Revision 2aa70f864955bf02362e3fb3008e4208d7a17a98 authored by Geert Uytterhoeven on 13 September 2017, 17:42:05 UTC, committed by David S. Miller on 15 September 2017, 21:24:49 UTC
If the network interface is kept running during suspend, the net core may call net_device_ops.ndo_start_xmit() while the Ethernet device is still suspended, which may lead to a system crash. E.g. on sh73a0/kzm9g and r8a73a4/ape6evm, the external Ethernet chip is driven by a PM controlled clock. If the Ethernet registers are accessed while the clock is not running, the system will crash with an imprecise external abort. As this is a race condition with a small time window, it is not so easy to trigger at will. Using pm_test may increase your chances: # echo 0 > /sys/module/printk/parameters/console_suspend # echo platform > /sys/power/pm_test # echo mem > /sys/power/state To fix this, make sure the network interface is quietened during suspend. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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File | Mode | Size |
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apei | ||
dsd | ||
DSD-properties-rules.txt | -rw-r--r-- | 4.6 KB |
acpi-lid.txt | -rw-r--r-- | 4.9 KB |
aml-debugger.txt | -rw-r--r-- | 1.9 KB |
debug.txt | -rw-r--r-- | 5.6 KB |
dsdt-override.txt | -rw-r--r-- | 245 bytes |
enumeration.txt | -rw-r--r-- | 14.1 KB |
gpio-properties.txt | -rw-r--r-- | 8.0 KB |
i2c-muxes.txt | -rw-r--r-- | 1.5 KB |
initrd_table_override.txt | -rw-r--r-- | 4.2 KB |
linuxized-acpica.txt | -rw-r--r-- | 12.9 KB |
method-customizing.txt | -rw-r--r-- | 3.1 KB |
method-tracing.txt | -rw-r--r-- | 9.0 KB |
namespace.txt | -rw-r--r-- | 17.1 KB |
osi.txt | -rw-r--r-- | 8.2 KB |
scan_handlers.txt | -rw-r--r-- | 4.3 KB |
ssdt-overlays.txt | -rw-r--r-- | 6.1 KB |
video_extension.txt | -rw-r--r-- | 4.0 KB |
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