<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [HSW] resume from s4 sporadically causes call trace and system hang, with warm boot" href="https://bugs.freedesktop.org/show_bug.cgi?id=65496#c30">Comment # 30</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [HSW] resume from s4 sporadically causes call trace and system hang, with warm boot" href="https://bugs.freedesktop.org/show_bug.cgi?id=65496">bug 65496</a> from <a class="email" href="mailto:przanoni@gmail.com" title="Paulo Zanoni <przanoni@gmail.com>"> Paulo Zanoni</a> <pre>(In reply to <a href="show_bug.cgi?id=65496#c29">comment #29</a>) > I've been doing some investigation and although I see backtraces mostly for > file-system operations, they always seem to happen when we're doing > gmbus/dp-aux. I also get "general protection fault: 0000" messages. > > These errors don't crash my machine. I spent even more time debugging this today, and again: most of the error messages I see come when we're doing gmbus/dp-aux. Example: [ 206.436517] [drm:gmbus_xfer], GMBUS [i915 gmbus dpb] NAK for addr: 0050 r(1) [ 206.496851] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter i915 gmbus dpb [ 206.529782] ------------[ cut here ]------------ [ 206.529787] WARNING: CPU: 3 PID: 24 at lib/list_debug.c:59 __list_del_entry+0xa1/0xd0() [ 206.529788] list_del corruption. prev->next should be ffff880142da7010, but was 00d5000000d40000 [ 206.529796] Modules linked in: parport_pc bnep ppdev rfcomm bluetooth lp parport ext2 dm_crypt e1000e ptp i915 i2c_ algo_bit drm_kms_helper pps_core drm video [ 206.529798] CPU: 3 PID: 24 Comm: ksoftirqd/3 Not tainted 3.11.0-rc7.1309041757+ #2159 [ 206.529799] Hardware name: Intel Corporation Shark Bay Client platform/WhiteTip Mountain 1, BIOS HSWLPTU1.86C.0124. R02.1305030131 05/03/2013 [ 206.529801] 0000000000000009 ffff880147001bc0 ffffffff816195dd ffff880147001c08 [ 206.529803] ffff880147001bf8 ffffffff81041c92 ffff880142da6fd0 0000000000000286 [ 206.529804] ffffea0004db7200 ffffffff811699e6 0000000000000000 ffff880147001c58 [ 206.529805] Call Trace: [ 206.529807] [<ffffffff816195dd>] dump_stack+0x54/0x74 [ 206.529810] [<ffffffff81041c92>] warn_slowpath_common+0x82/0xb0 [ 206.529812] [<ffffffff811699e6>] ? __d_free+0x46/0x70 [ 206.529814] [<ffffffff81041d77>] warn_slowpath_fmt+0x47/0x50 [ 206.529815] [<ffffffff811699e6>] ? __d_free+0x46/0x70 [ 206.529817] [<ffffffff812b7801>] __list_del_entry+0xa1/0xd0 [ 206.529819] [<ffffffff8114eb82>] __delete_object+0x32/0xb0 [ 206.529821] [<ffffffff8114f46c>] delete_object_full+0x1c/0x30 [ 206.529824] [<ffffffff8160c4c1>] kmemleak_free+0x21/0x50 [ 206.529827] [<ffffffff81141190>] kmem_cache_free+0x140/0x1a0 [ 206.529828] [<ffffffff811699e6>] __d_free+0x46/0x70 [ 206.529831] [<ffffffff810e1b8a>] rcu_process_callbacks+0x1ea/0x5a0 [ 206.529834] [<ffffffff8104727a>] __do_softirq+0xda/0x1b0 [ 206.529836] [<ffffffff8104737d>] run_ksoftirqd+0x2d/0x60 [ 206.529839] [<ffffffff81070ff6>] smpboot_thread_fn+0x156/0x1f0 [ 206.529840] [<ffffffff81070ea0>] ? lg_global_unlock+0xb0/0xb0 [ 206.529843] [<ffffffff810687d5>] kthread+0xe5/0xf0 [ 206.529845] [<ffffffff810686f0>] ? kthread_create_on_node+0x140/0x140 [ 206.529847] [<ffffffff8162936c>] ret_from_fork+0x7c/0xb0 [ 206.529849] [<ffffffff810686f0>] ? kthread_create_on_node+0x140/0x140 [ 206.529850] ---[ end trace 86de9cb15e206270 ]--- [ 208.249590] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:20:HDMI-A-1] disconnected [ 208.323782] [drm:drm_mode_getconnector], [CONNECTOR:22:?] [ 208.369864] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:22:DP-2]</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>