Re: [LKP] [hrtimer] 336a9cde10: WARNING:at_kernel/time/hrtimer.c:#hrtimer_init
On 19/02/17 21:06, kernel test robot wrote:
FYI, we noticed the following commit:
commit: 336a9cde10d641e70bac67d90ae91b3190c3edca ("hrtimer: Catch invalid clockids
again")
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git timers/core
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -cpu host -smp 2 -m 4G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
This is indeed the expected effect: mac80211_hwsim is using an illegal
clockid, and we're letting the world now about it. The obvious
workaround is the following patch:
diff --git a/drivers/net/wireless/mac80211_hwsim.c
b/drivers/net/wireless/mac80211_hwsim.c
index 1620a5d2757d..0889fc81ce9e 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -2671,7 +2671,7 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
tasklet_hrtimer_init(&data->beacon_timer,
mac80211_hwsim_beacon,
- CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
+ CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
spin_lock_bh(&hwsim_radio_lock);
list_add_tail(&data->list, &hwsim_radios);
which suppresses the warning and preserves the current behaviour,
but doesn't provide what the author expected (the kernel never
pretended to support CLOCK_MONOTONIC_RAW though).
Thanks,
M.
--
Jazz is not dead. It just smells funny...