diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 2020-07-14 14:33:07 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 2020-07-14 14:33:07 +0000 |
| commit | 3af178079cbe2efbfa4a5c1c6b27dd6296e47c08 (patch) | |
| tree | a471eda4be20da858a8cd336b1041071980e4aee /sys/dev | |
| parent | 40c32dad49745b2ea3e9f37862e029f6c228782a (diff) | |
A pty write containing VDISCARD, VREPRINT, or various retyping cases of
VERASE would perform (sometimes irrelevant) compute in the kernel which
can be heavy (especially with our insufficient tty subsystem locking). Use
tsleep_nsec for 1 tick in such circumstances to yield cpu, and also bring
interruptability to ptcwrite()
https://syzkaller.appspot.com/bug?extid=462539bc18fef8fc26cc
ok kettenis millert, discussions with greg and anton
Diffstat (limited to 'sys/dev')
0 files changed, 0 insertions, 0 deletions