[ 15.975752][ T341] ip (341) used greatest stack depth: 24152 bytes left [ 22.628448][ T368] GACT probability NOT on [ 23.256764][ T375] [ 23.257048][ T375] ============================= [ 23.257250][ T375] WARNING: suspicious RCU usage [ 23.257418][ T375] 6.14.0-rc6-virtme #1 Not tainted [ 23.257855][ T375] ----------------------------- [ 23.258037][ T375] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 23.258390][ T375] [ 23.258390][ T375] other info that might help us debug this: [ 23.258390][ T375] [ 23.258694][ T375] [ 23.258694][ T375] rcu_scheduler_active = 2, debug_locks = 1 [ 23.258938][ T375] 1 lock held by mausezahn/375: [ 23.259253][ T375] #0: ffffffff8815b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 23.259630][ T375] [ 23.259630][ T375] stack backtrace: [ 23.259835][ T375] CPU: 1 UID: 0 PID: 375 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 23.259840][ T375] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.259842][ T375] Call Trace: [ 23.259844][ T375] [ 23.259847][ T375] dump_stack_lvl+0xb0/0xd0 [ 23.259856][ T375] lockdep_rcu_suspicious+0x1ea/0x280 [ 23.259868][ T375] dev_hard_start_xmit+0x2fc/0x3f0 [ 23.259879][ T375] __dev_queue_xmit+0xfaf/0x18d0 [ 23.259893][ T375] ? __pfx___dev_queue_xmit+0x10/0x10 [ 23.259897][ T375] ? packet_parse_headers+0x231/0x9c0 [ 23.259906][ T375] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 23.259913][ T375] ? __pfx_packet_parse_headers+0x10/0x10 [ 23.259918][ T375] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 23.259924][ T375] ? dev_get_by_index+0xb2/0x190 [ 23.259936][ T375] packet_snd+0xd0c/0x19d0 [ 23.259948][ T375] ? __lock_release+0x103/0x460 [ 23.259952][ T375] ? __might_fault+0x11b/0x170 [ 23.259960][ T375] ? __pfx_packet_snd+0x10/0x10 [ 23.259962][ T375] ? trace_lock_acquire+0x14c/0x1f0 [ 23.259965][ T375] ? __might_fault+0x11b/0x170 [ 23.259972][ T375] ? lock_acquire+0x32/0xc0 [ 23.259978][ T375] ? __might_fault+0x11b/0x170 [ 23.259989][ T375] __sys_sendto+0x3c3/0x450 [ 23.259996][ T375] ? __pfx___sys_sendto+0x10/0x10 [ 23.260010][ T375] ? sock_ioctl+0x3b6/0x590 [ 23.260016][ T375] ? __pfx___lock_release+0x10/0x10 [ 23.260024][ T375] ? __pfx___up_read+0x10/0x10 [ 23.260034][ T375] ? do_user_addr_fault+0x972/0xe30 [ 23.260044][ T375] ? do_user_addr_fault+0x97c/0xe30 [ 23.260051][ T375] __x64_sys_sendto+0xe0/0x1c0 [ 23.260055][ T375] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.260060][ T375] do_syscall_64+0xc1/0x1d0 [ 23.260069][ T375] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.260075][ T375] RIP: 0033:0x7f67de0bca4a [ 23.260081][ T375] 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 [ 23.260084][ T375] RSP: 002b:00007ffe6d3bfdb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 23.260087][ T375] RAX: ffffffffffffffda RBX: 00000000006e29d0 RCX: 00007f67de0bca4a [ 23.260090][ T375] RDX: 00000000000003c4 RSI: 00000000006e3022 RDI: 0000000000000005 [ 23.260091][ T375] RBP: 00000000006e3022 R08: 00007ffe6d3bfdc0 R09: 0000000000000014 [ 23.260093][ T375] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 23.260095][ T375] R13: 00000000000003c4 R14: 00007ffe6d3bfdc0 R15: 0000000000000000 [ 23.260111][ T375] [ 25.689477][ T428] ip (428) used greatest stack depth: 23512 bytes left