Commit Graph

616728 Commits

Author SHA1 Message Date
Jaegeuk Kim
e8ea9b3d7e f2fs: avoid ENOMEM during roll-forward recovery
This patch gives another chances during roll-forward recovery regarding to
-ENOMEM.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-13 13:02:29 -07:00
Jaegeuk Kim
f4702d61eb f2fs: add common iget in add_fsync_inode
There is no functional change.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-12 13:55:11 -07:00
Jaegeuk Kim
7f3037a5ec f2fs: check free_sections for defragmentation
Fix wrong condition check for defragmentation of a file.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-12 10:30:41 -07:00
Yunlei He
ed214a1183 f2fs: forbid to do fstrim if fs has some error
This patch skip fstrim if sbi set SBI_NEED_FSCK flag

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-12 10:30:40 -07:00
Jaegeuk Kim
34b5d5c22d f2fs: avoid page allocation for truncating partial inline_data
When truncating cached inline_data, we don't need to allocate a new page
all the time. Instead, it must check its page cache only.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-12 10:30:39 -07:00
Jaegeuk Kim
68f313935f f2fs: no need to make zeros beyond i_size
We don't need to make zeros beyond i_size, since we already wrote that through
NEW_ADDR case.

Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-07 18:53:50 -07:00
Chao Yu
7732c26ac3 f2fs: fix to detect temporary name of multimedia file
Some applications may create multimeida file with temporary name like
'*.jpg.tmp' or '*.mp4.tmp', then rename to '*.jpg' or '*.mp4'.

Now, f2fs can only detect multimedia filename with specified format:
"filename + '.' + extension", so it will make f2fs missing to detect
multimedia file with special temporary name, result in failing to set
cold flag on file.

This patch enhances detection flow for enabling lookup extension in the
middle of temporary filename.

Reported-by: Xue Liu <liuxueliu.liu@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-07 18:53:49 -07:00
Chao Yu
6ab2a3085e f2fs: fix minor typo
Correct typo from 'destory' to 'destroy'.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-07 18:53:48 -07:00
Jaegeuk Kim
6bf6b267d2 f2fs: set dentry bits on random location in memory
This fixes pointer panic when using inline_dentry, which was triggered when
backporting to 3.10.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-07 18:53:47 -07:00
Chao Yu
c2a080aefa f2fs: fix to set superblock dirty correctly
tests/generic/251 of fstest suit complains us with below message:

------------[ cut here ]------------
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 2 PID: 7698 Comm: fstrim Tainted: G           O    4.7.0+ #21
task: e9f4e000 task.stack: e7262000
EIP: 0060:[<f89fcefe>] EFLAGS: 00010202 CPU: 2
EIP is at write_checkpoint+0xfde/0x1020 [f2fs]
EAX: f33eb300 EBX: eecac310 ECX: 00000001 EDX: ffff0001
ESI: eecac000 EDI: eecac5f0 EBP: e7263dec ESP: e7263d18
 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
CR0: 80050033 CR2: b76ab01c CR3: 2eb89de0 CR4: 000406f0
Stack:
 00000001 a220fb7b e9f4e000 00000002 419ff2d3 b3a05151 00000002 e9f4e5d8
 e9f4e000 419ff2d3 b3a05151 eecac310 c10b8154 b3a05151 419ff2d3 c10b78bd
 e9f4e000 e9f4e000 e9f4e5d8 00000001 e9f4e000 ec409000 eecac2cc eecac288
Call Trace:
 [<c10b8154>] ? __lock_acquire+0x3c4/0x760
 [<c10b78bd>] ? mark_held_locks+0x5d/0x80
 [<f8a10632>] f2fs_trim_fs+0x1c2/0x2e0 [f2fs]
 [<f89e9f56>] f2fs_ioctl+0x6b6/0x10b0 [f2fs]
 [<c13d51df>] ? __this_cpu_preempt_check+0xf/0x20
 [<c10b4281>] ? trace_hardirqs_off_caller+0x91/0x120
 [<f89e98a0>] ? __exchange_data_block+0xd30/0xd30 [f2fs]
 [<c120b2e1>] do_vfs_ioctl+0x81/0x7f0
 [<c11d57c5>] ? kmem_cache_free+0x245/0x2e0
 [<c1217840>] ? get_unused_fd_flags+0x40/0x40
 [<c1206eec>] ? putname+0x4c/0x50
 [<c11f631e>] ? do_sys_open+0x16e/0x1d0
 [<c1001990>] ? do_fast_syscall_32+0x30/0x1c0
 [<c13d51df>] ? __this_cpu_preempt_check+0xf/0x20
 [<c120baa8>] SyS_ioctl+0x58/0x80
 [<c1001a01>] do_fast_syscall_32+0xa1/0x1c0
 [<c178cc54>] sysenter_past_esp+0x45/0x74
EIP: [<f89fcefe>] write_checkpoint+0xfde/0x1020 [f2fs] SS:ESP 0068:e7263d18
---[ end trace 4de95d7e6b3aa7c6 ]---

The reason is: with below call stack, we will encounter BUG_ON during
doing fstrim.

Thread A				Thread B
- write_checkpoint
 - do_checkpoint
					- f2fs_write_inode
					 - update_inode_page
					  - update_inode
					   - set_page_dirty
					    - f2fs_set_node_page_dirty
					     - inc_page_count
					      - percpu_counter_inc
					      - set_sbi_flag(SBI_IS_DIRTY)
  - clear_sbi_flag(SBI_IS_DIRTY)

Thread C				Thread D
- f2fs_write_node_page
 - set_node_addr
  - __set_nat_cache_dirty
   - nm_i->dirty_nat_cnt++
					- do_vfs_ioctl
					 - f2fs_ioctl
					  - f2fs_trim_fs
					   - write_checkpoint
					    - f2fs_bug_on(nm_i->dirty_nat_cnt)

Fix it by setting superblock dirty correctly in do_checkpoint and
f2fs_write_node_page.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-07 18:53:47 -07:00
Shuoran Liu
e7ba108a06 f2fs: add roll-forward recovery process for encrypted dentry
Add roll-forward recovery process for encrypted dentry, so the first fsync
issued to an encrypted file does not need writing checkpoint.

This improves the performance of the following test at thousands of small
files: open -> write -> fsync -> close

Signed-off-by: Shuoran Liu <liushuoran@huawei.com>
Acked-by: Chao Yu <yuchao0@huawei.com>
[Jaegeuk Kim: modify kernel message to show encrypted names]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-07 17:27:40 -07:00
Jaegeuk Kim
bbf156f7af f2fs: fix lost xattrs of directories
This patch enhances the xattr consistency of dirs from suddern power-cuts.

Possible scenario would be:
1. dir->setxattr used by per-file encryption
2. file->setxattr goes into inline_xattr
3. file->fsync

In that case, we should do checkpoint for #1.
Otherwise we'd lose dir's key information for the file given #2.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-07 17:27:39 -07:00
Chao Yu
275b66b09e f2fs: support async discard
Like most filesystems, f2fs will issue discard command synchronously, so
when user trigger fstrim through ioctl, multiple discard commands will be
issued serially with sync mode, which makes poor performance.

In this patch we try to support async discard, so that all discard
commands can be issued and be waited for endio in batch to improve
performance.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-07 17:27:38 -07:00
Shuoran Liu
167451efb5 f2fs: set encryption name flag in add inline entry path
This patch sets encryption name flag in the add inline entry path
if filename is encrypted.

Signed-off-by: Shuoran Liu <liushuoran@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-07 17:27:37 -07:00
Chao Yu
e06f86e61d f2fs crypto: avoid unneeded memory allocation in ->readdir
When decrypting dirents in ->readdir, fscrypt_fname_disk_to_usr won't
change content of original encrypted dirent, we don't need to allocate
additional buffer for storing mirror of it, so get rid of it.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-07 17:27:36 -07:00
Chao Yu
9421d57051 f2fs: fix to do security initialization of encrypted inode with original filename
When creating new inode, security_inode_init_security will be called for
initializing security info related to the inode, and filename is passed to
security module, it helps security module such as SElinux to know which
rule or label could be applied for the inode with specified name.

Previously, if new inode is created as an encrypted one, f2fs will transfer
encrypted filename to security module which may fail the check of security
policy belong to the inode. So in order to this issue, alter to transfer
original unencrypted filename instead.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-07 17:27:35 -07:00
Chao Yu
7ea984b060 f2fs: do in batch synchronously readahead during GC
In order to enhance performance, we try to readahead node page during
GC, but before loading node page we should get block address of node page
which is stored in NAT table, so synchronously read of single NAT page
block our readahead flow.

f2fs_submit_page_bio: dev = (251,0), ino = 2, page_index = 0xa1e, oldaddr = 0xa1e, newaddr = 0xa1e, rw = READ_SYNC(MP), type = META
f2fs_submit_page_bio: dev = (251,0), ino = 1, page_index = 0x35e9, oldaddr = 0x72d7a, newaddr = 0x72d7a, rw = READAHEAD ^H, type = NODE
f2fs_submit_page_bio: dev = (251,0), ino = 2, page_index = 0xc1f, oldaddr = 0xc1f, newaddr = 0xc1f, rw = READ_SYNC(MP), type = META
f2fs_submit_page_bio: dev = (251,0), ino = 1, page_index = 0x389d, oldaddr = 0x72d7d, newaddr = 0x72d7d, rw = READAHEAD ^H, type = NODE
f2fs_submit_page_bio: dev = (251,0), ino = 1, page_index = 0x3a82, oldaddr = 0x72d7f, newaddr = 0x72d7f, rw = READAHEAD ^H, type = NODE
f2fs_submit_page_bio: dev = (251,0), ino = 1, page_index = 0x3bfa, oldaddr = 0x72d86, newaddr = 0x72d86, rw = READAHEAD ^H, type = NODE

This patch adds one phase that do readahead NAT pages in batch before
readahead node page for more effeciently.

f2fs_submit_page_bio: dev = (251,0), ino = 2, page_index = 0x1952, oldaddr = 0x1952, newaddr = 0x1952, rw = READ_SYNC(MP), type = META
f2fs_submit_page_mbio: dev = (251,0), ino = 2, page_index = 0xc34, oldaddr = 0xc34, newaddr = 0xc34, rw = READ_SYNC(MP), type = META
f2fs_submit_page_mbio: dev = (251,0), ino = 2, page_index = 0xa33, oldaddr = 0xa33, newaddr = 0xa33, rw = READ_SYNC(MP), type = META
f2fs_submit_page_mbio: dev = (251,0), ino = 2, page_index = 0xc30, oldaddr = 0xc30, newaddr = 0xc30, rw = READ_SYNC(MP), type = META
f2fs_submit_page_mbio: dev = (251,0), ino = 2, page_index = 0xc32, oldaddr = 0xc32, newaddr = 0xc32, rw = READ_SYNC(MP), type = META
f2fs_submit_page_mbio: dev = (251,0), ino = 2, page_index = 0xc26, oldaddr = 0xc26, newaddr = 0xc26, rw = READ_SYNC(MP), type = META
f2fs_submit_page_mbio: dev = (251,0), ino = 2, page_index = 0xa2b, oldaddr = 0xa2b, newaddr = 0xa2b, rw = READ_SYNC(MP), type = META
f2fs_submit_page_mbio: dev = (251,0), ino = 2, page_index = 0xc23, oldaddr = 0xc23, newaddr = 0xc23, rw = READ_SYNC(MP), type = META
f2fs_submit_page_mbio: dev = (251,0), ino = 2, page_index = 0xc24, oldaddr = 0xc24, newaddr = 0xc24, rw = READ_SYNC(MP), type = META
f2fs_submit_page_mbio: dev = (251,0), ino = 2, page_index = 0xa10, oldaddr = 0xa10, newaddr = 0xa10, rw = READ_SYNC(MP), type = META
f2fs_submit_page_mbio: dev = (251,0), ino = 2, page_index = 0xc2c, oldaddr = 0xc2c, newaddr = 0xc2c, rw = READ_SYNC(MP), type = META
f2fs_submit_page_bio: dev = (251,0), ino = 1, page_index = 0x5db7, oldaddr = 0x6be00, newaddr = 0x6be00, rw = READAHEAD ^H, type = NODE
f2fs_submit_page_bio: dev = (251,0), ino = 1, page_index = 0x5db9, oldaddr = 0x6be17, newaddr = 0x6be17, rw = READAHEAD ^H, type = NODE
f2fs_submit_page_bio: dev = (251,0), ino = 1, page_index = 0x5dbc, oldaddr = 0x6be1a, newaddr = 0x6be1a, rw = READAHEAD ^H, type = NODE
f2fs_submit_page_bio: dev = (251,0), ino = 1, page_index = 0x5dc3, oldaddr = 0x6be20, newaddr = 0x6be20, rw = READAHEAD ^H, type = NODE
f2fs_submit_page_bio: dev = (251,0), ino = 1, page_index = 0x5dc7, oldaddr = 0x6be24, newaddr = 0x6be24, rw = READAHEAD ^H, type = NODE
f2fs_submit_page_bio: dev = (251,0), ino = 1, page_index = 0x5dc9, oldaddr = 0x6be25, newaddr = 0x6be25, rw = READAHEAD ^H, type = NODE

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-07 17:27:34 -07:00
Chao Yu
74fa5f3d43 f2fs: schedule in between two continous batch discards
In batch discard approach of fstrim will grab/release gc_mutex lock
repeatly, it makes contention of the lock becoming more intensive.

So after one batch discards were issued in checkpoint and the lock
was released, it's better to do schedule() to increase opportunity
of grabbing gc_mutex lock for other competitors.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-07 17:27:33 -07:00
Chao Yu
97c1794a5d f2fs: enable inline_dentry by default and add noinline_dentry option
Make inline_dentry as default mount option to improve space usage and
IO performance in scenario of numerous small directory.
It adds noinline_dentry mount option, instead.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:17 -07:00
Shuoran Liu
5d2b42ede7 f2fs: fix a bug when using namehash to locate dentry bucket
In the following scenario,

1) we don't have the key and doing a lookup for encrypted file,
2) and the encrypted filename is big name

we should use fname->hash as name hash value instead of what is
calculated by fname->disk_name. Because in such case,
fname->disk_name is empty.

Signed-off-by: Shuoran Liu <liushuoran@huawei.com>
Acked-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:16 -07:00
Chao Yu
dfd02e4de1 f2fs: fix to preallocate block only aligned to 4K
In write_begin(), we skip checking dnode block for preallocating block
when whole block needs to be updated since we preallocated its block in
f2fs_preallocate_blocks, for partial updated block, we will still try
to lock its node and do preallocation in write_begin(), so in
f2fs_preallocate_blocks we should not preallocate its block.

But previously, the calculation of preallocating block number is
incorrect, fix it.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
[Jaegeuk Kim: fix a bug]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:15 -07:00
Wei Yongjun
6a7a3aedd5 f2fs: fix non static symbol warning
Fixes the following sparse warning:

fs/f2fs/data.c:969:12: warning:
 symbol 'f2fs_grab_bio' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:14 -07:00
Sheng Yong
69494229ba f2fs: remove unnecessary initialization
`flags' is used to save value from userspace, there is no need to
initialize it, and FS_FL_USER_VISIBLE is the mask for getflags.

Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Acked-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:13 -07:00
Chao Yu
5f8eaf1f9b f2fs: remove redundant judgement condition in available_free_memory
In available_free_memory, there are two same judgement conditions which
is used for checking NAT excess, remove one of them.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:12 -07:00
Chao Yu
e932835377 f2fs: check return value of write_checkpoint during fstrim
During fstrim, if one of multiple write_checkpoint failed, break off and
return error number to caller.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:11 -07:00
Chao Yu
58383befc3 f2fs: fix to do f2fs_balance_fs in f2fs_map_blocks correctly
If we preallocate blocks with f2fs_reserve_blocks in f2fs_map_blocks, we
should call f2fs_balance_fs for checking and reclaiming space, fix it.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:10 -07:00
Chao Yu
d600af236d f2fs: avoid unneeded loop in build_sit_entries
When building each sit entry in cache, firstly, we will load it from
sit page, and then check all entries in sit journal, if there is one
updated entry in journal, cover cached entry with the journaled one.

Actually, most of check operation is unneeded since we only need
to update cached entries with journaled entries in batch, so
changing the flow as below for more efficient:
1. load all sit entries into cache from sit pages;
2. update sit entries with journal.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:09 -07:00
Chao Yu
43ced84ec8 f2fs: clean up foreground GC flow
This patch changes to check valid block number of one GCed section
directly instead of checking the number in all segments of section
one by one in order to clean up codes of foreground GC.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:08 -07:00
Chao Yu
7c4abcbecc f2fs: set dirty state for filesystem only when updating meta data
We don't guarantee integrity of user data after checkpoint, since we only
guarantee meta data integrity for data consistency of filesystem.

Due to above reason, we only need to set fs as dirty when meta data is
updated, so that we can skip writing checkpoint in some case of non-meta
data is updated.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:07 -07:00
Yunlei He
58cce381fa f2fs: skip new checkpoint when doing fstrim without fs change
This patch enables to do fstrim without checkpoint, if there is no fs
change.

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:07 -07:00
Yunlei He
f83a2584ca f2fs: add discard info to sys entry of f2fs status
This patch add discard block count to sys entry of f2fs status

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:06 -07:00
Jaegeuk Kim
2d9e9c32a0 f2fs: reduce batch size of fstrim
This is to reduce the batch size of fstrim to avoid long latency.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-29 18:31:05 -07:00
Chao Yu
44819a76d1 f2fs: clean up bio cache trace
Trace info related to bio cache operation is out of format, clean up it.

Before:
       <...>-28308 [002] ....  4781.052703: f2fs_submit_write_bio: dev = (251,1), WRITEWRITE_SYNC ^H, DATA, sector = 271424, size = 126976
       <...>-28308 [002] ....  4781.052820: f2fs_submit_page_mbio: dev = (251,1), ino = 103, page_index = 0x1f, oldaddr = 0xffffffff, newaddr = 0x84a7 rw = WRITEWRITE_SYNCi ^H, type = DATA
kworker/u8:2-29988 [001] ....  5549.293877: f2fs_submit_page_mbio: dev = (251,1), ino = 91, page_index = 0xd, oldaddr = 0xffffffff, newaddr = 0x782f rw = WRITE0x0i ^H type = DATA

After:
kworker/u8:2-8678  [000] ....  7945.124459: f2fs_submit_write_bio: dev = (251,1), rw = WRITE_SYNC, DATA, sector = 74080, size = 53248
kworker/u8:2-8678  [000] ....  7945.124551: f2fs_submit_page_mbio: dev = (251,1), ino = 11, page_index = 0xec, oldaddr = 0xffffffff, newaddr = 0x243a, rw = WRITE, type = DATA

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-24 10:16:14 -07:00
Jaegeuk Kim
3e025740b9 f2fs: do not use discard_map for hard disks
We don't need to keep discard_map, if disk does not support discard command.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-24 10:16:14 -07:00
Yunlei He
bb413d6acd f2fs: not allow to write illegal blkaddr
we came across an error as below:

[build_nat_area_bitmap:1710] nid[0x    1718] addr[0x         1c18ddc] ino[0x    1718]
[build_nat_area_bitmap:1710] nid[0x    1719] addr[0x         1c193d5] ino[0x    1719]
[build_nat_area_bitmap:1710] nid[0x    171a] addr[0x         1c1736e] ino[0x    171a]
[build_nat_area_bitmap:1710] nid[0x    171b] addr[0x        58b3ee8f] ino[0x815f92ed]
[build_nat_area_bitmap:1710] nid[0x    171c] addr[0x         fcdc94b] ino[0x49366377]
[build_nat_area_bitmap:1710] nid[0x    171d] addr[0x        7cd2facf] ino[0xb3c55300]
[build_nat_area_bitmap:1710] nid[0x    171e] addr[0x        bd4e25d0] ino[0x77c34c09]

... ...

[build_nat_area_bitmap:1710] nid[0x    1718] addr[0x         1c18ddc] ino[0x    1718]
[build_nat_area_bitmap:1710] nid[0x    1719] addr[0x         1c193d5] ino[0x    1719]
[build_nat_area_bitmap:1710] nid[0x    171a] addr[0x         1c1736e] ino[0x    171a]
[build_nat_area_bitmap:1710] nid[0x    171b] addr[0x        58b3ee8f] ino[0x815f92ed]
[build_nat_area_bitmap:1710] nid[0x    171c] addr[0x         fcdc94b] ino[0x49366377]
[build_nat_area_bitmap:1710] nid[0x    171d] addr[0x        7cd2facf] ino[0xb3c55300]
[build_nat_area_bitmap:1710] nid[0x    171e] addr[0x        bd4e25d0] ino[0x77c34c09]

One nat block may be stepped by a data block, so this patch forbid to
write if the blkaddr is illegal

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-08-24 10:16:14 -07:00
Linus Torvalds
cad9d20784 vhost: fix for 4.8
This includes a single bugfix for vhost-scsi.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull vhost bugfix from Michael Tsirkin:
 "This includes a single bugfix for vhost-scsi"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vhost/scsi: fix reuse of &vq->iov[out] in response
2016-08-24 07:43:27 -04:00
Linus Torvalds
b059152245 Bug/regression fix
- fsmark regression
 - i_size race condition
 - wrong conditions in f2fs_move_file_range
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Merge tag 'for-f2fs-v4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs fixes from Jaegeuk Kim:
 - fsmark regression
 - i_size race condition
 - wrong conditions in f2fs_move_file_range

* tag 'for-f2fs-v4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
  f2fs: avoid potential deadlock in f2fs_move_file_range
  f2fs: allow copying file range only in between regular files
  Revert "f2fs: move i_size_write in f2fs_write_end"
  Revert "f2fs: use percpu_rw_semaphore"
2016-08-23 20:24:27 -04:00
Linus Torvalds
7a1dcf6ada Fixes for hardened usercopy:
- avoid signed math problems on unexpected compilers
 - avoid false positives at very end of kernel text range checks
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Merge tag 'usercopy-v4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardened usercopy fixes from Kees Cook:
 - avoid signed math problems on unexpected compilers
 - avoid false positives at very end of kernel text range checks

* tag 'usercopy-v4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  usercopy: fix overlap check for kernel text
  usercopy: avoid potentially undefined behavior in pointer math
2016-08-23 14:32:38 -04:00
Linus Torvalds
d1fdafa10f Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
 "This fixes a number of memory corruption bugs in the newly added
  sha256-mb/sha256-mb code"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: sha512-mb - fix ctx pointer
  crypto: sha256-mb - fix ctx pointer and digest copy
2016-08-23 14:29:00 -04:00
Benjamin Coddington
a77ec83a57 vhost/scsi: fix reuse of &vq->iov[out] in response
The address of the iovec &vq->iov[out] is not guaranteed to contain the scsi
command's response iovec throughout the lifetime of the command.  Rather, it
is more likely to contain an iovec from an immediately following command
after looping back around to vhost_get_vq_desc().  Pass along the iovec
entirely instead.

Fixes: 79c14141a4 ("vhost/scsi: Convert completion path to use copy_to_iter")
Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-08-23 17:16:57 +03:00
Josh Poimboeuf
94cd97af69 usercopy: fix overlap check for kernel text
When running with a local patch which moves the '_stext' symbol to the
very beginning of the kernel text area, I got the following panic with
CONFIG_HARDENED_USERCOPY:

  usercopy: kernel memory exposure attempt detected from ffff88103dfff000 (<linear kernel text>) (4096 bytes)
  ------------[ cut here ]------------
  kernel BUG at mm/usercopy.c:79!
  invalid opcode: 0000 [#1] SMP
  ...
  CPU: 0 PID: 4800 Comm: cp Not tainted 4.8.0-rc3.after+ #1
  Hardware name: Dell Inc. PowerEdge R720/0X3D66, BIOS 2.5.4 01/22/2016
  task: ffff880817444140 task.stack: ffff880816274000
  RIP: 0010:[<ffffffff8121c796>] __check_object_size+0x76/0x413
  RSP: 0018:ffff880816277c40 EFLAGS: 00010246
  RAX: 000000000000006b RBX: ffff88103dfff000 RCX: 0000000000000000
  RDX: 0000000000000000 RSI: ffff88081f80dfa8 RDI: ffff88081f80dfa8
  RBP: ffff880816277c90 R08: 000000000000054c R09: 0000000000000000
  R10: 0000000000000005 R11: 0000000000000006 R12: 0000000000001000
  R13: ffff88103e000000 R14: ffff88103dffffff R15: 0000000000000001
  FS:  00007fb9d1750800(0000) GS:ffff88081f800000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 00000000021d2000 CR3: 000000081a08f000 CR4: 00000000001406f0
  Stack:
   ffff880816277cc8 0000000000010000 000000043de07000 0000000000000000
   0000000000001000 ffff880816277e60 0000000000001000 ffff880816277e28
   000000000000c000 0000000000001000 ffff880816277ce8 ffffffff8136c3a6
  Call Trace:
   [<ffffffff8136c3a6>] copy_page_to_iter_iovec+0xa6/0x1c0
   [<ffffffff8136e766>] copy_page_to_iter+0x16/0x90
   [<ffffffff811970e3>] generic_file_read_iter+0x3e3/0x7c0
   [<ffffffffa06a738d>] ? xfs_file_buffered_aio_write+0xad/0x260 [xfs]
   [<ffffffff816e6262>] ? down_read+0x12/0x40
   [<ffffffffa06a61b1>] xfs_file_buffered_aio_read+0x51/0xc0 [xfs]
   [<ffffffffa06a6692>] xfs_file_read_iter+0x62/0xb0 [xfs]
   [<ffffffff812224cf>] __vfs_read+0xdf/0x130
   [<ffffffff81222c9e>] vfs_read+0x8e/0x140
   [<ffffffff81224195>] SyS_read+0x55/0xc0
   [<ffffffff81003a47>] do_syscall_64+0x67/0x160
   [<ffffffff816e8421>] entry_SYSCALL64_slow_path+0x25/0x25
  RIP: 0033:[<00007fb9d0c33c00>] 0x7fb9d0c33c00
  RSP: 002b:00007ffc9c262f28 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
  RAX: ffffffffffffffda RBX: fffffffffff8ffff RCX: 00007fb9d0c33c00
  RDX: 0000000000010000 RSI: 00000000021c3000 RDI: 0000000000000004
  RBP: 00000000021c3000 R08: 0000000000000000 R09: 00007ffc9c264d6c
  R10: 00007ffc9c262c50 R11: 0000000000000246 R12: 0000000000010000
  R13: 00007ffc9c2630b0 R14: 0000000000000004 R15: 0000000000010000
  Code: 81 48 0f 44 d0 48 c7 c6 90 4d a3 81 48 c7 c0 bb b3 a2 81 48 0f 44 f0 4d 89 e1 48 89 d9 48 c7 c7 68 16 a3 81 31 c0 e8 f4 57 f7 ff <0f> 0b 48 8d 90 00 40 00 00 48 39 d3 0f 83 22 01 00 00 48 39 c3
  RIP  [<ffffffff8121c796>] __check_object_size+0x76/0x413
   RSP <ffff880816277c40>

The checked object's range [ffff88103dfff000, ffff88103e000000) is
valid, so there shouldn't have been a BUG.  The hardened usercopy code
got confused because the range's ending address is the same as the
kernel's text starting address at 0xffff88103e000000.  The overlap check
is slightly off.

Fixes: f5509cc18d ("mm: Hardened usercopy")
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
2016-08-22 19:10:51 -07:00
Eric Biggers
7329a65587 usercopy: avoid potentially undefined behavior in pointer math
check_bogus_address() checked for pointer overflow using this expression,
where 'ptr' has type 'const void *':

	ptr + n < ptr

Since pointer wraparound is undefined behavior, gcc at -O2 by default
treats it like the following, which would not behave as intended:

	(long)n < 0

Fortunately, this doesn't currently happen for kernel code because kernel
code is compiled with -fno-strict-overflow.  But the expression should be
fixed anyway to use well-defined integer arithmetic, since it could be
treated differently by different compilers in the future or could be
reported by tools checking for undefined behavior.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
2016-08-22 19:07:55 -07:00
Linus Torvalds
ef0e1ea885 ARC Fixes for 4.8-rc4
- Support for Syscall ABI v4 with upstream gcc 6.x
 
 - Lockdep fix (Daniel Mentz)
 
 - gdb register clobber (Liav Rehana)
 
 - Couple of missing exports for modules
 
 - Other fixes here and there
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Merge tag 'arc-4.8-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:

 - support for Syscall ABI v4 with upstream gcc 6.x

 - lockdep fix (Daniel Mentz)

 - gdb register clobber (Liav Rehana)

 - couple of missing exports for modules

 - other fixes here and there

* tag 'arc-4.8-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: export __udivdi3 for modules
  ARC: mm: fix build breakage with STRICT_MM_TYPECHECKS
  ARC: export kmap
  ARC: Support syscall ABI v4
  ARC: use correct offset in pt_regs for saving/restoring user mode r25
  ARC: Elide redundant setup of DMA callbacks
  ARC: Call trace_hardirqs_on() before enabling irqs
2016-08-22 17:53:02 -05:00
Linus Torvalds
37c669b237 GPIO fixes for v4.8:
This fixes a Kconfig issue with UM: when I made GPIOLIB
 available to all archs, that included UM, but the OF part
 of GPIOLIB requires HAS_IOMEM, so we add HAS_IOMEM as a
 dependency to OF_GPIO.
 
 This in turn exposed the fact that a few GPIO drivers were
 implicitly assuming OF_GPIO as their dependency but instead
 depended on OF alone (the typical problem being a pointer
 inside gpio_chip not existing unless OF_GPIO is selected)
 and then UM would fail to compile with these drivers
 instead. Then I lost patience and made any GPIO driver
 depending on just OF depend on OF_GPIO instead, that is
 certainly what they meant and the only thing that makes
 sense anyway. GPIO with just OF but !OF_GPIO does not make
 sense.
 
 Also a fix for the max730x driver data pointer, and a minor
 comment fix for the GPIO tools.
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Merge tag 'gpio-v4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Here are a few GPIO fixes for v4.8.

  I was expecting some fallout from the new chardev rework but nothing
  like that turned up att all.  Instead a Kconfig confusion that I think
  I have finally nailed, then some ordinary driver noise and trivia.

  This fixes a Kconfig issue with UM: when I made GPIOLIB available to
  all archs, that included UM, but the OF part of GPIOLIB requires
  HAS_IOMEM, so we add HAS_IOMEM as a dependency to OF_GPIO.

  This in turn exposed the fact that a few GPIO drivers were implicitly
  assuming OF_GPIO as their dependency but instead depended on OF alone
  (the typical problem being a pointer inside gpio_chip not existing
  unless OF_GPIO is selected) and then UM would fail to compile with
  these drivers instead.  Then I lost patience and made any GPIO driver
  depending on just OF depend on OF_GPIO instead, that is certainly what
  they meant and the only thing that makes sense anyway.  GPIO with just
  OF but !OF_GPIO does not make sense.

  Also a fix for the max730x driver data pointer, and a minor comment
  fix for the GPIO tools"

* tag 'gpio-v4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: make any OF dependent driver depend on OF_GPIO
  gpio: Fix OF build problem on UM
  gpio: max730x: set gpiochip data pointer before using it
  tools/gpio: fix gpio-event-mon header comment
2016-08-22 17:51:21 -05:00
Linus Torvalds
fa8410b355 Linux 4.8-rc3 2016-08-21 16:14:10 -07:00
Linus Torvalds
46097f2718 Merge branch 'parisc-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull two parisc fixes from Helge Deller:
 "The first patch ensures that the high-res cr16 clocksource (which was
  added in kernel 4.7) gets choosen as default clocksource for parisc.

  The second patch moves the #define of EREFUSED down inside errno.h and
  thus unbreaks building the gccgo compiler"

* 'parisc-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix order of EREFUSED define in errno.h
  parisc: Fix automatic selection of cr16 clocksource
2016-08-21 14:28:24 -07:00
Tony Luck
4ec656bdf4 EDAC, skx_edac: Add EDAC driver for Skylake
This is an entirely new driver instead of yet another set of patches
to sb_edac.c because:

1) Mapping from PCI devices to socket/memory controller is significantly
   different. Skylake scatters devices on a socket across a number of
   PCI buses.
2) There is an extra level of interleaving via the "mcroute" register
   that would be a little messy to squeeze into the old driver.
3) Validation is getting too expensive. Changes to sb_edac need to
   be checked against Sandy Bridge, Ivy Bridge, Haswell, Broadwell and
   Knights Landing.

Acked-by: Aristeu Rozanski <aris@redhat.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-21 10:58:34 -07:00
Helge Deller
3eb53b20d7 parisc: Fix order of EREFUSED define in errno.h
When building gccgo in userspace, errno.h gets parsed and the go include file
sysinfo.go is generated.

Since EREFUSED is defined to the same value as ECONNREFUSED, and ECONNREFUSED
is defined later on in errno.h, this leads to go complaining that EREFUSED
isn't defined yet.

Fix this trivial problem by moving the define of EREFUSED down after
ECONNREFUSED in errno.h (and clean up the indenting while touching this line).

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org
2016-08-20 13:33:53 +02:00
Helge Deller
ae141830b1 parisc: Fix automatic selection of cr16 clocksource
Commit 54b6680090 (parisc: Add native high-resolution sched_clock()
implementation) added support to use the CPU-internal cr16 counters as reliable
clocksource with the help of HAVE_UNSTABLE_SCHED_CLOCK.

Sadly the commit missed to remove the hack which prevented cr16 to become the
default clocksource even on SMP systems.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # 4.7+
2016-08-20 13:33:51 +02:00
Vineet Gupta
c57653dc94 ARC: export __udivdi3 for modules
Some module using div_u64() was failing to link because the libgcc 64-bit
divide assist routine was not being exported for modules

Reported-by: avinashp@quantenna.com
Cc: stable@vger.kernel.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-08-19 14:09:33 -07:00