In the Linux kernel, the following vulnerability has been resolved:

gfs2: add some missing log locking

Function gfs2_logd() calls the log flushing functions gfs2_ail1_start(),
gfs2_ail1_wait(), and gfs2_ail1_empty() without holding sdp->sd_log_flush_lock,
but these functions require exclusion against concurrent transactions.

To fix that, add a non-locking __gfs2_log_flush() function.  Then, in
gfs2_logd(), take sdp->sd_log_flush_lock before calling the above mentioned log
flushing functions and __gfs2_log_flush().

https://git.kernel.org/stable/c/3b28eb75afe520972bacc833850c2b30aa0824cd

https://git.kernel.org/stable/c/49d9be0722da3a4a893ba905720cba1921834ec3

https://git.kernel.org/stable/c/98e8bf249c790d56de1abc4a5f8bd68035a00921

https://git.kernel.org/stable/c/bf5fcd9c37c2546beaf7b401d31aefd89017dc3d

https://git.kernel.org/stable/c/ca95342cb1b39062a03c115830286f0a426053d5

https://git.kernel.org/stable/c/f2f225cf505ac016132ded21690f3ba0a080a4e8

https://git.kernel.org/stable/c/fe2c8d051150b90b3ccb85f89e3b1d636cb88ec8

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