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| author |   Suraj Jitindar Singh <surajjs@amazon.com> | 2020-02-18 19:08:50 -0800 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2020-02-21 00:38:12 -0500 |
| commit | df3da4ea5a0fc5d115c90d5aa6caa4dd433750a7 (patch) | |
| tree | f9ff3e4480025acaef8bec07cbf806a7cd6dfb2b /fs/ext4/super.c | |
| parent | ext4: fix potential race between online resizing and write operations (diff) | |
| download | linux-dev-df3da4ea5a0fc5d115c90d5aa6caa4dd433750a7.tar.xz linux-dev-df3da4ea5a0fc5d115c90d5aa6caa4dd433750a7.zip | |
ext4: fix potential race between s_group_info online resizing and access
During an online resize an array of pointers to s_group_info gets replaced
so it can get enlarged. If there is a concurrent access to the array in
ext4_get_group_info() and this memory has been reused then this can lead to
an invalid memory access.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206443
Link: https://lore.kernel.org/r/20200221053458.730016-3-tytso@mit.edu
Signed-off-by: Suraj Jitindar Singh <surajjs@amazon.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Balbir Singh <sblbir@amazon.com>
Cc: stable@kernel.org
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions