[ 13.258250][ T311] ip (311) used greatest stack depth: 23848 bytes left [ 21.926882][ T371] GACT probability NOT on [ 21.947788][ T369] tc (369) used greatest stack depth: 23640 bytes left [ 22.487437][ T375] tc (375) used greatest stack depth: 23256 bytes left [ 22.627285][ T378] [ 22.627546][ T378] ============================= [ 22.627702][ T378] WARNING: suspicious RCU usage [ 22.628004][ T378] 6.14.0-rc6-virtme #1 Not tainted [ 22.628192][ T378] ----------------------------- [ 22.628359][ T378] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 22.628650][ T378] [ 22.628650][ T378] other info that might help us debug this: [ 22.628650][ T378] [ 22.628940][ T378] [ 22.628940][ T378] rcu_scheduler_active = 2, debug_locks = 1 [ 22.629175][ T378] 1 lock held by mausezahn/378: [ 22.629378][ T378] #0: ffffffff9d55b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 22.629693][ T378] [ 22.629693][ T378] stack backtrace: [ 22.629883][ T378] CPU: 0 UID: 0 PID: 378 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 22.629887][ T378] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 22.629889][ T378] Call Trace: [ 22.629891][ T378] [ 22.629894][ T378] dump_stack_lvl+0xb0/0xd0 [ 22.629901][ T378] lockdep_rcu_suspicious+0x1ea/0x280 [ 22.629911][ T378] dev_hard_start_xmit+0x2fc/0x3f0 [ 22.629922][ T378] __dev_queue_xmit+0xfaf/0x18d0 [ 22.629936][ T378] ? __pfx___dev_queue_xmit+0x10/0x10 [ 22.629940][ T378] ? packet_parse_headers+0x231/0x9c0 [ 22.629948][ T378] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 22.629955][ T378] ? __pfx_packet_parse_headers+0x10/0x10 [ 22.629959][ T378] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 22.629965][ T378] ? dev_get_by_index+0xb2/0x190 [ 22.629976][ T378] packet_snd+0xd0c/0x19d0 [ 22.629988][ T378] ? __lock_release+0x103/0x460 [ 22.629991][ T378] ? __might_fault+0x11b/0x170 [ 22.629998][ T378] ? __pfx_packet_snd+0x10/0x10 [ 22.630000][ T378] ? trace_lock_acquire+0x14c/0x1f0 [ 22.630003][ T378] ? __might_fault+0x11b/0x170 [ 22.630010][ T378] ? lock_acquire+0x32/0xc0 [ 22.630016][ T378] ? __might_fault+0x11b/0x170 [ 22.630026][ T378] __sys_sendto+0x3c3/0x450 [ 22.630032][ T378] ? __pfx___sys_sendto+0x10/0x10 [ 22.630047][ T378] ? sock_ioctl+0x3b6/0x590 [ 22.630051][ T378] ? __pfx___lock_release+0x10/0x10 [ 22.630059][ T378] ? __pfx___up_read+0x10/0x10 [ 22.630068][ T378] ? do_user_addr_fault+0x972/0xe30 [ 22.630077][ T378] ? do_user_addr_fault+0x97c/0xe30 [ 22.630084][ T378] __x64_sys_sendto+0xe0/0x1c0 [ 22.630087][ T378] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 22.630092][ T378] do_syscall_64+0xc1/0x1d0 [ 22.630100][ T378] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 22.630105][ T378] RIP: 0033:0x7f175bcb3a4a [ 22.630109][ 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 [ 22.630112][ T378] RSP: 002b:00007ffd6e6cefd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 22.630116][ T378] RAX: ffffffffffffffda RBX: 000000003edc09d0 RCX: 00007f175bcb3a4a [ 22.630118][ T378] RDX: 00000000000003c4 RSI: 000000003edc1022 RDI: 0000000000000005 [ 22.630120][ T378] RBP: 000000003edc1022 R08: 00007ffd6e6cefe0 R09: 0000000000000014 [ 22.630122][ T378] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 22.630124][ T378] R13: 00000000000003c4 R14: 00007ffd6e6cefe0 R15: 0000000000000000 [ 22.630143][ T378]