WARNING: CPU: xx PID: xxx at arch/x86/kernel/smp.c:128 native_smp_send_reschedule+0x34/0x40

Issue

• Multiple warnings triggered from native_smp_send_reschedule() upon sending reschedule IPI followed by the crash.

<4>[593202.698414] ------------[ cut here ]------------
<4>[593202.698415] sched: Unexpected reschedule of offline CPU#79!
<4>[593202.698419] WARNING: CPU: 78 PID: 482 at arch/x86/kernel/smp.c:128 native_smp_send_reschedule+0x34/0x40
<4>[593202.698420] Modules linked in: [...]
<4>[593202.698575] Features: eBPF/sock eBPF/event
<4>[593202.698581] CPU: 78 PID: 482 Comm: ksoftirqd/78 Tainted: G      D W  OE    --------- -  - 4.18.0-305.34.2.el8_4.x86_64 #1
<4>[593202.698582] Hardware name: HPE ProLiant DL385 Gen10 Plus/ProLiant DL385 Gen10 Plus, BIOS A42 02/10/2022
<4>[593202.698585] RIP: 0010:native_smp_send_reschedule+0x34/0x40
<4>[593202.698587] Code: 05 c1 b1 7c 01 73 15 48 8b 05 38 74 13 01 be fd 00 00 00 48 8b 40 30 e9 6a cc ba 00 89 fe 48 c7 c7 10 ef 8a 8e e8 45 b4 08 00 <0f> 0b c3 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 53 48 83 ec 20
<4>[593202.698588] RSP: 0018:ffffa5cbcdd1f268 EFLAGS: 00010086
<4>[593202.698591] RAX: 0000000000000000 RBX: ffff98e6bede9f40 RCX: 0000000000000007
<4>[593202.698593] RDX: 0000000000000007 RSI: 0000000000000002 RDI: ffff98e6bed96800
<4>[593202.698594] RBP: ffff98e24b6f4740 R08: 0000000000000002 R09: 0000000000029780
<4>[593202.698596] R10: 0004f1eab6421a56 R11: 00000000000ad224 R12: 0000000000000004
<4>[593202.698597] R13: ffffa5cbcdd1f2b8 R14: 0000000000000087 R15: ffff98e6bedc0000
<4>[593202.698599] FS:  0000000000000000(0000) GS:ffff98e6bed80000(0000) knlGS:0000000000000000
<4>[593202.698600] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[593202.698602] CR2: 000000c044bfe000 CR3: 0000003da89ac000 CR4: 0000000000350ee0
<4>[593202.698603] Call Trace:
<4>[593202.698607]  check_preempt_curr+0x7a/0x90
<4>[593202.698609]  ttwu_do_wakeup+0x19/0x140
<4>[593202.698612]  try_to_wake_up+0x1a8/0x590
<4>[593202.698615]  pollwake+0x74/0x90
<4>[593202.698617]  ? wake_up_q+0x80/0x80
<4>[593202.698620]  __wake_up_common+0x7a/0x190
<4>[593202.698623]  __wake_up_common_lock+0x7c/0xc0
<4>[593202.698626]  ep_poll_callback+0x103/0x2c0
<4>[593202.698629]  __wake_up_common+0x7a/0x190
<4>[593202.698631]  __wake_up_common_lock+0x7c/0xc0
<4>[593202.698635]  sock_def_readable+0x37/0x60
<4>[593202.698637]  __netlink_sendskb+0x51/0x70
<4>[593202.698639]  netlink_unicast+0x212/0x260
<4>[593202.698644]  queue_userspace_packet+0x4af/0x5f0 [openvswitch]
<4>[593202.698650]  ovs_dp_upcall+0x38/0x60 [openvswitch]
<4>[593202.698654]  ovs_dp_process_packet+0x143/0x1d0 [openvswitch]
<4>[593202.698659]  clone_execute+0x1c3/0x1f0 [openvswitch]
<4>[593202.698664]  do_execute_actions+0x435/0xaa0 [openvswitch]
<4>[593202.698673]  ? nf_conntrack_tcp_packet+0x1e1/0xb00 [nf_conntrack]
<4>[593202.698681]  ? nf_conntrack_tcp_packet+0x34a/0xb00 [nf_conntrack]
<4>[593202.698689]  ? nf_conntrack_in+0x498/0x5e0 [nf_conntrack]
<4>[593202.698695]  ? flow_lookup.isra.17+0x95/0xf0 [openvswitch]
<4>[593202.698700]  ovs_execute_actions+0x48/0x100 [openvswitch]
<4>[593202.698705]  ovs_dp_process_packet+0x96/0x1d0 [openvswitch]
<4>[593202.698710]  ? ovs_ct_execute+0x192/0x7b0 [openvswitch]
<4>[593202.698714]  clone_execute+0x1c3/0x1f0 [openvswitch]
<4>[593202.698719]  do_execute_actions+0x435/0xaa0 [openvswitch]
<4>[593202.698722]  ? __kmalloc+0x102/0x240
<4>[593202.698726]  ? vxlan_rcv+0x333/0xfb0 [vxlan]
<4>[593202.698732]  ? flow_lookup.isra.17+0x95/0xf0 [openvswitch]
<4>[593202.698737]  ovs_execute_actions+0x48/0x100 [openvswitch]
<4>[593202.698741]  ovs_dp_process_packet+0x96/0x1d0 [openvswitch]
<4>[593202.698747]  ovs_vport_receive+0x6c/0xc0 [openvswitch]
<4>[593202.698750]  ? ip_protocol_deliver_rcu+0xdf/0x1d0
<4>[593202.698752]  ? ip_local_deliver_finish+0x4a/0x50
<4>[593202.698755]  ? ip_local_deliver+0x6b/0xe0
<4>[593202.698759]  ? napi_gro_receive+0xba/0xe0
<4>[593202.698764]  netdev_frame_hook+0xc0/0x180 [openvswitch]
<4>[593202.698767]  __netif_receive_skb_core+0x6a4/0xc40
<4>[593202.698770]  ? __switch_to_asm+0x41/0x70
<4>[593202.698775]  ? netdev_create+0x30/0x30 [openvswitch]
<4>[593202.698778]  ? __switch_to_asm+0x35/0x70
<4>[593202.698780]  ? __switch_to_asm+0x41/0x70
<4>[593202.698783]  process_backlog+0xae/0x160
<4>[593202.698785]  net_rx_action+0x149/0x3b0
<4>[593202.698788]  __do_softirq+0xd7/0x2d6
<4>[593202.698791]  ? sort_range+0x20/0x20
<4>[593202.698793]  run_ksoftirqd+0x26/0x40
<4>[593202.698796]  smpboot_thread_fn+0xc5/0x160
<4>[593202.698798]  kthread+0x116/0x130
<4>[593202.698800]  ? kthread_flush_work_fn+0x10/0x10
<4>[593202.698802]  ret_from_fork+0x22/0x40
<4>[593202.698805] ---[ end trace 6a6f58bcdc4abdf4 ]---
<4>[593202.698809] ------------[ cut here ]------------