[ 112.561952][ T2048] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 112.594376][ T2051] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 112.656510][ T2054] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 112.704135][ T2056] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 118.613481][ T2064] devlink (2064) used greatest stack depth: 22128 bytes left [ 144.348152][ T2118] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 144.390861][ T2122] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 144.469444][ T2121] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 144.597263][ T2120] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 149.971238][ T2210] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 150.007279][ T2209] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 150.075766][ T2212] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 150.521375][ T2209] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 150.644752][ T2205] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 150.649526][ T2210] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 150.694080][ T2211] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 151.932976][ T2209] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 151.981988][ T2207] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 152.004315][ T2211] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 152.089059][ T2212] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 156.914739][ T2334] Failed to register fib notifier [ 157.444555][ T2209] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 157.448051][ T2212] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 157.461857][ T2211] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 157.547612][ T2207] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 171.585472][ T2583] netdevsim netdevsim10 eni10npf0vf0: renamed from eth0 [ 171.621550][ T2584] netdevsim netdevsim10 eni10npf0vf1: renamed from eth1 [ 171.650947][ T2587] netdevsim netdevsim10 eni10npf0vf2: renamed from eth2 [ 171.674409][ T2588] netdevsim netdevsim10 eni10npf0vf3: renamed from eth3 [ 182.671063][ T2718] [ 182.671222][ T2718] ====================================================== [ 182.671485][ T2718] WARNING: possible circular locking dependency detected [ 182.671738][ T2718] 6.12.0-rc5-virtme #1 Not tainted [ 182.671938][ T2718] ------------------------------------------------------ [ 182.672200][ T2718] modprobe/2718 is trying to acquire lock: [ 182.672462][ T2718] ffffffffc05bd4e0 (&ops->srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x21/0x2b0 [ 182.672852][ T2718] [ 182.672852][ T2718] but task is already holding lock: [ 182.673163][ T2718] ffffffffa59d3b88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 182.673545][ T2718] [ 182.673545][ T2718] which lock already depends on the new lock. [ 182.673545][ T2718] [ 182.673948][ T2718] [ 182.673948][ T2718] the existing dependency chain (in reverse order) is: [ 182.674327][ T2718] [ 182.674327][ T2718] -> #1 (rtnl_mutex){+.+.}-{3:3}: [ 182.674655][ T2718] __lock_acquire+0xb3f/0x1580 [ 182.674886][ T2718] lock_acquire.part.0+0xeb/0x330 [ 182.675111][ T2718] __mutex_lock+0x149/0xac0 [ 182.675340][ T2718] rtnl_newlink+0x64f/0xa20 [ 182.675549][ T2718] rtnetlink_rcv_msg+0x712/0xc10 [ 182.675759][ T2718] netlink_rcv_skb+0x130/0x360 [ 182.675977][ T2718] netlink_unicast+0x44b/0x710 [ 182.676191][ T2718] netlink_sendmsg+0x723/0xbe0 [ 182.676404][ T2718] ____sys_sendmsg+0x7ac/0xa10 [ 182.676617][ T2718] ___sys_sendmsg+0xee/0x170 [ 182.676839][ T2718] __sys_sendmsg+0xcd/0x170 [ 182.677048][ T2718] do_syscall_64+0xc1/0x1d0 [ 182.677215][ T2718] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 182.677393][ T2718] [ 182.677393][ T2718] -> #0 (&ops->srcu){.+.+}-{0:0}: [ 182.677607][ T2718] check_prev_add+0x182/0xce0 [ 182.677799][ T2718] validate_chain+0x71d/0x9b0 [ 182.678019][ T2718] __lock_acquire+0xb3f/0x1580 [ 182.678240][ T2718] lock_sync+0xd7/0x180 [ 182.678439][ T2718] __synchronize_srcu+0x9e/0x2b0 [ 182.678580][ T2718] __rtnl_link_unregister+0x14a/0x380 [ 182.678771][ T2718] rtnl_link_unregister+0x14c/0x1c0 [ 182.678911][ T2718] nsim_module_exit+0x10/0x1a [netdevsim] [ 182.679104][ T2718] __do_sys_delete_module+0x2bd/0x470 [ 182.679280][ T2718] do_syscall_64+0xc1/0x1d0 [ 182.679417][ T2718] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 182.679600][ T2718] [ 182.679600][ T2718] other info that might help us debug this: [ 182.679600][ T2718] [ 182.679894][ T2718] Possible unsafe locking scenario: [ 182.679894][ T2718] [ 182.680108][ T2718] CPU0 CPU1 [ 182.680247][ T2718] ---- ---- [ 182.680389][ T2718] lock(rtnl_mutex); [ 182.680503][ T2718] lock(&ops->srcu); [ 182.680691][ T2718] lock(rtnl_mutex); [ 182.680872][ T2718] sync(&ops->srcu); [ 182.680984][ T2718] [ 182.680984][ T2718] *** DEADLOCK *** [ 182.680984][ T2718] [ 182.681188][ T2718] 2 locks held by modprobe/2718: [ 182.681335][ T2718] #0: ffffffffa59b8890 (pernet_ops_rwsem){++++}-{3:3}, at: rtnl_link_unregister+0xa6/0x1c0 [ 182.681628][ T2718] #1: ffffffffa59d3b88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 182.681884][ T2718] [ 182.681884][ T2718] stack backtrace: [ 182.682059][ T2718] CPU: 1 UID: 0 PID: 2718 Comm: modprobe Not tainted 6.12.0-rc5-virtme #1 [ 182.682276][ T2718] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 182.682587][ T2718] Call Trace: [ 182.682715][ T2718] [ 182.682792][ T2718] dump_stack_lvl+0x82/0xd0 [ 182.682937][ T2718] print_circular_bug+0x2e2/0x4b0 [ 182.683083][ T2718] check_noncircular+0x2f9/0x3e0 [ 182.683225][ T2718] ? __pfx_check_noncircular+0x10/0x10 [ 182.683369][ T2718] ? __kernel_text_address+0x12/0x40 [ 182.683516][ T2718] ? unwind_get_return_address+0x5e/0xa0 [ 182.683667][ T2718] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 182.683846][ T2718] ? arch_stack_walk+0xa2/0xf0 [ 182.683997][ T2718] check_prev_add+0x182/0xce0 [ 182.684139][ T2718] ? __pfx_stack_trace_save+0x10/0x10 [ 182.684281][ T2718] validate_chain+0x71d/0x9b0 [ 182.684424][ T2718] ? __pfx_validate_chain+0x10/0x10 [ 182.684572][ T2718] ? mark_lock+0x335/0x3e0 [ 182.684721][ T2718] ? __pfx_validate_chain+0x10/0x10 [ 182.684861][ T2718] __lock_acquire+0xb3f/0x1580 [ 182.685004][ T2718] lock_sync+0xd7/0x180 [ 182.685109][ T2718] ? __synchronize_srcu+0x21/0x2b0 [ 182.685252][ T2718] __synchronize_srcu+0x9e/0x2b0 [ 182.685391][ T2718] ? __pfx___synchronize_srcu+0x10/0x10 [ 182.685529][ T2718] ? hlock_class+0x4e/0x130 [ 182.685681][ T2718] ? mark_lock+0x38/0x3e0 [ 182.685794][ T2718] ? kvm_clock_get_cycles+0x18/0x30 [ 182.685933][ T2718] ? ktime_get_mono_fast_ns+0x84/0x360 [ 182.686075][ T2718] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 182.686251][ T2718] __rtnl_link_unregister+0x14a/0x380 [ 182.686392][ T2718] ? mark_lock+0x38/0x3e0 [ 182.686502][ T2718] ? __pfx___rtnl_link_unregister+0x10/0x10 [ 182.686682][ T2718] ? mark_held_locks+0x9e/0xe0 [ 182.686831][ T2718] rtnl_link_unregister+0x14c/0x1c0 [ 182.686975][ T2718] ? __pfx_rtnl_link_unregister+0x10/0x10 [ 182.687113][ T2718] ? __pfx_woken_wake_function+0x10/0x10 [ 182.687255][ T2718] nsim_module_exit+0x10/0x1a [netdevsim] [ 182.687411][ T2718] __do_sys_delete_module+0x2bd/0x470 [ 182.687549][ T2718] ? __pfx___do_sys_delete_module+0x10/0x10 [ 182.687767][ T2718] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 182.688041][ T2718] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 182.688311][ T2718] ? trace_rcu_segcb_stats+0x37/0x1e0 [ 182.688461][ T2718] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 182.688638][ T2718] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 182.688826][ T2718] do_syscall_64+0xc1/0x1d0 [ 182.688967][ T2718] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 182.689140][ T2718] RIP: 0033:0x7f58028955ab [ 182.689288][ T2718] Code: 73 01 c3 48 8b 0d 55 98 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 25 98 1b 00 f7 d8 64 89 01 48 [ 182.690008][ T2718] RSP: 002b:00007ffec4bde748 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 182.690312][ T2718] RAX: ffffffffffffffda RBX: 000055ae94f8e980 RCX: 00007f58028955ab [ 182.690617][ T2718] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055ae94f8e9e8 [ 182.690920][ T2718] RBP: 000055ae94f8e980 R08: 0000000000000000 R09: 0000000000000000 [ 182.691244][ T2718] R10: 00007f58029f4ac0 R11: 0000000000000206 R12: 000055ae94f8e9e8 [ 182.691571][ T2718] R13: 0000000000000000 R14: 000055ae94f8e9e8 R15: 00007ffec4be0a78 [ 182.691891][ T2718]