Fix a deadlock in the new for 4.19 dax_lock_mapping_entry() routine.
-----BEGIN PGP SIGNATURE-----
iQIcBAABAgAGBQJbsDBrAAoJEB7SkWpmfYgCi54QAIz8yFZI5+5+amG/L/F9mGe4
sagcSPsk67EzzTDhnKASTlRmpm0+LWzQckY7o/fDRoM0VQVKjXVDke4VTDnHFg7W
JfZMN24dg6Pcbq3CxuSXMOiWd8vXSnLL2Myin+fQ/kY1rxnIz2ZYNWxCQsLvdPiC
VKJAbpYlcG41HZPPnRkMaRBxf2INUraSgyHFoehbgvlwLD7YUOzPh9strauutK5M
xljv2d/yjfaW4U6DhQhUSo+sDYRLGDkbqQw6ZoVqbODA0IXdY6ytiCujLLD9xODg
lDKF68jCX/+lFIURm8BRpX9iqHvfILC5el61a4bTxjJ6XUf+Ok5vgkeZFDfQKziC
rLqm09NTQ5Xu0MJ8Ql+5cqAFqBMA7Uy1zF6l8DnGFCtMV/S0H/TgdXWLzHjRXQvE
18ekLqTcRk5UmPXJYJ829ln0TKTd3zyuVgwuLuGAeO97m431y3K2Q74ncPahgE9+
W0nduPFTmMikohcKah2P3mQWGtUAYWodQsEs+Y9gJPyoDic+fmjo+mI0xg7CeFL4
kpfug45i8hdbnlHrHOJ6bz7fRq7CvaaRaI3gOvFfuN2TJVY8Qfs/8JD4HN8F7u+r
zDPVnvkutaYV1uOOBU4nDzPJ+naVGlpOj1/tsMU4ikj3LbfkfW+gxsr6XGZYPU81
qYjEfXm60ritFoAA5dVV
=3l8a
-----END PGP SIGNATURE-----
Merge tag 'libnvdimm-fixes2-4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Dan writes:
"filesystem-dax for 4.19-rc6
Fix a deadlock in the new for 4.19 dax_lock_mapping_entry() routine."
* tag 'libnvdimm-fixes2-4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
dax: Fix deadlock in dax_lock_mapping_entry()
When dax_lock_mapping_entry() has to sleep to obtain entry lock, it will
fail to unlock mapping->i_pages spinlock and thus immediately deadlock
against itself when retrying to grab the entry lock again. Fix the
problem by unlocking mapping->i_pages before retrying.
Fixes: c2a7d2a115 ("filesystem-dax: Introduce dax_lock_mapping_entry()")
Reported-by: Barret Rhoden <brho@google.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* (2) fixes for the dax error handling updates that were merged for
v4.19-rc1. My mails to Al have been bouncing recently, so I do not have
his ack but the uaccess change is of the trivial / obviously correct
variety. The address_space_operations fixes a regression.
* A filesystem-dax fix to correct the zero page lookup to be compatible
with non-x86 (mips and s390) architectures.
-----BEGIN PGP SIGNATURE-----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=mAaH
-----END PGP SIGNATURE-----
erge tag 'libnvdimm-fixes-4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Dan writes:
"libnvdimm/dax for 4.19-rc6
* (2) fixes for the dax error handling updates that were merged for
v4.19-rc1. My mails to Al have been bouncing recently, so I do not have
his ack but the uaccess change is of the trivial / obviously correct
variety. The address_space_operations fixes a regression.
* A filesystem-dax fix to correct the zero page lookup to be compatible
with non-x86 (mips and s390) architectures."
* tag 'libnvdimm-fixes-4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
device-dax: Add missing address_space_operations
uaccess: Fix is_source param for check_copy_size() in copy_to_iter_mcsafe()
filesystem-dax: Fix use of zero page
- A wrong UBIFS assertion in mount code
- Fix for a NULL pointer deref in mount code
- Revert of a bad fix for xattrs
-----BEGIN PGP SIGNATURE-----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=CGLq
-----END PGP SIGNATURE-----
Merge tag 'upstream-4.19-rc4' of git://git.infradead.org/linux-ubifs
Richard writes:
"This pull request contains fixes for UBIFS:
- A wrong UBIFS assertion in mount code
- Fix for a NULL pointer deref in mount code
- Revert of a bad fix for xattrs"
* tag 'upstream-4.19-rc4' of git://git.infradead.org/linux-ubifs:
Revert "ubifs: xattr: Don't operate on deleted inodes"
ubifs: drop false positive assertion
ubifs: Check for name being NULL while mounting
The 'm' kcore_list item could point to kclist_head, and it is incorrect to
look at m->addr / m->size in this case.
There is no choice but to run through the list of entries for every
address if we did not find any entry in the previous iteration
Reset 'm' to NULL in that case at Omar Sandoval's suggestion.
[akpm@linux-foundation.org: add comment]
Link: http://lkml.kernel.org/r/1536100702-28706-1-git-send-email-asmadeus@codewreck.org
Fixes: bf991c2231 ("proc/kcore: optimize multiple page reads")
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Omar Sandoval <osandov@osandov.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: James Morse <james.morse@arm.com>
Cc: Bhupesh Sharma <bhsharma@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 11a6fc3dc7.
UBIFS wants to assert that xattr operations are only issued on files
with positive link count. The said patch made this operations return
-ENOENT for unlinked files such that the asserts will no longer trigger.
This was wrong since xattr operations are perfectly fine on unlinked
files.
Instead the assertions need to be fixed/removed.
Cc: <stable@vger.kernel.org>
Fixes: 11a6fc3dc7 ("ubifs: xattr: Don't operate on deleted inodes")
Reported-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
Tested-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Richard Weinberger <richard@nod.at>
The following sequence triggers
ubifs_assert(c, c->lst.taken_empty_lebs > 0);
at the end of ubifs_remount_fs():
mount -t ubifs /dev/ubi0_0 /mnt
echo 1 > /sys/kernel/debug/ubifs/ubi0_0/ro_error
umount /mnt
mount -t ubifs -o ro /dev/ubix_y /mnt
mount -o remount,ro /mnt
The resulting
UBIFS assert failed in ubifs_remount_fs at 1878 (pid 161)
is a false positive. In the case above c->lst.taken_empty_lebs has
never been changed from its initial zero value. This will only happen
when the deferred recovery is done.
Fix this by doing the assertion only when recovery has been done
already.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
The requested device name can be NULL or an empty string.
Check for that and refuse to continue. UBIFS has to do this manually
since we cannot use mount_bdev(), which checks for this condition.
Fixes: 1e51764a3c ("UBIFS: add new flash file system")
Reported-by: syzbot+38bd0f7865e5c6379280@syzkaller.appspotmail.com
Signed-off-by: Richard Weinberger <richard@nod.at>
Sync syscall to DAX file needs to flush processor cache, but it
currently does not flush to existing DAX files. This is because
'ext2_da_aops' is set to address_space_operations of existing DAX
files, instead of 'ext2_dax_aops', since S_DAX flag is set after
ext2_set_aops() in the open path.
Similar to ext4, change ext2_iget() to initialize i_flags before
ext2_set_aops().
Fixes: fb094c9074 ("ext2, dax: introduce ext2_dax_aops")
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Suggested-by: Jan Kara <jack@suse.cz>
Cc: Jan Kara <jack@suse.cz>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
maliciously crafted file systems, and some DAX fixes.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAlufGncACgkQ8vlZVpUN
gaPwuQf9FKp9yRvjBkjtnH3+s4Ps8do9r067+90y1k2DJMxKoaBUhGSW2MJJ04j+
5F6Ndp/TZHw+LfPnzsqlrAAoP3CG5+kacfJ7xeVKR0umvACm6rLMsCUct7/rFoSl
PgzCALFIJvQ9+9shuO9qrgmjJrfrlTVUgR9Mu3WUNEvMFbMjk3FMI8gi5kjjWemE
G9TDYH2lMH2sL0cWF51I2gOyNXOXrihxe+vP7j6i/rUkV+YLpKZhE1ss3Sfn6pR2
p/KjnXdupLJpgYLJne9kMrq2r8xYmDfA0S+Dec7nkox5FUOFUHssl3+q8C7cDwO9
zl6VyVFwybjFRJ/Y59wox6eqVPlIWw==
=1P1w
-----END PGP SIGNATURE-----
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Ted writes:
Various ext4 bug fixes; primarily making ext4 more robust against
maliciously crafted file systems, and some DAX fixes.
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4, dax: set ext4_dax_aops for dax files
ext4, dax: add ext4_bmap to ext4_dax_aops
ext4: don't mark mmp buffer head dirty
ext4: show test_dummy_encryption mount option in /proc/mounts
ext4: close race between direct IO and ext4_break_layouts()
ext4: fix online resizing for bigalloc file systems with a 1k block size
ext4: fix online resize's handling of a too-small final block group
ext4: recalucate superblock checksum after updating free blocks/inodes
ext4: avoid arithemetic overflow that can trigger a BUG
ext4: avoid divide by zero fault when deleting corrupted inline directories
ext4: check to make sure the rename(2)'s destination is not freed
ext4: add nonstring annotations to ext4.h
Sync syscall to DAX file needs to flush processor cache, but it
currently does not flush to existing DAX files. This is because
'ext4_da_aops' is set to address_space_operations of existing DAX
files, instead of 'ext4_dax_aops', since S_DAX flag is set after
ext4_set_aops() in the open path.
New file
--------
lookup_open
ext4_create
__ext4_new_inode
ext4_set_inode_flags // Set S_DAX flag
ext4_set_aops // Set aops to ext4_dax_aops
Existing file
-------------
lookup_open
ext4_lookup
ext4_iget
ext4_set_aops // Set aops to ext4_da_aops
ext4_set_inode_flags // Set S_DAX flag
Change ext4_iget() to initialize i_flags before ext4_set_aops().
Fixes: 5f0663bb4a ("ext4, dax: introduce ext4_dax_aops")
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Suggested-by: Jan Kara <jack@suse.cz>
Cc: stable@vger.kernel.org
Ext4 mount path calls .bmap to the journal inode. This currently
works for the DAX mount case because ext4_iget() always set
'ext4_da_aops' to any regular files.
In preparation to fix ext4_iget() to set 'ext4_dax_aops' for ext4
DAX files, add ext4_bmap() to 'ext4_dax_aops', since bmap works for
DAX inodes.
Fixes: 5f0663bb4a ("ext4, dax: introduce ext4_dax_aops")
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Suggested-by: Jan Kara <jack@suse.cz>
Cc: stable@vger.kernel.org
Marking mmp bh dirty before writing it will make writeback
pick up mmp block later and submit a write, we don't want the
duplicate write as kmmpd thread should have full control of
reading and writing the mmp block.
Another reason is we will also have random I/O error on
the writeback request when blk integrity is enabled, because
kmmpd could modify the content of the mmp block(e.g. setting
new seq and time) while the mmp block is under I/O requested
by writeback.
Signed-off-by: Li Dongyang <dongyangli@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: stable@vger.kernel.org
When in effect, add "test_dummy_encryption" to _ext4_show_options() so
that it is shown in /proc/mounts and other relevant procfs files.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
-----BEGIN PGP SIGNATURE-----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=YNSx
-----END PGP SIGNATURE-----
Merge tag '4.19-rc3-smb3-cifs' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Fixes for four CIFS/SMB3 potential pointer overflow issues, one minor
build fix, and a build warning cleanup"
* tag '4.19-rc3-smb3-cifs' of git://git.samba.org/sfrench/cifs-2.6:
cifs: read overflow in is_valid_oplock_break()
cifs: integer overflow in in SMB2_ioctl()
CIFS: fix wrapping bugs in num_entries()
cifs: prevent integer overflow in nxt_dir_entry()
fs/cifs: require sha512
fs/cifs: suppress a string overflow warning
Stable bugfixes:
- v4.17+: Fix a tracepoint Oops in initiate_file_draining()
- v4.17+: Fix a tracepoint Oops in initiate_file_draining()
- v4.11+: Fix an infinite loop on I/O
Other fixes:
- Return errors if a waiting layoutget is killed
- Don't open code clearing of delegation state
-----BEGIN PGP SIGNATURE-----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=C83+
-----END PGP SIGNATURE-----
Merge tag 'nfs-for-4.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client bugfixes from Anna Schumaker:
"These are a handful of fixes for problems that Trond found. Patch #1
and #3 have the same name, a second issue was found after applying the
first patch.
Stable bugfixes:
- v4.17+: Fix tracepoint Oops in initiate_file_draining()
- v4.11+: Fix an infinite loop on I/O
Other fixes:
- Return errors if a waiting layoutget is killed
- Don't open code clearing of delegation state"
* tag 'nfs-for-4.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
NFS: Don't open code clearing of delegation state
NFSv4.1 fix infinite loop on I/O.
NFSv4: Fix a tracepoint Oops in initiate_file_draining()
pNFS: Ensure we return the error if someone kills a waiting layoutget
NFSv4: Fix a tracepoint Oops in initiate_file_draining()
Add a helper for the case when the nfs4 open state has been set to use
a delegation stateid, and we want to revert to using the open stateid.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
The previous fix broke recovery of delegated stateids because it assumes
that if we did not mark the delegation as suspect, then the delegation has
effectively been revoked, and so it removes that delegation irrespectively
of whether or not it is valid and still in use. While this is "mostly
harmless" for ordinary I/O, we've seen pNFS fail with LAYOUTGET spinning
in an infinite loop while complaining that we're using an invalid stateid
(in this case the all-zero stateid).
What we rather want to do here is ensure that the delegation is always
correctly marked as needing testing when that is the case. So we want
to close the loophole offered by nfs4_schedule_stateid_recovery(),
which marks the state as needing to be reclaimed, but not the
delegation that may be backing it.
Fixes: 0e3d3e5df0 ("NFSv4.1 fix infinite loop on IO BAD_STATEID error")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v4.11+
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Now that the value of 'ino' can be NULL or an ERR_PTR(), we need to
change the test in the tracepoint.
Fixes: ce5624f7e6 ("NFSv4: Return NFS4ERR_DELAY when a layout fails...")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v4.17+
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
If someone interrupts a wait on one or more outstanding layoutgets in
pnfs_update_layout() then return the ERESTARTSYS/EINTR error.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Now that the value of 'ino' can be NULL or an ERR_PTR(), we need to
change the test in the tracepoint.
Fixes: ce5624f7e6 ("NFSv4: Return NFS4ERR_DELAY when a layout fails...")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v4.17+
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQSQHSd0lITzzeNWNm3h3BK/laaZPAUCW5qpOgAKCRDh3BK/laaZ
PDCQAQCIKLg0aLeWOkfUO76mBjlp5srKgJfrqpFoyuozD6l2fQEAl/W2x9NOduV+
PK4sCYMT8SpI0hMrbv9P4zZ683kmaA8=
=RnZU
-----END PGP SIGNATURE-----
Merge tag 'ovl-fixes-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs fixes from Miklos Szeredi:
"This fixes a regression in the recent file stacking update, reported
and fixed by Amir Goldstein. The fix is fairly trivial, but involves
adding a fadvise() f_op and the associated churn in the vfs. As
discussed on -fsdevel, there are other possible uses for this method,
than allowing proper stacking for overlays.
And there's one other fix for a syzkaller detected oops"
* tag 'ovl-fixes-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: fix oopses in ovl_fill_super() failure paths
ovl: add ovl_fadvise()
vfs: implement readahead(2) using POSIX_FADV_WILLNEED
vfs: add the fadvise() file operation
Documentation/filesystems: update documentation of file_operations
ovl: fix GPF in swapfile_activate of file from overlayfs over xfs
ovl: respect FIEMAP_FLAG_SYNC flag
persistent_ram_vmap() returns the page start vaddr.
persistent_ram_iomap() supports non-page-aligned mapping.
persistent_ram_buffer_map() always adds offset-in-page to the vaddr
returned from these two functions, which causes incorrect mapping of
non-page-aligned persistent ram buffer.
By default ftrace_size is 4096 and max_ftrace_cnt is nr_cpu_ids. Without
this patch, the zone_sz in ramoops_init_przs() is 4096/nr_cpu_ids which
might not be page aligned. If the offset-in-page > 2048, the vaddr will be
in next page. If the next page is not mapped, it will cause kernel panic:
[ 0.074231] BUG: unable to handle kernel paging request at ffffa19e0081b000
...
[ 0.075000] RIP: 0010:persistent_ram_new+0x1f8/0x39f
...
[ 0.075000] Call Trace:
[ 0.075000] ramoops_init_przs.part.10.constprop.15+0x105/0x260
[ 0.075000] ramoops_probe+0x232/0x3a0
[ 0.075000] platform_drv_probe+0x3e/0xa0
[ 0.075000] driver_probe_device+0x2cd/0x400
[ 0.075000] __driver_attach+0xe4/0x110
[ 0.075000] ? driver_probe_device+0x400/0x400
[ 0.075000] bus_for_each_dev+0x70/0xa0
[ 0.075000] driver_attach+0x1e/0x20
[ 0.075000] bus_add_driver+0x159/0x230
[ 0.075000] ? do_early_param+0x95/0x95
[ 0.075000] driver_register+0x70/0xc0
[ 0.075000] ? init_pstore_fs+0x4d/0x4d
[ 0.075000] __platform_driver_register+0x36/0x40
[ 0.075000] ramoops_init+0x12f/0x131
[ 0.075000] do_one_initcall+0x4d/0x12c
[ 0.075000] ? do_early_param+0x95/0x95
[ 0.075000] kernel_init_freeable+0x19b/0x222
[ 0.075000] ? rest_init+0xbb/0xbb
[ 0.075000] kernel_init+0xe/0xfc
[ 0.075000] ret_from_fork+0x3a/0x50
Signed-off-by: Bin Yang <bin.yang@intel.com>
[kees: add comments describing the mapping differences, updated commit log]
Fixes: 24c3d2f342 ("staging: android: persistent_ram: Make it possible to use memory outside of bootmem")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
We need to verify that the "data_offset" is within bounds.
Reported-by: Dr Silvio Cesare of InfoSect <silvio.cesare@gmail.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
The "le32_to_cpu(rsp->OutputOffset) + *plen" addition can overflow and
wrap around to a smaller value which looks like it would lead to an
information leak.
Fixes: 4a72dafa19 ("SMB2 FSCTL and IOCTL worker function")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
CC: Stable <stable@vger.kernel.org>
The problem is that "entryptr + next_offset" and "entryptr + len + size"
can wrap. I ended up changing the type of "entryptr" because it makes
the math easier when we don't have to do so much casting.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
CC: Stable <stable@vger.kernel.org>
The "old_entry + le32_to_cpu(pDirInfo->NextEntryOffset)" can wrap
around so I have added a check for integer overflow.
Reported-by: Dr Silvio Cesare of InfoSect <silvio.cesare@gmail.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
Use my_zero_pfn instead of ZERO_PAGE(), and pass the vaddr to it instead
of zero so it works on MIPS and s390 who reference the vaddr to select a
zero page.
Cc: <stable@vger.kernel.org>
Fixes: 91d25ba8a6 ("dax: use common 4k zero page for dax mmap reads")
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
If the refcount of a page is lowered between the time that it is returned
by dax_busy_page() and when the refcount is again checked in
ext4_break_layouts() => ___wait_var_event(), the waiting function
ext4_wait_dax_page() will never be called. This means that
ext4_break_layouts() will still have 'retry' set to false, so we'll stop
looping and never check the refcount of other pages in this inode.
Instead, always continue looping as long as dax_layout_busy_page() gives us
a page which it found with an elevated refcount.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
ovl_free_fs() dereferences ofs->workbasedir and ofs->upper_mnt in cases when
those might not have been initialized yet.
Fix the initialization order for these fields.
Reported-by: syzbot+c75f181dc8429d2eb887@syzkaller.appspotmail.com
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: <stable@vger.kernel.org> # v4.15
Fixes: 95e6d4177c ("ovl: grab reference to workbasedir early")
Fixes: a9075cdb46 ("ovl: factor out ovl_free_fs() helper")
This got lost in commit 0fdfef9aa7,
which removed CONFIG_CIFS_SMB311.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Fixes: 0fdfef9aa7 ("smb3: simplify code by removing CONFIG_CIFS_SMB311")
CC: Stable <stable@vger.kernel.org>
CC: linux-cifs@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
A powerpc build of cifs with gcc v8.2.0 produces this warning:
fs/cifs/cifssmb.c: In function ‘CIFSSMBNegotiate’:
fs/cifs/cifssmb.c:605:3: warning: ‘strncpy’ writing 16 bytes into a region of size 1 overflows the destination [-Wstringop-overflow=]
strncpy(pSMB->DialectsArray+count, protocols[i].name, 16);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Since we are already doing a strlen() on the source, change the strncpy
to a memcpy().
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Steve French <stfrench@microsoft.com>
Fix the cell specification mechanism to allow cells to be pre-created
without having to specify at least one address (the addresses will be
upcalled for).
This allows the cell information preload service to avoid the need to issue
loads of DNS lookups during boot to get the addresses for each cell (500+
lookups for the 'standard' cell list[*]). The lookups can be done later as
each cell is accessed through the filesystem.
Also remove the print statement that prints a line every time a new cell is
added.
[*] There are 144 cells in the list. Each cell is first looked up for an
SRV record, and if that fails, for an AFSDB record. These get a list
of server names, each of which then has to be looked up to get the
addresses for that server. E.g.:
dig srv _afs3-vlserver._udp.grand.central.org
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
went into -rc1 and a use-after-free fix.
The rbd changes have been sitting in a branch for quite a while but
couldn't be included into the -rc1 pull request because of a pending
wire protocol backwards compatibility fixup that only got committed
early this week.
-----BEGIN PGP SIGNATURE-----
iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAluSrJYTHGlkcnlvbW92
QGdtYWlsLmNvbQAKCRBKf944AhHzi/N8B/4sZzRCJMCejvU/yRq91NlaPDrxbVHh
nfICZ/8Fsy/fmvK8NWNyHcCIWx+nWrbCvCJMj0fxWMhk/1t75yC+TdyCJnyuhsQU
V/CPTs9BTdwrSUiTB83/n/ukGL6mpESk0CQ1er/l1EO6FnNOXvgzHDnCqUQZLdzU
1aRcx5JQWWo/QlCmzt2KWENhfQRMvLAtf04F5cUuR+JTrMjwWia6MAuRGuOhVQkW
XIlFNakBKab89Vod1pmA7BrG/+sHXCpVGX6sjAp9vQUWO3WWKBRnNtVwo9dPSHah
hBR8IzOkihw7HfTlINWVpiR69nTfM80PQHXJkFSp36E6Sfq8EShRpFIZ
=pga5
-----END PGP SIGNATURE-----
Merge tag 'ceph-for-4.19-rc3' of https://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"Two rbd patches to complete support for images within namespaces that
went into -rc1 and a use-after-free fix.
The rbd changes have been sitting in a branch for quite a while but
couldn't be included into the -rc1 pull request because of a pending
wire protocol backwards compatibility fixup that only got committed
early this week"
* tag 'ceph-for-4.19-rc3' of https://github.com/ceph/ceph-client:
rbd: support cloning across namespaces
rbd: factor out get_parent_info()
ceph: avoid a use-after-free in ceph_destroy_options()
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAluSNfQACgkQnJ2qBz9k
QNloSAf/RpsqUnmQvJKK7hQUVNMCQP/Kf3KND5iN5RfMbhU9r7tzERkNvqhdA6QZ
uoPi8dEecI+ihY5F8ddyw1Chaou4MToWKdNz4ojwJXVrN6bb+pq+xj0hTvT5FjFh
iM1JXHtSEk6W+CnXPE5CycrZppIHxJfJxeaWg7av5Zyc4nkTesxtG8PycMBxROW8
detUcJt15VGBswi19udztf7XY/lwDwUQ9LwC0W5B+o8pKIwuN3ENMVVOeAriAyoy
hXTpPA8twBhM7i8D/1eppDCkYLTr08bquNsDpn8kUEf2RxcxiFJuDLOeXiH3sQRq
BZmf/QIIRA8R+SPeFiuxY/795FDC6Q==
=CWu1
-----END PGP SIGNATURE-----
Merge tag 'for_v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fsnotify fix from Jan Kara:
"A small fsnotify fix from Amir"
* tag 'for_v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fsnotify: fix ignore mask logic in fsnotify()
-----BEGIN PGP SIGNATURE-----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=WRXo
-----END PGP SIGNATURE-----
Merge tag '4.19-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Four small SMB3 fixes, three for stable, and one minor debug
clarification"
* tag '4.19-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: connect to servername instead of IP for IPC$ share
smb3: check for and properly advertise directory lease support
smb3: minor debugging clarifications in rfc1001 len processing
SMB3: Backup intent flag missing for directory opens with backupuid mounts
fs/cifs: don't translate SFM_SLASH (U+F026) to backslash
-----BEGIN PGP SIGNATURE-----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=fu93
-----END PGP SIGNATURE-----
Merge tag 'for-4.19-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- fix for improper fsync after hardlink
- fix for a corruption during file deduplication
- use after free fixes
- RCU warning fix
- fix for buffered write to nodatacow file
* tag 'for-4.19-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: Fix suspicious RCU usage warning in btrfs_debug_in_rcu
btrfs: use after free in btrfs_quota_enable
btrfs: btrfs_shrink_device should call commit transaction at the end
btrfs: fix qgroup_free wrong num_bytes in btrfs_subvolume_reserve_metadata
Btrfs: fix data corruption when deduplicating between different files
Btrfs: sync log after logging new name
Btrfs: fix unexpected failure of nocow buffered writes after snapshotting when low on space
syzbot reported a use-after-free in ceph_destroy_options(), called from
ceph_mount(). The problem was that create_fs_client() consumed the opt
pointer on some errors, but not on all of them. Make sure it always
consumes both libceph and ceph options.
Reported-by: syzbot+8ab6f1042021b4eed062@syzkaller.appspotmail.com
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Remove the verbose license text from NILFS2 files and replace them with
SPDX tags. This does not change the license of any of the code.
Link: http://lkml.kernel.org/r/1535624528-5982-1-git-send-email-konishi.ryusuke@lab.ntt.co.jp
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
An online resize of a file system with the bigalloc feature enabled
and a 1k block size would be refused since ext4_resize_begin() did not
understand s_first_data_block is 0 for all bigalloc file systems, even
when the block size is 1k.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
Avoid growing the file system to an extent so that the last block
group is too small to hold all of the metadata that must be stored in
the block group.
This problem can be triggered with the following reproducer:
umount /mnt
mke2fs -F -m0 -b 4096 -t ext4 -O resize_inode,^has_journal \
-E resize=1073741824 /tmp/foo.img 128M
mount /tmp/foo.img /mnt
truncate --size 1708M /tmp/foo.img
resize2fs /dev/loop0 295400
umount /mnt
e2fsck -fy /tmp/foo.img
Reported-by: Torsten Hilbrich <torsten.hilbrich@secunet.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
Commit 92183a4289 ("fsnotify: fix ignore mask logic in
send_to_group()") acknoledges the use case of ignoring an event on
an inode mark, because of an ignore mask on a mount mark of the same
group (i.e. I want to get all events on this file, except for the events
that came from that mount).
This change depends on correctly merging the inode marks and mount marks
group lists, so that the mount mark ignore mask would be tested in
send_to_group(). Alas, the merging of the lists did not take into
account the case where event in question is not in the mask of any of
the mount marks.
To fix this, completely remove the tests for inode and mount event masks
from the lists merging code.
Fixes: 92183a4289 ("fsnotify: fix ignore mask logic in send_to_group")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This patch is required allows access to a Microsoft fileserver failover
cluster behind a 1:1 NAT firewall.
The change also provides stronger context for authentication and share
connection (see MS-SMB2 3.3.5.7 and MS-SRVS 3.1.6.8) as noted by
Tom Talpey, and addresses comments about the buffer size for the UNC
made by Aurélien Aptel.
Signed-off-by: Thomas Werschlein <thomas.werschlein@geo.uzh.ch>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Tom Talpey <ttalpey@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
CC: Stable <stable@vger.kernel.org>
Although servers will typically ignore unsupported features,
we should advertise the support for directory leases (as
Windows e.g. does) in the negotiate protocol capabilities we
pass to the server, and should check for the server capability
(CAP_DIRECTORY_LEASING) before sending a lease request for an
open of a directory. This will prevent us from accidentally
sending directory leases to SMB2.1 or SMB2 server for example.
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
I ran into some cases where server was returning the wrong length
on frames but I couldn't easily match them to the command in the
network trace (or server logs) since I need the command and/or
multiplex id to find the offending SMB2/SMB3 command. Add these
two fields to the log message. In the case of padding too much
it may not be a problem in all cases but might have correlated
to a network disconnect case in some problems we have been
looking at. In the case of frame too short is even more important.
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
When "backup intent" is requested on the mount (e.g. backupuid or
backupgid mount options), the corresponding flag needs to be set
on opens of directories (and files) but was missing in some
places causing access denied trying to enumerate and backup
servers.
Fixes kernel bugzilla #200953https://bugzilla.kernel.org/show_bug.cgi?id=200953
Reported-and-tested-by: <whh@rubrik.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Greg Kroah-Hartman