microsoft
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WSL2-Linux-Kernel
зеркало из https://github.com/microsoft/WSL2-Linux-Kernel.git
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WSL2-Linux-Kernel/net/sched
История
Eric Dumazet a1211bf9a7 sched: etf: do not assume all sockets are full blown 
skb->sk does not always point to a full blown socket,
we need to use sk_fullsock() before accessing fields which
only make sense on full socket.

BUG: KASAN: use-after-free in report_sock_error+0x286/0x300 net/sched/sch_etf.c:141
Read of size 1 at addr ffff88805eb9b245 by task syz-executor.5/9630

CPU: 1 PID: 9630 Comm: syz-executor.5 Not tainted 5.7.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x315 mm/kasan/report.c:382
 __kasan_report.cold+0x35/0x4d mm/kasan/report.c:511
 kasan_report+0x33/0x50 mm/kasan/common.c:625
 report_sock_error+0x286/0x300 net/sched/sch_etf.c:141
 etf_enqueue_timesortedlist+0x389/0x740 net/sched/sch_etf.c:170
 __dev_xmit_skb net/core/dev.c:3710 [inline]
 __dev_queue_xmit+0x154a/0x30a0 net/core/dev.c:4021
 neigh_hh_output include/net/neighbour.h:499 [inline]
 neigh_output include/net/neighbour.h:508 [inline]
 ip6_finish_output2+0xfb5/0x25b0 net/ipv6/ip6_output.c:117
 __ip6_finish_output+0x442/0xab0 net/ipv6/ip6_output.c:143
 ip6_finish_output+0x34/0x1f0 net/ipv6/ip6_output.c:153
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip6_output+0x239/0x810 net/ipv6/ip6_output.c:176
 dst_output include/net/dst.h:435 [inline]
 NF_HOOK include/linux/netfilter.h:307 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ip6_xmit+0xe1a/0x2090 net/ipv6/ip6_output.c:280
 tcp_v6_send_synack+0x4e7/0x960 net/ipv6/tcp_ipv6.c:521
 tcp_rtx_synack+0x10d/0x1a0 net/ipv4/tcp_output.c:3916
 inet_rtx_syn_ack net/ipv4/inet_connection_sock.c:669 [inline]
 reqsk_timer_handler+0x4c2/0xb40 net/ipv4/inet_connection_sock.c:763
 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1405
 expire_timers kernel/time/timer.c:1450 [inline]
 __run_timers kernel/time/timer.c:1774 [inline]
 __run_timers kernel/time/timer.c:1741 [inline]
 run_timer_softirq+0x623/0x1600 kernel/time/timer.c:1787
 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x192/0x1d0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:546 [inline]
 smp_apic_timer_interrupt+0x19e/0x600 arch/x86/kernel/apic/apic.c:1140
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:des_encrypt+0x157/0x9c0 lib/crypto/des.c:792
Code: 85 22 06 00 00 41 31 dc 41 8b 4d 04 44 89 e2 41 83 e4 3f 4a 8d 3c a5 60 72 72 88 81 e2 3f 3f 3f 3f 48 89 f8 48 c1 e8 03 31 d9 <0f> b6 34 28 48 89 f8 c1 c9 04 83 e0 07 83 c0 03 40 38 f0 7c 09 40
RSP: 0018:ffffc90003b5f6c0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff10e4e55 RBX: 00000000d2f846d0 RCX: 00000000d2f846d0
RDX: 0000000012380612 RSI: ffffffff839863ca RDI: ffffffff887272a8
RBP: dffffc0000000000 R08: ffff888091d0a380 R09: 0000000000800081
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000012
R13: ffff8880a8ae8078 R14: 00000000c545c93e R15: 0000000000000006
 cipher_crypt_one crypto/cipher.c:75 [inline]
 crypto_cipher_encrypt_one+0x124/0x210 crypto/cipher.c:82
 crypto_cbcmac_digest_update+0x1b5/0x250 crypto/ccm.c:830
 crypto_shash_update+0xc4/0x120 crypto/shash.c:119
 shash_ahash_update+0xa3/0x110 crypto/shash.c:246
 crypto_ahash_update include/crypto/hash.h:547 [inline]
 hash_sendmsg+0x518/0xad0 crypto/algif_hash.c:102
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 ____sys_sendmsg+0x308/0x7e0 net/socket.c:2362
 ___sys_sendmsg+0x100/0x170 net/socket.c:2416
 __sys_sendmmsg+0x195/0x480 net/socket.c:2506
 __do_sys_sendmmsg net/socket.c:2535 [inline]
 __se_sys_sendmmsg net/socket.c:2532 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2532
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45c829
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f6d9528ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00000000004fc080 RCX: 000000000045c829
RDX: 0000000000000001 RSI: 0000000020002640 RDI: 0000000000000004
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000008d7 R14: 00000000004cb7aa R15: 00007f6d9528f6d4

Fixes: 4b15c70753 ("net/sched: Make etf report drops on error_queue")
Fixes: 25db26a913 ("net/sched: Introduce the ETF Qdisc")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reviewed-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2020-04-22 19:20:28 -07:00
..
Kconfig net/sched: act_ct: Create nf flow table per zone 2020-03-03 15:09:12 -08:00
Makefile
…
act_api.c net: sched: expose HW stats types per action used by drivers 2020-03-30 11:06:49 -07:00
act_bpf.c bpf: Add socket assign support 2020-03-30 13:45:04 -07:00
act_connmark.c
…
act_csum.c
…
act_ct.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-03-25 18:58:11 -07:00
act_ctinfo.c
…
act_gact.c
…
act_ife.c
…
act_ipt.c
…
act_meta_mark.c
…
act_meta_skbprio.c
…
act_meta_skbtcindex.c
…
act_mirred.c net: Fix CONFIG_NET_CLS_ACT=n and CONFIG_NFT_FWD_NETDEV={y, m} build 2020-03-25 12:24:33 -07:00
act_mpls.c
…
act_nat.c
…
act_pedit.c sched: act_pedit: Implement stats_update callback 2020-03-26 19:20:37 -07:00
act_police.c
…
act_sample.c net: sched: lock action when translating it to flow_action infra 2020-02-17 14:17:02 -08:00
act_simple.c
…
act_skbedit.c sched: act_skbedit: Implement stats_update callback 2020-03-26 19:20:37 -07:00
act_skbmod.c
…
act_tunnel_key.c
…
act_vlan.c
…
cls_api.c net: sched: Fix setting last executed chain on skb extension 2020-04-07 18:32:08 -07:00
cls_basic.c
…
cls_bpf.c
…
cls_cgroup.c
…
cls_flow.c
…
cls_flower.c net: sched: expose HW stats types per action used by drivers 2020-03-30 11:06:49 -07:00
cls_fw.c
…
cls_matchall.c net: sched: expose HW stats types per action used by drivers 2020-03-30 11:06:49 -07:00
cls_route.c net_sched: cls_route: remove the right filter from hashtable 2020-03-16 01:59:32 -07:00
cls_rsvp.c
…
cls_rsvp.h
…
cls_rsvp6.c
…
cls_tcindex.c net_sched: fix a missing refcnt in tcindex_init() 2020-04-03 16:00:08 -07:00
cls_u32.c
…
em_canid.c
…
em_cmp.c
…
em_ipset.c
…
em_ipt.c net: sched: Replace zero-length array with flexible-array member 2020-02-29 21:27:02 -08:00
em_meta.c
…
em_nbyte.c net: sched: Replace zero-length array with flexible-array member 2020-02-29 21:27:02 -08:00
em_text.c
…
em_u32.c
…
ematch.c
…
sch_api.c net_sched: do not reprogram a timer about to expire 2020-03-17 21:16:35 -07:00
sch_atm.c net: sched: Replace zero-length array with flexible-array member 2020-02-29 21:27:02 -08:00
sch_blackhole.c
…
sch_cake.c
…
sch_cbq.c
…
sch_cbs.c net: cbs: Fix software cbs to consider packet sending time 2020-03-24 16:14:05 -07:00
sch_choke.c
…
sch_codel.c
…
sch_drr.c
…
sch_dsmark.c
…
sch_etf.c sched: etf: do not assume all sockets are full blown 2020-04-22 19:20:28 -07:00
sch_ets.c
…
sch_fifo.c net: sched: Make FIFO Qdisc offloadable 2020-03-05 14:03:31 -08:00
sch_fq.c net_sched: sch_fq: enable use of hrtimer slack 2020-03-17 21:16:35 -07:00
sch_fq_codel.c
…
sch_fq_pie.c pie: remove pie_vars->accu_prob_overflows 2020-03-04 13:25:55 -08:00
sch_generic.c Revert "net: sched: make newly activated qdiscs visible" 2020-03-12 11:19:24 -07:00
sch_gred.c
…
sch_hfsc.c
…
sch_hhf.c
…
sch_htb.c
…
sch_ingress.c net: sched: Pass ingress block to tcf_classify_ingress 2020-02-19 17:49:48 -08:00
sch_mq.c
…
sch_mqprio.c
…
sch_multiq.c
…
sch_netem.c net: sched: Replace zero-length array with flexible-array member 2020-02-29 21:27:02 -08:00
sch_pie.c net: sched: pie: change tc_pie_xstats->prob 2020-03-09 18:05:55 -07:00
sch_plug.c
…
sch_prio.c
…
sch_qfq.c
…
sch_red.c net: introduce nla_put_bitfield32() helper and use it 2020-03-30 11:06:49 -07:00
sch_sfb.c
…
sch_sfq.c
…
sch_skbprio.c
…
sch_taprio.c taprio: Fix sending packets without dequeueing them 2020-03-12 11:25:08 -07:00
sch_tbf.c
…
sch_teql.c
…