btrfs: Introduce mount time chunk <-> dev extent mapping check

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This patch will introduce chunk <-> dev extent mapping check, to protect
us against invalid dev extents or chunks.

Since chunk mapping is the fundamental infrastructure of btrfs, extra
check at mount time could prevent a lot of unexpected behavior (BUG_ON).

Reported-by: Xu Wen <wen.xu@gatech.edu>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=200403
Link: https://bugzilla.kernel.org/show_bug.cgi?id=200407
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Su Yue <suy.fnst@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Qu Wenruo 2018-08-01 10:37:19 +08:00 • committed by David Sterba

parent 7ef49515fa

commit cf90d884b3

3 changed files with 193 additions and 0 deletions

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7

fs/btrfs/disk-io.c

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184

fs/btrfs/volumes.c

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2

fs/btrfs/volumes.h

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