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commit b1e7bd5ba16ba761e9f62cdf8622436f385049c0
Author: Mike Kelly <[email protected]>
Date: Tue Feb 10 07:52:54 2026 +0000
task_terminate() relies on threads terminating in list order
Calling task_terminate() (on other than current_task()) risks deadlocking
if the task being terminated has multiple threads. Currently, the head of the
thread list must terminate successfully before terminating the next in the
list. This is not always possible, for example a thread which is not the list
head might hold a thread_reference to the thread at the list head. In that
case, the list head cannot be terminated until the other thread releases that
reference which won't happen if that other thread is TH_SUSP as it is not
rescheduled. Instead, task terminate() now attempts thread terminatation in
list sequence (rather than just the list head) and keeps doing so until none
remain.
Message-ID: <[email protected]>
-----------------------------------------------------------------------
Summary of changes:
kern/task.c | 59 +++++++++++++++++++++++++++++++++++++----------------------
1 file changed, 37 insertions(+), 22 deletions(-)
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GNU Mach
