[ 92.962477][ T1246] [ 92.962742][ T1246] ============================= [ 92.962928][ T1246] WARNING: suspicious RCU usage [ 92.963097][ T1246] 6.14.0-rc6-virtme #1 Not tainted [ 92.963475][ T1246] ----------------------------- [ 92.963643][ T1246] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 92.963926][ T1246] [ 92.963926][ T1246] other info that might help us debug this: [ 92.963926][ T1246] [ 92.964236][ T1246] [ 92.964236][ T1246] rcu_scheduler_active = 2, debug_locks = 1 [ 92.964477][ T1246] 1 lock held by gro/1246: [ 92.964644][ T1246] #0: ffffffff8956f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0 [ 92.964962][ T1246] [ 92.964962][ T1246] stack backtrace: [ 92.965187][ T1246] CPU: 2 UID: 0 PID: 1246 Comm: gro Not tainted 6.14.0-rc6-virtme #1 [ 92.965192][ T1246] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 92.965194][ T1246] Call Trace: [ 92.965195][ T1246] [ 92.965198][ T1246] dump_stack_lvl+0xb0/0xd0 [ 92.965206][ T1246] lockdep_rcu_suspicious+0x1ea/0x280 [ 92.965217][ T1246] dev_hard_start_xmit+0x2fc/0x3f0 [ 92.965229][ T1246] __dev_queue_xmit+0xfaa/0x18d0 [ 92.965233][ T1246] ? _copy_from_iter+0x1d2/0x12e0 [ 92.965250][ T1246] ? __pfx___dev_queue_xmit+0x10/0x10 [ 92.965255][ T1246] ? packet_parse_headers+0x243/0x9d0 [ 92.965265][ T1246] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 92.965272][ T1246] ? __pfx_packet_parse_headers+0x10/0x10 [ 92.965277][ T1246] ? skb_copy_datagram_from_iter+0xe6/0x6e0 [ 92.965284][ T1246] ? dev_get_by_index+0xb2/0x190 [ 92.965294][ T1246] packet_snd+0xd0d/0x19c0 [ 92.965306][ T1246] ? __lock_release+0x103/0x460 [ 92.965309][ T1246] ? __might_fault+0x11b/0x170 [ 92.965315][ T1246] ? __pfx_packet_snd+0x10/0x10 [ 92.965318][ T1246] ? trace_lock_acquire+0x14c/0x1f0 [ 92.965326][ T1246] ? lock_acquire+0x32/0xc0 [ 92.965331][ T1246] ? __might_fault+0x11b/0x170 [ 92.965342][ T1246] __sys_sendto+0x3c3/0x450 [ 92.965349][ T1246] ? __pfx___sys_sendto+0x10/0x10 [ 92.965363][ T1246] ? __lock_release+0x103/0x460 [ 92.965365][ T1246] ? do_user_addr_fault+0x972/0xe30 [ 92.965371][ T1246] ? __pfx___lock_release+0x10/0x10 [ 92.965378][ T1246] ? __pfx___up_read+0x10/0x10 [ 92.965385][ T1246] ? do_user_addr_fault+0x972/0xe30 [ 92.965393][ T1246] ? do_user_addr_fault+0x97c/0xe30 [ 92.965400][ T1246] __x64_sys_sendto+0xe0/0x1c0 [ 92.965405][ T1246] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 92.965409][ T1246] do_syscall_64+0xc1/0x1d0 [ 92.965416][ T1246] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.965420][ T1246] RIP: 0033:0x7f3a7810ba4a [ 92.965425][ T1246] 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 [ 92.965427][ T1246] RSP: 002b:00007ffc805e7db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 92.965431][ T1246] RAX: ffffffffffffffda RBX: 000000000000009a RCX: 00007f3a7810ba4a [ 92.965433][ T1246] RDX: 000000000000009a RSI: 00000000004392e0 RDI: 0000000000000005 [ 92.965435][ T1246] RBP: 0000000000000064 R08: 00007ffc805e7e20 R09: 0000000000000014 [ 92.965437][ T1246] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 92.965438][ T1246] R13: 00007ffc805e7e20 R14: 0000000000000036 R15: 00007ffc805e89fd [ 92.965455][ T1246]