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SubjectRe: Frequent dwc3 crashes on suspend or reboot since 5.0-rc1
On Fri, Feb 1, 2019 at 4:46 PM Thinh Nguyen <thinh.nguyen@synopsys.com> wrote:
> John Stultz wrote:
> > On Fri, Feb 1, 2019 at 4:18 PM John Stultz <john.stultz@linaro.org> wrote:
> > Bisecting the changes down, it seems like its due to commit
> > fec9095bdef4e ("usb: dwc3: gadget: remove wait_end_transfer").
> >
> > It doesn't happen all the time, so I'll need to run some more testing,
> > but so far I've not been able to trigger it backing out the patches to
> > that point.
>
> Yeah, it sounds like the same issue. You can review the discussion here:
> https://www.spinics.net/lists/linux-usb/msg176110.html

Unfortunately, merging in
https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
testing/next seems to trigger a different issue:

[ 38.585141] OOM killer enabled.
[ 38.585143] Restarting tasks ...
[ 38.585874] ------------[ cut here ]------------
[ 38.585882] ep1out: request 0000000000000000 already in flight
[ 38.585944] WARNING: CPU: 7 PID: 2545 at
drivers/usb/dwc3/gadget.c:1430 dwc3_gadget_ep_queue+0x1d4/0x200
[ 38.585946] Modules linked in:
[ 38.585960] CPU: 7 PID: 2545 Comm: adbd Tainted: G S
5.0.0-rc4-00110-gad0e691 #509
[ 38.585963] Hardware name: HiKey960 (DT)
[ 38.585968] pstate: 80400085 (Nzcv daIf +PAN -UAO)
[ 38.585972] pc : dwc3_gadget_ep_queue+0x1d4/0x200
[ 38.585976] lr : dwc3_gadget_ep_queue+0x1d4/0x200
[ 38.585978] sp : ffffff80149fbb40
[ 38.585981] x29: ffffff80149fbb40 x28: ffffffc20c72a200
[ 38.585985] x27: ffffffc211376d00 x26: 0000000000000000
[ 38.585990] x25: ffffff80149fbc30 x24: 0000000000000018
[ 38.585994] x23: 0000000000000080 x22: ffffffc218c0a1b0
[ 38.585997] x21: ffffffffffffff94 x20: ffffffc21930f600
[ 38.586001] x19: ffffffc211376d00 x18: ffffff801161da88
[ 38.586005] x17: 0000000000000000 x16: 0000000000000000
[ 38.586008] x15: ffffff80117f8468 x14: 0000000000080000
[ 38.586012] x13: ffffff80117f8088 x12: ffffff80116436b8
[ 38.586016] x11: ffffff8011643000 x10: ffffff8011775000
[ 38.586020] x9 : 0000000000000000 x8 : ffffff801178b33c
[ 38.586023] x7 : 0000000000000000 x6 : 00000000007dd811
[ 38.586027] x5 : 0000000000000000 x4 : 0000000000000000
[ 38.586030] x3 : 0000000000000003 x2 : 0000000000000003
[ 38.586034] x1 : e8959d459c94b400 x0 : 0000000000000000
[ 38.586039] Call trace:
[ 38.586043] dwc3_gadget_ep_queue+0x1d4/0x200
[ 38.586053] usb_ep_queue+0x5c/0x120
[ 38.586059] ffs_epfile_io.isra.12+0x3dc/0x6c0
[ 38.586063] ffs_epfile_read_iter+0xbc/0x190
[ 38.586073] __vfs_read+0x10c/0x168
[ 38.586077] vfs_read+0x8c/0x148
[ 38.586081] ksys_read+0x5c/0xc8
[ 38.586085] __arm64_sys_read+0x14/0x20
[ 38.586094] el0_svc_common+0xb4/0x118
[ 38.586099] el0_svc_handler+0x2c/0x80
[ 38.586105] el0_svc+0x8/0xc
[ 38.586107] ---[ end trace 65a9814dc2b21238 ]---
[ 38.587826] done.
[ 38.587922] PM: suspend exit
[ 38.589426] ------------[ cut here ]------------
[ 38.589433] ep1out: request 0000000000000000 already in flight
[ 38.589489] WARNING: CPU: 7 PID: 4087 at
drivers/usb/dwc3/gadget.c:1430 dwc3_gadget_ep_queue+0x1d4/0x200
[ 38.589493] Modules linked in:
[ 38.589506] CPU: 7 PID: 4087 Comm: adbd Tainted: G S W
5.0.0-rc4-00110-gad0e691 #509
[ 38.589508] Hardware name: HiKey960 (DT)
[ 38.589514] pstate: 80400085 (Nzcv daIf +PAN -UAO)
[ 38.589518] pc : dwc3_gadget_ep_queue+0x1d4/0x200
[ 38.589521] lr : dwc3_gadget_ep_queue+0x1d4/0x200
[ 38.589523] sp : ffffff80149fbb40
[ 38.589526] x29: ffffff80149fbb40 x28: ffffffc20c72a200
[ 38.589531] x27: ffffffc211376d00 x26: 0000000000000000
[ 38.589535] x25: ffffff80149fbc30 x24: 0000000000000018
[ 38.589539] x23: 0000000000000080 x22: ffffffc218c0a1b0
[ 38.589543] x21: ffffffffffffff94 x20: ffffffc21930f600
[ 38.589546] x19: ffffffc211376d00 x18: ffffff801161da88
[ 38.589550] x17: 0000000000000000 x16: 0000000000000000
[ 38.589554] x15: ffffff80117f8468 x14: 0000000000080000
[ 38.589557] x13: ffffff80117f8088 x12: ffffff80116436b8
[ 38.589561] x11: ffffff8011643000 x10: ffffff8011775000
[ 38.589565] x9 : 0000000000000000 x8 : ffffff801178bb88
[ 38.589568] x7 : 0000000000000000 x6 : 00000000007dd811
[ 38.589572] x5 : 0000000000000000 x4 : 0000000000000000
[ 38.589576] x3 : 0000000000000003 x2 : 0000000000000003
[ 38.589579] x1 : e8959d459c94b400 x0 : 0000000000000000
[ 38.589584] Call trace:
[ 38.589588] dwc3_gadget_ep_queue+0x1d4/0x200
[ 38.589597] usb_ep_queue+0x5c/0x120
[ 38.589603] ffs_epfile_io.isra.12+0x3dc/0x6c0
[ 38.589606] ffs_epfile_read_iter+0xbc/0x190
[ 38.589617] __vfs_read+0x10c/0x168
[ 38.589621] vfs_read+0x8c/0x148
[ 38.589625] ksys_read+0x5c/0xc8
[ 38.589630] __arm64_sys_read+0x14/0x20
[ 38.589638] el0_svc_common+0xb4/0x118
[ 38.589642] el0_svc_handler+0x2c/0x80
[ 38.589648] el0_svc+0x8/0xc
[ 38.589651] ---[ end trace 65a9814dc2b21239 ]---

Let me know if you have other ideas to try!

thanks
-john

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