Hi All,
I have been implementing a MTP/PTP class that runs over gadgetfs
interface and my usb gadget driver for the TI DM320 processor. So far
all is well. I am able to detect the board as a MTP device, I am able to
list the files, delete files using MTP etc. However, when i try to sync
a playlist with my board, i see that i get a slab corruption kernel
crash(See below). Any ideas on what i may be doing wrong?
warm regards,
Vishal
**************************************************************************
Unable to handle kernel paging request at virtual address 6c756f42
pgd = c0cc8000
[6c756f42] *pgd=00000000
Internal error: Oops: 0 [#1]
Modules linked in: gadgetfs dm320_function
CPU: 0
PC is at 0x6c756f42
LR is at __wake_up_common+0x50/0x7c
pc : [<6c756f42>] lr : [<c0030984>] Not tainted
sp : c0017bac ip : c02c7a74 fp : c0017bd4
r10: 00000003 r9 : 00000000 r8 : 00000000
r7 : 00000000 r6 : c0017efc r5 : 00000000 r4 : 00000001
r3 : 00000000 r2 : 00000000 r1 : 00000003 r0 : c02c7a74
Flags: nzCv IRQs off FIQs on Mode SVC_32 (T) Segment user
Control: 5317F Table: 015C8000 DAC: 00000015
Process mtpd (pid: 662, stack limit = 0xc0016194)
Stack: (0xc0017bac to 0xc0018000)
7ba0: c0017efc 60000093 00000000 c0710478
00000f00
7bc0: c0016000 00000200 c0017bf0 c0017bd8 c0030b20 c0030944 00000000
c0c09a3c
7be0: c0710608 c0017c00 c0017bf4 bf00515c c0030ae0 c0017c1c c0017c04
bf000400
7c00: bf005138 c0c09a3c c0710608 c0b20000 c0017c38 c0017c20 bf00058c
bf000390
7c20: c0c09a3c c0c09a64 c071062c c0017c68 c0017c3c bf0012f8 bf00051c
c0017ce0
7c40: c0212590 c0d7a278 00000000 00000000 0000000f c0017ce0 c020c0b8
c0017c8c
7c60: c0017c6c c001f02c bf000e14 c020c3c4 0000000f c0d7a278 c0017ce0
c0017ce0
7c80: c0017cac c0017c90 c001f1a4 c001efd4 0000000f c020c3c4 00000000
00010105
7ca0: c0017cdc c0017cb0 c001f338 c001f0fc 00000000 00000000 ffffffff
c0017d14
7cc0: 00000000 00010105 00010104 c020c0b8 c0017d48 c0017ce0 c001def8
c001f2f4
7ce0: 00000001 c0016000 00000005 40000013 c0d4dda4 0000000c 00000000
0000000c
7d00: c0017d9c c0016000 c020c0b8 c0017d48 c0017d28 c0017d28 c001effc
c001f014
7d20: 40000013 ffffffff c020c328 0000000c c0d4dda4 c0017d9c c0017d9c
c0017d68
7d40: c0017d4c c001f1a4 c001efd4 0000000c c020c328 0000000a 00000104
c0017d98
7d60: c0017d6c c001f338 c001f0fc c020c0b8 c0017d98 ffffffff c0017dd0
0000000a
7d80: 00000104 00000103 c020c0b8 c0017e00 c0017d9c c001def8 c001f2f4
00000000
7da0: 00000103 c0016000 20000013 00000002 c020c0b8 0000000a c0212340
c0017e44
7dc0: c0016000 c020c0b8 c0017e00 c0017de4 c0017de4 c00398d8 c00398f0
20000013
7de0: ffffffff 00000000 c020c0b8 00000000 00000002 c0017e10 c0017e04
c0039aa8
7e00: c00398bc c0017e40 c0017e14 c001f424 c0039a74 c002f804 60000093
ffffffff
7e20: c0017e78 00000000 00000002 00000001 8d9162e4 c0017eac c0017e44
c001def8
7e40: c001f2f4 00000000 c0016000 00000002 00000002 00000000 c02c7a80
00000000
7e60: 20000013 c0017eb0 c0017fb0 8d9162e4 c0017eac c0017e18 c0017e8c
c00300bc
7e80: c003ff24 40000013 ffffffff ffffffec c02c7a80 c0d8088c c0019c28
c0019c58
7ea0: c0017f3c c0017eb0 c0025180 c003fea4 0000000b 00000000 00030001
8d9162e4
7ec0: c002f804 0000000b 0000000b c02c7a80 0000000b c0017f04 c0017ee4
c005c260
7ee0: 0000000b 00000000 00030001 8d9162e4 c002f804 0000000b 0000000c
c02c7a80
7f00: c005d258 c005c060 00001000 c0d613d8 be7fd9e8 c0017f3c c0017f3c
c0017f28
7f20: c00fdfb8 c002f804 ffffffec c02c7a80 c0017f74 c0017f40 c00253d8
c0025140
7f40: 00030001 c0017fb0 00000000 8d9162e4 be7ffbe0 00000000 00000000
c0017fb0
7f60: 0002dd00 40037b64 c0017f9c c0017f78 c0025438 c0025204 c0021be8
ffffffff
7f80: be7ffbe0 00000000 00000000 40039e84 c0017fac c0017fa0 c00255cc
c0025418
7fa0: 00000000 c0017fb0 c001e288 c00255c4 00001000 be7fd9e8 00001000
00000000
7fc0: be7fea6c be7ffbe0 00000000 00000000 40039e84 0002dd00 40037b64
be7fea20
7fe0: 00000000 be7fd9e0 4002d9c0 8d9162e4 00000010 ffffffff e24cb004
e24dd014
Backtrace:
[<c0030934>] (__wake_up_common+0x0/0x7c) from [<c0030b20>]
(complete+0x50/0x78)
[<c0030ad0>] (complete+0x0/0x78) from [<bf00515c>] (epio_complete+0x34/0x38
[gadgetfs])
r5 = C0710608 r4 = C0C09A3C
[<bf005128>] (epio_complete+0x0/0x38 [gadgetfs]) from [<bf000400>]
(done+0x80/0xb8 [dm320_function])
[<bf000380>] (done+0x0/0xb8 [dm320_function]) from [<bf00058c>]
(read_fifo+0x80/0x90 [dm320_function])
r6 = C0B20000 r5 = C0710608 r4 = C0C09A3C
[<bf00050c>] (read_fifo+0x0/0x90 [dm320_function]) from [<bf0012f8>]
(handle_core_irqs+0x4f4/0x600 [dm320_functio
n])
r6 = C071062C r5 = C0C09A64 r4 = C0C09A3C
[<bf000e04>] (handle_core_irqs+0x0/0x600 [dm320_function]) from [<c001f02c>]
(__do_irq+0x68/0xac)
[<c001efc4>] (__do_irq+0x0/0xac) from [<c001f1a4>] (do_edge_IRQ+0xb8/0x134)
r8 = C0017CE0 r7 = C0017CE0 r6 = C0D7A278 r5 = 0000000F
r4 = C020C3C4
[<c001f0ec>] (do_edge_IRQ+0x0/0x134) from [<c001f338>]
(asm_do_IRQ+0x54/0x15c)
r7 = 00010105 r6 = 00000000 r5 = C020C3C4 r4 = 0000000F
[<c001f2e4>] (asm_do_IRQ+0x0/0x15c) from [<c001def8>] (__irq_svc+0x38/0x60)
[<c001efc4>] (__do_irq+0x0/0xac) from [<c001f1a4>] (do_edge_IRQ+0xb8/0x134)
r8 = C0017D9C r7 = C0017D9C r6 = C0D4DDA4 r5 = 0000000C
r4 = C020C328
[<c001f0ec>] (do_edge_IRQ+0x0/0x134) from [<c001f338>]
(asm_do_IRQ+0x54/0x15c)
r7 = 00000104 r6 = 0000000A r5 = C020C328 r4 = 0000000C
[<c001f2e4>] (asm_do_IRQ+0x0/0x15c) from [<c001def8>] (__irq_svc+0x38/0x60)
[<c00398ac>] (__do_softirq+0x0/0xd0) from [<c0039aa8>] (irq_exit+0x44/0x58)
r7 = 00000002 r6 = 00000000 r5 = C020C0B8 r4 = 00000000
[<c0039a64>] (irq_exit+0x0/0x58) from [<c001f424>] (asm_do_IRQ+0x140/0x15c)
[<c001f2e4>] (asm_do_IRQ+0x0/0x15c) from [<c001def8>] (__irq_svc+0x38/0x60)
[<c003fe94>] (force_sig_info+0x0/0xb4) from [<c0025180>]
(__do_user_fault+0x50/0x58)
r8 = C0019C58 r7 = C0019C28 r6 = C0D8088C r5 = C02C7A80
r4 = FFFFFFEC
[<c0025130>] (__do_user_fault+0x0/0x58) from [<c00253d8>]
(do_page_fault+0x1e4/0x214)
[<c00251f4>] (do_page_fault+0x0/0x214) from [<c0025438>]
(do_translation_fault+0x30/0xb4)
[<c0025408>] (do_translation_fault+0x0/0xb4) from [<c00255cc>]
(do_PrefetchAbort+0x18/0x1c)
r8 = 40039E84 r7 = 00000000 r6 = 00000000 r5 = BE7FFBE0
r4 = FFFFFFFF
[<c00255b4>] (do_PrefetchAbort+0x0/0x1c) from [<c001e288>]
(ret_from_exception+0x0/0x10)
Code: bad PC value.
<0>Kernel panic - not syncing: Aiee, killing interrupt handler!
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