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2008-10-27Switch to a valid email address...Alan Cox2-2/+2
Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-23[PATCH] move executable checking into ->permission()Miklos Szeredi1-0/+3
For execute permission on a regular files we need to check if file has any execute bits at all, regardless of capabilites. This check is normally performed by generic_permission() but was also added to the case when the filesystem defines its own ->permission() method. In the latter case the filesystem should be responsible for performing this check. Move the check from inode_permission() inside filesystems which are not calling generic_permission(). Create a helper function execute_ok() that returns true if the inode is a directory or if any execute bits are present in i_mode. Also fix up the following code: - coda control file is never executable - sysctl files are never executable - hfs_permission seems broken on MAY_EXEC, remove - hfsplus_permission is eqivalent to generic_permission(), remove Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
2008-10-23[PATCH] switch all filesystems over to d_obtain_aliasChristoph Hellwig1-8/+6
Switch all users of d_alloc_anon to d_obtain_alias. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-23[PATCH] make O_EXCL in nd->intent.flags visible in nd->flagsAl Viro1-4/+2
New flag: LOOKUP_EXCL. Set before doing the final step of pathname resolution on the paths that have LOOKUP_CREATE and O_EXCL. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-20Merge git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds3-8/+21
* git://git.linux-nfs.org/projects/trondmy/nfs-2.6: NFS: use correct fs type for v4 submounts and referrals Make nfs_file_cred more robust. NFS: Enable NFSv4 callback server to listen on AF_INET6 sockets
2008-10-20vmscan: split LRU lists into anon & file setsRik van Riel1-1/+1
Split the LRU lists in two, one set for pages that are backed by real file systems ("file") and one for pages that are backed by memory and swap ("anon"). The latter includes tmpfs. The advantage of doing this is that the VM will not have to scan over lots of anonymous pages (which we generally do not want to swap out), just to find the page cache pages that it should evict. This patch has the infrastructure and a basic policy to balance how much we scan the anon lists and how much we scan the file lists. The big policy changes are in separate patches. [lee.schermerhorn@hp.com: collect lru meminfo statistics from correct offset] [kosaki.motohiro@jp.fujitsu.com: prevent incorrect oom under split_lru] [kosaki.motohiro@jp.fujitsu.com: fix pagevec_move_tail() doesn't treat unevictable page] [hugh@veritas.com: memcg swapbacked pages active] [hugh@veritas.com: splitlru: BDI_CAP_SWAP_BACKED] [akpm@linux-foundation.org: fix /proc/vmstat units] [nishimura@mxp.nes.nec.co.jp: memcg: fix handling of shmem migration] [kosaki.motohiro@jp.fujitsu.com: adjust Quicklists field of /proc/meminfo] [kosaki.motohiro@jp.fujitsu.com: fix style issue of get_scan_ratio()] Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-17NFS: use correct fs type for v4 submounts and referralsAndy Adamson1-2/+2
Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-17Make nfs_file_cred more robust.Neil Brown1-2/+4
As not all files have an associated open_context (e.g. device special files), it is safest to test for the existence of the open context before de-referencing it. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-17NFS: Enable NFSv4 callback server to listen on AF_INET6 socketsChuck Lever1-4/+15
Allow the NFS callback server to listen for requests via an AF_INET6 or AF_INET socket when IPv6 support is present in the kernel. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-15Merge branch 'next'Trond Myklebust14-211/+321
2008-10-14NFS: Fix a resolution problem with nfs_inode->cache_change_attributeTrond Myklebust2-2/+1
The cache_change_attribute is used to decide whether or not a directory has changed, in which case we may need to look it up again. Again, the use of 'jiffies' leads to an issue of resolution. Once again, the fix is to change nfs_inode->cache_change_attribute, and just make it a simple counter. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-14NFS: Fix the resolution problem with nfs_inode_attrs_need_update()Trond Myklebust2-11/+40
It appears that 'jiffies' timestamps do not have high enough resolution for nfs_inode_attrs_need_update(). One problem is that a GETATTR can be launched within < 1 jiffy of the last operation that updated the attribute. Another problem is that RPC calls can take < 1 jiffy to execute. We can fix this by switching the variables to use a simple global counter that gets incremented every time we start another GETATTR call. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-14NFS: Changes to inode->i_nlinks must set the NFS_INO_INVALID_ATTR flagTrond Myklebust1-0/+3
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-14Merge branch 'for-2.6.28' of git://linux-nfs.org/~bfields/linuxLinus Torvalds1-1/+2
* 'for-2.6.28' of git://linux-nfs.org/~bfields/linux: (59 commits) svcrdma: Fix IRD/ORD polarity svcrdma: Update svc_rdma_send_error to use DMA LKEY svcrdma: Modify the RPC reply path to use FRMR when available svcrdma: Modify the RPC recv path to use FRMR when available svcrdma: Add support to svc_rdma_send to handle chained WR svcrdma: Modify post recv path to use local dma key svcrdma: Add a service to register a Fast Reg MR with the device svcrdma: Query device for Fast Reg support during connection setup svcrdma: Add FRMR get/put services NLM: Remove unused argument from svc_addsock() function NLM: Remove "proto" argument from lockd_up() NLM: Always start both UDP and TCP listeners lockd: Remove unused fields in the nlm_reboot structure lockd: Add helper to sanity check incoming NOTIFY requests lockd: change nlmclnt_grant() to take a "struct sockaddr *" lockd: Adjust nlmsvc_lookup_host() to accomodate AF_INET6 addresses lockd: Adjust nlmclnt_lookup_host() signature to accomodate non-AF_INET lockd: Support non-AF_INET addresses in nlm_lookup_host() NLM: Convert nlm_lookup_host() to use a single argument svcrdma: Add Fast Reg MR Data Types ...
2008-10-13vfs: Use const for kernel parser tableSteven Whitehouse2-4/+4
This is a much better version of a previous patch to make the parser tables constant. Rather than changing the typedef, we put the "const" in all the various places where its required, allowing the __initconst exception for nfsroot which was the cause of the previous trouble. This was posted for review some time ago and I believe its been in -mm since then. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Alexander Viro <aviro@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-10NFS: fix nfs_parse_ip_address() corner caseChuck Lever1-11/+23
Bruce observed that nfs_parse_ip_address() will successfully parse an IPv6 address that looks like this: "::1%" A scope delimiter is present, but there is no scope ID following it. This is harmless, as it would simply set the scope ID to zero. However, in some cases we would like to flag this as an improperly formed address. We are now also careful to reject addresses where garbage follows the address (up to the length of the string), instead of ignoring the non-address characters; and where the scope ID is nonsense (not a valid device name, but also not numeric). Before, both of these cases would result in a harmless zero scope ID. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-10NFS: Cleanup nfs_set_portJ. Bruce Fields1-10/+9
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-09NFS: Fix attribute updatesTrond Myklebust1-9/+4
This fixes a regression seen when running the Connectathon testsuite against an ext3 filesystem. The reason was that the inode was constantly being marked as 'just updated' by the jiffy wraparound test. This again meant that newer GETATTR calls were failing to pass the nfs_inode_attrs_need_update() test unless the changes caused a ctime update on the server, since they were perceived as having been started before the latest inode update. Given that nfs_inode_attrs_need_update() already checks for wraparound of nfsi->last_updated, we can drop the buggy "protection" in nfs_update_inode(). Also make a slight micro-optimisation of nfs_inode_attrs_need_update(): we are more often going to see time_after(fattr->time_start, nfsi->last_updated) be true, rather than seeing an update of ctime/size, so put that test first to ensure that we optimise away the ctime/size tests. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07NFS: Don't use range_cyclic for data integrity syncsTrond Myklebust1-1/+2
It is more efficient to write linearly starting from the beginning of the file. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07NFS: Client mounts hang when exported directory do not existSteve Dickson1-1/+2
This patch fixes a regression that was introduced by the string based mounts. nfs_mount() statically returns -EACCES for every error returned by the remote mounted. This is incorrect because -EACCES is an non-fatal error to the mount.nfs command. This error causes mount.nfs to retry the mount even in the case when the exported directory does not exist. This patch maps the errors returned by the remote mountd into valid errno values, exactly how it was done pre-string based mounts. By returning the correct errno enables mount.nfs to do the right thing. Signed-off-by: Steve Dickson <steved@redhat.com> [Trond.Myklebust@netapp.com: nfs_stat_to_errno() now correctly returns negative errors, so remove the sign change.] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07nfs: Fix misparsing of nfsv4 fs_locations attributeJ. Bruce Fields3-29/+21
The code incorrectly assumes here that the server name (or ip address) is null-terminated. This can cause referrals to fail in some cases. Also support ipv6 addresses. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07nfs: prepare to share nfs_set_portJ. Bruce Fields2-19/+20
We plan to use this function elsewhere. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07nfs: replace while loop by for loops in nfs_follow_referralJ. Bruce Fields1-12/+5
Whoever wrote this had a bizarre allergy to for loops. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07nfs: break up nfs_follow_referralJ. Bruce Fields1-38/+46
This function is a little longer and more deeply nested than necessary. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07nfs: authenticated deep mountingEG Keizer2-4/+26
Allow mount to do authenticated mounts below the root of the exported tree. The wording in RFC 2623, sec 2.3.2. allows fsinfo with UNIX authentication on the root of the export. Mounts are not always done on the root of the exported tree. Especially autoumounts often mount below the root of the exported tree. Some server implementations (justly) require full authentication for the so-called deep mounts. The old code used AUTH_SYS only. This caused deep mounts to fail on systems requiring stronger authentication.. The client should try both authentication types and use the first one that succeeds. This method was already partially implemented. This patch completes the implementation for NFS2 and NFS3. This patch was developed to allow Debian systems to automount home directories on Solaris servers with krb5 authentication. Tested on kernel 2.6.24-etchnhalf.1 Signed-off-by: E.G. Keizer <keie@few.vu.nl> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07NFS: missing nfs_fattr_init in nfs3_proc_getacl and nfs3_proc_setacls ↵Jeff Layton1-0/+2
(resend #2) The fattrs used in the NFSv3 getacl/setacl calls are not being properly initialized. This occasionally causes nfs_update_inode to fall into NFSv4 specific codepaths when handling post-op attrs from these calls. Thanks to Cai Qian for noticing the spurious NFSv4 messages in debug output from a v3 mount... Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07nfs: remove an obsolete nfs_flock commentJ. Bruce Fields1-7/+0
We *do* now allow bsd flocks over nfs. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07nfs: BUG_ON in nfs_follow_mountpointDenis V. Lunev1-1/+4
Unfortunately, BUG_ON(IS_ROOT(dentry)) can happen inside nfs_follow_mountpoint with NFS running Fedora 8 using a specific setup. https://bugzilla.redhat.com/show_bug.cgi?id=458622 So, the situation should be handled on NFS client gracefully. Signed-off-by: Denis V. Lunev <den@openvz.org> CC: Trond Myklebust <Trond.Myklebust@netapp.com> CC: J. Bruce Fields <bfields@fieldses.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07nfs: ERR_PTR is expected on failure from nfs_do_clone_mountDenis V. Lunev1-1/+1
Replace NULL with ERR_PTR(-EINVAL). Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07fix fs/nfs/nfsroot.c compilationAdrian Bunk1-1/+1
This patch fixes the following compile error caused by commit f9247273cb69ba101877e946d2d83044409cc8c5 (UFS: add const to parser token tabl): <-- snip --> ... CC fs/nfs/nfsroot.o /home/bunk/linux/kernel-2.6/git/linux-2.6/fs/nfs/nfsroot.c:130: error: tokens causes a section type conflict make[3]: *** [fs/nfs/nfsroot.o] Error 1 <-- snip --> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07NFS: Allow concurrent inode revalidationTrond Myklebust1-41/+2
Currently, if two processes are both trying to revalidate metadata for the same inode, they will find themselves being serialised. There is no good justification for this now that we have improved our ability to detect stale attribute data, so we should remove that serialisation. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07NFS: Fix up nfs_setattr_update_inode()Trond Myklebust1-1/+1
Ensure that it sets the inode metadata under the correct spinlock. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07NFS: Don't clear nfsi->cache_validity in nfs_check_inode_attributes()Trond Myklebust1-7/+0
If we're merely checking the inode attributes because we suspect that the 'updated' attributes returned by the RPC call are stale, then we shouldn't be doing weak cache consistency updates or clearing the cache_validity flags. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07NFS: Convert __nfs_revalidate_inode() to use nfs_refresh_inode()Trond Myklebust1-4/+1
In the case where there are parallel RPC calls to the same inode, we may receive stale metadata due to the lack of ordering, hence the sanity checking of metadata in nfs_refresh_inode(). Currently, __nfs_revalidate_inode() is calling nfs_update_inode() directly, without any further sanity checks, and hence may end up setting the inode up with stale metadata. Fix is to use nfs_refresh_inode() instead of nfs_update_inode(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07NFS: Fix nfs_post_op_update_inode_force_wcc()Trond Myklebust1-8/+27
If we believe that the attributes are old (see nfs_refresh_inode()), then we shouldn't force an update. Also ensure that we hold the inode->i_lock across attribute checks and the call to nfs_refresh_inode_locked() to ensure that we don't race with other attribute updates. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07NFS: Fix the NFS attribute updateTrond Myklebust1-3/+41
Currently nfs_refresh_inode() will only update the inode metadata if it sees that the RPC call that returned the nfs_fattr was started after the last update of the inode. This means that if we have parallel RPC calls to the same inode (when sending WRITE calls, for instance), we may often miss updates. This patch attempts to recover those missed updates by also accepting them if the ctime in the nfs_fattr is more recent than the inode's cached ctime. It also recovers the case where the file size has increased, but the ctime has not been updated due to limited ctime resolution. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07NFS: Clean up nfs_refresh_inode() and nfs_post_op_update_inode()Trond Myklebust1-7/+14
Try to avoid taking and dropping the inode->i_lock more than once. Do so by moving the code in nfs_refresh_inode() that needs to be done under the spinlock into a function nfs_refresh_inode_locked(), and then having both nfs_refresh_inode() and nfs_post_op_update_inode() call it directly. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07NFS: Add mount options for controlling the lookup cacheTrond Myklebust1-0/+43
Add the following NFS-specific mount options to the parser. -o lookupcache=all /* Default: cache positive & negative dentries */ -o lookupcache=pos[itive] /* Don't cache negative dentries */ -o lookupcache=none /* Strict revalidation of all dentries */ Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07NFS: Don't apply NFS_MOUNT_FLAGMASK to text-based mountsTrond Myklebust2-3/+3
The point of introducing text-based mounts was to allow us to add functionality without having to worry about legacy binary mount formats. The mask should be there in order to ensure that binary formats don't start enabling features that they cannot support. There is no justification for applying it to the text mount path. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07NFS: Add options for finer control of the lookup cacheTrond Myklebust1-0/+4
Add the flag NFS_MOUNT_LOOKUP_CACHE_NONEG to turn off the caching of negative dentries. In reality what we do is to force nfs_lookup_revalidate() to always discard negative dentries. Add the flag NFS_MOUNT_LOOKUP_CACHE_NONE for enforcing stricter revalidation of dentries. It forces the revalidate code to always do a lookup instead of just checking the cached mtime of the parent directory. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-06NFS: Clean up nfs_sb_active/nfs_sb_deactiveTrond Myklebust4-21/+13
Instead of causing umount requests to block on server->active_wq while the asynchronous sillyrename deletes are executing, we can use the sb->s_active counter to obtain a reference to the super_block, and then release that reference in nfs_async_unlink_release(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-06NFS: Fix nfs_file_llseek()Trond Myklebust1-4/+7
After the BKL removal patches were applied to the rest of the NFS code, the BKL protection in nfs_file_llseek() is no longer sufficient to ensure that inode->i_size is read safely in generic_file_llseek_unlocked(). In order to fix the situation, we either have to replace the naked read of inode->i_size in generic_file_llseek_unlocked() with i_size_read(), or the whole thing needs to be executed under the inode->i_lock; In order to avoid disrupting other filesystems, avoid touching generic_file_llseek_unlocked() for now... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-09-29SUNRPC: Add address family field to svc_serv data structureChuck Lever1-1/+2
Introduce and initialize an address family field in the svc_serv structure. This field will determine what family to use for the service's listener sockets and what families are advertised via the local rpcbind daemon. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-09-08NFS: Restore missing hunk in NFS mount option parserChuck Lever1-0/+6
Automounter maps can contain mount options valid for other NFS implementations but not for Linux. The Linux automounter uses the mount command's "-s" command line option ("s" for "sloppy") so that mount requests containing such options are not rejected. Commit f45663ce5fb30f76a3414ab3ac69f4dd320e760a attempted to address a known regression with text-based NFS mount option parsing. Unrecognized mount options would cause mount requests to fail, even if the "-s" option was used on the mount command line. Unfortunately, this commit was not complete as submitted. It adds a new mount option, "sloppy". But it is missing a hunk, so it now allows NFS mounts with unrecognized mount options, even if the "sloppy" option is not present. This could be a problem if a required critical mount option such as "sync" is misspelled, for example, and is considered a regression from 2.6.26. This patch restores the missing hunk. Now, the default behavior of text-based NFS mount options is as before: any unrecognized mount option will cause the mount to fail. Please include this in 2.6.27-rc. Thanks to Neil Brown for reporting this. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Acked-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-04Revert "UFS: add const to parser token table"Linus Torvalds1-1/+1
This reverts commit f9247273cb69ba101877e946d2d83044409cc8c5 (and fb2e405fc1fc8b20d9c78eaa1c7fd5a297efde43 - "fix fs/nfs/nfsroot.c compilation" - that fixed a missed conversion). The changes cause problems for at least the sparc build. Let's re-do them when the exact issues are resolved. Requested-by: Andrew Morton <akpm@linux-foundation.org> Requested-by: Steven Whitehouse <swhiteho@redhat.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-01[PATCH] pass struct path * to do_add_mount()Al Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-07-27NFS: Ensure we call nfs_sb_deactive() after releasing the directory inodeTrond Myklebust1-1/+2
In order to avoid the "Busy inodes after unmount" error message, we need to ensure that nfs_async_unlink_release() releases the super block after the call to nfs_free_unlinkdata(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-27nfs_remount oops when rebooting + possible fixMarc Zyngier1-3/+3
Jeff, Trond, The commit 48b605f83c920d8daa50e43fc2c7f718e04c7bfa (NFS: implement option checking when remounting NFS filesystems (resend)) generate an Oops on my platform when rebooting while its root FS on an NFS share (NFSv3, TCP) : Unmounting local filesystems...done. Unable to handle kernel NULL pointer dereference at virtual address 00000000 pgd = c3d00000 [00000000] *pgd=a3d72031, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] Modules linked in: cpufreq_powersave cpufreq_ondemand cpufreq_userspace cpufreq_conservative ext3 jbd sd_mod pata_pcmcia libata scsi_mod pcmcia loop firmware_class pxafb cfbcopyarea cfbimgblt cfbfillrect pxa2xx_cs pxa2xx_core pcmcia_core snd_pxa2xx_ac97 snd_ac97_codec ac97_bus snd_pxa2xx_pcm snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd isp116x_hcd soundcore rtc_sa1100 snd_page_alloc pxa25x_udc usbcore rtc_ds1307 rtc_core CPU: 0 Not tainted (2.6.26-03414-g33af79d-dirty #15) PC is at nfs_remount+0x40/0x264 LR is at do_remount_sb+0x158/0x194 pc : [<c00bbf54>] lr : [<c0076c40>] psr: 60000013 sp : c2dd1e70 ip : c2dd1e98 fp : c2dd1e94 r10: 00000040 r9 : c3d17000 r8 : c3c3fc40 r7 : 00000000 r6 : 00000000 r5 : c3d2b200 r4 : 00000000 r3 : 00000003 r2 : 00000000 r1 : c2dd1e9c r0 : c3c3fc00 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 0000397f Table: a3d00000 DAC: 00000015 Process mount (pid: 1462, stack limit = 0xc2dd0270) Stack: (0xc2dd1e70 to 0xc2dd2000) 1e60: 00000000 c3c3fc00 00000000 00000000 1e80: c3c3fc40 c3d17000 c2dd1ebc c2dd1e98 c0076c40 c00bbf20 c01c61e4 00000001 1ea0: c2dd1ebc 00000001 c3c3fc00 c2dd1ef0 c2dd1ee4 c2dd1ec0 c008c6d8 c0076af4 1ec0: 00000021 00000040 c2dd1ef0 c3d77000 c3eaa000 00000000 c2dd1f6c c2dd1ee8 1ee0: c008d1bc c008c5f8 00000000 c2dd0000 c3c0c320 c3805b38 c002064c 0001f820 1f00: 0001f810 00000001 00000001 00000000 c2dd0000 00000000 c2dd1f34 c2dd1f28 1f20: c005ead8 c005e6f8 c2dd1f44 c2dd1f38 c005eaf8 c005ead0 c2dd1f6c c2dd1f48 1f40: c008ae3c 00000000 c3d77000 0001f810 c0ed0021 c0020ca8 c2dd0000 00000000 1f60: c2dd1fa4 c2dd1f70 c008d2d4 c008d0bc 00000000 0001f810 c2dd1f9c c3eaa000 1f80: c3d17000 00000000 00000000 be8b6aa8 be8b6ad0 00000015 00000000 c2dd1fa8 1fa0: c0020b00 c008d254 00000000 be8b6aa8 0001f810 0001f820 0001f830 c0ed0021 1fc0: 00000000 be8b6aa8 be8b6ad0 00000015 00000000 be8b6ad0 0001f810 be8b6aa8 1fe0: 0001f810 be8b6964 0000aab8 40125124 60000010 0001f810 00000000 00000000 Backtrace: [<c00bbf14>] (nfs_remount+0x0/0x264) from [<c0076c40>] (do_remount_sb+0x158/0x194) r9:c3d17000 r8:c3c3fc40 r7:00000000 r6:00000000 r5:c3c3fc00 r4:00000000 [<c0076ae8>] (do_remount_sb+0x0/0x194) from [<c008c6d8>] (do_remount+0xec/0x118) r6:c2dd1ef0 r5:c3c3fc00 r4:00000001 [<c008c5ec>] (do_remount+0x0/0x118) from [<c008d1bc>] (do_mount+0x10c/0x198) [<c008d0b0>] (do_mount+0x0/0x198) from [<c008d2d4>] (sys_mount+0x8c/0xd4) [<c008d248>] (sys_mount+0x0/0xd4) from [<c0020b00>] (ret_fast_syscall+0x0/0x2c) r7:00000015 r6:be8b6ad0 r5:be8b6aa8 r4:00000000 Code: 0a000086 ea000006 e3530003 8a000004 (e5923000) ---[ end trace 55e1b689cf8c8a6a ]--- ------------[ cut here ]------------ WARNING: at kernel/exit.c:966 do_exit+0x3c/0x628() Modules linked in: cpufreq_powersave cpufreq_ondemand cpufreq_userspace cpufreq_conservative ext3 jbd sd_mod pata_pcmcia libata scsi_mod pcmcia loop firmware_class pxafb cfbcopyarea cfbimgblt cfbfillrect pxa2xx_cs pxa2xx_core pcmcia_core snd_pxa2xx_ac97 snd_ac97_codec ac97_bus snd_pxa2xx_pcm snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd isp116x_hcd soundcore rtc_sa1100 snd_page_alloc pxa25x_udc usbcore rtc_ds1307 rtc_core [<c0025168>] (dump_stack+0x0/0x14) from [<c0032154>] (warn_on_slowpath+0x4c/0x68) [<c0032108>] (warn_on_slowpath+0x0/0x68) from [<c003531c>] (do_exit+0x3c/0x628) r6:0000000b r5:c3c3dc80 r4:c2dd0000 [<c00352e0>] (do_exit+0x0/0x628) from [<c0025004>] (die+0x2b0/0x30c) [<c0024d54>] (die+0x0/0x30c) from [<c00270bc>] (__do_kernel_fault+0x6c/0x80) [<c0027050>] (__do_kernel_fault+0x0/0x80) from [<c00272e0>] (do_page_fault+0x210/0x230) r7:c3fa7118 r6:c3c3dc80 r5:c3d166a8 r4:00010000 [<c00270d0>] (do_page_fault+0x0/0x230) from [<c00201ec>] (do_DataAbort+0x3c/0xa0) [<c00201b0>] (do_DataAbort+0x0/0xa0) from [<c002064c>] (__dabt_svc+0x4c/0x60) Exception stack(0xc2dd1e28 to 0xc2dd1e70) 1e20: c3c3fc00 c2dd1e9c 00000000 00000003 00000000 c3d2b200 1e40: 00000000 00000000 c3c3fc40 c3d17000 00000040 c2dd1e94 c2dd1e98 c2dd1e70 1e60: c0076c40 c00bbf54 60000013 ffffffff r8:c3c3fc40 r7:00000000 r6:00000000 r5:c2dd1e5c r4:ffffffff [<c00bbf14>] (nfs_remount+0x0/0x264) from [<c0076c40>] (do_remount_sb+0x158/0x194) r9:c3d17000 r8:c3c3fc40 r7:00000000 r6:00000000 r5:c3c3fc00 r4:00000000 [<c0076ae8>] (do_remount_sb+0x0/0x194) from [<c008c6d8>] (do_remount+0xec/0x118) r6:c2dd1ef0 r5:c3c3fc00 r4:00000001 [<c008c5ec>] (do_remount+0x0/0x118) from [<c008d1bc>] (do_mount+0x10c/0x198) [<c008d0b0>] (do_mount+0x0/0x198) from [<c008d2d4>] (sys_mount+0x8c/0xd4) [<c008d248>] (sys_mount+0x0/0xd4) from [<c0020b00>] (ret_fast_syscall+0x0/0x2c) r7:00000015 r6:be8b6ad0 r5:be8b6aa8 r4:00000000 ---[ end trace 55e1b689cf8c8a6a ]--- /etc/rc6.d/S60umountroot: line 17: 1462 Segmentation fault mount $MOUNT_FORCE_OPT -n -o remount,ro -t dummytype dummydev / 2> /dev/null The new super.c:nfs_remount function doesn't check the validity of the options/options4 pointers. Unfortunately, this seems to happend. The obvious patch seems to check the pointers, and not to do anything if the happend to be NULL. Tested on an XScale PXA255 system, latest git. Regards, M. Signed-off-by: Marc Zyngier <marc.zyngier@altran.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-26[PATCH] sanitize ->permission() prototypeAl Viro1-6/+5
* kill nameidata * argument; map the 3 bits in ->flags anybody cares about to new MAY_... ones and pass with the mask. * kill redundant gfs2_iop_permission() * sanitize ecryptfs_permission() * fix remaining places where ->permission() instances might barf on new MAY_... found in mask. The obvious next target in that direction is permission(9) folded fix for nfs_permission() breakage from Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-07-26SL*B: drop kmem cache argument from constructorAlexey Dobriyan1-1/+1
Kmem cache passed to constructor is only needed for constructors that are themselves multiplexeres. Nobody uses this "feature", nor does anybody uses passed kmem cache in non-trivial way, so pass only pointer to object. Non-trivial places are: arch/powerpc/mm/init_64.c arch/powerpc/mm/hugetlbpage.c This is flag day, yes. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Christoph Lameter <cl@linux-foundation.org> Cc: Jon Tollefson <kniht@linux.vnet.ibm.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Matt Mackall <mpm@selenic.com> [akpm@linux-foundation.org: fix arch/powerpc/mm/hugetlbpage.c] [akpm@linux-foundation.org: fix mm/slab.c] [akpm@linux-foundation.org: fix ubifs] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 05:46:04 +0000