===================================================== BUG: KMSAN: uninit-value in list_splice include/linux/list.h:437 [inline] BUG: KMSAN: uninit-value in nf_flow_table_block_setup net/netfilter/nf_flow_table_offload.c:826 [inline] BUG: KMSAN: uninit-value in nf_flow_table_offload_setup+0x964/0xac0 net/netfilter/nf_flow_table_offload.c:883 CPU: 1 PID: 29861 Comm: syz-executor.3 Not tainted 5.6.0-rc2-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+0x1c9/0x220 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215 list_splice include/linux/list.h:437 [inline] nf_flow_table_block_setup net/netfilter/nf_flow_table_offload.c:826 [inline] nf_flow_table_offload_setup+0x964/0xac0 net/netfilter/nf_flow_table_offload.c:883 nft_register_flowtable_net_hooks net/netfilter/nf_tables_api.c:6185 [inline] nf_tables_newflowtable+0x233c/0x3e30 net/netfilter/nf_tables_api.c:6302 nfnetlink_rcv_batch net/netfilter/nfnetlink.c:433 [inline] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:543 [inline] nfnetlink_rcv+0x155e/0x3ab0 net/netfilter/nfnetlink.c:561 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0xf9e/0x1100 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x1246/0x14d0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] ____sys_sendmsg+0x12b6/0x1350 net/socket.c:2343 ___sys_sendmsg net/socket.c:2397 [inline] __sys_sendmsg+0x451/0x5f0 net/socket.c:2430 __do_sys_sendmsg net/socket.c:2439 [inline] __se_sys_sendmsg+0x97/0xb0 net/socket.c:2437 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2437 do_syscall_64+0xb8/0x160 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45c679 Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fc32d42ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc32d42b6d4 RCX: 000000000045c679 RDX: 0000000000000000 RSI: 0000000020003e00 RDI: 0000000000000006 RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000958 R14: 00000000004cbee4 R15: 000000000076bf0c Local variable ----bo@nf_flow_table_offload_setup created at: nf_flow_table_offload_setup+0xba/0xac0 net/netfilter/nf_flow_table_offload.c:876 nf_flow_table_offload_setup+0xba/0xac0 net/netfilter/nf_flow_table_offload.c:876 =====================================================