[ 2542] 0 2542 18246 9381 28 4 0 0 syz-executor.1 [ 2544] 0 2544 18213 8747 27 4 0 1000 syz-executor.0 [ 2550] 0 2550 18246 8945 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): P22072 (detected by 0, t=10502 jiffies, g=81670, c=81669, q=19) syz-executor.5 R running task 27056 22072 27695 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_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 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45d029 RSP: 002b:00007ffe1970cdc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f1bb6c82700 RCX: 000000000045d029 RDX: 00007f1bb6c829d0 RSI: 00007f1bb6c81db0 RDI: 00000000003d0f00 RBP: 00007ffe1970cfe0 R08: 00007f1bb6c82700 R09: 00007f1bb6c82700 R10: 00007f1bb6c829d0 R11: 0000000000000202 R12: 0000000000000000 R13: 00007ffe1970ce7f R14: 00007f1bb6c829c0 R15: 000000000075bf2c syz-executor.5 R running task 27056 22072 27695 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_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 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45d029 RSP: 002b:00007ffe1970cdc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f1bb6c82700 RCX: 000000000045d029 RDX: 00007f1bb6c829d0 RSI: 00007f1bb6c81db0 RDI: 00000000003d0f00 RBP: 00007ffe1970cfe0 R08: 00007f1bb6c82700 R09: 00007f1bb6c82700 R10: 00007f1bb6c829d0 R11: 0000000000000202 R12: 0000000000000000 R13: 00007ffe1970ce7f R14: 00007f1bb6c829c0 R15: 000000000075bf2c [ 2566] 0 2566 18213 8747 27 4 0 1000 syz-executor.0 [ 2577] 0 2577 18213 9149 27 4 0 0 syz-executor.1 [ 2582] 0 2582 18279 11397 31 4 0 0 syz-executor.2 [ 2584] 0 2584 18246 8749 27 4 0 1000 syz-executor.0 [ 2588] 0 2588 18312 9112 27 4 0 1000 syz-executor.3 [ 2626] 0 2626 18246 9143 27 4 0 1000 syz-executor.5 [ 2628] 0 2628 18246 9198 27 4 0 1000 syz-executor.3 [ 2656] 0 2656 18246 9060 27 4 0 1000 syz-executor.3 [ 2659] 0 2659 18246 9007 27 4 0 1000 syz-executor.5 [ 2660] 0 2660 18246 8928 27 4 0 0 syz-executor.2 [ 2689] 0 2689 18213 8747 27 4 0 1000 syz-executor.0 [ 2697] 0 2697 18246 9093 27 4 0 1000 syz-executor.5 [ 2700] 0 2700 18246 8917 27 4 0 1000 syz-executor.3 [ 2730] 0 2730 18246 9240 27 4 0 0 syz-executor.1 [ 2731] 0 2731 18246 9211 27 4 0 1000 syz-executor.5 [ 2732] 0 2732 18246 8909 27 4 0 0 syz-executor.2 [ 2733] 0 2733 18246 8941 27 4 0 1000 syz-executor.3 [ 2770] 0 2770 18246 9118 27 4 0 0 syz-executor.2 [ 2771] 0 2771 18279 9030 28 4 0 1000 syz-executor.5 [ 2772] 0 2772 18246 9114 27 4 0 0 syz-executor.1 [ 2798] 0 2798 18246 9291 28 4 0 0 syz-executor.2 [ 2808] 0 2808 18246 11754 31 4 0 1000 syz-executor.3 [ 2811] 0 2811 18279 8827 28 4 0 1000 syz-executor.5 [ 2846] 0 2846 18246 8972 27 4 0 1000 syz-executor.5 [ 2848] 0 2848 18246 9148 27 4 0 0 syz-executor.1 [ 2880] 0 2880 18246 8848 27 4 0 1000 syz-executor.5 [ 2915] 0 2915 18246 12144 32 4 0 0 syz-executor.1 [ 2920] 0 2920 18246 8828 27 4 0 1000 syz-executor.3 [ 2954] 0 2954 18246 10020 29 4 0 0 syz-executor.1 [ 3001] 0 3001 18246 9576 28 4 0 1000 syz-executor.3 [ 3010] 0 3010 18246 12633 33 4 0 0 syz-executor.1 [ 3039] 0 3039 18246 9894 29 4 0 0 syz-executor.1 [ 3046] 0 3046 18246 9470 28 4 0 1000 syz-executor.3 [ 3057] 0 3057 18246 9631 28 4 0 0 syz-executor.2 [ 3072] 0 3072 18246 9450 28 4 0 1000 syz-executor.5 [ 3079] 0 3079 18246 9507 28 4 0 1000 syz-executor.3 [ 3088] 0 3088 18246 9173 27 4 0 0 syz-executor.2 [ 3108] 0 3108 18279 9837 30 4 0 1000 syz-executor.5 [ 3113] 0 3113 18246 9263 26 3 0 1000 syz-executor.0 [ 3118] 0 3118 18279 8792 27 4 0 0 syz-executor.2 [ 3119] 0 3119 18246 8778 27 4 0 1000 syz-executor.3 [ 3138] 0 3138 18279 9406 28 4 0 1000 syz-executor.3 [ 3141] 0 3141 18246 9116 27 4 0 0 syz-executor.2