[ 13.018720][ T294] ip (294) used greatest stack depth: 23952 bytes left [ 23.000311][ T372] GACT probability NOT on [ 23.717756][ T379] [ 23.718188][ T379] ============================= [ 23.718460][ T379] WARNING: suspicious RCU usage [ 23.718733][ T379] 6.14.0-rc6-virtme #1 Not tainted [ 23.718993][ T379] ----------------------------- [ 23.719538][ T379] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 23.719984][ T379] [ 23.719984][ T379] other info that might help us debug this: [ 23.719984][ T379] [ 23.720515][ T379] [ 23.720515][ T379] rcu_scheduler_active = 2, debug_locks = 1 [ 23.720894][ T379] 1 lock held by mausezahn/379: [ 23.721167][ T379] #0: ffffffff89d5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 23.721655][ T379] [ 23.721655][ T379] stack backtrace: [ 23.721981][ T379] CPU: 3 UID: 0 PID: 379 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 23.721988][ T379] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.721991][ T379] Call Trace: [ 23.721993][ T379] [ 23.721997][ T379] dump_stack_lvl+0xb0/0xd0 [ 23.722008][ T379] lockdep_rcu_suspicious+0x1ea/0x280 [ 23.722026][ T379] dev_hard_start_xmit+0x2fc/0x3f0 [ 23.722045][ T379] __dev_queue_xmit+0xfaf/0x18d0 [ 23.722073][ T379] ? __pfx___dev_queue_xmit+0x10/0x10 [ 23.722080][ T379] ? packet_parse_headers+0x231/0x9c0 [ 23.722097][ T379] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 23.722107][ T379] ? __pfx_packet_parse_headers+0x10/0x10 [ 23.722115][ T379] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 23.722124][ T379] ? dev_get_by_index+0xb2/0x190 [ 23.722144][ T379] packet_snd+0xd0c/0x19d0 [ 23.722166][ T379] ? __lock_release+0x103/0x460 [ 23.722171][ T379] ? __might_fault+0x11b/0x170 [ 23.722183][ T379] ? __pfx_packet_snd+0x10/0x10 [ 23.722186][ T379] ? trace_lock_acquire+0x14c/0x1f0 [ 23.722191][ T379] ? __might_fault+0x11b/0x170 [ 23.722203][ T379] ? lock_acquire+0x32/0xc0 [ 23.722214][ T379] ? __might_fault+0x11b/0x170 [ 23.722234][ T379] __sys_sendto+0x3c3/0x450 [ 23.722244][ T379] ? __pfx___sys_sendto+0x10/0x10 [ 23.722273][ T379] ? sock_ioctl+0x3b6/0x590 [ 23.722279][ T379] ? __pfx___lock_release+0x10/0x10 [ 23.722294][ T379] ? __pfx___up_read+0x10/0x10 [ 23.722310][ T379] ? do_user_addr_fault+0x972/0xe30 [ 23.722326][ T379] ? do_user_addr_fault+0x97c/0xe30 [ 23.722339][ T379] __x64_sys_sendto+0xe0/0x1c0 [ 23.722347][ T379] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.722356][ T379] do_syscall_64+0xc1/0x1d0 [ 23.722368][ T379] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.722376][ T379] RIP: 0033:0x7f4f58b5ea4a [ 23.722383][ T379] 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 [ 23.722387][ T379] RSP: 002b:00007ffc2b5d47d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 23.722393][ T379] RAX: ffffffffffffffda RBX: 00000000276f19d0 RCX: 00007f4f58b5ea4a [ 23.722396][ T379] RDX: 00000000000003c4 RSI: 00000000276f2022 RDI: 0000000000000005 [ 23.722399][ T379] RBP: 00000000276f2022 R08: 00007ffc2b5d47e0 R09: 0000000000000014 [ 23.722402][ T379] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 23.722405][ T379] R13: 00000000000003c4 R14: 00007ffc2b5d47e0 R15: 0000000000000000 [ 23.722437][ T379]