diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-27 06:22:13 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-27 06:22:13 +0100 |
| commit | 13a44ba0dca8c133a4368323683a270a3874d88c (patch) | |
| tree | ee41cdfbf84cee2b507d7471287bdd1934f5130b /kernel/bpf/helpers.c | |
| parent | 1643281347f80116a500e6a17726351a7265a55c (diff) | |
| parent | d206a76d7d2726f3b096037f2079ce0bd3ba329b (diff) | |
Merge 6.8-rc6 into tty-next
We need the tty/serial fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/bpf/helpers.c')
| -rw-r--r-- | kernel/bpf/helpers.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index be72824f32b2..d19cd863d294 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -1101,6 +1101,7 @@ struct bpf_hrtimer { struct bpf_prog *prog; void __rcu *callback_fn; void *value; + struct rcu_head rcu; }; /* the actual struct hidden inside uapi struct bpf_timer */ @@ -1332,6 +1333,7 @@ BPF_CALL_1(bpf_timer_cancel, struct bpf_timer_kern *, timer) if (in_nmi()) return -EOPNOTSUPP; + rcu_read_lock(); __bpf_spin_lock_irqsave(&timer->lock); t = timer->timer; if (!t) { @@ -1353,6 +1355,7 @@ out: * if it was running. */ ret = ret ?: hrtimer_cancel(&t->timer); + rcu_read_unlock(); return ret; } @@ -1407,7 +1410,7 @@ out: */ if (this_cpu_read(hrtimer_running) != t) hrtimer_cancel(&t->timer); - kfree(t); + kfree_rcu(t, rcu); } BPF_CALL_2(bpf_kptr_xchg, void *, map_value, void *, ptr) |