Re: [PATCH v2 1/2] printk: Fix panic caused by passing log_buf_len to command line

[Sergey Senozhatsky]

On (09/22/18 23:36), He Zhe wrote:
> I'd like to fix the above issues. But can I have your opinions about how to
> handle the syscall?

Hmm. This part is complex, I need to look at it more.
A signed int is a good buffer size limit for 32-bit user space.
But this also means that syslog might experience some problems
doing SYSLOG_ACTION_READ_ALL on a 32-bit system with a 4G log_buf.
Not to mention SYSLOG_ACTION_READ_ALL on a 64-bit system with a
log_buf=32G. So *maybe* things are alredy a bit broken in this
department. Dunno, need to think more.

	-ss