tc segfault

[Jan Groenewald]

Binary package hint: iproute

root@kontiki:~/bin# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu hardy (development branch)"
root@kontiki:~/bin# modprobe sch_ingress
root@kontiki:~/bin# modprobe cls_fw
root@kontiki:~/bin# tc filter add dev eth0 parent ffff: protocol ip prio 50 u32 match ip dst 192.168.172.0/22 police rate 96kbit burst 15k drop flowid :1
What is "flowid"?
Illegal "police"
root@kontiki:~/bin# tc -s -d qdisc
Segmentation fault (core dumped)
root@kontiki:~/bin# tc -s -d qdisc
Segmentation fault (core dumped)
root@kontiki:~/bin# strace tc -s -d qdisc
execve("/sbin/tc", ["tc", "-s", "-d", "qdisc"], [/* 21 vars */]) = 0
brk(0) = 0x807e000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f58000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=77799, ...}) = 0
mmap2(NULL, 77799, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f45000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/tls/i686/cmov/libresolv.so.2", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0@!\0\000"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=67408, ...}) = 0
mmap2(NULL, 75972, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7f32000
mmap2(0xb7f41000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xf) = 0xb7f41000
mmap2(0xb7f43000, 6340, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f43000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/tls/i686/cmov/libm.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0@4\0\000"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=149328, ...}) = 0
mmap2(NULL, 147584, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7f0d000
mmap2(0xb7f30000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x23) = 0xb7f30000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/tls/i686/cmov/libdl.so.2", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0p\n\0\000"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=9684, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f0c000
mmap2(NULL, 12412, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7f08000
mmap2(0xb7f0a000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb7f0a000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/tls/i686/cmov/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\260e\1"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1364388, ...}) = 0
mmap2(NULL, 1369712, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7db9000
mmap2(0xb7f02000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x149) = 0xb7f02000
mmap2(0xb7f05000, 9840, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f05000
close(3) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7db8000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7db86b0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0
mprotect(0xb7f02000, 4096, PROT_READ) = 0
munmap(0xb7f45000, 77799) = 0
brk(0) = 0x807e000
brk(0x809f000) = 0x809f000
open("/proc/net/psched", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f57000
read(3, "000003e8 00000400 000f4240 3b9ac"..., 1024) = 36
close(3) = 0
munmap(0xb7f57000, 4096) = 0
socket(PF_NETLINK, SOCK_RAW, 0) = 3
setsockopt(3, SOL_SOCKET, SO_SNDBUF, [32768], 4) = 0
setsockopt(3, SOL_SOCKET, SO_RCVBUF, [32768], 4) = 0
bind(3, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 0
getsockname(3, {sa_family=AF_NETLINK, pid=22130, groups=00000000}, [12]) = 0
time(NULL) = 1205389578
sendto(3, "\24\0\0\0\22\0\1\3\v\311\330G\0\0\0\0\0\0\0\0", 20, 0, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 20
recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\354\0\0\0\20\0\2\0\v\311\330GrV\0\0\0\0\4\3\1\0\0\0I\0"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 724
recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\24\0\0\0\3\0\2\0\v\311\330GrV\0\0\0\0\0\0\1\0\0\0I\0\1"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 20
sendmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(2)=[{"$\0\0\0&\0\1\3\f\311\330G\0\0\0\0", 16}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 20}], msg_controllen=0, msg_flags=0}, 0) = 36
recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\260\0\0\0$\0\2\0\f\311\330GrV\0\0\0\0\0\0\2\0\0\0\0\0"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 508
fstat64(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 6), ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f57000
open("/usr/lib/tc/q_prio.so", O_RDONLY) = -1 ENOENT (No such file or directory)
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV (core dumped) +++
Process 22130 detachedroot@kontiki:~/bin# ls /usr/lib/tc
experimental.dist normal.dist pareto.dist paretonormal.dist q_atm.so