On 2020/3/23 23:10, Jaegeuk Kim wrote:
> On 03/23, Joe Perches wrote:
>> On Mon, 2020-03-23 at 11:18 +0800, Chao Yu wrote:
>>> f2fs_inode_info.flags is unsigned long variable, it has 32 bits
>>> in 32bit architecture, since we introduced FI_MMAP_FILE flag
>>> when we support data compression, we
On 03/23, Joe Perches wrote:
> On Mon, 2020-03-23 at 11:18 +0800, Chao Yu wrote:
> > f2fs_inode_info.flags is unsigned long variable, it has 32 bits
> > in 32bit architecture, since we introduced FI_MMAP_FILE flag
> > when we support data compression, we may access memory cross
> > the border of
On Mon, 2020-03-23 at 11:18 +0800, Chao Yu wrote:
> f2fs_inode_info.flags is unsigned long variable, it has 32 bits
> in 32bit architecture, since we introduced FI_MMAP_FILE flag
> when we support data compression, we may access memory cross
> the border of .flags field, corrupting .i_sem field,
f2fs_inode_info.flags is unsigned long variable, it has 32 bits
in 32bit architecture, since we introduced FI_MMAP_FILE flag
when we support data compression, we may access memory cross
the border of .flags field, corrupting .i_sem field, result in
below deadlock.
To fix this issue, let's expand
