Re: [PATCH] isdn: Fix a sleep-in-atomic bug

[David Miller]

From: Jia-Ju Bai <baijiaju1990@xxxxxxx>
Date: Wed, 31 May 2017 09:40:11 +0800

> The driver may sleep under a spin lock, the function call path is:
> isdn_ppp_mp_receive (acquire the lock)
>   isdn_ppp_mp_reassembly
>     isdn_ppp_push_higher
>       isdn_ppp_decompress
>         isdn_ppp_ccp_reset_trans
>           isdn_ppp_ccp_reset_alloc_state
>             kzalloc(GFP_KERNEL) --> may sleep
> 
> To fixed it, the "GFP_KERNEL" is replaced with "GFP_ATOMIC".
> 
> Signed-off-by: Jia-Ju Bai <baijiaju1990@xxxxxxx>

Applied.