Kuniyuki Iwashima 0c2651c763 dccp/tcp: Avoid negative sk_forward_alloc by ipv6_pinfo.pktoptions. ... commit ca43ccf412 upstream. Eric Dumazet pointed out [0] that when we call skb_set_owner_r() for ipv6_pinfo.pktoptions, sk_rmem_schedule() has not been called, resulting in a negative sk_forward_alloc. We add a new helper which clones a skb and sets its owner only when sk_rmem_schedule() succeeds. Note that we move skb_set_owner_r() forward in (dccp|tcp)_v6_do_rcv() because tcp_send_synack() can make sk_forward_alloc negative before ipv6_opt_accepted() in the crossed SYN-ACK or self-connect() cases. [0]: https://lore.kernel.org/netdev/CANn89iK9oc20Jdi_41jb9URdF210r7d1Y-+uypbMSbOfY6jqrg@mail.gmail.com/ Fixes: 323fbd0edf ("net: dccp: Add handling of IPV6_PKTOPTIONS to dccp_v6_do_rcv()") Fixes: 3df80d9320 ("[DCCP]: Introduce DCCPv6") Fixes: 1da177e4c3 ("Linux-2.6.12-rc2") Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-02-22 12:50:40 +01:00
..
acpi	ACPI: CPPC: Do not prevent CPPC from working in the future	2022-08-25 11:18:15 +02:00
asm-generic	mm/khugepaged: fix GUP-fast interaction by sending IPI	2022-12-14 11:30:42 +01:00
clocksource
crypto	crypto: drbg - make reseeding from get_random_bytes() synchronous	2022-06-22 14:11:18 +02:00
drm
dt-bindings
keys
kvm
linux	hugetlb: check for undefined shift on 32 bit architectures	2023-02-22 12:50:39 +01:00
math-emu
media	media: dvbdev: fix build warning due to comments	2023-01-18 11:41:42 +01:00
misc
net	dccp/tcp: Avoid negative sk_forward_alloc by ipv6_pinfo.pktoptions.	2023-02-22 12:50:40 +01:00
pcmcia
ras
rdma
scsi	scsi: stex: Properly zero out the passthrough command structure	2022-10-15 07:54:39 +02:00
soc
sound	ALSA: hda: add snd_hdac_stop_streams() helper	2023-01-18 11:41:39 +01:00
target
trace	jbd2: use the correct print format	2023-01-18 11:42:02 +01:00
uapi	netfilter: conntrack: unify established states for SCTP paths	2023-02-06 07:52:47 +01:00
vdso
video	video: of_display_timing.h: include errno.h	2022-07-12 16:30:47 +02:00
xen