Messages in this thread | | | Date | Thu, 23 Sep 2021 18:58:25 -0700 | Subject | [syzbot] UBSAN: array-index-out-of-bounds in qfq_update_agg (3) | From | syzbot <> |
| |
Hello,
syzbot found the following issue on:
HEAD commit: b3f98404bd62 Merge branch 'dsa-devres' git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=17838dab300000 kernel config: https://syzkaller.appspot.com/x/.config?x=6d93fe4341f98704 dashboard link: https://syzkaller.appspot.com/bug?extid=ed284664846fc47b6300 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ed284664846fc47b6300@syzkaller.appspotmail.com
netlink: 52 bytes leftover after parsing attributes in process `syz-executor.1'. ================================================================================ 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: 2911 Comm: syz-executor.1 Not tainted 5.15.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __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+0x6f0/0x17a0 net/sched/sch_qfq.c:507 tc_ctl_tclass+0x52f/0xe60 net/sched/sch_api.c:2107 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5572 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 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+0xf3/0x1c0 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: 0033:0x7fc9a0bdb739 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:00007fc99e110188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc9a0ce00f0 RCX: 00007fc9a0bdb739 RDX: 0000000000000000 RSI: 0000000020000380 RDI: 0000000000000004 RBP: 00007fc9a0c35cc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc9a0ce00f0 R13: 00007ffed233187f R14: 00007fc99e110300 R15: 0000000000022000 ================================================================================
--- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
| |