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[Bug runtime/9927] 2.6.29-rc7 - kernel crash with sharedbuf.exp stap test script
- From: "mhiramat at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 12 Mar 2009 15:58:49 -0000
- Subject: [Bug runtime/9927] 2.6.29-rc7 - kernel crash with sharedbuf.exp stap test script
- References: <20090306081910.9927.mahesh@linux.vnet.ibm.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From mhiramat at redhat dot com 2009-03-12 15:58 -------
$ eu-addr2line -e vmlinux 0xc045b3cb
/home/mhiramat/ksrc/linux-2.6/kernel/module.c:2298
2292 free_core:
2293 module_free(mod, mod->module_core);
2294 free_percpu:
2295 if (percpu)
2296 percpu_modfree(percpu);
2297 #if defined(CONFIG_MODULE_UNLOAD) && defined(CONFIG_SMP)
2298 percpu_modfree(mod->refptr);
2299 #endif
2300 free_mod:
2301 kfree(args);
it seems mod->refptr is invalid.
Perhaps, below commit caused this issue.
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=720eba31f47aeade8ec130ca7f4353223c49170f
--
http://sourceware.org/bugzilla/show_bug.cgi?id=9927
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