f2fs not sure if this is a issue(checkpoint request fulfillment)
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f2fs not sure if this is a issue(checkpoint request fulfillment)
Hi dear all,
1. in f2fs_issue_checkpoint , this function will allocate a ckpt_req on the stack, and add it to issue_list then wait for ckpt_req to complete.
2. on the other hand , __checkpoint_and_complete_reqs will process the issue_list , iterate the issue_list and call complete for every entry.
3. because ckpt_req is allocated on stack, after complete is called , the ckpt_req might be freed , the next iteration might access freed memory.
Hi dear all,
1. in f2fs_issue_checkpoint , this function will allocate a ckpt_req on the stack, and add it to issue_list then wait for ckpt_req to complete.
2. on the other hand , __checkpoint_and_complete_reqs will process the issue_list , iterate the issue_list and call complete for every entry.
3. because ckpt_req is allocated on stack, after complete is called , the ckpt_req might be freed , the next iteration might access freed memory.
What version of F2FS in what kernel?
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f2fs not sure if this is a issue(checkpoint request fulfillment)
