Re: [PATCH 2/8] esp: do not unref managed frag pages in esp_ssg_unref()

Hi Steffen,

Thanks, the review was correct on all three points. I've sent a v2
that addresses them:

- It now calls skb_zcopy_downgrade_managed() before ESP mutates the
frag array (in esp_output_head/esp6_output_head), instead of the early
return in esp_ssg_unref(). As the review noted, that early return also
suppressed release of the ESP-owned trailer and destination page
references; downgrading fixes both the underflow and that leak, the
same way __ip_append_data() does.
- Corrected the Fixes: tag to 753f1ca4e1e5 (managed frags
infrastructure), not the 2017 skb_cow_data commits.

One open question: for the stable floor I used 753f1ca4e1e5. Would you
prefer the commit that first made managed-frag skbs reachable from
esp_output(), or an explicit v6.1+ range?

Please take a look.

Thanks,
Maher