linux-stable.git/fs/ufs, branch linux-4.1.y Linux kernel stable tree ufs: set correct ->s_maxsize 2017-06-26T02:02:19+00:00 Al Viro viro@zeniv.linux.org.uk 2017-06-09T01:15:45+00:00 c58e11d1da359ae5c4a277af18beacfb2e0bffa5 [ Upstream commit 6b0d144fa758869bdd652c50aa41aaf601232550 ] Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> 
[ Upstream commit 6b0d144fa758869bdd652c50aa41aaf601232550 ]

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
fix ufs_isblockset() 2017-06-26T02:02:19+00:00 Al Viro viro@zeniv.linux.org.uk 2017-06-08T22:15:18+00:00 7ba100d53ebce07b612520d06f7432be8a5126dc [ Upstream commit 414cf7186dbec29bd946c138d6b5c09da5955a08 ] Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> 
[ Upstream commit 414cf7186dbec29bd946c138d6b5c09da5955a08 ]

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
fs/ufs: Set UFS default maximum bytes per file 2017-06-25T04:25:35+00:00 Richard Narron comet.berkeley@gmail.com 2017-06-04T23:23:18+00:00 9fcaaa87e08c0f0917318a6cd96d591926f2304e [ Upstream commit 239e250e4acbc0104d514307029c0839e834a51a ] This fixes a problem with reading files larger than 2GB from a UFS-2 file system: https://bugzilla.kernel.org/show_bug.cgi?id=195721 The incorrect UFS s_maxsize limit became a problem as of commit c2a9737f45e2 ("vfs,mm: fix a dead loop in truncate_inode_pages_range()") which started using s_maxbytes to avoid a page index overflow in do_generic_file_read(). That caused files to be truncated on UFS-2 file systems because the default maximum file size is 2GB (MAX_NON_LFS) and UFS didn't update it. Here I simply increase the default to a common value used by other file systems. Signed-off-by: Richard Narron <comet.berkeley@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Will B <will.brokenbourgh2877@gmail.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: <stable@vger.kernel.org> # v4.9 and backports of c2a9737f45e2 Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> 
[ Upstream commit 239e250e4acbc0104d514307029c0839e834a51a ]

This fixes a problem with reading files larger than 2GB from a UFS-2
file system:

    https://bugzilla.kernel.org/show_bug.cgi?id=195721

The incorrect UFS s_maxsize limit became a problem as of commit
c2a9737f45e2 ("vfs,mm: fix a dead loop in truncate_inode_pages_range()")
which started using s_maxbytes to avoid a page index overflow in
do_generic_file_read().

That caused files to be truncated on UFS-2 file systems because the
default maximum file size is 2GB (MAX_NON_LFS) and UFS didn't update it.

Here I simply increase the default to a common value used by other file
systems.

Signed-off-by: Richard Narron <comet.berkeley@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Will B <will.brokenbourgh2877@gmail.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: <stable@vger.kernel.org> # v4.9 and backports of c2a9737f45e2
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
fs: Give dentry to inode_change_ok() instead of inode 2016-12-23T13:56:35+00:00 Jan Kara jack@suse.cz 2016-12-14T12:24:48+00:00 cb8e1eef351b640cfdb1a753ef44494fbf59186d [ Upstream commit 31051c85b5e2aaaf6315f74c72a732673632a905 ] inode_change_ok() will be resposible for clearing capabilities and IMA extended attributes and as such will need dentry. Give it as an argument to inode_change_ok() instead of an inode. Also rename inode_change_ok() to setattr_prepare() to better relect that it does also some modifications in addition to checks. References: CVE-2015-1350 Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Philipp Hahn <hahn@univention.de> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> 
[ Upstream commit 31051c85b5e2aaaf6315f74c72a732673632a905 ]

inode_change_ok() will be resposible for clearing capabilities and IMA
extended attributes and as such will need dentry. Give it as an argument
to inode_change_ok() instead of an inode. Also rename inode_change_ok()
to setattr_prepare() to better relect that it does also some
modifications in addition to checks.

References: CVE-2015-1350
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Philipp Hahn <hahn@univention.de>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
fs/ufs: restore s_lock mutex_init() 2015-07-10T16:49:39+00:00 Fabian Frederick fabf@skynet.be 2015-06-17T16:15:45+00:00 4e1fc88c6112cb9b691807cc4fe0b6bfa66b1e60 commit e4f95517f18271b1da36cfc5d700e46844396d6e upstream. Add last missing line in commit "cdd9eefdf905" ("fs/ufs: restore s_lock mutex") Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit e4f95517f18271b1da36cfc5d700e46844396d6e upstream.

Add last missing line in commit "cdd9eefdf905"
("fs/ufs: restore s_lock mutex")

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ufs: Fix possible deadlock when looking up directories 2015-07-10T16:49:39+00:00 Jan Kara jack@suse.cz 2015-06-02T09:26:34+00:00 b94332a90b6572713d0a4ca92563e9655a7dd33d commit 514d748f69c97a51a2645eb198ac5c6218f22ff9 upstream. Commit e4502c63f56aeca88 (ufs: deal with nfsd/iget races) made ufs create inodes with I_NEW flag set. However ufs_mkdir() never cleared this flag. Thus if someone ever tried to lookup the directory by inode number, he would deadlock waiting for I_NEW to be cleared. Luckily this mostly happens only if the filesystem is exported over NFS since otherwise we have the inode attached to dentry and don't look it up by inode number. In rare cases dentry can get freed without inode being freed and then we'd hit the deadlock even without NFS export. Fix the problem by clearing I_NEW before instantiating new directory inode. Fixes: e4502c63f56aeca887ced37f24e0def1ef11cec8 Reported-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 514d748f69c97a51a2645eb198ac5c6218f22ff9 upstream.

Commit e4502c63f56aeca88 (ufs: deal with nfsd/iget races) made ufs
create inodes with I_NEW flag set. However ufs_mkdir() never cleared
this flag. Thus if someone ever tried to lookup the directory by inode
number, he would deadlock waiting for I_NEW to be cleared. Luckily this
mostly happens only if the filesystem is exported over NFS since
otherwise we have the inode attached to dentry and don't look it up by
inode number. In rare cases dentry can get freed without inode being
freed and then we'd hit the deadlock even without NFS export.

Fix the problem by clearing I_NEW before instantiating new directory
inode.

Fixes: e4502c63f56aeca887ced37f24e0def1ef11cec8
Reported-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ufs: Fix warning from unlock_new_inode() 2015-07-10T16:49:39+00:00 Jan Kara jack@suse.cz 2015-06-01T12:52:04+00:00 918ef5dc2e9761f4cf34e8059e74cc2f834234ca commit 12ecbb4b1d765a5076920999298d9625439dbe58 upstream. Commit e4502c63f56aeca88 (ufs: deal with nfsd/iget races) introduced unlock_new_inode() call into ufs_add_nondir(). However that function gets called also from ufs_link() which hands it already initialized inode and thus unlock_new_inode() complains. The problem is harmless but annoying. Fix the problem by opencoding necessary stuff in ufs_link() Fixes: e4502c63f56aeca887ced37f24e0def1ef11cec8 Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 12ecbb4b1d765a5076920999298d9625439dbe58 upstream.

Commit e4502c63f56aeca88 (ufs: deal with nfsd/iget races) introduced
unlock_new_inode() call into ufs_add_nondir(). However that function
gets called also from ufs_link() which hands it already initialized
inode and thus unlock_new_inode() complains. The problem is harmless but
annoying.

Fix the problem by opencoding necessary stuff in ufs_link()

Fixes: e4502c63f56aeca887ced37f24e0def1ef11cec8
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/ufs: restore s_lock mutex 2015-07-10T16:49:38+00:00 Fabian Frederick fabf@skynet.be 2015-06-10T00:09:32+00:00 0da5a72210cbe177ab1043be058403ca49eb7a2b commit cdd9eefdf905e92e7fc6cc393314efe68dc6ff66 upstream. Commit 0244756edc4b98c ("ufs: sb mutex merge + mutex_destroy") generated deadlocks in read/write mode on mkdir. This patch partially reverts it keeping fixes by Andrew Morton and mutex_destroy() [AV: fixed a missing bit in ufs_remount()] Signed-off-by: Fabian Frederick <fabf@skynet.be> Reported-by: Ian Campbell <ian.campbell@citrix.com> Suggested-by: Jan Kara <jack@suse.cz> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: Evgeniy Dushistov <dushistov@mail.ru> Cc: Alexey Khoroshilov <khoroshilov@ispras.ru> Cc: Roger Pau Monne <roger.pau@citrix.com> Cc: Ian Jackson <Ian.Jackson@eu.citrix.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit cdd9eefdf905e92e7fc6cc393314efe68dc6ff66 upstream.

Commit 0244756edc4b98c ("ufs: sb mutex merge + mutex_destroy") generated
deadlocks in read/write mode on mkdir.

This patch partially reverts it keeping fixes by Andrew Morton and
mutex_destroy()

[AV: fixed a missing bit in ufs_remount()]

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Reported-by: Ian Campbell <ian.campbell@citrix.com>
Suggested-by: Jan Kara <jack@suse.cz>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Evgeniy Dushistov <dushistov@mail.ru>
Cc: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Roger Pau Monne <roger.pau@citrix.com>
Cc: Ian Jackson <Ian.Jackson@eu.citrix.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/ufs: revert "ufs: fix deadlocks introduced by sb mutex merge" 2015-07-10T16:49:38+00:00 Fabian Frederick fabf@skynet.be 2015-06-10T00:09:32+00:00 60c92e3205a6eb78c7970bf370cc9c550bd0c132 commit 13b987ea275840d74d9df9a44326632fab1894da upstream. This reverts commit 9ef7db7f38d0 ("ufs: fix deadlocks introduced by sb mutex merge") That patch tried to solve commit 0244756edc4b98c ("ufs: sb mutex merge + mutex_destroy") which is itself partially reverted due to multiple deadlocks. Signed-off-by: Fabian Frederick <fabf@skynet.be> Suggested-by: Jan Kara <jack@suse.cz> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: Evgeniy Dushistov <dushistov@mail.ru> Cc: Alexey Khoroshilov <khoroshilov@ispras.ru> Cc: Roger Pau Monne <roger.pau@citrix.com> Cc: Ian Jackson <Ian.Jackson@eu.citrix.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 13b987ea275840d74d9df9a44326632fab1894da upstream.

This reverts commit 9ef7db7f38d0 ("ufs: fix deadlocks introduced by sb
mutex merge") That patch tried to solve commit 0244756edc4b98c ("ufs: sb
mutex merge + mutex_destroy") which is itself partially reverted due to
multiple deadlocks.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Suggested-by: Jan Kara <jack@suse.cz>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Evgeniy Dushistov <dushistov@mail.ru>
Cc: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Roger Pau Monne <roger.pau@citrix.com>
Cc: Ian Jackson <Ian.Jackson@eu.citrix.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15T19:06:57+00:00 David Howells dhowells@redhat.com 2015-03-17T22:25:59+00:00 2b0143b5c986be1ce8408b3aadc4709e0a94429d that's the bulk of filesystem drivers dealing with inodes of their own Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
that's the bulk of filesystem drivers dealing with inodes of their own

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>