[30006] 0 30006 18246 10456 31 4 0 1000 syz-executor.5 [30071] 0 30071 18246 9716 28 4 0 1000 syz-executor.1 [30198] 0 30198 18246 8909 27 4 0 1000 syz-executor.2 [30378] 0 30378 18246 9070 26 3 0 1000 syz-executor.1 INFO: rcu_preempt detected stalls on CPUs/tasks: Tasks blocked on level-0 rcu_node (CPUs 0-1): P29946 (detected by 1, t=10502 jiffies, g=93400, c=93399, q=17) modprobe R running task 26840 29946 26224 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] alloc_slab_page mm/slub.c:1499 [inline] allocate_slab mm/slub.c:1650 [inline] new_slab+0x33c/0x3e0 mm/slub.c:1714 new_slab_objects mm/slub.c:2497 [inline] ___slab_alloc.constprop.0+0x387/0x4e0 mm/slub.c:2649 __slab_alloc.isra.0.constprop.0+0x4b/0x90 mm/slub.c:2689 slab_alloc_node mm/slub.c:2752 [inline] slab_alloc mm/slub.c:2800 [inline] kmem_cache_alloc+0x1ca/0x360 mm/slub.c:2805 getname_flags+0xc8/0x550 fs/namei.c:141 do_sys_open+0x21f/0x590 fs/open.c:1090 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x7fdf16230120 RSP: 002b:00007ffed9ad4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000557b97b2d290 RCX: 00007fdf16230120 RDX: 00000000000001b6 RSI: 0000000000080000 RDI: 00007ffed9ad4120 RBP: 00007ffed9ad40b0 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 R13: 00007fdf164fbd7e R14: 0000000000000000 R15: 0000000000000000 modprobe R running task 26840 29946 26224 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] alloc_slab_page mm/slub.c:1499 [inline] allocate_slab mm/slub.c:1650 [inline] new_slab+0x33c/0x3e0 mm/slub.c:1714 new_slab_objects mm/slub.c:2497 [inline] ___slab_alloc.constprop.0+0x387/0x4e0 mm/slub.c:2649 __slab_alloc.isra.0.constprop.0+0x4b/0x90 mm/slub.c:2689 slab_alloc_node mm/slub.c:2752 [inline] slab_alloc mm/slub.c:2800 [inline] kmem_cache_alloc+0x1ca/0x360 mm/slub.c:2805 getname_flags+0xc8/0x550 fs/namei.c:141 do_sys_open+0x21f/0x590 fs/open.c:1090 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x7fdf16230120 RSP: 002b:00007ffed9ad4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000557b97b2d290 RCX: 00007fdf16230120 RDX: 00000000000001b6 RSI: 0000000000080000 RDI: 00007ffed9ad4120 RBP: 00007ffed9ad40b0 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 R13: 00007fdf164fbd7e R14: 0000000000000000 R15: 0000000000000000 [30417] 0 30417 18246 10325 31 4 0 0 syz-executor.4 [30437] 0 30437 18246 9720 29 4 0 0 syz-executor.4 [30447] 0 30447 18279 10287 29 3 0 1000 syz-executor.1 [30458] 0 30458 18279 10162 28 3 0 0 syz-executor.0 [30487] 0 30487 18246 9276 29 4 0 0 syz-executor.3 [30520] 0 30520 18279 9302 27 3 0 0 syz-executor.0 [30523] 0 30523 18279 9169 26 3 0 1000 syz-executor.1 [30601] 0 30601 18279 10038 28 3 0 0 syz-executor.0 [30667] 0 30667 18246 9809 30 4 0 0 syz-executor.0 [30694] 0 30694 18246 9795 30 4 0 1000 syz-executor.5 [30741] 0 30741 18279 8984 27 4 0 1000 syz-executor.2 [30780] 0 30780 18246 10049 30 4 0 0 syz-executor.0 [30811] 0 30811 18246 9958 30 4 0 0 syz-executor.4 [30830] 0 30830 18246 9469 29 4 0 0 syz-executor.4 [30835] 0 30835 18246 8867 28 4 0 1000 syz-executor.5 [30863] 0 30863 18246 9915 30 4 0 1000 syz-executor.5 [30892] 0 30892 18246 9584 29 4 0 0 syz-executor.4 [30933] 0 30933 18246 8862 28 4 0 1000 syz-executor.5 [30970] 0 30970 18246 9575 28 4 0 1000 syz-executor.2 [31151] 0 31151 18246 9941 30 4 0 0 syz-executor.3 [31246] 0 31246 18246 9787 29 4 0 1000 syz-executor.2 [31382] 0 31382 18246 9337 30 4 0 1000 syz-executor.1 [31542] 0 31542 18246 9927 29 4 0 1000 syz-executor.2 [31703] 0 31703 18279 10799 32 4 0 1000 syz-executor.1 [31951] 0 31951 18246 10637 31 4 0 0 syz-executor.4 [31981] 0 31981 18246 9298 29 4 0 0 syz-executor.3 [31991] 0 31991 18246 9424 29 4 0 0 syz-executor.3 [32037] 0 32037 18246 9337 25 3 0 1000 syz-executor.2 [32051] 0 32051 18246 9493 29 4 0 0 syz-executor.3 [32122] 0 32122 18246 9888 29 4 0 1000 syz-executor.2 [32133] 0 32133 18246 9910 30 4 0 0 syz-executor.3 [32153] 0 32153 18312 11221 31 4 0 0 syz-executor.3 [32183] 0 32183 18246 9628 29 4 0 0 syz-executor.3 [32215] 0 32215 18246 9309 29 4 0 0 syz-executor.4 [32232] 0 32232 18246 9828 29 4 0 1000 syz-executor.2 [32299] 0 32299 18246 9464 30 4 0 1000 syz-executor.1 [32367] 0 32367 18246 10091 31 4 0 1000 syz-executor.1 [32410] 0 32410 18246 9210 28 4 0 0 syz-executor.3 [32646] 0 32646 18246 9585 29 4 0 0 syz-executor.3 [ 308] 0 308 18213 8750 28 4 0 1000 syz-executor.5 [ 356] 0 356 18246 9378 29 4 0 0 syz-executor.3 [ 397] 0 397 18246 9579 29 4 0 1000 syz-executor.5 [ 827] 0 827 18246 9661 29 4 0 0 syz-executor.0 [ 870] 0 870 18246 10121 30 4 0 1000 syz-executor.5 [ 969] 0 969 18246 9579 28 4 0 1000 syz-executor.2 [ 984] 0 984 18246 9560 27 4 0 0 syz-executor.0 [ 1004] 0 1004 18246 9694 28 4 0 1000 syz-executor.2 [ 1048] 0 1048 18246 10546 31 4 0 0 syz-executor.3 [ 1065] 0 1065 18246 9495 26 4 0 1000 syz-executor.2 [ 1352] 0 1352 18246 9518 27 4 0 0 syz-executor.3 [ 1456] 0 1456 18246 9046 29 4 0 1000 syz-executor.1 [ 1459] 0 1459 18246 9691 29 4 0 1000 syz-executor.5