Hans Petter Selasky b764a42653 There is a window where threads are removed from the process list and where ... the thread destructor is invoked. Catch that window by waiting for all task_struct allocations to be returned before freeing the UMA zone in the LinuxKPI. Else UMA may fail to release the zone due to concurrent access and panic: panic() - Bad link element prev->next != elm zone_release() bucket_drain() bucket_free() zone_dtor() zone_free_item() uma_zdestroy() linux_current_uninit() This failure can be triggered by loading and unloading the LinuxKPI module in a loop: while true do kldload linuxkpi kldunload linuxkpi done Discussed with: kib@ MFC after: 1 week Sponsored by: Mellanox Technologies // NVIDIA Networking		2021-05-21 13:18:41 +02:00
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include	Implement cdev_device_add() and cdev_device_del() in the LinuxKPI.	2021-05-11 21:00:23 +02:00
src	There is a window where threads are removed from the process list and where	2021-05-21 13:18:41 +02:00