Re: [PATCH] memory:bugxfix panic on cat or write /dev/kmem

2016-06-27 Thread Michal Hocko
On Sat 25-06-16 09:20:06, Chenjie (K) wrote: > > > On 2016/6/23 20:42, Michal Hocko wrote: > > On Fri 24-06-16 01:30:10, chenj...@huawei.com wrote: > > > From: chenjie > > > > > > cat /dev/kmem and echo > /dev/kmem will lead panic > > > > Writing to /dev/kmem without being extremely careful is

Re: [PATCH] memory:bugxfix panic on cat or write /dev/kmem

2016-06-24 Thread Chenjie (K)
On 2016/6/23 20:42, Michal Hocko wrote: On Fri 24-06-16 01:30:10, chenj...@huawei.com wrote: From: chenjie cat /dev/kmem and echo > /dev/kmem will lead panic Writing to /dev/kmem without being extremely careful is a disaster AFAIK and even reading from the file can lead to unexpected resul

Re: [PATCH] memory:bugxfix panic on cat or write /dev/kmem

2016-06-23 Thread Michal Hocko
On Fri 24-06-16 01:30:10, chenj...@huawei.com wrote: > From: chenjie > > cat /dev/kmem and echo > /dev/kmem will lead panic Writing to /dev/kmem without being extremely careful is a disaster AFAIK and even reading from the file can lead to unexpected results. Anyway I am trying to understand wha

[PATCH] memory:bugxfix panic on cat or write /dev/kmem

2016-06-23 Thread chenjie6
From: chenjie cat /dev/kmem and echo > /dev/kmem will lead panic Signed-off-by: chenjie --- drivers/char/mem.c | 7 +++ 1 file changed, 7 insertions(+) diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 71025c2..4bdde28 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -