Article ID: 118779, created on May 20, 2015, last review on May 20, 2015

  • Applies to:
  • Virtuozzo 6.0
  • Virtuozzo containers for Linux
  • Virtuozzo hypervisor

Síntomas

El nodo se bloquea y en dmesg se observan los siguientes mensajes:

<4>[ 2642.071814] BUG: unable to handle kernel NULL pointer dereference at 00000000000002d0
<4>[ 2642.071815] Pid: 13643, comm: logrotate veid: 44526 Tainted: P           ---------------    2.6.32-042stab083.2 #1 042stab083_2 Dell Inc. PowerEdge R720/0XH7F2
<4>[ 2642.072169] RIP: 0010:[<ffffffff811abe18>]  [<ffffffff811abe18>] do_coredump+0x68/0xc10
<4>[ 2642.072399] RSP: 0018:ffff885e38cd3c38  EFLAGS: 00010246
<4>[ 2642.072519] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000418004fc
<4>[ 2642.072642] RDX: ffff885e38cd3f58 RSI: 000000000000000b RDI: 000000000000000b
<4>[ 2642.072767] RBP: ffff885e38cd3d88 R08: 0000000000020000 R09: 0000000000000000
<4>[ 2642.072891] R10: 0000000000000000 R11: 0000000000000001 R12: ffff885e38f9c980
<4>[ 2642.073015] R13: ffff885e38cd3e58 R14: 000000000000000b R15: 000000000000000b
<4>[ 2642.073140] FS:  00007f8c33aa9700(0000) GS:ffff8830f1140000(0000) knlGS:0000000000000000
<4>[ 2642.073365] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
<4>[ 2642.073489] CR2: 00000000000002d0 CR3: 0000005dd9c9a000 CR4: 00000000000407e0
<4>[ 2642.073614] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<4>[ 2642.073738] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
<4>[ 2642.073861] Process logrotate (pid: 13643, veid: 44526, threadinfo ffff885e38cd2000, task ffff885e38f9c980)
<4>[ 2642.074092] Stack:
<4>[ 2642.074201]  ffff885e38cd3c98 ffffffff8105f0f9 0000000000cd3c98 ffff8830f115c700
<4>[ 2642.074342] <d> ffff885e38cd3c78 ffffffff8118cb10 ffff883017e13e00 ffff883017e13e00
<4>[ 2642.074591] <d> ffff885e38cd3c98 0000000000000082 ffff883017e13e00 ffff88600c3355d0
<4>[ 2642.074947] Call Trace:
<4>[ 2642.075062]  [<ffffffff8105f0f9>] ? find_busiest_queue+0x69/0x150
<4>[ 2642.075183]  [<ffffffff8118cb10>] ? ub_slab_ptr+0x20/0x90
<4>[ 2642.075301]  [<ffffffff81089b05>] ? __sigqueue_free+0x45/0x50
<4>[ 2642.075516]  [<ffffffff8108db4d>] get_signal_to_deliver+0x1ed/0x460
<4>[ 2642.075636]  [<ffffffff8100a2c5>] do_signal+0x75/0x800
<4>[ 2642.075751]  [<ffffffff8100bc4e>] ? apic_timer_interrupt+0xe/0x20
<4>[ 2642.075869]  [<ffffffff8100aae0>] do_notify_resume+0x90/0xc0
<4>[ 2642.075985]  [<ffffffff8100b102>] ? system_call_fastpath+0x16/0x1b
<4>[ 2642.076104]  [<ffffffff81077967>] ? sys_exit_group+0x7/0x20
<4>[ 2642.076219]  [<ffffffff8100bb9c>] retint_signal+0x48/0x8c
<4>[ 2642.076334]  [<ffffffff81077967>] ? sys_exit_group+0x7/0x20
<4>[ 2642.076450]  [<ffffffff8100b102>] ? system_call_fastpath+0x16/0x1b
<4>[ 2642.076564] Code: fe 48 8b 80 80 07 00 00 41 89 f7 48 8b 80 a8 02 00 00 48 c7 45 90 00 00 00 00 48 89 7d 80 48 89 55 88 48 89 45 98 e8 c8 00 f4 ff <4c> 8b a3 d0 02 00 00 4d 85 e4 74 51 49 83 7c 24 28 00 74 49 e8
<1>[ 2642.077305] RIP  [<ffffffff811abe18>] do_coredump+0x68/0xc10
<4>[ 2642.077430]  RSP <ffff885e38cd3c38>
<4>[ 2642.077547] CR2: 00000000000002d0

Causa

Se trata de un fallo del kernel cuyo ID es PCLIN-31854.

Resolución

La corrección de dicho fallo se implementará en una de las próximas actualizaciones del producto.

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