On 21.09.25 18:28, Marek Marczykowski-Górecki wrote:
Xen's do_suspend() calls dpm_suspend_start() without taking required system_transition_mutex. Since 12ffc3b1513eb moved the pm_restrict_gfp_mask() call, not taking that mutex results in a WARN.Take the mutex in do_suspend(), and use mutex_trylock() to follow how enter_state() does this. Suggested-by: Jürgen Groß <[email protected]> Fixes: 12ffc3b1513eb "PM: Restrict swap use to later in the suspend sequence" Link: https://lore.kernel.org/xen-devel/aKiBJeqsYx_4Top5@mail-itl/ Signed-off-by: Marek Marczykowski-Górecki <[email protected]> Cc: [email protected] # v6.16+
Reviewed-by: Juergen Gross <[email protected]> Juergen
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