Databases
StackOverflow2013
Postsdbo
POHow to tell the difference between soft lockup in kernel and softlockup in userspace?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow to tell the difference between soft lockup in kernel and softlockup in userspace?
    primarykey
    data
    text
    <p>I have the below lockup. Is this indicating that slic_test pid 5207 is the offender, or is it only showing that because the current macro in the kernel is still pointing to the userspace process which made the system call into my driver? Furthermore - irq event stamp 0 ... what exactly does the irq event stamp represent? It can't be number of interrupts since boot... there were definitely more than 0 after 88798 seconds...</p> <p>The system is uniprocessor with CONFIG_SMP disabled.</p> <pre><code>[88798.449628] BUG: soft lockup - CPU#0 stuck for 61s! [slic_test:5207] [88798.449628] Modules linked in: slic_xxxx leds_xxxx vortex86_spi dm_mirror dm_log dm_multipath dm_mod ohci_hcd ehci_hcd r6040 vortex86_wdt vortex86_gpio [last un] [88798.449628] irq event stamp: 0 [88798.449628] hardirqs last enabled at (0): [&lt;00000000&gt;] 0x0 [88798.449628] hardirqs last disabled at (0): [&lt;c0115563&gt;] copy_process+0x233/0x1090 [88798.449628] softirqs last enabled at (0): [&lt;c0115563&gt;] copy_process+0x233/0x1090 [88798.449628] softirqs last disabled at (0): [&lt;00000000&gt;] 0x0 [88798.449628] [88798.449628] Pid: 5207, comm: slic_test Not tainted (2.6.27.62 #11) [88798.449628] EIP: 0060:[&lt;c011b6b5&gt;] EFLAGS: 00000246 CPU: 0 [88798.449628] EIP is at __do_softirq+0x45/0xb0 [88798.449628] EAX: 00000000 EBX: 00000082 ECX: 00000001 EDX: dfac5080 [88798.449628] ESI: c0696120 EDI: 0000000a EBP: df3bdf8c ESP: df3bdf80 [88798.449628] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 [88798.449628] CR0: 8005003b CR2: b7622780 CR3: 1f3c8000 CR4: 00000000 [88798.449628] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [88798.449628] DR6: ffff0ff0 DR7: 00000400 [88798.449628] [&lt;c011b766&gt;] do_softirq+0x46/0x50 [88798.449628] [&lt;c011bad5&gt;] irq_exit+0x45/0x50 [88798.449628] [&lt;c01057ba&gt;] do_IRQ+0x4a/0x90 [88798.449628] [&lt;c0103e68&gt;] common_interrupt+0x28/0x30 [88798.449628] ======================= </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USPeter L.
    1. USbodangly
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POHow to tell the difference between soft lockup in kernel and softlockup in userspace?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POHow to tell the difference between soft lockup in kernel and softlockup in userspace?
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    3. VO
      singulars
      1. POHow to tell the difference between soft lockup in kernel and softlockup in userspace?
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload