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| author | Jia-Ju Bai <baijiaju1990@163.com> | 2017-06-10 11:03:35 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-11 00:20:38 +0200 |
| commit | 343eba69c6968190d8654b857aea952fed9a6749 (patch) | |
| tree | 05088e941fe1061b7d12f351302be316949352c0 /drivers/net/ethernet/neterion | |
| parent | net: caif: Fix a sleep-in-atomic bug in cfpkt_create_pfx (diff) | |
| download | linux-343eba69c6968190d8654b857aea952fed9a6749.tar.xz linux-343eba69c6968190d8654b857aea952fed9a6749.zip | |
net: tipc: Fix a sleep-in-atomic bug in tipc_msg_reverse
The kernel may sleep under a rcu read lock in tipc_msg_reverse, and the
function call path is:
tipc_l2_rcv_msg (acquire the lock by rcu_read_lock)
tipc_rcv
tipc_sk_rcv
tipc_msg_reverse
pskb_expand_head(GFP_KERNEL) --> may sleep
tipc_node_broadcast
tipc_node_xmit_skb
tipc_node_xmit
tipc_sk_rcv
tipc_msg_reverse
pskb_expand_head(GFP_KERNEL) --> may sleep
To fix it, "GFP_KERNEL" is replaced with "GFP_ATOMIC".
Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/neterion')
0 files changed, 0 insertions, 0 deletions