On Wed, 14 Aug 2024 18:09:59 +0800 Yonglong Liu wrote:

On 2024/8/10 11:57, Jakub Kicinski wrote:

quoted

On Fri, 9 Aug 2024 14:06:02 +0800 Yonglong Liu wrote:  

quoted

[ 7724.272853] hns3 0000:7d:01.0: page_pool_release_retry(): eno1v0
stalled pool shutdown: id 553, 82 inflight 6706 sec (hold netdev: 1855491)  

Alright :( You gotta look around for those 82 pages somehow with drgn.
bpftrace+kfunc the work that does the periodic print to get the address
of the page pool struct and then look around for pages from that pp.. :(  

I spent some time to learn how to use the drgn, and found those page, 
but I think those page

is allocated by the hns3 driver, how to find out who own those page now?

Scan the entire system memory looking for the pointer to this page.
Dump the memory around location which hold that pointer. If you're
lucky the page will be held by an skb, and the memory around it will
look like struct skb_shared_info. If you're less lucky the page is used
by sk_buff for the head and address will not be exact. If you're less
lucky still the page will be directly leaked by the driver, and not
pointed to by anything...

I think the last case is most likely, FWIW.