kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Björn Ramberg, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect 1132789
When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

To see what would be collected first, one may execute at terminal:
apport-cli -f -p linux --save bug.apport

** Tags added: needs-kernel-logs

** Tags removed: kernel-bug-exists-upstream
** Tags added: kernel-bug-exists-upstream-v3.8 needs-upstream-testing

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

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https://bugs.launchpad.net/bugs/1132789

Title:
  linux-image-3.2.0-38-generic & winbind issue

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  On ubuntu 12.04.1 client with authorized Windows AD account (through
  samba/winbind 3.6.3), there seems to be a bug when kernel 3.2.0-38 is
  applied. ps or pgrep is causing a "cannot allocate memory" error and
  the cpu is temporarily maxed out more or less.

  An strace from ps running on -38 kernel (Ubuntu 3.2.0-38.60-generic
  3.2.37) gives:

  mmap(NULL, 135168, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4053c48000
  mremap(0x7f4053c48000, 135168, 266240, MREMAP_MAYMOVE) = 0x7f4053c07000
  mremap(0x7f4053c07000, 266240, 528384, MREMAP_MAYMOVE) = 0x7f4053b86000
  mremap(0x7f4053b86000, 528384, 1052672, MREMAP_MAYMOVE) = 0x7f4052e78000
  mremap(0x7f4052e78000, 1052672, 2101248, MREMAP_MAYMOVE) = 0x7f4052c77000
  mremap(0x7f4052c77000, 2101248, 4198400, MREMAP_MAYMOVE) = 0x7f4052876000
  mremap(0x7f4052876000, 4198400, 8392704, MREMAP_MAYMOVE) = 0x7f4052075000
  mremap(0x7f4052075000, 8392704, 16781312, MREMAP_MAYMOVE) = 0x7f4051074000
  mremap(0x7f4051074000, 16781312, 33558528, MREMAP_MAYMOVE) = 0x7f404f073000
  mremap(0x7f404f073000, 33558528, 67112960, MREMAP_MAYMOVE) = 0x7f404b072000
  mremap(0x7f404b072000, 67112960, 134221824, MREMAP_MAYMOVE) = 0x7f4043071000
  mremap(0x7f4043071000, 134221824, 268439552, MREMAP_MAYMOVE) = 0x7f4033070000
  mremap(0x7f4033070000, 268439552, 536875008, MREMAP_MAYMOVE) = 0x7f401306f000
  mremap(0x7f401306f000, 536875008, 1073745920, MREMAP_MAYMOVE) = 0x7f3fd306e000
  mremap(0x7f3fd306e000, 1073745920, 2147487744, MREMAP_MAYMOVE) = -1 EFAULT (Bad address)
  mmap(NULL, 2147487744, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1     ENOMEM (Cannot allocate memory)
  brk(0x8074e000)                         = 0x745000
  mmap(NULL, 2147618816, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1     ENOMEM (Cannot allocate memory)
  open("/sys/devices/system/cpu/online", O_RDONLY|O_CLOEXEC) = 6
  read(6, "0\n", 8192)                    = 2
  close(6)                                = 0
  mmap(NULL, 134217728, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) =     0x7f3ecb04c000
  munmap(0x7f3ecb04c000, 16465920)        = 0
  munmap(0x7f3ed0000000, 50642944)        = 0
  mprotect(0x7f3ecc000000, 135168, PROT_READ|PROT_WRITE) = 0
  mmap(NULL, 2147487744, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1     ENOMEM (Cannot allocate memory)
  write(2, "xrealloc: realloc(-2147483648) f"..., 37xrealloc: realloc(-2147483648) failed) = 37
  write(2, "Cannot allocate memory\n", 23Cannot allocate memory
  ) = 23
  exit_group(1)                           = ?

  If i go back to 37, it works fine again.

  Also seen on server 12.04  http://askubuntu.com/questions/258180/why-
  does-running-ps-results-in-cannot-allocate-memory-error/259253#259253

  attached dump is from virtualbox instance, same result regardless of
  virtual machine or not.

  Br,

  Björn

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