netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'. ================================================================================ UBSAN: Undefined behaviour in net/sched/cls_tcindex.c:238:29 shift exponent 32767 is too large for 32-bit type 'int' CPU: 1 PID: 12358 Comm: syz-executor.2 Not tainted 4.19.148-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x22c/0x33e lib/dump_stack.c:118 ubsan_epilogue+0xe/0x3a lib/ubsan.c:161 __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422 valid_perfect_hash net/sched/cls_tcindex.c:238 [inline] tcindex_set_parms.cold+0x170/0x22f net/sched/cls_tcindex.c:398 tcindex_change+0x220/0x2f3 net/sched/cls_tcindex.c:518 tc_new_tfilter+0xb38/0x1570 net/sched/cls_api.c:1320 rtnetlink_rcv_msg+0x498/0xc10 net/core/rtnetlink.c:4778 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x717/0xcc0 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc7/0x130 net/socket.c:632 ___sys_sendmsg+0x3b3/0x8f0 net/socket.c:2115 __sys_sendmmsg+0x195/0x470 net/socket.c:2210 __do_sys_sendmmsg net/socket.c:2239 [inline] __se_sys_sendmmsg net/socket.c:2236 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2236 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45e179 Code: 3d b2 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 0b b2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1a5f69ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 0000000000027f40 RCX: 000000000045e179 RDX: 04924924924926d3 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffc8b362ebf R14: 00007f1a5f69b9c0 R15: 000000000118cf4c ================================================================================ nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'. omfs: Invalid superblock (51a0e0) SQUASHFS error: zlib decompression failed, data probably corrupt omfs: Invalid superblock (51a0e0) SQUASHFS error: squashfs_read_data failed to read block 0x115 SQUASHFS error: Unable to read metadata cache entry [115] SQUASHFS error: Unable to read directory block [115:26] omfs: Invalid superblock (0) omfs: Invalid superblock (0) omfs: Invalid superblock (0) omfs: Invalid superblock (0) omfs: Invalid superblock (997150f0) SQUASHFS error: zlib decompression failed, data probably corrupt SQUASHFS error: squashfs_read_data failed to read block 0x115 SQUASHFS error: Unable to read metadata cache entry [115] SQUASHFS error: Unable to read metadata cache entry [115] SQUASHFS error: Unable to read directory block [115:26] SQUASHFS error: Unable to read directory block [115:26] omfs: Invalid superblock (0) SQUASHFS error: zlib decompression failed, data probably corrupt SQUASHFS error: squashfs_read_data failed to read block 0x81 SQUASHFS error: Unable to read metadata cache entry [81] SQUASHFS error: Unable to read inode 0x11a IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 SQUASHFS error: zlib decompression failed, data probably corrupt SQUASHFS error: squashfs_read_data failed to read block 0x115 SQUASHFS error: Unable to read metadata cache entry [115] SQUASHFS error: Unable to read directory block [115:26] SQUASHFS error: Unable to read metadata cache entry [115] SQUASHFS error: Unable to read directory block [115:26] SQUASHFS error: zlib decompression failed, data probably corrupt SQUASHFS error: zlib decompression failed, data probably corrupt SQUASHFS error: squashfs_read_data failed to read block 0x115 SQUASHFS error: squashfs_read_data failed to read block 0x115 SQUASHFS error: Unable to read metadata cache entry [115] SQUASHFS error: Unable to read metadata cache entry [115] SQUASHFS error: Unable to read metadata cache entry [115] SQUASHFS error: Unable to read directory block [115:26] SQUASHFS error: Unable to read directory block [115:26] SQUASHFS error: Unable to read directory block [115:26] omfs: Invalid superblock (0) SQUASHFS error: zlib decompression failed, data probably corrupt SQUASHFS error: squashfs_read_data failed to read block 0x115 SQUASHFS error: Unable to read metadata cache entry [115] SQUASHFS error: Unable to read metadata cache entry [115] SQUASHFS error: Unable to read directory block [115:26] SQUASHFS error: Unable to read directory block [115:26] omfs: Invalid superblock (0) IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 omfs: Invalid superblock (0)