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Eric Dumazet bcd0cf19ef net_sched: avoid shift-out-of-bounds in tcindex_set_parms() 
tc_index being 16bit wide, we need to check that TCA_TCINDEX_SHIFT
attribute is not silly.

UBSAN: shift-out-of-bounds in net/sched/cls_tcindex.c:260:29
shift exponent 255 is too large for 32-bit type 'int'
CPU: 0 PID: 8516 Comm: syz-executor228 Not tainted 5.10.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:120
 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148
 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:395
 valid_perfect_hash net/sched/cls_tcindex.c:260 [inline]
 tcindex_set_parms.cold+0x1b/0x215 net/sched/cls_tcindex.c:425
 tcindex_change+0x232/0x340 net/sched/cls_tcindex.c:546
 tc_new_tfilter+0x13fb/0x21b0 net/sched/cls_api.c:2127
 rtnetlink_rcv_msg+0x8b6/0xb80 net/core/rtnetlink.c:5555
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494
 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
 netlink_sendmsg+0x907/0xe40 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2336
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2390
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2423
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Link: https://lore.kernel.org/r/20210114185229.1742255-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-15 18:11:10 -08:00
..
act_api.c
net/sched: sch_frag: add generic packet fragment support.
2020-11-27 14:36:02 -08:00
act_bpf.c
net: sched: fix misspellings using misspell-fixer tool
2020-11-10 17:00:28 -08:00
act_connmark.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-09-24 19:46:21 -07:00
act_csum.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-09-24 19:46:21 -07:00
act_ct.c
net/sched: act_ct: enable stats for HW offloaded entries
2020-11-28 11:43:40 -08:00
act_ctinfo.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-10-05 18:40:01 -07:00
act_gact.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-09-24 19:46:21 -07:00
act_gate.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-10-05 18:40:01 -07:00
act_ife.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-09-24 19:46:21 -07:00
act_ipt.c
treewide: rename nla_strlcpy to nla_strscpy.
2020-11-16 08:08:54 -08:00
act_meta_mark.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
act_meta_skbprio.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
act_meta_skbtcindex.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
act_mirred.c
net/sched: sch_frag: add generic packet fragment support.
2020-11-27 14:36:02 -08:00
act_mpls.c
net/sched: act_mpls: ensure LSE is pullable before reading it
2020-12-03 11:13:37 -08:00
act_nat.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-09-24 19:46:21 -07:00
act_pedit.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-09-24 19:46:21 -07:00
act_police.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-09-24 19:46:21 -07:00
act_sample.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-09-24 19:46:21 -07:00
act_simple.c
treewide: rename nla_strlcpy to nla_strscpy.
2020-11-16 08:08:54 -08:00
act_skbedit.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-09-24 19:46:21 -07:00
act_skbmod.c
net_sched: defer tcf_idr_insert() in tcf_action_init_1()
2020-09-24 19:46:21 -07:00
act_tunnel_key.c
net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN tunnels
2020-10-20 21:10:41 -07:00
act_vlan.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-10-05 18:40:01 -07:00
cls_api.c
net: sched: remove redundant 'rtnl_held' argument
2020-12-01 11:24:56 -08:00
cls_basic.c
net_sched: fix ops->bind_class() implementations
2020-01-27 10:51:43 +01:00
cls_bpf.c
net_sched: fix ops->bind_class() implementations
2020-01-27 10:51:43 +01:00
cls_cgroup.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cls_flow.c
Remove uninitialized_var() macro for v5.9-rc1
2020-08-04 13:49:43 -07:00
cls_flower.c
cls_flower: call nla_ok() before nla_next()
2021-01-15 15:48:53 -08:00
cls_fw.c
net_sched: fix ops->bind_class() implementations
2020-01-27 10:51:43 +01:00
cls_matchall.c
net: qos offload add flow status with dropped count
2020-06-19 12:53:30 -07:00
cls_route.c
net_sched: cls_route: remove the right filter from hashtable
2020-03-16 01:59:32 -07:00
cls_rsvp6.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cls_rsvp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cls_rsvp.h
net: sched: fix misspellings using misspell-fixer tool
2020-11-10 17:00:28 -08:00
cls_tcindex.c
net_sched: avoid shift-out-of-bounds in tcindex_set_parms()
2021-01-15 18:11:10 -08:00
cls_u32.c
net/sched: cls_u32: simplify the return expression of u32_reoffload_knode()
2020-12-08 16:22:53 -08:00
em_canid.c
net: sched: kerneldoc fixes
2020-07-13 17:20:40 -07:00
em_cmp.c
net: sched: fix misspellings using misspell-fixer tool
2020-11-10 17:00:28 -08:00
em_ipset.c
sched: consistently handle layer3 header accesses in the presence of VLANs
2020-07-03 14:34:53 -07:00
em_ipt.c
sched: consistently handle layer3 header accesses in the presence of VLANs
2020-07-03 14:34:53 -07:00
em_meta.c
sched: consistently handle layer3 header accesses in the presence of VLANs
2020-07-03 14:34:53 -07:00
em_nbyte.c
net: sched: Replace zero-length array with flexible-array member
2020-02-29 21:27:02 -08:00
em_text.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
em_u32.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ematch.c
net: sched: kerneldoc fixes
2020-07-13 17:20:40 -07:00
Kconfig
net: sched: incorrect Kconfig dependencies on Netfilter modules
2020-12-09 15:49:29 -08:00
Makefile
net/sched: sch_frag: add generic packet fragment support.
2020-11-27 14:36:02 -08:00
sch_api.c
net_sched: reject silly cell_log in qdisc_get_rtab()
2021-01-15 18:06:45 -08:00
sch_atm.c
net: sched: convert tasklets to use new tasklet_setup() API
2020-11-07 10:41:15 -08:00
sch_blackhole.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_cake.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
sch_cbq.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2020-08-05 20:13:21 -07:00
sch_cbs.c
net: don't include ethtool.h from netdevice.h
2020-11-23 17:27:04 -08:00
sch_choke.c
net: sched: prevent invalid Scell_log shift count
2020-12-28 14:52:54 -08:00
sch_codel.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_drr.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_dsmark.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_etf.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_ets.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_fifo.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_fq_codel.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2020-08-05 20:13:21 -07:00
sch_fq_pie.c
net/sched: fq_pie: initialize timer earlier in fq_pie_init()
2020-12-04 14:15:01 -08:00
sch_fq.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_frag.c
net/sched: sch_frag: add generic packet fragment support.
2020-11-27 14:36:02 -08:00
sch_generic.c
net/sched: get rid of qdisc->padded
2020-10-09 08:08:08 -07:00
sch_gred.c
net: sched: prevent invalid Scell_log shift count
2020-12-28 14:52:54 -08:00
sch_hfsc.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2020-08-05 20:13:21 -07:00
sch_hhf.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_htb.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2020-08-05 20:13:21 -07:00
sch_ingress.c
net: sched: Pass ingress block to tcf_classify_ingress
2020-02-19 17:49:48 -08:00
sch_mq.c
net: sched: fix dump qlen for sch_mq/sch_mqprio with NOLOCK subqueues
2019-12-03 11:53:55 -08:00
sch_mqprio.c
mqprio: Fix out-of-bounds access in mqprio_dump
2019-12-06 11:58:45 -08:00
sch_multiq.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_netem.c
netem: fix zero division in tabledist
2020-10-29 11:45:47 -07:00
sch_pie.c
net: sched: fix misspellings using misspell-fixer tool
2020-11-10 17:00:28 -08:00
sch_plug.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_prio.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_qfq.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_red.c
net: sched: prevent invalid Scell_log shift count
2020-12-28 14:52:54 -08:00
sch_sfb.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_sfq.c
net: sched: prevent invalid Scell_log shift count
2020-12-28 14:52:54 -08:00
sch_skbprio.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_taprio.c
net/sched: sch_taprio: ensure to reset/destroy all child qdiscs
2020-12-18 16:43:29 -08:00
sch_tbf.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00
sch_teql.c
Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"
2020-07-16 16:48:34 -07:00