[ 115.425128][ T2048] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 115.490199][ T2055] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 115.503792][ T2051] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 115.606001][ T2053] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 121.203359][ T2063] devlink (2063) used greatest stack depth: 22704 bytes left [ 146.964729][ T2112] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 147.008804][ T2120] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 147.039941][ T2124] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 147.127722][ T2117] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 152.042943][ T2209] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 152.627192][ T2202] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 152.735209][ T2206] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 153.292918][ T2202] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 153.307255][ T2209] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 153.336334][ T2206] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 153.473894][ T2208] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 154.574030][ T2208] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 154.600366][ T2209] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 154.674795][ T2202] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 154.716118][ T2206] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 159.532474][ T2335] Failed to register fib notifier [ 160.061351][ T2208] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 160.072638][ T2209] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 160.101205][ T2202] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 160.169880][ T2206] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 174.312018][ T2583] netdevsim netdevsim10 eni10npf0vf0: renamed from eth0 [ 174.350365][ T2588] netdevsim netdevsim10 eni10npf0vf3: renamed from eth3 [ 174.419343][ T2584] netdevsim netdevsim10 eni10npf0vf1: renamed from eth1 [ 174.470752][ T2585] netdevsim netdevsim10 eni10npf0vf2: renamed from eth2 [ 185.018174][ T2719] [ 185.018274][ T2719] ====================================================== [ 185.018432][ T2719] WARNING: possible circular locking dependency detected [ 185.018614][ T2719] 6.12.0-rc5-virtme #1 Not tainted [ 185.018739][ T2719] ------------------------------------------------------ [ 185.018904][ T2719] modprobe/2719 is trying to acquire lock: [ 185.019062][ T2719] ffffffffc035b4e0 (&ops->srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x21/0x2b0 [ 185.019306][ T2719] [ 185.019306][ T2719] but task is already holding lock: [ 185.019497][ T2719] ffffffffad5d4908 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 185.019731][ T2719] [ 185.019731][ T2719] which lock already depends on the new lock. [ 185.019731][ T2719] [ 185.019976][ T2719] [ 185.019976][ T2719] the existing dependency chain (in reverse order) is: [ 185.020192][ T2719] [ 185.020192][ T2719] -> #1 (rtnl_mutex){+.+.}-{3:3}: [ 185.020387][ T2719] __lock_acquire+0xb3f/0x1580 [ 185.020521][ T2719] lock_acquire.part.0+0xeb/0x330 [ 185.020653][ T2719] __mutex_lock+0x149/0xac0 [ 185.020780][ T2719] rtnl_newlink+0x64f/0xa20 [ 185.020906][ T2719] rtnetlink_rcv_msg+0x712/0xc10 [ 185.021041][ T2719] netlink_rcv_skb+0x130/0x360 [ 185.021172][ T2719] netlink_unicast+0x44b/0x710 [ 185.021297][ T2719] netlink_sendmsg+0x723/0xbe0 [ 185.021426][ T2719] ____sys_sendmsg+0x7ac/0xa10 [ 185.021559][ T2719] ___sys_sendmsg+0xee/0x170 [ 185.021693][ T2719] __sys_sendmsg+0xcd/0x170 [ 185.021828][ T2719] do_syscall_64+0xc1/0x1d0 [ 185.021972][ T2719] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 185.022148][ T2719] [ 185.022148][ T2719] -> #0 (&ops->srcu){.+.+}-{0:0}: [ 185.022386][ T2719] check_prev_add+0x182/0xce0 [ 185.022522][ T2719] validate_chain+0x71d/0x9b0 [ 185.022654][ T2719] __lock_acquire+0xb3f/0x1580 [ 185.022791][ T2719] lock_sync+0xd7/0x180 [ 185.022920][ T2719] __synchronize_srcu+0x9e/0x2b0 [ 185.023044][ T2719] __rtnl_link_unregister+0x14a/0x380 [ 185.023203][ T2719] rtnl_link_unregister+0x14c/0x1c0 [ 185.023351][ T2719] nsim_module_exit+0x10/0x1a [netdevsim] [ 185.023530][ T2719] __do_sys_delete_module+0x2bd/0x470 [ 185.023688][ T2719] do_syscall_64+0xc1/0x1d0 [ 185.023815][ T2719] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 185.023982][ T2719] [ 185.023982][ T2719] other info that might help us debug this: [ 185.023982][ T2719] [ 185.024227][ T2719] Possible unsafe locking scenario: [ 185.024227][ T2719] [ 185.024421][ T2719] CPU0 CPU1 [ 185.024548][ T2719] ---- ---- [ 185.024676][ T2719] lock(rtnl_mutex); [ 185.024783][ T2719] lock(&ops->srcu); [ 185.024947][ T2719] lock(rtnl_mutex); [ 185.025107][ T2719] sync(&ops->srcu); [ 185.025211][ T2719] [ 185.025211][ T2719] *** DEADLOCK *** [ 185.025211][ T2719] [ 185.025391][ T2719] 2 locks held by modprobe/2719: [ 185.025520][ T2719] #0: ffffffffad5b8890 (pernet_ops_rwsem){++++}-{3:3}, at: rtnl_link_unregister+0xa6/0x1c0 [ 185.025808][ T2719] #1: ffffffffad5d4908 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 185.026031][ T2719] [ 185.026031][ T2719] stack backtrace: [ 185.026185][ T2719] CPU: 3 UID: 0 PID: 2719 Comm: modprobe Not tainted 6.12.0-rc5-virtme #1 [ 185.026384][ T2719] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 185.026672][ T2719] Call Trace: [ 185.026788][ T2719] [ 185.026855][ T2719] dump_stack_lvl+0x82/0xd0 [ 185.026987][ T2719] print_circular_bug+0x2e2/0x4b0 [ 185.027122][ T2719] check_noncircular+0x2f9/0x3e0 [ 185.027250][ T2719] ? __pfx_check_noncircular+0x10/0x10 [ 185.027376][ T2719] ? __kernel_text_address+0x12/0x40 [ 185.027508][ T2719] ? unwind_get_return_address+0x5e/0xa0 [ 185.027635][ T2719] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 185.027800][ T2719] ? arch_stack_walk+0xa2/0xf0 [ 185.027930][ T2719] check_prev_add+0x182/0xce0 [ 185.028057][ T2719] ? __pfx_stack_trace_save+0x10/0x10 [ 185.028183][ T2719] validate_chain+0x71d/0x9b0 [ 185.028312][ T2719] ? __pfx_validate_chain+0x10/0x10 [ 185.028436][ T2719] ? mark_lock+0x335/0x3e0 [ 185.028561][ T2719] ? __pfx_validate_chain+0x10/0x10 [ 185.028686][ T2719] __lock_acquire+0xb3f/0x1580 [ 185.028833][ T2719] lock_sync+0xd7/0x180 [ 185.028929][ T2719] ? __synchronize_srcu+0x21/0x2b0 [ 185.029054][ T2719] __synchronize_srcu+0x9e/0x2b0 [ 185.029180][ T2719] ? __pfx___synchronize_srcu+0x10/0x10 [ 185.029304][ T2719] ? hlock_class+0x4e/0x130 [ 185.029431][ T2719] ? mark_lock+0x38/0x3e0 [ 185.029527][ T2719] ? kvm_clock_get_cycles+0x18/0x30 [ 185.029654][ T2719] ? ktime_get_mono_fast_ns+0x84/0x360 [ 185.029785][ T2719] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 185.029944][ T2719] __rtnl_link_unregister+0x14a/0x380 [ 185.030069][ T2719] ? mark_lock+0x38/0x3e0 [ 185.030164][ T2719] ? __pfx___rtnl_link_unregister+0x10/0x10 [ 185.030323][ T2719] ? mark_held_locks+0x9e/0xe0 [ 185.030453][ T2719] rtnl_link_unregister+0x14c/0x1c0 [ 185.030578][ T2719] ? __pfx_rtnl_link_unregister+0x10/0x10 [ 185.030703][ T2719] ? __pfx_woken_wake_function+0x10/0x10 [ 185.030837][ T2719] nsim_module_exit+0x10/0x1a [netdevsim] [ 185.030974][ T2719] __do_sys_delete_module+0x2bd/0x470 [ 185.031101][ T2719] ? __pfx___do_sys_delete_module+0x10/0x10 [ 185.031255][ T2719] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 185.031414][ T2719] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 185.031571][ T2719] ? trace_rcu_segcb_stats+0x37/0x1e0 [ 185.031699][ T2719] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 185.031863][ T2719] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 185.032020][ T2719] do_syscall_64+0xc1/0x1d0 [ 185.032149][ T2719] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 185.032309][ T2719] RIP: 0033:0x7f55eb7f55ab [ 185.032451][ T2719] 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 [ 185.032901][ T2719] RSP: 002b:00007ffd0d9185d8 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 185.033091][ T2719] RAX: ffffffffffffffda RBX: 000055d71272b980 RCX: 00007f55eb7f55ab [ 185.033291][ T2719] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055d71272b9e8 [ 185.033482][ T2719] RBP: 000055d71272b980 R08: 0000000000000000 R09: 0000000000000000 [ 185.033675][ T2719] R10: 00007f55eb954ac0 R11: 0000000000000206 R12: 000055d71272b9e8 [ 185.033867][ T2719] R13: 0000000000000000 R14: 000055d71272b9e8 R15: 00007ffd0d91a908 [ 185.034061][ T2719]