[ 111.629700][ T2047] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 111.679526][ T2050] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 111.772944][ T2053] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 111.806700][ T2055] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 117.593462][ T2063] devlink (2063) used greatest stack depth: 22800 bytes left [ 123.364960][ T2065] devlink (2065) used greatest stack depth: 22512 bytes left [ 143.367946][ T2114] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 143.388259][ T2119] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 143.402644][ T2117] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 143.418739][ T2121] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 148.454357][ T2206] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 148.477549][ T2205] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 148.848045][ T2206] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 148.885418][ T2205] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 148.953232][ T2209] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 149.013354][ T2207] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 150.438717][ T2207] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 150.457488][ T2205] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 150.473310][ T2208] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 150.572602][ T2209] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 155.110499][ T2330] Failed to register fib notifier [ 155.572514][ T2205] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 155.576642][ T2206] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 155.604885][ T2207] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 155.653004][ T2209] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 169.745504][ T2580] netdevsim netdevsim10 eni10npf0vf1: renamed from eth1 [ 169.788895][ T2582] netdevsim netdevsim10 eni10npf0vf2: renamed from eth2 [ 169.839592][ T2578] netdevsim netdevsim10 eni10npf0vf0: renamed from eth0 [ 169.894486][ T2583] netdevsim netdevsim10 eni10npf0vf3: renamed from eth3 [ 180.194019][ T2711] [ 180.194197][ T2711] ====================================================== [ 180.194396][ T2711] WARNING: possible circular locking dependency detected [ 180.194600][ T2711] 6.12.0-rc5-virtme #1 Not tainted [ 180.194757][ T2711] ------------------------------------------------------ [ 180.194968][ T2711] modprobe/2711 is trying to acquire lock: [ 180.195170][ T2711] ffffffffc059f420 (&ops->srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x21/0x2b0 [ 180.195455][ T2711] [ 180.195455][ T2711] but task is already holding lock: [ 180.195686][ T2711] ffffffff9b9d3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 180.195977][ T2711] [ 180.195977][ T2711] which lock already depends on the new lock. [ 180.195977][ T2711] [ 180.196266][ T2711] [ 180.196266][ T2711] the existing dependency chain (in reverse order) is: [ 180.196509][ T2711] [ 180.196509][ T2711] -> #1 (rtnl_mutex){+.+.}-{3:3}: [ 180.196723][ T2711] __lock_acquire+0xb3f/0x1580 [ 180.196873][ T2711] lock_acquire.part.0+0xeb/0x330 [ 180.197015][ T2711] __mutex_lock+0x149/0xac0 [ 180.197160][ T2711] rtnl_newlink+0x64b/0xa30 [ 180.197300][ T2711] rtnetlink_rcv_msg+0x712/0xc10 [ 180.197465][ T2711] netlink_rcv_skb+0x130/0x360 [ 180.197612][ T2711] netlink_unicast+0x44b/0x710 [ 180.197766][ T2711] netlink_sendmsg+0x723/0xbe0 [ 180.197906][ T2711] ____sys_sendmsg+0x7ac/0xa10 [ 180.198050][ T2711] ___sys_sendmsg+0xee/0x170 [ 180.198224][ T2711] __sys_sendmsg+0xcd/0x170 [ 180.198366][ T2711] do_syscall_64+0xc1/0x1d0 [ 180.198533][ T2711] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 180.198718][ T2711] [ 180.198718][ T2711] -> #0 (&ops->srcu){.+.+}-{0:0}: [ 180.198947][ T2711] check_prev_add+0x182/0xce0 [ 180.199104][ T2711] validate_chain+0x71d/0x9b0 [ 180.199266][ T2711] __lock_acquire+0xb3f/0x1580 [ 180.199406][ T2711] lock_sync+0xd7/0x180 [ 180.199571][ T2711] __synchronize_srcu+0x9e/0x2b0 [ 180.199728][ T2711] __rtnl_link_unregister+0x14a/0x380 [ 180.199922][ T2711] rtnl_link_unregister+0x14c/0x1c0 [ 180.200085][ T2711] nsim_module_exit+0x10/0x1a [netdevsim] [ 180.200312][ T2711] __do_sys_delete_module+0x2bd/0x470 [ 180.200493][ T2711] do_syscall_64+0xc1/0x1d0 [ 180.200669][ T2711] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 180.200865][ T2711] [ 180.200865][ T2711] other info that might help us debug this: [ 180.200865][ T2711] [ 180.201176][ T2711] Possible unsafe locking scenario: [ 180.201176][ T2711] [ 180.201416][ T2711] CPU0 CPU1 [ 180.201556][ T2711] ---- ---- [ 180.201701][ T2711] lock(rtnl_mutex); [ 180.201819][ T2711] lock(&ops->srcu); [ 180.202028][ T2711] lock(rtnl_mutex); [ 180.202206][ T2711] sync(&ops->srcu); [ 180.202342][ T2711] [ 180.202342][ T2711] *** DEADLOCK *** [ 180.202342][ T2711] [ 180.202558][ T2711] 2 locks held by modprobe/2711: [ 180.202731][ T2711] #0: ffffffff9b9b8650 (pernet_ops_rwsem){++++}-{3:3}, at: rtnl_link_unregister+0xa6/0x1c0 [ 180.203045][ T2711] #1: ffffffff9b9d3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 180.203315][ T2711] [ 180.203315][ T2711] stack backtrace: [ 180.203498][ T2711] CPU: 1 UID: 0 PID: 2711 Comm: modprobe Not tainted 6.12.0-rc5-virtme #1 [ 180.203754][ T2711] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 180.204066][ T2711] Call Trace: [ 180.204185][ T2711] [ 180.204261][ T2711] dump_stack_lvl+0x82/0xd0 [ 180.204413][ T2711] print_circular_bug+0x2e2/0x4b0 [ 180.204567][ T2711] check_noncircular+0x2f9/0x3e0 [ 180.204706][ T2711] ? __pfx_check_noncircular+0x10/0x10 [ 180.204853][ T2711] ? __kernel_text_address+0x12/0x40 [ 180.205003][ T2711] ? unwind_get_return_address+0x5e/0xa0 [ 180.205150][ T2711] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 180.205335][ T2711] ? arch_stack_walk+0xa2/0xf0 [ 180.205481][ T2711] check_prev_add+0x182/0xce0 [ 180.205620][ T2711] ? __pfx_stack_trace_save+0x10/0x10 [ 180.205760][ T2711] validate_chain+0x71d/0x9b0 [ 180.205906][ T2711] ? __pfx_validate_chain+0x10/0x10 [ 180.206046][ T2711] ? mark_lock+0x335/0x3e0 [ 180.206187][ T2711] ? __pfx_validate_chain+0x10/0x10 [ 180.206328][ T2711] __lock_acquire+0xb3f/0x1580 [ 180.206479][ T2711] lock_sync+0xd7/0x180 [ 180.206583][ T2711] ? __synchronize_srcu+0x21/0x2b0 [ 180.206723][ T2711] __synchronize_srcu+0x9e/0x2b0 [ 180.206863][ T2711] ? __pfx___synchronize_srcu+0x10/0x10 [ 180.207004][ T2711] ? hlock_class+0x4e/0x130 [ 180.207149][ T2711] ? mark_lock+0x38/0x3e0 [ 180.207261][ T2711] ? kvm_clock_get_cycles+0x18/0x30 [ 180.207403][ T2711] ? ktime_get_mono_fast_ns+0x84/0x360 [ 180.207549][ T2711] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 180.207740][ T2711] __rtnl_link_unregister+0x14a/0x380 [ 180.207892][ T2711] ? mark_lock+0x38/0x3e0 [ 180.207998][ T2711] ? __pfx___rtnl_link_unregister+0x10/0x10 [ 180.208168][ T2711] ? mark_held_locks+0x9e/0xe0 [ 180.208317][ T2711] rtnl_link_unregister+0x14c/0x1c0 [ 180.208460][ T2711] ? __pfx_rtnl_link_unregister+0x10/0x10 [ 180.208600][ T2711] ? __pfx_woken_wake_function+0x10/0x10 [ 180.208742][ T2711] nsim_module_exit+0x10/0x1a [netdevsim] [ 180.208898][ T2711] __do_sys_delete_module+0x2bd/0x470 [ 180.209040][ T2711] ? __pfx___do_sys_delete_module+0x10/0x10 [ 180.209212][ T2711] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 180.209394][ T2711] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 180.209572][ T2711] ? trace_rcu_segcb_stats+0x37/0x1e0 [ 180.209714][ T2711] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 180.209888][ T2711] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 180.210067][ T2711] do_syscall_64+0xc1/0x1d0 [ 180.210213][ T2711] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 180.210392][ T2711] RIP: 0033:0x7fc7c42965ab [ 180.210538][ T2711] 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 [ 180.211060][ T2711] RSP: 002b:00007ffff7bc37e8 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 180.211271][ T2711] RAX: ffffffffffffffda RBX: 0000557ffb4c2980 RCX: 00007fc7c42965ab [ 180.211518][ T2711] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 0000557ffb4c29e8 [ 180.211731][ T2711] RBP: 0000557ffb4c2980 R08: 0000000000000000 R09: 0000000000000000 [ 180.211970][ T2711] R10: 00007fc7c43f5ac0 R11: 0000000000000206 R12: 0000557ffb4c29e8 [ 180.212196][ T2711] R13: 0000000000000000 R14: 0000557ffb4c29e8 R15: 00007ffff7bc5b18 [ 180.212407][ T2711]