[ 10.222684][ T251] ip (251) used greatest stack depth: 23536 bytes left [ 12.409932][ T308] 8021q: 802.1Q VLAN Support v1.8 [ 15.633519][ T379] GACT probability NOT on [ 16.941758][ T416] br10: port 1(veth1.10) entered blocking state [ 16.942864][ T416] br10: port 1(veth1.10) entered disabled state [ 16.943318][ T416] veth1.10: entered allmulticast mode [ 16.943575][ T416] veth1: entered allmulticast mode [ 16.945698][ T416] veth1.10: entered promiscuous mode [ 16.945952][ T416] veth1: entered promiscuous mode [ 17.398754][ T433] br11: port 1(veth1.11) entered blocking state [ 17.399116][ T433] br11: port 1(veth1.11) entered disabled state [ 17.399839][ T433] veth1.11: entered allmulticast mode [ 17.402823][ T433] veth1.11: entered promiscuous mode [ 18.193849][ T463] br10: port 2(veth2.10) entered blocking state [ 18.194216][ T463] br10: port 2(veth2.10) entered disabled state [ 18.194527][ T463] veth2.10: entered allmulticast mode [ 18.194723][ T463] veth2: entered allmulticast mode [ 18.196736][ T463] veth2.10: entered promiscuous mode [ 18.196971][ T463] veth2: entered promiscuous mode [ 18.664685][ T480] br11: port 2(veth2.11) entered blocking state [ 18.664972][ T480] br11: port 2(veth2.11) entered disabled state [ 18.665273][ T480] veth2.11: entered allmulticast mode [ 18.667231][ T480] veth2.11: entered promiscuous mode [ 19.052256][ T492] br10: port 2(veth2.10) entered blocking state [ 19.052803][ T492] br10: port 2(veth2.10) entered forwarding state [ 19.053576][ T492] br10: port 1(veth1.10) entered blocking state [ 19.053864][ T492] br10: port 1(veth1.10) entered forwarding state [ 19.176408][ T497] br11: port 2(veth2.11) entered blocking state [ 19.176729][ T497] br11: port 2(veth2.11) entered forwarding state [ 19.177267][ T497] br11: port 1(veth1.11) entered blocking state [ 19.177558][ T497] br11: port 1(veth1.11) entered forwarding state [ 27.900533][ T548] [ 27.900841][ T548] ============================= [ 27.901005][ T548] WARNING: suspicious RCU usage [ 27.901178][ T548] 6.14.0-rc6-virtme #1 Not tainted [ 27.901400][ T548] ----------------------------- [ 27.901581][ T548] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 27.901861][ T548] [ 27.901861][ T548] other info that might help us debug this: [ 27.901861][ T548] [ 27.902167][ T548] [ 27.902167][ T548] rcu_scheduler_active = 2, debug_locks = 1 [ 27.902413][ T548] 1 lock held by mausezahn/548: [ 27.902566][ T548] #0: ffffffff8e95b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 27.902857][ T548] [ 27.902857][ T548] stack backtrace: [ 27.903048][ T548] CPU: 1 UID: 0 PID: 548 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 27.903053][ T548] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 27.903055][ T548] Call Trace: [ 27.903057][ T548] [ 27.903060][ T548] dump_stack_lvl+0xb0/0xd0 [ 27.903068][ T548] lockdep_rcu_suspicious+0x1ea/0x280 [ 27.903080][ T548] dev_hard_start_xmit+0x2fc/0x3f0 [ 27.903091][ T548] __dev_queue_xmit+0xfaf/0x18d0 [ 27.903096][ T548] ? __pfx__copy_from_iter+0x10/0x10 [ 27.903106][ T548] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 27.903120][ T548] ? __pfx___dev_queue_xmit+0x10/0x10 [ 27.903124][ T548] ? packet_parse_headers+0x231/0x9c0 [ 27.903136][ T548] ? copy_page_from_iter+0xbd/0x120 [ 27.903141][ T548] ? __pfx_packet_parse_headers+0x10/0x10 [ 27.903147][ T548] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 27.903173][ T548] packet_snd+0xd0c/0x19d0 [ 27.903185][ T548] ? __lock_release+0x103/0x460 [ 27.903189][ T548] ? __might_fault+0x11b/0x170 [ 27.903198][ T548] ? __pfx_packet_snd+0x10/0x10 [ 27.903200][ T548] ? trace_lock_acquire+0x14c/0x1f0 [ 27.903203][ T548] ? __might_fault+0x11b/0x170 [ 27.903210][ T548] ? lock_acquire+0x32/0xc0 [ 27.903216][ T548] ? __might_fault+0x11b/0x170 [ 27.903227][ T548] __sys_sendto+0x3c3/0x450 [ 27.903233][ T548] ? __pfx___sys_sendto+0x10/0x10 [ 27.903248][ T548] ? sock_ioctl+0x3b6/0x590 [ 27.903253][ T548] ? __pfx___lock_release+0x10/0x10 [ 27.903261][ T548] ? __pfx___up_read+0x10/0x10 [ 27.903271][ T548] ? do_user_addr_fault+0x972/0xe30 [ 27.903280][ T548] ? do_user_addr_fault+0x97c/0xe30 [ 27.903287][ T548] __x64_sys_sendto+0xe0/0x1c0 [ 27.903291][ T548] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 27.903296][ T548] do_syscall_64+0xc1/0x1d0 [ 27.903305][ T548] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 27.903311][ T548] RIP: 0033:0x7f2e6a0f9a4a [ 27.903316][ T548] 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 [ 27.903319][ T548] RSP: 002b:00007fff286d6e18 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 27.903323][ T548] RAX: ffffffffffffffda RBX: 000000001c9f39d0 RCX: 00007f2e6a0f9a4a [ 27.903325][ T548] RDX: 0000000000001f6a RSI: 000000001c9f68e2 RDI: 0000000000000005 [ 27.903327][ T548] RBP: 000000001c9f68e2 R08: 00007fff286d6e20 R09: 0000000000000014 [ 27.903329][ T548] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 27.903332][ T548] R13: 0000000000001f6a R14: 00007fff286d6e20 R15: 0000000000000000 [ 27.903356][ T548] [ 45.595604][ T622] br11: port 2(veth2.11) entered disabled state [ 45.596877][ T622] br11: port 1(veth1.11) entered disabled state [ 45.694998][ T624] br10: port 2(veth2.10) entered disabled state [ 45.696031][ T624] br10: port 1(veth1.10) entered disabled state [ 45.880187][ T628] veth2.11: left allmulticast mode [ 45.880491][ T628] veth2.11: left promiscuous mode [ 45.881116][ T628] br11: port 2(veth2.11) entered disabled state [ 46.213986][ T636] veth2.10: left allmulticast mode [ 46.214306][ T636] veth2: left allmulticast mode [ 46.214543][ T636] veth2.10: left promiscuous mode [ 46.214735][ T636] veth2: left promiscuous mode [ 46.215275][ T636] br10: port 2(veth2.10) entered disabled state [ 46.749089][ T646] veth1.11: left allmulticast mode [ 46.750523][ T646] veth1.11: left promiscuous mode [ 46.751447][ T646] br11: port 1(veth1.11) entered disabled state [ 47.085588][ T652] veth1.10: left allmulticast mode [ 47.085834][ T652] veth1: left allmulticast mode [ 47.086034][ T652] veth1.10: left promiscuous mode [ 47.086236][ T652] veth1: left promiscuous mode [ 47.086732][ T652] br10: port 1(veth1.10) entered disabled state