Comment 54 for bug 1157643

In my cast, it's the same with Tudor Holton (tudor) , the error is :
kernel.printk = 4 4 1 7
net.ipv6.conf.all.use_tempaddr = 2
net.ipv6.conf.default.use_tempaddr = 2
kernel.kptr_restrict = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.all.rp_filter = 1
net.ipv4.tcp_syncookies = 1
kernel.yama.ptrace_scope = 1
vm.mmap_min_addr = 65536
net.core.wmem_max = 1048576
net.core.rmem_max = 1048576
net.core.wmem_default = 1048576
net.core.rmem_default = 1048576
error: "Invalid argument" setting key "net.ipv4.tcp_mem"
net.ipv4.tcp_rmem = 1048576
net.ipv4.tcp_wmem = 1048576

I found 'net.ipv4.tcp_mem=1048576' in /etc/sysctl.d/30-iscsitarget.conf. As i never changed this 30-iscsitarget.conf file, So it should be a bug from iscsitarget package which i just install recently.