[ 21.223339][ T347] GACT probability NOT on [ 21.355003][ T350] [ 21.355346][ T350] ============================= [ 21.355510][ T350] WARNING: suspicious RCU usage [ 21.355661][ T350] 6.14.0-rc6-virtme #1 Not tainted [ 21.355942][ T350] ----------------------------- [ 21.356092][ T350] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 21.356366][ T350] [ 21.356366][ T350] other info that might help us debug this: [ 21.356366][ T350] [ 21.356669][ T350] [ 21.356669][ T350] rcu_scheduler_active = 2, debug_locks = 1 [ 21.356892][ T350] 1 lock held by mausezahn/350: [ 21.357048][ T350] #0: ffffffffa855b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 21.357339][ T350] [ 21.357339][ T350] stack backtrace: [ 21.357528][ T350] CPU: 3 UID: 0 PID: 350 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 21.357532][ T350] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 21.357534][ T350] Call Trace: [ 21.357536][ T350] [ 21.357538][ T350] dump_stack_lvl+0xb0/0xd0 [ 21.357545][ T350] lockdep_rcu_suspicious+0x1ea/0x280 [ 21.357556][ T350] dev_hard_start_xmit+0x2fc/0x3f0 [ 21.357566][ T350] __dev_queue_xmit+0xfaf/0x18d0 [ 21.357580][ T350] ? __pfx___dev_queue_xmit+0x10/0x10 [ 21.357584][ T350] ? packet_parse_headers+0x231/0x9c0 [ 21.357593][ T350] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 21.357599][ T350] ? __pfx_packet_parse_headers+0x10/0x10 [ 21.357603][ T350] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 21.357608][ T350] ? dev_get_by_index+0xb2/0x190 [ 21.357619][ T350] packet_snd+0xd0c/0x19d0 [ 21.357631][ T350] ? __lock_release+0x103/0x460 [ 21.357634][ T350] ? __might_fault+0x11b/0x170 [ 21.357641][ T350] ? __pfx_packet_snd+0x10/0x10 [ 21.357643][ T350] ? trace_lock_acquire+0x14c/0x1f0 [ 21.357645][ T350] ? __might_fault+0x11b/0x170 [ 21.357652][ T350] ? lock_acquire+0x32/0xc0 [ 21.357658][ T350] ? __might_fault+0x11b/0x170 [ 21.357669][ T350] __sys_sendto+0x3c3/0x450 [ 21.357675][ T350] ? __pfx___sys_sendto+0x10/0x10 [ 21.357690][ T350] ? sock_ioctl+0x3b6/0x590 [ 21.357699][ T350] ? __pfx___up_read+0x10/0x10 [ 21.357707][ T350] ? do_user_addr_fault+0x374/0xe30 [ 21.357717][ T350] ? do_user_addr_fault+0x374/0xe30 [ 21.357724][ T350] __x64_sys_sendto+0xe0/0x1c0 [ 21.357728][ T350] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 21.357733][ T350] do_syscall_64+0xc1/0x1d0 [ 21.357740][ T350] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 21.357745][ T350] RIP: 0033:0x7effe97a8a4a [ 21.357750][ T350] 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 [ 21.357752][ T350] RSP: 002b:00007ffe916e2ea8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 21.357756][ T350] RAX: ffffffffffffffda RBX: 000000002f52e9d0 RCX: 00007effe97a8a4a [ 21.357758][ T350] RDX: 0000000000000062 RSI: 000000002f52e5c2 RDI: 0000000000000005 [ 21.357759][ T350] RBP: 000000002f52e5c2 R08: 00007ffe916e2eb0 R09: 0000000000000014 [ 21.357761][ T350] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 21.357763][ T350] R13: 0000000000000062 R14: 00007ffe916e2eb0 R15: 0000000000000000 [ 21.357779][ T350]