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author | Paul E. McKenney <paulmck@kernel.org> | 2021-05-25 10:12:45 -0700 |
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committer | Paul E. McKenney <paulmck@kernel.org> | 2021-07-06 12:38:21 -0700 |
commit | 1d10bf55d85d34eb73dd8263635f43fd72135d2d (patch) | |
tree | 098a4e33b5347ac9c22257dc313f2b5528c982e6 /fs/cifs/smb2proto.h | |
parent | 05bc276cf243d90b9f1eb6ae2962f41eeb53a741 (diff) | |
download | linux-1d10bf55d85d34eb73dd8263635f43fd72135d2d.tar.bz2 |
rcu-tasks: Don't delete holdouts within trc_inspect_reader()
As Yanfei pointed out, although invoking trc_del_holdout() is safe
from the viewpoint of the integrity of the holdout list itself,
the put_task_struct() invoked by trc_del_holdout() can result in
use-after-free errors due to later accesses to this task_struct structure
by the RCU Tasks Trace grace-period kthread.
This commit therefore removes this call to trc_del_holdout() from
trc_inspect_reader() in favor of the grace-period thread's existing call
to trc_del_holdout(), thus eliminating that particular class of
use-after-free errors.
Reported-by: "Xu, Yanfei" <yanfei.xu@windriver.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'fs/cifs/smb2proto.h')
0 files changed, 0 insertions, 0 deletions