Hello,
I am using a Beaglebone black board wuth ubuntu 12.04
(3.8.13-kernel). My board is working very good with eMMC as well as with
with SD card. Problem is when I hotplug a USB mass storage device(pendrive)
whole system getting hang. Then if I powered off and again powered ON with
pendrive then its working properly and pendrive is also detecting. Problem
is only during hotplug.
Also I tried to debug through the serial debug port but I am newbie so I
didn't get the issue. Serial debug port output is as follows.
ubuntu-armhf login: tilcdc 4830e000.fb: timeout waiting for framedone
usb 1-1.4: new high-speed USB device number 5 using musb-hdrc
usb 1-1.4: New USB device found, idVendor=0781, idProduct=5567
usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1.4: Product: Firebird USB Flash Drive
usb 1-1.4: Manufacturer: SanDisk
usb 1-1.4: SerialNumber: 4C532000060711111374
scsi0 : usb-storage 1-1.4:1.0
scsi 0:0:0:0: Direct-Access SanDisk Cruzer Blade 1.26 PQ: 0 ANSI: 5
sd 0:0:0:0: [sda] 7821312 512-byte logical blocks: (4.00 GB/3.72 GiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't
support DPO or FUA
*BUG: spinlock bad magic on CPU#0, kworker/u:2/62*
lock: 0xdf4cfee8, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
[<c0014660>] (unwind_backtrace+0x0/0xe0) from [<c02420e8>]
(do_raw_spin_lock+0x20/0x164)
[<c02420e8>] (do_raw_spin_lock+0x20/0x164) from [<c02c1278>]
(get_device_parent+0x84/0x18c)
[<c02c1278>] (get_device_parent+0x84/0x18c) from [<c02c1904>]
(device_add+0xcc/0x580)
[<c02c1904>] (device_add+0xcc/0x580) from [<c0226358>]
(add_disk+0x1a8/0x40c)
[<c0226358>] (add_disk+0x1a8/0x40c) from [<c02efaf8>]
(sd_probe_async+0xec/0x1a8)
[<c02efaf8>] (sd_probe_async+0xec/0x1a8) from [<c005f87c>]
(async_run_entry_fn+0xe8/0x204)
[<c005f87c>] (async_run_entry_fn+0xe8/0x204) from [<c0054b70>]
(process_one_work+0x240/0x3fc)
[<c0054b70>] (process_one_work+0x240/0x3fc) from [<c005514c>]
(worker_thread+0x258/0x370)
[<c005514c>] (worker_thread+0x258/0x370) from [<c0058d70>]
(kthread+0xa0/0xb0)
[<c0058d70>] (kthread+0xa0/0xb0) from [<c000d918>] (ret_from_fork+0x14/0x3c)
*Unable to handle kernel NULL pointer dereference at virtual address
00000008*
pgd = c0004000
[00000008] *pgd=00000000
Internal error: Oops: 5 [#1] SMP ARM
Modules linked in: binfmt_misc unix
CPU: 0 Tainted: G W (3.8.13-bone26 #272)
PC is at get_device_parent+0x94/0x18c
LR is at spin_bug+0x10/0x28
pc : [<c02c1288>] lr : [<c04821a8>] psr: 00000013
sp : df3d3df8 ip : c000d918 fp : c08122dc
r10: ddca98c8 r9 : c07d2408 r8 : df3d40b0
r7 : df51080c r6 : ddca98d0 r5 : df510868 r4 : df510868
r3 : df4cfee0 r2 : 00000000 r1 : 00000000 r0 : fffffffc
Flags: nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: 10c5387d Table: 9f5f4019 DAC: 00000015
Process kworker/u:2 (pid: 62, stack limit = 0xdf3d2240)
Stack: (0xdf3d3df8 to 0xdf3d4000)
3de0: ddc526c0
df510868
3e00: 00000000 df510870 df51080c c02c1904 df510870 00000000 00000000
c02358ac
3e20: ddca98c8 df510800 dd8e0e40 df510800 dd8e0e40 df510868 df51080c
df3d40b0
3e40: c07d2408 ddb04600 c08122dc c0226358 c0225360 df510800 df000000
00800000
3e60: 00000000 00000004 c0c76e80 df4e1c00 df510800 df4e1c00 df510800
ddca9800
3e80: 00000000 ddb04608 ddb04600 c02efaf8 df4e1c00 c02efa0c 00000002
df39dbc0
3ea0: ddb04608 c0812200 df03f800 c005f87c c07d0da8 c07d0da8 c0812200
df3a9600
3ec0: c0812318 00000001 df39dbc0 ddb04608 c0812200 df03f800 c0812318
00000000
3ee0: 00000000 c0054b70 df061e8c 00000001 00000000 00000003 00000001
df39dbc0
3f00: c0812318 df3d2000 c07ec6b8 c0812200 c0812318 df39dbd4 00000089
c005514c
3f20: df39dbc0 df3d3f54 df3d3f38 df061e74 00000000 df39dbc0 c0054ef4
00000000
3f40: 00000000 00000000 00000000 c0058d70 942dff37 00000000 f93fdf65
df39dbc0
3f60: 00000000 00000000 dead4ead ffffffff ffffffff df3d3f74 df3d3f74
00000000
3f80: 00000000 dead4ead ffffffff ffffffff df3d3f90 df3d3f90 df3d3fac
df061e74
3fa0: c0058cd0 00000000 00000000 c000d918 00000000 00000000 00000000
00000000
3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
3fe0: 00000000 00000000 00000000 00000000 00000013 00000000 90fc7cef
3cd6dee1
[<c02c1288>] (get_device_parent+0x94/0x18c) from [<c02c1904>]
(device_add+0xcc/0x580)
[<c02c1904>] (device_add+0xcc/0x580) from [<c0226358>]
(add_disk+0x1a8/0x40c)
[<c0226358>] (add_disk+0x1a8/0x40c) from [<c02efaf8>]
(sd_probe_async+0xec/0x1a8)
[<c02efaf8>] (sd_probe_async+0xec/0x1a8) from [<c005f87c>]
(async_run_entry_fn+0xe8/0x204)
[<c005f87c>] (async_run_entry_fn+0xe8/0x204) from [<c0054b70>]
(process_one_work+0x240/0x3fc)
[<c0054b70>] (process_one_work+0x240/0x3fc) from [<c005514c>]
(worker_thread+0x258/0x370)
[<c005514c>] (worker_thread+0x258/0x370) from [<c0058d70>]
(kthread+0xa0/0xb0)
[<c0058d70>] (kthread+0xa0/0xb0) from [<c000d918>] (ret_from_fork+0x14/0x3c)
Code: e5953198 e593303c e5b300e0 ea000006 (e590200c)
---[ end trace 6528e0e98df06b3f ]---
*Unable to handle kernel paging request at virtual address ffffffe0*
pgd = c0004000
[ffffffe0] *pgd=9fefe821, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#2] SMP ARM
Modules linked in: binfmt_misc unix
CPU: 0 Tainted: G D W (3.8.13-bone26 #272)
PC is at kthread_data+0x4/0xc
LR is at wq_worker_sleeping+0xc/0x9c
pc : [<c005918c>] lr : [<c00552ec>] psr: 00000093
sp : df3d3b20 ip : 00000000 fp : df3d3bcc
r10: df1777a4 r9 : 00000000 r8 : df177820
r7 : c077ae80 r6 : 00000000 r5 : c0c76e80 r4 : df177580
r3 : 00000000 r2 : 00000007 r1 : 00000000 r0 : df177580
Flags: nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c5387d Table: 9f754019 DAC: 00000015
Process kworker/u:2 (pid: 62, stack limit = 0xdf3d2240)
Stack: (0xdf3d3b20 to 0xdf3d4000)
3b20: df177580 c0c76e80 df3d2000 c0484ab4 00000000 c07ceb44 c07ceb30
00000004
3b40: df3d3b7c 60000093 df3b9fc4 c029f8f8 c0040508 c077ae80 00000000
0e230e22
3b60: df049cc0 60000093 c077e100 047e047d 800000c2 60000093 00000000
df049cc0
3b80: df3b9fc4 00050004 df177580 00000000 00000000 60000013 df3b48bc
00020001
3ba0: 00000000 60000013 df3b48bc df177580 00000001 df3d39ac 00000000
00000001
3bc0: df177578 df1777a4 df1777a4 c0040508 c05e69f3 df1777ec 000e000e
df3d3bd8
3be0: 8df06b3f 0000000b df3d3c52 c02c1288 00000000 00000001 c05e69fb
00000000
3c00: c05e69f3 c0011dfc df3d2240 0000000b c02c1288 00000000 00000008
60000113
3c20: 65fe6f02 33353935 20383931 33393565 63333033 62356520 65303033
61652030
3c40: 30303030 28203630 30393565 63303032 c0002029 c047fdd4 c0625dbc
00000008
3c60: 00000005 00000000 df3d3db0 00000000 00000028 00000005 c08122dc
c047f60c
3c80: df177580 c0487964 df009310 df3d2000 00000000 00000053 00000000
00000000
3ca0: 00000053 c07ef1f4 00000000 c00429e0 00000053 c000e7c0 00000043
fa200000
3cc0: df3d3ce0 c0008760 c003d084 c003d0a0 60000013 ffffffff df3d3d14
c04861c0
3ce0: c07b6d14 60000013 c07b6d0c 00000005 c0788f84 00000008 df3d3db0
df3d40b0
3d00: c07d2408 ddca98c8 c08122dc c0008530 000008d0 df3d3d28 c003d084
c003d0a0
3d20: 60000013 ffffffff 00000000 00000000 c06a6f78 c000d918 df3d3db8
c00142b0
3d40: 60000013 df39dbc0 60000013 00000000 ddc526c0 c0058d70 df3d3fac
ddca98d0
3d60: df51080c df4cfee8 c07d2408 ddca98c8 00000000 c047fdd4 df3d3fb0
c000d918
3d80: 00000000 df3d3d94 c0058d70 c0011a3c c05e69b2 c000d918 df510868
c02c1288
3da0: 00000013 ffffffff df3d3de4 c0486158 fffffffc 00000000 00000000
df4cfee0
3dc0: df510868 df510868 ddca98d0 df51080c df3d40b0 c07d2408 ddca98c8
c08122dc
3de0: c000d918 df3d3df8 c04821a8 c02c1288 00000013 ffffffff ddc526c0
df510868
3e00: 00000000 df510870 df51080c c02c1904 df510870 00000000 00000000
c02358ac
3e20: ddca98c8 df510800 dd8e0e40 df510800 dd8e0e40 df510868 df51080c
df3d40b0
3e40: c07d2408 ddb04600 c08122dc c0226358 c0225360 df510800 df000000
00800000
3e60: 00000000 00000004 c0c76e80 df4e1c00 df510800 df4e1c00 df510800
ddca9800
3e80: 00000000 ddb04608 ddb04600 c02efaf8 df4e1c00 c02efa0c 00000002
df39dbc0
3ea0: ddb04608 c0812200 df03f800 c005f87c c07d0da8 c07d0da8 c0812200
df3a9600
3ec0: c0812318 00000001 df39dbc0 ddb04608 c0812200 df03f800 c0812318
00000000
3ee0: 00000000 c0054b70 df061e8c 00000001 00000000 00000003 00000001
df39dbc0
3f00: c0812318 df3d2000 c07ec6b8 c0812200 c0812318 df39dbd4 00000089
c005514c
3f20: df39dbc0 df3d3f54 df3d3f38 df061e74 00000000 df39dbc0 c0054ef4
00000000
3f40: 00000000 00000000 00000000 c0058d70 942dff37 00000000 f93fdf65
df39dbc0
3f60: 00000000 00000000 dead4ead ffffffff ffffffff df3d3f74 df3d3f74
00000001
3f80: 00010001 dead4ead ffffffff ffffffff df3d3f90 df3d3f90 df3d3fac
df061e74
3fa0: c0058cd0 00000000 00000000 c000d918 00000000 00000000 00000000
00000000
3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
3fe0: 00000000 00000000 00000000 00000000 00000013 00000000 90fc7cef
3cd6dee1
[<c005918c>] (kthread_data+0x4/0xc) from [<c00552ec>]
(wq_worker_sleeping+0xc/0x9c)
[<c00552ec>] (wq_worker_sleeping+0xc/0x9c) from [<c0484ab4>]
(__schedule+0x104/0x6fc)
[<c0484ab4>] (__schedule+0x104/0x6fc) from [<c0040508>]
(do_exit+0x820/0x874)
[<c0040508>] (do_exit+0x820/0x874) from [<c0011dfc>] (die+0x35c/0x3d4)
[<c0011dfc>] (die+0x35c/0x3d4) from [<c047f60c>]
(__do_kernel_fault.part.8+0x54/0x74)
[<c047f60c>] (__do_kernel_fault.part.8+0x54/0x74) from [<c0487964>]
(do_page_fault+0x34c/0x39c)
[<c0487964>] (do_page_fault+0x34c/0x39c) from [<c0008530>]
(do_DataAbort+0x34/0x98)
[<c0008530>] (do_DataAbort+0x34/0x98) from [<c0486158>]
(__dabt_svc+0x38/0x60)
Exception stack(0xdf3d3db0 to 0xdf3d3df8)
3da0: fffffffc 00000000 00000000
df4cfee0
3dc0: df510868 df510868 ddca98d0 df51080c df3d40b0 c07d2408 ddca98c8
c08122dc
3de0: c000d918 df3d3df8 c04821a8 c02c1288 00000013 ffffffff
[<c0486158>] (__dabt_svc+0x38/0x60) from [<c02c1288>]
(get_device_parent+0x94/0x18c)
[<c02c1288>] (get_device_parent+0x94/0x18c) from [<c02c1904>]
(device_add+0xcc/0x580)
[<c02c1904>] (device_add+0xcc/0x580) from [<c0226358>]
(add_disk+0x1a8/0x40c)
[<c0226358>] (add_disk+0x1a8/0x40c) from [<c02efaf8>]
(sd_probe_async+0xec/0x1a8)
[<c02efaf8>] (sd_probe_async+0xec/0x1a8) from [<c005f87c>]
(async_run_entry_fn+0xe8/0x204)
[<c005f87c>] (async_run_entry_fn+0xe8/0x204) from [<c0054b70>]
(process_one_work+0x240/0x3fc)
[<c0054b70>] (process_one_work+0x240/0x3fc) from [<c005514c>]
(worker_thread+0x258/0x370)
[<c005514c>] (worker_thread+0x258/0x370) from [<c0058d70>]
(kthread+0xa0/0xb0)
[<c0058d70>] (kthread+0xa0/0xb0) from [<c000d918>] (ret_from_fork+0x14/0x3c)
Code: e5130028 e7e00150 e12fff1e e5903274 (e5130020)
---[ end trace 6528e0e98df06b40 ]---
Fixing recursive fault but reboot is needed!
BUG: spinlock lockup suspected on CPU#0, kworker/u:2/62
lock: 0xc0c76e80, .magic: dead4ead, .owner: kworker/u:2/62, .owner_cpu: 0
[<c0014660>] (unwind_backtrace+0x0/0xe0) from [<c024217c>]
(do_raw_spin_lock+0xb4/0x164)
[<c024217c>] (do_raw_spin_lock+0xb4/0x164) from [<c0484a5c>]
(__schedule+0xac/0x6fc)
[<c0484a5c>] (__schedule+0xac/0x6fc) from [<c003fdd4>] (do_exit+0xec/0x874)
[<c003fdd4>] (do_exit+0xec/0x874) from [<c0011dfc>] (die+0x35c/0x3d4)
[<c0011dfc>] (die+0x35c/0x3d4) from [<c047f60c>]
(__do_kernel_fault.part.8+0x54/0x74)
[<c047f60c>] (__do_kernel_fault.part.8+0x54/0x74) from [<c0487964>]
(do_page_fault+0x34c/0x39c)
[<c0487964>] (do_page_fault+0x34c/0x39c) from [<c0008530>]
(do_DataAbort+0x34/0x98)
[<c0008530>] (do_DataAbort+0x34/0x98) from [<c0486158>]
(__dabt_svc+0x38/0x60)
Exception stack(0xdf3d3ad8 to 0xdf3d3b20)
3ac0: df177580
00000000
3ae0: 00000007 00000000 df177580 c0c76e80 00000000 c077ae80 df177820
00000000
3b00: df1777a4 df3d3bcc 00000000 df3d3b20 c00552ec c005918c 00000093
ffffffff
[<c0486158>] (__dabt_svc+0x38/0x60) from [<c005918c>] (kthread_data+0x4/0xc)
[<c005918c>] (kthread_data+0x4/0xc) from [<c00552ec>]
(wq_worker_sleeping+0xc/0x9c)
[<c00552ec>] (wq_worker_sleeping+0xc/0x9c) from [<c0484ab4>]
(__schedule+0x104/0x6fc)
[<c0484ab4>] (__schedule+0x104/0x6fc) from [<c0040508>]
(do_exit+0x820/0x874)
[<c0040508>] (do_exit+0x820/0x874) from [<c0011dfc>] (die+0x35c/0x3d4)
[<c0011dfc>] (die+0x35c/0x3d4) from [<c047f60c>]
(__do_kernel_fault.part.8+0x54/0x74)
[<c047f60c>] (__do_kernel_fault.part.8+0x54/0x74) from [<c0487964>]
(do_page_fault+0x34c/0x39c)
[<c0487964>] (do_page_fault+0x34c/0x39c) from [<c0008530>]
(do_DataAbort+0x34/0x98)
[<c0008530>] (do_DataAbort+0x34/0x98) from [<c0486158>]
(__dabt_svc+0x38/0x60)
Exception stack(0xdf3d3db0 to 0xdf3d3df8)
3da0: fffffffc 00000000 00000000
df4cfee0
3dc0: df510868 df510868 ddca98d0 df51080c df3d40b0 c07d2408 ddca98c8
c08122dc
3de0: c000d918 df3d3df8 c04821a8 c02c1288 00000013 ffffffff
[<c0486158>] (__dabt_svc+0x38/0x60) from [<c02c1288>]
(get_device_parent+0x94/0x18c)
[<c02c1288>] (get_device_parent+0x94/0x18c) from [<c02c1904>]
(device_add+0xcc/0x580)
[<c02c1904>] (device_add+0xcc/0x580) from [<c0226358>]
(add_disk+0x1a8/0x40c)
[<c0226358>] (add_disk+0x1a8/0x40c) from [<c02efaf8>]
(sd_probe_async+0xec/0x1a8)
[<c02efaf8>] (sd_probe_async+0xec/0x1a8) from [<c005f87c>]
(async_run_entry_fn+0xe8/0x204)
[<c005f87c>] (async_run_entry_fn+0xe8/0x204) from [<c0054b70>]
(process_one_work+0x240/0x3fc)
[<c0054b70>] (process_one_work+0x240/0x3fc) from [<c005514c>]
(worker_thread+0x258/0x370)
[<c005514c>] (worker_thread+0x258/0x370) from [<c0058d70>]
(kthread+0xa0/0xb0)
[<c0058d70>] (kthread+0xa0/0xb0) from [<c000d918>] (ret_from_fork+0x14/0x3c)
Please help to solve this problem.
Thanking you.
Regards,
Kishor
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