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bcd0cf19ef
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:
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Linux kernel
============
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