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

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The driver may sleep under a spinlock.
The function call path is:
update_beacon (acquire the spinlock)
  update_BCNTIM
    set_tx_beacon_cmd
      kzalloc(GFP_KERNEL) --> may sleep
      kmemdup(GFP_KERNEL) --> may sleep

To fix it, GFP_KERNEL is replaced with GFP_ATOMIC.

This bug is found by my static analysis tool(DSAC) and checked by my code review.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Jia-Ju Bai 2017-12-12 21:08:06 +08:00 • committed by Greg Kroah-Hartman

parent d6a5eee8e0

commit 705f385849

1 changed files with 2 additions and 2 deletions

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drivers/staging/rtl8188eu/core/rtw_mlme_ext.c

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