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(parent: 64bef69) | patch
pidfd_poll: report POLLHUP when pid_task() == NULL
authorOleg Nesterov <oleg@redhat.com>
Fri, 2 Feb 2024 13:12:26 +0000 (14:12 +0100)
committerChristian Brauner <brauner@kernel.org>
Fri, 2 Feb 2024 13:57:53 +0000 (14:57 +0100)
commit43f0df54c96fa5abcab9df8649c1e52119bf0238
tree3233889920853f7ea8355d41d33f084dad59f799tree
parent64bef697d33b75fc06c5789b3f8108680271529fcommit | diff
pidfd_poll: report POLLHUP when pid_task() == NULL

Add another wake_up_all(wait_pidfd) into __change_pid() and change
pidfd_poll() to include EPOLLHUP if task == NULL.

This allows to wait until the target process/thread is reaped.

TODO: change do_notify_pidfd() to use the keyed wakeups.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20240202131226.GA26018@redhat.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
kernel/fork.c diff | blob | history
kernel/pid.c diff | blob | history
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