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qemu / qemu / f9e98e5d7a67367b862941e339a98b8322fa0cea
commitf9e98e5d7a67367b862941e339a98b8322fa0cea[log] [tgz]
authorStefano Stabellini <stefano.stabellini@eu.citrix.com>Fri Dec 18 15:09:58 2015 +0000
committerStefano Stabellini <stefano.stabellini@eu.citrix.com>Fri Dec 18 15:09:58 2015 +0000
tree8139588be82cb11f0f6d0720833d577db7b57f07
parent18f49881cf8359e89396aac12f5d3cf3f8a632ba [diff]
xen/blkif: Avoid double access to src->nr_segments

src is stored in shared memory and src->nr_segments is dereferenced
twice at the end of the function.  If a compiler decides to compile this
into two separate memory accesses then the size limitation could be
bypassed.

Fix it by removing the double access to src->nr_segments.

This is part of XSA-155.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
1 file changed
tree: 8139588be82cb11f0f6d0720833d577db7b57f07
  1. audio/
  2. backends/
  3. block/
  4. bsd-user/
  5. contrib/
  6. crypto/
  7. default-configs/
  8. disas/
  9. docs/
  10. fpu/
  11. fsdev/
  12. gdb-xml/
  13. hw/
  14. include/
  15. io/
  16. libdecnumber/
  17. linux-headers/
  18. linux-user/
  19. migration/
  20. net/
  21. pc-bios/
  22. po/
  23. qapi/
  24. qga/
  25. qobject/
  26. qom/
  27. replay/
  28. roms/
  29. scripts/
  30. slirp/
  31. stubs/
  32. target-alpha/
  33. target-arm/
  34. target-cris/
  35. target-i386/
  36. target-lm32/
  37. target-m68k/
  38. target-microblaze/
  39. target-mips/
  40. target-moxie/
  41. target-openrisc/
  42. target-ppc/
  43. target-s390x/
  44. target-sh4/
  45. target-sparc/
  46. target-tilegx/
  47. target-tricore/
  48. target-unicore32/
  49. target-xtensa/
  50. tcg/
  51. tests/
  52. trace/
  53. ui/
  54. util/
  55. dtc
  56. pixman
  57. .dir-locals.el
  58. .exrc
  59. .gitignore
  60. .gitmodules
  61. .mailmap
  62. .travis.yml
  63. accel.c
  64. aio-posix.c
  65. aio-win32.c
  66. arch_init.c
  67. async.c
  68. balloon.c
  69. block.c
  70. blockdev-nbd.c
  71. blockdev.c
  72. blockjob.c
  73. bootdevice.c
  74. bt-host.c
  75. bt-vhci.c
  76. Changelog
  77. CODING_STYLE
  78. configure
  79. COPYING
  80. COPYING.LIB
  81. cpu-exec-common.c
  82. cpu-exec.c
  83. cpus.c
  84. cputlb.c
  85. device-hotplug.c
  86. device_tree.c
  87. disas.c
  88. dma-helpers.c
  89. dump.c
  90. exec.c
  91. gdbstub.c
  92. HACKING
  93. hmp-commands-info.hx
  94. hmp-commands.hx
  95. hmp.c
  96. hmp.h
  97. iohandler.c
  98. ioport.c
  99. iothread.c
  100. kvm-all.c
  101. kvm-stub.c
  102. LICENSE
  103. main-loop.c
  104. MAINTAINERS
  105. Makefile
  106. Makefile.objs
  107. Makefile.target
  108. memory.c
  109. memory_mapping.c
  110. module-common.c
  111. monitor.c
  112. nbd.c
  113. numa.c
  114. os-posix.c
  115. os-win32.c
  116. page_cache.c
  117. qapi-schema.json
  118. qdev-monitor.c
  119. qdict-test-data.txt
  120. qemu-bridge-helper.c
  121. qemu-char.c
  122. qemu-doc.texi
  123. qemu-ga.texi
  124. qemu-img-cmds.hx
  125. qemu-img.c
  126. qemu-img.texi
  127. qemu-io-cmds.c
  128. qemu-io.c
  129. qemu-log.c
  130. qemu-nbd.c
  131. qemu-nbd.texi
  132. qemu-options-wrapper.h
  133. qemu-options.h
  134. qemu-options.hx
  135. qemu-seccomp.c
  136. qemu-tech.texi
  137. qemu-timer.c
  138. qemu.nsi
  139. qemu.sasl
  140. qjson.c
  141. qmp-commands.hx
  142. qmp.c
  143. qtest.c
  144. README
  145. rules.mak
  146. softmmu_template.h
  147. spice-qemu-char.c
  148. tcg-runtime.c
  149. tci.c
  150. thread-pool.c
  151. thunk.c
  152. tpm.c
  153. trace-events
  154. translate-all.c
  155. translate-all.h
  156. translate-common.c
  157. user-exec.c
  158. VERSION
  159. version.rc
  160. vl.c
  161. xen-common-stub.c
  162. xen-common.c
  163. xen-hvm-stub.c
  164. xen-hvm.c
  165. xen-mapcache.c