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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bpf | ||
cgroup | ||
configs | ||
debug | ||
events | ||
gcov | ||
irq | ||
livepatch | ||
locking | ||
power | ||
printk | ||
rcu | ||
sched | ||
time | ||
trace | ||
.gitignore | -rw-r--r-- | 69 bytes |
Kconfig.freezer | -rw-r--r-- | 52 bytes |
Kconfig.hz | -rw-r--r-- | 1.6 KB |
Kconfig.locks | -rw-r--r-- | 4.8 KB |
Kconfig.preempt | -rw-r--r-- | 2.1 KB |
Makefile | -rw-r--r-- | 3.9 KB |
acct.c | -rw-r--r-- | 15.4 KB |
async.c | -rw-r--r-- | 9.9 KB |
audit.c | -rw-r--r-- | 62.1 KB |
audit.h | -rw-r--r-- | 11.0 KB |
audit_fsnotify.c | -rw-r--r-- | 6.1 KB |
audit_tree.c | -rw-r--r-- | 23.9 KB |
audit_watch.c | -rw-r--r-- | 14.6 KB |
auditfilter.c | -rw-r--r-- | 33.9 KB |
auditsc.c | -rw-r--r-- | 65.3 KB |
backtracetest.c | -rw-r--r-- | 2.1 KB |
bounds.c | -rw-r--r-- | 703 bytes |
capability.c | -rw-r--r-- | 13.9 KB |
compat.c | -rw-r--r-- | 16.6 KB |
configs.c | -rw-r--r-- | 2.8 KB |
context_tracking.c | -rw-r--r-- | 6.3 KB |
cpu.c | -rw-r--r-- | 43.3 KB |
cpu_pm.c | -rw-r--r-- | 6.0 KB |
crash_core.c | -rw-r--r-- | 11.2 KB |
crash_dump.c | -rw-r--r-- | 1.3 KB |
cred.c | -rw-r--r-- | 21.5 KB |
delayacct.c | -rw-r--r-- | 4.5 KB |
dma.c | -rw-r--r-- | 3.6 KB |
elfcore.c | -rw-r--r-- | 396 bytes |
exec_domain.c | -rw-r--r-- | 1.4 KB |
exit.c | -rw-r--r-- | 44.1 KB |
extable.c | -rw-r--r-- | 4.3 KB |
fork.c | -rw-r--r-- | 58.8 KB |
freezer.c | -rw-r--r-- | 4.4 KB |
futex.c | -rw-r--r-- | 95.2 KB |
futex_compat.c | -rw-r--r-- | 4.5 KB |
groups.c | -rw-r--r-- | 4.9 KB |
hung_task.c | -rw-r--r-- | 6.2 KB |
irq_work.c | -rw-r--r-- | 4.4 KB |
jump_label.c | -rw-r--r-- | 19.2 KB |
kallsyms.c | -rw-r--r-- | 16.5 KB |
kcmp.c | -rw-r--r-- | 5.7 KB |
kcov.c | -rw-r--r-- | 6.9 KB |
kexec.c | -rw-r--r-- | 7.0 KB |
kexec_core.c | -rw-r--r-- | 30.8 KB |
kexec_file.c | -rw-r--r-- | 25.4 KB |
kexec_internal.h | -rw-r--r-- | 885 bytes |
kmod.c | -rw-r--r-- | 5.0 KB |
kprobes.c | -rw-r--r-- | 62.6 KB |
ksysfs.c | -rw-r--r-- | 6.3 KB |
kthread.c | -rw-r--r-- | 32.1 KB |
latencytop.c | -rw-r--r-- | 7.9 KB |
memremap.c | -rw-r--r-- | 15.0 KB |
module-internal.h | -rw-r--r-- | 458 bytes |
module.c | -rw-r--r-- | 110.4 KB |
module_signing.c | -rw-r--r-- | 2.2 KB |
notifier.c | -rw-r--r-- | 16.3 KB |
nsproxy.c | -rw-r--r-- | 6.5 KB |
padata.c | -rw-r--r-- | 25.4 KB |
panic.c | -rw-r--r-- | 16.2 KB |
params.c | -rw-r--r-- | 23.1 KB |
pid.c | -rw-r--r-- | 14.9 KB |
pid_namespace.c | -rw-r--r-- | 11.8 KB |
profile.c | -rw-r--r-- | 14.8 KB |
ptrace.c | -rw-r--r-- | 32.7 KB |
range.c | -rw-r--r-- | 3.0 KB |
reboot.c | -rw-r--r-- | 13.3 KB |
relay.c | -rw-r--r-- | 32.1 KB |
resource.c | -rw-r--r-- | 39.3 KB |
seccomp.c | -rw-r--r-- | 24.1 KB |
signal.c | -rw-r--r-- | 95.9 KB |
smp.c | -rw-r--r-- | 21.3 KB |
smpboot.c | -rw-r--r-- | 13.3 KB |
smpboot.h | -rw-r--r-- | 601 bytes |
softirq.c | -rw-r--r-- | 19.0 KB |
stacktrace.c | -rw-r--r-- | 1.8 KB |
stop_machine.c | -rw-r--r-- | 17.1 KB |
sys.c | -rw-r--r-- | 60.5 KB |
sys_ni.c | -rw-r--r-- | 7.2 KB |
sysctl.c | -rw-r--r-- | 73.4 KB |
sysctl_binary.c | -rw-r--r-- | 50.9 KB |
task_work.c | -rw-r--r-- | 3.1 KB |
taskstats.c | -rw-r--r-- | 15.4 KB |
test_kprobes.c | -rw-r--r-- | 7.4 KB |
torture.c | -rw-r--r-- | 21.0 KB |
tracepoint.c | -rw-r--r-- | 14.6 KB |
tsacct.c | -rw-r--r-- | 5.1 KB |
ucount.c | -rw-r--r-- | 5.7 KB |
uid16.c | -rw-r--r-- | 5.0 KB |
umh.c | -rw-r--r-- | 15.2 KB |
up.c | -rw-r--r-- | 2.0 KB |
user-return-notifier.c | -rw-r--r-- | 1.3 KB |
user.c | -rw-r--r-- | 5.4 KB |
user_namespace.c | -rw-r--r-- | 27.4 KB |
utsname.c | -rw-r--r-- | 3.6 KB |
utsname_sysctl.c | -rw-r--r-- | 3.0 KB |
watchdog.c | -rw-r--r-- | 25.3 KB |
watchdog_hld.c | -rw-r--r-- | 7.3 KB |
workqueue.c | -rw-r--r-- | 156.7 KB |
workqueue_internal.h | -rw-r--r-- | 2.2 KB |
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