System Hang or Soft Lockup Seen on Racing d_invalidate Threads

(Doc ID 2343887.1)

Last updated on JANUARY 07, 2018

Applies to:

Linux OS - Version Oracle Linux 6.9 with Unbreakable Enterprise Kernel [4.1.12] and later
Linux x86-64

Symptoms

KERNEL: 4.1.12-61.47.1.el6uek.x86_64.nano/vmlinux
DUMPFILE: vmcore [PARTIAL DUMP]
CPUS: 88
DATE: Mon Oct 23 07:50:46 2017
UPTIME: 74 days, 16:20:29
LOAD AVERAGE: 29.55, 13.67, 8.27
TASKS: 8507
NODENAME: hostname.xxx.com
RELEASE: 4.1.12-61.47.1.el6uek.x86_64

 

PID: 292899 TASK: ffff8835f68baa00 CPU: 40 COMMAND: "oracle_292899_u"
#0 [ffff897d7dc83c90] machine_kexec at ffffffff8105de40
#1 [ffff897d7dc83d00] crash_kexec at ffffffff81110318
#2 [ffff897d7dc83dd0] panic at ffffffff81698bdc
#3 [ffff897d7dc83e50] watchdog_timer_fn at ffffffff81135d89
#4 [ffff897d7dc83e90] __run_hrtimer at ffffffff810efce7
#5 [ffff897d7dc83ee0] hrtimer_interrupt at ffffffff810f00d2
#6 [ffff897d7dc83f70] local_apic_timer_interrupt at ffffffff81054629
#7 [ffff897d7dc83f90] smp_apic_timer_interrupt at ffffffff816a0af1
#8 [ffff897d7dc83fb0] apic_timer_interrupt at ffffffff8169ea3e
--- <IRQ stack> ---
#9 [ffff8825139cf938] apic_timer_interrupt at ffffffff8169ea3e
[exception RIP: _raw_spin_lock+50]
RIP: ffffffff8169d652 RSP: ffff8825139cf9e8 RFLAGS: 00000206
RAX: 000000000000e76c RBX: ffff88e0f6edebc0 RCX: ffff8825139cf9e8
RDX: 000000000000e77e RSI: 000000000000e77e RDI: ffff88285b7dbe58
RBP: ffff8825139cf9f8 R8: 000000000000745a R9: 0000000000000012
R10: 000000000000e76c R11: 0000000000000000 R12: ffff88e0f6edeb38
R13: ffff8835a8358770 R14: ffffffff81220c4d R15: ffff8825139cf968
ORIG_RAX: ffffffffffffff10 CS: 0010 SS: 0018
#10 [ffff8825139cfa00] lockref_put_or_lock at ffffffff81326698
#11 [ffff8825139cfa30] shrink_dentry_list at ffffffff8121ea4b
#12 [ffff8825139cfa80] d_invalidate at ffffffff8121efc6
#13 [ffff8825139cfae0] lookup_fast at ffffffff81212c25
#14 [ffff8825139cfb50] link_path_walk at ffffffff81212eef
#15 [ffff8825139cfbd0] path_init at ffffffff812131d8
#16 [ffff8825139cfc90] path_lookupat at ffffffff81213591
#17 [ffff8825139cfd20] filename_lookup at ffffffff81213b81
#18 [ffff8825139cfd60] user_path_at_empty at ffffffff81214529
#19 [ffff8825139cfe30] user_path_at at ffffffff81214581
#20 [ffff8825139cfe40] vfs_fstatat at ffffffff8120a799
#21 [ffff8825139cfea0] vfs_stat at ffffffff8120a88b
#22 [ffff8825139cfeb0] SYSC_newstat at ffffffff8120ac0f
#23 [ffff8825139cff40] sys_newstat at ffffffff8120ac4e
#24 [ffff8825139cff50] system_call_fastpath at ffffffff8169db6e

 

 

 

Cause

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