Messages in this thread | | | From | Jia-Ju Bai <> | Subject | [BUG] b44: two possible sleep-in-atomic bugs in b44_set_link_ksettings and b44_ioctl | Date | Wed, 13 Dec 2017 11:29:46 +0800 |
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The driver may sleep under a spinlock. The function call paths are: b44_set_link_ksettings (acquire the spinlock) phy_ethtool_ksettings_set phy_start_aneg phy_start_aneg_priv mutex_lock --> may sleep
b44_ioctl (acquire the spinlock) phy_mii_ioctl mdiobus_read mutex_lock --> may sleep
I do not find a good way to fix them, so I only report. These possible bugs are found by my static analysis tool (DSAC) and checked by my code review.
Thanks, Jia-Ju Bai
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