[ 11.225594][ T249] ip (249) used greatest stack depth: 24312 bytes left [ 17.777328][ T354] 8021q: 802.1Q VLAN Support v1.8 [ 17.804274][ T353] ip (353) used greatest stack depth: 24240 bytes left [ 18.214257][ T360] gre: GRE over IPv4 demultiplexor driver [ 18.250272][ T360] ip6_gre: GRE over IPv6 tunneling driver [ 28.051185][ T444] GACT probability NOT on [ 28.458949][ T447] [ 28.459248][ T447] ============================= [ 28.459450][ T447] WARNING: suspicious RCU usage [ 28.459793][ T447] 6.14.0-rc6-virtme #1 Not tainted [ 28.459983][ T447] ----------------------------- [ 28.460162][ T447] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 28.460446][ T447] [ 28.460446][ T447] other info that might help us debug this: [ 28.460446][ T447] [ 28.460842][ T447] [ 28.460842][ T447] rcu_scheduler_active = 2, debug_locks = 1 [ 28.461100][ T447] 1 lock held by mausezahn/447: [ 28.461269][ T447] #0: ffffffffa315b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 28.461549][ T447] [ 28.461549][ T447] stack backtrace: [ 28.461739][ T447] CPU: 3 UID: 0 PID: 447 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 28.461743][ T447] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 28.461744][ T447] Call Trace: [ 28.461746][ T447] [ 28.461748][ T447] dump_stack_lvl+0xb0/0xd0 [ 28.461755][ T447] lockdep_rcu_suspicious+0x1ea/0x280 [ 28.461766][ T447] dev_hard_start_xmit+0x2fc/0x3f0 [ 28.461776][ T447] __dev_queue_xmit+0xfaf/0x18d0 [ 28.461790][ T447] ? __pfx___dev_queue_xmit+0x10/0x10 [ 28.461794][ T447] ? packet_parse_headers+0x231/0x9c0 [ 28.461803][ T447] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 28.461809][ T447] ? __pfx_packet_parse_headers+0x10/0x10 [ 28.461813][ T447] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 28.461818][ T447] ? dev_get_by_index+0xb2/0x190 [ 28.461829][ T447] packet_snd+0xd0c/0x19d0 [ 28.461841][ T447] ? __lock_release+0x103/0x460 [ 28.461844][ T447] ? __might_fault+0x11b/0x170 [ 28.461851][ T447] ? __pfx_packet_snd+0x10/0x10 [ 28.461853][ T447] ? trace_lock_acquire+0x14c/0x1f0 [ 28.461855][ T447] ? __might_fault+0x11b/0x170 [ 28.461862][ T447] ? lock_acquire+0x32/0xc0 [ 28.461869][ T447] ? __might_fault+0x11b/0x170 [ 28.461880][ T447] __sys_sendto+0x3c3/0x450 [ 28.461886][ T447] ? __pfx___sys_sendto+0x10/0x10 [ 28.461900][ T447] ? sock_ioctl+0x3b6/0x590 [ 28.461910][ T447] ? __pfx___up_read+0x10/0x10 [ 28.461918][ T447] ? do_user_addr_fault+0x374/0xe30 [ 28.461928][ T447] ? do_user_addr_fault+0x374/0xe30 [ 28.461935][ T447] __x64_sys_sendto+0xe0/0x1c0 [ 28.461939][ T447] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 28.461944][ T447] do_syscall_64+0xc1/0x1d0 [ 28.461952][ T447] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 28.461957][ T447] RIP: 0033:0x7f0f9686ea4a [ 28.461962][ T447] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89 [ 28.461964][ T447] RSP: 002b:00007ffdb528e168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 28.461968][ T447] RAX: ffffffffffffffda RBX: 000000000f41c9d0 RCX: 00007f0f9686ea4a [ 28.461970][ T447] RDX: 0000000000000062 RSI: 000000000f41c5c2 RDI: 0000000000000005 [ 28.461972][ T447] RBP: 000000000f41c5c2 R08: 00007ffdb528e170 R09: 0000000000000014 [ 28.461974][ T447] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 28.461975][ T447] R13: 0000000000000062 R14: 00007ffdb528e170 R15: 0000000000000000 [ 28.461991][ T447] [ 45.313222][ T658] ip (658) used greatest stack depth: 23832 bytes left