[17444] 0 17444 18214 8747 26 4 0 1000 syz-executor.5 [17480] 0 17480 18214 8746 26 4 0 1000 syz-executor.4 [17491] 0 17491 18247 10195 29 4 0 1000 syz-executor.1 INFO: rcu_preempt detected stalls on CPUs/tasks: Tasks blocked on level-0 rcu_node (CPUs 0-1): P1782 (detected by 1, t=10503 jiffies, g=88573, c=88572, q=1065) syz-fuzzer R running task 26464 1782 1775 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: 0020:0x13 RSP: 3b97ca91:000000c420021f20 EFLAGS: 00000001 syz-fuzzer R running task 26464 1782 1775 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: 0020:0x13 RSP: 3b97ca91:000000c420021f20 EFLAGS: 00000001 [17494] 0 17494 18279 9193 26 4 0 1000 syz-executor.3 [17601] 0 17601 18247 11425 31 4 0 1000 syz-executor.3 [17632] 0 17632 18214 8748 26 4 0 1000 syz-executor.5 [17634] 0 17634 18247 9755 28 4 0 1000 syz-executor.1 [17665] 0 17665 18247 10250 29 4 0 1000 syz-executor.1 [17702] 0 17702 18247 9153 26 4 0 1000 syz-executor.3 [17794] 0 17794 18280 8751 26 4 0 1000 syz-executor.5 [17844] 0 17844 18246 9507 28 4 0 1000 syz-executor.1 [17846] 0 17846 18246 9365 27 4 0 1000 syz-executor.3 [18004] 0 18004 18246 8929 26 4 0 1000 syz-executor.3 [18048] 0 18048 18247 9063 26 4 0 1000 syz-executor.3 [18162] 0 18162 18246 10190 28 4 0 1000 syz-executor.5 [18179] 0 18179 18247 9172 26 4 0 1000 syz-executor.3 [18266] 0 18266 18247 10196 29 4 0 1000 syz-executor.1 [18306] 0 18306 18247 9846 28 4 0 1000 syz-executor.3 [18345] 0 18345 18246 10465 30 4 0 1000 syz-executor.1 [18386] 0 18386 18246 8820 26 4 0 1000 syz-executor.3 [18476] 0 18476 18247 12844 33 4 0 1000 syz-executor.5 [18545] 0 18545 18279 9555 27 3 0 1000 syz-executor.4 [18580] 0 18580 18246 8803 25 3 0 1000 syz-executor.3 [18604] 0 18604 18247 9612 27 4 0 1000 syz-executor.5 [18635] 0 18635 18279 10358 29 3 0 1000 syz-executor.4 [18659] 0 18659 18246 8750 25 3 0 1000 syz-executor.3 [18685] 0 18685 18279 10000 28 3 0 1000 syz-executor.4 [18716] 0 18716 18246 8722 25 3 0 1000 syz-executor.3 [18777] 0 18777 18247 8977 26 4 0 1000 syz-executor.3 [18801] 0 18801 18247 10755 29 4 0 1000 syz-executor.5 [18807] 0 18807 18246 8807 25 3 0 0 syz-executor.0 [18877] 0 18877 18247 9488 27 4 0 1000 syz-executor.4 [18909] 0 18909 18246 8833 25 3 0 0 syz-executor.0 [18931] 0 18931 18279 10204 27 3 0 1000 syz-executor.5 [18969] 0 18969 18246 9476 28 4 0 1000 syz-executor.1 [18991] 0 18991 18246 8821 25 3 0 0 syz-executor.0 [18994] 0 18994 18246 8743 25 3 0 1000 syz-executor.2 [19000] 0 19000 18246 8950 25 3 0 1000 syz-executor.5 [19015] 0 19015 18247 12843 34 4 0 1000 syz-executor.1 [19044] 0 19044 18246 9309 26 3 0 1000 syz-executor.5 [19059] 0 19059 18279 8841 26 3 0 1000 syz-executor.2 [19068] 0 19068 18246 8996 26 4 0 0 syz-executor.0 [19086] 0 19086 18247 9214 26 4 0 1000 syz-executor.3 [19089] 0 19089 18247 9015 26 4 0 0 syz-executor.0 [19158] 0 19158 18279 8922 26 3 0 1000 syz-executor.2 [19174] 0 19174 18246 8896 26 4 0 1000 syz-executor.3 [19247] 0 19247 18246 9530 26 3 0 1000 syz-executor.2 [19251] 0 19251 18246 9589 27 4 0 1000 syz-executor.3