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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partitions | ||
Kconfig | -rw-r--r-- | 6.1 KB |
Kconfig.iosched | -rw-r--r-- | 2.7 KB |
Makefile | -rw-r--r-- | 1.4 KB |
badblocks.c | -rw-r--r-- | 14.5 KB |
bfq-cgroup.c | -rw-r--r-- | 33.0 KB |
bfq-iosched.c | -rw-r--r-- | 163.7 KB |
bfq-iosched.h | -rw-r--r-- | 31.4 KB |
bfq-wf2q.c | -rw-r--r-- | 52.1 KB |
bio-integrity.c | -rw-r--r-- | 13.9 KB |
bio.c | -rw-r--r-- | 51.1 KB |
blk-cgroup.c | -rw-r--r-- | 37.6 KB |
blk-core.c | -rw-r--r-- | 95.4 KB |
blk-exec.c | -rw-r--r-- | 2.9 KB |
blk-flush.c | -rw-r--r-- | 16.6 KB |
blk-integrity.c | -rw-r--r-- | 12.1 KB |
blk-ioc.c | -rw-r--r-- | 10.9 KB |
blk-lib.c | -rw-r--r-- | 9.8 KB |
blk-map.c | -rw-r--r-- | 5.9 KB |
blk-merge.c | -rw-r--r-- | 19.7 KB |
blk-mq-cpumap.c | -rw-r--r-- | 1.7 KB |
blk-mq-debugfs.c | -rw-r--r-- | 23.4 KB |
blk-mq-debugfs.h | -rw-r--r-- | 2.1 KB |
blk-mq-pci.c | -rw-r--r-- | 1.6 KB |
blk-mq-rdma.c | -rw-r--r-- | 1.7 KB |
blk-mq-sched.c | -rw-r--r-- | 14.5 KB |
blk-mq-sched.h | -rw-r--r-- | 2.8 KB |
blk-mq-sysfs.c | -rw-r--r-- | 8.2 KB |
blk-mq-tag.c | -rw-r--r-- | 11.4 KB |
blk-mq-tag.h | -rw-r--r-- | 2.3 KB |
blk-mq-virtio.c | -rw-r--r-- | 1.7 KB |
blk-mq.c | -rw-r--r-- | 70.0 KB |
blk-mq.h | -rw-r--r-- | 4.0 KB |
blk-settings.c | -rw-r--r-- | 28.7 KB |
blk-softirq.c | -rw-r--r-- | 4.3 KB |
blk-stat.c | -rw-r--r-- | 5.5 KB |
blk-stat.h | -rw-r--r-- | 5.5 KB |
blk-sysfs.c | -rw-r--r-- | 23.4 KB |
blk-tag.c | -rw-r--r-- | 10.0 KB |
blk-throttle.c | -rw-r--r-- | 67.6 KB |
blk-timeout.c | -rw-r--r-- | 5.9 KB |
blk-wbt.c | -rw-r--r-- | 17.6 KB |
blk-wbt.h | -rw-r--r-- | 4.0 KB |
blk-zoned.c | -rw-r--r-- | 7.6 KB |
blk.h | -rw-r--r-- | 10.9 KB |
bounce.c | -rw-r--r-- | 6.4 KB |
bsg-lib.c | -rw-r--r-- | 7.1 KB |
bsg.c | -rw-r--r-- | 22.9 KB |
cfq-iosched.c | -rw-r--r-- | 127.1 KB |
cmdline-parser.c | -rw-r--r-- | 4.9 KB |
compat_ioctl.c | -rw-r--r-- | 10.8 KB |
deadline-iosched.c | -rw-r--r-- | 11.2 KB |
elevator.c | -rw-r--r-- | 26.8 KB |
genhd.c | -rw-r--r-- | 47.2 KB |
ioctl.c | -rw-r--r-- | 15.0 KB |
ioprio.c | -rw-r--r-- | 5.0 KB |
kyber-iosched.c | -rw-r--r-- | 21.0 KB |
mq-deadline.c | -rw-r--r-- | 16.8 KB |
noop-iosched.c | -rw-r--r-- | 2.6 KB |
opal_proto.h | -rw-r--r-- | 9.3 KB |
partition-generic.c | -rw-r--r-- | 16.7 KB |
scsi_ioctl.c | -rw-r--r-- | 20.0 KB |
sed-opal.c | -rw-r--r-- | 57.7 KB |
t10-pi.c | -rw-r--r-- | 4.9 KB |
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