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| author | Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com> | 2025-09-21 18:28:47 +0200 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2025-09-22 10:16:55 +0200 |
| commit | 9d52b0b41be5b932a0a929c10038f1bb04af4ca5 (patch) | |
| tree | 3a53a675f76279647f65014f632bb76e98404927 /rust/helpers/helpers.c | |
| parent | f770c3d858687252f1270265ba152d5c622e793f (diff) | |
xen: take system_transition_mutex on suspend
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 <jgross@suse.com>
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 <marmarek@invisiblethingslab.com>
Cc: stable@vger.kernel.org # v6.16+
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Message-ID: <20250921162853.223116-1-marmarek@invisiblethingslab.com>
Diffstat (limited to 'rust/helpers/helpers.c')
0 files changed, 0 insertions, 0 deletions