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| author | Konstantin Belousov <kib@FreeBSD.org> | 2020-12-17 19:51:39 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2020-12-17 19:51:39 +0000 |
| commit | 551e205f6dfa469f4f32a166ee3fb691201d27a7 (patch) | |
| tree | 5d17034dc32d257c8c89e7adbe6e9f7ba2f65fef /tools | |
| parent | 0ebcbcc0efdd733b11311c840c47cc22f83c7408 (diff) | |
| download | src-test-551e205f6dfa469f4f32a166ee3fb691201d27a7.tar.gz src-test-551e205f6dfa469f4f32a166ee3fb691201d27a7.zip | |
Fix a race in tty_signal_sessleader() with unlocked read of s_leader.
Since we do not own the session lock, a parallel killjobc() might
reset s_leader to NULL after we checked it. Read s_leader only once
and ensure that compiler is not allowed to reload.
While there, make access to t_session somewhat more pretty by using
local variable.
PR: 251915
Submitted by: Jakub Piecuch <j.piecuch96@gmail.com>
MFC after: 1 week
Notes
Notes:
svn path=/head/; revision=368735
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions