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Reported in the community forum[0].
For 6.1.0, there were a few changes to the coroutine-sleep API, but
the adaptations in f376b2b ("update and rebase to QEMU v6.1.0") made
a mistake.
Currently, target_close_wait is NULL when passed to
qemu_co_sleep_ns_wakeable(), which further passes it to
qemu_co_sleep(), but there, it is dereferenced when trying to access
the 'to_wake' member:
> Thread 1 "kvm" received signal SIGSEGV, Segmentation fault.
> qemu_co_sleep (w=0x0) at ../util/qemu-coroutine-sleep.c:57
To fix it, create a proper struct and pass its address instead. Also
call qemu_co_sleep_wake unconditionally, because the NULL check (for
the 'to_wake' member) is done inside the function itself.
This patch is based on what the QEMU commits introducing the changes
to the coroutine-sleep API did to the callers in QEMU:
eaee072085 ("coroutine-sleep: allow qemu_co_sleep_wake that wakes nothing")
29a6ea24eb ("coroutine-sleep: replace QemuCoSleepState pointer with struct in the API")
[0]: https://forum.proxmox.com/threads/112130/
Tested-by: Mira Limbeck <m.limbeck@proxmox.com>
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
563c592898