[ 12.580511][ T283] ip (283) used greatest stack depth: 23952 bytes left [ 13.466728][ T305] 8021q: 802.1Q VLAN Support v1.8 [ 18.569844][ T435] br10: port 1(veth1.10) entered blocking state [ 18.570318][ T435] br10: port 1(veth1.10) entered disabled state [ 18.570986][ T435] veth1.10: entered allmulticast mode [ 18.571182][ T435] veth1: entered allmulticast mode [ 18.573147][ T435] veth1.10: entered promiscuous mode [ 18.574145][ T435] veth1: entered promiscuous mode [ 18.716318][ T440] br10: port 2(veth2.10) entered blocking state [ 18.716608][ T440] br10: port 2(veth2.10) entered disabled state [ 18.716904][ T440] veth2.10: entered allmulticast mode [ 18.717086][ T440] veth2: entered allmulticast mode [ 18.719062][ T440] veth2.10: entered promiscuous mode [ 18.719248][ T440] veth2: entered promiscuous mode [ 18.835351][ T445] br10: port 2(veth2.10) entered blocking state [ 18.835782][ T445] br10: port 2(veth2.10) entered forwarding state [ 18.836498][ T445] br10: port 1(veth1.10) entered blocking state [ 18.836764][ T445] br10: port 1(veth1.10) entered forwarding state [ 18.845868][ T445] ip (445) used greatest stack depth: 23920 bytes left [ 19.830741][ T481] br11: port 1(veth1.11) entered blocking state [ 19.831030][ T481] br11: port 1(veth1.11) entered disabled state [ 19.831337][ T481] veth1.11: entered allmulticast mode [ 19.833507][ T481] veth1.11: entered promiscuous mode [ 19.974003][ T486] br11: port 2(veth2.11) entered blocking state [ 19.974729][ T486] br11: port 2(veth2.11) entered disabled state [ 19.975031][ T486] veth2.11: entered allmulticast mode [ 19.976971][ T486] veth2.11: entered promiscuous mode [ 20.122929][ T491] br11: port 2(veth2.11) entered blocking state [ 20.123242][ T491] br11: port 2(veth2.11) entered forwarding state [ 20.123704][ T491] br11: port 1(veth1.11) entered blocking state [ 20.123972][ T491] br11: port 1(veth1.11) entered forwarding state [ 21.184352][ T527] br12: port 1(veth1.12) entered blocking state [ 21.184661][ T527] br12: port 1(veth1.12) entered disabled state [ 21.184962][ T527] veth1.12: entered allmulticast mode [ 21.187318][ T527] veth1.12: entered promiscuous mode [ 21.307721][ T532] br12: port 2(veth2.12) entered blocking state [ 21.308058][ T532] br12: port 2(veth2.12) entered disabled state [ 21.308373][ T532] veth2.12: entered allmulticast mode [ 21.310587][ T532] veth2.12: entered promiscuous mode [ 21.442846][ T537] br12: port 2(veth2.12) entered blocking state [ 21.443152][ T537] br12: port 2(veth2.12) entered forwarding state [ 21.443603][ T537] br12: port 1(veth1.12) entered blocking state [ 21.443845][ T537] br12: port 1(veth1.12) entered forwarding state [ 32.132570][ T629] [ 32.132929][ T629] ============================= [ 32.133151][ T629] WARNING: suspicious RCU usage [ 32.133504][ T629] 6.14.0-rc6-virtme #1 Not tainted [ 32.133814][ T629] ----------------------------- [ 32.134082][ T629] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 32.134515][ T629] [ 32.134515][ T629] other info that might help us debug this: [ 32.134515][ T629] [ 32.134813][ T629] [ 32.134813][ T629] rcu_scheduler_active = 2, debug_locks = 1 [ 32.135053][ T629] 1 lock held by mausezahn/629: [ 32.135210][ T629] #0: ffffffff9255b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 32.135524][ T629] [ 32.135524][ T629] stack backtrace: [ 32.135715][ T629] CPU: 1 UID: 0 PID: 629 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 32.135720][ T629] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 32.135722][ T629] Call Trace: [ 32.135724][ T629] [ 32.135727][ T629] dump_stack_lvl+0xb0/0xd0 [ 32.135736][ T629] lockdep_rcu_suspicious+0x1ea/0x280 [ 32.135749][ T629] dev_hard_start_xmit+0x2fc/0x3f0 [ 32.135759][ T629] __dev_queue_xmit+0xfaf/0x18d0 [ 32.135765][ T629] ? __pfx__copy_from_iter+0x10/0x10 [ 32.135775][ T629] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 32.135788][ T629] ? __pfx___dev_queue_xmit+0x10/0x10 [ 32.135792][ T629] ? packet_parse_headers+0x231/0x9c0 [ 32.135801][ T629] ? copy_page_from_iter+0xbd/0x120 [ 32.135806][ T629] ? __pfx_packet_parse_headers+0x10/0x10 [ 32.135811][ T629] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 32.135826][ T629] packet_snd+0xd0c/0x19d0 [ 32.135838][ T629] ? __lock_release+0x103/0x460 [ 32.135841][ T629] ? __might_fault+0x11b/0x170 [ 32.135849][ T629] ? __pfx_packet_snd+0x10/0x10 [ 32.135852][ T629] ? trace_lock_acquire+0x14c/0x1f0 [ 32.135854][ T629] ? __might_fault+0x11b/0x170 [ 32.135861][ T629] ? lock_acquire+0x32/0xc0 [ 32.135868][ T629] ? __might_fault+0x11b/0x170 [ 32.135878][ T629] __sys_sendto+0x3c3/0x450 [ 32.135884][ T629] ? __pfx___sys_sendto+0x10/0x10 [ 32.135899][ T629] ? sock_ioctl+0x3b6/0x590 [ 32.135902][ T629] ? __pfx___lock_release+0x10/0x10 [ 32.135910][ T629] ? __pfx___up_read+0x10/0x10 [ 32.135919][ T629] ? do_user_addr_fault+0x972/0xe30 [ 32.135929][ T629] ? do_user_addr_fault+0x97c/0xe30 [ 32.135935][ T629] __x64_sys_sendto+0xe0/0x1c0 [ 32.135939][ T629] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 32.135944][ T629] do_syscall_64+0xc1/0x1d0 [ 32.135953][ T629] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 32.135959][ T629] RIP: 0033:0x7fa472485a4a [ 32.135964][ T629] 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 [ 32.135967][ T629] RSP: 002b:00007ffc84b92358 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 32.135971][ T629] RAX: ffffffffffffffda RBX: 000000002981c9d0 RCX: 00007fa472485a4a [ 32.135973][ T629] RDX: 0000000000001f6a RSI: 000000002981f8e2 RDI: 0000000000000005 [ 32.135975][ T629] RBP: 000000002981f8e2 R08: 00007ffc84b92360 R09: 0000000000000014 [ 32.135977][ T629] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 32.135978][ T629] R13: 0000000000001f6a R14: 00007ffc84b92360 R15: 0000000000000000 [ 32.135994][ T629] [ 429.586502][ T1969] br12: port 2(veth2.12) entered disabled state [ 429.670806][ T1971] br12: port 1(veth1.12) entered disabled state [ 429.866181][ T1975] veth2.12: left allmulticast mode [ 429.866504][ T1975] veth2.12: left promiscuous mode [ 429.867054][ T1975] br12: port 2(veth2.12) entered disabled state [ 429.876675][ T1975] ip (1975) used greatest stack depth: 23808 bytes left [ 429.952958][ T1977] veth1.12: left allmulticast mode [ 429.953210][ T1977] veth1.12: left promiscuous mode [ 429.953728][ T1977] br12: port 1(veth1.12) entered disabled state [ 430.512740][ T1987] br11: port 2(veth2.11) entered disabled state [ 430.610501][ T1989] br11: port 1(veth1.11) entered disabled state [ 430.790413][ T1993] veth2.11: left allmulticast mode [ 430.790713][ T1993] veth2.11: left promiscuous mode [ 430.791206][ T1993] br11: port 2(veth2.11) entered disabled state [ 430.895684][ T1995] veth1.11: left allmulticast mode [ 430.895983][ T1995] veth1.11: left promiscuous mode [ 430.896539][ T1995] br11: port 1(veth1.11) entered disabled state [ 431.374333][ T2003] br10: port 2(veth2.10) entered disabled state [ 431.466265][ T2005] br10: port 1(veth1.10) entered disabled state [ 431.696881][ T2009] veth2.10: left allmulticast mode [ 431.697128][ T2009] veth2: left allmulticast mode [ 431.697345][ T2009] veth2.10: left promiscuous mode [ 431.697529][ T2009] veth2: left promiscuous mode [ 431.698025][ T2009] br10: port 2(veth2.10) entered disabled state [ 431.793208][ T2011] veth1.10: left allmulticast mode [ 431.793485][ T2011] veth1: left allmulticast mode [ 431.793690][ T2011] veth1.10: left promiscuous mode [ 431.793880][ T2011] veth1: left promiscuous mode [ 431.795068][ T2011] br10: port 1(veth1.10) entered disabled state