Warning: Permanently added '10.128.0.73' (ED25519) to the list of known hosts. executing program [ 44.647687][ T3487] [ 44.650031][ T3487] ===================================================== [ 44.656962][ T3487] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 44.664392][ T3487] 5.15.126-syzkaller #0 Not tainted [ 44.669575][ T3487] ----------------------------------------------------- [ 44.676477][ T3487] syz-executor426/3487 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 44.684524][ T3487] ffffffff8c9dfba0 (fs_reclaim){+.+.}-{0:0}, at: slab_pre_alloc_hook+0x22/0xc0 [ 44.693463][ T3487] [ 44.693463][ T3487] and this task is already holding: [ 44.700798][ T3487] ffffffff8da20808 (noop_qdisc.q.lock){+.-.}-{2:2}, at: netem_change+0x257/0x20c0 [ 44.709980][ T3487] which would create a new lock dependency: [ 44.715843][ T3487] (noop_qdisc.q.lock){+.-.}-{2:2} -> (fs_reclaim){+.+.}-{0:0} [ 44.723379][ T3487] [ 44.723379][ T3487] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 44.732830][ T3487] (noop_qdisc.q.lock){+.-.}-{2:2} [ 44.732845][ T3487] [ 44.732845][ T3487] ... which became SOFTIRQ-irq-safe at: [ 44.745604][ T3487] lock_acquire+0x1db/0x4f0 [ 44.750179][ T3487] _raw_spin_lock+0x2a/0x40 [ 44.754741][ T3487] net_tx_action+0x6c5/0x8e0 [ 44.759737][ T3487] __do_softirq+0x3b3/0x93a [ 44.764299][ T3487] do_softirq+0x162/0x240 [ 44.768702][ T3487] __local_bh_enable_ip+0x1b1/0x1f0 [ 44.773976][ T3487] dev_deactivate_many+0x524/0xbf0 [ 44.779172][ T3487] dev_deactivate+0x177/0x270 [ 44.783912][ T3487] linkwatch_do_dev+0x104/0x160 [ 44.788826][ T3487] __linkwatch_run_queue+0x4ca/0x7f0 [ 44.794168][ T3487] linkwatch_event+0x48/0x50 [ 44.798820][ T3487] process_one_work+0x8a1/0x10c0 [ 44.803823][ T3487] worker_thread+0xaca/0x1280 [ 44.808560][ T3487] kthread+0x3f6/0x4f0 [ 44.812696][ T3487] ret_from_fork+0x1f/0x30 [ 44.817180][ T3487] [ 44.817180][ T3487] to a SOFTIRQ-irq-unsafe lock: [ 44.824275][ T3487] (fs_reclaim){+.+.}-{0:0} [ 44.824296][ T3487] [ 44.824296][ T3487] ... which became SOFTIRQ-irq-unsafe at: [ 44.836620][ T3487] ... [ 44.836625][ T3487] lock_acquire+0x1db/0x4f0 [ 44.843751][ T3487] fs_reclaim_acquire+0x83/0x120 [ 44.848748][ T3487] slab_pre_alloc_hook+0x22/0xc0 [ 44.853741][ T3487] kmem_cache_alloc_trace+0x49/0x290 [ 44.859084][ T3487] wq_numa_init+0x122/0x49f [ 44.863646][ T3487] workqueue_init+0x18/0x5e1 [ 44.868293][ T3487] kernel_init_freeable+0x40a/0x5c5 [ 44.873549][ T3487] kernel_init+0x19/0x290 [ 44.877937][ T3487] ret_from_fork+0x1f/0x30 [ 44.882411][ T3487] [ 44.882411][ T3487] other info that might help us debug this: [ 44.882411][ T3487] [ 44.892608][ T3487] Possible interrupt unsafe locking scenario: [ 44.892608][ T3487] [ 44.900896][ T3487] CPU0 CPU1 [ 44.906229][ T3487] ---- ---- [ 44.911565][ T3487] lock(fs_reclaim); [ 44.915524][ T3487] local_irq_disable(); [ 44.922256][ T3487] lock(noop_qdisc.q.lock); [ 44.929346][ T3487] lock(fs_reclaim); [ 44.935834][ T3487] [ 44.939266][ T3487] lock(noop_qdisc.q.lock); [ 44.944003][ T3487] [ 44.944003][ T3487] *** DEADLOCK *** [ 44.944003][ T3487] [ 44.952116][ T3487] 2 locks held by syz-executor426/3487: [ 44.957629][ T3487] #0: ffffffff8d9e1148 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x94c/0xee0 [ 44.966991][ T3487] #1: ffffffff8da20808 (noop_qdisc.q.lock){+.-.}-{2:2}, at: netem_change+0x257/0x20c0 [ 44.976610][ T3487] [ 44.976610][ T3487] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 44.986985][ T3487] -> (noop_qdisc.q.lock){+.-.}-{2:2} { [ 44.992424][ T3487] HARDIRQ-ON-W at: [ 44.996376][ T3487] lock_acquire+0x1db/0x4f0 [ 45.002503][ T3487] _raw_spin_lock+0x2a/0x40 [ 45.008630][ T3487] __dev_queue_xmit+0xad6/0x3230 [ 45.015188][ T3487] tx+0x64/0x100 [ 45.020358][ T3487] kthread+0x234/0x440 [ 45.026046][ T3487] kthread+0x3f6/0x4f0 [ 45.031738][ T3487] ret_from_fork+0x1f/0x30 [ 45.037777][ T3487] IN-SOFTIRQ-W at: [ 45.041729][ T3487] lock_acquire+0x1db/0x4f0 [ 45.047854][ T3487] _raw_spin_lock+0x2a/0x40 [ 45.053982][ T3487] net_tx_action+0x6c5/0x8e0 [ 45.060197][ T3487] __do_softirq+0x3b3/0x93a [ 45.066324][ T3487] do_softirq+0x162/0x240 [ 45.072288][ T3487] __local_bh_enable_ip+0x1b1/0x1f0 [ 45.079108][ T3487] dev_deactivate_many+0x524/0xbf0 [ 45.085948][ T3487] dev_deactivate+0x177/0x270 [ 45.092247][ T3487] linkwatch_do_dev+0x104/0x160 [ 45.098720][ T3487] __linkwatch_run_queue+0x4ca/0x7f0 [ 45.105627][ T3487] linkwatch_event+0x48/0x50 [ 45.111837][ T3487] process_one_work+0x8a1/0x10c0 [ 45.118396][ T3487] worker_thread+0xaca/0x1280 [ 45.124695][ T3487] kthread+0x3f6/0x4f0 [ 45.130384][ T3487] ret_from_fork+0x1f/0x30 [ 45.136426][ T3487] INITIAL USE at: [ 45.140293][ T3487] lock_acquire+0x1db/0x4f0 [ 45.146332][ T3487] _raw_spin_lock+0x2a/0x40 [ 45.152371][ T3487] __dev_queue_xmit+0xad6/0x3230 [ 45.158843][ T3487] tx+0x64/0x100 [ 45.163930][ T3487] kthread+0x234/0x440 [ 45.169536][ T3487] kthread+0x3f6/0x4f0 [ 45.175140][ T3487] ret_from_fork+0x1f/0x30 [ 45.181099][ T3487] } [ 45.183591][ T3487] ... key at: [] noop_qdisc+0x108/0x320 [ 45.191297][ T3487] [ 45.191297][ T3487] the dependencies between the lock to be acquired [ 45.191302][ T3487] and SOFTIRQ-irq-unsafe lock: [ 45.204791][ T3487] -> (fs_reclaim){+.+.}-{0:0} { [ 45.209628][ T3487] HARDIRQ-ON-W at: [ 45.213588][ T3487] lock_acquire+0x1db/0x4f0 [ 45.219717][ T3487] fs_reclaim_acquire+0x83/0x120 [ 45.226277][ T3487] slab_pre_alloc_hook+0x22/0xc0 [ 45.232926][ T3487] kmem_cache_alloc_trace+0x49/0x290 [ 45.239836][ T3487] wq_numa_init+0x122/0x49f [ 45.245961][ T3487] workqueue_init+0x18/0x5e1 [ 45.252191][ T3487] kernel_init_freeable+0x40a/0x5c5 [ 45.259014][ T3487] kernel_init+0x19/0x290 [ 45.264966][ T3487] ret_from_fork+0x1f/0x30 [ 45.271007][ T3487] SOFTIRQ-ON-W at: [ 45.274961][ T3487] lock_acquire+0x1db/0x4f0 [ 45.281089][ T3487] fs_reclaim_acquire+0x83/0x120 [ 45.287650][ T3487] slab_pre_alloc_hook+0x22/0xc0 [ 45.294218][ T3487] kmem_cache_alloc_trace+0x49/0x290 [ 45.301125][ T3487] wq_numa_init+0x122/0x49f [ 45.307252][ T3487] workqueue_init+0x18/0x5e1 [ 45.313465][ T3487] kernel_init_freeable+0x40a/0x5c5 [ 45.320286][ T3487] kernel_init+0x19/0x290 [ 45.326235][ T3487] ret_from_fork+0x1f/0x30 [ 45.332272][ T3487] INITIAL USE at: [ 45.336137][ T3487] lock_acquire+0x1db/0x4f0 [ 45.342173][ T3487] fs_reclaim_acquire+0x83/0x120 [ 45.348647][ T3487] slab_pre_alloc_hook+0x22/0xc0 [ 45.355122][ T3487] kmem_cache_alloc_trace+0x49/0x290 [ 45.361940][ T3487] wq_numa_init+0x122/0x49f [ 45.367978][ T3487] workqueue_init+0x18/0x5e1 [ 45.374104][ T3487] kernel_init_freeable+0x40a/0x5c5 [ 45.380836][ T3487] kernel_init+0x19/0x290 [ 45.386703][ T3487] ret_from_fork+0x1f/0x30 [ 45.392656][ T3487] } [ 45.395132][ T3487] ... key at: [] __fs_reclaim_map+0x0/0x160 [ 45.403085][ T3487] ... acquired at: [ 45.406866][ T3487] lock_acquire+0x1db/0x4f0 [ 45.411525][ T3487] fs_reclaim_acquire+0x83/0x120 [ 45.416610][ T3487] slab_pre_alloc_hook+0x22/0xc0 [ 45.421693][ T3487] __kmalloc_node+0x71/0x390 [ 45.426428][ T3487] kvmalloc_node+0x80/0x140 [ 45.431076][ T3487] get_dist_table+0x83/0x2c0 [ 45.435810][ T3487] netem_change+0xa05/0x20c0 [ 45.440546][ T3487] netem_init+0x58/0xb0 [ 45.444843][ T3487] qdisc_create+0x8ae/0x1390 [ 45.449579][ T3487] tc_modify_qdisc+0xac5/0x1710 [ 45.454581][ T3487] rtnetlink_rcv_msg+0x993/0xee0 [ 45.459663][ T3487] netlink_rcv_skb+0x1cf/0x410 [ 45.464574][ T3487] netlink_unicast+0x7b6/0x980 [ 45.469508][ T3487] netlink_sendmsg+0xa30/0xd60 [ 45.474442][ T3487] ____sys_sendmsg+0x59e/0x8f0 [ 45.479366][ T3487] ___sys_sendmsg+0x252/0x2e0 [ 45.484189][ T3487] __se_sys_sendmsg+0x19a/0x260 [ 45.489185][ T3487] do_syscall_64+0x3d/0xb0 [ 45.493747][ T3487] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 45.499788][ T3487] [ 45.502083][ T3487] [ 45.502083][ T3487] stack backtrace: [ 45.507942][ T3487] CPU: 1 PID: 3487 Comm: syz-executor426 Not tainted 5.15.126-syzkaller #0 [ 45.516497][ T3487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 45.526524][ T3487] Call Trace: [ 45.529783][ T3487] [ 45.532695][ T3487] dump_stack_lvl+0x1e3/0x2cb [ 45.537358][ T3487] ? io_uring_drop_tctx_refs+0x19d/0x19d [ 45.542961][ T3487] ? panic+0x84d/0x84d [ 45.547001][ T3487] ? print_shortest_lock_dependencies+0xee/0x150 [ 45.553307][ T3487] validate_chain+0x4cfe/0x58b0 [ 45.558151][ T3487] ? reacquire_held_locks+0x660/0x660 [ 45.563509][ T3487] ? validate_chain+0x112/0x58b0 [ 45.568432][ T3487] ? reacquire_held_locks+0x660/0x660 [ 45.573786][ T3487] ? mark_lock+0x98/0x340 [ 45.578094][ T3487] __lock_acquire+0x1295/0x1ff0 [ 45.582926][ T3487] lock_acquire+0x1db/0x4f0 [ 45.587427][ T3487] ? slab_pre_alloc_hook+0x22/0xc0 [ 45.592516][ T3487] ? read_lock_is_recursive+0x10/0x10 [ 45.597866][ T3487] fs_reclaim_acquire+0x83/0x120 [ 45.602796][ T3487] ? slab_pre_alloc_hook+0x22/0xc0 [ 45.607907][ T3487] slab_pre_alloc_hook+0x22/0xc0 [ 45.612835][ T3487] __kmalloc_node+0x71/0x390 [ 45.617403][ T3487] ? kvmalloc_node+0x80/0x140 [ 45.622055][ T3487] ? __bpf_trace_softirq+0x10/0x10 [ 45.627140][ T3487] kvmalloc_node+0x80/0x140 [ 45.631619][ T3487] get_dist_table+0x83/0x2c0 [ 45.636185][ T3487] netem_change+0xa05/0x20c0 [ 45.640753][ T3487] ? netem_destroy+0xb0/0xb0 [ 45.645313][ T3487] ? debug_object_init+0x10/0x10 [ 45.650225][ T3487] ? memset+0x1f/0x40 [ 45.654180][ T3487] ? lockdep_init_map_type+0x9d/0x8d0 [ 45.659553][ T3487] ? memset+0x1f/0x40 [ 45.663532][ T3487] ? __hrtimer_init+0x181/0x260 [ 45.668366][ T3487] netem_init+0x58/0xb0 [ 45.672495][ T3487] ? qdisc_peek_dequeued+0x220/0x220 [ 45.677752][ T3487] qdisc_create+0x8ae/0x1390 [ 45.682318][ T3487] ? qdisc_notify+0x380/0x380 [ 45.686975][ T3487] ? apparmor_capable+0x12e/0x190 [ 45.691996][ T3487] tc_modify_qdisc+0xac5/0x1710 [ 45.696850][ T3487] ? rcu_lock_release+0x20/0x20 [ 45.701699][ T3487] ? rcu_lock_release+0x20/0x20 [ 45.706541][ T3487] rtnetlink_rcv_msg+0x993/0xee0 [ 45.711459][ T3487] ? reacquire_held_locks+0x660/0x660 [ 45.716807][ T3487] ? rtnetlink_bind+0x80/0x80 [ 45.721455][ T3487] ? is_bpf_text_address+0x24f/0x260 [ 45.726712][ T3487] ? stack_trace_save+0x1c0/0x1c0 [ 45.731715][ T3487] ? __kernel_text_address+0x94/0x100 [ 45.737068][ T3487] ? unwind_get_return_address+0x49/0x80 [ 45.742683][ T3487] ? arch_stack_walk+0xf3/0x140 [ 45.747520][ T3487] ? mark_lock+0x98/0x340 [ 45.751824][ T3487] ? mark_lock+0x98/0x340 [ 45.756140][ T3487] ? __lock_acquire+0x1295/0x1ff0 [ 45.761168][ T3487] netlink_rcv_skb+0x1cf/0x410 [ 45.765919][ T3487] ? rtnetlink_bind+0x80/0x80 [ 45.770587][ T3487] ? netlink_ack+0xb10/0xb10 [ 45.775168][ T3487] netlink_unicast+0x7b6/0x980 [ 45.779918][ T3487] ? netlink_detachskb+0x90/0x90 [ 45.784837][ T3487] ? 0xffffffff81000000 [ 45.788969][ T3487] ? __check_object_size+0x300/0x410 [ 45.794227][ T3487] ? bpf_lsm_netlink_send+0x5/0x10 [ 45.799316][ T3487] netlink_sendmsg+0xa30/0xd60 [ 45.804054][ T3487] ? netlink_getsockopt+0x5b0/0x5b0 [ 45.809232][ T3487] ? aa_sock_msg_perm+0x91/0x150 [ 45.814146][ T3487] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 45.819416][ T3487] ? security_socket_sendmsg+0x7d/0xa0 [ 45.824845][ T3487] ? netlink_getsockopt+0x5b0/0x5b0 [ 45.830018][ T3487] ____sys_sendmsg+0x59e/0x8f0 [ 45.834753][ T3487] ? iovec_from_user+0x300/0x390 [ 45.839687][ T3487] ? __sys_sendmsg_sock+0x30/0x30 [ 45.844686][ T3487] ___sys_sendmsg+0x252/0x2e0 [ 45.849337][ T3487] ? __sys_sendmsg+0x260/0x260 [ 45.854073][ T3487] ? __lock_acquire+0x1295/0x1ff0 [ 45.859080][ T3487] ? read_lock_is_recursive+0x10/0x10 [ 45.864433][ T3487] ? __context_tracking_exit+0x4c/0x80 [ 45.869970][ T3487] ? __fdget+0x158/0x220 [ 45.874207][ T3487] __se_sys_sendmsg+0x19a/0x260 [ 45.879062][ T3487] ? __x64_sys_sendmsg+0x80/0x80 [ 45.883997][ T3487] ? syscall_enter_from_user_mode+0x2e/0x230 [ 45.889957][ T3487] ? lockdep_hardirqs_on+0x94/0x130 [ 45.895134][ T3487] ? syscall_enter_from_user_mode+0x2e/0x230 [ 45.901090][ T3487] do_syscall_64+0x3d/0xb0 [ 45.905489][ T3487] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 45.911358][ T3487] RIP: 0033:0x7f73facda8b9 [ 45.915751][ T3487] Code: 48 83 c4 28 c3 e8 27 18 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 45.935430][ T3487] RSP: 002b:00007ffde1ec5b28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 45.943833][ T3487] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f73facda8b9 [ 45.951792][ T3487] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003 [ 45.959754][ T3487] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffde1ec5ba0 [ 45.967705][ T3487] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 45.975661][ T3487] R13: 00007ffde1ec5d28 R14: 0000000000000001 R15: 0000000000000001 [ 45.983612][ T3487] [ 45.986742][ T3487] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:209 [ 45.996227][ T3487] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3487, name: syz-executor426 [ 46.005697][ T3487] INFO: lockdep is turned off. [ 46.010450][ T3487] Preemption disabled at: [ 46.010455][ T3487] [<0000000000000000>] 0x0 [ 46.019183][ T3487] CPU: 1 PID: 3487 Comm: syz-executor426 Not tainted 5.15.126-syzkaller #0 [ 46.027830][ T3487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 46.037861][ T3487] Call Trace: [ 46.041119][ T3487] [ 46.044026][ T3487] dump_stack_lvl+0x1e3/0x2cb [ 46.048683][ T3487] ? io_uring_drop_tctx_refs+0x19d/0x19d [ 46.054293][ T3487] ? panic+0x84d/0x84d [ 46.058335][ T3487] ? rcu_is_watching+0x11/0xa0 [ 46.063070][ T3487] ? rcu_is_watching+0x11/0xa0 [ 46.067807][ T3487] ___might_sleep+0x547/0x6a0 [ 46.072489][ T3487] ? __might_sleep+0xc0/0xc0 [ 46.077060][ T3487] slab_pre_alloc_hook+0x44/0xc0 [ 46.081974][ T3487] __kmalloc_node+0x71/0x390 [ 46.086537][ T3487] ? kvmalloc_node+0x80/0x140 [ 46.091187][ T3487] ? __bpf_trace_softirq+0x10/0x10 [ 46.096271][ T3487] kvmalloc_node+0x80/0x140 [ 46.100749][ T3487] get_dist_table+0x83/0x2c0 [ 46.105415][ T3487] netem_change+0xa05/0x20c0 [ 46.110001][ T3487] ? netem_destroy+0xb0/0xb0 [ 46.114577][ T3487] ? debug_object_init+0x10/0x10 [ 46.119494][ T3487] ? memset+0x1f/0x40 [ 46.123459][ T3487] ? lockdep_init_map_type+0x9d/0x8d0 [ 46.128819][ T3487] ? memset+0x1f/0x40 [ 46.132870][ T3487] ? __hrtimer_init+0x181/0x260 [ 46.137723][ T3487] netem_init+0x58/0xb0 [ 46.141871][ T3487] ? qdisc_peek_dequeued+0x220/0x220 [ 46.147133][ T3487] qdisc_create+0x8ae/0x1390 [ 46.151699][ T3487] ? qdisc_notify+0x380/0x380 [ 46.156354][ T3487] ? apparmor_capable+0x12e/0x190 [ 46.161357][ T3487] tc_modify_qdisc+0xac5/0x1710 [ 46.166187][ T3487] ? rcu_lock_release+0x20/0x20 [ 46.171018][ T3487] ? rcu_lock_release+0x20/0x20 [ 46.175843][ T3487] rtnetlink_rcv_msg+0x993/0xee0 [ 46.180763][ T3487] ? reacquire_held_locks+0x660/0x660 [ 46.186110][ T3487] ? rtnetlink_bind+0x80/0x80 [ 46.190760][ T3487] ? is_bpf_text_address+0x24f/0x260 [ 46.196017][ T3487] ? stack_trace_save+0x1c0/0x1c0 [ 46.201018][ T3487] ? __kernel_text_address+0x94/0x100 [ 46.206362][ T3487] ? unwind_get_return_address+0x49/0x80 [ 46.211967][ T3487] ? arch_stack_walk+0xf3/0x140 [ 46.216793][ T3487] ? mark_lock+0x98/0x340 [ 46.221098][ T3487] ? mark_lock+0x98/0x340 [ 46.225400][ T3487] ? __lock_acquire+0x1295/0x1ff0 [ 46.230415][ T3487] netlink_rcv_skb+0x1cf/0x410 [ 46.235157][ T3487] ? rtnetlink_bind+0x80/0x80 [ 46.239805][ T3487] ? netlink_ack+0xb10/0xb10 [ 46.244373][ T3487] netlink_unicast+0x7b6/0x980 [ 46.249111][ T3487] ? netlink_detachskb+0x90/0x90 [ 46.254019][ T3487] ? 0xffffffff81000000 [ 46.258145][ T3487] ? __check_object_size+0x300/0x410 [ 46.263402][ T3487] ? bpf_lsm_netlink_send+0x5/0x10 [ 46.268492][ T3487] netlink_sendmsg+0xa30/0xd60 [ 46.273235][ T3487] ? netlink_getsockopt+0x5b0/0x5b0 [ 46.278413][ T3487] ? aa_sock_msg_perm+0x91/0x150 [ 46.283325][ T3487] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 46.288581][ T3487] ? security_socket_sendmsg+0x7d/0xa0 [ 46.294011][ T3487] ? netlink_getsockopt+0x5b0/0x5b0 [ 46.299191][ T3487] ____sys_sendmsg+0x59e/0x8f0 [ 46.303946][ T3487] ? iovec_from_user+0x300/0x390 [ 46.308872][ T3487] ? __sys_sendmsg_sock+0x30/0x30 [ 46.313876][ T3487] ___sys_sendmsg+0x252/0x2e0 [ 46.318531][ T3487] ? __sys_sendmsg+0x260/0x260 [ 46.323269][ T3487] ? __lock_acquire+0x1295/0x1ff0 [ 46.328284][ T3487] ? read_lock_is_recursive+0x10/0x10 [ 46.333649][ T3487] ? __context_tracking_exit+0x4c/0x80 [ 46.339120][ T3487] ? __fdget+0x158/0x220 [ 46.343343][ T3487] __se_sys_sendmsg+0x19a/0x260 [ 46.348173][ T3487] ? __x64_sys_sendmsg+0x80/0x80 [ 46.353086][ T3487] ? syscall_enter_from_user_mode+0x2e/0x230 [ 46.359050][ T3487] ? lockdep_hardirqs_on+0x94/0x130 [ 46.364226][ T3487] ? syscall_enter_from_user_mode+0x2e/0x230 [ 46.370195][ T3487] do_syscall_64+0x3d/0xb0 [ 46.374602][ T3487] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 46.380477][ T3487] RIP: 0033:0x7f73facda8b9 [ 46.384881][ T3487] Code: 48 83 c4 28 c3 e8 27 18 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 46.404477][ T3487] RSP: 002b:00007ffde1ec5b28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 46.412874][ T3487] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f73facda8b9 [ 46.420821][ T3487] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003 [ 46.428768][ T3487] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffde1ec5ba0 [ 46.436716][ T3487] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 46.444663][ T3487] R13: 00007ffde1ec5d28 R14: 0000000000000001 R15: 0000000000000001 [ 46.452633][ T3487]