Re: usbnet: driver_info->stop required to stop USB interrupts?

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On Tue, Mar 11, 2014 at 10:31 AM, Grant Grundler <grundler@xxxxxxxxxx> wrote:
...
> FWIW, I've reproduced this on "Samsung Chromebook" (Exynos 5250) with
> AX88772 USB dongle using the instructions I posted before (ie bouncing
> the USB port with reload_asix script).

Sorry - with AX88178 dongle - not AX88772
(5 machines on my desk right now).

grant

>
> cheers,
> grant
>
> [23231.533805] asix 3-1:1.0 eth0: link up, 1000Mbps, full-duplex, lpa 0xCDE1
> [23235.755652] usbcore: deregistering interface driver asix
> [23235.761722] asix 3-1:1.0 eth0: unregister 'asix'
> usb-12110000.usb-1, ASIX AX88178 USB 2.0 Ethernet
> [23235.761763] Unable to handle kernel paging request at virtual
> address e24cb004
> [23235.761771] pgd = ebf70000
> [23235.761777] [e24cb004] *pgd=6241141e(bad)
> [23235.761792] Internal error: Oops: 8000000d [#1] SMP ARM
> [23235.761798] Modules linked in: asix(-) exynos_gsc v4l2_mem2mem
> isl29018(C) sbs_battery i2c_dev uinput mwifiex_sdio mwifiex
> btmrvl_sdio btmrvl s5p_mfc videobuf2_dma_contig rtc_s3c bluetooth
> zram(C) zsmalloc(C) fuse cfg80211 nf_conntrack_ipv6 nf_defrag_ipv6
> ip6table_filter ip6_tables uvcvideo videobuf2_core videobuf2_vmalloc
> videobuf2_memops usbnet joydev [last unloaded: asix]
> [23235.761898] CPU: 0    Tainted: G         C    (3.8.11 #25)
> [23235.761906] PC is at 0xe24cb004
> [23235.761916] LR is at __wake_up_common+0x5c/0x88
> [23235.761924] pc : [<e24cb004>]    lr : [<c014f870>]    psr: 80000093
> [23235.761924] sp : ef0e3e10  ip : e24cb004  fp : ef0e3e3c
> [23235.761931] r10: e1a0c00d  r9 : 00000000  r8 : 00000003
> [23235.761938] r7 : 00000000  r6 : 00000001  r5 : e92d3ff4  r4 : eab13d14
> [23235.761943] r3 : 00000000  r2 : 00000000  r1 : 00000003  r0 : c060d0f4
> [23235.761951] Flags: Nzcv  IRQs off  FIQs on  Mode SVC_32  ISA ARM
> Segment kernel
> [23235.761957] Control: 10c5387d  Table: 6bf7006a  DAC: 00000015
> [23235.761964] Process ksoftirqd/0 (pid: 3, stack limit = 0xef0e2240)
> [23235.761970] Stack: (0xef0e3e10 to 0xef0e4000)
> [23235.761977] 3e00:                                     00000000
> eab13d04 40000013 00000001
> [23235.761986] 3e20: 00000003 00000000 00000100 3f6fdf7c ef0e3e6c
> ef0e3e40 c0151c30 c014f820
> [23235.761994] 3e40: 00000000 ef0e3e50 c052861c edaddd40 00000000
> edadde4c 00000000 00000000
> [23235.762001] 3e60: ef0e3e8c ef0e3e70 bf00a0e4 c0151bf4 bf009fa4
> edaddebc edaddec0 c084c790
> [23235.762009] 3e80: ef0e3eb4 ef0e3e90 c012bcb4 bf009fb0 c012bc1c
> ef0e2038 00000009 c090209c
> [23235.762016] 3ea0: 00000006 c09790c0 ef0e3f04 ef0e3eb8 c012b348
> c012bc28 c0934324 ef0e2000
> [23235.762024] 3ec0: 00000001 ef0e2020 00000000 00000000 04208040
> 00000005 c0153f94 00000000
> [23235.762032] 3ee0: c0934324 ef0e2000 00000001 ef0e2020 00000000
> 00000000 ef0e3f1c ef0e3f08
> [23235.762039] 3f00: c012b48c c012b234 c012b44c ef0409c0 ef0e3f44
> ef0e3f20 c014f22c c012b458
> [23235.762046] 3f20: ef0dde48 00000000 ef0409c0 c014f0c0 00000000
> 00000000 ef0e3fac ef0e3f48
> [23235.762054] 3f40: c01455b4 c014f0cc 00000001 00000000 ef0409c0
> 00000000 00030003 dead4ead
> [23235.762061] 3f60: ffffffff ffffffff ef0e3f68 ef0e3f68 00000000
> 00000000 dead4ead ffffffff
> [23235.762068] 3f80: ffffffff ef0e3f84 ef0e3f84 271ae517 ef0dde48
> c01454ec 00000000 00000000
> [23235.762075] 3fa0: 00000000 ef0e3fb0 c0106118 c01454f8 00000000
> 00000000 00000000 00000000
> [23235.762082] 3fc0: 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000 00000000
> [23235.762089] 3fe0: 00000000 00000000 00000000 00000000 00000013
> 00000000 f77e7f69 e1459824
> [23235.762094] Backtrace:
> [23235.762107] [<c014f870>] (__wake_up_common+0x5c/0x88) from
> [<c0151c30>] (__wake_up+0x48/0x5c)
> [23235.762121] [<c0151c30>] (__wake_up+0x48/0x5c) from [<bf00a0e4>]
> (usbnet_bh+0x140/0x210 [usbnet])
> [23235.762135] [<bf00a0e4>] (usbnet_bh+0x140/0x210 [usbnet]) from
> [<c012bcb4>] (tasklet_action+0x98/0xf4)
> [23235.762148] [<c012bcb4>] (tasklet_action+0x98/0xf4) from
> [<c012b348>] (__do_softirq+0x120/0x224)
> [23235.762160] [<c012b348>] (__do_softirq+0x120/0x224) from
> [<c012b48c>] (run_ksoftirqd+0x40/0x60)
> [23235.762170] [<c012b48c>] (run_ksoftirqd+0x40/0x60) from
> [<c014f22c>] (smpboot_thread_fn+0x16c/0x184)
> [23235.762180] [<c014f22c>] (smpboot_thread_fn+0x16c/0x184) from
> [<c01455b4>] (kthread+0xc8/0xd8)
> [23235.762191] [<c01455b4>] (kthread+0xc8/0xd8) from [<c0106118>]
> (ret_from_fork+0x14/0x20)
> [23235.762200] Code: 0000efe8 00003f15 0000eff0 00000000 (0000f004)
> [23235.762209] ---[ end trace 3ad68dc3731b37c5 ]---
> [23235.766529] Kernel panic - not syncing: Fatal exception in interrupt
> [23235.766539] CPU1: stopping
> [23235.766546] Backtrace:
> [23235.766564] [<c010d3d0>] (unwind_backtrace+0x0/0x118) from
> [<c060936c>] (dump_stack+0x28/0x30)
> [23235.766577] [<c060936c>] (dump_stack+0x28/0x30) from [<c010bcb8>]
> (handle_IPI+0xf0/0x170)
> [23235.766588] [<c010bcb8>] (handle_IPI+0xf0/0x170) from [<c0100430>]
> (gic_handle_irq+0x68/0x70)
> [23235.766598] [<c0100430>] (gic_handle_irq+0x68/0x70) from
> [<c0105c80>] (__irq_svc+0x40/0x50)
> [23235.766605] Exception stack(0xeab13cf0 to 0xeab13d38)
> [23235.766612] 3ce0:                                     00000002
> edaddec0 00000003 00000001
> [23235.766620] 3d00: edaddebc edaddec0 bfa78744 edaddee0 00200200
> 00000000 00000000 eab13d4c
> [23235.766627] 3d20: 00000000 eab13d38 c012af58 c012af74 20000013 ffffffff
> [23235.766639] [<c0105c80>] (__irq_svc+0x40/0x50) from [<c012af74>]
> (tasklet_kill+0x6c/0x8c)
> [23235.766653] [<c012af74>] (tasklet_kill+0x6c/0x8c) from [<bf00a950>]
> (usbnet_stop+0x110/0x178 [usbnet])
> [23235.766667] [<bf00a950>] (usbnet_stop+0x110/0x178 [usbnet]) from
> [<c0532298>] (__dev_close_many+0xa8/0xcc)
> [23235.766677] [<c0532298>] (__dev_close_many+0xa8/0xcc) from
> [<c05323c8>] (dev_close_many+0x98/0x118)
> [23235.766688] [<c05323c8>] (dev_close_many+0x98/0x118) from
> [<c0533fcc>] (rollback_registered_many+0xd4/0x204)
> [23235.766700] [<c0533fcc>] (rollback_registered_many+0xd4/0x204) from
> [<c05368f0>] (unregister_netdevice_queue+0x98/0xf4)
> [23235.766711] [<c05368f0>] (unregister_netdevice_queue+0x98/0xf4)
> from [<c0536974>] (unregister_netdev+0x28/0x30)
> [23235.766722] [<c0536974>] (unregister_netdev+0x28/0x30) from
> [<bf009610>] (usbnet_disconnect+0x8c/0xe4 [usbnet])
> [23235.766739] [<bf009610>] (usbnet_disconnect+0x8c/0xe4 [usbnet])
> from [<c0425328>] (usb_unbind_interface+0x70/0x170)
> [23235.766753] [<c0425328>] (usb_unbind_interface+0x70/0x170) from
> [<c03c727c>] (__device_release_driver+0xac/0xf8)
> [23235.766765] [<c03c727c>] (__device_release_driver+0xac/0xf8) from
> [<c03c78a4>] (driver_detach+0x94/0xbc)
> [23235.766775] [<c03c78a4>] (driver_detach+0x94/0xbc) from
> [<c03c6de4>] (bus_remove_driver+0x78/0xc4)
> [23235.766785] [<c03c6de4>] (bus_remove_driver+0x78/0xc4) from
> [<c03c7efc>] (driver_unregister+0x54/0x78)
> [23235.766796] [<c03c7efc>] (driver_unregister+0x54/0x78) from
> [<c0424780>] (usb_deregister+0x6c/0xd4)
> [23235.766807] [<c0424780>] (usb_deregister+0x6c/0xd4) from
> [<bfa7782c>] (cleanup_module+0x14/0x7e8 [asix])
> [23235.766827] [<bfa7782c>] (cleanup_module+0x14/0x7e8 [asix]) from
> [<c0177cb0>] (sys_delete_module+0x1c4/0x254)
> [23235.766838] [<c0177cb0>] (sys_delete_module+0x1c4/0x254) from
> [<c0106080>] (ret_fast_syscall+0x0/0x30)
> [23235.766846] task_migration_notifier = c0936790
> [23235.766855] page containing tmn: c0936770: 00000001 00000000
> dead4ead ffffffff
> [23235.766863] page containing tmn: c0936780: ffffffff c0936784
> c0936784 00000000
> [23235.766871] page containing tmn: c0936790: 00000000 dead4ead
> ffffffff ffffffff
> [23235.766878] page containing tmn: c09367a0: 20202020 00000000
> beab7861 c014f93c
> [23235.766886] page containing tmn: c09367b0: c014f918 00000000
> 00000000 00000000
> [23235.766892] page containing tmn: c09367c0: 00000000 00000000 00000000
> [23235.766907] CPU0 PC: <c011c830> exynos5_panic_notify+0x5c/0xb0
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