Hi, On Mon, Aug 06, 2012 at 06:12:05PM +0800, Peiyong Feng wrote: > I got a kernel panic when try hsotg of ok6410 which is based on s3c6410: > > > cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters > Unable to handle kernel NULL pointer dereference at virtual address 00000100 > pgd = c0004000 > [00000100] *pgd=00000000 > Internal error: Oops: 5 [#1] ARM > Modules linked in: > CPU: 0 Not tainted (3.5.0 #9) > PC is at s3c_hsotg_handle_outdone+0x44/0x158 > LR is at s3c_hsotg_irq+0x75c/0x804 > pc : [<c023e7fc>] lr : [<c024061c>] psr: 60000193 > sp : c782fd20 ip : 00000029 fp : c13a1460 > r10: 00000000 r9 : 00000008 r8 : 000000d0 > r7 : c13a1400 r6 : 00000002 r5 : 00000000 r4 : 00060002 > r3 : 000000d0 r2 : 00000000 r1 : 00080200 r0 : c13a1400 > Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel > Control: 00c5387d Table: 50004008 DAC: 00000017 > Process swapper (pid: 1, stack limit = 0xc782e268) > Stack: (0xc782fd20 to 0xc7830000) > fd20: c13a1460 c0200f64 00000000 00060002 00000000 00000002 c13a1400 00000010 > fd40: 00000000 c024061c 00060002 00000000 00000002 00000008 c782fda0 c139a5c0 > fd60: c139a5c0 00000000 00000000 0000005a c04cc52c c04cc594 c04ea5fe c00565c0 > fd80: 00000000 00000000 00000000 c04cc52c c139a5c0 c04cc57c 00000000 c04eb328 > fda0: c04cc55c c04eb324 c04c44c0 c0056768 c04cc52c c04cc57c 00000000 c0058d64 > fdc0: 0000005a c04d7dd8 00000000 c005617c 0000005a c000efbc c04eb350 00000001 > fde0: c782fe08 c000853c c036c540 60000013 ffffffff c782fe3c c04cc57c c04cc55c > fe00: 60000013 c000dd80 c04cc57c c782c000 ffffffff 00000001 60000013 c04cc52c > fe20: c139a5c0 0000005a c04cc57c c04cc55c 60000013 c04c44c0 f6010000 c782fe50 > fe40: c036c53c c036c540 60000013 ffffffff c023fec0 c00574c8 00000000 c008b2dc > fe60: c023fec0 00000000 00000000 c13a1400 0000005a c139a5c0 c04cc52c c0057960 > fe80: 0000005a c13a1400 c04c44b8 00000000 c051d238 c049b0ec 00000000 c03688fc > fea0: c7853e60 c13a1400 c7804f80 00000000 c04c44f4 60000013 c7855a80 00000000 > fec0: c04e1bb4 c04c44c0 c04c44c0 c04e1bb4 c04e1bb4 c051d238 c049b0ec 00000000 > fee0: c04eb040 c020588c c04c44c0 c0204524 c04c44c0 c04c44f4 c04e1bb4 c02046ac > ff00: c13a01e0 c0204738 00000000 c782ff18 c04e1bb4 c0202e30 c7803878 c7823700 > ff20: c04dd1d0 c040b8d4 c04e1bb4 c04e1bb4 c04dd1d0 c0203600 c040b8d4 c01b8568 > ff40: 00000000 00000000 c04e1bb4 00000007 c04eb040 c782e000 c04a65e0 c0204ce8 > ff60: 00000000 c04a65d4 00000007 c04eb040 c782e000 c0008628 c04c7ea0 00000000 > ff80: 0000009c 00000000 c0625cf9 c0037178 00000006 00000006 c0461b84 c042cee8 > ffa0: c04c7ea0 c04abdd4 c04a65d4 00000007 c04eb040 0000009c c04841b0 c04a65e0 > ffc0: 00000000 c048430c 00000006 00000006 c04841b0 00000000 00000000 c048421c > ffe0: c000f08c 00000013 00000000 00000000 00000000 c000f08c 00000000 00000000 > [<c023e7fc>] (s3c_hsotg_handle_outdone+0x44/0x158) from [<c024061c>] > (s3c_hsotg_irq+0x75c/0x804) > [<c024061c>] (s3c_hsotg_irq+0x75c/0x804) from [<c00565c0>] > (handle_irq_event_percpu+0x50/0x1bc) > [<c00565c0>] (handle_irq_event_percpu+0x50/0x1bc) from [<c0056768>] > (handle_irq_event+0x3c/0x5c) > [<c0056768>] (handle_irq_event+0x3c/0x5c) from [<c0058d64>] > (handle_level_irq+0x8c/0x118) > [<c0058d64>] (handle_level_irq+0x8c/0x118) from [<c005617c>] > (generic_handle_irq+0x38/0x44) > [<c005617c>] (generic_handle_irq+0x38/0x44) from [<c000efbc>] > (handle_IRQ+0x30/0x84) > [<c000efbc>] (handle_IRQ+0x30/0x84) from [<c000853c>] (vic_handle_irq+0x68/0xa8) > [<c000853c>] (vic_handle_irq+0x68/0xa8) from [<c000dd80>] (__irq_svc+0x40/0x60) > Exception stack(0xc782fe08 to 0xc782fe50) > fe00: c04cc57c c782c000 ffffffff 00000001 60000013 c04cc52c > fe20: c139a5c0 0000005a c04cc57c c04cc55c 60000013 c04c44c0 f6010000 c782fe50 > fe40: c036c53c c036c540 60000013 ffffffff > [<c000dd80>] (__irq_svc+0x40/0x60) from [<c036c540>] > (_raw_spin_unlock_irqrestore+0x10/0x14) > [<c036c540>] (_raw_spin_unlock_irqrestore+0x10/0x14) from [<c00574c8>] > (__setup_irq+0x178/0x3f8) > [<c00574c8>] (__setup_irq+0x178/0x3f8) from [<c0057960>] > (request_threaded_irq+0xc4/0x12c) > [<c0057960>] (request_threaded_irq+0xc4/0x12c) from [<c03688fc>] > (s3c_hsotg_probe+0x14c/0x700) > [<c03688fc>] (s3c_hsotg_probe+0x14c/0x700) from [<c020588c>] > (platform_drv_probe+0x18/0x1c) > [<c020588c>] (platform_drv_probe+0x18/0x1c) from [<c0204524>] > (driver_probe_device+0x78/0x200) > [<c0204524>] (driver_probe_device+0x78/0x200) from [<c0204738>] > (__driver_attach+0x8c/0x90) > [<c0204738>] (__driver_attach+0x8c/0x90) from [<c0202e30>] > (bus_for_each_dev+0x60/0x8c) > [<c0202e30>] (bus_for_each_dev+0x60/0x8c) from [<c0203600>] > (bus_add_driver+0xac/0x250) > [<c0203600>] (bus_add_driver+0xac/0x250) from [<c0204ce8>] > (driver_register+0x58/0x130) > [<c0204ce8>] (driver_register+0x58/0x130) from [<c0008628>] > (do_one_initcall+0x34/0x17c) > [<c0008628>] (do_one_initcall+0x34/0x17c) from [<c048430c>] > (kernel_init+0xf0/0x1bc) > [<c048430c>] (kernel_init+0xf0/0x1bc) from [<c000f08c>] > (kernel_thread_exit+0x0/0x8) > Code: e0433106 e0833006 e1a03183 e0828003 (e5984030) > ---[ end trace 2ea4e574318ecf99 ]--- > Kernel panic - not syncing: Fatal exception in interrupt > ----------------------------------------------------------------------------------- > > > When I try locate the source using arm-linux-gdb, I got this: > ------------------------------------------------------------- > GNU gdb (Sourcery G++ Lite 2008q3-72) 6.8.50.20080821-cvs > Copyright (C) 2008 Free Software Foundation, Inc. > License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> > This is free software: you are free to change and redistribute it. > There is NO WARRANTY, to the extent permitted by law. Type "show copying" > and "show warranty" for details. > This GDB was configured as "--host=i686-pc-linux-gnu > --target=arm-none-linux-gnueabi". > For bug reporting instructions, please see: > <https://support.codesourcery.com/GNUToolchain/>... > (gdb) l *(s3c_hsotg_handle_outdone+0x44) > 0xc023e7fc is in s3c_hsotg_handle_outdone (drivers/usb/gadget/s3c-hsotg.c:1553). > 1548 static void s3c_hsotg_handle_outdone(struct s3c_hsotg *hsotg, > 1549 int epnum, bool was_setup) > 1550 { > 1551 u32 epsize = readl(hsotg->regs + DOEPTSIZ(epnum)); > 1552 struct s3c_hsotg_ep *hs_ep = &hsotg->eps[epnum]; > 1553 struct s3c_hsotg_req *hs_req = hs_ep->req; > 1554 struct usb_request *req = &hs_req->req; > 1555 unsigned size_left = DxEPTSIZ_XferSize_GET(epsize); > 1556 int result = 0; > 1557 > (gdb) > > > > I also try the old linux like 2.6.36, I works fine. Lukasz, any ideas ? -- balbi
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