[ 33.576563][ C2] [ 33.576745][ C2] ======================================================== [ 33.576996][ C2] WARNING: possible irq lock inversion dependency detected [ 33.577244][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 33.577404][ C2] -------------------------------------------------------- [ 33.577641][ C2] ip/319 just changed the state of lock: [ 33.577799][ C2] ffff8880064fd580 (&ndev->lock){++-.}-{2:2}, at: addrconf_rs_timer+0xa9/0x730 [ 33.578090][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 33.578330][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 33.578334][ C2] [ 33.578334][ C2] [ 33.578334][ C2] and interrupts could create inverse lock ordering between them. [ 33.578334][ C2] [ 33.578920][ C2] [ 33.578920][ C2] other info that might help us debug this: [ 33.579193][ C2] Possible interrupt unsafe locking scenario: [ 33.579193][ C2] [ 33.579439][ C2] CPU0 CPU1 [ 33.579604][ C2] ---- ---- [ 33.579766][ C2] lock(&p->alloc_lock); [ 33.579893][ C2] local_irq_disable(); [ 33.580096][ C2] lock(&ndev->lock); [ 33.580307][ C2] lock(&p->alloc_lock); [ 33.580506][ C2] [ 33.580625][ C2] lock(&ndev->lock); [ 33.580750][ C2] [ 33.580750][ C2] *** DEADLOCK *** [ 33.580750][ C2] [ 33.580983][ C2] 2 locks held by ip/319: [ 33.581103][ C2] #0: ffffffff9c345f10 (remove_cache_srcu){.+.+}-{0:0}, at: kasan_quarantine_reduce+0x85/0x1e0 [ 33.581432][ C2] #1: ffffc90000230d68 ((&ndev->rs_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 33.581720][ C2] [ 33.581720][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 33.582000][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 33.582166][ C2] HARDIRQ-ON-W at: [ 33.582288][ C2] __lock_acquire+0x797/0x1570 [ 33.582493][ C2] lock_acquire.part.0+0xeb/0x330 [ 33.582695][ C2] _raw_spin_lock+0x30/0x40 [ 33.582899][ C2] set_mems_allowed+0x1d/0x210 [ 33.583106][ C2] kernel_init_freeable+0x72/0x310 [ 33.583310][ C2] kernel_init+0x20/0x200 [ 33.583511][ C2] ret_from_fork+0x31/0x70 [ 33.583715][ C2] ret_from_fork_asm+0x1a/0x30 [ 33.583916][ C2] SOFTIRQ-ON-W at: [ 33.584039][ C2] __lock_acquire+0x797/0x1570 [ 33.584242][ C2] lock_acquire.part.0+0xeb/0x330 [ 33.584443][ C2] _raw_spin_lock+0x30/0x40 [ 33.584646][ C2] set_mems_allowed+0x1d/0x210 [ 33.584846][ C2] kernel_init_freeable+0x72/0x310 [ 33.585046][ C2] kernel_init+0x20/0x200 [ 33.585245][ C2] ret_from_fork+0x31/0x70 [ 33.585450][ C2] ret_from_fork_asm+0x1a/0x30 [ 33.585672][ C2] INITIAL USE at: [ 33.585796][ C2] __lock_acquire+0x797/0x1570 [ 33.586002][ C2] lock_acquire.part.0+0xeb/0x330 [ 33.586209][ C2] _raw_spin_lock+0x30/0x40 [ 33.586414][ C2] set_mems_allowed+0x1d/0x210 [ 33.586621][ C2] kernel_init_freeable+0x72/0x310 [ 33.586841][ C2] kernel_init+0x20/0x200 [ 33.587040][ C2] ret_from_fork+0x31/0x70 [ 33.587242][ C2] ret_from_fork_asm+0x1a/0x30 [ 33.587445][ C2] } [ 33.587528][ C2] ... key at: [] __key.387+0x0/0x40 [ 33.587789][ C2] ... acquired at: [ 33.587913][ C2] __lock_acquire+0xaf0/0x1570 [ 33.588083][ C2] lock_acquire.part.0+0xeb/0x330 [ 33.588251][ C2] _raw_spin_lock+0x30/0x40 [ 33.588415][ C2] __get_task_comm+0x27/0x70 [ 33.588584][ C2] ref_tracker_alloc+0x2ee/0x490 [ 33.588750][ C2] netdev_get_by_index+0x5e/0x80 [ 33.588919][ C2] fib6_nh_init+0x3d8/0x15b0 [ 33.589095][ C2] ip6_route_info_create+0xf18/0x17d0 [ 33.589260][ C2] ip6_route_add+0x1c/0x140 [ 33.589427][ C2] addrconf_prefix_route+0x1cc/0x2b0 [ 33.589595][ C2] addrconf_permanent_addr+0x32f/0x670 [ 33.589760][ C2] addrconf_notify+0x749/0xd60 [ 33.589924][ C2] notifier_call_chain+0xcd/0x150 [ 33.590091][ C2] __dev_notify_flags+0xe6/0x250 [ 33.590259][ C2] dev_change_flags+0xec/0x160 [ 33.590436][ C2] do_setlink+0x7d6/0x21e0 [ 33.590601][ C2] __rtnl_newlink+0xaa7/0xd80 [ 33.590765][ C2] rtnl_newlink+0x63/0xa0 [ 33.590927][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 33.591090][ C2] netlink_rcv_skb+0x130/0x360 [ 33.591254][ C2] netlink_unicast+0x449/0x710 [ 33.591415][ C2] netlink_sendmsg+0x723/0xbe0 [ 33.591577][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 33.591741][ C2] ___sys_sendmsg+0xee/0x170 [ 33.591924][ C2] __sys_sendmsg+0xcd/0x170 [ 33.592090][ C2] do_syscall_64+0xc6/0x1e0 [ 33.592259][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 33.592468][ C2] [ 33.592551][ C2] -> (&ndev->lock){++-.}-{2:2} { [ 33.592720][ C2] HARDIRQ-ON-W at: [ 33.592844][ C2] __lock_acquire+0x797/0x1570 [ 33.593060][ C2] lock_acquire.part.0+0xeb/0x330 [ 33.593264][ C2] _raw_write_lock_bh+0x38/0x50 [ 33.593464][ C2] addrconf_permanent_addr+0x6e/0x670 [ 33.593669][ C2] addrconf_notify+0x749/0xd60 [ 33.593871][ C2] notifier_call_chain+0xcd/0x150 [ 33.594072][ C2] __dev_notify_flags+0xe6/0x250 [ 33.594273][ C2] dev_change_flags+0xec/0x160 [ 33.594473][ C2] do_setlink+0x7d6/0x21e0 [ 33.594676][ C2] __rtnl_newlink+0xaa7/0xd80 [ 33.594879][ C2] rtnl_newlink+0x63/0xa0 [ 33.595081][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 33.595283][ C2] netlink_rcv_skb+0x130/0x360 [ 33.595485][ C2] netlink_unicast+0x449/0x710 [ 33.595687][ C2] netlink_sendmsg+0x723/0xbe0 [ 33.595889][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 33.596092][ C2] ___sys_sendmsg+0xee/0x170 [ 33.596298][ C2] __sys_sendmsg+0xcd/0x170 [ 33.596500][ C2] do_syscall_64+0xc6/0x1e0 [ 33.596704][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 33.596946][ C2] HARDIRQ-ON-R at: [ 33.597067][ C2] __lock_acquire+0x797/0x1570 [ 33.597271][ C2] lock_acquire.part.0+0xeb/0x330 [ 33.597474][ C2] _raw_read_lock_bh+0x44/0x80 [ 33.597677][ C2] inet6_fill_ifla6_attrs+0x516/0x740 [ 33.597879][ C2] inet6_fill_link_af+0x5e/0xe0 [ 33.598080][ C2] rtnl_fill_ifinfo+0x1612/0x29e0 [ 33.598280][ C2] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 33.598480][ C2] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 33.598835][ C2] rtmsg_ifinfo+0x5b/0xa0 [ 33.599057][ C2] register_netdevice+0x1177/0x1690 [ 33.599263][ C2] register_netdev+0x20/0x40 [ 33.599469][ C2] sit_init_net+0x250/0x4f0 [ 33.599784][ C2] ops_init+0x9b/0x560 [ 33.599953][ C2] register_pernet_operations+0x2db/0x710 [ 33.600209][ C2] register_pernet_device+0x2a/0x60 [ 33.600519][ C2] sit_init+0x23/0xe0 [ 33.600682][ C2] do_one_initcall+0x8d/0x1e0 [ 33.600884][ C2] do_initcalls+0x1b2/0x3e0 [ 33.601084][ C2] kernel_init_freeable+0x232/0x310 [ 33.601389][ C2] kernel_init+0x20/0x200 [ 33.601590][ C2] ret_from_fork+0x31/0x70 [ 33.601795][ C2] ret_from_fork_asm+0x1a/0x30 [ 33.602102][ C2] IN-SOFTIRQ-W at: [ 33.602223][ C2] __lock_acquire+0x797/0x1570 [ 33.602424][ C2] lock_acquire.part.0+0xeb/0x330 [ 33.602624][ C2] _raw_write_lock+0x30/0x40 [ 33.602931][ C2] addrconf_rs_timer+0xa9/0x730 [ 33.603131][ C2] call_timer_fn+0x13b/0x230 [ 33.603334][ C2] __run_timers+0x545/0x810 [ 33.603641][ C2] run_timer_softirq+0xe8/0x1b0 [ 33.603842][ C2] __do_softirq+0x1f8/0x5df [ 33.604043][ C2] irq_exit_rcu+0x97/0xc0 [ 33.604244][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 33.604591][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 33.604834][ C2] unwind_get_return_address+0x13/0xa0 [ 33.605037][ C2] arch_stack_walk+0xa2/0xf0 [ 33.605345][ C2] stack_trace_save+0x94/0xd0 [ 33.605548][ C2] set_track_prepare+0x31/0x70 [ 33.605750][ C2] free_to_partial_list+0x1db/0x340 [ 33.606058][ C2] qlist_free_all+0x4c/0x140 [ 33.606259][ C2] kasan_quarantine_reduce+0x192/0x1e0 [ 33.606461][ C2] __kasan_slab_alloc+0x49/0x70 [ 33.606875][ C2] kmem_cache_alloc+0xef/0x270 [ 33.607076][ C2] __alloc_object+0x39/0x6f0 [ 33.607277][ C2] __create_object+0x22/0xb0 [ 33.607477][ C2] __kmalloc+0x2ce/0x3c0 [ 33.607783][ C2] p9_fcall_init+0x7d/0x1b0 [ 33.607987][ C2] p9_tag_alloc+0x138/0x700 [ 33.608188][ C2] p9_client_prepare_req+0xe6/0x290 [ 33.608494][ C2] p9_client_rpc+0x18d/0x930 [ 33.608696][ C2] p9_client_clunk+0x74/0xe0 [ 33.608897][ C2] v9fs_dentry_release+0xb9/0x140 [ 33.609127][ C2] __dentry_kill+0x1d9/0x4f0 [ 33.609443][ C2] dput.part.0+0x333/0x6c0 [ 33.609652][ C2] walk_component+0x199/0x4f0 [ 33.609861][ C2] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 33.610227][ C2] path_openat+0x1be/0x440 [ 33.610427][ C2] do_filp_open+0x1b3/0x3e0 [ 33.610629][ C2] do_sys_openat2+0x122/0x160 [ 33.610936][ C2] __x64_sys_openat+0x123/0x1e0 [ 33.611138][ C2] do_syscall_64+0xc6/0x1e0 [ 33.611341][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 33.611688][ C2] INITIAL USE at: [ 33.611809][ C2] __lock_acquire+0x797/0x1570 [ 33.612010][ C2] lock_acquire.part.0+0xeb/0x330 [ 33.612211][ C2] _raw_write_lock_bh+0x38/0x50 [ 33.612517][ C2] addrconf_permanent_addr+0x6e/0x670 [ 33.612718][ C2] addrconf_notify+0x749/0xd60 [ 33.612917][ C2] notifier_call_chain+0xcd/0x150 [ 33.613117][ C2] __dev_notify_flags+0xe6/0x250 [ 33.613423][ C2] dev_change_flags+0xec/0x160 [ 33.613623][ C2] do_setlink+0x7d6/0x21e0 [ 33.613824][ C2] __rtnl_newlink+0xaa7/0xd80 [ 33.614131][ C2] rtnl_newlink+0x63/0xa0 [ 33.614333][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 33.614533][ C2] netlink_rcv_skb+0x130/0x360 [ 33.614840][ C2] netlink_unicast+0x449/0x710 [ 33.615041][ C2] netlink_sendmsg+0x723/0xbe0 [ 33.615243][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 33.615443][ C2] ___sys_sendmsg+0xee/0x170 [ 33.615768][ C2] __sys_sendmsg+0xcd/0x170 [ 33.615973][ C2] do_syscall_64+0xc6/0x1e0 [ 33.616179][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 33.616533][ C2] INITIAL READ USE at: [ 33.616656][ C2] __lock_acquire+0x797/0x1570 [ 33.616861][ C2] lock_acquire.part.0+0xeb/0x330 [ 33.617077][ C2] _raw_read_lock_bh+0x44/0x80 [ 33.617384][ C2] inet6_fill_ifla6_attrs+0x516/0x740 [ 33.617624][ C2] inet6_fill_link_af+0x5e/0xe0 [ 33.617825][ C2] rtnl_fill_ifinfo+0x1612/0x29e0 [ 33.618132][ C2] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 33.618373][ C2] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 33.618644][ C2] rtmsg_ifinfo+0x5b/0xa0 [ 33.618959][ C2] register_netdevice+0x1177/0x1690 [ 33.619213][ C2] register_netdev+0x20/0x40 [ 33.619419][ C2] sit_init_net+0x250/0x4f0 [ 33.619845][ C2] ops_init+0x9b/0x560 [ 33.620052][ C2] register_pernet_operations+0x2db/0x710 [ 33.620300][ C2] register_pernet_device+0x2a/0x60 [ 33.620656][ C2] sit_init+0x23/0xe0 [ 33.620862][ C2] do_one_initcall+0x8d/0x1e0 [ 33.621069][ C2] do_initcalls+0x1b2/0x3e0 [ 33.621285][ C2] kernel_init_freeable+0x232/0x310 [ 33.621630][ C2] kernel_init+0x20/0x200 [ 33.621832][ C2] ret_from_fork+0x31/0x70 [ 33.622033][ C2] ret_from_fork_asm+0x1a/0x30 [ 33.622340][ C2] } [ 33.622421][ C2] ... key at: [] __key.36+0x0/0x40 [ 33.622662][ C2] ... acquired at: [ 33.622781][ C2] mark_lock+0x28d/0x3e0 [ 33.623047][ C2] mark_usage+0xd9/0x2a0 [ 33.623209][ C2] __lock_acquire+0x797/0x1570 [ 33.623370][ C2] lock_acquire.part.0+0xeb/0x330 [ 33.623532][ C2] _raw_write_lock+0x30/0x40 [ 33.623797][ C2] addrconf_rs_timer+0xa9/0x730 [ 33.623958][ C2] call_timer_fn+0x13b/0x230 [ 33.624119][ C2] __run_timers+0x545/0x810 [ 33.624279][ C2] run_timer_softirq+0xe8/0x1b0 [ 33.624441][ C2] __do_softirq+0x1f8/0x5df [ 33.624706][ C2] irq_exit_rcu+0x97/0xc0 [ 33.624870][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 33.625072][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 33.625376][ C2] unwind_get_return_address+0x13/0xa0 [ 33.625538][ C2] arch_stack_walk+0xa2/0xf0 [ 33.625699][ C2] stack_trace_save+0x94/0xd0 [ 33.625859][ C2] set_track_prepare+0x31/0x70 [ 33.626022][ C2] free_to_partial_list+0x1db/0x340 [ 33.626289][ C2] qlist_free_all+0x4c/0x140 [ 33.626451][ C2] kasan_quarantine_reduce+0x192/0x1e0 [ 33.626612][ C2] __kasan_slab_alloc+0x49/0x70 [ 33.626778][ C2] kmem_cache_alloc+0xef/0x270 [ 33.627041][ C2] __alloc_object+0x39/0x6f0 [ 33.627202][ C2] __create_object+0x22/0xb0 [ 33.627362][ C2] __kmalloc+0x2ce/0x3c0 [ 33.627521][ C2] p9_fcall_init+0x7d/0x1b0 [ 33.627786][ C2] p9_tag_alloc+0x138/0x700 [ 33.627948][ C2] p9_client_prepare_req+0xe6/0x290 [ 33.628110][ C2] p9_client_rpc+0x18d/0x930 [ 33.628270][ C2] p9_client_clunk+0x74/0xe0 [ 33.628535][ C2] v9fs_dentry_release+0xb9/0x140 [ 33.628697][ C2] __dentry_kill+0x1d9/0x4f0 [ 33.628857][ C2] dput.part.0+0x333/0x6c0 [ 33.629040][ C2] walk_component+0x199/0x4f0 [ 33.629205][ C2] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 33.629517][ C2] path_openat+0x1be/0x440 [ 33.629682][ C2] do_filp_open+0x1b3/0x3e0 [ 33.629848][ C2] do_sys_openat2+0x122/0x160 [ 33.630012][ C2] __x64_sys_openat+0x123/0x1e0 [ 33.630291][ C2] do_syscall_64+0xc6/0x1e0 [ 33.630451][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 33.630651][ C2] [ 33.630731][ C2] [ 33.630731][ C2] stack backtrace: [ 33.631030][ C2] CPU: 2 PID: 319 Comm: ip Not tainted 6.9.0-rc1-virtme #1 [ 33.631269][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 33.631731][ C2] Call Trace: [ 33.631858][ C2] [ 33.631941][ C2] dump_stack_lvl+0x82/0xd0 [ 33.632107][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 33.632308][ C2] ? kernel_text_address+0xce/0xe0 [ 33.632682][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 33.632885][ C2] ? __pfx_usage_skip+0x10/0x10 [ 33.633046][ C2] ? __pfx_usage_match+0x10/0x10 [ 33.633205][ C2] ? arch_stack_walk+0xa2/0xf0 [ 33.633471][ C2] mark_lock_irq+0x4cd/0xa10 [ 33.633632][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 33.633793][ C2] ? __pfx_stack_trace_save+0x10/0x10 [ 33.633973][ C2] ? save_trace+0x8f/0x5b0 [ 33.634246][ C2] mark_lock+0x28d/0x3e0 [ 33.634371][ C2] ? __pfx_stack_trace_save+0x10/0x10 [ 33.634536][ C2] mark_usage+0xd9/0x2a0 [ 33.634662][ C2] __lock_acquire+0x797/0x1570 [ 33.634828][ C2] ? __pfx_validate_chain+0x10/0x10 [ 33.635109][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 33.635268][ C2] lock_acquire.part.0+0xeb/0x330 [ 33.635430][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 33.635591][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 33.635858][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 33.636022][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 33.636180][ C2] ? lock_acquire+0x32/0xc0 [ 33.636340][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 33.636501][ C2] _raw_write_lock+0x30/0x40 [ 33.636766][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 33.636926][ C2] addrconf_rs_timer+0xa9/0x730 [ 33.637087][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 33.637248][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 33.637515][ C2] ? call_timer_fn+0xe8/0x230 [ 33.637675][ C2] ? lock_acquire+0x32/0xc0 [ 33.637835][ C2] ? call_timer_fn+0xe8/0x230 [ 33.637995][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 33.638258][ C2] call_timer_fn+0x13b/0x230 [ 33.638418][ C2] ? call_timer_fn+0xe8/0x230 [ 33.638577][ C2] ? call_timer_fn+0xe8/0x230 [ 33.638737][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 33.639023][ C2] ? hlock_class+0x4e/0x130 [ 33.639192][ C2] ? mark_held_locks+0x9e/0xe0 [ 33.639357][ C2] __run_timers+0x545/0x810 [ 33.639522][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 33.639686][ C2] ? __pfx___run_timers+0x10/0x10 [ 33.639958][ C2] ? do_raw_spin_lock+0x131/0x270 [ 33.640123][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 33.640296][ C2] ? lock_acquire+0x32/0xc0 [ 33.640456][ C2] ? run_timer_softirq+0xe0/0x1b0 [ 33.640725][ C2] run_timer_softirq+0xe8/0x1b0 [ 33.640888][ C2] __do_softirq+0x1f8/0x5df [ 33.641049][ C2] irq_exit_rcu+0x97/0xc0 [ 33.641170][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 33.641438][ C2] [ 33.641522][ C2] [ 33.641603][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 33.641804][ C2] RIP: 0010:unwind_get_return_address+0x13/0xa0 [ 33.642010][ C2] Code: 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df <48> 89 fa 55 48 c1 ea 03 53 48 89 fb 0f b6 04 02 84 c0 74 04 3c 03 [ 33.642690][ C2] RSP: 0018:ffffc90000fef220 EFLAGS: 00000202 [ 33.642896][ C2] RAX: dffffc0000000000 RBX: ffffffff989c8260 RCX: ffffc90000ff0001 [ 33.643243][ C2] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffc90000fef228 [ 33.643482][ C2] RBP: ffffc90000fef2c0 R08: ffffc90000fef268 R09: fffff520001fde2e [ 33.643832][ C2] R10: ffffc90000fef228 R11: ffffc90000fef269 R12: ffffc90000fef2f0 [ 33.644072][ C2] R13: 0000000000000000 R14: ffff888005670040 R15: ffff88800104fd00 [ 33.644313][ C2] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 33.644618][ C2] arch_stack_walk+0xa2/0xf0 [ 33.644780][ C2] ? __dentry_kill+0x1d9/0x4f0 [ 33.644943][ C2] stack_trace_save+0x94/0xd0 [ 33.645105][ C2] ? __pfx_stack_trace_save+0x10/0x10 [ 33.645267][ C2] ? find_held_lock+0x2c/0x110 [ 33.645640][ C2] set_track_prepare+0x31/0x70 [ 33.645802][ C2] ? kasan_quarantine_reduce+0x192/0x1e0 [ 33.645983][ C2] ? __kasan_slab_alloc+0x49/0x70 [ 33.646147][ C2] ? kmem_cache_alloc+0xef/0x270 [ 33.646419][ C2] ? __alloc_object+0x39/0x6f0 [ 33.646584][ C2] ? __create_object+0x22/0xb0 [ 33.646749][ C2] ? __kmalloc+0x2ce/0x3c0 [ 33.646915][ C2] ? p9_fcall_init+0x7d/0x1b0 [ 33.647195][ C2] ? p9_tag_alloc+0x138/0x700 [ 33.647356][ C2] ? p9_client_prepare_req+0xe6/0x290 [ 33.647516][ C2] ? p9_client_rpc+0x18d/0x930 [ 33.647676][ C2] ? p9_client_clunk+0x74/0xe0 [ 33.647941][ C2] ? v9fs_dentry_release+0xb9/0x140 [ 33.648103][ C2] ? mark_held_locks+0x9e/0xe0 [ 33.648262][ C2] free_to_partial_list+0x1db/0x340 [ 33.648423][ C2] ? qlist_free_all+0x47/0x140 [ 33.648586][ C2] qlist_free_all+0x4c/0x140 [ 33.648849][ C2] kasan_quarantine_reduce+0x192/0x1e0 [ 33.649032][ C2] __kasan_slab_alloc+0x49/0x70 [ 33.649201][ C2] kmem_cache_alloc+0xef/0x270 [ 33.649367][ C2] ? p9_fcall_init+0x7d/0x1b0 [ 33.649640][ C2] __alloc_object+0x39/0x6f0 [ 33.649805][ C2] ? p9_fcall_init+0x7d/0x1b0 [ 33.649970][ C2] __create_object+0x22/0xb0 [ 33.650137][ C2] ? p9_fcall_init+0x7d/0x1b0 [ 33.650408][ C2] __kmalloc+0x2ce/0x3c0 [ 33.650533][ C2] p9_fcall_init+0x7d/0x1b0 [ 33.650698][ C2] p9_tag_alloc+0x138/0x700 [ 33.650863][ C2] ? __pfx_p9_tag_alloc+0x10/0x10 [ 33.651035][ C2] ? validate_chain+0x130/0x9b0 [ 33.651307][ C2] ? hlock_class+0x4e/0x130 [ 33.651471][ C2] p9_client_prepare_req+0xe6/0x290 [ 33.651635][ C2] ? hlock_class+0x4e/0x130 [ 33.651800][ C2] ? __pfx_p9_client_prepare_req+0x10/0x10 [ 33.652111][ C2] ? __lock_acquire+0xaf0/0x1570 [ 33.652279][ C2] p9_client_rpc+0x18d/0x930 [ 33.652443][ C2] ? __pfx_p9_client_rpc+0x10/0x10 [ 33.652607][ C2] ? __lock_release+0x103/0x460 [ 33.652883][ C2] ? list_lru_add+0x76/0x250 [ 33.653043][ C2] ? __pfx___lock_release+0x10/0x10 [ 33.653201][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 33.653363][ C2] ? find_held_lock+0x2c/0x110 [ 33.653628][ C2] ? __lock_release+0x103/0x460 [ 33.653787][ C2] ? __pfx___lock_release+0x10/0x10 [ 33.653947][ C2] p9_client_clunk+0x74/0xe0 [ 33.654107][ C2] v9fs_dentry_release+0xb9/0x140 [ 33.654370][ C2] __dentry_kill+0x1d9/0x4f0 [ 33.654529][ C2] ? __pfx_kfree_link+0x10/0x10 [ 33.654691][ C2] dput.part.0+0x333/0x6c0 [ 33.654849][ C2] walk_component+0x199/0x4f0 [ 33.655012][ C2] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 33.655315][ C2] ? __pfx_link_path_walk.part.0.constprop.0+0x10/0x10 [ 33.655515][ C2] path_openat+0x1be/0x440 [ 33.655675][ C2] ? __pfx_path_openat+0x10/0x10 [ 33.655941][ C2] ? __lock_acquire+0xaf0/0x1570 [ 33.656101][ C2] do_filp_open+0x1b3/0x3e0 [ 33.656261][ C2] ? __pfx_do_filp_open+0x10/0x10 [ 33.656420][ C2] ? find_held_lock+0x2c/0x110 [ 33.656584][ C2] ? __pfx_kfree_link+0x10/0x10 [ 33.656848][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 33.657009][ C2] ? alloc_fd+0x1f5/0x650 [ 33.657130][ C2] ? do_raw_spin_unlock+0x58/0x220 [ 33.657289][ C2] ? _raw_spin_unlock+0x23/0x40 [ 33.657551][ C2] ? alloc_fd+0x1f5/0x650 [ 33.657672][ C2] do_sys_openat2+0x122/0x160 [ 33.657830][ C2] ? find_held_lock+0x2c/0x110 [ 33.657988][ C2] ? __pfx_do_sys_openat2+0x10/0x10 [ 33.658163][ C2] ? do_user_addr_fault+0x4b8/0xbe0 [ 33.658531][ C2] ? __pfx___lock_release+0x10/0x10 [ 33.658691][ C2] ? __up_read+0x1a7/0x780 [ 33.658850][ C2] __x64_sys_openat+0x123/0x1e0 [ 33.659033][ C2] ? __pfx___x64_sys_openat+0x10/0x10 [ 33.659306][ C2] ? do_user_addr_fault+0x4bd/0xbe0 [ 33.659472][ C2] do_syscall_64+0xc6/0x1e0 [ 33.659638][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 33.659844][ C2] RIP: 0033:0x7f418327d0e8 [ 33.660121][ C2] Code: f9 41 89 f0 41 83 e2 40 75 30 89 f0 25 00 00 41 00 3d 00 00 41 00 74 22 44 89 c2 4c 89 ce bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 30 c3 0f 1f 80 00 00 00 00 48 8d 44 24 08 c7 [ 33.660698][ C2] RSP: 002b:00007ffd22574858 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 [ 33.661045][ C2] RAX: ffffffffffffffda RBX: 00007ffd22574aef RCX: 00007f418327d0e8 [ 33.661284][ C2] RDX: 0000000000080000 RSI: 00007ffd225748d0 RDI: 00000000ffffff9c [ 33.661626][ C2] RBP: 00007ffd225748c0 R08: 0000000000080000 R09: 00007ffd225748d0 [ 33.661865][ C2] R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffd225748d7 [ 33.662101][ C2] R13: 00007ffd22574b00 R14: 00007ffd225748d0 R15: 00007f418324e000 [ 33.662449][ C2] [ 41.947298][ T367] netem: version 1.3