[ 4296.510956][ T1321] netdevsim netdevsim540 eni540np1: renamed from eth1 [ 4296.612410][ T1319] netdevsim netdevsim459 eni459np1: renamed from eth0 [ 4298.624632][ T1348] [ 4298.624968][ T1348] ============================= [ 4298.625221][ T1348] WARNING: suspicious RCU usage [ 4298.625940][ T1348] 6.12.0-rc7-virtme #1 Not tainted [ 4298.626137][ T1348] ----------------------------- [ 4298.626318][ T1348] net/core/dev.c:6300 RCU-list traversed in non-reader section!! [ 4298.626618][ T1348] [ 4298.626618][ T1348] other info that might help us debug this: [ 4298.626618][ T1348] [ 4298.626989][ T1348] [ 4298.626989][ T1348] rcu_scheduler_active = 2, debug_locks = 1 [ 4298.627268][ T1348] 2 locks held by busy_poller/1348: [ 4298.627478][ T1348] #0: ffffffffba45a3f0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 [ 4298.627871][ T1348] #1: ffffffffba402988 (rtnl_mutex){+.+.}-{3:3}, at: netdev_nl_napi_set_doit+0xe4/0x640 [ 4298.628218][ T1348] [ 4298.628218][ T1348] stack backtrace: [ 4298.628449][ T1348] CPU: 1 UID: 0 PID: 1348 Comm: busy_poller Not tainted 6.12.0-rc7-virtme #1 [ 4298.628769][ T1348] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4298.629008][ T1348] Call Trace: [ 4298.629152][ T1348] [ 4298.629256][ T1348] dump_stack_lvl+0xb0/0xd0 [ 4298.629457][ T1348] lockdep_rcu_suspicious+0x1ea/0x280 [ 4298.629654][ T1348] napi_by_id+0x134/0x170 [ 4298.629803][ T1348] netdev_nl_napi_set_doit+0xeb/0x640 [ 4298.629981][ T1348] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4298.630208][ T1348] ? __nla_parse+0x26/0x30 [ 4298.630389][ T1348] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x162/0x240 [ 4298.630665][ T1348] genl_family_rcv_msg_doit+0x1d4/0x2b0 [ 4298.630857][ T1348] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 4298.631096][ T1348] ? __pfx___lock_release+0x10/0x10 [ 4298.631283][ T1348] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4298.631486][ T1348] ? validate_chain+0x1fe/0xae0 [ 4298.631683][ T1348] genl_family_rcv_msg+0x347/0x5b0 [ 4298.631875][ T1348] ? __pfx_genl_family_rcv_msg+0x10/0x10 [ 4298.632070][ T1348] ? __pfx_netdev_nl_napi_set_doit+0x10/0x10 [ 4298.632308][ T1348] genl_rcv_msg+0xa3/0x140 [ 4298.632505][ T1348] netlink_rcv_skb+0x130/0x360 [ 4298.632701][ T1348] ? __pfx_genl_rcv_msg+0x10/0x10 [ 4298.632895][ T1348] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4298.633098][ T1348] ? genl_rcv+0x19/0x40 [ 4298.633246][ T1348] ? __pfx_down_read+0x10/0x10 [ 4298.633441][ T1348] ? netlink_deliver_tap+0x13e/0x340 [ 4298.633634][ T1348] genl_rcv+0x28/0x40 [ 4298.633778][ T1348] netlink_unicast+0x44b/0x710 [ 4298.633980][ T1348] ? __pfx_netlink_unicast+0x10/0x10 [ 4298.634178][ T1348] ? __wake_up+0x44/0x60 [ 4298.634336][ T1348] netlink_sendmsg+0x723/0xbe0 [ 4298.634531][ T1348] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4298.634727][ T1348] ? fdget+0x52/0x1e0 [ 4298.634886][ T1348] __sys_sendto+0x377/0x400 [ 4298.635084][ T1348] ? __pfx___sys_sendto+0x10/0x10 [ 4298.635291][ T1348] ? do_user_addr_fault+0x972/0xe30 [ 4298.635479][ T1348] ? __pfx___lock_release+0x10/0x10 [ 4298.635669][ T1348] ? __up_read+0x1a7/0x780 [ 4298.635849][ T1348] ? trace_lock_acquire+0x14d/0x1f0 [ 4298.636035][ T1348] ? __pfx___up_read+0x10/0x10 [ 4298.636226][ T1348] ? do_user_addr_fault+0x972/0xe30 [ 4298.636423][ T1348] ? do_user_addr_fault+0x97c/0xe30 [ 4298.636618][ T1348] __x64_sys_sendto+0xe0/0x1c0 [ 4298.636802][ T1348] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4298.637033][ T1348] do_syscall_64+0xc1/0x1d0 [ 4298.637234][ T1348] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4298.637469][ T1348] RIP: 0033:0x7f182140f700 [ 4298.637671][ T1348] Code: ff ff 64 89 02 eb bd 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20 [ 4298.638348][ T1348] RSP: 002b:00007ffdb47d7518 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 4298.638627][ T1348] RAX: ffffffffffffffda RBX: 00007ffdb47d7530 RCX: 00007f182140f700 [ 4298.638925][ T1348] RDX: 0000000000000034 RSI: 00007f182127c270 RDI: 0000000000000005 [ 4298.639214][ T1348] RBP: 00007f182127c010 R08: 0000000000000000 R09: 0000000000000000 [ 4298.639495][ T1348] R10: 0000000000000000 R11: 0000000000000246 R12: 000000003bf892f0 [ 4298.639801][ T1348] R13: 00007f182127c010 R14: 000000003bf89310 R15: 00007f182150a000 [ 4298.640112][ T1348]