INFO: rcu_sched detected stalls on CPUs/tasks: (detected by 1, t=10502 jiffies, g=19502, c=19501, q=1) All QSes seen, last rcu_sched kthread activity 10494 (4295092084-4295081590), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.0 R running task 26768 10874 7449 0x0000000c Call Trace: sched_show_task kernel/sched/core.c:5168 [inline] sched_show_task.cold+0x2f0/0x351 kernel/sched/core.c:5143 print_other_cpu_stall kernel/rcu/tree.c:1501 [inline] check_cpu_stall kernel/rcu/tree.c:1616 [inline] __rcu_pending kernel/rcu/tree.c:3390 [inline] rcu_pending kernel/rcu/tree.c:3452 [inline] rcu_check_callbacks.cold+0xcb1/0xd0a kernel/rcu/tree.c:2792 update_process_times+0x31/0x70 kernel/time/timer.c:1590 tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161 tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1219 __run_hrtimer kernel/time/hrtimer.c:1223 [inline] __hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1287 hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1321 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline] smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1100 apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792 RIP: 0010:unwind_next_frame+0xe/0x50 arch/x86/kernel/unwind_frame.c:287 RSP: 0018:ffff8880aed07780 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: dffffc0000000000 RBX: ffff8880aed07830 RCX: 0000000000000022 RDX: ffff8880aed07790 RSI: ffffffff82d19dc4 RDI: ffff8880aed07790 RBP: ffff8880aed07810 R08: 0000000000000001 R09: ffff8880aed077e8 R10: ffff8880aed077b8 R11: ffff8880aed077c8 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888059c9e600 R15: ffff8880aa800ac0 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 save_stack+0x45/0xd0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc mm/kasan/kasan.c:551 [inline] kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:529 kmem_cache_alloc_node_trace+0x153/0x770 mm/slab.c:3661 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x3d/0x80 mm/slab.c:3696 __kmalloc_reserve.isra.0+0x40/0xe0 net/core/skbuff.c:137 __alloc_skb+0xcf/0x500 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:980 [inline] new_skb+0x28/0x1d0 drivers/block/aoe/aoecmd.c:67 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:427 [inline] aoecmd_cfg+0x180/0x5c0 drivers/block/aoe/aoecmd.c:1392 discover_timer drivers/block/aoe/aoemain.c:44 [inline] discover_timer+0xcd/0x170 drivers/block/aoe/aoemain.c:21 call_timer_fn+0x161/0x670 kernel/time/timer.c:1279 expire_timers kernel/time/timer.c:1318 [inline] __run_timers kernel/time/timer.c:1636 [inline] __run_timers kernel/time/timer.c:1604 [inline] run_timer_softirq+0x5b7/0x1520 kernel/time/timer.c:1649 __do_softirq+0x244/0x9a0 kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x160/0x1b0 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102 apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792 RIP: 0010:mod_zone_state mm/vmstat.c:411 [inline] RIP: 0010:mod_zone_page_state+0x25/0xb0 mm/vmstat.c:449 RSP: 0018:ffff88820b8e6fb0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: dffffc0000000000 RBX: ffff88821fff8d80 RCX: 1ffff11043fff1bb RDX: ffffffffffffffe0 RSI: 0000000000000009 RDI: ffff88821fff8dd8 RBP: ffff88820b8e6fc8 R08: ffff888059c9e600 R09: ffff888059c9eec8 R10: 0000000000000000 R11: 0000000000000000 R12: 057ffe0000000000 R13: 00000000ffffffff R14: 0000000000000001 R15: ffff8880aed2be90 account_kernel_stack+0xc9/0x190 kernel/fork.c:333 release_task_stack kernel/fork.c:346 [inline] put_task_stack+0x66/0x1e0 kernel/fork.c:358 finish_task_switch+0x489/0x650 kernel/sched/core.c:2692 context_switch kernel/sched/core.c:2811 [inline] __schedule+0x7c0/0x1cd0 kernel/sched/core.c:3384 preempt_schedule_irq+0xb5/0x140 kernel/sched/core.c:3611 retint_kernel+0x1b/0x2d RIP: 0010:is_module_text_address+0x1/0x4a kernel/module.c:4321 RSP: 0018:ffff88820b8e7218 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 1ffffffff0f837ad RDX: 0000000000000000 RSI: ffffffff830eac2c RDI: 0000000000000000 RBP: ffff88820b8e7238 R08: 0000000000000001 R09: ffff88820b8e72d8 R10: ffff88820b8e72a8 R11: ffff88820b8e72b8 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888059c9e600 R15: ffff88821f8b5080 __kernel_text_address+0xd/0x40 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_frame.c:18 [inline] unwind_get_return_address+0x61/0xa0 arch/x86/kernel/unwind_frame.c:13 __save_stack_trace+0x7b/0xd0 arch/x86/kernel/stacktrace.c:45 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 save_stack+0x45/0xd0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc mm/kasan/kasan.c:551 [inline] kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:529 kasan_slab_alloc+0xf/0x20 mm/kasan/kasan.c:489 slab_post_alloc_hook mm/slab.h:442 [inline] slab_alloc mm/slab.c:3390 [inline] kmem_cache_alloc+0x11b/0x780 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] inode_alloc_security security/selinux/hooks.c:233 [inline] selinux_inode_alloc_security+0xb6/0x2a0 security/selinux/hooks.c:2893 security_inode_alloc+0x94/0xd0 security/security.c:438 inode_init_always+0x552/0xaf0 fs/inode.c:167 alloc_inode+0x81/0x180 fs/inode.c:216 new_inode_pseudo+0x19/0xf0 fs/inode.c:891 new_inode+0x1f/0x40 fs/inode.c:920 __ext4_new_inode+0x32c/0x4860 fs/ext4/ialloc.c:837 ext4_create+0x1da/0x4f0 fs/ext4/namei.c:2478 lookup_open+0x11a6/0x1860 fs/namei.c:3240 do_last fs/namei.c:3331 [inline] path_openat+0xfca/0x3f70 fs/namei.c:3566 do_filp_open+0x18e/0x250 fs/namei.c:3600 do_sys_open+0x2c5/0x430 fs/open.c:1084 SYSC_open fs/open.c:1102 [inline] SyS_open+0x2d/0x40 fs/open.c:1097 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45af49 RSP: 002b:00007f57284a3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49 RDX: 0000000000000000 RSI: 0000000000141042 RDI: 0000000020000000 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f57284a46d4 R13: 00000000004fffbf R14: 00000000004e0808 R15: 00000000ffffffff