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Hi every body,
I just enabled g_file_storgage and ether driver in usb gadget. And it is crashing……… can any one tell me what is the problem. Here is the log I saw sysfs in the function calls then I enabled sysfs also but it is again crashing at the same place. And same is true for ether driver also.
---------------------------------------------------------- BUG: warning at lib/kref.c:32/kref_get() Unable to handle kernel NULL pointer dereference at virtual address 00000008 pgd = c0f78000 [00000008] *pgd=20f73031, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] Modules linked in: zilog_bsp_usb_file_storage zilog_bsp_usb_device zilog_bsp_sd zilog_bsp_cipher zilog_bsp_printer zilog_bsp_spi zilog_bsp_sec zilog_bsp_sc zilog_bsp_log zilog_bsp_adc zilog_bsp_uart zilog_bsp_wdt zilog_bsp_sha zilog_bsp_buzz zilog_bsp_rng zilog_bsp_dmc20434 zilog_bsp_lcd zilog_bsp_mcr zilog_bsp_dma zilog_bsp_keypad zilog_bsp_tmr zilog_bsp_gpio zilog_bsp_endian zilog_bsp_delay zilog_bsp_clock zilog_bsp_sem zilog_bsp_os_mem zilog_bsp_int CPU: 0 PC is at create_dir+0x14/0x1d0 LR is at sysfs_create_dir+0x6c/0x8c pc : [<c00a3f40>] lr : [<c00a4168>] Tainted: P sp : c0845e0c ip : c0845e34 fp : c0845e30 r10: c0f6a600 r9 : bf059c10 r8 : bf059c94 r7 : 00000000 r6 : bf059c2c r5 : c0f6a224 r4 : c0f6a28c r3 : c0845e34 r2 : c0f6a290 r1 : 00000000 r0 : c0f6a28c Flags: NzCv IRQs on FIQs on Mode SVC_32 Segment user Control: 4000717F Table: 20F78000 DAC: 00000015 Process exe (pid: 828, stack limit = 0xc0844198) Stack: (0xc0845e0c to 0xc0846000) 5e00: c0f6a224 c0f6a28c c0f6a224 bf059c2c c0f6a28c 5e20: bf059c94 c0845e48 c0845e34 c00a4168 c00a3f3c 00000000 c0f6a28c c0845e6c 5e40: c0845e4c c0127050 c00a410c c0f6a224 c0f6a224 bf059c2c c0f6a28c 00000000 5e60: c0845e8c c0845e70 c014cc80 c0126fa4 c0f6a224 c0f6a224 00000000 bf06168c 5e80: c0845ea0 c0845e90 c014cf10 c014cc38 c0f6a200 c0845ed4 c0845ea4 bf0632ac 5ea0: c014cf04 00000000 00000016 bf059c10 00000000 c0f6a610 c185823c c0dbe368 5ec0: 00000016 c0dbe338 c0845ef0 c0845ed8 bf0557e0 bf0630dc c0f6a600 fffffff4 5ee0: c0f6a610 c0845f0c c0845ef4 bf063080 bf05576c c0dbe358 c0dbe000 bf061900 5f00: c0845fa4 c0845f10 c004e780 bf063010 00000000 c1858214 c1858124 c18581ec 5f20: c089e340 c185ae9c 00000014 00000009 00000000 00000000 00000000 00000000 5f40: 00000000 00000000 00000000 00000000 c1853000 00000103 00000103 00000000 5f60: c1857e1a 00000016 bf060d10 c1857ef4 bf06190c 00000000 00000000 00000004 5f80: 00000000 00000000 00000080 c0020ea4 c0844000 00000002 00000000 c0845fa8 5fa0: c0020d00 c004d53c 00000000 00000000 00900080 4016a000 00008808 0014b238 5fc0: 00000004 00000000 00000000 0014b210 00000000 00000000 00000002 beef0ea4 5fe0: beeee7dc beeee7d0 00059d50 401071b0 60000010 00900080 00000000 00000000 Backtrace: [<c00a3f2c>] (create_dir+0x0/0x1d0) from [<c00a4168>] (sysfs_create_dir+0x6c/0x8c) r8 = BF059C94 r7 = C0F6A28C r6 = BF059C2C r5 = C0F6A224 r4 = C0F6A28C [<c00a40fc>] (sysfs_create_dir+0x0/0x8c) from [<c0127050>] (kobject_add+0xbc/0x168) r4 = C0F6A28C [<c0126f94>] (kobject_add+0x0/0x168) from [<c014cc80>] (device_add+0x58/0x140) r8 = 00000000 r7 = C0F6A28C r6 = BF059C2C r5 = C0F6A224 r4 = C0F6A224 [<c014cc28>] (device_add+0x0/0x140) from [<c014cf10>] (device_register+0x1c/0x20) r7 = BF06168C r6 = 00000000 r5 = C0F6A224 r4 = C0F6A224 [<c014cef4>] (device_register+0x0/0x20) from [<bf0632ac>] (fsg_bind+0x1e0/0x740 [zilog_bsp_usb_file_storage]) r4 = C0F6A200 [<bf0630cc>] (fsg_bind+0x0/0x740 [zilog_bsp_usb_file_storage]) from [<bf0557e0>] (usb_gadget_register_driver+0x84/0xd0 [zilog_bsp_usb_device]) [<bf05575c>] (usb_gadget_register_driver+0x0/0xd0 [zilog_bsp_usb_device]) from [<bf063080>] (fsg_init+0x80/0xcc [zilog_bsp_usb_file_storage]) r6 = C0F6A610 r5 = FFFFFFF4 r4 = C0F6A600 [<bf063000>] (fsg_init+0x0/0xcc [zilog_bsp_usb_file_storage]) from [<c004e780>] (sys_init_module+0x1254/0x1330) r6 = BF061900 r5 = C0DBE000 r4 = C0DBE358 [<c004d52c>] (sys_init_module+0x0/0x1330) from [<c0020d00>] (ret_fast_syscall+0x0/0x2c) Code: e92dd9f0 e24cb004 e24dd004 e1a07001 (e5911008) Segmentation fault
Regards Vivek
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