On Thu, Nov 27, 2025 at 11:55:54AM +0530, Borah, Chaitanya Kumar wrote: > Hello Christian, > > This is Chaitanya (again!). > > This mail is regarding another regression we are seeing in our CI runs[1] on > drm-tip (with both xe and i915). > > ````````````````````````````````````````````````````````````````````````````````` > <4> [157.687644] ------------[ cut here ]------------ > <4> [157.687768] WARNING: CPU: 5 PID: 2277 at kernel/freezer.c:139 > __set_task_frozen+0x7f/0xb0 > ... > <4> [157.687923] PKRU: 55555554 > <4> [157.687924] Call Trace: > <4> [157.687925] <TASK> > <4> [157.687926] ? __pfx___set_task_frozen+0x10/0x10 > <4> [157.687929] task_call_func+0x6d/0x120 > <4> [157.687932] ? cgroup_freezing+0x89/0x200 > <4> [157.687937] freeze_task+0x98/0x100 > <4> [157.687940] try_to_freeze_tasks+0xd2/0x440 > <4> [157.687946] freeze_processes+0x56/0xd0 > <4> [157.687948] hibernate+0x129/0x4a0 > <4> [157.687951] state_store+0xd3/0xe0 > <4> [157.687954] kobj_attr_store+0x12/0x40 > <4> [157.687959] sysfs_kf_write+0x4d/0x80 > <4> [157.687963] kernfs_fop_write_iter+0x188/0x240 > <4> [157.687967] vfs_write+0x283/0x540 > <4> [157.687969] ? free_to_partial_list+0x46d/0x640 > <4> [157.687976] ksys_write+0x6f/0xf0 > <4> [157.687980] __x64_sys_write+0x19/0x30 > <4> [157.687982] x64_sys_call+0x79/0x26a0 > <4> [157.687984] do_syscall_64+0x93/0xd60 > <4> [157.687987] ? putname+0x65/0x90 > <4> [157.687990] ? kmem_cache_free+0x553/0x680 > <4> [157.687995] ? putname+0x65/0x90 > <4> [157.687997] ? putname+0x65/0x90 > <4> [157.687999] ? do_sys_openat2+0x8b/0xd0 > <4> [157.688003] ? __x64_sys_openat+0x54/0xa0 > <4> [157.688007] ? do_syscall_64+0x1b7/0xd60 > <4> [157.688009] ? __fput+0x1bf/0x2f0 > <4> [157.688012] ? fput_close_sync+0x3d/0xa0 > <4> [157.688015] ? __x64_sys_close+0x3e/0x90 > <4> [157.688017] ? do_syscall_64+0x1b7/0xd60 > <4> [157.688019] ? putname+0x65/0x90 > <4> [157.688021] ? putname+0x65/0x90 > <4> [157.688023] ? do_sys_openat2+0x8b/0xd0 > <4> [157.688024] ? __fput+0x1bf/0x2f0 > <4> [157.688028] ? __x64_sys_openat+0x54/0xa0 > <4> [157.688032] ? do_syscall_64+0x1b7/0xd60 > <4> [157.688034] ? do_syscall_64+0x1b7/0xd60 > <4> [157.688036] ? irqentry_exit+0x77/0xb0 > <4> [157.688038] ? exc_page_fault+0xbd/0x2c0 > <4> [157.688042] entry_SYSCALL_64_after_hwframe+0x76/0x7e > <4> [157.688044] RIP: 0033:0x72523c91c574 > ````````````````````````````````````````````````````````````````````````````````` > Details log can be found in [2]. > > After bisecting the tree, the following patch [3] seems to be the first > "bad" commit > > ````````````````````````````````````````````````````````````````````````````````````````````````````````` > commit a3f8f8662771285511ae26c4c8d3ba1cd22159b9 > Author: Christian Brauner <[email protected]> > Date: Wed Nov 5 14:39:45 2025 +0100 > > power: always freeze efivarfs > ````````````````````````````````````````````````````````````````````````````````````````````````````````` > > We also verified that if we revert the patch the issue is not seen. > > Could you please check why the patch causes this regression and provide a > fix if necessary?
I'm going to send a fix for this to Linus today. Thanks! Rafael has sent me fix earlier this week.
