[ 26.972641][ T262] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 26.999701][ T268] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 27.072201][ T259] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 32.792141][ T274] devlink (274) used greatest stack depth: 21776 bytes left [ 32.801222][ T264] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 58.471664][ T331] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 58.513128][ T330] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 58.579288][ T322] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 58.625033][ T326] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 63.314228][ T420] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 63.344482][ T421] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 63.362762][ T412] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 63.875835][ T421] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 63.923826][ T418] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 63.954628][ T416] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 63.973759][ T412] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 64.444675][ T421] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 64.479387][ T422] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 64.557595][ T416] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 64.583330][ T420] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 65.901628][ T412] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 65.912959][ T422] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 65.929856][ T460] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 65.981297][ T418] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 70.707635][ T547] Failed to register fib notifier [ 71.188141][ T412] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 71.211207][ T460] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 71.297898][ T421] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 71.361271][ T422] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 84.793626][ T795] netdevsim netdevsim10 eni10npf0vf0: renamed from eth0 [ 84.835568][ T797] netdevsim netdevsim10 eni10npf0vf1: renamed from eth1 [ 84.938495][ T798] netdevsim netdevsim10 eni10npf0vf2: renamed from eth2 [ 85.062828][ T800] netdevsim netdevsim10 eni10npf0vf3: renamed from eth3 [ 95.336255][ T931] [ 95.336357][ T931] ====================================================== [ 95.336548][ T931] WARNING: possible circular locking dependency detected [ 95.336719][ T931] 6.12.0-rc5-virtme #1 Not tainted [ 95.336859][ T931] ------------------------------------------------------ [ 95.337032][ T931] modprobe/931 is trying to acquire lock: [ 95.337170][ T931] ffffffffc05834e0 (&ops->srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x21/0x2b0 [ 95.337425][ T931] [ 95.337425][ T931] but task is already holding lock: [ 95.337627][ T931] ffffffffa3fd4908 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 95.337879][ T931] [ 95.337879][ T931] which lock already depends on the new lock. [ 95.337879][ T931] [ 95.338150][ T931] [ 95.338150][ T931] the existing dependency chain (in reverse order) is: [ 95.338401][ T931] [ 95.338401][ T931] -> #1 (rtnl_mutex){+.+.}-{3:3}: [ 95.338605][ T931] __lock_acquire+0xb3f/0x1580 [ 95.338745][ T931] lock_acquire.part.0+0xeb/0x330 [ 95.338881][ T931] __mutex_lock+0x149/0xac0 [ 95.339018][ T931] rtnl_newlink+0x64f/0xa20 [ 95.339155][ T931] rtnetlink_rcv_msg+0x712/0xc10 [ 95.339290][ T931] netlink_rcv_skb+0x130/0x360 [ 95.339427][ T931] netlink_unicast+0x44b/0x710 [ 95.339580][ T931] netlink_sendmsg+0x723/0xbe0 [ 95.339719][ T931] ____sys_sendmsg+0x7ac/0xa10 [ 95.339861][ T931] ___sys_sendmsg+0xee/0x170 [ 95.340003][ T931] __sys_sendmsg+0xcd/0x170 [ 95.340141][ T931] do_syscall_64+0xc1/0x1d0 [ 95.340281][ T931] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.340455][ T931] [ 95.340455][ T931] -> #0 (&ops->srcu){.+.+}-{0:0}: [ 95.340663][ T931] check_prev_add+0x182/0xce0 [ 95.340805][ T931] validate_chain+0x71d/0x9b0 [ 95.340941][ T931] __lock_acquire+0xb3f/0x1580 [ 95.341080][ T931] lock_sync+0xd7/0x180 [ 95.341218][ T931] __synchronize_srcu+0x9e/0x2b0 [ 95.341358][ T931] __rtnl_link_unregister+0x14a/0x380 [ 95.341530][ T931] rtnl_link_unregister+0x14c/0x1c0 [ 95.341671][ T931] nsim_module_exit+0x10/0x1a [netdevsim] [ 95.341858][ T931] __do_sys_delete_module+0x2bd/0x470 [ 95.342035][ T931] do_syscall_64+0xc1/0x1d0 [ 95.342172][ T931] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.342344][ T931] [ 95.342344][ T931] other info that might help us debug this: [ 95.342344][ T931] [ 95.342609][ T931] Possible unsafe locking scenario: [ 95.342609][ T931] [ 95.342811][ T931] CPU0 CPU1 [ 95.342948][ T931] ---- ---- [ 95.343082][ T931] lock(rtnl_mutex); [ 95.343210][ T931] lock(&ops->srcu); [ 95.343380][ T931] lock(rtnl_mutex); [ 95.343551][ T931] sync(&ops->srcu); [ 95.343656][ T931] [ 95.343656][ T931] *** DEADLOCK *** [ 95.343656][ T931] [ 95.343854][ T931] 2 locks held by modprobe/931: [ 95.343992][ T931] #0: ffffffffa3fb8890 (pernet_ops_rwsem){++++}-{3:3}, at: rtnl_link_unregister+0xa6/0x1c0 [ 95.344272][ T931] #1: ffffffffa3fd4908 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 95.344517][ T931] [ 95.344517][ T931] stack backtrace: [ 95.344686][ T931] CPU: 1 UID: 0 PID: 931 Comm: modprobe Not tainted 6.12.0-rc5-virtme #1 [ 95.344891][ T931] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 95.345221][ T931] Call Trace: [ 95.345331][ T931] [ 95.345403][ T931] dump_stack_lvl+0x82/0xd0 [ 95.345546][ T931] print_circular_bug+0x2e2/0x4b0 [ 95.345686][ T931] check_noncircular+0x2f9/0x3e0 [ 95.345826][ T931] ? __pfx_check_noncircular+0x10/0x10 [ 95.345965][ T931] ? __kernel_text_address+0x12/0x40 [ 95.346106][ T931] ? unwind_get_return_address+0x5e/0xa0 [ 95.346247][ T931] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 95.346422][ T931] ? arch_stack_walk+0xa2/0xf0 [ 95.346565][ T931] check_prev_add+0x182/0xce0 [ 95.346714][ T931] ? __pfx_stack_trace_save+0x10/0x10 [ 95.346849][ T931] validate_chain+0x71d/0x9b0 [ 95.346988][ T931] ? __pfx_validate_chain+0x10/0x10 [ 95.347145][ T931] ? mark_lock+0x335/0x3e0 [ 95.347282][ T931] ? __pfx_validate_chain+0x10/0x10 [ 95.347421][ T931] __lock_acquire+0xb3f/0x1580 [ 95.347565][ T931] lock_sync+0xd7/0x180 [ 95.347670][ T931] ? __synchronize_srcu+0x21/0x2b0 [ 95.347807][ T931] __synchronize_srcu+0x9e/0x2b0 [ 95.347947][ T931] ? __pfx___synchronize_srcu+0x10/0x10 [ 95.348083][ T931] ? hlock_class+0x4e/0x130 [ 95.348228][ T931] ? mark_lock+0x38/0x3e0 [ 95.348335][ T931] ? kvm_clock_get_cycles+0x18/0x30 [ 95.348475][ T931] ? ktime_get_mono_fast_ns+0x84/0x360 [ 95.348619][ T931] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 95.348792][ T931] __rtnl_link_unregister+0x14a/0x380 [ 95.348931][ T931] ? mark_lock+0x38/0x3e0 [ 95.349037][ T931] ? __pfx___rtnl_link_unregister+0x10/0x10 [ 95.349211][ T931] ? mark_held_locks+0x9e/0xe0 [ 95.349350][ T931] rtnl_link_unregister+0x14c/0x1c0 [ 95.349487][ T931] ? __pfx_rtnl_link_unregister+0x10/0x10 [ 95.349624][ T931] ? __pfx_woken_wake_function+0x10/0x10 [ 95.349769][ T931] nsim_module_exit+0x10/0x1a [netdevsim] [ 95.349918][ T931] __do_sys_delete_module+0x2bd/0x470 [ 95.350056][ T931] ? __pfx___do_sys_delete_module+0x10/0x10 [ 95.350228][ T931] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 95.350401][ T931] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 95.350573][ T931] ? trace_rcu_segcb_stats+0x37/0x1e0 [ 95.350715][ T931] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 95.350889][ T931] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 95.351063][ T931] do_syscall_64+0xc1/0x1d0 [ 95.351208][ T931] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.351377][ T931] RIP: 0033:0x7f63515365ab [ 95.351522][ T931] 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 [ 95.352034][ T931] RSP: 002b:00007ffcfc1d4e18 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 95.352241][ T931] RAX: ffffffffffffffda RBX: 0000562608d30980 RCX: 00007f63515365ab [ 95.352447][ T931] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 0000562608d309e8 [ 95.352655][ T931] RBP: 0000562608d30980 R08: 0000000000000000 R09: 0000000000000000 [ 95.352861][ T931] R10: 00007f6351695ac0 R11: 0000000000000206 R12: 0000562608d309e8 [ 95.353071][ T931] R13: 0000000000000000 R14: 0000562608d309e8 R15: 00007ffcfc1d7148 [ 95.353279][ T931]