UBSAN: array-index-out-of-bounds in qfq_update

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[syzbot] UBSAN: array-index-out-of-bounds in qfq_update_agg (3)	0 (1)	2021/09/24 01:58

Title

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[syzbot] UBSAN: array-index-out-of-bounds in qfq_update_agg (3)

0 (1)

2021/09/24 01:58

Kernel	Title	Count	Last	Reported	Patched	Status
upstream	UBSAN: array-index-out-of-bounds in qfq_update_agg (2) net	1	1063d	1063d	0/26	auto-closed as invalid on 2021/08/25 08:31
upstream	UBSAN: array-index-out-of-bounds in qfq_update_agg (4) net	1	372d	372d	22/26	fixed on 2023/06/08 14:41
upstream	UBSAN: array-index-out-of-bounds in qfq_update_agg net	2	1193d	1204d	0/26	auto-closed as invalid on 2021/05/16 21:20

netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. ================================================================================ UBSAN: array-index-out-of-bounds in net/sched/sch_qfq.c:300:24 index 29 is out of range for type 'qfq_group [25]' CPU: 1 PID: 28839 Comm: syz-executor.5 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/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 ubsan_epilogue+0xb/0x5a lib/ubsan.c:151 __ubsan_handle_out_of_bounds.cold+0x62/0x6c lib/ubsan.c:291 qfq_update_agg+0x6e6/0x700 net/sched/sch_qfq.c:300 qfq_add_to_agg+0x75/0x500 net/sched/sch_qfq.c:317 qfq_change_class+0x67e/0x1600 net/sched/sch_qfq.c:508 tc_ctl_tclass+0x52f/0xe60 net/sched/sch_api.c:2104 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5571 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3861750ae9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f385ecc6188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f3861863f60 RCX: 00007f3861750ae9 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 00007f38617aaf25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc0cd7c8ff R14: 00007f385ecc6300 R15: 0000000000022000 </TASK> ================================================================================

Crashes (6):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Manager	Title
2021/11/03 19:37	net-old	db2434343b2c	4c1be0be	.config	console log	report	info	ci-upstream-net-this-kasan-gce	UBSAN: array-index-out-of-bounds in qfq_update_agg
2021/10/21 11:56	net-old	4225fea1cb28	f111d03b	.config	console log	report	info	ci-upstream-net-this-kasan-gce	UBSAN: array-index-out-of-bounds in qfq_update_agg
2021/09/22 15:28	net-old	b3f98404bd62	169724fe	.config	console log	report	info	ci-upstream-net-this-kasan-gce	UBSAN: array-index-out-of-bounds in qfq_update_agg
2022/01/13 16:19	net-next-old	fe8152b38d3a	44d1319a	.config	console log	report	info	ci-upstream-net-kasan-gce	UBSAN: array-index-out-of-bounds in qfq_update_agg
2021/11/09 17:44	net-next-old	cc0356d6a02e	59bcaf9a	.config	console log	report	info	ci-upstream-net-kasan-gce	UBSAN: array-index-out-of-bounds in qfq_update_agg
2021/10/12 01:02	net-next-old	ce8bd03c47fc	838e7e2c	.config	console log	report	info	ci-upstream-net-kasan-gce	UBSAN: array-index-out-of-bounds in qfq_update_agg

Crashes (6):

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