[Bug 988374] Re: brctl setportprio fails silently

[Robie Basak]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.

This bug is marked as fixed in the Debian bug you linked, in version
1.5-1. Ubuntu will have carried this change since Oneiric, in version
1.5-2ubuntu1. Thus this bug is already fixed in the current development
release, so I'm marking it as Fix Released.

I don't think that this is a high-impact bug and thus does not warrant
fixing in any previous stable release (see
https://wiki.ubuntu.com/StableReleaseUpdates#When).

** Changed in: bridge-utils (Ubuntu)
       Status: New => Fix Released

** Changed in: bridge-utils (Ubuntu)
   Importance: Undecided => Low

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https://bugs.launchpad.net/bugs/988374

Title:
  brctl setportprio fails silently

Status in “bridge-utils” package in Ubuntu:
  Fix Released
Status in “bridge-utils” package in Debian:
  Unknown

Bug description:
  Hi, when I issue a brctl setportprio command specifying priorities
  highen than 63 the command fails silently, thus the priority of the
  port is not changed:

  brctl setportprio BRVAL VALSEV 32768

  it gives no output and the priority is not changed. If we analyze the
  command using strace:

   strace brctl setportprio BRVAL VALSEV 32768
  execve("/usr/sbin/brctl", ["brctl", "setportprio", "BRVAL", "VALSEV", "32768"], [/* 17 vars */]) = 0
  brk(0)                                  = 0xac6000
  access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
  mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe953afb000
  access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
  open("/etc/ld.so.cache", O_RDONLY)      = 3
  fstat(3, {st_mode=S_IFREG|0644, st_size=17295, ...}) = 0
  mmap(NULL, 17295, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fe953af6000
  close(3)                                = 0
  access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
  open("/lib/libc.so.6", O_RDONLY)        = 3
  read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\355\1\0\0\0\0\0"..., 832) = 832
  fstat(3, {st_mode=S_IFREG|0755, st_size=1572232, ...}) = 0
  mmap(NULL, 3680296, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fe95355b000
  mprotect(0x7fe9536d5000, 2093056, PROT_NONE) = 0
  mmap(0x7fe9538d4000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x179000) = 0x7fe9538d4000
  mmap(0x7fe9538d9000, 18472, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fe9538d9000
  close(3)                                = 0
  mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe953af5000
  mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe953af4000
  mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe953af3000
  arch_prctl(ARCH_SET_FS, 0x7fe953af4700) = 0
  mprotect(0x7fe9538d4000, 16384, PROT_READ) = 0
  mprotect(0x606000, 4096, PROT_READ)     = 0
  mprotect(0x7fe953afd000, 4096, PROT_READ) = 0
  munmap(0x7fe953af6000, 17295)           = 0
  socket(PF_FILE, SOCK_STREAM, 0)         = 3
  brk(0)                                  = 0xac6000
  brk(0xae7000)                           = 0xae7000
  open("/sys/class/net/VALSEV/brport/priority", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 4
  fstat(4, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0
  mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe953afa000
  write(4, "32768\n", 6)                  = -1 ERANGE (Numerical result out of range)
  close(4)                                = 0
  munmap(0x7fe953afa000, 4096)            = 0
  exit_group(0)                           = ?

  The release is Ubuntu 10.04 LTS and bridge-utils is 1.4-5ubuntu2.

  Regards.

  Eduardo

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