[ 25.336208][ T264] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 25.340732][ T260] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 25.384022][ T267] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 25.462603][ T259] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 31.160065][ T273] devlink (273) used greatest stack depth: 22544 bytes left [ 56.631506][ T331] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 56.652964][ T333] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 56.728580][ T324] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 56.842062][ T328] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 61.051817][ T420] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 61.448912][ T416] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 61.607926][ T418] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 61.625947][ T411] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 62.106467][ T418] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 62.122581][ T423] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 62.148123][ T420] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 62.220499][ T421] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 63.363223][ T418] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 63.394326][ T420] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 63.463911][ T423] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 63.504913][ T416] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 67.997499][ T544] Failed to register fib notifier [ 68.457714][ T411] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 68.487408][ T418] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 68.509316][ T420] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 68.623103][ T416] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 81.763532][ T792] netdevsim netdevsim10 eni10npf0vf0: renamed from eth0 [ 81.794523][ T795] netdevsim netdevsim10 eni10npf0vf2: renamed from eth2 [ 81.799257][ T796] netdevsim netdevsim10 eni10npf0vf3: renamed from eth3 [ 81.878936][ T793] netdevsim netdevsim10 eni10npf0vf1: renamed from eth1 [ 91.858001][ T925] [ 91.858090][ T925] ====================================================== [ 91.858244][ T925] WARNING: possible circular locking dependency detected [ 91.858399][ T925] 6.12.0-rc5-virtme #1 Not tainted [ 91.858524][ T925] ------------------------------------------------------ [ 91.858679][ T925] modprobe/925 is trying to acquire lock: [ 91.858807][ T925] ffffffffc04fc420 (&ops->srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x21/0x2b0 [ 91.859046][ T925] [ 91.859046][ T925] but task is already holding lock: [ 91.859225][ T925] ffffffffa45d3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 91.859445][ T925] [ 91.859445][ T925] which lock already depends on the new lock. [ 91.859445][ T925] [ 91.859681][ T925] [ 91.859681][ T925] the existing dependency chain (in reverse order) is: [ 91.859889][ T925] [ 91.859889][ T925] -> #1 (rtnl_mutex){+.+.}-{3:3}: [ 91.860071][ T925] __lock_acquire+0xb3f/0x1580 [ 91.860201][ T925] lock_acquire.part.0+0xeb/0x330 [ 91.860342][ T925] __mutex_lock+0x149/0xac0 [ 91.860467][ T925] rtnl_newlink+0x64b/0xa30 [ 91.860590][ T925] rtnetlink_rcv_msg+0x712/0xc10 [ 91.860716][ T925] netlink_rcv_skb+0x130/0x360 [ 91.860841][ T925] netlink_unicast+0x44b/0x710 [ 91.860964][ T925] netlink_sendmsg+0x723/0xbe0 [ 91.861088][ T925] ____sys_sendmsg+0x7ac/0xa10 [ 91.861213][ T925] ___sys_sendmsg+0xee/0x170 [ 91.861338][ T925] __sys_sendmsg+0xcd/0x170 [ 91.861465][ T925] do_syscall_64+0xc1/0x1d0 [ 91.861597][ T925] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.861752][ T925] [ 91.861752][ T925] -> #0 (&ops->srcu){.+.+}-{0:0}: [ 91.861940][ T925] check_prev_add+0x182/0xce0 [ 91.862076][ T925] validate_chain+0x71d/0x9b0 [ 91.862197][ T925] __lock_acquire+0xb3f/0x1580 [ 91.862321][ T925] lock_sync+0xd7/0x180 [ 91.862464][ T925] __synchronize_srcu+0x9e/0x2b0 [ 91.862588][ T925] __rtnl_link_unregister+0x14a/0x380 [ 91.862755][ T925] rtnl_link_unregister+0x14c/0x1c0 [ 91.862877][ T925] nsim_module_exit+0x10/0x1a [netdevsim] [ 91.863041][ T925] __do_sys_delete_module+0x2bd/0x470 [ 91.863193][ T925] do_syscall_64+0xc1/0x1d0 [ 91.863315][ T925] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.863467][ T925] [ 91.863467][ T925] other info that might help us debug this: [ 91.863467][ T925] [ 91.863697][ T925] Possible unsafe locking scenario: [ 91.863697][ T925] [ 91.863876][ T925] CPU0 CPU1 [ 91.863997][ T925] ---- ---- [ 91.864118][ T925] lock(rtnl_mutex); [ 91.864211][ T925] lock(&ops->srcu); [ 91.864364][ T925] lock(rtnl_mutex); [ 91.864515][ T925] sync(&ops->srcu); [ 91.864607][ T925] [ 91.864607][ T925] *** DEADLOCK *** [ 91.864607][ T925] [ 91.864780][ T925] 2 locks held by modprobe/925: [ 91.864903][ T925] #0: ffffffffa45b8650 (pernet_ops_rwsem){++++}-{3:3}, at: rtnl_link_unregister+0xa6/0x1c0 [ 91.865183][ T925] #1: ffffffffa45d3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 91.865409][ T925] [ 91.865409][ T925] stack backtrace: [ 91.865563][ T925] CPU: 3 UID: 0 PID: 925 Comm: modprobe Not tainted 6.12.0-rc5-virtme #1 [ 91.865758][ T925] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 91.866040][ T925] Call Trace: [ 91.866143][ T925] [ 91.866207][ T925] dump_stack_lvl+0x82/0xd0 [ 91.866333][ T925] print_circular_bug+0x2e2/0x4b0 [ 91.866454][ T925] check_noncircular+0x2f9/0x3e0 [ 91.866577][ T925] ? __pfx_check_noncircular+0x10/0x10 [ 91.866702][ T925] ? __kernel_text_address+0x12/0x40 [ 91.866825][ T925] ? unwind_get_return_address+0x5e/0xa0 [ 91.866949][ T925] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 91.867101][ T925] ? arch_stack_walk+0xa2/0xf0 [ 91.867226][ T925] check_prev_add+0x182/0xce0 [ 91.867347][ T925] ? __pfx_stack_trace_save+0x10/0x10 [ 91.867470][ T925] validate_chain+0x71d/0x9b0 [ 91.867591][ T925] ? __pfx_validate_chain+0x10/0x10 [ 91.867715][ T925] ? mark_lock+0x335/0x3e0 [ 91.867862][ T925] ? __pfx_validate_chain+0x10/0x10 [ 91.867987][ T925] __lock_acquire+0xb3f/0x1580 [ 91.868115][ T925] lock_sync+0xd7/0x180 [ 91.868210][ T925] ? __synchronize_srcu+0x21/0x2b0 [ 91.868335][ T925] __synchronize_srcu+0x9e/0x2b0 [ 91.868459][ T925] ? __pfx___synchronize_srcu+0x10/0x10 [ 91.868582][ T925] ? hlock_class+0x4e/0x130 [ 91.868711][ T925] ? mark_lock+0x38/0x3e0 [ 91.868806][ T925] ? kvm_clock_get_cycles+0x18/0x30 [ 91.868932][ T925] ? ktime_get_mono_fast_ns+0x84/0x360 [ 91.869058][ T925] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 91.869214][ T925] __rtnl_link_unregister+0x14a/0x380 [ 91.869340][ T925] ? mark_lock+0x38/0x3e0 [ 91.869434][ T925] ? __pfx___rtnl_link_unregister+0x10/0x10 [ 91.869587][ T925] ? mark_held_locks+0x9e/0xe0 [ 91.869715][ T925] rtnl_link_unregister+0x14c/0x1c0 [ 91.869840][ T925] ? __pfx_rtnl_link_unregister+0x10/0x10 [ 91.869965][ T925] ? __pfx_woken_wake_function+0x10/0x10 [ 91.870100][ T925] nsim_module_exit+0x10/0x1a [netdevsim] [ 91.870230][ T925] __do_sys_delete_module+0x2bd/0x470 [ 91.870353][ T925] ? __pfx___do_sys_delete_module+0x10/0x10 [ 91.870501][ T925] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 91.870656][ T925] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 91.870825][ T925] ? trace_rcu_segcb_stats+0x37/0x1e0 [ 91.870953][ T925] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 91.871106][ T925] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 91.871262][ T925] do_syscall_64+0xc1/0x1d0 [ 91.871388][ T925] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.871541][ T925] RIP: 0033:0x7f9306fb45ab [ 91.871673][ T925] 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 [ 91.872117][ T925] RSP: 002b:00007fff19a4e6d8 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 91.872300][ T925] RAX: ffffffffffffffda RBX: 0000559a2a23d980 RCX: 00007f9306fb45ab [ 91.872484][ T925] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 0000559a2a23d9e8 [ 91.872666][ T925] RBP: 0000559a2a23d980 R08: 0000000000000000 R09: 0000000000000000 [ 91.872874][ T925] R10: 00007f9307113ac0 R11: 0000000000000206 R12: 0000559a2a23d9e8 [ 91.873060][ T925] R13: 0000000000000000 R14: 0000559a2a23d9e8 R15: 00007fff19a50a08 [ 91.873250][ T925]