Re: Crash when resuming system (related to USB?) with 4.4

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On Fri, Mar 18, 2016 at 10:36:07AM +0100, Frederik Himpe wrote:
> Half of the time when resuming my system, it completely hangs. I managed to find this trace in pstore:
> 
> 
> ==./dmesg-efi-145829002001001==
> Oops#1 Part1
> <4>[20505.738344]  [<ffffffffa0086e8d>] ? hub_event+0x75d/0x14f0 [usbcore]
> <4>[20505.738413]  [<ffffffff8108ed67>] ? process_one_work+0x157/0x410
> <4>[20505.738474]  [<ffffffff8108f06d>] ? worker_thread+0x4d/0x450
> <4>[20505.738555]  [<ffffffff8108f020>] ? process_one_work+0x410/0x410
> <4>[20505.738617]  [<ffffffff81094dfd>] ? kthread+0xcd/0xf0
> <4>[20505.738691]  [<ffffffff81094d30>] ? kthread_create_on_node+0x190/0x190
> <4>[20505.738784]  [<ffffffff8158ed8f>] ? ret_from_fork+0x3f/0x70
> <4>[20505.738843]  [<ffffffff81094d30>] ? kthread_create_on_node+0x190/0x190
> <4>[20505.738932] Code: 89 c2 48 0f 42 15 80 3c 85 00 48 01 ca 48 c1 ea 0c 48 c1 e2 06 48 01 fa 48 8b 72 20 4c 8d 46 ff 83 e6 01 49 0f 45 d0 4c 8b 6a 30 <4d> 8b 65 00 65 4c 03 25 23 ce e4 7e 83 3d a0 56 94 00 01 7e 2e 
> <1>[20505.739337] RIP  [<ffffffff811bd3b1>] kfree+0x91/0x250
> <4>[20505.739402]  RSP <ffff8801225cfc98>
> <4>[20505.739438] CR2: 0000000000000000
> <4>[20505.756194] ---[ end trace 34cacb43f9f2617d ]---
> ==./dmesg-efi-145829002002001==
> Oops#1 Part2
> <4>[20505.737432] R13: 0000000000000000 R14: 0000000000000001 R15: ffff8800b7121218
> <4>[20505.737501] FS:  0000000000000000(0000) GS:ffff88023ea00000(0000) knlGS:0000000000000000
> <4>[20505.737588] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> <4>[20505.737656] CR2: 0000000000000000 CR3: 00000000b481b000 CR4: 00000000001406f0
> <4>[20505.737726] Stack:
> <4>[20505.737752]  0000000000000001 ffff88023220f9a0 ffff880231ec4000 000000001bdb7108
> <4>[20505.737836]  ffff880231ec4000 ffff880231ec4000 ffff8800368a2000 ffff880231ec40a0
> <4>[20505.737913]  0000000000000001 ffffffffa00935ad ffff880231ec4090 ffffffffa0080347
> <4>[20505.737994] Call Trace:
> <4>[20505.738048]  [<ffffffffa00935ad>] ? usb_release_bos_descriptor+0x1d/0x40 [usbcore]
> <4>[20505.738134]  [<ffffffffa0080347>] ? usb_release_dev+0x27/0x60 [usbcore]
> <4>[20505.738206]  [<ffffffff8140bf1d>] ? device_release+0x2d/0x90
> <4>[20505.738270]  [<ffffffff812ecab5>] ? kobject_release+0x75/0x1a0


This looks worrysome, there was a patch sent to the linux-usb mailing
list with the subject:
	[PATCH] usb: hub: fix panic caused by NULL bos pointer during reset device

can you see if it solves this issue for you or not?

thanks,

greg k-h
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