave: Move boot cpu initialization to xsave_init()
x86, xsave: 32/64 bit boot cpu check unification in initialization
x86, xsave: Do not include asm/i387.h in asm/xsave.h
x86, xsave: Use xsaveopt in context-switch path when supported
x86, xsave: Sync xsave memory layout with its header for user handling
x86, xsave: Track the offset, size of state in the xsave layout
* 'x86-olpc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, olpc: Constify an olpc_ofw() arg
x86, olpc: Use pr_debug() for EC commands
x86, olpc: Add comment about implicit optimization barrier
x86, olpc: Add support for calling into OpenFirmware
* 'x86-alternatives-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, alternatives: BUG on encountering an invalid CPU feature number
x86, alternatives: Fix one more open-coded 8-bit alternative number
x86, alternatives: Use 16-bit numbers for cpufeature index
* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Clean up arch/x86/kernel/cpu/mtrr/cleanup.c: use ";" not "," to terminate statements
* 'x86-vmware-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, vmware: Preset lpj values when on VMware.
* 'x86-mtrr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, mtrr: Use stop machine context to rendezvous all the cpu's
* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86/apic/es7000_32: Remove unused variable
* 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Avoid unnecessary __clear_user() and xrstor in signal handling
* 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, vdso: Unmap vdso pages
Fix build error caused by a stale security/selinux/av_permissions.h in the $(src)
directory which will override a more recent version in $(obj) that is it
appears to strike only when building with a separate object directory.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
It's harmless to set this after the server is created, but also
ineffective, since the value is only used at the time of
svc_create_pooled(). So fail the attempt, in keeping with the pattern
set by write_versions, write_{lease,grace}time and write_recoverydir.
(This could break userspace that tried to write to nfsd/max_block_size
between setting up sockets and starting the server. However, such code
wouldn't have worked anyway, and I don't know of any examples--rpc.nfsd
in nfs-utils, probably the only user of the interface, doesn't do that.)
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Commit 59db4a0c10 "nfsd: move more into
nfsd_startup()" inadvertently moved nfsd_versions after
nfsd_create_svc(). On older distributions using an rpc.nfsd that does
not explicitly set the list of nfsd versions, this results in
svc-create_pooled() being called with an empty versions array. The
resulting incomplete initialization leads to a NULL dereference in
svc_process_common() the first time a client accesses the server.
Move nfsd_reset_versions() back before the svc_create_pooled(); this
time, put it closer to the svc_create_pooled() call, to make this
mistake more difficult in the future.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
If a callback is retried at nfsd4_cb_recall_done() due to
some error, the returned rpc reply crashes here:
@@ -514,6 +514,7 @@ decode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_cb_sequence *res,
u32 dummy;
__be32 *p;
+ BUG_ON(!res);
if (res->cbs_minorversion == 0)
return 0;
[BUG_ON added for demonstration]
This is because the nfsd4_cb_done_sequence() has NULLed out
the task->tk_msg.rpc_resp pointer.
Also eventually the rpc would use the new slot without making
sure it is free by calling nfsd41_cb_setup_sequence().
This problem was introduced by a 4.1 protocol addition patch:
[0421b5c5] nfsd41: Backchannel: Implement cb_recall over NFSv4.1
Which was overlooking the possibility of an RPC callback retries.
For not-4.1 case redoing the _prepare is harmless.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
We must create the server before we can call init_socks or check the
number of threads.
Symptoms were a NULL pointer dereference in nfsd_svc(). Problem
identified by Jeff Layton.
Also fix a minor cleanup-on-error case in nfsd_startup().
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Linus Torvalds
David Howells
J. Bruce Fields
Ralf Baechle
J. Bruce Fields
Andrea Gelmini
Boaz Harrosh