Allow for MAINTAINERS to become a directory and if it is,
read all the files in the directory for maintained sections.
Optionally look for all files named MAINTAINERS in directories
excluding the .git directory by using --find-maintainer-files.
This optional feature adds ~.3 seconds of CPU on an Intel
i5-6200 with an SSD.
Miscellanea:
- Create a read_maintainer_file subroutine from the existing code
- Test only the existence of MAINTAINERS, not whether it's a file
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull SCSI fixes from James Bottomley:
"Two small fixes, one re-fix of a previous fix and five patches sorting
out hotplug in the bnx2X class of drivers. The latter is rather
involved, but necessary because these drivers have started dropping
lockdep recursion warnings on the hotplug lock because of its
conversion to a percpu rwsem"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: sg: only check for dxfer_len greater than 256M
scsi: aacraid: reading out of bounds
scsi: qedf: Limit number of CQs
scsi: bnx2i: Simplify cpu hotplug code
scsi: bnx2fc: Simplify CPU hotplug code
scsi: bnx2i: Prevent recursive cpuhotplug locking
scsi: bnx2fc: Prevent recursive cpuhotplug locking
scsi: bnx2fc: Plug CPU hotplug race
Fix the warning message on the parisc and IA64 architectures to show the
correct function name of the caller by using %pS instead of %pF. The
message is printed with the value of _RET_IP_ which calls
__builtin_return_address(0) and as such returns the IP address caller
instead of pointer to a function descriptor of the caller.
The effect of this patch is visible on the parisc and ia64 architectures
only since those are the ones which use function descriptors while on
all others %pS and %pF will behave the same.
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Fixes: eecabf5674 ("random: suppress spammy warnings about unseeded randomness")
Fixes: d06bfd1989 ("random: warn when kernel uses unseeded randomness")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull Xtensa fixes from Max Filippov:
- use asm-generic instances of asm/param.h and asm/device.h instead of
exact copies in arch/xtensa/include/asm;
- fix build error for xtensa cores with aliasing WT cache: define cache
flushing functions and copy_{to,from}_user_page;
- add missing EXPORT_SYMBOLs for clear_user_highpage, copy_user_highpage,
flush_dcache_page, local_flush_cache_range, local_flush_cache_page,
csum_partial and csum_partial_copy_generic.
* tag 'xtensa-20170807' of git://github.com/jcmvbkbc/linux-xtensa:
xtensa: mm/cache: add missing EXPORT_SYMBOLs
xtensa: don't limit csum_partial export by CONFIG_NET
xtensa: fix cache aliasing handling code for WT cache
xtensa: remove wrapper header for asm/param.h
xtensa: remove wrapper header for asm/device.h
Pull MTD fixes from Brian Norris:
"I missed getting these out for rc4, but here are some MTD fixes.
Just NAND fixes (in both the core handling, and a few drivers). Notes
stolen from Boris:
Core fixes:
- fix data interface setup for ONFI NANDs that do not support the SET
FEATURES command
- fix a kernel doc header
- fix potential integer overflow when retrieving timing information
from the parameter page
- fix wrong OOB layout for small page NANDs
Driver fixes:
- fix potential division-by-zero bug
- fix backward compat with old atmel-nand DT bindings
- fix ->setup_data_interface() in the atmel NAND driver"
* tag 'for-linus-20170807' of git://git.infradead.org/linux-mtd:
mtd: nand: atmel: Fix EDO mode check
mtd: nand: Declare tBERS, tR and tPROG as u64 to avoid integer overflow
mtd: nand: Fix timing setup for NANDs that do not support SET FEATURES
mtd: nand: Fix a docs build warning
mtd: nand: sunxi: fix potential divide-by-zero error
nand: fix wrong default oob layout for small pages using soft ecc
mtd: nand: atmel: Fix DT backward compatibility in pmecc.c
Pull xfs fixes from Darrick Wong:
"I have a couple more bug fixes for you today:
- fix memory leak when issuing discard
- fix propagation of the dax inode flag"
* tag 'xfs-4.13-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: Fix per-inode DAX flag inheritance
xfs: Fix leak of discard bio
Pull x86 platform driver fix from Darren Hart:
"Fix loop preventing some platforms from waking up via the power button
in s2idle:
- intel-vbtn: match power button on press rather than release"
* tag 'platform-drivers-x86-v4.13-4' of git://git.infradead.org/linux-platform-drivers-x86:
platform/x86: intel-vbtn: match power button on press rather than release
Pull ext4 fixes from Ted Ts'o:
"A large number of ext4 bug fixes and cleanups for v4.13"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix copy paste error in ext4_swap_extents()
ext4: fix overflow caused by missing cast in ext4_resize_fs()
ext4, project: expand inode extra size if possible
ext4: cleanup ext4_expand_extra_isize_ea()
ext4: restructure ext4_expand_extra_isize
ext4: fix forgetten xattr lock protection in ext4_expand_extra_isize
ext4: make xattr inode reads faster
ext4: inplace xattr block update fails to deduplicate blocks
ext4: remove unused mode parameter
ext4: fix warning about stack corruption
ext4: fix dir_nlink behaviour
ext4: silence array overflow warning
ext4: fix SEEK_HOLE/SEEK_DATA for blocksize < pagesize
ext4: release discard bio after sending discard commands
ext4: convert swap_inode_data() over to use swap() on most of the fields
ext4: error should be cleared if ea_inode isn't added to the cache
ext4: Don't clear SGID when inheriting ACLs
ext4: preserve i_mode if __ext4_set_acl() fails
ext4: remove unused metadata accounting variables
ext4: correct comment references to ext4_ext_direct_IO()
Pull MIPS fixes from Ralf Baechle:
"This fixes two build issues for ralink platforms, both due to missing
#includes which used to be included indirectly via other headers"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: ralink: mt7620: Add missing header
MIPS: ralink: Fix build error due to missing header
The latest change of compat_sys_sigpending in commit 8f13621abc
("sigpending(): move compat to native") has broken it in two ways.
First, it tries to write 4 bytes more than userspace expects:
sizeof(old_sigset_t) == sizeof(long) == 8 instead of
sizeof(compat_old_sigset_t) == sizeof(u32) == 4.
Second, on big endian architectures these bytes are being written in the
wrong order.
This bug was found by strace test suite.
Reported-by: Anatoly Pugachev <matorola@gmail.com>
Inspired-by: Eugene Syromyatnikov <evgsyr@gmail.com>
Fixes: 8f13621abc ("sigpending(): move compat to native")
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This bug was found by a static code checker tool for copy paste
problems.
Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Vaneet Narang <v.narang@samsung.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
On a 32-bit platform, the value of n_blcoks_count may be wrong during
the file system is resized to size larger than 2^32 blocks. This may
caused the superblock being corrupted with zero blocks count.
Fixes: 1c6bd7173d
Signed-off-by: Jerry Lee <jerrylee@qnap.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org # 3.7+
When upgrading from old format, try to set project id
to old file first time, it will return EOVERFLOW, but if
that file is dirtied(touch etc), changing project id will
be allowed, this might be confusing for users, we could
try to expand @i_extra_isize here too.
Reported-by: Zhang Yi <yi.zhang@huawei.com>
Signed-off-by: Miao Xie <miaoxie@huawei.com>
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Clean up some goto statement, make ext4_expand_extra_isize_ea() clearer.
Signed-off-by: Miao Xie <miaoxie@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Wang Shilong <wshilong@ddn.com>
Current ext4_expand_extra_isize just tries to expand extra isize, if
someone is holding xattr lock or some check fails, it will give up.
So rename its name to ext4_try_to_expand_extra_isize.
Besides that, we clean up unnecessary check and move some relative checks
into it.
Signed-off-by: Miao Xie <miaoxie@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Wang Shilong <wshilong@ddn.com>
We should avoid the contention between the i_extra_isize update and
the inline data insertion, so move the xattr trylock in front of
i_extra_isize update.
Signed-off-by: Miao Xie <miaoxie@huawei.com>
Reviewed-by: Wang Shilong <wshilong@ddn.com>
ext4_xattr_inode_read() currently reads each block sequentially while
waiting for io operation to complete before moving on to the next
block. This prevents request merging in block layer.
Add a ext4_bread_batch() function that starts reads for all blocks
then optionally waits for them to complete. A similar logic is used
in ext4_find_entry(), so update that code to use the new function.
Signed-off-by: Tahsin Erdogan <tahsin@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
When an xattr block has a single reference, block is updated inplace
and it is reinserted to the cache. Later, a cache lookup is performed
to see whether an existing block has the same contents. This cache
lookup will most of the time return the just inserted entry so
deduplication is not achieved.
Running the following test script will produce two xattr blocks which
can be observed in "File ACL: " line of debugfs output:
mke2fs -b 1024 -I 128 -F -O extent /dev/sdb 1G
mount /dev/sdb /mnt/sdb
touch /mnt/sdb/{x,y}
setfattr -n user.1 -v aaa /mnt/sdb/x
setfattr -n user.2 -v bbb /mnt/sdb/x
setfattr -n user.1 -v aaa /mnt/sdb/y
setfattr -n user.2 -v bbb /mnt/sdb/y
debugfs -R 'stat x' /dev/sdb | cat
debugfs -R 'stat y' /dev/sdb | cat
This patch defers the reinsertion to the cache so that we can locate
other blocks with the same contents.
Signed-off-by: Tahsin Erdogan <tahsin@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
ext4_alloc_file_blocks() does not use its mode parameter. Remove it.
Signed-off-by: Tahsin Erdogan <tahsin@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
After commit 62d1034f53e3 ("fortify: use WARN instead of BUG for now"),
we get a warning about possible stack overflow from a memcpy that
was not strictly bounded to the size of the local variable:
inlined from 'ext4_mb_seq_groups_show' at fs/ext4/mballoc.c:2322:2:
include/linux/string.h:309:9: error: '__builtin_memcpy': writing between 161 and 1116 bytes into a region of size 160 overflows the destination [-Werror=stringop-overflow=]
We actually had a bug here that would have been found by the warning,
but it was already fixed last year in commit 30a9d7afe7 ("ext4: fix
stack memory corruption with 64k block size").
This replaces the fixed-length structure on the stack with a variable-length
structure, using the correct upper bound that tells the compiler that
everything is really fine here. I also change the loop count to check
for the same upper bound for consistency, but the existing code is
already correct here.
Note that while clang won't allow certain kinds of variable-length arrays
in structures, this particular instance is fine, as the array is at the
end of the structure, and the size is strictly bounded.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The dir_nlink feature has been enabled by default for new ext4
filesystems since e2fsprogs-1.41 in 2008, and was automatically
enabled by the kernel for older ext4 filesystems since the
dir_nlink feature was added with ext4 in kernel 2.6.28+ when
the subdirectory count exceeded EXT4_LINK_MAX-1.
Automatically adding the file system features such as dir_nlink is
generally frowned upon, since it could cause the file system to not be
mountable on older kernel, thus preventing the administrator from
rolling back to an older kernel if necessary.
In this case, the administrator might also want to disable the feature
because glibc's fts_read() function does not correctly optimize
directory traversal for directories that use st_nlinks field of 1 to
indicate that the number of links in the directory are not tracked by
the file system, and could fail to traverse the full directory
hierarchy. Fortunately, in the past ten years very few users have
complained about incomplete file system traversal by glibc's
fts_read().
This commit also changes ext4_inc_count() to allow i_nlinks to reach
the full EXT4_LINK_MAX links on the parent directory (including "."
and "..") before changing i_links_count to be 1.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=196405
Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
I get a static checker warning:
fs/ext4/ext4.h:3091 ext4_set_de_type()
error: buffer overflow 'ext4_type_by_mode' 15 <= 15
It seems unlikely that we would hit this read overflow in real life, but
it's also simple enough to make the array 16 bytes instead of 15.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Joe Perches
Randy Dunlap
Sedat Dilek
Linus Torvalds
Helge Deller
Dmitry V. Levin
Maninder Singh
Jerry Lee
Miao Xie
Tahsin Erdogan
Arnd Bergmann
Andreas Dilger
Dan Carpenter