diff options
| author | Qingfang Deng <dqfext@gmail.com> | 2025-09-25 13:10:59 +0800 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-09-30 10:10:59 +0200 |
| commit | 38b04ed7072e54086102eae2d05d03ffcdb4b695 (patch) | |
| tree | a03a601c2a8d8c446ab30e3757a2437bda6aab12 /rust/helpers/rcu.c | |
| parent | 7bd80ed89d72285515db673803b021469ba71ee8 (diff) | |
6pack: drop redundant locking and refcounting
The TTY layer already serializes line discipline operations with
tty->ldisc_sem, so the extra disc_data_lock and refcnt in 6pack
are unnecessary.
Removing them simplifies the code and also resolves a lockdep warning
reported by syzbot. The warning did not indicate a real deadlock, since
the write-side lock was only taken in process context with hardirqs
disabled.
Reported-by: syzbot+5fd749c74105b0e1b302@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/68c858b0.050a0220.3c6139.0d1c.GAE@google.com/
Signed-off-by: Qingfang Deng <dqfext@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/20250925051059.26876-1-dqfext@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'rust/helpers/rcu.c')
0 files changed, 0 insertions, 0 deletions