[ 131.792531][ T1196] ip6_gre: GRE over IPv6 tunneling driver [ 142.069184][ T1280] [ 142.069540][ T1280] ============================= [ 142.069705][ T1280] WARNING: suspicious RCU usage [ 142.069863][ T1280] 6.14.0-rc6-virtme #1 Not tainted [ 142.070395][ T1280] ----------------------------- [ 142.070572][ T1280] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 142.070853][ T1280] [ 142.070853][ T1280] other info that might help us debug this: [ 142.070853][ T1280] [ 142.071159][ T1280] [ 142.071159][ T1280] rcu_scheduler_active = 2, debug_locks = 1 [ 142.071403][ T1280] 1 lock held by mausezahn/1280: [ 142.071559][ T1280] #0: ffffffffb375b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 142.071859][ T1280] [ 142.071859][ T1280] stack backtrace: [ 142.072067][ T1280] CPU: 3 UID: 0 PID: 1280 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 142.072071][ T1280] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 142.072073][ T1280] Call Trace: [ 142.072075][ T1280] [ 142.072078][ T1280] dump_stack_lvl+0xb0/0xd0 [ 142.072087][ T1280] lockdep_rcu_suspicious+0x1ea/0x280 [ 142.072102][ T1280] dev_hard_start_xmit+0x2fc/0x3f0 [ 142.072112][ T1280] __dev_queue_xmit+0xfaf/0x18d0 [ 142.072127][ T1280] ? __pfx___dev_queue_xmit+0x10/0x10 [ 142.072131][ T1280] ? packet_parse_headers+0x231/0x9c0 [ 142.072140][ T1280] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 142.072148][ T1280] ? __pfx_packet_parse_headers+0x10/0x10 [ 142.072152][ T1280] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 142.072159][ T1280] ? dev_get_by_index+0xb2/0x190 [ 142.072171][ T1280] packet_snd+0xd0c/0x19d0 [ 142.072182][ T1280] ? __lock_release+0x103/0x460 [ 142.072186][ T1280] ? __might_fault+0x11b/0x170 [ 142.072194][ T1280] ? __pfx_packet_snd+0x10/0x10 [ 142.072196][ T1280] ? trace_lock_acquire+0x14c/0x1f0 [ 142.072199][ T1280] ? __might_fault+0x11b/0x170 [ 142.072206][ T1280] ? lock_acquire+0x32/0xc0 [ 142.072212][ T1280] ? __might_fault+0x11b/0x170 [ 142.072223][ T1280] __sys_sendto+0x3c3/0x450 [ 142.072230][ T1280] ? __pfx___sys_sendto+0x10/0x10 [ 142.072244][ T1280] ? sock_ioctl+0x3b6/0x590 [ 142.072255][ T1280] ? __pfx___up_read+0x10/0x10 [ 142.072264][ T1280] ? do_user_addr_fault+0x374/0xe30 [ 142.072275][ T1280] ? do_user_addr_fault+0x374/0xe30 [ 142.072283][ T1280] __x64_sys_sendto+0xe0/0x1c0 [ 142.072286][ T1280] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 142.072292][ T1280] do_syscall_64+0xc1/0x1d0 [ 142.072300][ T1280] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 142.072306][ T1280] RIP: 0033:0x7fdd1eb4ea4a [ 142.072311][ T1280] 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 [ 142.072315][ T1280] RSP: 002b:00007fff781d8d88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 142.072319][ T1280] RAX: ffffffffffffffda RBX: 000000002d1e29d0 RCX: 00007fdd1eb4ea4a [ 142.072321][ T1280] RDX: 0000000000000062 RSI: 000000002d1e25c2 RDI: 0000000000000005 [ 142.072323][ T1280] RBP: 000000002d1e25c2 R08: 00007fff781d8d90 R09: 0000000000000014 [ 142.072325][ T1280] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 142.072327][ T1280] R13: 0000000000000062 R14: 00007fff781d8d90 R15: 0000000000000000 [ 142.072343][ T1280]