[ 24.389832][ T248] ip (248) used greatest stack depth: 23328 bytes left [ 24.660826][ T251] ip (251) used greatest stack depth: 23296 bytes left [ 30.379643][ C2] [ 30.379876][ C2] ======================================================== [ 30.380185][ C2] WARNING: possible irq lock inversion dependency detected [ 30.380495][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 30.380713][ C2] -------------------------------------------------------- [ 30.381028][ C2] ip/295 just changed the state of lock: [ 30.381238][ C2] ffff888005bf8d80 (&ndev->lock){++-.}-{2:2}, at: addrconf_rs_timer+0xa9/0x730 [ 30.381642][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 30.381943][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 30.381948][ C2] [ 30.381948][ C2] [ 30.381948][ C2] and interrupts could create inverse lock ordering between them. [ 30.381948][ C2] [ 30.382539][ C2] [ 30.382539][ C2] other info that might help us debug this: [ 30.382774][ C2] Possible interrupt unsafe locking scenario: [ 30.382774][ C2] [ 30.383011][ C2] CPU0 CPU1 [ 30.383175][ C2] ---- ---- [ 30.383342][ C2] lock(&p->alloc_lock); [ 30.383464][ C2] local_irq_disable(); [ 30.383657][ C2] lock(&ndev->lock); [ 30.383857][ C2] lock(&p->alloc_lock); [ 30.384052][ C2] [ 30.384170][ C2] lock(&ndev->lock); [ 30.384291][ C2] [ 30.384291][ C2] *** DEADLOCK *** [ 30.384291][ C2] [ 30.384525][ C2] 2 locks held by ip/295: [ 30.384644][ C2] #0: ffffffffb5b37510 (remove_cache_srcu){.+.+}-{0:0}, at: kasan_quarantine_reduce+0x85/0x1e0 [ 30.384966][ C2] #1: ffffc90000230b68 ((&ndev->rs_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 30.385246][ C2] [ 30.385246][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 30.385520][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 30.385685][ C2] HARDIRQ-ON-W at: [ 30.385808][ C2] __lock_acquire+0x797/0x1570 [ 30.386014][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.386214][ C2] _raw_spin_lock+0x30/0x40 [ 30.386414][ C2] set_mems_allowed+0x1d/0x210 [ 30.386616][ C2] kernel_init_freeable+0x72/0x310 [ 30.386820][ C2] kernel_init+0x20/0x200 [ 30.387022][ C2] ret_from_fork+0x31/0x70 [ 30.387224][ C2] ret_from_fork_asm+0x1a/0x30 [ 30.387422][ C2] SOFTIRQ-ON-W at: [ 30.387541][ C2] __lock_acquire+0x797/0x1570 [ 30.387741][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.387940][ C2] _raw_spin_lock+0x30/0x40 [ 30.388149][ C2] set_mems_allowed+0x1d/0x210 [ 30.388347][ C2] kernel_init_freeable+0x72/0x310 [ 30.388548][ C2] kernel_init+0x20/0x200 [ 30.388747][ C2] ret_from_fork+0x31/0x70 [ 30.388947][ C2] ret_from_fork_asm+0x1a/0x30 [ 30.389145][ C2] INITIAL USE at: [ 30.389269][ C2] __lock_acquire+0x797/0x1570 [ 30.389468][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.389667][ C2] _raw_spin_lock+0x30/0x40 [ 30.389878][ C2] set_mems_allowed+0x1d/0x210 [ 30.390084][ C2] kernel_init_freeable+0x72/0x310 [ 30.390283][ C2] kernel_init+0x20/0x200 [ 30.390486][ C2] ret_from_fork+0x31/0x70 [ 30.390688][ C2] ret_from_fork_asm+0x1a/0x30 [ 30.390887][ C2] } [ 30.390968][ C2] ... key at: [] __key.388+0x0/0x40 [ 30.391208][ C2] ... acquired at: [ 30.391328][ C2] __lock_acquire+0xaf0/0x1570 [ 30.391488][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.391645][ C2] _raw_spin_lock+0x30/0x40 [ 30.391806][ C2] __get_task_comm+0x27/0x70 [ 30.391966][ C2] ref_tracker_alloc+0x2ee/0x490 [ 30.392125][ C2] netdev_get_by_index+0x5e/0x80 [ 30.392284][ C2] fib6_nh_init+0x3d8/0x1580 [ 30.392444][ C2] ip6_route_info_create+0xf18/0x17d0 [ 30.392604][ C2] addrconf_f6i_alloc+0x265/0x560 [ 30.392761][ C2] __ipv6_dev_ac_inc+0x25f/0xb10 [ 30.392920][ C2] addrconf_join_anycast+0x1c0/0x220 [ 30.393081][ C2] dev_forward_change+0x2a6/0x7b0 [ 30.393239][ C2] addrconf_fixup_forwarding+0x23f/0x460 [ 30.393438][ C2] addrconf_sysctl_forward+0x212/0x2b0 [ 30.393597][ C2] proc_sys_call_handler+0x403/0x5e0 [ 30.393755][ C2] vfs_write+0x9e5/0x10a0 [ 30.393914][ C2] ksys_write+0xf5/0x1e0 [ 30.394074][ C2] do_syscall_64+0xc6/0x1e0 [ 30.394237][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.394435][ C2] [ 30.394515][ C2] -> (&ndev->lock){++-.}-{2:2} { [ 30.394678][ C2] HARDIRQ-ON-W at: [ 30.394798][ C2] __lock_acquire+0x797/0x1570 [ 30.394999][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.395200][ C2] _raw_write_lock_bh+0x38/0x50 [ 30.395402][ C2] addrconf_permanent_addr+0x6e/0x670 [ 30.395604][ C2] addrconf_notify+0x749/0xd60 [ 30.395805][ C2] notifier_call_chain+0xcd/0x150 [ 30.396007][ C2] __dev_notify_flags+0xe6/0x250 [ 30.396207][ C2] dev_change_flags+0xec/0x160 [ 30.396419][ C2] do_setlink+0x7d6/0x21e0 [ 30.396618][ C2] __rtnl_newlink+0xaa7/0xd80 [ 30.396824][ C2] rtnl_newlink+0x63/0xa0 [ 30.397022][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 30.397221][ C2] netlink_rcv_skb+0x130/0x360 [ 30.397423][ C2] netlink_unicast+0x449/0x710 [ 30.397622][ C2] netlink_sendmsg+0x723/0xbe0 [ 30.397821][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 30.398021][ C2] ___sys_sendmsg+0xee/0x170 [ 30.398225][ C2] __sys_sendmsg+0xcd/0x170 [ 30.398424][ C2] do_syscall_64+0xc6/0x1e0 [ 30.398623][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.398865][ C2] HARDIRQ-ON-R at: [ 30.398986][ C2] __lock_acquire+0x797/0x1570 [ 30.399187][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.399389][ C2] _raw_read_lock_bh+0x44/0x80 [ 30.399592][ C2] inet6_fill_ifla6_attrs+0x516/0x740 [ 30.399790][ C2] inet6_fill_link_af+0x5e/0xe0 [ 30.400014][ C2] rtnl_fill_ifinfo+0x1615/0x2a90 [ 30.400214][ C2] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 30.400412][ C2] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 30.400657][ C2] rtmsg_ifinfo+0x5b/0xa0 [ 30.400859][ C2] register_netdevice+0x1177/0x1690 [ 30.401058][ C2] register_netdev+0x20/0x40 [ 30.401255][ C2] vti6_init_net+0x25d/0x380 [ 30.401456][ C2] ops_init+0x9b/0x560 [ 30.401618][ C2] register_pernet_operations+0x2db/0x710 [ 30.401857][ C2] register_pernet_device+0x2a/0x60 [ 30.402059][ C2] vti6_tunnel_init+0x18/0x110 [ 30.402259][ C2] do_one_initcall+0x8d/0x1e0 [ 30.402459][ C2] do_initcalls+0x1b2/0x3e0 [ 30.402662][ C2] kernel_init_freeable+0x232/0x310 [ 30.402862][ C2] kernel_init+0x20/0x200 [ 30.403062][ C2] ret_from_fork+0x31/0x70 [ 30.403265][ C2] ret_from_fork_asm+0x1a/0x30 [ 30.403463][ C2] IN-SOFTIRQ-W at: [ 30.403687][ C2] __lock_acquire+0x797/0x1570 [ 30.403888][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.404088][ C2] _raw_write_lock+0x30/0x40 [ 30.404287][ C2] addrconf_rs_timer+0xa9/0x730 [ 30.404589][ C2] call_timer_fn+0x13b/0x230 [ 30.404793][ C2] __run_timers+0x545/0x810 [ 30.404995][ C2] timer_expire_remote+0x9b/0xe0 [ 30.405297][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 30.405503][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 30.405701][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 30.405901][ C2] __do_softirq+0x1f8/0x5df [ 30.406206][ C2] irq_exit_rcu+0x97/0xc0 [ 30.406405][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 30.406643][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 30.406985][ C2] kasan_report+0xd/0xf0 [ 30.407183][ C2] memchr_inv+0x1f4/0x260 [ 30.407381][ C2] check_bytes_and_report+0x5d/0x150 [ 30.407687][ C2] check_object+0x141/0x370 [ 30.407886][ C2] free_slab+0x86/0x100 [ 30.408090][ C2] qlist_free_all+0x4c/0x140 [ 30.408496][ C2] kasan_quarantine_reduce+0x192/0x1e0 [ 30.408694][ C2] __kasan_slab_alloc+0x49/0x70 [ 30.408894][ C2] kmalloc_trace+0x101/0x280 [ 30.409093][ C2] alloc_empty_backing_file+0x4d/0xf0 [ 30.409398][ C2] backing_file_open+0x26/0xf0 [ 30.409596][ C2] ovl_open_realfile+0x233/0x340 [ 30.409794][ C2] ovl_open+0x1aa/0x250 [ 30.410101][ C2] do_dentry_open+0x43c/0x1490 [ 30.410302][ C2] do_open+0x677/0xd90 [ 30.410463][ C2] path_openat+0x256/0x440 [ 30.410666][ C2] do_filp_open+0x1b3/0x3e0 [ 30.410969][ C2] do_sys_openat2+0x122/0x160 [ 30.411168][ C2] __x64_sys_openat+0x123/0x1e0 [ 30.411367][ C2] do_syscall_64+0xc6/0x1e0 [ 30.411670][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.411909][ C2] INITIAL USE at: [ 30.412028][ C2] __lock_acquire+0x797/0x1570 [ 30.412233][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.412535][ C2] _raw_write_lock_bh+0x38/0x50 [ 30.412736][ C2] addrconf_permanent_addr+0x6e/0x670 [ 30.412936][ C2] addrconf_notify+0x749/0xd60 [ 30.413241][ C2] notifier_call_chain+0xcd/0x150 [ 30.413439][ C2] __dev_notify_flags+0xe6/0x250 [ 30.413642][ C2] dev_change_flags+0xec/0x160 [ 30.413840][ C2] do_setlink+0x7d6/0x21e0 [ 30.414140][ C2] __rtnl_newlink+0xaa7/0xd80 [ 30.414339][ C2] rtnl_newlink+0x63/0xa0 [ 30.414538][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 30.414840][ C2] netlink_rcv_skb+0x130/0x360 [ 30.415040][ C2] netlink_unicast+0x449/0x710 [ 30.415243][ C2] netlink_sendmsg+0x723/0xbe0 [ 30.415548][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 30.415748][ C2] ___sys_sendmsg+0xee/0x170 [ 30.415947][ C2] __sys_sendmsg+0xcd/0x170 [ 30.416146][ C2] do_syscall_64+0xc6/0x1e0 [ 30.416447][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.416685][ C2] INITIAL READ USE at: [ 30.416807][ C2] __lock_acquire+0x797/0x1570 [ 30.417110][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.417311][ C2] _raw_read_lock_bh+0x44/0x80 [ 30.417511][ C2] inet6_fill_ifla6_attrs+0x516/0x740 [ 30.417749][ C2] inet6_fill_link_af+0x5e/0xe0 [ 30.418059][ C2] rtnl_fill_ifinfo+0x1615/0x2a90 [ 30.418260][ C2] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 30.418497][ C2] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 30.418840][ C2] rtmsg_ifinfo+0x5b/0xa0 [ 30.419039][ C2] register_netdevice+0x1177/0x1690 [ 30.419277][ C2] register_netdev+0x20/0x40 [ 30.419583][ C2] vti6_init_net+0x25d/0x380 [ 30.419782][ C2] ops_init+0x9b/0x560 [ 30.419997][ C2] register_pernet_operations+0x2db/0x710 [ 30.420338][ C2] register_pernet_device+0x2a/0x60 [ 30.420575][ C2] vti6_tunnel_init+0x18/0x110 [ 30.420774][ C2] do_one_initcall+0x8d/0x1e0 [ 30.421182][ C2] do_initcalls+0x1b2/0x3e0 [ 30.421380][ C2] kernel_init_freeable+0x232/0x310 [ 30.421617][ C2] kernel_init+0x20/0x200 [ 30.421917][ C2] ret_from_fork+0x31/0x70 [ 30.422117][ C2] ret_from_fork_asm+0x1a/0x30 [ 30.422316][ C2] } [ 30.422397][ C2] ... key at: [] __key.37+0x0/0x40 [ 30.422738][ C2] ... acquired at: [ 30.422854][ C2] mark_lock+0x28d/0x3e0 [ 30.423012][ C2] mark_usage+0xd9/0x2a0 [ 30.423169][ C2] __lock_acquire+0x797/0x1570 [ 30.423327][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.423586][ C2] _raw_write_lock+0x30/0x40 [ 30.423744][ C2] addrconf_rs_timer+0xa9/0x730 [ 30.423900][ C2] call_timer_fn+0x13b/0x230 [ 30.424061][ C2] __run_timers+0x545/0x810 [ 30.424319][ C2] timer_expire_remote+0x9b/0xe0 [ 30.424479][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 30.424638][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 30.424796][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 30.425056][ C2] __do_softirq+0x1f8/0x5df [ 30.425214][ C2] irq_exit_rcu+0x97/0xc0 [ 30.425372][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 30.425571][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 30.425771][ C2] kasan_report+0xd/0xf0 [ 30.425928][ C2] memchr_inv+0x1f4/0x260 [ 30.426087][ C2] check_bytes_and_report+0x5d/0x150 [ 30.426246][ C2] check_object+0x141/0x370 [ 30.426510][ C2] free_slab+0x86/0x100 [ 30.426629][ C2] qlist_free_all+0x4c/0x140 [ 30.426796][ C2] kasan_quarantine_reduce+0x192/0x1e0 [ 30.426958][ C2] __kasan_slab_alloc+0x49/0x70 [ 30.427115][ C2] kmalloc_trace+0x101/0x280 [ 30.427372][ C2] alloc_empty_backing_file+0x4d/0xf0 [ 30.427529][ C2] backing_file_open+0x26/0xf0 [ 30.427686][ C2] ovl_open_realfile+0x233/0x340 [ 30.427851][ C2] ovl_open+0x1aa/0x250 [ 30.428070][ C2] do_dentry_open+0x43c/0x1490 [ 30.428228][ C2] do_open+0x677/0xd90 [ 30.428347][ C2] path_openat+0x256/0x440 [ 30.428506][ C2] do_filp_open+0x1b3/0x3e0 [ 30.428670][ C2] do_sys_openat2+0x122/0x160 [ 30.428927][ C2] __x64_sys_openat+0x123/0x1e0 [ 30.429086][ C2] do_syscall_64+0xc6/0x1e0 [ 30.429240][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.429433][ C2] [ 30.429611][ C2] [ 30.429611][ C2] stack backtrace: [ 30.429802][ C2] CPU: 2 PID: 295 Comm: ip Not tainted 6.9.0-rc1-virtme #1 [ 30.430049][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 30.430505][ C2] Call Trace: [ 30.430626][ C2] [ 30.430708][ C2] dump_stack_lvl+0x82/0xd0 [ 30.430869][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 30.431166][ C2] ? kernel_text_address+0xce/0xe0 [ 30.431327][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 30.431523][ C2] ? __pfx_usage_skip+0x10/0x10 [ 30.431680][ C2] ? __pfx_usage_match+0x10/0x10 [ 30.431943][ C2] ? arch_stack_walk+0xa2/0xf0 [ 30.432100][ C2] mark_lock_irq+0x4cd/0xa10 [ 30.432257][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 30.432416][ C2] ? __pfx_stack_trace_save+0x10/0x10 [ 30.432675][ C2] ? save_trace+0x8f/0x5b0 [ 30.432833][ C2] mark_lock+0x28d/0x3e0 [ 30.432951][ C2] ? __pfx_stack_trace_save+0x10/0x10 [ 30.433110][ C2] mark_usage+0xd9/0x2a0 [ 30.433229][ C2] __lock_acquire+0x797/0x1570 [ 30.433587][ C2] ? __pfx_validate_chain+0x10/0x10 [ 30.433747][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 30.433902][ C2] lock_acquire.part.0+0xeb/0x330 [ 30.434059][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 30.434315][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 30.434472][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 30.434631][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 30.434794][ C2] ? lock_acquire+0x32/0xc0 [ 30.434950][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 30.435206][ C2] _raw_write_lock+0x30/0x40 [ 30.435362][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 30.435517][ C2] addrconf_rs_timer+0xa9/0x730 [ 30.435673][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 30.435934][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 30.436092][ C2] ? call_timer_fn+0xe8/0x230 [ 30.436249][ C2] ? lock_acquire+0x32/0xc0 [ 30.436405][ C2] ? call_timer_fn+0xe8/0x230 [ 30.436663][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 30.436819][ C2] call_timer_fn+0x13b/0x230 [ 30.436976][ C2] ? call_timer_fn+0xe8/0x230 [ 30.437134][ C2] ? call_timer_fn+0xe8/0x230 [ 30.437389][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 30.437546][ C2] ? hlock_class+0x4e/0x130 [ 30.437705][ C2] ? mark_held_locks+0x9e/0xe0 [ 30.437863][ C2] __run_timers+0x545/0x810 [ 30.438019][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 30.438278][ C2] ? __pfx___run_timers+0x10/0x10 [ 30.438435][ C2] ? __lock_release+0x103/0x460 [ 30.438593][ C2] ? do_raw_spin_lock+0x131/0x270 [ 30.438750][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 30.439007][ C2] ? lock_acquire+0x32/0xc0 [ 30.439165][ C2] ? timer_expire_remote+0x93/0xe0 [ 30.439333][ C2] timer_expire_remote+0x9b/0xe0 [ 30.439489][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 30.439746][ C2] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 30.439961][ C2] ? hlock_class+0x4e/0x130 [ 30.440117][ C2] ? mark_lock+0x38/0x3e0 [ 30.440236][ C2] ? mark_held_locks+0x9e/0xe0 [ 30.440496][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 30.440658][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 30.440813][ C2] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 30.440970][ C2] ? mark_held_locks+0x9e/0xe0 [ 30.441128][ C2] __do_softirq+0x1f8/0x5df [ 30.441387][ C2] irq_exit_rcu+0x97/0xc0 [ 30.441504][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 30.441664][ C2] [ 30.441744][ C2] [ 30.441823][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 30.442122][ C2] RIP: 0010:kasan_report+0xd/0xf0 [ 30.442283][ C2] Code: cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 41 57 41 56 41 55 41 54 55 <53> 48 83 ec 70 9c 8f 04 24 0f 01 ca 65 4c 8b 3d ef f3 aa 4d 41 8b [ 30.442945][ C2] RSP: 0018:ffffc900005ef708 EFLAGS: 00000246 [ 30.443145][ C2] RAX: ffff8880062f6000 RBX: ffff8880062f5d58 RCX: ffffffffb4658784 [ 30.443383][ C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880062f5d58 [ 30.443719][ C2] RBP: 0000000000000f98 R08: ffff8880062f5064 R09: 000000000000005a [ 30.443954][ C2] R10: 0000000000000008 R11: 0000000000001000 R12: 5a5a5a5a5a5a5a5a [ 30.444187][ C2] R13: 000000000000005a R14: dffffc0000000000 R15: ffff8880062f5068 [ 30.444525][ C2] ? memchr_inv+0x1f4/0x260 [ 30.444686][ C2] memchr_inv+0x1f4/0x260 [ 30.444808][ C2] check_bytes_and_report+0x5d/0x150 [ 30.444968][ C2] check_object+0x141/0x370 [ 30.445226][ C2] free_slab+0x86/0x100 [ 30.445345][ C2] qlist_free_all+0x4c/0x140 [ 30.445503][ C2] kasan_quarantine_reduce+0x192/0x1e0 [ 30.445660][ C2] __kasan_slab_alloc+0x49/0x70 [ 30.446017][ C2] kmalloc_trace+0x101/0x280 [ 30.446174][ C2] ? __pfx_make_vfsuid+0x10/0x10 [ 30.446337][ C2] alloc_empty_backing_file+0x4d/0xf0 [ 30.446494][ C2] backing_file_open+0x26/0xf0 [ 30.446650][ C2] ovl_open_realfile+0x233/0x340 [ 30.446908][ C2] ovl_open+0x1aa/0x250 [ 30.447027][ C2] ? __pfx_ovl_open+0x10/0x10 [ 30.447184][ C2] ? lock_acquire+0x32/0xc0 [ 30.447343][ C2] ? do_dentry_open+0x33/0x1490 [ 30.447602][ C2] do_dentry_open+0x43c/0x1490 [ 30.447758][ C2] ? __pfx_ovl_open+0x10/0x10 [ 30.447917][ C2] ? may_open+0xde/0x310 [ 30.448036][ C2] do_open+0x677/0xd90 [ 30.448155][ C2] path_openat+0x256/0x440 [ 30.448413][ C2] ? __pfx_path_openat+0x10/0x10 [ 30.448572][ C2] ? __lock_acquire+0xaf0/0x1570 [ 30.448730][ C2] do_filp_open+0x1b3/0x3e0 [ 30.448886][ C2] ? __pfx_do_filp_open+0x10/0x10 [ 30.449142][ C2] ? find_held_lock+0x2c/0x110 [ 30.449301][ C2] ? __pfx_kfree_link+0x10/0x10 [ 30.449457][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 30.449619][ C2] ? alloc_fd+0x1f5/0x650 [ 30.449739][ C2] ? _raw_spin_unlock+0x23/0x40 [ 30.450006][ C2] ? alloc_fd+0x1f5/0x650 [ 30.450126][ C2] do_sys_openat2+0x122/0x160 [ 30.450283][ C2] ? __pfx_do_sys_openat2+0x10/0x10 [ 30.450439][ C2] ? __pfx___debug_check_no_obj_freed+0x10/0x10 [ 30.450736][ C2] ? __virt_addr_valid+0x227/0x420 [ 30.450897][ C2] __x64_sys_openat+0x123/0x1e0 [ 30.451057][ C2] ? __pfx___x64_sys_openat+0x10/0x10 [ 30.451214][ C2] do_syscall_64+0xc6/0x1e0 [ 30.451471][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 30.451666][ C2] RIP: 0033:0x7f60cff220e8 [ 30.451826][ 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 [ 30.452486][ C2] RSP: 002b:00007ffd62416d18 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 [ 30.452724][ C2] RAX: ffffffffffffffda RBX: 00007ffd62416f9f RCX: 00007f60cff220e8 [ 30.453059][ C2] RDX: 0000000000080000 RSI: 00007ffd62416d90 RDI: 00000000ffffff9c [ 30.453298][ C2] RBP: 00007ffd62416d80 R08: 0000000000080000 R09: 00007ffd62416d90 [ 30.453530][ C2] R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffd62416d97 [ 30.453868][ C2] R13: 00007ffd62416fb0 R14: 00007ffd62416d90 R15: 00007f60cfef3000 [ 30.454107][ C2] [ 32.082705][ T311] Mirror/redirect action on