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KDB: stack backtrace:

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Aug 1st, 2013
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  1. [root@FreeBSD.ttyu0] ~ # ti_mmchs0: Error: current cmd NULL, already done?
  2. Aug 1 12:13:10 FreeBSD su: ghw to root on /dev/pts/1
  3. lock order reversal: (sleepable after non-sleepable)
  4. 1st 0xc2c53298 run0 (network driver) @ /usr/src/sys/dev/usb/usb_transfer.c:2184
  5. 2nd 0xc082dd50 user map (user map) @ /usr/src/sys/vm/vm_map.c:3821
  6. KDB: stack backtrace:
  7. db_trace_self() at db_trace_self
  8. pc = 0xc057928c lr = 0xc022dc6c (db_trace_self_wrapper+0x30)
  9. sp = 0xdd822934 fp = 0xdd822a4c
  10. r10 = 0xc2c53298
  11. db_trace_self_wrapper() at db_trace_self_wrapper+0x30
  12. pc = 0xc022dc6c lr = 0xc039ca70 (kdb_backtrace+0x38)
  13. sp = 0xdd822a54 fp = 0xdd822a5c
  14. r4 = 0xc06ca3d4 r5 = 0xc060261a
  15. r6 = 0xc05ddbb9 r7 = 0xc05c4649
  16. kdb_backtrace() at kdb_backtrace+0x38
  17. pc = 0xc039ca70 lr = 0xc03b697c (witness_checkorder+0xddc)
  18. sp = 0xdd822a64 fp = 0xdd822ab4
  19. r4 = 0xc0602655
  20. witness_checkorder() at witness_checkorder+0xddc
  21. pc = 0xc03b697c lr = 0xc036e1c0 (_sx_slock+0x84)
  22. sp = 0xdd822abc fp = 0xdd822ae4
  23. r4 = 0x00000eed r5 = 0xc0602617
  24. r6 = 0xc082dd50 r7 = 0xc082dd60
  25. r8 = 0x00000000 r9 = 0x00000001
  26. r10 = 0x00000001
  27. _sx_slock() at _sx_slock+0x84
  28. pc = 0xc036e1c0 lr = 0xc055c69c (vm_map_lookup+0x70)
  29. sp = 0xdd822aec fp = 0xdd822b24
  30. r4 = 0xc082dd00 r5 = 0xc0602617
  31. r6 = 0x00000000 r7 = 0x00000000
  32. r8 = 0xdd822c48
  33. vm_map_lookup() at vm_map_lookup+0x70
  34. pc = 0xc055c69c lr = 0xc0550aec (vm_fault_hold+0x104)
  35. sp = 0xdd822b2c fp = 0xdd822c8c
  36. r4 = 0xc082dd00 r5 = 0x00000002
  37. r6 = 0xc26d6320 r7 = 0x00000000
  38. r8 = 0x00000000 r9 = 0x00000001
  39. r10 = 0xc08309e8
  40. vm_fault_hold() at vm_fault_hold+0x104
  41. pc = 0xc0550aec lr = 0xc05509a0 (vm_fault+0x88)
  42. sp = 0xdd822c94 fp = 0xdd822cb4
  43. r4 = 0xc082dd00 r5 = 0x00000002
  44. r6 = 0xc26d6320 r7 = 0x00000000
  45. r8 = 0x00000000 r9 = 0x00000001
  46. r10 = 0xc08309e8
  47. vm_fault() at vm_fault+0x88
  48. pc = 0xc05509a0 lr = 0xc05881cc (data_abort_handler+0x2a8)
  49. sp = 0xdd822cbc fp = 0xdd822d5c
  50. r4 = 0xc25dd640 r5 = 0xc26d6320
  51. r6 = 0xc06078cd r7 = 0xc25dd6e8
  52. r8 = 0xdd822d64 r9 = 0xdd822ef8
  53. r10 = 0xc082dd00
  54. data_abort_handler() at data_abort_handler+0x2a8
  55. pc = 0xc05881cc lr = 0xc057aab8 (exception_exit)
  56. sp = 0xdd822d64 fp = 0xdd822de0
  57. r4 = 0xc2c57540 r5 = 0xc2c57540
  58. r6 = 0xc26d0394 r7 = 0x00001000
  59. r8 = 0xc2c57000 r9 = 0xc06ba000
  60. r10 = 0xc26d01b0
  61. exception_exit() at exception_exit
  62. pc = 0xc057aab8 lr = 0xc0285a80 (usbd_callback_wrapper+0x5e4)
  63. sp = 0xdd822db0 fp = 0xdd822de0
  64. r0 = 0x00000000 r1 = 0x00000001
  65. r2 = 0x0000000c r3 = 0xc26d0394
  66. r4 = 0xc2c57540 r5 = 0xc2c57540
  67. r6 = 0xc26d0394 r7 = 0x00001000
  68. r8 = 0xc2c57000 r9 = 0xc06ba000
  69. r10 = 0xc26d01b0 r12 = 0x000000c0
  70. usbpf_xfertap() at usbpf_xfertap+0x30
  71. pc = 0xc0280544 lr = 0xc0285a80 (usbd_callback_wrapper+0x5e4)
  72. sp = 0xdd822de8 fp = 0xdd822e28
  73. r4 = 0xc2c57540 r5 = 0xc2c575f3
  74. r6 = 0xc26d0394 r7 = 0x00001000
  75. r8 = 0xc2c57000 r9 = 0xc06ba000
  76. r10 = 0xc26d01b0
  77. usbd_callback_wrapper() at usbd_callback_wrapper+0x5e4
  78. pc = 0xc0285a80 lr = 0xc0286d44 (usb_command_wrapper+0x15c)
  79. sp = 0xdd822e30 fp = 0xdd822e48
  80. r4 = 0xc2c57030 r5 = 0xc06ba000
  81. r6 = 0xc05c4980 r7 = 0xc05c49a7
  82. r8 = 0x00000000 r9 = 0xc05c4994
  83. r10 = 0xc05c3f6d
  84. usb_command_wrapper() at usb_command_wrapper+0x15c
  85. pc = 0xc0286d44 lr = 0xc0285cb0 (usb_callback_proc+0x70)
  86. sp = 0xdd822e50 fp = 0xdd822e58
  87. r4 = 0xc05c4646 r5 = 0xc2c57000
  88. r6 = 0xc26d0214 r7 = 0xc2c57044
  89. r8 = 0x00000000 r9 = 0xc06ba068
  90. usb_callback_proc() at usb_callback_proc+0x70
  91. pc = 0xc0285cb0 lr = 0xc0280da4 (usb_process+0x100)
  92. sp = 0xdd822e60 fp = 0xdd822e80
  93. r4 = 0xc26d0204 r5 = 0xc26d020c
  94. usb_process() at usb_process+0x100
  95. pc = 0xc0280da4 lr = 0xc0337514 (fork_exit+0x88)
  96. sp = 0xdd822e88 fp = 0xdd822ea0
  97. r4 = 0xc26d6320 r5 = 0xc25dd640
  98. r6 = 0xc0280ca4 r7 = 0xc26d0204
  99. r8 = 0xdd822ea8 r9 = 0x00000000
  100. r10 = 0x00000000
  101. fork_exit() at fork_exit+0x88
  102. pc = 0xc0337514 lr = 0xc0587dc0 (fork_trampoline+0x14)
  103. sp = 0xdd822ea8 fp = 0x00000000
  104. r4 = 0xc0280ca4 r5 = 0xc26d0204
  105. r6 = 0xf2ffe7f0 r7 = 0x6be3e6ec
  106. r8 = 0x00000000
  107. fork_trampoline() at fork_trampoline+0x14
  108. pc = 0xc0587dc0 lr = 0xc0587dc0 (fork_trampoline+0x14)
  109. sp = 0xdd822ea8 fp = 0x00000000
  110. Unable to unwind further
  111.  
  112. vm_fault(0xc082dd00, 0, 1, 0) -> 1
  113. Fatal kernel mode data abort: 'Translation Fault (P)'
  114. trapframe: 0xdd822d64
  115. FSR=00000017, FAR=00000008, spsr=a0000013
  116. r0 =00000000, r1 =00000001, r2 =0000000c, r3 =c26d0394
  117. r4 =c2c57540, r5 =c2c57540, r6 =c26d0394, r7 =00001000
  118. r8 =c2c57000, r9 =c06ba000, r10=c26d01b0, r11=dd822de0
  119. r12=000000c0, ssp=dd822db0, slr=c0285a80, pc =c0280544
  120.  
  121. [ thread pid 14 tid 100040 ]
  122. Stopped at usbpf_xfertap+0x30: ldr r0, [r0, #0x008]
  123. db> bt
  124. Tracing pid 14 tid 100040 td 0xc26d6320
  125. db_trace_self() at db_trace_self
  126. pc = 0xc057928c lr = 0xc022bcc8 (db_stack_trace+0xf4)
  127. sp = 0xdd822a6c fp = 0xdd822a84
  128. r10 = 0xc067f990
  129. db_stack_trace() at db_stack_trace+0xf4
  130. pc = 0xc022bcc8 lr = 0xc022b634 (db_command+0x264)
  131. sp = 0xdd822a8c fp = 0xdd822b2c
  132. r4 = 0x00000000 r5 = 0x00000000
  133. r6 = 0xc05dcb1b
  134. db_command() at db_command+0x264
  135. pc = 0xc022b634 lr = 0xc022b3a4 (db_command_loop+0x60)
  136. sp = 0xdd822b34 fp = 0xdd822b44
  137. r4 = 0xc05bbbd5 r5 = 0xc05d6472
  138. r6 = 0xc082ca80 r7 = 0xdd822d64
  139. r8 = 0xdd822d64 r9 = 0xc06ca3d4
  140. r10 = 0xc067fc00
  141. db_command_loop() at db_command_loop+0x60
  142. pc = 0xc022b3a4 lr = 0xc022dda4 (db_trap+0xdc)
  143. sp = 0xdd822b4c fp = 0xdd822c6c
  144. r4 = 0x00000000 r5 = 0xdd822b54
  145. r6 = 0xc06ca3fc
  146. db_trap() at db_trap+0xdc
  147. pc = 0xc022dda4 lr = 0xc039cf20 (kdb_trap+0xd4)
  148. sp = 0xdd822c74 fp = 0xdd822c94
  149. r4 = 0x00000000 r5 = 0x00000017
  150. r6 = 0xc06ca3fc r7 = 0xdd822d64
  151. kdb_trap() at kdb_trap+0xd4
  152. pc = 0xc039cf20 lr = 0xc0588560 (dab_fatal+0x174)
  153. sp = 0xdd822c9c fp = 0xdd822cb4
  154. r4 = 0xdd822d64 r5 = 0x600000d3
  155. r6 = 0x00000008 r7 = 0x00000017
  156. r8 = 0xdd822d64 r9 = 0x00000001
  157. r10 = 0xc082dd00
  158. dab_fatal() at dab_fatal+0x174
  159. pc = 0xc0588560 lr = 0xc05883c4 ($d)
  160. sp = 0xdd822cbc fp = 0xdd822d5c
  161. r4 = 0xc25dd640 r5 = 0xc26d6320
  162. r6 = 0xc25dd6e8 r7 = 0xc06078cd
  163. $d() at $d
  164. pc = 0xc05883c4 lr = 0xc057aab8 (exception_exit)
  165. sp = 0xdd822d64 fp = 0xdd822de0
  166. r4 = 0xc2c57540 r5 = 0xc2c57540
  167. r6 = 0xc26d0394 r7 = 0x00001000
  168. r8 = 0xc2c57000 r9 = 0xc06ba000
  169. r10 = 0xc26d01b0
  170. exception_exit() at exception_exit
  171. pc = 0xc057aab8 lr = 0xc0285a80 (usbd_callback_wrapper+0x5e4)
  172. sp = 0xdd822db0 fp = 0xdd822de0
  173. r0 = 0x00000000 r1 = 0x00000001
  174. r2 = 0x0000000c r3 = 0xc26d0394
  175. r4 = 0xc2c57540 r5 = 0xc2c57540
  176. r6 = 0xc26d0394 r7 = 0x00001000
  177. r8 = 0xc2c57000 r9 = 0xc06ba000
  178. r10 = 0xc26d01b0 r12 = 0x000000c0
  179. usbpf_xfertap() at usbpf_xfertap+0x30
  180. pc = 0xc0280544 lr = 0xc0285a80 (usbd_callback_wrapper+0x5e4)
  181. sp = 0xdd822de8 fp = 0xdd822e28
  182. r4 = 0xc2c57540 r5 = 0xc2c575f3
  183. r6 = 0xc26d0394 r7 = 0x00001000
  184. r8 = 0xc2c57000 r9 = 0xc06ba000
  185. r10 = 0xc26d01b0
  186. usbd_callback_wrapper() at usbd_callback_wrapper+0x5e4
  187. pc = 0xc0285a80 lr = 0xc0286d44 (usb_command_wrapper+0x15c)
  188. sp = 0xdd822e30 fp = 0xdd822e48
  189. r4 = 0xc2c57030 r5 = 0xc06ba000
  190. r6 = 0xc05c4980 r7 = 0xc05c49a7
  191. r8 = 0x00000000 r9 = 0xc05c4994
  192. r10 = 0xc05c3f6d
  193. usb_command_wrapper() at usb_command_wrapper+0x15c
  194. pc = 0xc0286d44 lr = 0xc0285cb0 (usb_callback_proc+0x70)
  195. sp = 0xdd822e50 fp = 0xdd822e58
  196. r4 = 0xc05c4646 r5 = 0xc2c57000
  197. r6 = 0xc26d0214 r7 = 0xc2c57044
  198. r8 = 0x00000000 r9 = 0xc06ba068
  199. usb_callback_proc() at usb_callback_proc+0x70
  200. pc = 0xc0285cb0 lr = 0xc0280da4 (usb_process+0x100)
  201. sp = 0xdd822e60 fp = 0xdd822e80
  202. r4 = 0xc26d0204 r5 = 0xc26d020c
  203. usb_process() at usb_process+0x100
  204. pc = 0xc0280da4 lr = 0xc0337514 (fork_exit+0x88)
  205. sp = 0xdd822e88 fp = 0xdd822ea0
  206. r4 = 0xc26d6320 r5 = 0xc25dd640
  207. r6 = 0xc0280ca4 r7 = 0xc26d0204
  208. r8 = 0xdd822ea8 r9 = 0x00000000
  209. r10 = 0x00000000
  210. fork_exit() at fork_exit+0x88
  211. pc = 0xc0337514 lr = 0xc0587dc0 (fork_trampoline+0x14)
  212. sp = 0xdd822ea8 fp = 0x00000000
  213. r4 = 0xc0280ca4 r5 = 0xc26d0204
  214. r6 = 0xf2ffe7f0 r7 = 0x6be3e6ec
  215. r8 = 0x00000000
  216. fork_trampoline() at fork_trampoline+0x14
  217. pc = 0xc0587dc0 lr = 0xc0587dc0 (fork_trampoline+0x14)
  218. sp = 0xdd822ea8 fp = 0x00000000
  219. Unable to unwind further
  220. db>
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