[28721] 0 28721 18213 8808 26 4 0 1000 syz-executor.0 [28728] 0 28728 18147 8728 25 3 0 0 syz-executor.1 [28731] 0 28731 18147 8727 25 3 0 0 syz-executor.4 INFO: rcu_preempt detected stalls on CPUs/tasks: Tasks blocked on level-0 rcu_node (CPUs 0-1): P1792 (detected by 0, t=10502 jiffies, g=88701, c=88700, q=1754) syz-fuzzer R running task 26848 1792 1782 0x00000000 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] __page_cache_alloc include/linux/pagemap.h:226 [inline] pagecache_get_page+0x246/0x7e0 mm/filemap.c:1517 filemap_fault+0x8da/0x18a0 mm/filemap.c:2518 ext4_filemap_fault+0x84/0xb0 fs/ext4/inode.c:6233 __do_fault+0x100/0x380 mm/memory.c:3223 do_read_fault mm/memory.c:3633 [inline] do_fault mm/memory.c:3759 [inline] handle_pte_fault mm/memory.c:3989 [inline] __handle_mm_fault+0x9bf/0x2700 mm/memory.c:4113 handle_mm_fault+0x2f1/0x6da mm/memory.c:4150 __do_page_fault+0x477/0xbb0 arch/x86/mm/fault.c:1420 page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1122 RIP: 2fa6db98: (null) RSP: 89bda0:000000c42fa6da90 EFLAGS: c42fa6db98 syz-fuzzer R running task 26848 1792 1782 0x00000000 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] __page_cache_alloc include/linux/pagemap.h:226 [inline] pagecache_get_page+0x246/0x7e0 mm/filemap.c:1517 filemap_fault+0x8da/0x18a0 mm/filemap.c:2518 ext4_filemap_fault+0x84/0xb0 fs/ext4/inode.c:6233 __do_fault+0x100/0x380 mm/memory.c:3223 do_read_fault mm/memory.c:3633 [inline] do_fault mm/memory.c:3759 [inline] handle_pte_fault mm/memory.c:3989 [inline] __handle_mm_fault+0x9bf/0x2700 mm/memory.c:4113 handle_mm_fault+0x2f1/0x6da mm/memory.c:4150 __do_page_fault+0x477/0xbb0 arch/x86/mm/fault.c:1420 page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1122 RIP: 2fa6db98: (null) RSP: 89bda0:000000c42fa6da90 EFLAGS: c42fa6db98 [28732] 0 28732 18147 8727 25 3 0 1000 syz-executor.3 [28737] 0 28737 18147 8726 25 3 0 1000 syz-executor.5 [28770] 0 28770 18147 8727 25 3 0 1000 syz-executor.3 [28771] 0 28771 18147 8728 25 3 0 0 syz-executor.1 [28773] 0 28773 18147 8726 25 3 0 1000 syz-executor.5 [28774] 0 28774 18147 8727 25 3 0 0 syz-executor.4 [28794] 0 28794 18246 10772 30 4 0 1000 syz-executor.5 [28803] 0 28803 18147 8728 25 3 0 0 syz-executor.1 [28806] 0 28806 18147 8727 25 3 0 0 syz-executor.4 [28812] 0 28812 18147 8727 25 3 0 1000 syz-executor.3 [28815] 0 28815 18147 8726 25 3 0 1000 syz-executor.5 [28833] 0 28833 18279 11268 30 4 0 1000 syz-executor.5 [28839] 0 28839 18147 8728 25 3 0 0 syz-executor.1 [28842] 0 28842 18147 8727 25 3 0 0 syz-executor.4 [28851] 0 28851 18246 10345 30 4 0 0 syz-executor.4 [28862] 0 28862 18147 8727 25 3 0 1000 syz-executor.3 [28863] 0 28863 18147 8726 25 3 0 1000 syz-executor.5 [28864] 0 28864 18147 8728 25 3 0 0 syz-executor.1 [28866] 0 28866 18147 8727 25 3 0 0 syz-executor.4 [28886] 0 28886 18279 11278 30 4 0 0 syz-executor.4 [28902] 0 28902 18147 8727 25 3 0 1000 syz-executor.3 [28903] 0 28903 18147 8728 25 3 0 0 syz-executor.1 [28904] 0 28904 18147 8727 25 3 0 0 syz-executor.4 [28906] 0 28906 18147 8726 25 3 0 1000 syz-executor.5 [28927] 0 28927 18246 12184 32 4 0 1000 syz-executor.5 [28944] 0 28944 18147 8726 25 3 0 1000 syz-executor.5 [28945] 0 28945 18147 8727 25 3 0 0 syz-executor.4 [28947] 0 28947 18147 8728 25 3 0 0 syz-executor.1 [28948] 0 28948 18147 8727 25 3 0 1000 syz-executor.3 [28979] 0 28979 18147 8727 25 3 0 1000 syz-executor.3 [28984] 0 28984 18147 8727 25 3 0 0 syz-executor.4 [28985] 0 28985 18147 8726 25 3 0 1000 syz-executor.5 [28987] 0 28987 18147 8728 25 3 0 0 syz-executor.1 [29006] 0 29006 18279 11043 30 4 0 0 syz-executor.1 [29014] 0 29014 18147 8727 25 3 0 1000 syz-executor.3 [29018] 0 29018 18147 8727 25 3 0 0 syz-executor.4 [29022] 0 29022 18246 9575 28 4 0 1000 syz-executor.3 [29026] 0 29026 18246 9364 28 4 0 0 syz-executor.4 [29037] 0 29037 18147 8727 25 3 0 1000 syz-executor.3 [29038] 0 29038 18147 8728 25 3 0 0 syz-executor.1 [29039] 0 29039 18147 8726 25 3 0 1000 syz-executor.5 [29042] 0 29042 18147 8727 25 3 0 0 syz-executor.4 [29069] 0 29069 18147 8728 25 3 0 1000 syz-executor.0 [29074] 0 29074 18147 8726 25 3 0 1000 syz-executor.5 [29082] 0 29082 18312 12909 33 4 0 1000 syz-executor.0 [29090] 0 29090 18147 8727 25 3 0 0 syz-executor.4 [29091] 0 29091 18147 8728 25 3 0 0 syz-executor.1 [29094] 0 29094 18147 8727 25 3 0 1000 syz-executor.3 [29098] 0 29098 18246 9146 27 4 0 0 syz-executor.4 [29110] 0 29110 18147 8728 25 3 0 1000 syz-executor.0 [29121] 0 29121 18147 8727 25 3 0 0 syz-executor.4 [29126] 0 29126 18147 8728 25 3 0 1000 syz-executor.0 [29127] 0 29127 18147 8728 25 3 0 0 syz-executor.1 [29128] 0 29128 18147 8727 25 3 0 1000 syz-executor.3 [29130] 0 29130 18147 8726 25 3 0 1000 syz-executor.5 [29166] 0 29166 18147 8728 25 3 0 0 syz-executor.1 [29170] 0 29170 18147 8727 25 3 0 1000 syz-executor.3 [29171] 0 29171 18147 8728 25 3 0 1000 syz-executor.0 [29173] 0 29173 18147 8726 25 3 0 1000 syz-executor.5 [29175] 0 29175 18147 8727 25 3 0 0 syz-executor.4 [29204] 0 29204 18147 8727 25 3 0 1000 syz-executor.3 [29208] 0 29208 18147 8727 25 3 0 0 syz-executor.4 [29223] 0 29223 18147 8728 25 3 0 0 syz-executor.1 [29229] 0 29229 18147 8727 25 3 0 1000 syz-executor.3 [29230] 0 29230 18147 8728 25 3 0 1000 syz-executor.0 [29233] 0 29233 18147 8727 25 3 0 0 syz-executor.4 [29234] 0 29234 18147 8726 25 3 0 1000 syz-executor.5 [29258] 0 29258 18246 10749 30 4 0 1000 syz-executor.0 [29263] 0 29263 18147 8728 25 3 0 1000 syz-executor.0 [29276] 0 29276 18147 8726 25 3 0 1000 syz-executor.5 [29277] 0 29277 18147 8727 25 3 0 1000 syz-executor.3 [29279] 0 29279 18147 8727 25 3 0 0 syz-executor.4 [29280] 0 29280 18147 8728 25 3 0 0 syz-executor.1 [29298] 0 29298 18246 10388 30 4 0 0 syz-executor.1 [29303] 0 29303 18147 8728 25 3 0 1000 syz-executor.0 [29317] 0 29317 18147 8726 25 3 0 1000 syz-executor.5 [29319] 0 29319 18147 8727 25 3 0 0 syz-executor.4 [29320] 0 29320 18147 8728 25 3 0 0 syz-executor.1 [29321] 0 29321 18147 8727 25 3 0 1000 syz-executor.3 [29322] 0 29322 18147 8728 25 3 0 1000 syz-executor.0 [29348] 0 29348 18246 12543 33 4 0 1000 syz-executor.0 [29354] 0 29354 18147 8727 25 3 0 1000 syz-executor.3 [29359] 0 29359 18147 8727 25 3 0 0 syz-executor.4 [29368] 0 29368 18147 8728 25 3 0 1000 syz-executor.0 [29372] 0 29372 18246 9887 29 4 0 0 syz-executor.4 [29374] 0 29374 18147 8726 25 3 0 1000 syz-executor.5 [29377] 0 29377 18147 8728 25 3 0 0 syz-executor.1 [29388] 0 29388 18279 8973 27 4 0 0 syz-executor.1 [29395] 0 29395 18147 8727 25 3 0 1000 syz-executor.3 [29396] 0 29396 18147 8727 25 3 0 0 syz-executor.4 [29417] 0 29417 18147 8728 25 3 0 1000 syz-executor.0 [29418] 0 29418 18147 8727 25 3 0 1000 syz-executor.3 [29419] 0 29419 18147 8727 25 3 0 0 syz-executor.4 [29420] 0 29420 18147 8726 25 3 0 1000 syz-executor.5 [29422] 0 29422 18147 8728 25 3 0 0 syz-executor.1 [29449] 0 29449 18246 9555 28 4 0 0 syz-executor.1 [29456] 0 29456 18147 8728 25 3 0 0 syz-executor.1 [29465] 0 29465 18147 8727 25 3 0 1000 syz-executor.3 [29469] 0 29469 18147 8726 25 3 0 1000 syz-executor.5 [29474] 0 29474 18147 8727 25 3 0 0 syz-executor.4 [29491] 0 29491 18147 8728 25 3 0 1000 syz-executor.0 [29500] 0 29500 18147 8728 25 3 0 0 syz-executor.1 [29503] 0 29503 18147 8727 25 3 0 1000 syz-executor.3 [29506] 0 29506 18147 8726 25 3 0 1000 syz-executor.5 [29514] 0 29514 18147 8727 25 3 0 0 syz-executor.4 [29532] 0 29532 18279 12226 32 4 0 0 syz-executor.4 [29536] 0 29536 18147 8728 25 3 0 1000 syz-executor.0 [29540] 0 29540 18147 8727 25 3 0 1000 syz-executor.3 [29551] 0 29551 18246 10473 30 4 0 1000 syz-executor.0 [29555] 0 29555 18147 8727 25 3 0 0 syz-executor.4 [29559] 0 29559 18147 8726 25 3 0 1000 syz-executor.5 [29564] 0 29564 18147 8728 25 3 0 0 syz-executor.1 [29569] 0 29569 18147 8728 25 3 0 1000 syz-executor.0 [29580] 0 29580 18246 11549 31 4 0 0 syz-executor.1 [29585] 0 29585 18246 8980 27 4 0 1000 syz-executor.0 [29588] 0 29588 18147 8727 25 3 0 1000 syz-executor.3 [29597] 0 29597 18246 11661 31 4 0 1000 syz-executor.3 [29599] 0 29599 18147 8727 25 3 0 0 syz-executor.4 [29606] 0 29606 18147 8726 25 3 0 1000 syz-executor.5 [29607] 0 29607 18246 8856 27 4 0 0 syz-executor.4 [29611] 0 29611 18147 8728 25 3 0 1000 syz-executor.0 [29613] 0 29613 18180 8738 25 3 0 0 syz-executor.1 [29618] 0 29618 18147 8727 25 3 0 1000 syz-executor.3 [29620] 0 29620 18246 9075 27 4 0 1000 syz-executor.5 [29638] 0 29638 18147 8727 25 3 0 0 syz-executor.4 [29644] 0 29644 18147 8726 25 3 0 1000 syz-executor.5 [29646] 0 29646 18246 8997 27 4 0 0 syz-executor.4 [29656] 0 29656 18147 8727 25 3 0 1000 syz-executor.3 [29658] 0 29658 18147 8728 25 3 0 1000 syz-executor.0 [29663] 0 29663 18147 8728 25 3 0 0 syz-executor.1 [29673] 0 29673 18279 12331 32 4 0 1000 syz-executor.0 [29676] 0 29676 18147 8727 25 3 0 0 syz-executor.4 [29682] 0 29682 18246 9221 27 4 0 0 syz-executor.4 [29690] 0 29690 18147 8728 25 3 0 0 syz-executor.1 [29692] 0 29692 18147 8726 25 3 0 1000 syz-executor.5 [29694] 0 29694 18147 8728 25 3 0 1000 syz-executor.0 [29695] 0 29695 18147 8727 25 3 0 1000 syz-executor.3 [29697] 0 29697 18147 8727 25 3 0 0 syz-executor.4 [29729] 0 29729 18147 8726 25 3 0 1000 syz-executor.5 [29732] 0 29732 18147 8727 25 3 0 1000 syz-executor.3 [29745] 0 29745 18246 10592 30 4 0 1000 syz-executor.3 [29747] 0 29747 18147 8727 25 3 0 0 syz-executor.4 [29751] 0 29751 18147 8728 25 3 0 0 syz-executor.1 [29752] 0 29752 18147 8728 25 3 0 1000 syz-executor.0 [29770] 0 29770 18180 8737 25 3 0 1000 syz-executor.3 [29776] 0 29776 18246 9056 27 4 0 1000 syz-executor.3 [29779] 0 29779 18180 8728 25 3 0 1000 syz-executor.5 [29782] 0 29782 18147 8727 25 3 0 0 syz-executor.4 [29785] 0 29785 18246 9413 28 4 0 1000 syz-executor.5 [29799] 0 29799 18147 8727 25 3 0 1000 syz-executor.3 [29800] 0 29800 18147 8727 25 3 0 0 syz-executor.4 [29802] 0 29802 18147 8726 25 3 0 1000 syz-executor.5 [29803] 0 29803 18147 8728 25 3 0 1000 syz-executor.0 [29804] 0 29804 18147 8728 25 3 0 0 syz-executor.1 [29830] 0 29830 18246 9554 28 4 0 0 syz-executor.1 [29839] 0 29839 18147 8727 25 3 0 1000 syz-executor.3 [29840] 0 29840 18147 8728 25 3 0 1000 syz-executor.0 [29841] 0 29841 18147 8728 25 3 0 0 syz-executor.1 [29846] 0 29846 18147 8726 25 3 0 1000 syz-executor.5 [29847] 0 29847 18147 8727 25 3 0 0 syz-executor.4 [29871] 0 29871 18246 11681 31 4 0 0 syz-executor.4 [29876] 0 29876 18147 8728 25 3 0 1000 syz-executor.0 [29880] 0 29880 18147 8728 25 3 0 0 syz-executor.1 [29887] 0 29887 18246 9218 27 4 0 0 syz-executor.1 [29896] 0 29896 18147 8727 25 3 0 1000 syz-executor.3 [29897] 0 29897 18147 8726 25 3 0 1000 syz-executor.5 [29899] 0 29899 18147 8728 25 3 0 0 syz-executor.1 [29901] 0 29901 18147 8727 25 3 0 0 syz-executor.4 [29902] 0 29902 18147 8728 25 3 0 1000 syz-executor.0 [29934] 0 29934 18147 8726 25 3 0 1000 syz-executor.5 [29938] 0 29938 18147 8727 25 3 0 1000 syz-executor.3 [29942] 0 29942 18147 8728 25 3 0 0 syz-executor.1 [29959] 0 29959 18147 8728 25 3 0 1000 syz-executor.0 [29961] 0 29961 18147 8727 25 3 0 0 syz-executor.4 [29971] 0 29971 18246 10334 29 4 0 0 syz-executor.4 [29974] 0 29974 18147 8727 25 3 0 1000 syz-executor.3 [29989] 0 29989 18147 8728 25 3 0 1000 syz-executor.0 [29991] 0 29991 18147 8726 25 3 0 1000 syz-executor.5 [29993] 0 29993 18147 8727 25 3 0 0 syz-executor.4 [29994] 0 29994 18147 8728 25 3 0 0 syz-executor.1 [29995] 0 29995 18147 8727 25 3 0 1000 syz-executor.3 [30027] 0 30027 18147 8727 25 3 0 0 syz-executor.4 [30031] 0 30031 18147 8728 25 3 0 1000 syz-executor.0 [30034] 0 30034 18147 8728 25 3 0 0 syz-executor.1 [30035] 0 30035 18147 8727 25 3 0 1000 syz-executor.3 [30059] 0 30059 18147 8726 25 3 0 1000 syz-executor.5 [30063] 0 30063 18147 8727 25 3 0 0 syz-executor.4 [30081] 0 30081 18147 8728 25 3 0 0 syz-executor.1 [30082] 0 30082 18147 8727 25 3 0 1000 syz-executor.3 [30084] 0 30084 18147 8726 25 3 0 1000 syz-executor.5 [30086] 0 30086 18147 8728 25 3 0 1000 syz-executor.0 [30087] 0 30087 18147 8727 25 3 0 0 syz-executor.4 [30119] 0 30119 18147 8727 25 3 0 0 syz-executor.4 [30122] 0 30122 18147 8727 25 3 0 1000 syz-executor.3 [30129] 0 30129 18147 8728 25 3 0 0 syz-executor.1 [30142] 0 30142 18246 8970 27 4 0 0 syz-executor.1 [30148] 0 30148 18246 8901 25 3 0 1000 syz-executor.0 [30149] 0 30149 18279 9204 27 4 0 1000 syz-executor.0 [30152] 0 30152 18147 8727 25 3 0 1000 syz-executor.3 [30157] 0 30157 18147 8726 25 3 0 1000 syz-executor.5 [30174] 0 30174 18147 8728 25 3 0 0 syz-executor.1 [30175] 0 30175 18147 8726 25 3 0 1000 syz-executor.5 [30178] 0 30178 18147 8727 25 3 0 0 syz-executor.4 [30179] 0 30179 18147 8727 25 3 0 1000 syz-executor.3 [30180] 0 30180 18147 8728 25 3 0 1000 syz-executor.0 [30215] 0 30215 18147 8728 25 3 0 0 syz-executor.1 [30217] 0 30217 18147 8727 25 3 0 1000 syz-executor.3 [30218] 0 30218 18147 8728 25 3 0 1000 syz-executor.0 [30232] 0 30232 18246 9714 28 4 0 1000 syz-executor.0 [30237] 0 30237 18147 8727 25 3 0 1000 syz-executor.3 [30243] 0 30243 18147 8728 25 3 0 1000 syz-executor.0 [30245] 0 30245 18246 9446 28 4 0 1000 syz-executor.3 [30252] 0 30252 18147 8728 25 3 0 0 syz-executor.1 [30256] 0 30256 18246 9381 28 4 0 0 syz-executor.1 [30266] 0 30266 18147 8728 25 3 0 1000 syz-executor.0 [30268] 0 30268 18147 8728 25 3 0 0 syz-executor.1 [30269] 0 30269 18147 8727 25 3 0 0 syz-executor.4 [30270] 0 30270 18147 8726 25 3 0 1000 syz-executor.5 [30271] 0 30271 18147 8727 25 3 0 1000 syz-executor.3 [30307] 0 30307 18147 8728 25 3 0 1000 syz-executor.0 [30311] 0 30311 18147 8728 25 3 0 0 syz-executor.1 [30312] 0 30312 18147 8727 25 3 0 1000 syz-executor.3 [30326] 0 30326 18279 12656 33 4 0 1000 syz-executor.3 [30332] 0 30332 18147 8728 25 3 0 1000 syz-executor.0 [30339] 0 30339 18246 9952 29 4 0 1000 syz-executor.0 [30342] 0 30342 18147 8727 25 3 0 0 syz-executor.4 [30343] 0 30343 18147 8728 25 3 0 0 syz-executor.1 [30349] 0 30349 18279 11379 31 4 0 0 syz-executor.1 [30360] 0 30360 18147 8727 25 3 0 1000 syz-executor.3 [30361] 0 30361 18147 8726 25 3 0 1000 syz-executor.5 [30364] 0 30364 18147 8727 25 3 0 0 syz-executor.4 [30365] 0 30365 18147 8728 25 3 0 1000 syz-executor.0 [30366] 0 30366 18147 8728 25 3 0 0 syz-executor.1 [30399] 0 30399 18147 8728 25 3 0 0 syz-executor.1 [30403] 0 30403 18147 8728 25 3 0 1000 syz-executor.0 [30406] 0 30406 18147 8727 25 3 0 1000 syz-executor.3 [30419] 0 30419 18246 12633 33 4 0 1000 syz-executor.3 [30424] 0 30424 18147 8728 25 3 0 1000 syz-executor.0 [30427] 0 30427 18147 8728 25 3 0 0 syz-executor.1 [30430] 0 30430 18147 8726 25 3 0 1000 syz-executor.5 [30458] 0 30458 18147 8727 25 3 0 0 syz-executor.4 [30459] 0 30459 18147 8727 25 3 0 1000 syz-executor.3 [30460] 0 30460 18147 8726 25 3 0 1000 syz-executor.5 [30461] 0 30461 18147 8728 25 3 0 0 syz-executor.1 [30462] 0 30462 18147 8728 25 3 0 1000 syz-executor.0 [30494] 0 30494 18147 8728 25 3 0 1000 syz-executor.0