[ 31.430189][ T257] tun: Universal TUN/TAP device driver, 1.6 [ 37.219580][ T288] [ 37.219955][ T288] ============================= [ 37.220444][ T288] WARNING: suspicious RCU usage [ 37.220616][ T288] 6.12.0-rc4-virtme #1 Not tainted [ 37.220790][ T288] ----------------------------- [ 37.220962][ T288] net/netfilter/nf_tables_api.c:3420 RCU-list traversed in non-reader section!! [ 37.221275][ T288] [ 37.221275][ T288] other info that might help us debug this: [ 37.221275][ T288] [ 37.221609][ T288] [ 37.221609][ T288] rcu_scheduler_active = 2, debug_locks = 1 [ 37.221974][ T288] 1 lock held by iptables/288: [ 37.222161][ T288] #0: ffff888006061ac8 (&nft_net->commit_mutex){+.+.}-{3:3}, at: nf_tables_valid_genid+0x2e/0xf0 [nf_tables] [ 37.222614][ T288] [ 37.222614][ T288] stack backtrace: [ 37.222826][ T288] CPU: 1 UID: 0 PID: 288 Comm: iptables Not tainted 6.12.0-rc4-virtme #1 [ 37.223084][ T288] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 37.223465][ T288] Call Trace: [ 37.223607][ T288] [ 37.223704][ T288] dump_stack_lvl+0xb0/0xd0 [ 37.223883][ T288] lockdep_rcu_suspicious+0x1ea/0x280 [ 37.224060][ T288] __nft_rule_lookup+0x114/0x150 [nf_tables] [ 37.224298][ T288] nf_tables_delrule+0x417/0xc90 [nf_tables] [ 37.224536][ T288] ? __lock_release+0x103/0x460 [ 37.224714][ T288] ? net_generic+0xb1/0x1f0 [ 37.224892][ T288] ? __pfx_nf_tables_delrule+0x10/0x10 [nf_tables] [ 37.225139][ T288] ? trace_lock_acquire+0x14d/0x1f0 [ 37.225318][ T288] ? __nla_validate_parse+0x1bc/0x3d0 [ 37.225499][ T288] nfnetlink_rcv_batch+0x83b/0x1560 [ 37.225685][ T288] ? __pfx_nfnetlink_rcv_batch+0x10/0x10 [ 37.225859][ T288] ? rcu_read_lock_any_held+0x7e/0xb0 [ 37.226030][ T288] ? find_stack+0xbc/0x140 [ 37.226211][ T288] ? rcu_read_lock_any_held+0x43/0xb0 [ 37.226381][ T288] ? validate_chain+0x1fe/0xae0 [ 37.226566][ T288] ? __pfx_validate_chain+0x10/0x10 [ 37.226744][ T288] ? __lock_acquire+0xb3f/0x1580 [ 37.226918][ T288] ? __pfx_validate_nla+0x10/0x10 [ 37.227096][ T288] ? find_held_lock+0x2c/0x110 [ 37.227271][ T288] ? __nla_validate_parse+0x1bc/0x3d0 [ 37.227450][ T288] nfnetlink_rcv+0x2c9/0x340 [ 37.227621][ T288] ? __pfx_nfnetlink_rcv+0x10/0x10 [ 37.227800][ T288] ? netlink_deliver_tap+0xc3/0x340 [ 37.227979][ T288] netlink_unicast+0x44b/0x710 [ 37.228160][ T288] ? __pfx_netlink_unicast+0x10/0x10 [ 37.228340][ T288] netlink_sendmsg+0x723/0xbe0 [ 37.228517][ T288] ? __pfx_netlink_sendmsg+0x10/0x10 [ 37.228690][ T288] ? __import_iovec+0x35d/0x5d0 [ 37.228869][ T288] ____sys_sendmsg+0x7ac/0xa10 [ 37.229044][ T288] ? __pfx_____sys_sendmsg+0x10/0x10 [ 37.229219][ T288] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 37.229437][ T288] ? sk_setsockopt+0x9e3/0x2cc0 [ 37.229610][ T288] ? __local_bh_enable_ip+0xa6/0x120 [ 37.229787][ T288] ___sys_sendmsg+0xee/0x170 [ 37.229962][ T288] ? __pfx____sys_sendmsg+0x10/0x10 [ 37.230136][ T288] ? __lock_acquire+0xb3f/0x1580 [ 37.230308][ T288] ? usage_skip+0x152/0x190 [ 37.230481][ T288] ? trace_kfree+0x2d/0xd0 [ 37.230656][ T288] ? kfree+0x2d/0x340 [ 37.230794][ T288] ? do_sock_setsockopt+0x15b/0x3a0 [ 37.230962][ T288] ? __pfx_do_sock_setsockopt+0x10/0x10 [ 37.231143][ T288] ? fdget+0x52/0x1e0 [ 37.231278][ T288] __sys_sendmsg+0xcd/0x170 [ 37.231452][ T288] ? __pfx___sys_sendmsg+0x10/0x10 [ 37.231621][ T288] ? __sys_setsockopt+0x104/0x1a0 [ 37.231799][ T288] ? __pfx___sys_setsockopt+0x10/0x10 [ 37.231991][ T288] do_syscall_64+0xc1/0x1d0 [ 37.232166][ T288] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 37.232378][ T288] RIP: 0033:0x7f99e3a457b7 [ 37.232557][ T288] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 37.233148][ T288] RSP: 002b:00007fff08eb9138 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 37.233414][ T288] RAX: ffffffffffffffda RBX: 00007fff08eb9140 RCX: 00007f99e3a457b7 [ 37.233670][ T288] RDX: 0000000000000000 RSI: 00007fff08eba1d0 RDI: 000000000000000c [ 37.233924][ T288] RBP: 00007fff08eba7d0 R08: 0000000000000004 R09: 0000000000000000 [ 37.234184][ T288] R10: 00007f99e3b46bd8 R11: 0000000000000246 R12: 0000000000004000 [ 37.234444][ T288] R13: 0000000000000001 R14: 00007fff08eb9150 R15: 00007fff08eba7f0 [ 37.234712][ T288]