[ 18.943836][ T311] GACT probability NOT on [ 19.188386][ T314] [ 19.188702][ T314] ============================= [ 19.188899][ T314] WARNING: suspicious RCU usage [ 19.189185][ T314] 6.14.0-rc6-virtme #1 Not tainted [ 19.189363][ T314] ----------------------------- [ 19.189529][ T314] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 19.189796][ T314] [ 19.189796][ T314] other info that might help us debug this: [ 19.189796][ T314] [ 19.190095][ T314] [ 19.190095][ T314] rcu_scheduler_active = 2, debug_locks = 1 [ 19.190346][ T314] 1 lock held by mausezahn/314: [ 19.190518][ T314] #0: ffffffffbbd5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 19.190818][ T314] [ 19.190818][ T314] stack backtrace: [ 19.191009][ T314] CPU: 0 UID: 0 PID: 314 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 19.191013][ T314] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 19.191015][ T314] Call Trace: [ 19.191017][ T314] [ 19.191019][ T314] dump_stack_lvl+0xb0/0xd0 [ 19.191027][ T314] lockdep_rcu_suspicious+0x1ea/0x280 [ 19.191037][ T314] dev_hard_start_xmit+0x2fc/0x3f0 [ 19.191047][ T314] __dev_queue_xmit+0xfaf/0x18d0 [ 19.191061][ T314] ? __pfx___dev_queue_xmit+0x10/0x10 [ 19.191065][ T314] ? packet_parse_headers+0x231/0x9c0 [ 19.191074][ T314] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 19.191080][ T314] ? __pfx_packet_parse_headers+0x10/0x10 [ 19.191084][ T314] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 19.191089][ T314] ? dev_get_by_index+0xb2/0x190 [ 19.191101][ T314] packet_snd+0xd0c/0x19d0 [ 19.191112][ T314] ? __lock_release+0x103/0x460 [ 19.191116][ T314] ? __might_fault+0x11b/0x170 [ 19.191122][ T314] ? __pfx_packet_snd+0x10/0x10 [ 19.191124][ T314] ? trace_lock_acquire+0x14c/0x1f0 [ 19.191127][ T314] ? __might_fault+0x11b/0x170 [ 19.191134][ T314] ? lock_acquire+0x32/0xc0 [ 19.191140][ T314] ? __might_fault+0x11b/0x170 [ 19.191151][ T314] __sys_sendto+0x3c3/0x450 [ 19.191157][ T314] ? __pfx___sys_sendto+0x10/0x10 [ 19.191171][ T314] ? sock_ioctl+0x3b6/0x590 [ 19.191181][ T314] ? __pfx___up_read+0x10/0x10 [ 19.191189][ T314] ? do_user_addr_fault+0x374/0xe30 [ 19.191199][ T314] ? do_user_addr_fault+0x374/0xe30 [ 19.191206][ T314] __x64_sys_sendto+0xe0/0x1c0 [ 19.191210][ T314] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 19.191215][ T314] do_syscall_64+0xc1/0x1d0 [ 19.191223][ T314] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 19.191227][ T314] RIP: 0033:0x7f0e6b513a4a [ 19.191231][ T314] 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 [ 19.191234][ T314] RSP: 002b:00007ffc3ff845b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 19.191238][ T314] RAX: ffffffffffffffda RBX: 000000003489a9d0 RCX: 00007f0e6b513a4a [ 19.191240][ T314] RDX: 0000000000000062 RSI: 000000003489a5c2 RDI: 0000000000000005 [ 19.191241][ T314] RBP: 000000003489a5c2 R08: 00007ffc3ff845c0 R09: 0000000000000014 [ 19.191244][ T314] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 19.191245][ T314] R13: 0000000000000062 R14: 00007ffc3ff845c0 R15: 0000000000000000 [ 19.191261][ T314] [ 35.693988][ T714] 8021q: 802.1Q VLAN Support v1.8 [ 37.217182][ T737] ip (737) used greatest stack depth: 23848 bytes left