From: Jia-Ju Bai
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
> isd
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 sle
