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9e2ad638ae3632ef916ceb39f70e3104bf8fdc97
linux/net/core
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Song Liu 9e2ad638ae bpf: Extend BTF_ID_LIST_GLOBAL with parameter for number of IDs 
syzbot reported the following BUG w/o CONFIG_DEBUG_INFO_BTF

BUG: KASAN: global-out-of-bounds in task_iter_init+0x212/0x2e7 kernel/bpf/task_iter.c:661
Read of size 4 at addr ffffffff90297404 by task swapper/0/1

CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.15.0-syzkaller #0
Hardware name: ... Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_address_description.constprop.0.cold+0xf/0x309 mm/kasan/report.c:256
__kasan_report mm/kasan/report.c:442 [inline]
kasan_report.cold+0x83/0xdf mm/kasan/report.c:459
task_iter_init+0x212/0x2e7 kernel/bpf/task_iter.c:661
do_one_initcall+0x103/0x650 init/main.c:1295
do_initcall_level init/main.c:1368 [inline]
do_initcalls init/main.c:1384 [inline]
do_basic_setup init/main.c:1403 [inline]
kernel_init_freeable+0x6b1/0x73a init/main.c:1606
kernel_init+0x1a/0x1d0 init/main.c:1497
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>

This is caused by hard-coded name[1] in BTF_ID_LIST_GLOBAL (w/o
CONFIG_DEBUG_INFO_BTF). Fix this by adding a parameter n to
BTF_ID_LIST_GLOBAL. This avoids ifdef CONFIG_DEBUG_INFO_BTF in btf.c and
filter.c.

Fixes: 7c7e3d31e7 ("bpf: Introduce helper bpf_find_vma")
Reported-by: syzbot+e0d81ec552a21d9071aa@syzkaller.appspotmail.com
Reported-by: Eric Dumazet <edumazet@google.com>
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20211112150243.1270987-2-songliubraving@fb.com
2021-11-12 10:19:09 -08:00
..
bpf_sk_storage.c
net: in_irq() cleanup
2021-08-13 14:09:19 -07:00
datagram.c
Revert "net: avoid double accounting for pure zerocopy skbs"
2021-11-01 22:26:08 -07:00
datagram.h
…
dev_addr_lists.c
net: dev_addr_list: handle first address in __hw_addr_add_ex
2021-09-30 13:29:09 +01:00
dev_ioctl.c
ethtool: push the rtnl_lock into dev_ethtool()
2021-11-01 13:26:07 +00:00
dev.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2021-10-28 10:43:58 -07:00
devlink.c
ethtool: don't drop the rtnl_lock half way thru the ioctl
2021-11-01 13:26:07 +00:00
drop_monitor.c
net: Remove redundant if statements
2021-08-05 13:27:50 +01:00
dst_cache.c
…
dst.c
net: Remove redundant if statements
2021-08-05 13:27:50 +01:00
failover.c
…
fib_notifier.c
net: fib_notifier: propagate extack down to the notifier block callback
2019-10-04 11:10:56 -07:00
fib_rules.c
memcg: enable accounting for IP address and routing-related objects
2021-07-20 06:00:38 -07:00
filter.c
bpf: Extend BTF_ID_LIST_GLOBAL with parameter for number of IDs
2021-11-12 10:19:09 -08:00
flow_dissector.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2021-11-01 20:05:14 -07:00
flow_offload.c
net: Fix offloading indirect devices dependency on qdisc order creation
2021-08-19 13:19:30 +01:00
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
hwbm.c
…
link_watch.c
net: linkwatch: fix failure to restore device state across suspend/resume
2021-08-11 14:43:16 -07:00
lwt_bpf.c
lwt_bpf: Replace preempt_disable() with migrate_disable()
2020-12-07 11:53:40 -08:00
lwtunnel.c
netfilter: add netfilter hooks to SRv6 data plane
2021-08-30 01:51:36 +02:00
Makefile
of: net: move of_net under net/
2021-10-07 13:39:51 +01:00
neighbour.c
net, neigh: Reject creating NUD_PERMANENT with NTF_MANAGED entries
2021-10-14 19:16:21 -07:00
net_namespace.c
net: net_namespace: Fix undefined member in key_remove_domain()
2021-09-19 12:43:04 +01:00
net-procfs.c
Revert "net: procfs: add seq_puts() statement for dev_mcast"
2021-10-13 17:24:38 -07:00
net-sysfs.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2021-10-28 10:43:58 -07:00
net-sysfs.h
net-sysfs: add netdev_change_owner()
2020-02-26 20:07:25 -08:00
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
Merge tag 'asm-generic-unaligned-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
2021-07-02 12:43:40 -07:00
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
of: net: add a helper for loading netdev->dev_addr
2021-10-07 13:39:51 +01:00
page_pool.c
page_pool: disable dma mapping support for 32-bit arch with 64-bit DMA
2021-10-15 10:54:20 +01:00
pktgen.c
pktgen: remove unused variable
2021-09-03 11:48:28 +01:00
ptp_classifier.c
bpf: Refactor BPF_PROG_RUN into a function
2021-08-17 00:45:07 +02:00
request_sock.c
tcp: add rcu protection around tp->fastopen_rsk
2019-10-13 10:13:08 -07:00
rtnetlink.c
net: rtnetlink: use __dev_addr_set()
2021-10-24 13:59:44 +01:00
scm.c
memcg: enable accounting for scm_fp_list objects
2021-07-20 06:00:38 -07:00
secure_seq.c
crypto: lib/sha1 - remove unnecessary includes of linux/cryptohash.h
2020-05-08 15:32:17 +10:00
selftests.c
net: core: constify mac addrs in selftests
2021-10-24 13:59:44 +01:00
skbuff.c
Revert "net: avoid double accounting for pure zerocopy skbs"
2021-11-01 22:26:08 -07:00
skmsg.c
Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2021-11-01 19:59:46 -07:00
sock_destructor.h
skb_expand_head() adjust skb->truesize incorrectly
2021-10-22 12:35:51 -07:00
sock_diag.c
bpf, net: Rework cookie generator as per-cpu one
2020-09-30 11:50:35 -07:00
sock_map.c
af_unix: Add unix_stream_proto for sockmap
2021-08-16 18:43:39 -07:00
sock_reuseport.c
tcp: Add stats for socket migration.
2021-06-23 12:56:08 -07:00
sock.c
vsock: Enable y2038 safe timeval for timeout
2021-10-08 16:21:53 +01:00
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
bpf: Prevent increasing bpf_jit_limit above max
2021-10-22 17:23:53 -07:00
timestamping.c
net: Introduce a new MII time stamping interface.
2019-12-25 19:51:33 -08:00
tso.c
net: tso: add UDP segmentation support
2020-06-18 20:46:23 -07:00
utils.c
net: Fix skb->csum update in inet_proto_csum_replace16().
2020-01-24 20:54:30 +01:00
xdp.c
xdp: Remove redundant warning
2021-10-27 18:13:57 -07:00