original_kernel/net/tls
Mina Almasry 173e7622cc Revert "net: mirror skb frag ref/unref helpers"
This reverts commit a580ea994f.

This revert is to resolve Dragos's report of page_pool leak here:
https://lore.kernel.org/lkml/20240424165646.1625690-2-dtatulea@nvidia.com/

The reverted patch interacts very badly with commit 2cc3aeb5ec ("skbuff:
Fix a potential race while recycling page_pool packets"). The reverted
commit hopes that the pp_recycle + is_pp_page variables do not change
between the skb_frag_ref and skb_frag_unref operation. If such a change
occurs, the skb_frag_ref/unref will not operate on the same reference type.
In the case of Dragos's report, the grabbed ref was a pp ref, but the unref
was a page ref, because the pp_recycle setting on the skb was changed.

Attempting to fix this issue on the fly is risky. Lets revert and I hope
to reland this with better understanding and testing to ensure we don't
regress some edge case while streamlining skb reffing.

Fixes: a580ea994f ("net: mirror skb frag ref/unref helpers")
Reported-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Mina Almasry <almasrymina@google.com>
Link: https://lore.kernel.org/r/20240502175423.2456544-1-almasrymina@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-03 16:05:53 -07:00
..
Kconfig net: skbuff: generalize the skb->decrypted bit 2024-04-06 17:34:31 +01:00
Makefile
tls.h tls: fix lockless read of strp->msg_ready in ->poll 2024-04-25 08:32:37 -07:00
tls_device.c net: move skb ref helpers to new header 2024-04-11 19:29:22 -07:00
tls_device_fallback.c Revert "net: mirror skb frag ref/unref helpers" 2024-05-03 16:05:53 -07:00
tls_main.c
tls_proc.c
tls_strp.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-04-25 12:41:37 -07:00
tls_sw.c tls: remove redundant assignment to variable decrypted 2024-04-11 20:00:22 -07:00
tls_toe.c
trace.c
trace.h