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Description of problem: Can not modprobe dccp. Version-Release number of selected component (if applicable): rhel 6.1 rhel 5.7 How reproducible: always Steps to Reproduce: 1.modprobe -r dccp 2.modprobe dccp Actual results: [root@dhcp-65-10 dccp-cs-0.01]# modprobe dccp FATAL: Error inserting dccp (/lib/modules/2.6.32-128.el6.i686/kernel/net/dccp/dccp.ko): No buffer space available Expected results: modprobe dccp works Additional info: [root@dhcp-65-10 dccp-cs-0.01]# dmesg kmem_cache_create: duplicate cache cci Pid: 19164, comm: modprobe Not tainted 2.6.32-128.el6.i686 #1 Call Trace: [<c051b77e>] ? kmem_cache_create+0x4ae/0x500 [<f7f600d5>] ? dccp_init+0x0/0x30c [dccp] [<f7eaa10e>] ? ccid_kmem_cache_create+0x3e/0x50 [dccp] [<f7f60067>] ? ccid_initialize_builtins+0x67/0xd5 [dccp] [<f7f602f9>] ? dccp_init+0x224/0x30c [dccp] [<c040303f>] ? do_one_initcall+0x2f/0x1c0 [<c048f7e4>] ? sys_init_module+0xb4/0x220 [<c08264da>] ? do_page_fault+0x2a/0x90 [<c0409adf>] ? sysenter_do_call+0x12/0x28
Upstream patch: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=8ed030dd0aa400d18c63861c2c6deb7c38f4edde
Since RHEL 6.1 External Beta has begun, and this bug remains unresolved, it has been rejected as it is not proposed as exception or blocker. Red Hat invites you to ask your support representative to propose this request, if appropriate and relevant, in the next release of Red Hat Enterprise Linux.
I believe this bug blocks https://bugzilla.redhat.com/show_bug.cgi?id=682958 so my suggestion is to set it rhel‑6.1.0+
There is a regression with the upstream patch in comment 1, kernel panic appears when remove dccp_probe module, please see bug 702183 for detail.
I'm going to roll this fix in with bz 702183. I realize they're not really dups, but the fixes really go hand and hand *** This bug has been marked as a duplicate of bug 702183 ***