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qemu / qemu / 7094f12f868fc1b75b105bcc676e15964dab77af
commit7094f12f868fc1b75b105bcc676e15964dab77af[log] [tgz]
authorKevin Wolf <kwolf@redhat.com>Wed Apr 11 11:06:37 2012 +0200
committerKevin Wolf <kwolf@redhat.com>Thu Apr 19 15:48:52 2012 +0200
treeb5e8acc8d3280beedb9c30d6edf9f9bfac39a29e
parentaafcdcc9ebd72b24bf8686f624ff98bb919de5fd [diff]
block: Drain requests in bdrv_close

If an AIO request is in flight that refers to a BlockDriverState that
has been closed and possibly even freed, more or less anything could
happen. I have seen segfaults, -EBADF return values and qcow2 sometimes
actually catches the situation in bdrv_close() and abort()s.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
1 file changed
tree: b5e8acc8d3280beedb9c30d6edf9f9bfac39a29e
  1. audio/
  2. block/
  3. bsd-user/
  4. darwin-user/
  5. default-configs/
  6. docs/
  7. fpu/
  8. fsdev/
  9. gdb-xml/
  10. hw/
  11. include/
  12. libcacard/
  13. linux-headers/
  14. linux-user/
  15. net/
  16. pc-bios/
  17. qapi/
  18. qga/
  19. QMP/
  20. qom/
  21. roms/
  22. scripts/
  23. slirp/
  24. sysconfigs/
  25. target-alpha/
  26. target-arm/
  27. target-cris/
  28. target-i386/
  29. target-lm32/
  30. target-m68k/
  31. target-microblaze/
  32. target-mips/
  33. target-ppc/
  34. target-s390x/
  35. target-sh4/
  36. target-sparc/
  37. target-unicore32/
  38. target-xtensa/
  39. tcg/
  40. tests/
  41. trace/
  42. ui/
  43. .gitignore
  44. .gitmodules
  45. .mailmap
  46. a.out.h
  47. acl.c
  48. acl.h
  49. aes.c
  50. aes.h
  51. aio.c
  52. alpha-dis.c
  53. alpha.ld
  54. arch_init.c
  55. arch_init.h
  56. arm-dis.c
  57. arm-semi.c
  58. arm.ld
  59. async.c
  60. balloon.c
  61. balloon.h
  62. bitmap.c
  63. bitmap.h
  64. bitops.c
  65. bitops.h
  66. block-migration.c
  67. block-migration.h
  68. block.c
  69. block.h
  70. block_int.h
  71. blockdev.c
  72. blockdev.h
  73. bswap.h
  74. bt-host.c
  75. bt-host.h
  76. bt-vhci.c
  77. buffered_file.c
  78. buffered_file.h
  79. cache-utils.c
  80. cache-utils.h
  81. Changelog
  82. cmd.c
  83. cmd.h
  84. CODING_STYLE
  85. compatfd.c
  86. compatfd.h
  87. compiler.h
  88. config.h
  89. configure
  90. console.c
  91. console.h
  92. COPYING
  93. COPYING.LIB
  94. coroutine-gthread.c
  95. coroutine-sigaltstack.c
  96. coroutine-ucontext.c
  97. coroutine-win32.c
  98. cpu-all.h
  99. cpu-common.h
  100. cpu-defs.h
  101. cpu-exec.c
  102. cpus.c
  103. cpus.h
  104. cris-dis.c
  105. cursor.c
  106. cursor_hidden.xpm
  107. cursor_left_ptr.xpm
  108. cutils.c
  109. def-helper.h
  110. device_tree.c
  111. device_tree.h
  112. dis-asm.h
  113. disas.c
  114. disas.h
  115. dma-helpers.c
  116. dma.h
  117. dyngen-exec.h
  118. elf.h
  119. envlist.c
  120. envlist.h
  121. error.c
  122. error.h
  123. error_int.h
  124. event_notifier.c
  125. event_notifier.h
  126. exec-all.h
  127. exec-memory.h
  128. exec-obsolete.h
  129. exec.c
  130. gdbstub.c
  131. gdbstub.h
  132. gen-icount.h
  133. HACKING
  134. hmp-commands.hx
  135. hmp.c
  136. hmp.h
  137. host-utils.c
  138. host-utils.h
  139. hppa-dis.c
  140. hppa.ld
  141. i386-dis.c
  142. i386.ld
  143. ia64-dis.c
  144. ia64.ld
  145. input.c
  146. int128.h
  147. iohandler.c
  148. ioport-user.c
  149. ioport.c
  150. ioport.h
  151. iorange.h
  152. iov.c
  153. iov.h
  154. json-lexer.c
  155. json-lexer.h
  156. json-parser.c
  157. json-parser.h
  158. json-streamer.c
  159. json-streamer.h
  160. kvm-all.c
  161. kvm-stub.c
  162. kvm.h
  163. libfdt_env.h
  164. LICENSE
  165. linux-aio.c
  166. lm32-dis.c
  167. m68k-dis.c
  168. m68k-semi.c
  169. m68k.ld
  170. main-loop.c
  171. main-loop.h
  172. MAINTAINERS
  173. Makefile
  174. Makefile.dis
  175. Makefile.hw
  176. Makefile.objs
  177. Makefile.target
  178. Makefile.user
  179. memory.c
  180. memory.h
  181. microblaze-dis.c
  182. migration-exec.c
  183. migration-fd.c
  184. migration-tcp.c
  185. migration-unix.c
  186. migration.c
  187. migration.h
  188. mips-dis.c
  189. mips.ld
  190. module.c
  191. module.h
  192. monitor.c
  193. monitor.h
  194. nbd.c
  195. nbd.h
  196. net.c
  197. net.h
  198. notify.c
  199. notify.h
  200. os-posix.c
  201. os-win32.c
  202. osdep.c
  203. osdep.h
  204. oslib-posix.c
  205. oslib-win32.c
  206. path.c
  207. pci-ids.txt
  208. pflib.c
  209. pflib.h
  210. poison.h
  211. posix-aio-compat.c
  212. ppc-dis.c
  213. ppc.ld
  214. ppc64.ld
  215. qapi-schema-guest.json
  216. qapi-schema-test.json
  217. qapi-schema.json
  218. qbool.c
  219. qbool.h
  220. qdict-test-data.txt
  221. qdict.c
  222. qdict.h
  223. qemu-aio.h
  224. qemu-barrier.h
  225. qemu-bridge-helper.c
  226. qemu-char.c
  227. qemu-char.h
  228. qemu-common.h
  229. qemu-config.c
  230. qemu-config.h
  231. qemu-coroutine-int.h
  232. qemu-coroutine-io.c
  233. qemu-coroutine-lock.c
  234. qemu-coroutine-sleep.c
  235. qemu-coroutine.c
  236. qemu-coroutine.h
  237. qemu-doc.texi
  238. qemu-error.c
  239. qemu-error.h
  240. qemu-file.h
  241. qemu-ga.c
  242. qemu-img-cmds.hx
  243. qemu-img.c
  244. qemu-img.texi
  245. qemu-io.c
  246. qemu-lock.h
  247. qemu-log.h
  248. qemu-nbd.c
  249. qemu-nbd.texi
  250. qemu-objects.h
  251. qemu-option.c
  252. qemu-option.h
  253. qemu-options-wrapper.h
  254. qemu-options.h
  255. qemu-options.hx
  256. qemu-os-posix.h
  257. qemu-os-win32.h
  258. qemu-progress.c
  259. qemu-queue.h
  260. qemu-sockets.c
  261. qemu-tech.texi
  262. qemu-thread-posix.c
  263. qemu-thread-posix.h
  264. qemu-thread-win32.c
  265. qemu-thread-win32.h
  266. qemu-thread.h
  267. qemu-timer-common.c
  268. qemu-timer.c
  269. qemu-timer.h
  270. qemu-tls.h
  271. qemu-tool.c
  272. qemu-user.c
  273. qemu-x509.h
  274. qemu-xattr.h
  275. qemu.sasl
  276. qemu_socket.h
  277. qerror.c
  278. qerror.h
  279. qfloat.c
  280. qfloat.h
  281. qint.c
  282. qint.h
  283. qjson.c
  284. qjson.h
  285. qlist.c
  286. qlist.h
  287. qmp-commands.hx
  288. qmp.c
  289. qobject.h
  290. qstring.c
  291. qstring.h
  292. qtest.c
  293. qtest.h
  294. range.h
  295. readline.c
  296. readline.h
  297. README
  298. rules.mak
  299. s390-dis.c
  300. s390.ld
  301. savevm.c
  302. sh4-dis.c
  303. softmmu-semi.h
  304. softmmu_defs.h
  305. softmmu_exec.h
  306. softmmu_header.h
  307. softmmu_template.h
  308. sparc-dis.c
  309. sparc.ld
  310. sparc64.ld
  311. spice-qemu-char.c
  312. sysemu.h
  313. targphys.h
  314. tcg-runtime.c
  315. tci-dis.c
  316. tci.c
  317. thunk.c
  318. thunk.h
  319. TODO
  320. trace-events
  321. translate-all.c
  322. uboot_image.h
  323. user-exec.c
  324. VERSION
  325. version.rc
  326. vgafont.h
  327. vl.c
  328. vmstate.h
  329. x86_64.ld
  330. xen-all.c
  331. xen-mapcache.c
  332. xen-mapcache.h
  333. xen-stub.c
  334. xtensa-semi.c