[30528] 0 30528 18246 8965 27 4 0 1000 syz-executor.2 [30574] 0 30574 18246 9608 27 4 0 1000 syz-executor.4 [30578] 0 30578 18246 9510 27 4 0 1000 syz-executor.3 INFO: rcu_preempt detected stalls on CPUs/tasks: Tasks blocked on level-0 rcu_node (CPUs 0-1): P9971 (detected by 0, t=10502 jiffies, g=71585, c=71584, q=357) kworker/u4:0 R running task 22832 9971 2 0x80000000 Workqueue: events_unbound call_usermodehelper_exec_work Call Trace: preempt_schedule_common+0x4f/0xd0 kernel/sched/core.c:3579 ___preempt_schedule+0x16/0x18 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock+0x3b/0x40 kernel/locking/spinlock.c:184 spin_unlock include/linux/spinlock.h:357 [inline] task_unlock include/linux/sched/task.h:136 [inline] dump_tasks mm/oom_kill.c:403 [inline] dump_header+0x7bb/0x848 mm/oom_kill.c:428 oom_kill_process.cold+0x10/0xde6 mm/oom_kill.c:861 out_of_memory mm/oom_kill.c:1084 [inline] out_of_memory+0x2d2/0xab0 mm/oom_kill.c:1023 __alloc_pages_may_oom mm/page_alloc.c:3415 [inline] __alloc_pages_slowpath mm/page_alloc.c:4112 [inline] __alloc_pages_nodemask+0x1988/0x2370 mm/page_alloc.c:4277 __alloc_pages include/linux/gfp.h:484 [inline] __alloc_pages_node include/linux/gfp.h:497 [inline] alloc_pages_node include/linux/gfp.h:511 [inline] alloc_thread_stack_node kernel/fork.c:243 [inline] dup_task_struct kernel/fork.c:529 [inline] copy_process.part.0+0x2c9/0x66c0 kernel/fork.c:1729 copy_process kernel/fork.c:1679 [inline] _do_fork+0x197/0xce0 kernel/fork.c:2220 kernel_thread+0x2f/0x40 kernel/fork.c:2284 call_usermodehelper_exec_sync kernel/umh.c:123 [inline] call_usermodehelper_exec_work+0xa7/0x230 kernel/umh.c:175 process_one_work+0x7f1/0x1580 kernel/workqueue.c:2134 worker_thread+0xdd/0xdf0 kernel/workqueue.c:2271 kthread+0x31f/0x430 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:404 kworker/u4:0 R running task 22832 9971 2 0x80000000 Workqueue: events_unbound call_usermodehelper_exec_work Call Trace: preempt_schedule_common+0x4f/0xd0 kernel/sched/core.c:3579 ___preempt_schedule+0x16/0x18 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock+0x3b/0x40 kernel/locking/spinlock.c:184 spin_unlock include/linux/spinlock.h:357 [inline] task_unlock include/linux/sched/task.h:136 [inline] dump_tasks mm/oom_kill.c:403 [inline] dump_header+0x7bb/0x848 mm/oom_kill.c:428 oom_kill_process.cold+0x10/0xde6 mm/oom_kill.c:861 out_of_memory mm/oom_kill.c:1084 [inline] out_of_memory+0x2d2/0xab0 mm/oom_kill.c:1023 __alloc_pages_may_oom mm/page_alloc.c:3415 [inline] __alloc_pages_slowpath mm/page_alloc.c:4112 [inline] __alloc_pages_nodemask+0x1988/0x2370 mm/page_alloc.c:4277 __alloc_pages include/linux/gfp.h:484 [inline] __alloc_pages_node include/linux/gfp.h:497 [inline] alloc_pages_node include/linux/gfp.h:511 [inline] alloc_thread_stack_node kernel/fork.c:243 [inline] dup_task_struct kernel/fork.c:529 [inline] copy_process.part.0+0x2c9/0x66c0 kernel/fork.c:1729 copy_process kernel/fork.c:1679 [inline] _do_fork+0x197/0xce0 kernel/fork.c:2220 kernel_thread+0x2f/0x40 kernel/fork.c:2284 call_usermodehelper_exec_sync kernel/umh.c:123 [inline] call_usermodehelper_exec_work+0xa7/0x230 kernel/umh.c:175 process_one_work+0x7f1/0x1580 kernel/workqueue.c:2134 worker_thread+0xdd/0xdf0 kernel/workqueue.c:2271 kthread+0x31f/0x430 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:404 [30579] 0 30579 18280 12842 34 4 0 1000 syz-executor.2 [30583] 0 30583 18280 12563 33 4 0 1000 syz-executor.5 [30596] 0 30596 18246 9706 27 4 0 1000 syz-executor.3 [30598] 0 30598 18247 8979 26 4 0 1000 syz-executor.4 [30612] 0 30612 18246 9535 27 4 0 1000 syz-executor.3 [30624] 0 30624 18247 9363 27 4 0 1000 syz-executor.4 [30652] 0 30652 18247 10104 28 4 0 1000 syz-executor.4 [30656] 0 30656 18280 12552 34 4 0 1000 syz-executor.2 [30668] 0 30668 18246 9767 27 4 0 1000 syz-executor.4 [30686] 0 30686 18247 9980 28 4 0 1000 syz-executor.4 [30713] 0 30713 18247 12841 33 4 0 1000 syz-executor.3 [30719] 0 30719 18280 12227 33 4 0 1000 syz-executor.2 [30734] 0 30734 18247 9035 26 4 0 1000 syz-executor.4 [30744] 0 30744 18280 12843 33 4 0 1000 syz-executor.5 [30765] 0 30765 18279 9094 27 4 0 1000 syz-executor.2 [30782] 0 30782 18246 9178 27 4 0 1000 syz-executor.2 [30784] 0 30784 18246 9361 27 4 0 1000 syz-executor.4 [30786] 0 30786 18246 9302 27 4 0 1000 syz-executor.3 [30820] 0 30820 18280 9065 26 4 0 1000 syz-executor.4 [30822] 0 30822 18280 12843 33 4 0 1000 syz-executor.5 [30861] 0 30861 18247 12841 33 4 0 1000 syz-executor.3 [30867] 0 30867 18247 8800 26 4 0 1000 syz-executor.4 [30874] 0 30874 18214 8747 26 4 0 1000 syz-executor.5 [30895] 0 30895 18247 12840 34 4 0 1000 syz-executor.2 [30908] 0 30908 18247 9884 28 4 0 1000 syz-executor.3 [30925] 0 30925 18247 9785 28 4 0 1000 syz-executor.3 [30949] 0 30949 18247 12842 33 4 0 1000 syz-executor.3 [30963] 0 30963 18247 12841 33 4 0 1000 syz-executor.5 [30976] 0 30976 18247 9345 28 4 0 1000 syz-executor.2 [30999] 0 30999 18280 9224 26 4 0 1000 syz-executor.4 [31022] 0 31022 18247 12842 33 4 0 1000 syz-executor.5 [31042] 0 31042 18279 8876 27 4 0 1000 syz-executor.2 [31066] 0 31066 18214 9245 26 4 0 1000 syz-executor.4 [31091] 0 31091 18214 9252 26 4 0 1000 syz-executor.4 [31116] 0 31116 18247 11671 31 4 0 1000 syz-executor.5 [31131] 0 31131 18213 9014 26 4 0 1000 syz-executor.4 [31134] 0 31134 18246 9188 27 4 0 1000 syz-executor.2 [31156] 0 31156 18280 10807 31 4 0 1000 syz-executor.2 [31198] 0 31198 18214 8950 26 4 0 1000 syz-executor.4 [31231] 0 31231 18247 12841 33 4 0 1000 syz-executor.3 [31272] 0 31272 18280 8750 26 4 0 1000 syz-executor.5 [31282] 0 31282 18247 12842 33 4 0 1000 syz-executor.3 [31337] 0 31337 18246 9083 27 4 0 1000 syz-executor.2 [31355] 0 31355 18214 8747 26 4 0 1000 syz-executor.5 [31357] 0 31357 18214 8746 26 4 0 1000 syz-executor.4 [31362] 0 31362 18247 12842 33 4 0 1000 syz-executor.3 [31365] 0 31365 18247 12841 34 4 0 1000 syz-executor.2 [31411] 0 31411 18247 12732 34 4 0 1000 syz-executor.2 [31473] 0 31473 18247 12841 34 4 0 1000 syz-executor.2 [31494] 0 31494 18214 8745 26 4 0 1000 syz-executor.4 [31512] 0 31512 18214 8745 26 4 0 1000 syz-executor.4 [31523] 0 31523 18247 12842 33 4 0 1000 syz-executor.3 [31530] 0 31530 18214 8745 26 4 0 1000 syz-executor.4 [31571] 0 31571 18181 8745 26 4 0 1000 syz-executor.5 [31637] 0 31637 18214 12839 33 4 0 1000 syz-executor.5 [31689] 0 31689 18214 8746 26 4 0 1000 syz-executor.4 [31705] 0 31705 18213 8746 26 4 0 1000 syz-executor.4 [31796] 0 31796 18214 12839 33 4 0 1000 syz-executor.5