Bug ID: 71261 modprobe xhci-hcd driver modules failed

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi ,

When we try to modprode Xhci-hcd Driver with "dmesg -n 6" command in
background , xhci driver loading failed.But if we give dmesg -n 7/5 or
any thing its work.

When Extended Capability register is being read its given zero insted
of 544 value .
Here is the Step to reproduce:
#dd if=/dev/mtd4 of=/dev/null bs=1M count=64 &
#dmesg -n 6
#modprobe xhci-hcd

[  201.479243]  xhci  xhci.0: WARN: no supported page size
[  201.501273]  xhci  xhci.0: No Extended Capability registers, unable
to set up roothub.
[  201.510278]  xhci  xhci.0: Couldn't initialize memory
7+0 records in
7+0 records out
7340032 bytes (7.0MB) copied, 6.254078 seconds, 1.1MB/s
[  207.996342]  xhci  xhci.0: Host not halted after 16000 microseconds.
[  208.004166]  xhci  xhci.0: Host controller not halted, aborting reset.
[  208.011761] Unable to handle kernel NULL pointer dereference at
virtual address 00000000
[  208.019847] pgd = 830ec000
[  208.022547] [00000000] *pgd=030d2831, *pte=00000000, *ppte=00000000
[  208.028825] Internal error: Oops: 17 [#1] PREEMPT SMP ARM
[  208.034216] Modules linked in: xhci_hcd(+)
[  208.038317] CPU: 2    Not tainted  (3.4.14 #14)
[  208.042868] PC is at xhci_mem_cleanup+0x390/0x530 [xhci_hcd]
[  208.048530] LR is at xhci_mem_cleanup+0x384/0x530 [xhci_hcd]
[  208.054185] pc : [<7f0091dc>]    lr : [<7f0091d0>]    psr: a0000093
[  208.054189] sp : 83001d30  ip : 836452b0  fp : 0000002f
[  208.065662] r10: 8a7e102c  r9 : 8364bbc8  r8 : 00000000
[  208.070881] r7 : 8364df60  r6 : 8a7e1084  r5 : 800186b0  r4 : 8a7e1000
[  208.077403] r3 : 00000000  r2 : 00000000  r1 : 00000000  r0 : 20000013
[  208.083927] Flags: NzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM
Segment user
[  208.091144] Control: 18c53c7d  Table: 030ec04a  DAC: 00000015
[  208.096885] Process modprobe (pid: 179, stack limit = 0x830002f0)
[  208.102973] Stack: (0x83001d30 to 0x83002000)
[  208.107327] 1d20:                                     00000000
7f012160 8a7e1000 8364dfc0
[  208.115502] 1d40: 00000001 00000001 00000000 00000000 8364bbc8
7f00a16c 00000000 8000e418
[  208.123678] 1d60: 8a7e1000 00000008 00000060 8d89a000 000000d0
00000000 0e405000 0e403000
[  208.131853] 1d80: 00000000 8a74c200 8a7e1000 90a00000 8364dfc0
00000080 00000001 83665ed0
[  208.140028] 1da0: 0000002f 7f006308 7f006368 8a74c200 00000000
8a74c2a0 00000038 80348bec
[  208.148203] 1dc0: 00000000 000013e5 8364eb98 8d89a000 8364dfb8
8a74c200 00000038 8364dfc0
[  208.156378] 1de0: 00000000 000013e5 8364eb98 7f0115dc 00000000
8364dfc0 8364dfc8 8364dfc0
[  208.164552] 1e00: 836a7f98 836a7fa0 8365f4a8 7f014300 0000001c
802c9bd8 802c9bc0 802c8804
[  208.172727] 1e20: 83000038 8364dfc0 7f014300 8364dff4 00000000
7f017000 0000001c 802c8a0c
[  208.180901] 1e40: 7f014300 802c8980 00000000 802c6fe4 8d82a360
8d8b9538 7f014300 8365f4a8
[  208.189076] 1e60: 8a7ea900 802c8028 7f012aa0 7f014300 8d82eb40
7f014300 7f014404 83000000
[  208.197251] 1e80: 00000000 7f017000 000013e5 0000001c 0000002f
802c8f44 00000000 00000000
[  208.205425] 1ea0: 7f014404 83000000 00000000 7f017000 0000001c
7f017044 83674c80 80008674
[  208.213599] 1ec0: 8a7b4f40 00000000 00000001 80065b28 000013e5
00000001 00000001 7f014404
[  208.221774] 1ee0: 7f01444c 830b1c80 00000001 0000001c 0000002f
800645bc 7f014410 00007fff
[  208.229949] 1f00: 00000000 0010c608 0010c5a8 00000000 7f014540
83000000 0010c5c8 908d612c
[  208.238124] 1f20: 908d71ac 0010c5c8 908c2000 0001c81c 908d6aa4
908d68bb 908d8ecc 00014558
[  208.246298] 1f40: 00014df8 00000000 00000000 0000002d 0000002e
00000024 00000000 00000019
[  208.254472] 1f60: 00000000 7f0118ac 00000001 7f0118b4 00000001
00000000 00000000 800c0620
[  208.262646] 1f80: 00000003 0001c81c 00000000 00000000 00000080
8000ea28 83000000 00000000
[  208.270822] 1fa0: 0010c5a8 8000e880 0001c81c 00000000 76cf0000
0001c81c 0010c5c8 0010c608
[  208.278996] 1fc0: 0001c81c 00000000 00000000 00000080 0010c718
0010c608 0010c608 0010c5a8
[  208.287171] 1fe0: 7ef2aa88 7ef2aa78 00023abc 76de1020 60000010
76cf0000 00000000 00000000
[  208.295366] [<7f0091dc>] (xhci_mem_cleanup+0x390/0x530 [xhci_hcd])
from [<7f00a16c>] (xhci_mem_init+0xdf0/0x1e20 [xhci_hcd])
[  208.306597] [<7f00a16c>] (xhci_mem_init+0xdf0/0x1e20 [xhci_hcd])
from [<7f006308>] (xhci_gen_setup+0x1ec/0x24c [xhci_hcd])
[  208.317654] [<7f006308>] (xhci_gen_setup+0x1ec/0x24c [xhci_hcd])
from [<80348bec>] (usb_add_hcd+0x188/0x664)
[  208.327494] [<80348bec>] (usb_add_hcd+0x188/0x664) from
[<7f0115dc>] ( xhci_plat_probe+0x19c/0x264 [xhci_hcd])
[  208.338027] [<7f0115dc>] ( xhci_plat_probe+0x19c/0x264 [xhci_hcd])
from [<802c9bd8>] (platform_drv_probe+0x18/0x1c)
[  208.348993] [<802c9bd8>] (platform_drv_probe+0x18/0x1c) from
[<802c8804>] (driver_probe_device+0x88/0x204)
[  208.358649] [<802c8804>] (driver_probe_device+0x88/0x204) from
[<802c8a0c>] (__driver_attach+0x8c/0x90)
[  208.368044] [<802c8a0c>] (__driver_attach+0x8c/0x90) from
[<802c6fe4>] (bus_for_each_dev+0x50/0x7c)
[  208.377091] [<802c6fe4>] (bus_for_each_dev+0x50/0x7c) from
[<802c8028>] (bus_add_driver+0x1ec/0x2ac)
[  208.386224] [<802c8028>] (bus_add_driver+0x1ec/0x2ac) from
[<802c8f44>] (driver_register+0x78/0x178)
[  208.395366] [<802c8f44>] (driver_register+0x78/0x178) from
[<7f017044>] (init_module+0x44/0x64 [xhci_hcd])
[  208.405028] [<7f017044>] (init_module+0x44/0x64 [xhci_hcd]) from
[<80008674>] (do_one_initcall+0x34/0x174)
[  208.414688] [<80008674>] (do_one_initcall+0x34/0x174) from
[<800645bc>] (sys_init_module+0xe0/0x1ae8)
[  208.423913] [<800645bc>] (sys_init_module+0xe0/0x1ae8) from
[<8000e880>] (ret_fast_syscall+0x0/0x30)
[  208.433045] Code: eb53899a e5b61084 e1a03001 e1560001 (e4132004)
[  208.439186] ---[ end trace 1b209721f58098ec ]---
[  208.443831] note: modprobe[179] exited with preempt_count 1
Segmentation fault
[1]+  Done                       dd if=/dev/mtd6 of=/dev/null bs=1M count=7

Thanks
shishir tiwari
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux