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Linus Torvalds 6ba0d2e4fc Fix sysfs module section output overflow 
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Merge tag 'kallsyms_show_value-fix-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull sysfs module section fix from Kees Cook:
 "Fix sysfs module section output overflow.

  About a month after my kallsyms_show_value() refactoring landed, 0day
  noticed that there was a path through the kernfs binattr read handlers
  that did not have PAGE_SIZEd buffers, and the module "sections" read
  handler made a bad assumption about this, resulting in it stomping on
  memory when reached through small-sized splice() calls.

  I've added a set of tests to find these kinds of regressions more
  quickly in the future as well"

Sefltests-acked-by: Shuah Khan <skhan@linuxfoundation.org>

* tag 'kallsyms_show_value-fix-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  selftests: splice: Check behavior of full and short splices
  module: Correctly truncate sysfs sections output
2020-08-07 13:24:58 -07:00
..
fault-injection
ktest tools/: replace HTTP links with HTTPS ones 2020-08-07 11:33:21 -07:00
kunit linux-kselftest-kunit-5.9-rc1 2020-08-05 10:07:39 -07:00
nvdimm tools/testing/nvdimm: Replace zero-length array with flexible-array 2020-06-15 23:08:32 -05:00
radix-tree SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
scatterlist
selftests Fix sysfs module section output overflow 2020-08-07 13:24:58 -07:00
vsock SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00