Hard lockup at prepare_to_wait()

Solution Verified - Updated -


  • System crashed due to hard lockup which showed the below call trace in the process
crash> bt
PID: 66     TASK: ffff881fd3705c00  CPU: 4   COMMAND: "rcuos/23"
 #0 [ffff881ffff05e70] crash_nmi_callback at ffffffff81045982
 #1 [ffff881ffff05e80] nmi_handle at ffffffff8163f719
 #2 [ffff881ffff05ec8] do_nmi at ffffffff8163f830
 #3 [ffff881ffff05ef0] end_repeat_nmi at ffffffff8163eb53
    [exception RIP: _raw_spin_lock_irqsave+0x3d]
    RIP: ffffffff8163dfdd  RSP: ffff881fd3733dd0  RFLAGS: 00000006
    RAX: 000000000000552e  RBX: ffff881fd3733e80  RCX: 000000000000f19a
    RDX: 000000000000f198  RSI: 000000000000f19a  RDI: ffffffff819a71c8
    RBP: ffff881fd3733dd0   R8: 0000000000000246   R9: 0000000000000003
    R10: 0000000000000000  R11: 0000000000000001  R12: ffffffff819a71c8
    R13: 0000000000000001  R14: ffffffff819a7140  R15: ffffffff819a71c8
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
--- <NMI exception stack> ---
 #4 [ffff881fd3733dd0] _raw_spin_lock_irqsave at ffffffff8163dfdd
 #5 [ffff881fd3733dd8] prepare_to_wait at ffffffff810a6877
 #6 [ffff881fd3733e10] rcu_nocb_kthread at ffffffff8112438e
 #7 [ffff881fd3733ec8] kthread at ffffffff810a5b8f
 #8 [ffff881fd3733f50] ret_from_fork at ffffffff81646bd8


  • Red Hat Enterprise Linux 7
    • kernel-3.10.0-327.41.3.el7

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In