[ 109.676961][ T2048] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 109.740515][ T2051] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 109.826442][ T2057] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 109.845363][ T2053] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 115.522814][ T2064] devlink (2064) used greatest stack depth: 22800 bytes left [ 141.019217][ T2120] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 141.033038][ T2121] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 141.138821][ T2116] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 141.151778][ T2119] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 145.629457][ T2210] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 145.653429][ T2208] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 145.669949][ T2205] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 146.134806][ T2200] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 146.206117][ T2211] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 146.227776][ T2203] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 146.250705][ T2201] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 146.640245][ T2201] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 146.672403][ T2203] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 146.695950][ T2210] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 146.715702][ T2208] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 148.200619][ T2201] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 148.214948][ T2211] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 148.305920][ T2210] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 148.433145][ T2203] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 152.754409][ T2334] Failed to register fib notifier [ 153.257009][ T2201] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 153.297107][ T2203] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 153.307473][ T2210] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 153.412424][ T2200] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 167.189539][ T2583] netdevsim netdevsim10 eni10npf0vf0: renamed from eth0 [ 167.285054][ T2587] netdevsim netdevsim10 eni10npf0vf2: renamed from eth2 [ 167.397678][ T2585] netdevsim netdevsim10 eni10npf0vf1: renamed from eth1 [ 167.537625][ T2588] netdevsim netdevsim10 eni10npf0vf3: renamed from eth3 [ 177.910490][ T2720] [ 177.910596][ T2720] ====================================================== [ 177.910764][ T2720] WARNING: possible circular locking dependency detected [ 177.910921][ T2720] 6.12.0-rc5-virtme #1 Not tainted [ 177.911047][ T2720] ------------------------------------------------------ [ 177.911204][ T2720] modprobe/2720 is trying to acquire lock: [ 177.911362][ T2720] ffffffffc048a420 (&ops->srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x21/0x2b0 [ 177.911597][ T2720] [ 177.911597][ T2720] but task is already holding lock: [ 177.911783][ T2720] ffffffffb6bd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 177.912012][ T2720] [ 177.912012][ T2720] which lock already depends on the new lock. [ 177.912012][ T2720] [ 177.912262][ T2720] [ 177.912262][ T2720] the existing dependency chain (in reverse order) is: [ 177.912476][ T2720] [ 177.912476][ T2720] -> #1 (rtnl_mutex){+.+.}-{3:3}: [ 177.912664][ T2720] __lock_acquire+0xb3f/0x1580 [ 177.912798][ T2720] lock_acquire.part.0+0xeb/0x330 [ 177.912927][ T2720] __mutex_lock+0x149/0xac0 [ 177.913061][ T2720] rtnl_newlink+0x64b/0xa30 [ 177.913188][ T2720] rtnetlink_rcv_msg+0x712/0xc10 [ 177.913316][ T2720] netlink_rcv_skb+0x130/0x360 [ 177.913444][ T2720] netlink_unicast+0x44b/0x710 [ 177.913572][ T2720] netlink_sendmsg+0x723/0xbe0 [ 177.913697][ T2720] ____sys_sendmsg+0x7ac/0xa10 [ 177.913827][ T2720] ___sys_sendmsg+0xee/0x170 [ 177.913957][ T2720] __sys_sendmsg+0xcd/0x170 [ 177.914087][ T2720] do_syscall_64+0xc1/0x1d0 [ 177.914220][ T2720] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 177.914384][ T2720] [ 177.914384][ T2720] -> #0 (&ops->srcu){.+.+}-{0:0}: [ 177.914577][ T2720] check_prev_add+0x182/0xce0 [ 177.914712][ T2720] validate_chain+0x71d/0x9b0 [ 177.914839][ T2720] __lock_acquire+0xb3f/0x1580 [ 177.914966][ T2720] lock_sync+0xd7/0x180 [ 177.915103][ T2720] __synchronize_srcu+0x9e/0x2b0 [ 177.915245][ T2720] __rtnl_link_unregister+0x14a/0x380 [ 177.915406][ T2720] rtnl_link_unregister+0x14c/0x1c0 [ 177.915533][ T2720] nsim_module_exit+0x10/0x1a [netdevsim] [ 177.915705][ T2720] __do_sys_delete_module+0x2bd/0x470 [ 177.915869][ T2720] do_syscall_64+0xc1/0x1d0 [ 177.915999][ T2720] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 177.916159][ T2720] [ 177.916159][ T2720] other info that might help us debug this: [ 177.916159][ T2720] [ 177.916412][ T2720] Possible unsafe locking scenario: [ 177.916412][ T2720] [ 177.916605][ T2720] CPU0 CPU1 [ 177.916730][ T2720] ---- ---- [ 177.916856][ T2720] lock(rtnl_mutex); [ 177.916956][ T2720] lock(&ops->srcu); [ 177.917114][ T2720] lock(rtnl_mutex); [ 177.917269][ T2720] sync(&ops->srcu); [ 177.917368][ T2720] [ 177.917368][ T2720] *** DEADLOCK *** [ 177.917368][ T2720] [ 177.917582][ T2720] 2 locks held by modprobe/2720: [ 177.917708][ T2720] #0: ffffffffb6bb8650 (pernet_ops_rwsem){++++}-{3:3}, at: rtnl_link_unregister+0xa6/0x1c0 [ 177.917970][ T2720] #1: ffffffffb6bd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_link_unregister+0x10c/0x1c0 [ 177.918193][ T2720] [ 177.918193][ T2720] stack backtrace: [ 177.918348][ T2720] CPU: 3 UID: 0 PID: 2720 Comm: modprobe Not tainted 6.12.0-rc5-virtme #1 [ 177.918544][ T2720] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 177.918821][ T2720] Call Trace: [ 177.918922][ T2720] [ 177.918989][ T2720] dump_stack_lvl+0x82/0xd0 [ 177.919121][ T2720] print_circular_bug+0x2e2/0x4b0 [ 177.919249][ T2720] check_noncircular+0x2f9/0x3e0 [ 177.919376][ T2720] ? __pfx_check_noncircular+0x10/0x10 [ 177.919508][ T2720] ? __kernel_text_address+0x12/0x40 [ 177.919638][ T2720] ? unwind_get_return_address+0x5e/0xa0 [ 177.919769][ T2720] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 177.919929][ T2720] ? arch_stack_walk+0xa2/0xf0 [ 177.920058][ T2720] check_prev_add+0x182/0xce0 [ 177.920196][ T2720] ? __pfx_stack_trace_save+0x10/0x10 [ 177.920324][ T2720] validate_chain+0x71d/0x9b0 [ 177.920451][ T2720] ? __pfx_validate_chain+0x10/0x10 [ 177.920580][ T2720] ? mark_lock+0x335/0x3e0 [ 177.920713][ T2720] ? __pfx_validate_chain+0x10/0x10 [ 177.920839][ T2720] __lock_acquire+0xb3f/0x1580 [ 177.920970][ T2720] lock_sync+0xd7/0x180 [ 177.921067][ T2720] ? __synchronize_srcu+0x21/0x2b0 [ 177.921194][ T2720] __synchronize_srcu+0x9e/0x2b0 [ 177.921324][ T2720] ? __pfx___synchronize_srcu+0x10/0x10 [ 177.921450][ T2720] ? hlock_class+0x4e/0x130 [ 177.921583][ T2720] ? mark_lock+0x38/0x3e0 [ 177.921678][ T2720] ? kvm_clock_get_cycles+0x18/0x30 [ 177.921806][ T2720] ? ktime_get_mono_fast_ns+0x84/0x360 [ 177.921933][ T2720] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 177.922090][ T2720] __rtnl_link_unregister+0x14a/0x380 [ 177.922224][ T2720] ? mark_lock+0x38/0x3e0 [ 177.922319][ T2720] ? __pfx___rtnl_link_unregister+0x10/0x10 [ 177.922481][ T2720] ? mark_held_locks+0x9e/0xe0 [ 177.922614][ T2720] rtnl_link_unregister+0x14c/0x1c0 [ 177.922740][ T2720] ? __pfx_rtnl_link_unregister+0x10/0x10 [ 177.922867][ T2720] ? __pfx_woken_wake_function+0x10/0x10 [ 177.922998][ T2720] nsim_module_exit+0x10/0x1a [netdevsim] [ 177.923134][ T2720] __do_sys_delete_module+0x2bd/0x470 [ 177.923262][ T2720] ? __pfx___do_sys_delete_module+0x10/0x10 [ 177.923417][ T2720] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 177.923588][ T2720] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 177.923745][ T2720] ? trace_rcu_segcb_stats+0x37/0x1e0 [ 177.923872][ T2720] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 177.924030][ T2720] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 177.924187][ T2720] do_syscall_64+0xc1/0x1d0 [ 177.924315][ T2720] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 177.924471][ T2720] RIP: 0033:0x7f6699c205ab [ 177.924613][ T2720] 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 [ 177.925054][ T2720] RSP: 002b:00007ffe7a9e39e8 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 177.925255][ T2720] RAX: ffffffffffffffda RBX: 000055a3edc60980 RCX: 00007f6699c205ab [ 177.925447][ T2720] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055a3edc609e8 [ 177.925641][ T2720] RBP: 000055a3edc60980 R08: 0000000000000000 R09: 0000000000000000 [ 177.925828][ T2720] R10: 00007f6699d7fac0 R11: 0000000000000206 R12: 000055a3edc609e8 [ 177.926017][ T2720] R13: 0000000000000000 R14: 000055a3edc609e8 R15: 00007ffe7a9e5d18 [ 177.926210][ T2720]