https://github.com/torvalds/linux
Revision a20049071796691cf99eb6433968fc3c27632b95 authored by Heiner Kallweit on 13 February 2019, 19:12:54 UTC, committed by David S. Miller on 14 February 2019, 17:04:55 UTC
Russell reported the following race in the phylib state machine (quoting from his mail): if (phy_polling_mode(phydev) && phy_is_started(phydev)) phy_queue_state_machine(phydev, PHY_STATE_TIME); state = PHY_UP thread 0 thread 1 phy_disconnect() +-phy_is_started() phy_is_started() | `-phy_stop() +-phydev->state = PHY_HALTED `-phy_stop_machine() `-cancel_delayed_work_sync() phy_queue_state_machine() `-mod_delayed_work() At this point, the phydev->state_queue() has been added back onto the system workqueue despite phy_stop_machine() having been called and cancel_delayed_work_sync() called on it. Fix this by protecting the complete operation in thread 0. Fixes: 2b3e88ea6528 ("net: phy: improve phy state checking") Reported-by: Russell King - ARM Linux admin <linux@armlinux.org.uk> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Tip revision: a20049071796691cf99eb6433968fc3c27632b95 authored by Heiner Kallweit on 13 February 2019, 19:12:54 UTC
net: phy: fix potential race in the phylib state machine
net: phy: fix potential race in the phylib state machine
Tip revision: a200490
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arch | ||
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certs | ||
crypto | ||
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include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
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net | ||
samples | ||
scripts | ||
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usr | ||
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.cocciconfig | -rw-r--r-- | 59 bytes |
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.gitignore | -rw-r--r-- | 1.5 KB |
.mailmap | -rw-r--r-- | 10.7 KB |
COPYING | -rw-r--r-- | 423 bytes |
CREDITS | -rw-r--r-- | 96.9 KB |
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Kconfig | -rw-r--r-- | 563 bytes |
MAINTAINERS | -rw-r--r-- | 482.2 KB |
Makefile | -rw-r--r-- | 59.1 KB |
README | -rw-r--r-- | 727 bytes |
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