[ 222.162920][ T4478] [ 222.163169][ T4478] ============================= [ 222.163329][ T4478] WARNING: suspicious RCU usage [ 222.163484][ T4478] 6.14.0-rc6-virtme #1 Not tainted [ 222.163642][ T4478] ----------------------------- [ 222.163807][ T4478] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 222.164073][ T4478] [ 222.164073][ T4478] other info that might help us debug this: [ 222.164073][ T4478] [ 222.164376][ T4478] [ 222.164376][ T4478] rcu_scheduler_active = 2, debug_locks = 1 [ 222.164641][ T4478] 1 lock held by gro/4478: [ 222.164811][ T4478] #0: ffffffff9656f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0 [ 222.165101][ T4478] [ 222.165101][ T4478] stack backtrace: [ 222.165298][ T4478] CPU: 0 UID: 0 PID: 4478 Comm: gro Not tainted 6.14.0-rc6-virtme #1 [ 222.165302][ T4478] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 222.165304][ T4478] Call Trace: [ 222.165306][ T4478] [ 222.165308][ T4478] dump_stack_lvl+0xb0/0xd0 [ 222.165316][ T4478] lockdep_rcu_suspicious+0x1ea/0x280 [ 222.165327][ T4478] dev_hard_start_xmit+0x2fc/0x3f0 [ 222.165339][ T4478] __dev_queue_xmit+0xfaa/0x18d0 [ 222.165342][ T4478] ? _copy_from_iter+0x1d2/0x12e0 [ 222.165360][ T4478] ? __pfx___dev_queue_xmit+0x10/0x10 [ 222.165365][ T4478] ? packet_parse_headers+0x243/0x9d0 [ 222.165376][ T4478] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 222.165383][ T4478] ? __pfx_packet_parse_headers+0x10/0x10 [ 222.165387][ T4478] ? skb_copy_datagram_from_iter+0xe6/0x6e0 [ 222.165394][ T4478] ? dev_get_by_index+0xb2/0x190 [ 222.165405][ T4478] packet_snd+0xd0d/0x19c0 [ 222.165417][ T4478] ? __lock_release+0x103/0x460 [ 222.165420][ T4478] ? __might_fault+0x11b/0x170 [ 222.165426][ T4478] ? __pfx_packet_snd+0x10/0x10 [ 222.165429][ T4478] ? trace_lock_acquire+0x14c/0x1f0 [ 222.165437][ T4478] ? lock_acquire+0x32/0xc0 [ 222.165443][ T4478] ? __might_fault+0x11b/0x170 [ 222.165454][ T4478] __sys_sendto+0x3c3/0x450 [ 222.165461][ T4478] ? __pfx___sys_sendto+0x10/0x10 [ 222.165474][ T4478] ? __lock_release+0x103/0x460 [ 222.165477][ T4478] ? do_user_addr_fault+0x972/0xe30 [ 222.165482][ T4478] ? __pfx___lock_release+0x10/0x10 [ 222.165490][ T4478] ? __pfx___up_read+0x10/0x10 [ 222.165497][ T4478] ? do_user_addr_fault+0x972/0xe30 [ 222.165504][ T4478] ? do_user_addr_fault+0x97c/0xe30 [ 222.165512][ T4478] __x64_sys_sendto+0xe0/0x1c0 [ 222.165516][ T4478] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 222.165521][ T4478] do_syscall_64+0xc1/0x1d0 [ 222.165528][ T4478] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 222.165532][ T4478] RIP: 0033:0x7fb0aa9b3a4a [ 222.165537][ T4478] 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 [ 222.165539][ T4478] RSP: 002b:00007ffd8267dd68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 222.165543][ T4478] RAX: ffffffffffffffda RBX: 000000000000009a RCX: 00007fb0aa9b3a4a [ 222.165545][ T4478] RDX: 000000000000009a RSI: 00000000004392e0 RDI: 0000000000000005 [ 222.165546][ T4478] RBP: 0000000000000064 R08: 00007ffd8267ddd0 R09: 0000000000000014 [ 222.165548][ T4478] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 222.165550][ T4478] R13: 00007ffd8267ddd0 R14: 0000000000000036 R15: 00007ffd8267e9fd [ 222.165566][ T4478]