On Tue, Aug 06, 2019 at 03:46:33PM +0800, chenzefeng wrote:
The function free_module in file kernel/module.c as follow:
void free_module(struct module *mod) { ...... module_arch_cleanup(mod); ...... module_arch_freeing_init(mod); ...... }
Both module_arch_cleanup and module_arch_freeing_init function would free the mod->arch.init_unw_table, which cause double free.
Here, set mod->arch.init_unw_table = NULL after remove the unwind table to avoid double free.
Signed-off-by: chenzefeng chenzefeng2@huawei.com
arch/ia64/kernel/module.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
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This is not the correct way to submit patches for inclusion in the stable kernel tree. Please read: https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html for how to do this properly.
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