rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5225/1:b..l rcu: (detected by 1, t=10503 jiffies, g=13017, q=1312 ncpus=2) task:klogd state:R running task stack:24104 pid:5225 tgid:5225 ppid:1 task_flags:0x400100 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5357 [inline] __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7288 irqentry_exit+0x6f/0x90 kernel/entry/common.c:197 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:unwind_next_frame+0x4d9/0x2390 arch/x86/kernel/unwind_orc.c:512 Code: 41 c6 07 01 48 c7 c2 e0 40 88 8b 4c 8b 6c 24 50 48 8d 72 04 4c 8d 62 05 48 89 f0 48 c1 e8 03 48 89 44 24 40 0f b6 04 28 84 c0 <48> 89 54 24 08 48 89 34 24 0f 85 4d 18 00 00 4c 89 e0 48 c1 e8 03 RSP: 0018:ffffc900031371f8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff901110b0 RCX: ffffffff901110b4 RDX: ffffffff90b9e0d2 RSI: ffffffff90b9e0d6 RDI: ffffffff8be33620 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff8172c195 R10: ffffc90003137318 R11: ffffffff81ac3810 R12: ffffffff90b9e0d7 R13: ffffc90003137318 R14: ffffc900031372c8 R15: ffffffff8172c195 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 save_stack+0xf5/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:308 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1395 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2895 discard_slab mm/slub.c:2753 [inline] __put_partials+0x156/0x1a0 mm/slub.c:3218 put_cpu_partial+0x17c/0x250 mm/slub.c:3293 __slab_free+0x2d5/0x3c0 mm/slub.c:4550 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:340 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4180 [inline] slab_alloc_node mm/slub.c:4229 [inline] kmem_cache_alloc_node_noprof+0x1bb/0x3c0 mm/slub.c:4281 __alloc_skb+0x112/0x2d0 net/core/skbuff.c:659 alloc_skb include/linux/skbuff.h:1336 [inline] alloc_skb_with_frags+0xca/0x890 net/core/skbuff.c:6665 sock_alloc_send_pskb+0x857/0x990 net/core/sock.c:2980 unix_dgram_sendmsg+0x461/0x1850 net/unix/af_unix.c:2153 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:729 __sys_sendto+0x3bd/0x520 net/socket.c:2228 __do_sys_sendto net/socket.c:2235 [inline] __se_sys_sendto net/socket.c:2231 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2231 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f31307a3407 RSP: 002b:00007ffe6ccc9460 EFLAGS: 00000202 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f3130653c80 RCX: 00007f31307a3407 RDX: 00000000000000a1 RSI: 00007ffe6ccc95a0 RDI: 0000000000000003 RBP: 00007ffe6ccc99d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffe6ccc99e8 R13: 00007ffe6ccc95a0 R14: 0000000000000086 R15: 00007ffe6ccc95a0 net_ratelimit: 17718 callbacks suppressed bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:96:15:4f:52:6c:d5, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:96:15:4f:52:6c:d5, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:96:15:4f:52:6c:d5, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) net_ratelimit: 20916 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:96:15:4f:52:6c:d5, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:96:15:4f:52:6c:d5, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:96:15:4f:52:6c:d5, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:96:15:4f:52:6c:d5, vlan:0)