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linux/net/core
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Sebastian Andrzej Siewior e0ae713023 xdp: xdp_mem_allocator can be NULL in trace_mem_connect(). 
Since the commit mentioned below __xdp_reg_mem_model() can return a NULL
pointer. This pointer is dereferenced in trace_mem_connect() which leads
to segfault.

The trace points (mem_connect + mem_disconnect) were put in place to
pair connect/disconnect using the IDs. The ID is only assigned if
__xdp_reg_mem_model() does not return NULL. That connect trace point is
of no use if there is no ID.

Skip that connect trace point if xdp_alloc is NULL.

[ Toke Høiland-Jørgensen delivered the reasoning for skipping the trace
  point ]

Fixes: 4a48ef70b9 ("xdp: Allow registering memory model without rxq reference")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/YikmmXsffE+QajTB@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-10 16:09:29 -08:00
..
bpf_sk_storage.c bpf: Allow bpf_local_storage to be used by sleepable programs 2021-12-29 17:54:40 -08:00
datagram.c net: avoid double accounting for pure zerocopy skbs 2021-11-03 11:19:49 +00:00
datagram.h
dev_addr_lists_test.c net: kunit: add a test for dev_addr_lists 2021-11-20 12:25:57 +00:00
dev_addr_lists.c dev_addr_list: put the first addr on the tree 2021-11-20 12:25:57 +00:00
dev_ioctl.c net_tstamp: add new flag HWTSTAMP_FLAG_BONDED_PHC_INDEX 2021-12-14 12:28:24 +00:00
dev.c xdp: check prog type before updating BPF link 2022-01-11 09:44:06 -08:00
devlink.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2021-12-31 14:35:40 +00:00
drop_monitor.c drop_monitor: fix data-race in dropmon_net_event / trace_napi_poll_hit 2022-02-11 11:20:32 +00:00
dst_cache.c wireguard: device: reset peer src endpoint when netns exits 2021-11-29 19:50:45 -08:00
dst.c net: dst: add net device refcount tracking to dst_entry 2021-12-06 16:05:10 -08:00
failover.c net: failover: add net device refcount tracker 2021-12-06 16:06:02 -08:00
fib_notifier.c
fib_rules.c fib: expand fib_rule_policy 2021-12-16 07:18:35 -08:00
filter.c bpf: Do not try bpf_msg_push_data with len 0 2022-02-11 13:49:23 +01:00
flow_dissector.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2021-12-31 14:35:40 +00:00
flow_offload.c flow_offload: add reoffload process to update hw_count 2021-12-19 14:08:48 +00:00
gen_estimator.c net: sched: Remove Qdisc::running sequence counter 2021-10-18 12:54:41 +01:00
gen_stats.c net: stats: Read the statistics in ___gnet_stats_copy_basic() instead of adding. 2021-10-21 12:47:56 +01:00
gro_cells.c gro_cells: reduce number of synchronize_net() calls 2020-11-25 11:28:12 -08:00
gro.c net: Fix esp GSO on inter address family tunnels. 2022-03-07 13:14:04 +01:00
hwbm.c
link_watch.c net: linkwatch: be more careful about dev->linkwatch_dev_tracker 2021-12-14 18:45:58 -08:00
lwt_bpf.c net: Don't include filter.h from net/sock.h 2021-12-29 08:48:14 -08:00
lwtunnel.c lwtunnel: Validate RTA_ENCAP_TYPE attribute length 2021-12-31 14:31:59 +00:00
Makefile net: kunit: add a test for dev_addr_lists 2021-11-20 12:25:57 +00:00
neighbour.c net, neigh: Do not trigger immediate probes on NUD_FAILED from neigh_managed_work 2022-02-02 20:30:18 -08:00
net_namespace.c netns: add schedule point in ops_exit_list() 2022-01-18 13:40:58 +00:00
net-procfs.c net-procfs: show net devices bound packet types 2022-01-24 11:58:46 +00:00
net-sysfs.c net-sysfs: add check for netdevice being present to speed_show 2022-02-18 10:59:11 +00:00
net-sysfs.h
net-traces.c tcp: add tracepoint for checksum errors 2021-05-14 15:26:03 -07:00
netclassid_cgroup.c bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode 2021-09-13 16:35:58 -07:00
netevent.c net: core: Correct function name netevent_unregister_notifier() in the kerneldoc 2021-03-28 17:56:56 -07:00
netpoll.c netpoll: add net device refcount tracker to struct netpoll 2021-12-06 16:06:02 -08:00
netprio_cgroup.c bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode 2021-09-13 16:35:58 -07:00
of_net.c Revert "of: net: support NVMEM cells with MAC in text format" 2022-01-12 14:14:36 +00:00
page_pool.c page_pool: remove spinlock in page_pool_refill_alloc_cache() 2022-01-09 16:45:27 -08:00
pktgen.c proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
ptp_classifier.c bpf: Refactor BPF_PROG_RUN into a function 2021-08-17 00:45:07 +02:00
request_sock.c
rtnetlink.c net_sched: add __rcu annotation to netdev->qdisc 2022-02-14 13:36:36 +00:00
scm.c memcg: enable accounting for scm_fp_list objects 2021-07-20 06:00:38 -07:00
secure_seq.c net: align static siphash keys 2021-11-16 19:07:54 -08:00
selftests.c net: core: constify mac addrs in selftests 2021-10-24 13:59:44 +01:00
skbuff.c net: fix up skbs delta_truesize in UDP GRO frag_list 2022-03-02 22:04:10 -08:00
skmsg.c bpf, sockmap: Do not ignore orig_len parameter 2022-03-02 22:49:03 -08:00
sock_destructor.h skb_expand_head() adjust skb->truesize incorrectly 2021-10-22 12:35:51 -07:00
sock_diag.c net: Don't include filter.h from net/sock.h 2021-12-29 08:48:14 -08:00
sock_map.c bpf, sockmap: Fix double bpf_prog_put on error case in map_link 2022-01-05 20:43:08 +01:00
sock_reuseport.c tcp: Add stats for socket migration. 2021-06-23 12:56:08 -07:00
sock.c net-timestamp: convert sk->sk_tskey to atomic_t 2022-02-18 11:14:52 +00:00
stream.c net: stream: don't purge sk_error_queue in sk_stream_kill_queues() 2021-10-16 09:06:09 +01:00
sysctl_net_core.c net: Don't include filter.h from net/sock.h 2021-12-29 08:48:14 -08:00
timestamping.c
tso.c net: tso: add UDP segmentation support 2020-06-18 20:46:23 -07:00
utils.c
xdp.c xdp: xdp_mem_allocator can be NULL in trace_mem_connect(). 2022-03-10 16:09:29 -08:00