linux-stable.git/fs/f2fs, branch v6.2.3

f2fs: Revert "f2fs: truncate blocks in batch in __complete_revoke_list()"

2023-03-10T08:29:31+00:00

commit c7dbc06688292db34c1bb9c715e29ac4935af994 upstream.

We should not truncate replaced blocks, and were supposed to truncate the first
part as well.

This reverts commit 78a99fe6254cad4be310cd84af39f6c46b668c72.

Cc: stable@vger.kernel.org
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim 
Signed-off-by: Greg Kroah-Hartman

f2fs: fix kernel crash due to null io->bio

2023-03-10T08:29:30+00:00

commit 267c159f9c7bcb7009dae16889b880c5ed8759a8 upstream.

We should return when io->bio is null before doing anything. Otherwise, panic.

BUG: kernel NULL pointer dereference, address: 0000000000000010
RIP: 0010:__submit_merged_write_cond+0x164/0x240 [f2fs]
Call Trace:
 
 f2fs_submit_merged_write+0x1d/0x30 [f2fs]
 commit_checkpoint+0x110/0x1e0 [f2fs]
 f2fs_write_checkpoint+0x9f7/0xf00 [f2fs]
 ? __pfx_issue_checkpoint_thread+0x10/0x10 [f2fs]
 __checkpoint_and_complete_reqs+0x84/0x190 [f2fs]
 ? preempt_count_add+0x82/0xc0
 ? __pfx_issue_checkpoint_thread+0x10/0x10 [f2fs]
 issue_checkpoint_thread+0x4c/0xf0 [f2fs]
 ? __pfx_autoremove_wake_function+0x10/0x10
 kthread+0xff/0x130
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x2c/0x50
 

Cc: stable@vger.kernel.org # v5.18+
Fixes: 64bf0eef0171 ("f2fs: pass the bio operation to bio_alloc_bioset")
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim 
Signed-off-by: Greg Kroah-Hartman

f2fs: fix cgroup writeback accounting with fs-layer encryption

2023-03-10T08:29:30+00:00

commit 844545c51a5b2a524b22a2fe9d0b353b827d24b4 upstream.

When writing a page from an encrypted file that is using
filesystem-layer encryption (not inline encryption), f2fs encrypts the
pagecache page into a bounce page, then writes the bounce page.

It also passes the bounce page to wbc_account_cgroup_owner().  That's
incorrect, because the bounce page is a newly allocated temporary page
that doesn't have the memory cgroup of the original pagecache page.
This makes wbc_account_cgroup_owner() not account the I/O to the owner
of the pagecache page as it should.

Fix this by always passing the pagecache page to
wbc_account_cgroup_owner().

Fixes: 578c647879f7 ("f2fs: implement cgroup writeback support")
Cc: stable@vger.kernel.org
Reported-by: Matthew Wilcox (Oracle) 
Signed-off-by: Eric Biggers 
Acked-by: Tejun Heo 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim 
Signed-off-by: Greg Kroah-Hartman

f2fs: retry to update the inode page given data corruption

2023-03-10T08:29:30+00:00

commit 3aa51c61cb4a4dcb40df51ac61171e9ac5a35321 upstream.

If the storage gives a corrupted node block due to short power failure and
reset, f2fs stops the entire operations by setting the checkpoint failure flag.

Let's give more chances to live by re-issuing IOs for a while in such critical
path.

Cc: stable@vger.kernel.org
Suggested-by: Randall Huang 
Suggested-by: Chao Yu 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim 
Signed-off-by: Greg Kroah-Hartman

f2fs: fix information leak in f2fs_move_inline_dirents()

2023-03-10T08:29:30+00:00

commit 9a5571cff4ffcfc24847df9fd545cc5799ac0ee5 upstream.

When converting an inline directory to a regular one, f2fs is leaking
uninitialized memory to disk because it doesn't initialize the entire
directory block.  Fix this by zero-initializing the block.

This bug was introduced by commit 4ec17d688d74 ("f2fs: avoid unneeded
initializing when converting inline dentry"), which didn't consider the
security implications of leaking uninitialized memory to disk.

This was found by running xfstest generic/435 on a KMSAN-enabled kernel.

Fixes: 4ec17d688d74 ("f2fs: avoid unneeded initializing when converting inline dentry")
Cc:  # v4.3+
Signed-off-by: Eric Biggers 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim 
Signed-off-by: Greg Kroah-Hartman

f2fs: let's avoid panic if extent_tree is not created

2023-01-03T16:59:06+00:00

This patch avoids the below panic.

pc : __lookup_extent_tree+0xd8/0x760
lr : f2fs_do_write_data_page+0x104/0x87c
sp : ffffffc010cbb3c0
x29: ffffffc010cbb3e0 x28: 0000000000000000
x27: ffffff8803e7f020 x26: ffffff8803e7ed40
x25: ffffff8803e7f020 x24: ffffffc010cbb460
x23: ffffffc010cbb480 x22: 0000000000000000
x21: 0000000000000000 x20: ffffffff22e90900
x19: 0000000000000000 x18: ffffffc010c5d080
x17: 0000000000000000 x16: 0000000000000020
x15: ffffffdb1acdbb88 x14: ffffff888759e2b0
x13: 0000000000000000 x12: ffffff802da49000
x11: 000000000a001200 x10: ffffff8803e7ed40
x9 : ffffff8023195800 x8 : ffffff802da49078
x7 : 0000000000000001 x6 : 0000000000000000
x5 : 0000000000000006 x4 : ffffffc010cbba28
x3 : 0000000000000000 x2 : ffffffc010cbb480
x1 : 0000000000000000 x0 : ffffff8803e7ed40
Call trace:
 __lookup_extent_tree+0xd8/0x760
 f2fs_do_write_data_page+0x104/0x87c
 f2fs_write_single_data_page+0x420/0xb60
 f2fs_write_cache_pages+0x418/0xb1c
 __f2fs_write_data_pages+0x428/0x58c
 f2fs_write_data_pages+0x30/0x40
 do_writepages+0x88/0x190
 __writeback_single_inode+0x48/0x448
 writeback_sb_inodes+0x468/0x9e8
 __writeback_inodes_wb+0xb8/0x2a4
 wb_writeback+0x33c/0x740
 wb_do_writeback+0x2b4/0x400
 wb_workfn+0xe4/0x34c
 process_one_work+0x24c/0x5bc
 worker_thread+0x3e8/0xa50
 kthread+0x150/0x1b4

Signed-off-by: Jaegeuk Kim

f2fs: should use a temp extent_info for lookup

2023-01-03T16:59:06+00:00

Otherwise, __lookup_extent_tree() will override the given extent_info which will
be used by caller.

Signed-off-by: Jaegeuk Kim

f2fs: don't mix to use union values in extent_info

2023-01-03T16:59:06+00:00

Let's explicitly use the defined values in block_age case only.

Signed-off-by: Jaegeuk Kim

f2fs: initialize extent_cache parameter

2023-01-03T16:59:05+00:00

This can avoid confusing tracepoint values.

Signed-off-by: Jaegeuk Kim

f2fs: fix to avoid NULL pointer dereference in f2fs_issue_flush()

2023-01-03T16:58:47+00:00

With below two cases, it will cause NULL pointer dereference when
accessing SM_I(sbi)->fcc_info in f2fs_issue_flush().

a) If kthread_run() fails in f2fs_create_flush_cmd_control(), it will
release SM_I(sbi)->fcc_info,

- mount -o noflush_merge /dev/vda /mnt/f2fs
- mount -o remount,flush_merge /dev/vda /mnt/f2fs  -- kthread_run() fails
- dd if=/dev/zero of=/mnt/f2fs/file bs=4k count=1 conv=fsync

b) we will never allocate memory for SM_I(sbi)->fcc_info w/ below
testcase,

- mount -o ro /dev/vda /mnt/f2fs
- mount -o rw,remount /dev/vda /mnt/f2fs
- dd if=/dev/zero of=/mnt/f2fs/file bs=4k count=1 conv=fsync

In order to fix this issue, let change as below:
- fix error path handling in f2fs_create_flush_cmd_control().
- allocate SM_I(sbi)->fcc_info even if readonly is on.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim