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Verify that we report ENOENT when userspace tries to create a
thread-group leader pidfd for a thread pidfd that isn't a thread-group
leader.
Link: https://lore.kernel.org/r/20250403-work-pidfd-fixes-v1-4-a123b6ed6716@kernel.org
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Adapt to changes in commit 9133607de37a ("exit: fix the usage of
delay_group_leader->exit_code in do_notify_parent() and pidfs_exit()").
Even if the thread-group leader exited early and succesfully it's exit
status will only be reported once the whole thread-group has exited and
it will share the exit code of the thread-group. So if the thread-group
was SIGKILLed the thread-group leader will also be reported as having
been SIGKILLed.
Link: https://lore.kernel.org/r/20250403-work-pidfd-fixes-v1-1-a123b6ed6716@kernel.org
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Ensure that during a multi-threaded exec and premature thread-group
leader exit no exit notification is generated.
Link: https://lore.kernel.org/r/20250320-work-pidfs-thread_group-v4-4-da678ce805bf@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Ensure that during a multi-threaded exec and premature thread-group
leader exit no exit notification is generated.
Link: https://lore.kernel.org/r/20250320-work-pidfs-thread_group-v4-3-da678ce805bf@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add first test for premature thread-group leader exit.
Link: https://lore.kernel.org/r/20250320-work-pidfs-thread_group-v4-2-da678ce805bf@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add a selftest for PIDFD_INFO_EXIT behavior.
Link: https://lore.kernel.org/r/20250305-work-pidfs-kill_on_last_close-v3-16-c8c3d8361705@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add a selftest for PIDFD_INFO_EXIT behavior.
Link: https://lore.kernel.org/r/20250305-work-pidfs-kill_on_last_close-v3-15-c8c3d8361705@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add a selftest for PIDFD_INFO_EXIT behavior.
Link: https://lore.kernel.org/r/20250305-work-pidfs-kill_on_last_close-v3-14-c8c3d8361705@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add a selftest for PIDFD_INFO_EXIT behavior.
Link: https://lore.kernel.org/r/20250305-work-pidfs-kill_on_last_close-v3-13-c8c3d8361705@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add a selftest for PIDFD_INFO_EXIT behavior.
Link: https://lore.kernel.org/r/20250305-work-pidfs-kill_on_last_close-v3-12-c8c3d8361705@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add a selftest for PIDFD_INFO_EXIT behavior.
Link: https://lore.kernel.org/r/20250305-work-pidfs-kill_on_last_close-v3-11-c8c3d8361705@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add a selftest for PIDFD_INFO_EXIT behavior.
Link: https://lore.kernel.org/r/20250305-work-pidfs-kill_on_last_close-v3-10-c8c3d8361705@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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