[ 26.189135][ T260] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 26.206412][ T266] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 26.286790][ T258] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 31.900997][ T264] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 31.907784][ T273] devlink (273) used greatest stack depth: 22272 bytes left [ 57.503430][ T328] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 57.544777][ T324] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 57.622254][ T330] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 57.646785][ T321] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 62.504549][ T416] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 62.520712][ T415] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 62.602475][ T419] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 63.167306][ T419] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 63.187819][ T423] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 63.273815][ T416] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 63.387489][ T415] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 64.275905][ T416] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 64.304743][ T423] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 64.332375][ T419] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 64.436029][ T415] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 68.899321][ T544] Failed to register fib notifier [ 69.377963][ T416] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 69.394015][ T415] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 69.430027][ T423] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 69.492603][ T419] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 83.109363][ T792] netdevsim netdevsim10 eni10npf0vf0: renamed from eth0 [ 83.127562][ T797] netdevsim netdevsim10 eni10npf0vf3: renamed from eth3 [ 83.215367][ T793] netdevsim netdevsim10 eni10npf0vf1: renamed from eth1 [ 83.312820][ T794] netdevsim netdevsim10 eni10npf0vf2: renamed from eth2 [ 93.260336][ T928] [ 93.260440][ T928] ====================================================== [ 93.260614][ T928] WARNING: possible circular locking dependency detected [ 93.260789][ T928] 6.12.0-rc5-virtme #1 Not tainted [ 93.260929][ T928] ------------------------------------------------------ [ 93.261105][ T928] modprobe/928 is trying to acquire lock: [ 93.261249][ T928] ffffffffc05fc4e0 (&ops->srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x21/0x2b0 [ 93.261518][ T928] [ 93.261518][ T928] but task is already holding lock: [ 93.261731][ T928] ffffffff891d3b88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 93.261987][ T928] [ 93.261987][ T928] which lock already depends on the new lock. [ 93.261987][ T928] [ 93.262265][ T928] [ 93.262265][ T928] the existing dependency chain (in reverse order) is: [ 93.262507][ T928] [ 93.262507][ T928] -> #1 (rtnl_mutex){+.+.}-{3:3}: [ 93.262721][ T928] __lock_acquire+0xb3f/0x1580 [ 93.262871][ T928] lock_acquire.part.0+0xeb/0x330 [ 93.263011][ T928] __mutex_lock+0x149/0xac0 [ 93.263153][ T928] rtnl_newlink+0x64f/0xa20 [ 93.263296][ T928] rtnetlink_rcv_msg+0x712/0xc10 [ 93.263440][ T928] netlink_rcv_skb+0x130/0x360 [ 93.263585][ T928] netlink_unicast+0x44b/0x710 [ 93.263729][ T928] netlink_sendmsg+0x723/0xbe0 [ 93.263869][ T928] ____sys_sendmsg+0x7ac/0xa10 [ 93.264015][ T928] ___sys_sendmsg+0xee/0x170 [ 93.264165][ T928] __sys_sendmsg+0xcd/0x170 [ 93.264306][ T928] do_syscall_64+0xc1/0x1d0 [ 93.264448][ T928] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 93.264630][ T928] [ 93.264630][ T928] -> #0 (&ops->srcu){.+.+}-{0:0}: [ 93.264857][ T928] check_prev_add+0x182/0xce0 [ 93.264999][ T928] validate_chain+0x71d/0x9b0 [ 93.265140][ T928] __lock_acquire+0xb3f/0x1580 [ 93.265286][ T928] lock_sync+0xd7/0x180 [ 93.265428][ T928] __synchronize_srcu+0x9e/0x2b0 [ 93.265569][ T928] __rtnl_link_unregister+0x14a/0x380 [ 93.265745][ T928] rtnl_link_unregister+0x14c/0x1c0 [ 93.265889][ T928] nsim_module_exit+0x10/0x1a [netdevsim] [ 93.266082][ T928] __do_sys_delete_module+0x2bd/0x470 [ 93.266259][ T928] do_syscall_64+0xc1/0x1d0 [ 93.266400][ T928] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 93.266583][ T928] [ 93.266583][ T928] other info that might help us debug this: [ 93.266583][ T928] [ 93.266862][ T928] Possible unsafe locking scenario: [ 93.266862][ T928] [ 93.267069][ T928] CPU0 CPU1 [ 93.267209][ T928] ---- ---- [ 93.267347][ T928] lock(rtnl_mutex); [ 93.267464][ T928] lock(&ops->srcu); [ 93.267640][ T928] lock(rtnl_mutex); [ 93.267819][ T928] sync(&ops->srcu); [ 93.267940][ T928] [ 93.267940][ T928] *** DEADLOCK *** [ 93.267940][ T928] [ 93.268144][ T928] 2 locks held by modprobe/928: [ 93.268285][ T928] #0: ffffffff891b8890 (pernet_ops_rwsem){++++}-{3:3}, at: rtnl_link_unregister+0xa6/0x1c0 [ 93.268572][ T928] #1: ffffffff891d3b88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 93.268817][ T928] [ 93.268817][ T928] stack backtrace: [ 93.268994][ T928] CPU: 3 UID: 0 PID: 928 Comm: modprobe Not tainted 6.12.0-rc5-virtme #1 [ 93.269205][ T928] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 93.269516][ T928] Call Trace: [ 93.269634][ T928] [ 93.269708][ T928] dump_stack_lvl+0x82/0xd0 [ 93.269856][ T928] print_circular_bug+0x2e2/0x4b0 [ 93.269999][ T928] check_noncircular+0x2f9/0x3e0 [ 93.270147][ T928] ? __pfx_check_noncircular+0x10/0x10 [ 93.270295][ T928] ? __kernel_text_address+0x12/0x40 [ 93.270437][ T928] ? unwind_get_return_address+0x5e/0xa0 [ 93.270582][ T928] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 93.270762][ T928] ? arch_stack_walk+0xa2/0xf0 [ 93.270907][ T928] check_prev_add+0x182/0xce0 [ 93.271048][ T928] ? __pfx_stack_trace_save+0x10/0x10 [ 93.271194][ T928] validate_chain+0x71d/0x9b0 [ 93.271351][ T928] ? __pfx_validate_chain+0x10/0x10 [ 93.271503][ T928] ? mark_lock+0x335/0x3e0 [ 93.271647][ T928] ? __pfx_validate_chain+0x10/0x10 [ 93.271788][ T928] __lock_acquire+0xb3f/0x1580 [ 93.271933][ T928] lock_sync+0xd7/0x180 [ 93.272044][ T928] ? __synchronize_srcu+0x21/0x2b0 [ 93.272185][ T928] __synchronize_srcu+0x9e/0x2b0 [ 93.272325][ T928] ? __pfx___synchronize_srcu+0x10/0x10 [ 93.272468][ T928] ? hlock_class+0x4e/0x130 [ 93.272612][ T928] ? mark_lock+0x38/0x3e0 [ 93.272727][ T928] ? kvm_clock_get_cycles+0x18/0x30 [ 93.272870][ T928] ? ktime_get_mono_fast_ns+0x84/0x360 [ 93.273012][ T928] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 93.273189][ T928] __rtnl_link_unregister+0x14a/0x380 [ 93.273331][ T928] ? mark_lock+0x38/0x3e0 [ 93.273437][ T928] ? __pfx___rtnl_link_unregister+0x10/0x10 [ 93.273612][ T928] ? mark_held_locks+0x9e/0xe0 [ 93.273756][ T928] rtnl_link_unregister+0x14c/0x1c0 [ 93.273898][ T928] ? __pfx_rtnl_link_unregister+0x10/0x10 [ 93.274037][ T928] ? __pfx_woken_wake_function+0x10/0x10 [ 93.274181][ T928] nsim_module_exit+0x10/0x1a [netdevsim] [ 93.274335][ T928] __do_sys_delete_module+0x2bd/0x470 [ 93.274478][ T928] ? __pfx___do_sys_delete_module+0x10/0x10 [ 93.274659][ T928] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 93.274835][ T928] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 93.275011][ T928] ? trace_rcu_segcb_stats+0x37/0x1e0 [ 93.275157][ T928] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 93.275330][ T928] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 93.275509][ T928] do_syscall_64+0xc1/0x1d0 [ 93.275651][ T928] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 93.275828][ T928] RIP: 0033:0x7f979bd815ab [ 93.275975][ T928] 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 [ 93.276477][ T928] RSP: 002b:00007ffe93e1f528 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 93.276693][ T928] RAX: ffffffffffffffda RBX: 00005601ca17d980 RCX: 00007f979bd815ab [ 93.276909][ T928] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 00005601ca17d9e8 [ 93.277118][ T928] RBP: 00005601ca17d980 R08: 0000000000000000 R09: 0000000000000000 [ 93.277330][ T928] R10: 00007f979bee0ac0 R11: 0000000000000206 R12: 00005601ca17d9e8 [ 93.277543][ T928] R13: 0000000000000000 R14: 00005601ca17d9e8 R15: 00007ffe93e21858 [ 93.277756][ T928]