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[Launchpad Bug Tracker <1703944@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1703944

Title:
  ethtool - "vmalloc: allocation failure: 0 bytes" message

Status in linux package in Ubuntu:
  Expired
Status in linux source package in Xenial:
  Won't Fix

Bug description:
  If ->get_regs_len() callback return 0, we allocate 0 bytes of memory,
  what print the following warning in kern.log :

  vmalloc: allocation failure: 0 bytes
  ethtool: page allocation failure: order:0, mode:0x24080c2
  CPU: 21 PID: 7668 Comm: ethtool Tainted: G 4.4.0-62-generic #83-Ubuntu
  Hardware name:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  0000000000000286 000000005949f325 ffff8801fddcfba8 ffffffff813f7c63
  00000000024080c2 ffffffff81ccfe30 ffff8801fddcfc38 ffffffff8119498a
  ffffffff81ccfe30 ffff8801fddcfbc8 0000000000000018 ffff8801fddcfc48
  Call Trace:
  [<ffffffff813f7c63>] dump_stack+0x63/0x90
  [<ffffffff8119498a>] warn_alloc_failed+0xfa/0x150
  [<ffffffff811d1082>] __vmalloc_node_range+0x202/0x290
  [<ffffffff8183812e>] ? _raw_spin_unlock_bh+0x1e/0x20
  [<ffffffff811d1214>] vzalloc+0x54/0x60
  [<ffffffff81733c57>] ? dev_ethtool+0xfc7/0x1ef0
  [<ffffffff81733c57>] dev_ethtool+0xfc7/0x1ef0
  [<ffffffff81746362>] dev_ioctl+0x182/0x580
  [<ffffffff8170d4a2>] sock_do_ioctl+0x42/0x50
  [<ffffffff8170d9a2>] sock_ioctl+0x1d2/0x290
  [<ffffffff812227af>] do_vfs_ioctl+0x29f/0x490
  [<ffffffff8106b514>] ? __do_page_fault+0x1b4/0x400
  [<ffffffff81222a19>] SyS_ioctl+0x79/0x90
  [<ffffffff818385f2>] entry_SYSCALL_64_fastpath+0x16/0x71

  break-fix: - 3808d34838184fd29088d6b3a364ba2f1c018fb6

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