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mISDN: Fix a sleep-in-atomic bug
authorJia-Ju Bai <baijiaju1990@163.com>
Wed, 31 May 2017 07:08:25 +0000 (15:08 +0800)
committerSasha Levin <alexander.levin@microsoft.com>
Wed, 23 May 2018 01:36:27 +0000 (21:36 -0400)
commitaba8f24a05d113f87c67d760ba1085e57d8f1417
tree04d7d6c526694b244083c5b760f6d64816ef2c8ftree
parent7f7b79ed69748b1f9c9822b0d067180d845f90bdcommit | diff
mISDN: Fix a sleep-in-atomic bug

[ Upstream commit 93818da5eed63fbc17b64080406ea53b86b23309 ]

The driver may sleep under a read spin lock, and the function call path is:
send_socklist (acquire the lock by read_lock)
  skb_copy(GFP_KERNEL) --> may sleep

To fix it, the "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>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
drivers/isdn/mISDN/stack.c diff | blob | history
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