On Wed, 28 Apr 2010 12:57:19 +0200, Bin Shi <Bin.Shi@xxxxxxx> wrote:
I am developing ARM1136 platform with USB otg. Test case shows kernel
panic after almost two whole days sleep/wakeup with usb mass storage
plugin, also with audio playback and sd copy, which means high load for
testing.
First of, is the "almost two whole days" some kind of magic barrier? Can
you reproduce the bug after a shorter sleep?
Second of, defining DEBUG, VERBOSE_DEBUG and DUMP_MSGS at the beginning
of file_storage.c (definitions of later two are commented near the
beginning of the file).
And lastly, some time ago I did some remodelling in file_storage.c. Those
could be a cause of problems. Could you try reverting all my changes
(do a "git log --author=Nazarewicz" to find those) and then try to reproduce
the bug. This may limit us to only a handful of commits.
On the other hand, file_storage does nothing on suspend and resume -- gadget
data is changed only in fsg_bind() and fsg_unbind() -- so it may be a problem
somewhere completely elsewhere.
[ 73.112109] PM-pm_s_done: (73112086)
[ 4.811657] PM-pm_w_initiate: (4811631)
[ 5.111843] usbcd_set_mode: in device mode
[ 5.111880] usbcd_start_controller, the cmd is 0x80001
[ 5.112227] SIRFSOC-FB: LCD resumed
[ 5.112374] SiRFSoC Backlight: Resumed
[ 5.121778] soc-audio soc-audio: scheduling resume work
[ 5.148505] Restarting tasks ... Suspended. Trying resume.
<6>soc-audio soc-audio: starting resume work
[ 5.209285] soc-audio soc-audio: resume work completed
Done.^M
[ 5.260771] done.
Woken Up
Received Event 3
SLEPT FOR 186 SECONDS IN SESSION 806
[ 5.419961] Unable to handle kernel NULL pointer dereference at
virtual address 0000001c
[ 5.425234] pgd = c3bdc000
[ 5.427918] [0000001c] *pgd=c3357031, *pte=00000000, *ppte=00000000
[ 5.434175] Internal error: Oops: 17 [#1] PREEMPT
[ 5.438852] Modules linked in: g_file_storage(-) sirfsoc_gps
rtc1_sirfsoc sirfsoc_wdt sirfsoc_uspserial g_usbdrv ehci_hcd usbcore
snd_soc_cb_modac_ts snd_soc_modac snd_soc_sirfsoc_i2s
snd_soc_ts_stream_mode snd_soc_sirfsoc snd_soc_core snd_pcm snd_timer
snd soundcore snd_page_alloc [last unloaded: g_file_storage]
[ 5.466551] CPU: 0 Not tainted (2.6.28-default #1)
[ 5.471729] PC is at fsg_setup+0x18/0x3ac [g_file_storage]
[ 5.477204] LR is at pcd_do_gadget_setup+0x38/0x50 [g_usbdrv]
[ 5.482869] pc : [<bf683aa4>] lr : [<bf09490c>] psr: a0000193
[ 5.482881] sp : c3375da8 ip : 00000000 fp : c3375dcc
[ 5.494320] r10: c48d81ac r9 : 00000001 r8 : 00000000
[ 5.499529] r7 : bf09ab58 r6 : 00000000 r5 : 00000000 r4 :
ffc24028
[ 5.506040] r3 : bf683a8c r2 : ffc24028 r1 : ffc24028 r0 :
bf09ab60
[ 5.512552] Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM
Segment user
[ 5.519755] Control: 00c5387d Table: c3bdc008 DAC: 00000015
[ 5.525484] Process rmmod (pid: 25101, stack limit = 0xc3374260)
[ 5.531472] Stack: (0xc3375da8 to 0xc3376000)
[ 5.535808] 5da0: bf09ab58 c3a71400 00000000
bf09ab58 00000000 00000001
[ 5.544053] 5dc0: c3375de4 c3375dd0 bf09490c bf683a98 ffc24028
c3a71400 c3375e24 c3375de8
[ 5.552299] 5de0: bf095768 bf0948e0 c00bc7bc c00bc744 00000000
00000081 c3375e3c bf09ab20
[ 5.560545] 5e00: 1f202f28 00000081 0000000a 00000000 c3374000
bece4e04 c3375e44 c3375e28
[ 5.568791] 5e20: bf094094 bf0954dc c39036a0 00000000 00000000
0000000a c3375e64 c3375e48
[ 5.577037] 5e40: c00cb480 bf09403c c3374000 c031449c c39036a0
0000000a c3375e84 c3375e68
[ 5.585283] 5e60: c00cd578 c00cb450 0000000a c034a8d4 00000000
00000001 c3375ea4 c3375e88
[ 5.593529] 5e80: c0087058 c00cd4d8 ffffffff f9020000 bf686190
00000001 c3375f14 c3375ea8
[ 5.601775] 5ea0: c0087a64 c008700c c3800120 0183af40 00000015
00000003 c3374000 bf09ab20
[ 5.610021] 5ec0: bf686190 bf09ab60 bf09ab58 c3374000 bece4e04
c3375f14 c3375eb0 c3375ef0
[ 5.618267] 5ee0: bf096b14 bf09665c 40000013 ffffffff c394a3c0
00000880 bf6862a0 c3374000
[ 5.626513] 5f00: c3375f34 c3374000 c3375f2c c3375f18 bf683f3c
bf0965b8 00000000 00000880
[ 5.634759] 5f20: c3375fa4 c3375f30 c00c7b6c bf683f0c c008d00c
69665f67 735f656c 61726f74
[ 5.643005] 5f40: c3006567 00000200 00000000 40158000 c00bb900
ffffffff bece4e08 00000880
[ 5.651251] 5f60: 00000000 00000000 000000cc 00ce4e04 bf6862a0
00000880 c3375f7c 00000000
[ 5.659497] 5f80: ffffffff 735f656c 61726f74 00006567 00000081
c0087f84 00000000 c3375fa8
[ 5.667743] 5fa0: c0087e00 c00c79ec 735f656c 61726f74 bece4aa8
00000880 00000000 69665f67
[ 5.675989] 5fc0: 735f656c 61726f74 00006567 00000081 00000000
000000cc bece4e04 00000002
[ 5.684235] 5fe0: bece4aa8 bece4a98 00022a40 40158c50 60000010
bece4aa8 00000000 00000000
[ 5.692482] Backtrace:
[ 5.694915] [<bf683a8c>] (fsg_setup+0x0/0x3ac [g_file_storage]) from
[<bf09490c>] (pcd_do_gadget_setup+0x38/0x50 [g_usbdrv])
[ 5.706115] r9:00000001 r8:00000000 r7:bf09ab58 r6:00000000
r5:c3a71400
[ 5.712620] r4:bf09ab58
[ 5.715225] [<bf0948d4>] (pcd_do_gadget_setup+0x0/0x50 [g_usbdrv])
from [<bf095768>] (pcd_intr_handler+0x298/0x8f4[g_usbdrv])
[ 5.726596] r5:c3a71400 r4:ffc24028
[ 5.730154] [<bf0954d0>] (pcd_intr_handler+0x0/0x8f4 [g_usbdrv]) from
[<bf094094>] (usbcd_irq_handler+0x64/0x9c [g_usbdrv])
[ 5.741265] [<bf094030>] (usbcd_irq_handler+0x0/0x9c [g_usbdrv]) from
[<c00cb480>] (handle_IRQ_event+0x3c/0x74)
[ 5.751335] r7:0000000a r6:00000000 r5:00000000 r4:c39036a0
[ 5.756975] [<c00cb444>] (handle_IRQ_event+0x0/0x74) from
[<c00cd578>] (handle_level_irq+0xac/0x154)
[ 5.766090] r7:0000000a r6:c39036a0 r5:c031449c r4:c3374000
[ 5.771732] [<c00cd4cc>] (handle_level_irq+0x0/0x154) from
[<c0087058>] (__exception_text_start+0x58/0x8c)
[ 5.781366] r7:00000001 r6:00000000 r5:c034a8d4 r4:0000000a
[ 5.787007] [<c0087000>] (__exception_text_start+0x0/0x8c) from
[<c0087a64>] (__irq_svc+0x44/0x88)
[ 5.795952] Exception stack(0xc3375ea8 to 0xc3375ef0)
[ 5.800981] 5ea0: c3800120 0183af40 00000015
00000003 c3374000 bf09ab20
[ 5.809227] 5ec0: bf686190 bf09ab60 bf09ab58 c3374000 bece4e04
c3375f14 c3375eb0 c3375ef0
[ 5.817473] 5ee0: bf096b14 bf09665c 40000013
ffffffff
[ 5.825721] r7:00000001 r6:bf686190 r5:f9020000 r4:ffffffff
[ 5.831362] [<bf0965ac>] (usb_gadget_unregister_driver+0x0/0x118
[g_usbdrv]) from [<bf683f3c>] (fsg_cleanup+0x3c/0x68 [g_file_storage])
[ 5.843517] r9:c3374000 r8:c3375f34 r7:c3374000 r6:bf6862a0
r5:00000880
[ 5.850025] r4:c394a3c0
[ 5.852629] [<bf683f00>] (fsg_cleanup+0x0/0x68 [g_file_storage]) from
[<c00c7b6c>] (sys_delete_module+0x18c/0x220)
[ 5.862959] r5:00000880 r4:00000000
[ 5.866517] [<c00c79e0>] (sys_delete_module+0x0/0x220) from
[<c0087e00>] (ret_fast_syscall+0x0/0x2c)
[ 5.875632] r8:c0087f84 r7:00000081 r6:00006567 r5:61726f74
r4:735f656c
[ 5.882314] Code: e24cb004 e59050e0 e1a04001 e3a0c000 (e595301c)
[ 5.888639] Kernel panic - not syncing: Fatal exception in interrupt
After trace break site, it was found that at addr 3aa4, r5 has value
0x0, that load 0x0+0x1c(#28) address to r3, while 0x1c could not be
accessed. In function fsg_setup(), struct fsg_dev
*fsg=get_gadget_data(gadget) makes the error, which gadget->dev being
NULL value.
00003a8c <fsg_setup>:
3a8c: e1a0c00d mov ip, sp
3a90: e92ddbf0 push {r4, r5, r6, r7, r8, r9, fp,
ip, lr, pc}
3a94: e24cb004 sub fp, ip, #4 ; 0x4
3a98: e59050e0 ldr r5, [r0, #224]
3a9c: e1a04001 mov r4, r1
3aa0: e3a0c000 mov ip, #0 ; 0x0
3aa4: e595301c ldr r3, [r5, #28]
3aa8: e5951018 ldr r1, [r5, #24]
3aac: e2833001 add r3, r3, #1 ; 0x1
3ab0: e5d40006 ldrb r0, [r4, #6]
3ab4: e5d42007 ldrb r2, [r4, #7]
3ab8: e585301c str r3, [r5, #28]
3abc: e581c014 str ip, [r1, #20]
3ac0: e5953018 ldr r3, [r5, #24]
3ac4: e1808402 orr r8, r0, r2, lsl #8
3ac8: e583c004 str ip, [r3, #4]
3acc: e5d46000 ldrb r6, [r4]
3ad0: e2063060 and r3, r6, #96 ; 0x60
3ad4: e3530020 cmp r3, #32 ; 0x20
3ad8: 0a000030 beq 3ba0 <fsg_setup+0x114>
--
Best regards, _ _
| Humble Liege of Serenely Enlightened Majesty of o' \,=./ `o
| Computer Science, Michał "mina86" Nazarewicz (o o)
+----[mina86*mina86.com]---[mina86*jabber.org]----ooO--(_)--Ooo--
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