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ext4: check mount's handling for very large s_first_meta_bg

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On ext4 filesystem, the kernel carshes at mount time when
s_first_meta_bg's value exceeds the largest possible meta_bg
number.  This kernel bug has been fixed in:

3a4b77c ext4: validate s_first_meta_bg at mount time

[eguan: add comments on the first_meta_bg value]

Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
This commit is contained in:
Xiao Yang
2017-04-21 18:10:39 +08:00
committed by Eryu Guan
parent 3501b86c9d
commit 427db760cf
3 changed files with 70 additions and 0 deletions
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tests/ext4/group
+1
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@@ -27,6 +27,7 @@
022 auto quick attr dangerous
023 auto quick scrub
024 auto quick encrypt dangerous
025 auto quick fuzzers dangerous
271 auto rw quick
301 aio auto ioctl rw stress defrag
302 aio auto ioctl rw stress defrag