[Bug 988374] Re: brctl setportprio fails silently

[Steve Langasek]

** Bug watch added: Debian Bug tracker #988374
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988374

** Also affects: bridge-utils (Debian) via
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988374
   Importance: Unknown
       Status: Unknown

** Bug watch added: Debian Bug tracker #574363
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=574363

** Changed in: bridge-utils (Debian)
 Remote watch: Debian Bug tracker #988374 => Debian Bug tracker #574363

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

Title:
  brctl setportprio fails silently

Status in “bridge-utils” package in Ubuntu:
  New
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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