[14542] 0 14542 18312 12210 34 4 0 1000 syz-executor.1 [14595] 0 14595 18279 9491 27 3 0 1000 syz-executor.2 [14680] 0 14680 18279 8755 28 4 0 1000 syz-executor.3 INFO: rcu_preempt detected stalls on CPUs/tasks: Tasks blocked on level-0 rcu_node (CPUs 0-1): P32365 (detected by 0, t=10503 jiffies, g=72382, c=72381, q=1160) kworker/u4:57 R running task 23040 32365 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/u4:57 R running task 23040 32365 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 [14698] 0 14698 18279 9358 27 3 0 1000 syz-executor.2 [14742] 0 14742 18279 8755 28 4 0 1000 syz-executor.3 [14754] 0 14754 18279 9759 28 3 0 1000 syz-executor.2 [14832] 0 14832 18312 8757 28 4 0 1000 syz-executor.3 [14853] 0 14853 18279 10994 32 4 0 1000 syz-executor.5 [14858] 0 14858 18246 9449 27 3 0 1000 syz-executor.2 [14888] 0 14888 18246 8753 28 4 0 1000 syz-executor.3 [14912] 0 14912 18279 12846 34 4 0 1000 syz-executor.5 [15012] 0 15012 18246 8753 28 4 0 1000 syz-executor.3 [15013] 0 15013 18279 9265 30 4 0 1000 syz-executor.1 [15018] 0 15018 18246 9473 27 3 0 1000 syz-executor.2 [15054] 0 15054 18246 9498 27 3 0 1000 syz-executor.2 [15077] 0 15077 18279 9818 31 4 0 1000 syz-executor.1 [15194] 0 15194 18246 8753 28 4 0 1000 syz-executor.3 [15197] 0 15197 18279 9575 29 4 0 1000 syz-executor.0 [15229] 0 15229 18246 10118 31 4 0 1000 syz-executor.5 [15233] 0 15233 18345 10985 30 3 0 1000 syz-executor.2 [15273] 0 15273 18213 8751 28 4 0 1000 syz-executor.3 [15295] 0 15295 18246 9903 28 3 0 1000 syz-executor.2 [15304] 0 15304 18147 8743 26 4 0 1000 syz-executor.4 [15333] 0 15333 18213 8746 26 4 0 1000 syz-executor.4 [15385] 0 15385 18246 10028 28 3 0 1000 syz-executor.2 [15418] 0 15418 18279 10446 32 4 0 1000 syz-executor.1 [15438] 0 15438 18246 8706 28 4 0 1000 syz-executor.3 [15444] 0 15444 18246 8869 26 3 0 1000 syz-executor.2 [15539] 0 15539 18279 12845 34 4 0 1000 syz-executor.1 [15551] 0 15551 18246 8928 26 3 0 1000 syz-executor.2 [15586] 0 15586 18246 9901 28 3 0 1000 syz-executor.2 [15682] 0 15682 18378 11400 33 4 0 1000 syz-executor.1 [15708] 0 15708 18246 9485 27 3 0 1000 syz-executor.2 [15710] 0 15710 18279 8818 29 4 0 1000 syz-executor.5 [15770] 0 15770 18279 11392 33 4 0 1000 syz-executor.1 [15771] 0 15771 18246 10202 28 3 0 1000 syz-executor.2 [15816] 0 15816 18246 9596 30 4 0 1000 syz-executor.1 [15822] 0 15822 18246 8753 28 4 0 1000 syz-executor.3 [15830] 0 15830 18246 9501 27 3 0 1000 syz-executor.2 [15879] 0 15879 18246 9737 27 3 0 1000 syz-executor.2 [15921] 0 15921 18279 12845 34 4 0 1000 syz-executor.1 [16081] 0 16081 18246 11208 32 4 0 1000 syz-executor.1 [16104] 0 16104 18279 12846 34 4 0 1000 syz-executor.5 [16127] 0 16127 18246 8753 28 4 0 1000 syz-executor.3 [16129] 0 16129 18246 9373 27 3 0 1000 syz-executor.2 [16152] 0 16152 18279 12802 34 4 0 1000 syz-executor.5 [16189] 0 16189 18279 10124 28 3 0 1000 syz-executor.2 [16194] 0 16194 18279 12126 34 4 0 1000 syz-executor.5 [16231] 0 16231 18213 8749 27 4 0 1000 syz-executor.3 [16262] 0 16262 18246 8997 26 3 0 1000 syz-executor.2 [16333] 0 16333 18180 8745 26 4 0 1000 syz-executor.4 [16338] 0 16338 18279 8755 28 4 0 1000 syz-executor.3 [16397] 0 16397 18246 9458 27 3 0 1000 syz-executor.2 [16401] 0 16401 18246 8753 28 4 0 1000 syz-executor.3 [16415] 0 16415 18279 9607 30 4 0 1000 syz-executor.1 [16422] 0 16422 18279 9858 31 4 0 1000 syz-executor.5 [16452] 0 16452 18246 9408 27 3 0 1000 syz-executor.2 [16464] 0 16464 18279 9617 30 4 0 1000 syz-executor.1 [16465] 0 16465 18246 8753 28 4 0 1000 syz-executor.3 [16503] 0 16503 18246 9449 27 3 0 1000 syz-executor.2 [16515] 0 16515 18279 12846 34 4 0 1000 syz-executor.5 [16517] 0 16517 18246 8753 28 4 0 1000 syz-executor.3 [16556] 0 16556 18279 11777 33 4 0 1000 syz-executor.5 [16628] 0 16628 18246 9468 27 3 0 1000 syz-executor.2 [16632] 0 16632 18279 10611 32 4 0 1000 syz-executor.5 [16682] 0 16682 18279 8749 26 4 0 1000 syz-executor.4 [16686] 0 16686 18246 8753 28 4 0 1000 syz-executor.3 [16688] 0 16688 18246 9410 27 3 0 1000 syz-executor.2 [16721] 0 16721 18312 9429 30 4 0 1000 syz-executor.1 [16728] 0 16728 18246 9551 27 3 0 1000 syz-executor.0 [16775] 0 16775 18279 10664 32 4 0 1000 syz-executor.5 [16813] 0 16813 18213 8751 28 4 0 1000 syz-executor.3 [16870] 0 16870 18246 9713 27 3 0 1000 syz-executor.2 [16919] 0 16919 18312 9268 30 4 0 1000 syz-executor.5 [16926] 0 16926 18279 8722 26 3 0 1000 syz-executor.0 [16929] 0 16929 18279 11972 32 3 0 1000 syz-executor.2 [16942] 0 16942 18246 8706 28 4 0 1000 syz-executor.3 [17004] 0 17004 18279 8755 28 4 0 1000 syz-executor.3 [17061] 0 17061 18246 8753 28 4 0 1000 syz-executor.3 [17123] 0 17123 18213 8749 27 4 0 1000 syz-executor.3 [17140] 0 17140 18279 9886 28 3 0 1000 syz-executor.2 [17141] 0 17141 18279 11212 31 4 0 1000 syz-executor.0 [17217] 0 17217 18213 8751 28 4 0 1000 syz-executor.3 [17244] 0 17244 18279 12108 34 4 0 1000 syz-executor.1 [17250] 0 17250 18246 9748 28 3 0 1000 syz-executor.2 [17307] 0 17307 18279 8751 26 4 0 1000 syz-executor.4 [17319] 0 17319 18246 9848 28 3 0 1000 syz-executor.2 [17334] 0 17334 18279 9141 29 4 0 1000 syz-executor.5 [17371] 0 17371 18279 12845 34 4 0 1000 syz-executor.1 [17393] 0 17393 18246 8753 28 4 0 1000 syz-executor.3 [17435] 0 17435 18246 8753 28 4 0 1000 syz-executor.3 [17436] 0 17436 18246 10251 29 3 0 1000 syz-executor.2 [17449] 0 17449 18279 10490 32 4 0 1000 syz-executor.5 [17500] 0 17500 18246 8753 28 4 0 1000 syz-executor.3 [17505] 0 17505 18246 9379 27 3 0 1000 syz-executor.2 [17516] 0 17516 18279 9586 30 4 0 1000 syz-executor.5 [17540] 0 17540 18246 9566 29 4 0 1000 syz-executor.0 [17550] 0 17550 18246 9437 27 3 0 1000 syz-executor.2 [17557] 0 17557 18345 12402 34 4 0 1000 syz-executor.5 [17580] 0 17580 18279 9859 31 4 0 1000 syz-executor.1 [17606] 0 17606 18213 8749 27 4 0 1000 syz-executor.3 [17667] 0 17667 18279 11198 31 4 0 1000 syz-executor.0 [17700] 0 17700 18279 10050 31 4 0 1000 syz-executor.1 [17704] 0 17704 18246 10552 31 4 0 1000 syz-executor.0 [17731] 0 17731 18279 10187 31 4 0 1000 syz-executor.5 [17740] 0 17740 18213 8749 27 4 0 1000 syz-executor.3 [17751] 0 17751 18279 11780 33 4 0 1000 syz-executor.1 [17814] 0 17814 18279 9517 27 3 0 1000 syz-executor.2 [17865] 0 17865 18246 9232 27 3 0 1000 syz-executor.2 [17885] 0 17885 5365 169 15 3 0 -1000 udevd [17926] 0 17926 5365 168 15 3 0 -1000 udevd [17955] 0 17955 18246 10159 28 3 0 1000 syz-executor.2 [18002] 0 18002 18312 12171 32 3 0 1000 syz-executor.4 [18053] 0 18053 18246 8921 26 3 0 1000 syz-executor.4 [18071] 0 18071 18246 9541 27 3 0 1000 syz-executor.0 [18074] 0 18074 18246 8946 26 3 0 1000 syz-executor.2 [18114] 0 18114 18246 9344 27 3 0 1000 syz-executor.2 [18128] 0 18128 18279 12226 33 4 0 1000 syz-executor.0 [18198] 0 18198 18312 9822 28 3 0 1000 syz-executor.2 [18223] 0 18223 18279 10426 32 4 0 1000 syz-executor.1 [18254] 0 18254 18279 11452 33 4 0 1000 syz-executor.5 [18255] 0 18255 18279 10218 28 3 0 1000 syz-executor.2 [18292] 0 18292 18279 12219 34 4 0 1000 syz-executor.5 [18348] 0 18348 18246 8998 26 3 0 1000 syz-executor.3 [18391] 0 18391 18279 9411 27 3 0 1000 syz-executor.2