On Fri, Oct 20, 2017 at 12:11 PM, kbuild test robot wrote:
> Hi Eric,
>
> [auto build test WARNING on net/master]
>
> url:
> https://github.com/0day-ci/linux/commits/Eric-Dumazet/packet-avoid-panic-in-packet_getsockopt/20171021-003615
> reproduce:
> # apt-get install sparse
> m
Hi Eric,
[auto build test WARNING on net/master]
url:
https://github.com/0day-ci/linux/commits/Eric-Dumazet/packet-avoid-panic-in-packet_getsockopt/20171021-003615
reproduce:
# apt-get install sparse
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse
From: Eric Dumazet
syzkaller got crashes in packet_getsockopt() processing
PACKET_ROLLOVER_STATS command while another thread was managing
to change po->rollover
Using RCU will fix this bug. We might later add proper RCU annotations
for sparse sake.
In v2: I replaced kfree(rollover) in fanout_a
