[ 10.374090][ T247] seq (247) used greatest stack depth: 24256 bytes left [ 22.462539][ T370] GACT probability NOT on [ 23.121359][ T378] [ 23.121722][ T378] ============================= [ 23.122184][ T378] WARNING: suspicious RCU usage [ 23.122339][ T378] 6.14.0-rc6-virtme #1 Not tainted [ 23.122491][ T378] ----------------------------- [ 23.122647][ T378] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 23.122906][ T378] [ 23.122906][ T378] other info that might help us debug this: [ 23.122906][ T378] [ 23.123205][ T378] [ 23.123205][ T378] rcu_scheduler_active = 2, debug_locks = 1 [ 23.123453][ T378] 1 lock held by mausezahn/378: [ 23.123607][ T378] #0: ffffffffa435b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 23.123890][ T378] [ 23.123890][ T378] stack backtrace: [ 23.124080][ T378] CPU: 0 UID: 0 PID: 378 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 23.124084][ T378] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.124086][ T378] Call Trace: [ 23.124088][ T378] [ 23.124091][ T378] dump_stack_lvl+0xb0/0xd0 [ 23.124103][ T378] lockdep_rcu_suspicious+0x1ea/0x280 [ 23.124115][ T378] dev_hard_start_xmit+0x2fc/0x3f0 [ 23.124126][ T378] __dev_queue_xmit+0xfaf/0x18d0 [ 23.124140][ T378] ? __pfx___dev_queue_xmit+0x10/0x10 [ 23.124144][ T378] ? packet_parse_headers+0x231/0x9c0 [ 23.124153][ T378] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 23.124160][ T378] ? __pfx_packet_parse_headers+0x10/0x10 [ 23.124165][ T378] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 23.124171][ T378] ? dev_get_by_index+0xb2/0x190 [ 23.124183][ T378] packet_snd+0xd0c/0x19d0 [ 23.124195][ T378] ? __lock_release+0x103/0x460 [ 23.124199][ T378] ? __might_fault+0x11b/0x170 [ 23.124207][ T378] ? __pfx_packet_snd+0x10/0x10 [ 23.124209][ T378] ? trace_lock_acquire+0x14c/0x1f0 [ 23.124212][ T378] ? __might_fault+0x11b/0x170 [ 23.124219][ T378] ? lock_acquire+0x32/0xc0 [ 23.124225][ T378] ? __might_fault+0x11b/0x170 [ 23.124236][ T378] __sys_sendto+0x3c3/0x450 [ 23.124242][ T378] ? __pfx___sys_sendto+0x10/0x10 [ 23.124257][ T378] ? sock_ioctl+0x3b6/0x590 [ 23.124262][ T378] ? __pfx___lock_release+0x10/0x10 [ 23.124270][ T378] ? __pfx___up_read+0x10/0x10 [ 23.124281][ T378] ? do_user_addr_fault+0x972/0xe30 [ 23.124291][ T378] ? do_user_addr_fault+0x97c/0xe30 [ 23.124298][ T378] __x64_sys_sendto+0xe0/0x1c0 [ 23.124301][ T378] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.124307][ T378] do_syscall_64+0xc1/0x1d0 [ 23.124315][ T378] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.124321][ T378] RIP: 0033:0x7f9722454a4a [ 23.124326][ T378] 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 [ 23.124329][ T378] RSP: 002b:00007ffc4facd788 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 23.124333][ T378] RAX: ffffffffffffffda RBX: 00000000387879d0 RCX: 00007f9722454a4a [ 23.124335][ T378] RDX: 00000000000003c4 RSI: 0000000038788022 RDI: 0000000000000005 [ 23.124337][ T378] RBP: 0000000038788022 R08: 00007ffc4facd790 R09: 0000000000000014 [ 23.124339][ T378] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 23.124341][ T378] R13: 00000000000003c4 R14: 00007ffc4facd790 R15: 0000000000000000 [ 23.124357][ T378]