[ 23.792134][ T238] ip (238) used greatest stack depth: 23328 bytes left [ 27.181204][ T275] ip (275) used greatest stack depth: 23168 bytes left [ 29.325432][ T292] [ 29.325531][ T292] ===================================================== [ 29.325714][ T292] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 29.325932][ T292] 6.9.0-rc1-virtme #1 Not tainted [ 29.326072][ T292] ----------------------------------------------------- [ 29.326248][ T292] ip/292 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 29.326425][ T292] ffff8880055ecee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 29.326685][ T292] [ 29.326685][ T292] and this task is already holding: [ 29.326893][ T292] ffff88803613f218 (&ul->lock){+.-.}-{2:2}, at: rt6_uncached_list_flush_dev+0x138/0x840 [ 29.327145][ T292] which would create a new lock dependency: [ 29.327319][ T292] (&ul->lock){+.-.}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 29.327547][ T292] [ 29.327547][ T292] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 29.327788][ T292] (&ul->lock){+.-.}-{2:2} [ 29.327792][ T292] [ 29.327792][ T292] ... which became SOFTIRQ-irq-safe at: [ 29.328141][ T292] __lock_acquire+0x797/0x1570 [ 29.328289][ T292] lock_acquire.part.0+0xeb/0x330 [ 29.328430][ T292] _raw_spin_lock_bh+0x38/0x50 [ 29.328576][ T292] rt6_uncached_list_del+0x77/0x200 [ 29.328719][ T292] ip6_dst_destroy+0x74/0x1e0 [ 29.328858][ T292] dst_destroy+0xbc/0x370 [ 29.329001][ T292] rcu_do_batch+0x3c0/0xfb0 [ 29.329139][ T292] rcu_core+0x2be/0x500 [ 29.329247][ T292] __do_softirq+0x1f8/0x5df [ 29.329391][ T292] irq_exit_rcu+0x97/0xc0 [ 29.329530][ T292] sysvec_apic_timer_interrupt+0x75/0x80 [ 29.329674][ T292] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 29.329850][ T292] _raw_spin_unlock_irqrestore+0x43/0x70 [ 29.329991][ T292] get_partial_node.part.0+0x1c5/0x3a0 [ 29.330133][ T292] ___slab_alloc+0xb70/0x10a0 [ 29.330274][ T292] __kmalloc+0x34c/0x3c0 [ 29.330379][ T292] p9_fcall_init+0x7d/0x1b0 [ 29.330520][ T292] p9_tag_alloc+0x138/0x700 [ 29.330660][ T292] p9_client_prepare_req+0xe6/0x290 [ 29.330801][ T292] p9_client_rpc+0x18d/0x930 [ 29.330942][ T292] p9_client_read_once+0x1f1/0x860 [ 29.331082][ T292] p9_client_read+0xfd/0x160 [ 29.331225][ T292] v9fs_issue_read+0x104/0x1b0 [ 29.331365][ T292] netfs_rreq_submit_slice+0x3da/0x5f0 [ 29.331505][ T292] netfs_begin_read+0x450/0xb20 [ 29.331647][ T292] netfs_unbuffered_read_iter_locked+0x5c4/0x810 [ 29.331820][ T292] netfs_unbuffered_read_iter+0xaa/0xf0 [ 29.331965][ T292] do_iter_readv_writev+0x42f/0x620 [ 29.332106][ T292] vfs_iter_read+0x122/0x450 [ 29.332245][ T292] backing_file_read_iter+0x4bc/0x6a0 [ 29.332383][ T292] ovl_read_iter+0x1ff/0x270 [ 29.332527][ T292] __kernel_read+0x336/0x9e0 [ 29.332665][ T292] search_binary_handler+0xb8/0x550 [ 29.332804][ T292] exec_binprm+0x120/0x400 [ 29.332948][ T292] bprm_execve+0xe9/0x4f0 [ 29.333088][ T292] do_execveat_common.isra.0+0x4a6/0x6a0 [ 29.333231][ T292] __x64_sys_execve+0x8c/0xb0 [ 29.333372][ T292] do_syscall_64+0xc6/0x1e0 [ 29.333514][ T292] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 29.333690][ T292] [ 29.333690][ T292] to a SOFTIRQ-irq-unsafe lock: [ 29.333860][ T292] (&p->alloc_lock){+.+.}-{2:2} [ 29.333865][ T292] [ 29.333865][ T292] ... which became SOFTIRQ-irq-unsafe at: [ 29.334204][ T292] ... [ 29.334205][ T292] __lock_acquire+0x797/0x1570 [ 29.334423][ T292] lock_acquire.part.0+0xeb/0x330 [ 29.334561][ T292] _raw_spin_lock+0x30/0x40 [ 29.334702][ T292] set_mems_allowed+0x1d/0x210 [ 29.334842][ T292] kernel_init_freeable+0x72/0x310 [ 29.334987][ T292] kernel_init+0x20/0x200 [ 29.335128][ T292] ret_from_fork+0x31/0x70 [ 29.335271][ T292] ret_from_fork_asm+0x1a/0x30 [ 29.335411][ T292] [ 29.335411][ T292] other info that might help us debug this: [ 29.335411][ T292] [ 29.335684][ T292] Possible interrupt unsafe locking scenario: [ 29.335684][ T292] [ 29.335895][ T292] CPU0 CPU1 [ 29.336035][ T292] ---- ---- [ 29.336174][ T292] lock(&p->alloc_lock); [ 29.336283][ T292] local_irq_disable(); [ 29.336458][ T292] lock(&ul->lock); [ 29.336636][ T292] lock(&p->alloc_lock); [ 29.336810][ T292] [ 29.336920][ T292] lock(&ul->lock); [ 29.337030][ T292] [ 29.337030][ T292] *** DEADLOCK *** [ 29.337030][ T292] [ 29.337234][ T292] 2 locks held by ip/292: [ 29.337339][ T292] #0: ffffffff975b7208 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x2af/0xbf0 [ 29.337602][ T292] #1: ffff88803613f218 (&ul->lock){+.-.}-{2:2}, at: rt6_uncached_list_flush_dev+0x138/0x840 [ 29.337892][ T292] [ 29.337892][ T292] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 29.338169][ T292] -> (&ul->lock){+.-.}-{2:2} { [ 29.338316][ T292] HARDIRQ-ON-W at: [ 29.338423][ T292] __lock_acquire+0x797/0x1570 [ 29.338601][ T292] lock_acquire.part.0+0xeb/0x330 [ 29.338780][ T292] _raw_spin_lock_bh+0x38/0x50 [ 29.338960][ T292] rt6_uncached_list_add+0x55/0x1b0 [ 29.339136][ T292] icmp6_dst_alloc+0x2c0/0x450 [ 29.339311][ T292] mld_sendpack+0x529/0xbc0 [ 29.339491][ T292] mld_ifc_work+0x32/0x1f0 [ 29.339667][ T292] process_one_work+0xe2c/0x1730 [ 29.339847][ T292] worker_thread+0x587/0xd30 [ 29.340025][ T292] kthread+0x28a/0x350 [ 29.340170][ T292] ret_from_fork+0x31/0x70 [ 29.340346][ T292] ret_from_fork_asm+0x1a/0x30 [ 29.340523][ T292] IN-SOFTIRQ-W at: [ 29.340629][ T292] __lock_acquire+0x797/0x1570 [ 29.340806][ T292] lock_acquire.part.0+0xeb/0x330 [ 29.340985][ T292] _raw_spin_lock_bh+0x38/0x50 [ 29.341161][ T292] rt6_uncached_list_del+0x77/0x200 [ 29.341339][ T292] ip6_dst_destroy+0x74/0x1e0 [ 29.341515][ T292] dst_destroy+0xbc/0x370 [ 29.341693][ T292] rcu_do_batch+0x3c0/0xfb0 [ 29.341873][ T292] rcu_core+0x2be/0x500 [ 29.342052][ T292] __do_softirq+0x1f8/0x5df [ 29.342233][ T292] irq_exit_rcu+0x97/0xc0 [ 29.342410][ T292] sysvec_apic_timer_interrupt+0x75/0x80 [ 29.342626][ T292] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 29.342840][ T292] _raw_spin_unlock_irqrestore+0x43/0x70 [ 29.343052][ T292] get_partial_node.part.0+0x1c5/0x3a0 [ 29.343231][ T292] ___slab_alloc+0xb70/0x10a0 [ 29.343412][ T292] __kmalloc+0x34c/0x3c0 [ 29.343591][ T292] p9_fcall_init+0x7d/0x1b0 [ 29.343771][ T292] p9_tag_alloc+0x138/0x700 [ 29.343950][ T292] p9_client_prepare_req+0xe6/0x290 [ 29.344128][ T292] p9_client_rpc+0x18d/0x930 [ 29.344304][ T292] p9_client_read_once+0x1f1/0x860 [ 29.344482][ T292] p9_client_read+0xfd/0x160 [ 29.344659][ T292] v9fs_issue_read+0x104/0x1b0 [ 29.344834][ T292] netfs_rreq_submit_slice+0x3da/0x5f0 [ 29.345013][ T292] netfs_begin_read+0x450/0xb20 [ 29.345190][ T292] netfs_unbuffered_read_iter_locked+0x5c4/0x810 [ 29.345398][ T292] netfs_unbuffered_read_iter+0xaa/0xf0 [ 29.345612][ T292] do_iter_readv_writev+0x42f/0x620 [ 29.345789][ T292] vfs_iter_read+0x122/0x450 [ 29.345966][ T292] backing_file_read_iter+0x4bc/0x6a0 [ 29.346144][ T292] ovl_read_iter+0x1ff/0x270 [ 29.346320][ T292] __kernel_read+0x336/0x9e0 [ 29.346499][ T292] search_binary_handler+0xb8/0x550 [ 29.346680][ T292] exec_binprm+0x120/0x400 [ 29.346859][ T292] bprm_execve+0xe9/0x4f0 [ 29.347038][ T292] do_execveat_common.isra.0+0x4a6/0x6a0 [ 29.347252][ T292] __x64_sys_execve+0x8c/0xb0 [ 29.347440][ T292] do_syscall_64+0xc6/0x1e0 [ 29.347620][ T292] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 29.347830][ T292] INITIAL USE at: [ 29.347940][ T292] __lock_acquire+0x797/0x1570 [ 29.348116][ T292] lock_acquire.part.0+0xeb/0x330 [ 29.348291][ T292] _raw_spin_lock_bh+0x38/0x50 [ 29.348468][ T292] rt6_uncached_list_add+0x55/0x1b0 [ 29.348647][ T292] icmp6_dst_alloc+0x2c0/0x450 [ 29.348824][ T292] mld_sendpack+0x529/0xbc0 [ 29.349000][ T292] mld_ifc_work+0x32/0x1f0 [ 29.349181][ T292] process_one_work+0xe2c/0x1730 [ 29.349357][ T292] worker_thread+0x587/0xd30 [ 29.349534][ T292] kthread+0x28a/0x350 [ 29.349677][ T292] ret_from_fork+0x31/0x70 [ 29.349854][ T292] ret_from_fork_asm+0x1a/0x30 [ 29.350035][ T292] } [ 29.350107][ T292] ... key at: [] __key.15+0x0/0x40 [ 29.350321][ T292] [ 29.350321][ T292] the dependencies between the lock to be acquired [ 29.350322][ T292] and SOFTIRQ-irq-unsafe lock: [ 29.350783][ T292] -> (&p->alloc_lock){+.+.}-{2:2} { [ 29.350931][ T292] HARDIRQ-ON-W at: [ 29.351040][ T292] __lock_acquire+0x797/0x1570 [ 29.351308][ T292] lock_acquire.part.0+0xeb/0x330 [ 29.351489][ T292] _raw_spin_lock+0x30/0x40 [ 29.351669][ T292] set_mems_allowed+0x1d/0x210 [ 29.351932][ T292] kernel_init_freeable+0x72/0x310 [ 29.352110][ T292] kernel_init+0x20/0x200 [ 29.352288][ T292] ret_from_fork+0x31/0x70 [ 29.352636][ T292] ret_from_fork_asm+0x1a/0x30 [ 29.352815][ T292] SOFTIRQ-ON-W at: [ 29.352924][ T292] __lock_acquire+0x797/0x1570 [ 29.353104][ T292] lock_acquire.part.0+0xeb/0x330 [ 29.353367][ T292] _raw_spin_lock+0x30/0x40 [ 29.353545][ T292] set_mems_allowed+0x1d/0x210 [ 29.353723][ T292] kernel_init_freeable+0x72/0x310 [ 29.353901][ T292] kernel_init+0x20/0x200 [ 29.354165][ T292] ret_from_fork+0x31/0x70 [ 29.354347][ T292] ret_from_fork_asm+0x1a/0x30 [ 29.354528][ T292] INITIAL USE at: [ 29.354719][ T292] __lock_acquire+0x797/0x1570 [ 29.354900][ T292] lock_acquire.part.0+0xeb/0x330 [ 29.355079][ T292] _raw_spin_lock+0x30/0x40 [ 29.355256][ T292] set_mems_allowed+0x1d/0x210 [ 29.355521][ T292] kernel_init_freeable+0x72/0x310 [ 29.355701][ T292] kernel_init+0x20/0x200 [ 29.355879][ T292] ret_from_fork+0x31/0x70 [ 29.356145][ T292] ret_from_fork_asm+0x1a/0x30 [ 29.356326][ T292] } [ 29.356400][ T292] ... key at: [] __key.388+0x0/0x40 [ 29.356618][ T292] ... acquired at: [ 29.356809][ T292] check_prev_add+0x194/0xce0 [ 29.356956][ T292] validate_chain+0x71d/0x9b0 [ 29.357099][ T292] __lock_acquire+0xaf0/0x1570 [ 29.357241][ T292] lock_acquire.part.0+0xeb/0x330 [ 29.357391][ T292] _raw_spin_lock+0x30/0x40 [ 29.357620][ T292] __get_task_comm+0x27/0x70 [ 29.357762][ T292] ref_tracker_alloc+0x2ee/0x490 [ 29.357904][ T292] rt6_uncached_list_flush_dev+0x494/0x840 [ 29.358081][ T292] rt6_disable_ip+0xd9/0x140 [ 29.358305][ T292] addrconf_ifdown.isra.0+0x103/0x1560 [ 29.358450][ T292] addrconf_notify+0xd1/0xd60 [ 29.358591][ T292] notifier_call_chain+0xcd/0x150 [ 29.358734][ T292] dev_close_many+0x2d8/0x650 [ 29.358962][ T292] unregister_netdevice_many_notify+0x3d5/0x1190 [ 29.359141][ T292] rtnl_dellink+0x330/0xa30 [ 29.359282][ T292] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 29.359425][ T292] netlink_rcv_skb+0x130/0x360 [ 29.359659][ T292] netlink_unicast+0x449/0x710 [ 29.359802][ T292] netlink_sendmsg+0x723/0xbe0 [ 29.359943][ T292] ____sys_sendmsg+0x7b2/0xa10 [ 29.360085][ T292] ___sys_sendmsg+0xee/0x170 [ 29.360314][ T292] __sys_sendmsg+0xcd/0x170 [ 29.360455][ T292] do_syscall_64+0xc6/0x1e0 [ 29.360596][ T292] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 29.360774][ T292] [ 29.360846][ T292] [ 29.360846][ T292] stack backtrace: [ 29.361103][ T292] CPU: 2 PID: 292 Comm: ip Not tainted 6.9.0-rc1-virtme #1 [ 29.361316][ T292] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 29.361710][ T292] Call Trace: [ 29.361827][ T292] [ 29.361901][ T292] dump_stack_lvl+0x82/0xd0 [ 29.362046][ T292] print_bad_irq_dependency+0x957/0xd40 [ 29.362187][ T292] ? hlock_class+0x4e/0x130 [ 29.362415][ T292] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 29.362592][ T292] ? __pfx_usage_skip+0x10/0x10 [ 29.362733][ T292] ? __bfs+0x246/0x650 [ 29.362839][ T292] ? __pfx_usage_match+0x10/0x10 [ 29.363065][ T292] check_irq_usage+0x596/0x850 [ 29.363207][ T292] ? __pfx_check_irq_usage+0x10/0x10 [ 29.363347][ T292] ? __bfs+0x246/0x650 [ 29.363454][ T292] ? __pfx_hlock_conflict+0x10/0x10 [ 29.363596][ T292] ? check_path.constprop.0+0x24/0x50 [ 29.363905][ T292] ? check_noncircular+0x14c/0x3e0 [ 29.364047][ T292] ? __pfx_check_noncircular+0x10/0x10 [ 29.364192][ T292] ? check_prev_add+0x194/0xce0 [ 29.364331][ T292] check_prev_add+0x194/0xce0 [ 29.364558][ T292] ? validate_chain+0x130/0x9b0 [ 29.364700][ T292] validate_chain+0x71d/0x9b0 [ 29.364842][ T292] ? mark_lock+0x38/0x3e0 [ 29.364950][ T292] ? __pfx_validate_chain+0x10/0x10 [ 29.365176][ T292] ? hlock_class+0x4e/0x130 [ 29.365318][ T292] ? mark_lock+0x38/0x3e0 [ 29.365426][ T292] __lock_acquire+0xaf0/0x1570 [ 29.365571][ T292] lock_acquire.part.0+0xeb/0x330 [ 29.365713][ T292] ? __get_task_comm+0x27/0x70 [ 29.365937][ T292] ? mark_lock+0x38/0x3e0 [ 29.366044][ T292] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 29.366187][ T292] ? trace_lock_acquire+0x135/0x1c0 [ 29.366332][ T292] ? __get_task_comm+0x27/0x70 [ 29.366557][ T292] ? lock_acquire+0x32/0xc0 [ 29.366699][ T292] ? __get_task_comm+0x27/0x70 [ 29.366841][ T292] _raw_spin_lock+0x30/0x40 [ 29.366981][ T292] ? __get_task_comm+0x27/0x70 [ 29.367123][ T292] __get_task_comm+0x27/0x70 [ 29.367348][ T292] ref_tracker_alloc+0x2ee/0x490 [ 29.367503][ T292] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 29.367646][ T292] ? __lock_release+0x103/0x460 [ 29.367790][ T292] ? rt6_uncached_list_flush_dev+0x494/0x840 [ 29.368048][ T292] ? rt6_disable_ip+0xd9/0x140 [ 29.368189][ T292] ? addrconf_ifdown.isra.0+0x103/0x1560 [ 29.368332][ T292] ? addrconf_notify+0xd1/0xd60 [ 29.368473][ T292] ? notifier_call_chain+0xcd/0x150 [ 29.368698][ T292] ? dev_close_many+0x2d8/0x650 [ 29.368839][ T292] ? unregister_netdevice_many_notify+0x3d5/0x1190 [ 29.369013][ T292] ? rtnl_dellink+0x330/0xa30 [ 29.369156][ T292] ? rtnetlink_rcv_msg+0x2fb/0xbf0 [ 29.369384][ T292] ? netlink_rcv_skb+0x130/0x360 [ 29.369526][ T292] ? netlink_unicast+0x449/0x710 [ 29.369667][ T292] ? netlink_sendmsg+0x723/0xbe0 [ 29.369808][ T292] ? ____sys_sendmsg+0x7b2/0xa10 [ 29.370031][ T292] ? ___sys_sendmsg+0xee/0x170 [ 29.370172][ T292] ? __sys_sendmsg+0xcd/0x170 [ 29.370314][ T292] ? do_syscall_64+0xc6/0x1e0 [ 29.370456][ T292] ? in6_dev_get+0xcc/0x210 [ 29.370683][ T292] rt6_uncached_list_flush_dev+0x494/0x840 [ 29.370860][ T292] rt6_disable_ip+0xd9/0x140 [ 29.371001][ T292] ? __pfx_rt6_disable_ip+0x10/0x10 [ 29.371141][ T292] ? hlock_class+0x4e/0x130 [ 29.371366][ T292] addrconf_ifdown.isra.0+0x103/0x1560 [ 29.371509][ T292] ? __try_to_del_timer_sync+0xe7/0x140 [ 29.371652][ T292] ? __pfx_addrconf_ifdown.isra.0+0x10/0x10 [ 29.371831][ T292] addrconf_notify+0xd1/0xd60 [ 29.372058][ T292] notifier_call_chain+0xcd/0x150 [ 29.372200][ T292] dev_close_many+0x2d8/0x650 [ 29.372341][ T292] ? find_held_lock+0x2c/0x110 [ 29.372480][ T292] ? __pfx_dev_close_many+0x10/0x10 [ 29.372622][ T292] ? sock_def_readable+0x129/0x300 [ 29.372847][ T292] ? __pfx___lock_release+0x10/0x10 [ 29.372986][ T292] ? trace_lock_acquire+0x135/0x1c0 [ 29.373127][ T292] unregister_netdevice_many_notify+0x3d5/0x1190 [ 29.373304][ T292] ? mutex_is_locked+0x17/0x50 [ 29.373529][ T292] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 29.373702][ T292] ? hlock_class+0x4e/0x130 [ 29.373842][ T292] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 29.374105][ T292] rtnl_dellink+0x330/0xa30 [ 29.374246][ T292] ? hlock_class+0x4e/0x130 [ 29.374385][ T292] ? __pfx_rtnl_dellink+0x10/0x10 [ 29.374536][ T292] ? trace_contention_end+0xdc/0x140 [ 29.374680][ T292] ? __mutex_lock+0x170/0xac0 [ 29.374987][ T292] ? find_held_lock+0x2c/0x110 [ 29.375128][ T292] ? rtnetlink_rcv_msg+0x2af/0xbf0 [ 29.375269][ T292] ? __pfx___mutex_lock+0x10/0x10 [ 29.375410][ T292] ? __pfx___lock_release+0x10/0x10 [ 29.375637][ T292] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 29.375781][ T292] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 29.375922][ T292] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 29.376064][ T292] ? hlock_class+0x4e/0x130 [ 29.376290][ T292] ? mark_lock+0x38/0x3e0 [ 29.376399][ T292] ? __lock_acquire+0xaf0/0x1570 [ 29.376540][ T292] netlink_rcv_skb+0x130/0x360 [ 29.376681][ T292] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 29.376821][ T292] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 29.377045][ T292] ? lock_acquire.part.0+0xeb/0x330 [ 29.377190][ T292] ? netlink_deliver_tap+0xc8/0x340 [ 29.377334][ T292] ? lock_acquire+0x32/0xc0 [ 29.377482][ T292] ? netlink_deliver_tap+0xc8/0x340 [ 29.377708][ T292] ? netlink_deliver_tap+0xc8/0x340 [ 29.377850][ T292] ? netlink_deliver_tap+0x149/0x340 [ 29.377991][ T292] netlink_unicast+0x449/0x710 [ 29.378133][ T292] ? __pfx_netlink_unicast+0x10/0x10 [ 29.378357][ T292] ? find_held_lock+0x2c/0x110 [ 29.378501][ T292] netlink_sendmsg+0x723/0xbe0 [ 29.378643][ T292] ? __pfx_netlink_sendmsg+0x10/0x10 [ 29.378785][ T292] ? __might_fault+0xc3/0x170 [ 29.379013][ T292] ? __import_iovec+0x35d/0x5d0 [ 29.379155][ T292] ____sys_sendmsg+0x7b2/0xa10 [ 29.379297][ T292] ? __pfx_____sys_sendmsg+0x10/0x10 [ 29.379436][ T292] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 29.379694][ T292] ? __pfx_validate_chain+0x10/0x10 [ 29.379841][ T292] ___sys_sendmsg+0xee/0x170 [ 29.379984][ T292] ? __pfx____sys_sendmsg+0x10/0x10 [ 29.380131][ T292] ? find_held_lock+0x2c/0x110 [ 29.380272][ T292] ? __lock_release+0x103/0x460 [ 29.380498][ T292] ? __debug_check_no_obj_freed+0x253/0x520 [ 29.380675][ T292] ? __pfx___lock_release+0x10/0x10 [ 29.380819][ T292] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 29.380961][ T292] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 29.381224][ T292] ? __fget_light+0x53/0x1e0 [ 29.381368][ T292] __sys_sendmsg+0xcd/0x170 [ 29.381509][ T292] ? __pfx___sys_sendmsg+0x10/0x10 [ 29.381655][ T292] do_syscall_64+0xc6/0x1e0 [ 29.381879][ T292] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 29.382054][ T292] RIP: 0033:0x7f393c1597b7 [ 29.382203][ T292] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 29.382804][ T292] RSP: 002b:00007ffc0ff45e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 29.383022][ T292] RAX: ffffffffffffffda RBX: 00007ffc0ff465b0 RCX: 00007f393c1597b7 [ 29.383321][ T292] RDX: 0000000000000000 RSI: 00007ffc0ff45ef0 RDI: 0000000000000005 [ 29.383531][ T292] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 29.383743][ T292] R10: 00007f393c017ef8 R11: 0000000000000246 R12: 0000000000000001 [ 29.384041][ T292] R13: 00000000660e534f R14: 0000000000495540 R15: 0000000000000000 [ 29.384256][ T292] [ 29.418037][ T292] ip (292) used greatest stack depth: 22592 bytes left