rtl8188eu: Fix a possible sleep-in-atomic bug in rtw_createbss_cmd

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[ Upstream commit 2bf9806d42 ]

The driver may sleep under a spinlock, and the function call path is:
rtw_surveydone_event_callback(acquire the spinlock)
  rtw_createbss_cmd
    kzalloc(GFP_KERNEL) --> may sleep

To fix it, GFP_KERNEL is replaced with GFP_ATOMIC.
This bug is found by my static analysis tool and my code review.

Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Jia-Ju Bai 2017-10-08 19:54:45 +08:00 • committed by Greg Kroah-Hartman

parent f18b2039d9

commit f898f36664

1 changed files with 1 additions and 1 deletions

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drivers/staging/rtl8188eu/core/rtw_cmd.c

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