Messages in this thread | | | Date | Tue, 24 Feb 2015 10:43:40 +0000 | From | Russell King - ARM Linux <> | Subject | Re: [PATCH 0/7] Serialise oopses, BUGs, WARNs, dump_stack, soft lockups and hard lockups |
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On Tue, Feb 24, 2015 at 01:39:46AM -0800, Arjan van de Ven wrote: > one of the question is if you want to serialize, or if you just want > to label. If you take a cookie (could just be a monotonic increasing > number) at the start of the oops and then prefix/postfix the stack > printing with that number, you don't serialize (risk of locking up), > but you can pretty trivially see which line came from where.. > if you do the monotonic increasing number approach, you even get an > ordering out of it. it does mean changing the dump_stack() and co > function fingerprint to take an extra argument, but that is not TOO > insane.
I like that idea, but it relies on ensuring that each line is printed by one printk() statement - which in itself is a good idea.
I'd actually like a version of print_hex_dump() which we could use for stack and code dumping - the existing print_hex_dump() assumes that it's fine to dereference the pointer, whereas for stack and code dumping, we can't always make that assumption. That's a separate issue though.
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