On Wed, 30 Sep 2015 23:59:43 +0200, Olivier Bonvalet wrote: > for information, I've just upgraded 6 servers from Linux 4.1.8 to Linux > 4.1.9, and have some random soft lockup. If this can help :
Congratulations! You're not the first one to get hit by this, but you are probably the first one to get a meaningful stacktrace! \o/ > [ 204.478380] Call Trace: > [ 204.478381] <IRQ> > [ 204.478385] [<ffffffff81076121>] ? try_to_del_timer_sync+0x43/0x4d > [ 204.478386] [<ffffffff810760de>] ? del_timer+0x4d/0x4d > [ 204.478388] [<ffffffff8107614b>] ? del_timer_sync+0x20/0x3d Can you try to revert [PATCH 4.1 157/159] inet: fix races with reqsk timers and see how that works for you? I'll do the same on my end. So far the only thing I ever could gleam was an rcu stall after cpuidle_enter(), but never anything regarding the timer - though it was definitely related to NIC activity after idle. cheers Holger -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
