From: Eric Dumazet
Date: Tue, 24 Sep 2019 12:29:34 -0700
> After commit a2c11b034142 ("kcm: use BPF_PROG_RUN")
> syzbot easily triggers the warning in cant_sleep().
>
> As explained in commit 6cab5e90ab2b ("bpf: run bpf programs
> with preemption disabled") we need to disable preemption before
>
After commit a2c11b034142 ("kcm: use BPF_PROG_RUN")
syzbot easily triggers the warning in cant_sleep().
As explained in commit 6cab5e90ab2b ("bpf: run bpf programs
with preemption disabled") we need to disable preemption before
running bpf programs.
BUG: assuming atomic context at net/kcm/kcmsock
