On 2020/3/22 22:56, Joe Perches wrote:
> On Sun, 2020-03-22 at 21:56 +0800, Chao Yu wrote:
>> From: Chao Yu
>>
>> 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 memor
On Sun, 2020-03-22 at 21:56 +0800, Chao Yu wrote:
> From: Chao Yu
>
> 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, corrupt
From: Chao Yu
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
