BUG: using smp_processor_id() in preemptible [00000000] code: syz.1.869/9584
caller is cpu_mt+0x53/0xd0 net/netfilter/xt_cpu.c:37
CPU: 0 UID: 0 PID: 9584 Comm: syz.1.869 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xd3/0xe0 lib/smp_processor_id.c:47
 cpu_mt+0x53/0xd0 net/netfilter/xt_cpu.c:37
 __nft_match_eval net/netfilter/nft_compat.c:412 [inline]
 nft_match_eval+0x1ad/0x2b0 net/netfilter/nft_compat.c:442
 expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
 nft_do_chain+0x48d/0x1ad0 net/netfilter/nf_tables_core.c:285
 nft_do_chain_inet+0x360/0x4b0 net/netfilter/nft_chain_filter.c:162
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
 nf_hook+0x22a/0x3a0 include/linux/netfilter.h:273
 __ip_local_out+0x558/0x6a0 net/ipv4/ip_output.c:120
 ip_local_out+0x2a/0x190 net/ipv4/ip_output.c:129
 __ip_queue_xmit+0x10df/0x1b10 net/ipv4/ip_output.c:534
 __tcp_transmit_skb+0x2d18/0x47c0 net/ipv4/tcp_output.c:1716
 tcp_transmit_skb net/ipv4/tcp_output.c:1733 [inline]
 tcp_send_syn_data net/ipv4/tcp_output.c:4284 [inline]
 tcp_connect+0x3486/0x53c0 net/ipv4/tcp_output.c:4373
 tcp_v4_connect+0x1051/0x1950 net/ipv4/tcp_ipv4.c:345
 __inet_stream_connect+0x258/0xe00 net/ipv4/af_inet.c:684
 tcp_sendmsg_fastopen+0x3af/0x5f0 net/ipv4/tcp.c:1086
 tcp_sendmsg_locked+0x4cdc/0x55c0 net/ipv4/tcp.c:1182
 tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1452
 sock_sendmsg_nosec net/socket.c:788 [inline]
 __sock_sendmsg net/socket.c:802 [inline]
 ____sys_sendmsg+0x853/0xa20 net/socket.c:2698
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752
 __sys_sendmsg net/socket.c:2784 [inline]
 __do_sys_sendmsg net/socket.c:2789 [inline]
 __se_sys_sendmsg net/socket.c:2787 [inline]
 __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efd2dd9ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efd2ec3d028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007efd2e015fa0 RCX: 00007efd2dd9ce59
RDX: 000000003000c085 RSI: 0000200000000080 RDI: 0000000000000006
RBP: 00007efd2de32d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efd2e016038 R14: 00007efd2e015fa0 R15: 00007fffdaffa118
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: syz.1.869/9584
caller is cpu_mt+0x53/0xd0 net/netfilter/xt_cpu.c:37
CPU: 1 UID: 0 PID: 9584 Comm: syz.1.869 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xd3/0xe0 lib/smp_processor_id.c:47
 cpu_mt+0x53/0xd0 net/netfilter/xt_cpu.c:37
 __nft_match_eval net/netfilter/nft_compat.c:412 [inline]
 nft_match_eval+0x1ad/0x2b0 net/netfilter/nft_compat.c:442
 expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
 nft_do_chain+0x48d/0x1ad0 net/netfilter/nf_tables_core.c:285
 nft_do_chain_inet+0x360/0x4b0 net/netfilter/nft_chain_filter.c:162
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
 nf_hook+0x22a/0x3a0 include/linux/netfilter.h:273
 __ip_local_out+0x558/0x6a0 net/ipv4/ip_output.c:120
 ip_local_out+0x2a/0x190 net/ipv4/ip_output.c:129
 nf_send_reset+0xd47/0x14d0 net/ipv4/netfilter/nf_reject_ipv4.c:337
 nft_reject_inet_eval+0x3b2/0x690 net/netfilter/nft_reject_inet.c:31
 expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
 nft_do_chain+0x48d/0x1ad0 net/netfilter/nf_tables_core.c:285
 nft_do_chain_inet+0x360/0x4b0 net/netfilter/nft_chain_filter.c:162
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
 nf_hook+0x22a/0x3a0 include/linux/netfilter.h:273
 __ip_local_out+0x558/0x6a0 net/ipv4/ip_output.c:120
 ip_local_out+0x2a/0x190 net/ipv4/ip_output.c:129
 __ip_queue_xmit+0x10df/0x1b10 net/ipv4/ip_output.c:534
 __tcp_transmit_skb+0x2d18/0x47c0 net/ipv4/tcp_output.c:1716
 tcp_transmit_skb net/ipv4/tcp_output.c:1733 [inline]
 tcp_send_syn_data net/ipv4/tcp_output.c:4284 [inline]
 tcp_connect+0x3486/0x53c0 net/ipv4/tcp_output.c:4373
 tcp_v4_connect+0x1051/0x1950 net/ipv4/tcp_ipv4.c:345
 __inet_stream_connect+0x258/0xe00 net/ipv4/af_inet.c:684
 tcp_sendmsg_fastopen+0x3af/0x5f0 net/ipv4/tcp.c:1086
 tcp_sendmsg_locked+0x4cdc/0x55c0 net/ipv4/tcp.c:1182
 tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1452
 sock_sendmsg_nosec net/socket.c:788 [inline]
 __sock_sendmsg net/socket.c:802 [inline]
 ____sys_sendmsg+0x853/0xa20 net/socket.c:2698
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752
 __sys_sendmsg net/socket.c:2784 [inline]
 __do_sys_sendmsg net/socket.c:2789 [inline]
 __se_sys_sendmsg net/socket.c:2787 [inline]
 __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efd2dd9ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efd2ec3d028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007efd2e015fa0 RCX: 00007efd2dd9ce59
RDX: 000000003000c085 RSI: 0000200000000080 RDI: 0000000000000006
RBP: 00007efd2de32d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efd2e016038 R14: 00007efd2e015fa0 R15: 00007fffdaffa118
 </TASK>