[ 10.746342][ T250] ip (250) used greatest stack depth: 23664 bytes left [ 21.317498][ T348] GACT probability NOT on [ 21.457047][ T350] [ 21.457405][ T350] ============================= [ 21.457581][ T350] WARNING: suspicious RCU usage [ 21.457765][ T350] 6.14.0-rc6-virtme #1 Not tainted [ 21.458199][ T350] ----------------------------- [ 21.458370][ T350] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 21.458642][ T350] [ 21.458642][ T350] other info that might help us debug this: [ 21.458642][ T350] [ 21.458955][ T350] [ 21.458955][ T350] rcu_scheduler_active = 2, debug_locks = 1 [ 21.459213][ T350] 1 lock held by mausezahn/350: [ 21.459389][ T350] #0: ffffffffbc55b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 21.459693][ T350] [ 21.459693][ T350] stack backtrace: [ 21.459910][ T350] CPU: 2 UID: 0 PID: 350 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 21.459915][ T350] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 21.459917][ T350] Call Trace: [ 21.459919][ T350] [ 21.459922][ T350] dump_stack_lvl+0xb0/0xd0 [ 21.459932][ T350] lockdep_rcu_suspicious+0x1ea/0x280 [ 21.459944][ T350] dev_hard_start_xmit+0x2fc/0x3f0 [ 21.459955][ T350] __dev_queue_xmit+0xfaf/0x18d0 [ 21.459969][ T350] ? __pfx___dev_queue_xmit+0x10/0x10 [ 21.459974][ T350] ? packet_parse_headers+0x231/0x9c0 [ 21.459983][ T350] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 21.459990][ T350] ? __pfx_packet_parse_headers+0x10/0x10 [ 21.459994][ T350] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 21.460000][ T350] ? dev_get_by_index+0xb2/0x190 [ 21.460015][ T350] packet_snd+0xd0c/0x19d0 [ 21.460027][ T350] ? __lock_release+0x103/0x460 [ 21.460031][ T350] ? __might_fault+0x11b/0x170 [ 21.460040][ T350] ? __pfx_packet_snd+0x10/0x10 [ 21.460042][ T350] ? trace_lock_acquire+0x14c/0x1f0 [ 21.460044][ T350] ? __might_fault+0x11b/0x170 [ 21.460051][ T350] ? lock_acquire+0x32/0xc0 [ 21.460057][ T350] ? __might_fault+0x11b/0x170 [ 21.460068][ T350] __sys_sendto+0x3c3/0x450 [ 21.460075][ T350] ? __pfx___sys_sendto+0x10/0x10 [ 21.460089][ T350] ? sock_ioctl+0x3b6/0x590 [ 21.460100][ T350] ? __pfx___up_read+0x10/0x10 [ 21.460109][ T350] ? do_user_addr_fault+0x374/0xe30 [ 21.460121][ T350] ? do_user_addr_fault+0x374/0xe30 [ 21.460128][ T350] __x64_sys_sendto+0xe0/0x1c0 [ 21.460132][ T350] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 21.460137][ T350] do_syscall_64+0xc1/0x1d0 [ 21.460146][ T350] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 21.460151][ T350] RIP: 0033:0x7f248c16ca4a [ 21.460156][ 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 [ 21.460159][ T350] RSP: 002b:00007ffd3eed7538 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 21.460163][ T350] RAX: ffffffffffffffda RBX: 00000000283199d0 RCX: 00007f248c16ca4a [ 21.460166][ T350] RDX: 0000000000000062 RSI: 00000000283195c2 RDI: 0000000000000005 [ 21.460168][ T350] RBP: 00000000283195c2 R08: 00007ffd3eed7540 R09: 0000000000000014 [ 21.460170][ T350] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 21.460172][ T350] R13: 0000000000000062 R14: 00007ffd3eed7540 R15: 0000000000000000 [ 21.460188][ T350] [ 25.244545][ T439] Mirror/redirect action on