kernel-packages team mailing list archive

[Rafael David Tinoco <rafael.tinoco@xxxxxxxxxxxxx>]

----

194 if (cpumask_andnot(to_cpumask(f->flush_cpumask), cpumask, cpumask_of(smp_processor_id()))) { 
0xffffffff81046865 <+85>: mov %gs:0xca10,%edx 
0xffffffff8104688e <+126>: test %rax,%rax 
0xffffffff81046899 <+137>: jne 0xffffffff81046900 <flush_tlb_others_ipi+240> 

195 /* 
196 * We have to send the IPI only to 
197 * CPUs affected. 
198 */ 
199 apic->send_IPI_mask(to_cpumask(f->flush_cpumask), 
0xffffffff81046900 <+240>: mov 0xc95c19(%rip),%rax # 0xffffffff81cdc520 
0xffffffff8104690e <+254>: lea 0x18(%r13),%rdi 
0xffffffff81046912 <+258>: callq *0xd0(%rax) 

200 INVALIDATE_TLB_VECTOR_START + sender); 
0xffffffff81046907 <+247>: lea 0xcf(%r14),%esi 

201 
202 while (!cpumask_empty(to_cpumask(f->flush_cpumask))) 
0xffffffff81046918 <+264>: cmpq $0x0,-0x7e1f2f68(%r12) 
0xffffffff81046921 <+273>: je 0xffffffff8104689b <flush_tlb_others_ipi+139> 
0xffffffff81046927 <+279>: nopw 0x0(%rax,%rax,1) 
0xffffffff81046932 <+290>: cmpq $0x0,0x18(%r13) 
0xffffffff81046937 <+295>: jne 0xffffffff81046930 <flush_tlb_others_ipi+288> 
0xffffffff81046939 <+297>: jmpq 0xffffffff8104689b <flush_tlb_others_ipi+139> 
0xffffffff8104693e: xchg %ax,%ax 

203 cpu_relax(); 
204 } 

----

#9 [ffff880037695dc0] native_flush_tlb_others at ffffffff81046abe 
#10 [ffff880037695dd0] flush_tlb_mm at ffffffff81046b8b 
...

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1467955

Title:
  Precise BUG: soft lockup in flush_tlb_others_ipi

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Precise:
  In Progress

Bug description:
  The following stack trace (with kernel dump) was brought to me:

  """
  [1796904.032010] BUG: soft lockup - CPU#0 stuck for 23s! [java:6383] 
  [1796904.036004] Modules linked in: isofs psmouse virtio_balloon serio_raw acpiphp floppy 
  [1796904.036004] CPU 0 
  [1796904.036004] Modules linked in: isofs psmouse virtio_balloon serio_raw acpiphp floppy 
  [1796904.036004] 
  [1796904.036004] Pid: 6383, comm: java Not tainted 3.2.0-76-virtual #111-Ubuntu OpenStack Foundation OpenStack Nova 
  [1796904.036004] RIP: 0010:[<ffffffff81046922>] [<ffffffff81046922>] flush_tlb_others_ipi+0x122/0x130 
  [1796904.036004] RSP: 0018:ffff880065791d58 EFLAGS: 00000202 
  [1796904.036004] RAX: 0000000000000002 RBX: ffffea0003470bf0 RCX: 0000000000000002 
  [1796904.036004] RDX: 0000000000000002 RSI: 0000000000000040 RDI: 0000000000000296 
  [1796904.036004] RBP: ffff880065791d88 R08: ffffffff81e0c0a0 R09: 0000000000000040 
  [1796904.036004] R10: ffffea0003471240 R11: 0000000000000000 R12: ffff880065791e20 
  [1796904.036004] R13: ffff880059e96f20 R14: ffff880116249848 R15: 00ff880065791d78 
  [1796904.036004] FS: 00007f83612d2700(0000) GS:ffff88011fc00000(0000) knlGS:0000000000000000 
  [1796904.036004] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 
  [1796904.036004] CR2: 00007f83be381420 CR3: 0000000118be0000 CR4: 00000000000006f0 
  [1796904.036004] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 
  [1796904.036004] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 
  [1796917.981999] Process java (pid: 6383, threadinfo ffff880065790000, task ffff880053c0dbc0) 
  [1796917.981999] Stack: 
  [1796917.981999] 00007f83612ccfff ffff880059e96f20 ffff880116200e00 ffff8801162010d0 
  [1796917.981999] 00007f83612cd000 ffff880116200e00 ffff880065791d98 ffffffff81046aae 
  [1796917.981999] ffff880065791db8 ffffffff81046b7b 00007f83611d5000 ffff880065791e20 
  [1796917.981999] Call Trace: 
  [1796917.982394] ata2: lost interrupt (Status 0x58) 
  [1796917.981999] [<ffffffff81046aae>] native_flush_tlb_others+0xe/0x10 
  [1796917.981999] [<ffffffff81046b7b>] flush_tlb_mm+0x5b/0xa0 
  [1796917.981999] [<ffffffff8113ba06>] tlb_flush_mmu+0x46/0x90 
  [1796917.981999] [<ffffffff8113ba64>] tlb_finish_mmu+0x14/0x40 
  [1796917.981999] [<ffffffff8113e3a7>] zap_page_range+0xb7/0xd0 
  [1796917.981999] [<ffffffff8113a85d>] madvise_vma+0xfd/0x140 
  [1796917.981999] [<ffffffff8107b917>] ? __set_task_blocked+0x37/0x80 
  [1796917.981999] [<ffffffff81095b27>] ? getnstimeofday+0x57/0xe0 
  [1796917.981999] [<ffffffff8113aa7e>] sys_madvise+0x1de/0x280 
  [1796917.981999] [<ffffffff81666b82>] system_call_fastpath+0x16/0x1b 
  [1796917.981999] Code: 41 8d b6 cf 00 00 00 49 8d 7d 18 ff 90 d0 00 00 00 49 83 bc 24 98 c0 e0 81 00 0f 84 74 ff ff ff 66 0f 1f 84 00 00 00 00 00 f3 90 <49> 83 7d 18 00 75 f7 e9 5d ff ff ff 66 90 55 48 89 e5 66 66 66 
  [1796917.981999] Call Trace: 
  [1796917.981999] [<ffffffff81046aae>] native_flush_tlb_others+0xe/0x10 
  [1796917.981999] [<ffffffff81046b7b>] flush_tlb_mm+0x5b/0xa0 
  [1796917.981999] [<ffffffff8113ba06>] tlb_flush_mmu+0x46/0x90 
  [1796917.981999] [<ffffffff8113ba64>] tlb_finish_mmu+0x14/0x40 
  [1796917.981999] [<ffffffff8113e3a7>] zap_page_range+0xb7/0xd0 
  [1796917.981999] [<ffffffff8113a85d>] madvise_vma+0xfd/0x140 
  [1796917.981999] [<ffffffff8107b917>] ? __set_task_blocked+0x37/0x80 
  [1796917.981999] [<ffffffff81095b27>] ? getnstimeofday+0x57/0xe0 
  [1796917.981999] [<ffffffff8113aa7e>] sys_madvise+0x1de/0x280 
  [1796917.981999] [<ffffffff81666b82>] system_call_fastpath+0x16/0x1b 
  [1796917.992066] ata2: drained 65536 bytes to clear DRQ
  """

  Analysis Bellow...

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1467955/+subscriptions