[ 110.068685][ T2048] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 110.146020][ T2054] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 110.218645][ T2058] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 110.278190][ T2051] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 116.025606][ T2063] devlink (2063) used greatest stack depth: 21824 bytes left [ 141.981488][ T2117] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 141.992321][ T2120] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 142.080652][ T2114] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 142.196212][ T2121] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 146.495537][ T2208] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 146.932374][ T2208] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 147.040292][ T2206] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 147.057970][ T2211] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 147.487661][ T2211] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 147.590614][ T2206] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 147.711097][ T2212] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 147.811959][ T2208] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 148.815316][ T2208] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 148.846901][ T2210] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 148.867456][ T2212] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 148.976647][ T2211] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 153.665845][ T2332] Failed to register fib notifier [ 154.132271][ T2211] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 154.194548][ T2206] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 154.203358][ T2212] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 154.240833][ T2208] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 168.049343][ T2580] netdevsim netdevsim10 eni10npf0vf0: renamed from eth0 [ 168.095344][ T2581] netdevsim netdevsim10 eni10npf0vf1: renamed from eth1 [ 168.119923][ T2583] netdevsim netdevsim10 eni10npf0vf2: renamed from eth2 [ 168.200415][ T2585] netdevsim netdevsim10 eni10npf0vf3: renamed from eth3 [ 178.352387][ T2712] [ 178.352482][ T2712] ====================================================== [ 178.352642][ T2712] WARNING: possible circular locking dependency detected [ 178.352799][ T2712] 6.12.0-rc5-virtme #1 Not tainted [ 178.352925][ T2712] ------------------------------------------------------ [ 178.353080][ T2712] modprobe/2712 is trying to acquire lock: [ 178.353236][ T2712] ffffffffc0567420 (&ops->srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x21/0x2b0 [ 178.353473][ T2712] [ 178.353473][ T2712] but task is already holding lock: [ 178.353659][ T2712] ffffffffaa5d3a88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 178.353883][ T2712] [ 178.353883][ T2712] which lock already depends on the new lock. [ 178.353883][ T2712] [ 178.354130][ T2712] [ 178.354130][ T2712] the existing dependency chain (in reverse order) is: [ 178.354349][ T2712] [ 178.354349][ T2712] -> #1 (rtnl_mutex){+.+.}-{3:3}: [ 178.354541][ T2712] __lock_acquire+0xb3f/0x1580 [ 178.354671][ T2712] lock_acquire.part.0+0xeb/0x330 [ 178.354796][ T2712] __mutex_lock+0x149/0xac0 [ 178.354938][ T2712] rtnl_newlink+0x64b/0xa30 [ 178.355068][ T2712] rtnetlink_rcv_msg+0x712/0xc10 [ 178.355192][ T2712] netlink_rcv_skb+0x130/0x360 [ 178.355319][ T2712] netlink_unicast+0x44b/0x710 [ 178.355446][ T2712] netlink_sendmsg+0x723/0xbe0 [ 178.355572][ T2712] ____sys_sendmsg+0x7ac/0xa10 [ 178.355700][ T2712] ___sys_sendmsg+0xee/0x170 [ 178.355827][ T2712] __sys_sendmsg+0xcd/0x170 [ 178.355951][ T2712] do_syscall_64+0xc1/0x1d0 [ 178.356076][ T2712] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 178.356236][ T2712] [ 178.356236][ T2712] -> #0 (&ops->srcu){.+.+}-{0:0}: [ 178.356424][ T2712] check_prev_add+0x182/0xce0 [ 178.356552][ T2712] validate_chain+0x71d/0x9b0 [ 178.356679][ T2712] __lock_acquire+0xb3f/0x1580 [ 178.356806][ T2712] lock_sync+0xd7/0x180 [ 178.356932][ T2712] __synchronize_srcu+0x9e/0x2b0 [ 178.357060][ T2712] __rtnl_link_unregister+0x14a/0x380 [ 178.357220][ T2712] rtnl_link_unregister+0x14c/0x1c0 [ 178.357346][ T2712] nsim_module_exit+0x10/0x1a [netdevsim] [ 178.357522][ T2712] __do_sys_delete_module+0x2bd/0x470 [ 178.357679][ T2712] do_syscall_64+0xc1/0x1d0 [ 178.357804][ T2712] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 178.357958][ T2712] [ 178.357958][ T2712] other info that might help us debug this: [ 178.357958][ T2712] [ 178.358199][ T2712] Possible unsafe locking scenario: [ 178.358199][ T2712] [ 178.358383][ T2712] CPU0 CPU1 [ 178.358505][ T2712] ---- ---- [ 178.358632][ T2712] lock(rtnl_mutex); [ 178.358728][ T2712] lock(&ops->srcu); [ 178.358884][ T2712] lock(rtnl_mutex); [ 178.359037][ T2712] sync(&ops->srcu); [ 178.359133][ T2712] [ 178.359133][ T2712] *** DEADLOCK *** [ 178.359133][ T2712] [ 178.359317][ T2712] 2 locks held by modprobe/2712: [ 178.359443][ T2712] #0: ffffffffaa5b8790 (pernet_ops_rwsem){++++}-{3:3}, at: rtnl_link_unregister+0xa6/0x1c0 [ 178.359699][ T2712] #1: ffffffffaa5d3a88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 178.359930][ T2712] [ 178.359930][ T2712] stack backtrace: [ 178.360081][ T2712] CPU: 1 UID: 0 PID: 2712 Comm: modprobe Not tainted 6.12.0-rc5-virtme #1 [ 178.360266][ T2712] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 178.360540][ T2712] Call Trace: [ 178.360639][ T2712] [ 178.360705][ T2712] dump_stack_lvl+0x82/0xd0 [ 178.360849][ T2712] print_circular_bug+0x2e2/0x4b0 [ 178.360978][ T2712] check_noncircular+0x2f9/0x3e0 [ 178.361105][ T2712] ? __pfx_check_noncircular+0x10/0x10 [ 178.361232][ T2712] ? __kernel_text_address+0x12/0x40 [ 178.361360][ T2712] ? unwind_get_return_address+0x5e/0xa0 [ 178.361488][ T2712] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 178.361644][ T2712] ? arch_stack_walk+0xa2/0xf0 [ 178.361774][ T2712] check_prev_add+0x182/0xce0 [ 178.361904][ T2712] ? __pfx_stack_trace_save+0x10/0x10 [ 178.362032][ T2712] validate_chain+0x71d/0x9b0 [ 178.362158][ T2712] ? __pfx_validate_chain+0x10/0x10 [ 178.362282][ T2712] ? mark_lock+0x335/0x3e0 [ 178.362408][ T2712] ? __pfx_validate_chain+0x10/0x10 [ 178.362534][ T2712] __lock_acquire+0xb3f/0x1580 [ 178.362665][ T2712] lock_sync+0xd7/0x180 [ 178.362762][ T2712] ? __synchronize_srcu+0x21/0x2b0 [ 178.362891][ T2712] __synchronize_srcu+0x9e/0x2b0 [ 178.363016][ T2712] ? __pfx___synchronize_srcu+0x10/0x10 [ 178.363141][ T2712] ? hlock_class+0x4e/0x130 [ 178.363265][ T2712] ? mark_lock+0x38/0x3e0 [ 178.363362][ T2712] ? kvm_clock_get_cycles+0x18/0x30 [ 178.363487][ T2712] ? ktime_get_mono_fast_ns+0x84/0x360 [ 178.363614][ T2712] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 178.363771][ T2712] __rtnl_link_unregister+0x14a/0x380 [ 178.363899][ T2712] ? mark_lock+0x38/0x3e0 [ 178.363992][ T2712] ? __pfx___rtnl_link_unregister+0x10/0x10 [ 178.364143][ T2712] ? mark_held_locks+0x9e/0xe0 [ 178.364271][ T2712] rtnl_link_unregister+0x14c/0x1c0 [ 178.364395][ T2712] ? __pfx_rtnl_link_unregister+0x10/0x10 [ 178.364519][ T2712] ? __pfx_woken_wake_function+0x10/0x10 [ 178.364648][ T2712] nsim_module_exit+0x10/0x1a [netdevsim] [ 178.364784][ T2712] __do_sys_delete_module+0x2bd/0x470 [ 178.364918][ T2712] ? __pfx___do_sys_delete_module+0x10/0x10 [ 178.365070][ T2712] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 178.365226][ T2712] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 178.365380][ T2712] ? trace_rcu_segcb_stats+0x37/0x1e0 [ 178.365506][ T2712] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 178.365658][ T2712] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 178.365817][ T2712] do_syscall_64+0xc1/0x1d0 [ 178.365943][ T2712] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 178.366097][ T2712] RIP: 0033:0x7f88196b95ab [ 178.366229][ T2712] 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 [ 178.366666][ T2712] RSP: 002b:00007fff0fab4498 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 178.366859][ T2712] RAX: ffffffffffffffda RBX: 0000564d4df31980 RCX: 00007f88196b95ab [ 178.367045][ T2712] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 0000564d4df319e8 [ 178.367233][ T2712] RBP: 0000564d4df31980 R08: 0000000000000000 R09: 0000000000000000 [ 178.367422][ T2712] R10: 00007f8819818ac0 R11: 0000000000000206 R12: 0000564d4df319e8 [ 178.367607][ T2712] R13: 0000000000000000 R14: 0000564d4df319e8 R15: 00007fff0fab67c8 [ 178.367800][ T2712]