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| author | Bernd Edlinger <bernd.edlinger@hotmail.de> | 2020-03-20 23:27:24 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-01 14:17:48 +0300 |
| commit | 4301db49e5569fbb729769bfaf9b21b858330543 (patch) | |
| tree | 4692e79595da237a47914e85491d007862ba9825 /fs/jfs/jfs_extent.h | |
| parent | 0cd97836869e9792cd66a2223b978f0148b46a12 (diff) | |
| download | linux-4301db49e5569fbb729769bfaf9b21b858330543.tar.xz | |
proc: Use new infrastructure to fix deadlocks in execve
[ Upstream commit 2db9dbf71bf98d02a0bf33e798e5bfd2a9944696 ]
This changes lock_trace to use the new exec_update_mutex
instead of cred_guard_mutex.
This fixes possible deadlocks when the trace is accessing
/proc/$pid/stack for instance.
This should be safe, as the credentials are only used for reading,
and task->mm is updated on execve under the new exec_update_mutex.
Signed-off-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/jfs/jfs_extent.h')
0 files changed, 0 insertions, 0 deletions