The server is getting highly loaded and slow to respond where node_exporter threads are stuck in busy-wait loop on siglock spinlock

Issue

• The server is getting highly loaded and slow to respond where node_exporter threads are stuck in busy-wait loop on siglock spinlock.

PID: 2628929  TASK: ffffa0efec818000  CPU: 104  COMMAND: "node_exporter"
        ...
    [exception RIP: native_queued_spin_lock_slowpath+324]
    RIP: ffffffff9f156154  RSP: ffffad2fcd613df8  RFLAGS: 00000046
    RAX: 0000000000000000  RBX: ffffa0f2110f4a08  RCX: 0000000000000051
    RDX: ffffa127ffa2bc00  RSI: 0000000001a40000  RDI: ffffa0f2110f4a08
    RBP: ffffad2fcd613f58   R8: ffffa0f0afffc538   R9: ffffa0f0f5320480
    R10: ffffa0a9c0002780  R11: ffffa0e907aee200  R12: ffffad2fcd613eb0
    R13: ffffad2fcd613e90  R14: 0000000000000000  R15: 0000000000000000
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
--- <NMI exception stack> ---
 #5 [ffffad2fcd613df8] native_queued_spin_lock_slowpath at ffffffff9f156154
 #6 [ffffad2fcd613df8] _raw_spin_lock_irq at ffffffff9f9dda85
 #7 [ffffad2fcd613e00] get_signal at ffffffff9f10441e
 #8 [ffffad2fcd613e58] do_signal at ffffffff9f022ee6
 #9 [ffffad2fcd613f20] exit_to_usermode_loop at ffffffff9f003cb9
#10 [ffffad2fcd613f38] do_syscall_64 at ffffffff9f0044ec
#11 [ffffad2fcd613f50] entry_SYSCALL_64_after_hwframe at ffffffff9fa000a9
    RIP: 000000000040780e  RSP: 000000c0025ab5e8  RFLAGS: 00000206
    RAX: fffffffffffffdff  RBX: 000000000000002a  RCX: 000000000040780e
    RDX: 0000000000000080  RSI: 000000c0025ab710  RDI: 000000000000002a
    RBP: 000000c0025ab628   R8: 0000000000000000   R9: 0000000000000000
    R10: 0000000000000000  R11: 0000000000000206  R12: 0000000000000000
    R13: 0000000000000000  R14: 000000c000463ba0  R15: 00007f5be87a8a5a
    ORIG_RAX: 0000000000000000  CS: 0033  SS: 002b