IF YOU WOULD LIKE TO GET AN ACCOUNT, please write an
email to Administrator. User accounts are meant only to access repo
and report issues and/or generate pull requests.
This is a purpose-specific Git hosting for
BaseALT
projects. Thank you for your understanding!
Только зарегистрированные пользователи имеют доступ к сервису!
Для получения аккаунта, обратитесь к администратору.
If a file has FI_COMPRESS_RELEASED, all writes for it should not be
allowed. However, as of now, in case of compress_mode=user, writes
triggered by IOCTLs like F2FS_IOC_DE/COMPRESS_FILE are allowed unexpectly,
which could crash that file.
To fix it, let's do not allow F2FS_IOC_DE/COMPRESS_IOCTL if a file already
has FI_COMPRESS_RELEASED flag.
This is the reproduction process:
1. $ touch ./file
2. $ chattr +c ./file
3. $ dd if=/dev/random of=./file bs=4096 count=30 conv=notrunc
4. $ dd if=/dev/zero of=./file bs=4096 count=34 seek=30 conv=notrunc
5. $ sync
6. $ do_compress ./file ; call F2FS_IOC_COMPRESS_FILE
7. $ get_compr_blocks ./file ; call F2FS_IOC_GET_COMPRESS_BLOCKS
8. $ release ./file ; call F2FS_IOC_RELEASE_COMPRESS_BLOCKS
9. $ do_compress ./file ; call F2FS_IOC_COMPRESS_FILE again
10. $ get_compr_blocks ./file ; call F2FS_IOC_GET_COMPRESS_BLOCKS again
This reproduction process is tested in 128kb cluster size.
You can find compr_blocks has a negative value.
Fixes: 5fdb322ff2c2b ("f2fs: add F2FS_IOC_DECOMPRESS_FILE and F2FS_IOC_COMPRESS_FILE")
Signed-off-by: Junbeom Yeom <junbeom.yeom@samsung.com>
Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Youngjin Gil <youngjin.gil@samsung.com>
Signed-off-by: Jaewook Kim <jw5454.kim@samsung.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
If kernel doesn't have CONFIG_F2FS_FS_COMPRESSION, a file having FS_COMPR_FL via
ioctl(FS_IOC_SETFLAGS) is unaccessible due to f2fs_is_compress_backend_ready().
Let's avoid it.
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
To ensure serialized IOs, f2fs allows only LFS mode for zoned
device. Remove redundant check for direct IO.
Signed-off-by: Eunhee Rho <eunhee83.rho@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
There is issue as follows when test f2fs atomic write:
F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock
F2FS-fs (loop0): invalid crc_offset: 0
F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=1, run fsck to fix.
F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix.
==================================================================
BUG: KASAN: null-ptr-deref in f2fs_get_dnode_of_data+0xac/0x16d0
Read of size 8 at addr 0000000000000028 by task rep/1990
CPU: 4 PID: 1990 Comm: rep Not tainted 5.19.0-rc6-next-20220715 #266
Call Trace:
<TASK>
dump_stack_lvl+0x6e/0x91
print_report.cold+0x49a/0x6bb
kasan_report+0xa8/0x130
f2fs_get_dnode_of_data+0xac/0x16d0
f2fs_do_write_data_page+0x2a5/0x1030
move_data_page+0x3c5/0xdf0
do_garbage_collect+0x2015/0x36c0
f2fs_gc+0x554/0x1d30
f2fs_balance_fs+0x7f5/0xda0
f2fs_write_single_data_page+0xb66/0xdc0
f2fs_write_cache_pages+0x716/0x1420
f2fs_write_data_pages+0x84f/0x9a0
do_writepages+0x130/0x3a0
filemap_fdatawrite_wbc+0x87/0xa0
file_write_and_wait_range+0x157/0x1c0
f2fs_do_sync_file+0x206/0x12d0
f2fs_sync_file+0x99/0xc0
vfs_fsync_range+0x75/0x140
f2fs_file_write_iter+0xd7b/0x1850
vfs_write+0x645/0x780
ksys_write+0xf1/0x1e0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
As 3db1de0e582c commit changed atomic write way which new a cow_inode for
atomic write file, and also mark cow_inode as FI_ATOMIC_FILE.
When f2fs_do_write_data_page write cow_inode will use cow_inode's cow_inode
which is NULL. Then will trigger null-ptr-deref.
To solve above issue, introduce FI_COW_FILE flag for COW inode.
Fiexes: 3db1de0e582c("f2fs: change the current atomic write way")
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
F2FS_IOC_ABORT_VOLATILE_WRITE was used to abort a atomic write before.
However it was removed accidentally. So revive it by changing the name,
since volatile write had gone.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Fiexes: 7bc155fec5b3("f2fs: kill volatile write support")
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
As Wenqing Liu <wenqingliu0120@gmail.com> reported in bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=216285
RIP: 0010:memcpy_erms+0x6/0x10
f2fs_update_meta_page+0x84/0x570 [f2fs]
change_curseg.constprop.0+0x159/0xbd0 [f2fs]
f2fs_do_replace_block+0x5c7/0x18a0 [f2fs]
f2fs_replace_block+0xeb/0x180 [f2fs]
recover_data+0x1abd/0x6f50 [f2fs]
f2fs_recover_fsync_data+0x12ce/0x3250 [f2fs]
f2fs_fill_super+0x4459/0x6190 [f2fs]
mount_bdev+0x2cf/0x3b0
legacy_get_tree+0xed/0x1d0
vfs_get_tree+0x81/0x2b0
path_mount+0x47e/0x19d0
do_mount+0xce/0xf0
__x64_sys_mount+0x12c/0x1a0
do_syscall_64+0x38/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
The root cause is segment type is invalid, so in f2fs_do_replace_block(),
f2fs accesses f2fs_sm_info::curseg_array with out-of-range segment type,
result in accessing invalid curseg->sum_blk during memcpy in
f2fs_update_meta_page(). Fix this by adding sanity check on segment type
in build_sit_entries().
Reported-by: Wenqing Liu <wenqingliu0120@gmail.com>
Signed-off-by: Chao Yu <chao.yu@oppo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
After commit a7eeb823854c ("f2fs: use bitmap in discard_entry"),
MAX_DISCARD_BLOCKS became obsolete, remove it.
Signed-off-by: Chao Yu <chao.yu@oppo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
As Dipanjan Das <mail.dipanjan.das@gmail.com> reported, syzkaller
found a f2fs bug as below:
RIP: 0010:f2fs_new_node_page+0x19ac/0x1fc0 fs/f2fs/node.c:1295
Call Trace:
write_all_xattrs fs/f2fs/xattr.c:487 [inline]
__f2fs_setxattr+0xe76/0x2e10 fs/f2fs/xattr.c:743
f2fs_setxattr+0x233/0xab0 fs/f2fs/xattr.c:790
f2fs_xattr_generic_set+0x133/0x170 fs/f2fs/xattr.c:86
__vfs_setxattr+0x115/0x180 fs/xattr.c:182
__vfs_setxattr_noperm+0x125/0x5f0 fs/xattr.c:216
__vfs_setxattr_locked+0x1cf/0x260 fs/xattr.c:277
vfs_setxattr+0x13f/0x330 fs/xattr.c:303
setxattr+0x146/0x160 fs/xattr.c:611
path_setxattr+0x1a7/0x1d0 fs/xattr.c:630
__do_sys_lsetxattr fs/xattr.c:653 [inline]
__se_sys_lsetxattr fs/xattr.c:649 [inline]
__x64_sys_lsetxattr+0xbd/0x150 fs/xattr.c:649
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
NAT entry and nat bitmap can be inconsistent, e.g. one nid is free
in nat bitmap, and blkaddr in its NAT entry is not NULL_ADDR, it
may trigger BUG_ON() in f2fs_new_node_page(), fix it.
Reported-by: Dipanjan Das <mail.dipanjan.das@gmail.com>
Signed-off-by: Chao Yu <chao.yu@oppo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
If the inode has the compress flag, it will fail to use
'chattr -c +m' to remove its compress flag and tag no compress flag.
However, the same command will be successful when executed again,
as shown below:
$ touch foo.txt
$ chattr +c foo.txt
$ chattr -c +m foo.txt
chattr: Invalid argument while setting flags on foo.txt
$ chattr -c +m foo.txt
$ f2fs_io getflags foo.txt
get a flag on foo.txt ret=0, flags=nocompression,inline_data
Fix this by removing some checks in f2fs_setflags_common()
that do not affect the original logic. I go through all the
possible scenarios, and the results are as follows. Bold is
the only thing that has changed.
+---------------+-----------+-----------+----------+
| | file flags |
+ command +-----------+-----------+----------+
| | no flag | compr | nocompr |
+---------------+-----------+-----------+----------+
| chattr +c | compr | compr | -EINVAL |
| chattr -c | no flag | no flag | nocompr |
| chattr +m | nocompr | -EINVAL | nocompr |
| chattr -m | no flag | compr | no flag |
| chattr +c +m | -EINVAL | -EINVAL | -EINVAL |
| chattr +c -m | compr | compr | compr |
| chattr -c +m | nocompr | *nocompr* | nocompr |
| chattr -c -m | no flag | no flag | no flag |
+---------------+-----------+-----------+----------+
Link: https://lore.kernel.org/linux-f2fs-devel/20220621064833.1079383-1-chaoliu719@gmail.com/
Fixes: 4c8ff7095bef ("f2fs: support data compression")
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Chao Liu <liuchao@coolpad.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
introduce the below 4 new sysfs node for atomic write statistics.
- current_atomic_write: the total current atomic write block count,
which is not committed yet.
- peak_atomic_write: the peak value of total current atomic write block
count after boot.
- committed_atomic_block: the accumulated total committed atomic write
block count after boot.
- revoked_atomic_block: the accumulated total revoked atomic write block
count after boot.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
f2fs_gc returns -EINVAL via f2fs_balance_fs when there is enough free
secs after write checkpoint, but with gc_merge enabled, it will cause
the sleep time of gc thread to be set to no_gc_sleep_time even if there
are many dirty segments can be selected.
Signed-off-by: qixiaoyu1 <qixiaoyu1@xiaomi.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
After commit e3b49ea36802 ("f2fs: invalidate META_MAPPING before
IPU/DIO write"), invalidate_mapping_pages() will be called to
avoid race condition in between IPU/DIO and readahead for GC.
However, readahead flow is only used for post_read required inode,
so this patch adds check condition to avoids unnecessary page cache
invalidating for non-post_read inode.
Signed-off-by: Chao Yu <chao.yu@oppo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Files created by truncate(1) have a size but no blocks, so
they can be allowed to enable compression.
Signed-off-by: Chao Liu <liuchao@coolpad.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
When converting inode to compressed one via ioctl, it needs to check
inline_data, since inline_data flag and compressed flag are incompatible.
Fixes: 4c8ff7095bef ("f2fs: support data compression")
Signed-off-by: Chao Yu <chao.yu@oppo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
f2fs_copy_page() is a wrapper around two kmap() + one memcpy() from/to
the mapped pages. It unnecessarily duplicates a kernel API and it makes
use of kmap(), which is being deprecated in favor of kmap_local_page().
Two main problems with kmap(): (1) It comes with an overhead as mapping
space is restricted and protected by a global lock for synchronization and
(2) it also requires global TLB invalidation when the kmap’s pool wraps
and it might block when the mapping space is fully utilized until a slot
becomes available.
With kmap_local_page() the mappings are per thread, CPU local, can take
page faults, and can be called from any context (including interrupts).
It is faster than kmap() in kernels with HIGHMEM enabled. Therefore, its
use in __clone_blkaddrs() is safe and should be preferred.
Delete f2fs_copy_page() and use a plain memcpy_page() in the only one
site calling the removed function. memcpy_page() avoids open coding two
kmap_local_page() + one memcpy() between the two kernel virtual addresses.
Suggested-by: Christoph Hellwig <hch@infradead.org>
Suggested-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Quoted from commit e3b49ea36802 ("f2fs: invalidate META_MAPPING before
IPU/DIO write")
"
Encrypted pages during GC are read and cached in META_MAPPING.
However, due to cached pages in META_MAPPING, there is an issue where
newly written pages are lost by IPU or DIO writes.
Thread A - f2fs_gc() Thread B
/* phase 3 */
down_write(i_gc_rwsem)
ra_data_block() ---- (a)
up_write(i_gc_rwsem)
f2fs_direct_IO() :
- down_read(i_gc_rwsem)
- __blockdev_direct_io()
- get_data_block_dio_write()
- f2fs_dio_submit_bio() ---- (b)
- up_read(i_gc_rwsem)
/* phase 4 */
down_write(i_gc_rwsem)
move_data_block() ---- (c)
up_write(i_gc_rwsem)
(a) In phase 3 of f2fs_gc(), up-to-date page is read from storage and
cached in META_MAPPING.
(b) In thread B, writing new data by IPU or DIO write on same blkaddr as
read in (a). cached page in META_MAPPING become out-dated.
(c) In phase 4 of f2fs_gc(), out-dated page in META_MAPPING is copied to
new blkaddr. In conclusion, the newly written data in (b) is lost.
To address this issue, invalidating pages in META_MAPPING before IPU or
DIO write.
"
In previous commit, we missed to cover extent cache hit case, and passed
wrong value for parameter @end of invalidate_mapping_pages(), fix both
issues.
Fixes: 6aa58d8ad20a ("f2fs: readahead encrypted block during GC")
Fixes: e3b49ea36802 ("f2fs: invalidate META_MAPPING before IPU/DIO write")
Cc: Hyeong-Jun Kim <hj514.kim@samsung.com>
Signed-off-by: Chao Yu <chao.yu@oppo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This patch adds a sysfs entry showing the unusable space in a section
made by zone capacity.
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This patch fixes counting unusable blocks set by zone capacity when
checking the valid block count in a section.
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
In order to simplify the complicated per-zone capacity, let's support
only one capacity for entire zoned device.
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Remove the redundant code and use local variant as the
argument directly. Make it more human-readable.
Signed-off-by: duguowei <duguowei@xiaomi.com>
[Jaegeuk Kim: make code neat]
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Introduce memory mode to supports "normal" and "low" memory modes.
"low" mode is to support low memory devices. Because of the nature of
low memory devices, in this mode, f2fs will try to save memory sometimes
by sacrificing performance. "normal" mode is the default mode and same
as before.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Otherwise, in image which doesn't support compression feature,
page_array_entry will be initialized w/o use.
Signed-off-by: Chao Yu <chao.yu@oppo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Current error handling is at risk of page leaks. However, we dot't seek
any failure scenarios, just use f2fs_bug_on.
Signed-off-by: Jack Qiu <jack.qiu@huawei.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Let's try to flush dirty inode again to improve subtle i_blocks mismatch.
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Switch f2fs over to the functions that are replacing
fscrypt_set_test_dummy_encryption(). Since f2fs hasn't been converted
to the new mount API yet, this doesn't really provide a benefit for
f2fs. But it allows fscrypt_set_test_dummy_encryption() to be removed.
Also take the opportunity to eliminate an #ifdef.
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This includes some urgent fixes to avoid generating corrupted inodes
caused by compressed and inline_data files. In addition, another patch
tries to avoid wrong error report which prevents a roll-forward
recovery.
-----BEGIN PGP SIGNATURE-----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=m3Fh
-----END PGP SIGNATURE-----
Merge tag 'f2fs-for-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs fixes from Jaegeuk Kim:
"Some urgent fixes to avoid generating corrupted inodes caused by
compressed and inline_data files.
In addition, avoid a wrong error report which prevents a roll-forward
recovery"
* tag 'f2fs-for-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
f2fs: do not count ENOENT for error case
f2fs: fix iostat related lock protection
f2fs: attach inline_data after setting compression
-----BEGIN PGP SIGNATURE-----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=Z57a
-----END PGP SIGNATURE-----
Merge tag 'io_uring-5.19-2022-06-24' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"A few fixes that should go into the 5.19 release. All are fixing
issues that either happened in this release, or going to stable.
In detail:
- A small series of fixlets for the poll handling, all destined for
stable (Pavel)
- Fix a merge error from myself that caused a potential -EINVAL for
the recv/recvmsg flag setting (me)
- Fix a kbuf recycling issue for partial IO (me)
- Use the original request for the inflight tracking (me)
- Fix an issue introduced this merge window with trace points using a
custom decoder function, which won't work for perf (Dylan)"
* tag 'io_uring-5.19-2022-06-24' of git://git.kernel.dk/linux-block:
io_uring: use original request task for inflight tracking
io_uring: move io_uring_get_opcode out of TP_printk
io_uring: fix double poll leak on repolling
io_uring: fix wrong arm_poll error handling
io_uring: fail links when poll fails
io_uring: fix req->apoll_events
io_uring: fix merge error in checking send/recv addr2 flags
io_uring: mark reissue requests with REQ_F_PARTIAL_IO
- Check for NULL in kretprobe_dispatcher()
NULL can now be passed in, make sure it can handle it
- Clean up unneeded #endif #ifdef of the same preprocessor check in the
middle of the block.
- Comment clean up
- Remove unneeded initialization of the "ret" variable in
__trace_uprobe_create()
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYrMu9hQccm9zdGVkdEBn
b29kbWlzLm9yZwAKCRAp5XQQmuv6qpuZAP9gS8Xcd7nenV3i9j4lCFktWQrvQwvh
wyNb9UuLqPVMUQEAkk4hzq38P2UvEOZ+v+WdJnXfOb3wpFhrxWFycz5ZVAw=
=9WXA
-----END PGP SIGNATURE-----
Merge tag 'trace-v5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
- Check for NULL in kretprobe_dispatcher()
NULL can now be passed in, make sure it can handle it
- Clean up unneeded #endif #ifdef of the same preprocessor
check in the middle of the block.
- Comment clean up
- Remove unneeded initialization of the "ret" variable in
__trace_uprobe_create()
* tag 'trace-v5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing/uprobes: Remove unwanted initialization in __trace_uprobe_create()
tracefs: Fix syntax errors in comments
tracing: Simplify conditional compilation code in tracing_set_tracer()
tracing/kprobes: Check whether get_kretprobe() returns NULL in kretprobe_dispatcher()
In prior kernels, we did file assignment always at prep time. This meant
that req->task == current. But after deferring that assignment and then
pushing the inflight tracking back in, we've got the inflight tracking
using current when it should in fact now be using req->task.
Fixup that error introduced by adding the inflight tracking back after
file assignments got modifed.
Fixes: 9cae36a094e7 ("io_uring: reinstate the inflight tracking")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This contains a couple of fixes:
- fid refcounting was incorrect in some corner cases and would
leak resources, only freed at umount time. The first three commits
fix three such cases
- cache=loose or fscache was broken when trying to write a partial
page to a file with no read permission since the rework a few releases
ago. The fix taken here is just to restore old behavior of using the
special 'writeback_fid' for such reads, which is open as root/RDWR
and such not get complains that we try to read on a WRONLY fid.
Long-term it'd be nice to get rid of this and not issue the read at
all (skip cache?) in such cases, but that direction hasn't progressed
-----BEGIN PGP SIGNATURE-----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=2yZw
-----END PGP SIGNATURE-----
Merge tag '9p-for-5.19-rc4' of https://github.com/martinetd/linux
Pull 9pfs fixes from Dominique Martinet:
"A couple of fid refcount and fscache fixes:
- fid refcounting was incorrect in some corner cases and would leak
resources, only freed at umount time. The first three commits fix
three such cases
- 'cache=loose' or fscache was broken when trying to write a partial
page to a file with no read permission since the rework a few
releases ago.
The fix taken here is just to restore old behavior of using the
special 'writeback_fid' for such reads, which is open as root/RDWR
and such not get complains that we try to read on a WRONLY fid.
Long-term it'd be nice to get rid of this and not issue the read at
all (skip cache?) in such cases, but that direction hasn't
progressed"
* tag '9p-for-5.19-rc4' of https://github.com/martinetd/linux:
9p: fix EBADF errors in cached mode
9p: Fix refcounting during full path walks for fid lookups
9p: fix fid refcount leak in v9fs_vfs_get_link
9p: fix fid refcount leak in v9fs_vfs_atomic_open_dotl
We have re-polling for partial IO, so a request can be polled twice. If
it used two poll entries the first time then on the second
io_arm_poll_handler() it will find the old apoll entry and NULL
kmalloc()'ed second entry, i.e. apoll->double_poll, so leaking it.
Fixes: 10c873334feba ("io_uring: allow re-poll if we made progress")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/fee2452494222ecc7f1f88c8fb659baef971414a.1655852245.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
-----BEGIN PGP SIGNATURE-----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=eORM
-----END PGP SIGNATURE-----
Merge tag 'for-5.19-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- print more error messages for invalid mount option values
- prevent remount with v1 space cache for subpage filesystem
- fix hang during unmount when block group reclaim task is running
* tag 'for-5.19-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: add error messages to all unrecognized mount options
btrfs: prevent remounting to v1 space cache for subpage mount
btrfs: fix hang during unmount when block group reclaim task is running
The recent patch to make afs_getattr consult the server didn't account
for the pseudo-inodes employed by the dynamic root-type afs superblock
not having a volume or a server to access, and thus an oops occurs if
such a directory is stat'd.
Fix this by checking to see if the vnode->volume pointer actually points
anywhere before following it in afs_getattr().
This can be tested by stat'ing a directory in /afs. It may be
sufficient just to do "ls /afs" and the oops looks something like:
BUG: kernel NULL pointer dereference, address: 0000000000000020
...
RIP: 0010:afs_getattr+0x8b/0x14b
...
Call Trace:
<TASK>
vfs_statx+0x79/0xf5
vfs_fstatat+0x49/0x62
Fixes: 2aeb8c86d499 ("afs: Fix afs_getattr() to refetch file status if callback break occurred")
Reported-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
Tested-by: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/165408450783.1031787.7941404776393751186.stgit@warthog.procyon.org.uk/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Otherwise, we can get a wrong cp_error mark.
Cc: <stable@vger.kernel.org>
Fixes: a7b8618aa2f0 ("f2fs: avoid infinite loop to flush node pages")
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
apoll_events should be set once in the beginning of poll arming just as
poll->events and not change after. However, currently io_uring resets it
on each __io_poll_execute() for no clear reason. There is also a place
in __io_arm_poll_handler() where we add EPOLLONESHOT to downgrade a
multishot, but forget to do the same thing with ->apoll_events, which is
buggy.
Fixes: 81459350d581e ("io_uring: cache req->apoll->events in req->cflags")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Hao Xu <howeyxu@tencent.com>
Link: https://lore.kernel.org/r/0aef40399ba75b1a4d2c2e85e6e8fd93c02fc6e4.1655814213.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
With the dropping of the IOPOLL checking in the per-opcode handlers,
we inadvertently left two checks in the recv/recvmsg and send/sendmsg
prep handlers for the same thing, and one of them includes addr2 which
holds the flags for these opcodes.
Fix it up and kill the redundant checks.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
If we mark for reissue, we assume that the buffer will remain stable.
Hence if are using a provided buffer, we need to ensure that we stick
with it for the duration of that request.
This only affects block devices that use provided buffers, as those are
the only ones that get marked with REQ_F_REISSUE.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Made iostat related locks safe to be called from irq context again.
Cc: <stable@vger.kernel.org>
Fixes: a1e09b03e6f5 ("f2fs: use iomap for direct I/O")
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Tested-by: Eddie Huang <eddie.huang@mediatek.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This fixes the below corruption.
[345393.335389] F2FS-fs (vdb): sanity_check_inode: inode (ino=6d0, mode=33206) should not have inline_data, run fsck to fix
Cc: <stable@vger.kernel.org>
Fixes: 677a82b44ebf ("f2fs: fix to do sanity check for inline inode")
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
- Fix a bug where inode flag changes would accidentally drop nrext64.
- Fix a race condition when toggling LARP mode.
-----BEGIN PGP SIGNATURE-----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=vvDX
-----END PGP SIGNATURE-----
Merge tag 'xfs-5.19-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"There's not a whole lot this time around (I'm still on vacation) but
here are some important fixes for new features merged in -rc1:
- Fix a bug where inode flag changes would accidentally drop nrext64
- Fix a race condition when toggling LARP mode"
* tag 'xfs-5.19-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: preserve DIFLAG2_NREXT64 when setting other inode attributes
xfs: fix variable state usage
xfs: fix TOCTOU race involving the new logged xattrs control knob
or error injection. Also fix up how test_dummy_encryption mount
option is handled for the new mount API. Finally, fix/cleanup a
number of comments and ext4 Documentation files.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAmKuYpcACgkQ8vlZVpUN
gaMXwwf8DSHJ3gI2Lo0wrzJm7KSS0C+HK29/rtLCZdxECQsZR156ZzSF3zAFKOwK
Yx3RJwiFxrciUUytY/MWTyalCk+M8oW1093SfRqNNZCbZNi33acnbTqioa7INnDw
snFGGEU1y0M0AUduxNWPr71P80sTyQa0ZplIc4YeR98zzMvoWgi1dvo4wNdtJNQb
Gb0FtBhgP+IeK50eBlK4O0Eg5kqd0V5OeTLUYUfsWqU28ap8dHYE48I6sIdHx6az
sa6b2+YRuBxJUV61FNujuVtkDgUHXtXM97kkGpywRSLjo4iFxlQvX9Ew4lBD9RDI
b0YHVzK/DU9M3VfiYgzGwShCb/M68w==
=NtNY
-----END PGP SIGNATURE-----
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Fix a variety of bugs, many of which were found by folks using fuzzing
or error injection.
Also fix up how test_dummy_encryption mount option is handled for the
new mount API.
Finally, fix/cleanup a number of comments and ext4 Documentation
files"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix a doubled word "need" in a comment
ext4: add reserved GDT blocks check
ext4: make variable "count" signed
ext4: correct the judgment of BUG in ext4_mb_normalize_request
ext4: fix bug_on ext4_mb_use_inode_pa
ext4: fix up test_dummy_encryption handling for new mount API
ext4: use kmemdup() to replace kmalloc + memcpy
ext4: fix super block checksum incorrect after mount
ext4: improve write performance with disabled delalloc
ext4: fix warning when submitting superblock in ext4_commit_super()
ext4, doc: remove unnecessary escaping
ext4: fix incorrect comment in ext4_bio_write_page()
fs: fix jbd2_journal_try_to_free_buffers() kernel-doc comment
-----BEGIN PGP SIGNATURE-----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=oBRl
-----END PGP SIGNATURE-----
Merge tag '5.19-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs client fixes from Steve French:
"Two cifs debugging improvements - one found to deal with debugging a
multichannel problem and one for a recent fallocate issue
This does include the two larger multichannel reconnect (dynamically
adjusting interfaces on reconnect) patches, because we recently found
an additional problem with multichannel to one server type that I want
to include at the same time"
* tag '5.19-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: when a channel is not found for server, log its connection id
smb3: add trace point for SMB2_set_eof
We capture a NULL pointer issue when resizing a corrupt ext4 image which
is freshly clear resize_inode feature (not run e2fsck). It could be
simply reproduced by following steps. The problem is because of the
resize_inode feature was cleared, and it will convert the filesystem to
meta_bg mode in ext4_resize_fs(), but the es->s_reserved_gdt_blocks was
not reduced to zero, so could we mistakenly call reserve_backup_gdb()
and passing an uninitialized resize_inode to it when adding new group
descriptors.
mkfs.ext4 /dev/sda 3G
tune2fs -O ^resize_inode /dev/sda #forget to run requested e2fsck
mount /dev/sda /mnt
resize2fs /dev/sda 8G
========
BUG: kernel NULL pointer dereference, address: 0000000000000028
CPU: 19 PID: 3243 Comm: resize2fs Not tainted 5.18.0-rc7-00001-gfde086c5ebfd #748
...
RIP: 0010:ext4_flex_group_add+0xe08/0x2570
...
Call Trace:
<TASK>
ext4_resize_fs+0xbec/0x1660
__ext4_ioctl+0x1749/0x24e0
ext4_ioctl+0x12/0x20
__x64_sys_ioctl+0xa6/0x110
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f2dd739617b
========
The fix is simple, add a check in ext4_resize_begin() to make sure that
the es->s_reserved_gdt_blocks is zero when the resize_inode feature is
disabled.
Cc: stable@kernel.org
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220601092717.763694-1-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Since dx_make_map() may return -EFSCORRUPTED now, so change "count" to
be a signed integer so we can correctly check for an error code returned
by dx_make_map().
Fixes: 46c116b920eb ("ext4: verify dir block before splitting it")
Cc: stable@kernel.org
Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20220530100047.537598-1-dingxiang@cmss.chinamobile.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
ext4_mb_normalize_request() can move logical start of allocated blocks
to reduce fragmentation and better utilize preallocation. However logical
block requested as a start of allocation (ac->ac_o_ex.fe_logical) should
always be covered by allocated blocks so we should check that by
modifying and to or in the assertion.
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20220528110017.354175-3-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Hulk Robot reported a BUG_ON:
==================================================================
kernel BUG at fs/ext4/mballoc.c:3211!
[...]
RIP: 0010:ext4_mb_mark_diskspace_used.cold+0x85/0x136f
[...]
Call Trace:
ext4_mb_new_blocks+0x9df/0x5d30
ext4_ext_map_blocks+0x1803/0x4d80
ext4_map_blocks+0x3a4/0x1a10
ext4_writepages+0x126d/0x2c30
do_writepages+0x7f/0x1b0
__filemap_fdatawrite_range+0x285/0x3b0
file_write_and_wait_range+0xb1/0x140
ext4_sync_file+0x1aa/0xca0
vfs_fsync_range+0xfb/0x260
do_fsync+0x48/0xa0
[...]
==================================================================
Above issue may happen as follows:
-------------------------------------
do_fsync
vfs_fsync_range
ext4_sync_file
file_write_and_wait_range
__filemap_fdatawrite_range
do_writepages
ext4_writepages
mpage_map_and_submit_extent
mpage_map_one_extent
ext4_map_blocks
ext4_mb_new_blocks
ext4_mb_normalize_request
>>> start + size <= ac->ac_o_ex.fe_logical
ext4_mb_regular_allocator
ext4_mb_simple_scan_group
ext4_mb_use_best_found
ext4_mb_new_preallocation
ext4_mb_new_inode_pa
ext4_mb_use_inode_pa
>>> set ac->ac_b_ex.fe_len <= 0
ext4_mb_mark_diskspace_used
>>> BUG_ON(ac->ac_b_ex.fe_len <= 0);
we can easily reproduce this problem with the following commands:
`fallocate -l100M disk`
`mkfs.ext4 -b 1024 -g 256 disk`
`mount disk /mnt`
`fsstress -d /mnt -l 0 -n 1000 -p 1`
The size must be smaller than or equal to EXT4_BLOCKS_PER_GROUP.
Therefore, "start + size <= ac->ac_o_ex.fe_logical" may occur
when the size is truncated. So start should be the start position of
the group where ac_o_ex.fe_logical is located after alignment.
In addition, when the value of fe_logical or EXT4_BLOCKS_PER_GROUP
is very large, the value calculated by start_off is more accurate.
Cc: stable@kernel.org
Fixes: cd648b8a8fd5 ("ext4: trim allocation requests to group size")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/20220528110017.354175-2-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Since ext4 was converted to the new mount API, the test_dummy_encryption
mount option isn't being handled entirely correctly, because the needed
fscrypt_set_test_dummy_encryption() helper function combines
parsing/checking/applying into one function. That doesn't work well
with the new mount API, which split these into separate steps.
This was sort of okay anyway, due to the parsing logic that was copied
from fscrypt_set_test_dummy_encryption() into ext4_parse_param(),
combined with an additional check in ext4_check_test_dummy_encryption().
However, these overlooked the case of changing the value of
test_dummy_encryption on remount, which isn't allowed but ext4 wasn't
detecting until ext4_apply_options() when it's too late to fail.
Another bug is that if test_dummy_encryption was specified multiple
times with an argument, memory was leaked.
Fix this up properly by using the new helper functions that allow
splitting up the parse/check/apply steps for test_dummy_encryption.
Fixes: cebe85d570cf ("ext4: switch to the new mount api")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20220526040412.173025-1-ebiggers@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
