On Tue 2016-05-17 11:41:04, David Daney wrote: > From: David Daney <david.daney@xxxxxxxxxx> > > We are getting somewhat random soft lockups with this signature: > > [ 86.992215] [<fffffc00080935e0>] el1_irq+0xa0/0x10c > [ 86.997082] [<fffffc000841822c>] cursor_timer_handler+0x30/0x54 > [ 87.002991] [<fffffc000810ec44>] call_timer_fn+0x54/0x1a8 > [ 87.008378] [<fffffc000810ef88>] run_timer_softirq+0x1c4/0x2bc > [ 87.014200] [<fffffc000809077c>] __do_softirq+0x114/0x344 > [ 87.019590] [<fffffc00080af45c>] irq_exit+0x74/0x98 > [ 87.024458] [<fffffc00080fac20>] __handle_domain_irq+0x98/0xfc > [ 87.030278] [<fffffc000809056c>] gic_handle_irq+0x94/0x190 > > This is caused by the vt visual_init() function calling into > fbcon_init() with a vc_cur_blink_ms value of zero. This is a > transient condition, as it is later set to a non-zero value. But, if > the timer happens to expire while the blink rate is zero, it goes into > an endless loop, and we get soft lockup. > > The fix is to initialize vc_cur_blink_ms before calling the con_init() > function. > > Signed-off-by: David Daney <david.daney@xxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx Acked-by: Pavel Machek <pavel@xxxxxx> (And it is amazing how many problems configurable blink speed caused). Thanks! Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
