===================================================== 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: 0 PID: 16709 Comm: syz-executor.0 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 __compat_sys_sendmsg net/compat.c:642 [inline] __do_compat_sys_sendmsg net/compat.c:649 [inline] __se_compat_sys_sendmsg net/compat.c:646 [inline] __ia32_compat_sys_sendmsg+0xed/0x130 net/compat.c:646 do_syscall_32_irqs_on arch/x86/entry/common.c:339 [inline] do_fast_syscall_32+0x3c7/0x6e0 arch/x86/entry/common.c:410 entry_SYSENTER_compat+0x68/0x77 arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7fdbd99 Code: 90 e8 0b 00 00 00 f3 90 0f ae e8 eb f9 8d 74 26 00 89 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f5dd60cc EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020003e00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 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 =====================================================