[ 235.808173][ T1699] [ 235.808415][ T1699] ============================= [ 235.808574][ T1699] WARNING: suspicious RCU usage [ 235.808749][ T1699] 6.14.0-rc6-virtme #1 Not tainted [ 235.808905][ T1699] ----------------------------- [ 235.809057][ T1699] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 235.809328][ T1699] [ 235.809328][ T1699] other info that might help us debug this: [ 235.809328][ T1699] [ 235.809878][ T1699] [ 235.809878][ T1699] rcu_scheduler_active = 2, debug_locks = 1 [ 235.810116][ T1699] 1 lock held by gro/1699: [ 235.810273][ T1699] #0: ffffffff9656f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0 [ 235.810579][ T1699] [ 235.810579][ T1699] stack backtrace: [ 235.810770][ T1699] CPU: 1 UID: 0 PID: 1699 Comm: gro Not tainted 6.14.0-rc6-virtme #1 [ 235.810774][ T1699] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 235.810776][ T1699] Call Trace: [ 235.810778][ T1699] [ 235.810780][ T1699] dump_stack_lvl+0xb0/0xd0 [ 235.810788][ T1699] lockdep_rcu_suspicious+0x1ea/0x280 [ 235.810799][ T1699] dev_hard_start_xmit+0x2fc/0x3f0 [ 235.810810][ T1699] __dev_queue_xmit+0xfaa/0x18d0 [ 235.810814][ T1699] ? _copy_from_iter+0x1d2/0x12e0 [ 235.810832][ T1699] ? __pfx___dev_queue_xmit+0x10/0x10 [ 235.810837][ T1699] ? packet_parse_headers+0x243/0x9d0 [ 235.810847][ T1699] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 235.810854][ T1699] ? __pfx_packet_parse_headers+0x10/0x10 [ 235.810859][ T1699] ? skb_copy_datagram_from_iter+0xe6/0x6e0 [ 235.810866][ T1699] ? dev_get_by_index+0xb2/0x190 [ 235.810876][ T1699] packet_snd+0xd0d/0x19c0 [ 235.810889][ T1699] ? __lock_release+0x103/0x460 [ 235.810891][ T1699] ? __might_fault+0x11b/0x170 [ 235.810898][ T1699] ? __pfx_packet_snd+0x10/0x10 [ 235.810900][ T1699] ? trace_lock_acquire+0x14c/0x1f0 [ 235.810908][ T1699] ? lock_acquire+0x32/0xc0 [ 235.810914][ T1699] ? __might_fault+0x11b/0x170 [ 235.810925][ T1699] __sys_sendto+0x3c3/0x450 [ 235.810931][ T1699] ? __pfx___sys_sendto+0x10/0x10 [ 235.810945][ T1699] ? __lock_release+0x103/0x460 [ 235.810947][ T1699] ? do_user_addr_fault+0x972/0xe30 [ 235.810953][ T1699] ? __pfx___lock_release+0x10/0x10 [ 235.810960][ T1699] ? __pfx___up_read+0x10/0x10 [ 235.810967][ T1699] ? do_user_addr_fault+0x972/0xe30 [ 235.810975][ T1699] ? do_user_addr_fault+0x97c/0xe30 [ 235.810982][ T1699] __x64_sys_sendto+0xe0/0x1c0 [ 235.810987][ T1699] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 235.810991][ T1699] do_syscall_64+0xc1/0x1d0 [ 235.810998][ T1699] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 235.811002][ T1699] RIP: 0033:0x7fd785186a4a [ 235.811006][ T1699] 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 [ 235.811009][ T1699] RSP: 002b:00007ffcf3ca9f78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 235.811012][ T1699] RAX: ffffffffffffffda RBX: 000000000000009a RCX: 00007fd785186a4a [ 235.811014][ T1699] RDX: 000000000000009a RSI: 00000000004392e0 RDI: 0000000000000005 [ 235.811016][ T1699] RBP: 0000000000000064 R08: 00007ffcf3ca9fe0 R09: 0000000000000014 [ 235.811017][ T1699] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 235.811019][ T1699] R13: 00007ffcf3ca9fe0 R14: 0000000000000036 R15: 00007ffcf3cab9fd [ 235.811036][ T1699]