Warning: Permanently added '10.128.0.113' (ED25519) to the list of known hosts. executing program [ 52.760711][ T3487] [ 52.763079][ T3487] ===================================================== [ 52.769997][ T3487] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 52.777437][ T3487] 5.15.126-syzkaller #0 Not tainted [ 52.782617][ T3487] ----------------------------------------------------- [ 52.789556][ T3487] syz-executor846/3487 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 52.797614][ T3487] ffffffff8c9dfba0 (fs_reclaim){+.+.}-{0:0}, at: slab_pre_alloc_hook+0x22/0xc0 [ 52.806577][ T3487] [ 52.806577][ T3487] and this task is already holding: [ 52.813922][ T3487] ffffffff8da20808 (noop_qdisc.q.lock){+.-.}-{2:2}, at: netem_change+0x257/0x20c0 [ 52.823149][ T3487] which would create a new lock dependency: [ 52.829108][ T3487] (noop_qdisc.q.lock){+.-.}-{2:2} -> (fs_reclaim){+.+.}-{0:0} [ 52.836663][ T3487] [ 52.836663][ T3487] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 52.846094][ T3487] (noop_qdisc.q.lock){+.-.}-{2:2} [ 52.846113][ T3487] [ 52.846113][ T3487] ... which became SOFTIRQ-irq-safe at: [ 52.858918][ T3487] lock_acquire+0x1db/0x4f0 [ 52.863504][ T3487] _raw_spin_lock+0x2a/0x40 [ 52.868115][ T3487] net_tx_action+0x6c5/0x8e0 [ 52.872798][ T3487] __do_softirq+0x3b3/0x93a [ 52.877391][ T3487] do_softirq+0x162/0x240 [ 52.881803][ T3487] __local_bh_enable_ip+0x1b1/0x1f0 [ 52.887100][ T3487] dev_deactivate_many+0x524/0xbf0 [ 52.892288][ T3487] dev_deactivate+0x177/0x270 [ 52.897045][ T3487] linkwatch_do_dev+0x104/0x160 [ 52.901972][ T3487] __linkwatch_run_queue+0x4ca/0x7f0 [ 52.907338][ T3487] linkwatch_event+0x48/0x50 [ 52.912017][ T3487] process_one_work+0x8a1/0x10c0 [ 52.917028][ T3487] worker_thread+0xaca/0x1280 [ 52.921803][ T3487] kthread+0x3f6/0x4f0 [ 52.925968][ T3487] ret_from_fork+0x1f/0x30 [ 52.930460][ T3487] [ 52.930460][ T3487] to a SOFTIRQ-irq-unsafe lock: [ 52.937460][ T3487] (fs_reclaim){+.+.}-{0:0} [ 52.937481][ T3487] [ 52.937481][ T3487] ... which became SOFTIRQ-irq-unsafe at: [ 52.949837][ T3487] ... [ 52.949842][ T3487] lock_acquire+0x1db/0x4f0 [ 52.956984][ T3487] fs_reclaim_acquire+0x83/0x120 [ 52.962003][ T3487] slab_pre_alloc_hook+0x22/0xc0 [ 52.967104][ T3487] kmem_cache_alloc_trace+0x49/0x290 [ 52.972550][ T3487] wq_numa_init+0x122/0x49f [ 52.977134][ T3487] workqueue_init+0x18/0x5e1 [ 52.981797][ T3487] kernel_init_freeable+0x40a/0x5c5 [ 52.987075][ T3487] kernel_init+0x19/0x290 [ 52.991480][ T3487] ret_from_fork+0x1f/0x30 [ 52.995973][ T3487] [ 52.995973][ T3487] other info that might help us debug this: [ 52.995973][ T3487] [ 53.006185][ T3487] Possible interrupt unsafe locking scenario: [ 53.006185][ T3487] [ 53.014489][ T3487] CPU0 CPU1 [ 53.019839][ T3487] ---- ---- [ 53.025192][ T3487] lock(fs_reclaim); [ 53.029163][ T3487] local_irq_disable(); [ 53.035903][ T3487] lock(noop_qdisc.q.lock); [ 53.042999][ T3487] lock(fs_reclaim); [ 53.049596][ T3487] [ 53.053034][ T3487] lock(noop_qdisc.q.lock); [ 53.057792][ T3487] [ 53.057792][ T3487] *** DEADLOCK *** [ 53.057792][ T3487] [ 53.065930][ T3487] 2 locks held by syz-executor846/3487: [ 53.071485][ T3487] #0: ffffffff8d9e1148 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x94c/0xee0 [ 53.081052][ T3487] #1: ffffffff8da20808 (noop_qdisc.q.lock){+.-.}-{2:2}, at: netem_change+0x257/0x20c0 [ 53.090710][ T3487] [ 53.090710][ T3487] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 53.101116][ T3487] -> (noop_qdisc.q.lock){+.-.}-{2:2} { [ 53.106588][ T3487] HARDIRQ-ON-W at: [ 53.110558][ T3487] lock_acquire+0x1db/0x4f0 [ 53.116706][ T3487] _raw_spin_lock+0x2a/0x40 [ 53.122855][ T3487] __dev_queue_xmit+0xad6/0x3230 [ 53.129523][ T3487] tx+0x64/0x100 [ 53.134756][ T3487] kthread+0x234/0x440 [ 53.140647][ T3487] kthread+0x3f6/0x4f0 [ 53.148704][ T3487] ret_from_fork+0x1f/0x30 [ 53.154950][ T3487] IN-SOFTIRQ-W at: [ 53.160172][ T3487] lock_acquire+0x1db/0x4f0 [ 53.166519][ T3487] _raw_spin_lock+0x2a/0x40 [ 53.172861][ T3487] net_tx_action+0x6c5/0x8e0 [ 53.179294][ T3487] __do_softirq+0x3b3/0x93a [ 53.185449][ T3487] do_softirq+0x162/0x240 [ 53.191793][ T3487] __local_bh_enable_ip+0x1b1/0x1f0 [ 53.198828][ T3487] dev_deactivate_many+0x524/0xbf0 [ 53.205588][ T3487] dev_deactivate+0x177/0x270 [ 53.211908][ T3487] linkwatch_do_dev+0x104/0x160 [ 53.218413][ T3487] __linkwatch_run_queue+0x4ca/0x7f0 [ 53.225476][ T3487] linkwatch_event+0x48/0x50 [ 53.231740][ T3487] process_one_work+0x8a1/0x10c0 [ 53.238322][ T3487] worker_thread+0xaca/0x1280 [ 53.244642][ T3487] kthread+0x3f6/0x4f0 [ 53.250522][ T3487] ret_from_fork+0x1f/0x30 [ 53.256766][ T3487] INITIAL USE at: [ 53.260667][ T3487] lock_acquire+0x1db/0x4f0 [ 53.266741][ T3487] _raw_spin_lock+0x2a/0x40 [ 53.273016][ T3487] __dev_queue_xmit+0xad6/0x3230 [ 53.279627][ T3487] tx+0x64/0x100 [ 53.284840][ T3487] kthread+0x234/0x440 [ 53.290644][ T3487] kthread+0x3f6/0x4f0 [ 53.296278][ T3487] ret_from_fork+0x1f/0x30 [ 53.302492][ T3487] } [ 53.304982][ T3487] ... key at: [] noop_qdisc+0x108/0x320 [ 53.312620][ T3487] [ 53.312620][ T3487] the dependencies between the lock to be acquired [ 53.312628][ T3487] and SOFTIRQ-irq-unsafe lock: [ 53.326215][ T3487] -> (fs_reclaim){+.+.}-{0:0} { [ 53.331082][ T3487] HARDIRQ-ON-W at: [ 53.335059][ T3487] lock_acquire+0x1db/0x4f0 [ 53.341226][ T3487] fs_reclaim_acquire+0x83/0x120 [ 53.347813][ T3487] slab_pre_alloc_hook+0x22/0xc0 [ 53.354398][ T3487] kmem_cache_alloc_trace+0x49/0x290 [ 53.361326][ T3487] wq_numa_init+0x122/0x49f [ 53.367571][ T3487] workqueue_init+0x18/0x5e1 [ 53.373818][ T3487] kernel_init_freeable+0x40a/0x5c5 [ 53.380656][ T3487] kernel_init+0x19/0x290 [ 53.386710][ T3487] ret_from_fork+0x1f/0x30 [ 53.392768][ T3487] SOFTIRQ-ON-W at: [ 53.396736][ T3487] lock_acquire+0x1db/0x4f0 [ 53.402894][ T3487] fs_reclaim_acquire+0x83/0x120 [ 53.409473][ T3487] slab_pre_alloc_hook+0x22/0xc0 [ 53.416051][ T3487] kmem_cache_alloc_trace+0x49/0x290 [ 53.423065][ T3487] wq_numa_init+0x122/0x49f [ 53.429210][ T3487] workqueue_init+0x18/0x5e1 [ 53.435455][ T3487] kernel_init_freeable+0x40a/0x5c5 [ 53.442290][ T3487] kernel_init+0x19/0x290 [ 53.448361][ T3487] ret_from_fork+0x1f/0x30 [ 53.454416][ T3487] INITIAL USE at: [ 53.458297][ T3487] lock_acquire+0x1db/0x4f0 [ 53.464354][ T3487] fs_reclaim_acquire+0x83/0x120 [ 53.470845][ T3487] slab_pre_alloc_hook+0x22/0xc0 [ 53.477338][ T3487] kmem_cache_alloc_trace+0x49/0x290 [ 53.484174][ T3487] wq_numa_init+0x122/0x49f [ 53.490335][ T3487] workqueue_init+0x18/0x5e1 [ 53.496565][ T3487] kernel_init_freeable+0x40a/0x5c5 [ 53.503319][ T3487] kernel_init+0x19/0x290 [ 53.509200][ T3487] ret_from_fork+0x1f/0x30 [ 53.515172][ T3487] } [ 53.517655][ T3487] ... key at: [] __fs_reclaim_map+0x0/0x160 [ 53.525626][ T3487] ... acquired at: [ 53.529425][ T3487] lock_acquire+0x1db/0x4f0 [ 53.534091][ T3487] fs_reclaim_acquire+0x83/0x120 [ 53.539215][ T3487] slab_pre_alloc_hook+0x22/0xc0 [ 53.544316][ T3487] __kmalloc_node+0x71/0x390 [ 53.549155][ T3487] kvmalloc_node+0x80/0x140 [ 53.553821][ T3487] get_dist_table+0x83/0x2c0 [ 53.558570][ T3487] netem_change+0xa05/0x20c0 [ 53.563339][ T3487] netem_init+0x58/0xb0 [ 53.567709][ T3487] qdisc_create+0x8ae/0x1390 [ 53.572476][ T3487] tc_modify_qdisc+0xac5/0x1710 [ 53.577488][ T3487] rtnetlink_rcv_msg+0x993/0xee0 [ 53.582587][ T3487] netlink_rcv_skb+0x1cf/0x410 [ 53.587512][ T3487] netlink_unicast+0x7b6/0x980 [ 53.592437][ T3487] netlink_sendmsg+0xa30/0xd60 [ 53.597364][ T3487] ____sys_sendmsg+0x59e/0x8f0 [ 53.602289][ T3487] ___sys_sendmsg+0x252/0x2e0 [ 53.607128][ T3487] __se_sys_sendmsg+0x19a/0x260 [ 53.612140][ T3487] do_syscall_64+0x3d/0xb0 [ 53.616805][ T3487] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 53.622871][ T3487] [ 53.625179][ T3487] [ 53.625179][ T3487] stack backtrace: [ 53.631052][ T3487] CPU: 1 PID: 3487 Comm: syz-executor846 Not tainted 5.15.126-syzkaller #0 [ 53.639713][ T3487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 53.649863][ T3487] Call Trace: [ 53.653134][ T3487] [ 53.656055][ T3487] dump_stack_lvl+0x1e3/0x2cb [ 53.660728][ T3487] ? io_uring_drop_tctx_refs+0x19d/0x19d [ 53.666362][ T3487] ? panic+0x84d/0x84d [ 53.670521][ T3487] ? print_shortest_lock_dependencies+0xee/0x150 [ 53.676939][ T3487] validate_chain+0x4cfe/0x58b0 [ 53.682112][ T3487] ? reacquire_held_locks+0x660/0x660 [ 53.687599][ T3487] ? validate_chain+0x112/0x58b0 [ 53.692562][ T3487] ? reacquire_held_locks+0x660/0x660 [ 53.697962][ T3487] ? mark_lock+0x98/0x340 [ 53.702286][ T3487] __lock_acquire+0x1295/0x1ff0 [ 53.707144][ T3487] lock_acquire+0x1db/0x4f0 [ 53.711719][ T3487] ? slab_pre_alloc_hook+0x22/0xc0 [ 53.716832][ T3487] ? read_lock_is_recursive+0x10/0x10 [ 53.722212][ T3487] fs_reclaim_acquire+0x83/0x120 [ 53.727150][ T3487] ? slab_pre_alloc_hook+0x22/0xc0 [ 53.732253][ T3487] slab_pre_alloc_hook+0x22/0xc0 [ 53.737184][ T3487] __kmalloc_node+0x71/0x390 [ 53.741782][ T3487] ? kvmalloc_node+0x80/0x140 [ 53.746449][ T3487] ? __bpf_trace_softirq+0x10/0x10 [ 53.751555][ T3487] kvmalloc_node+0x80/0x140 [ 53.756184][ T3487] get_dist_table+0x83/0x2c0 [ 53.760771][ T3487] netem_change+0xa05/0x20c0 [ 53.765356][ T3487] ? netem_destroy+0xb0/0xb0 [ 53.770196][ T3487] ? debug_object_init+0x10/0x10 [ 53.775124][ T3487] ? memset+0x1f/0x40 [ 53.779095][ T3487] ? lockdep_init_map_type+0x9d/0x8d0 [ 53.784469][ T3487] ? memset+0x1f/0x40 [ 53.788441][ T3487] ? __hrtimer_init+0x181/0x260 [ 53.793292][ T3487] netem_init+0x58/0xb0 [ 53.797456][ T3487] ? qdisc_peek_dequeued+0x220/0x220 [ 53.802731][ T3487] qdisc_create+0x8ae/0x1390 [ 53.807751][ T3487] ? qdisc_notify+0x380/0x380 [ 53.812416][ T3487] ? apparmor_capable+0x12e/0x190 [ 53.817447][ T3487] tc_modify_qdisc+0xac5/0x1710 [ 53.822300][ T3487] ? rcu_lock_release+0x20/0x20 [ 53.827333][ T3487] ? rcu_lock_release+0x20/0x20 [ 53.832176][ T3487] rtnetlink_rcv_msg+0x993/0xee0 [ 53.837316][ T3487] ? reacquire_held_locks+0x660/0x660 [ 53.842687][ T3487] ? rtnetlink_bind+0x80/0x80 [ 53.847352][ T3487] ? is_bpf_text_address+0x24f/0x260 [ 53.852627][ T3487] ? stack_trace_save+0x1c0/0x1c0 [ 53.857639][ T3487] ? __kernel_text_address+0x94/0x100 [ 53.863027][ T3487] ? unwind_get_return_address+0x49/0x80 [ 53.868691][ T3487] ? arch_stack_walk+0xf3/0x140 [ 53.873633][ T3487] ? mark_lock+0x98/0x340 [ 53.877954][ T3487] ? mark_lock+0x98/0x340 [ 53.882274][ T3487] ? __lock_acquire+0x1295/0x1ff0 [ 53.887308][ T3487] netlink_rcv_skb+0x1cf/0x410 [ 53.892094][ T3487] ? rtnetlink_bind+0x80/0x80 [ 53.896934][ T3487] ? netlink_ack+0xb10/0xb10 [ 53.901518][ T3487] netlink_unicast+0x7b6/0x980 [ 53.906277][ T3487] ? netlink_detachskb+0x90/0x90 [ 53.911204][ T3487] ? 0xffffffff81000000 [ 53.915347][ T3487] ? __check_object_size+0x300/0x410 [ 53.920620][ T3487] ? bpf_lsm_netlink_send+0x5/0x10 [ 53.925725][ T3487] netlink_sendmsg+0xa30/0xd60 [ 53.930491][ T3487] ? netlink_getsockopt+0x5b0/0x5b0 [ 53.935778][ T3487] ? aa_sock_msg_perm+0x91/0x150 [ 53.940710][ T3487] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 53.946071][ T3487] ? security_socket_sendmsg+0x7d/0xa0 [ 53.951653][ T3487] ? netlink_getsockopt+0x5b0/0x5b0 [ 53.956859][ T3487] ____sys_sendmsg+0x59e/0x8f0 [ 53.961628][ T3487] ? iovec_from_user+0x300/0x390 [ 53.966562][ T3487] ? __sys_sendmsg_sock+0x30/0x30 [ 53.971584][ T3487] ___sys_sendmsg+0x252/0x2e0 [ 53.976256][ T3487] ? __sys_sendmsg+0x260/0x260 [ 53.981023][ T3487] ? __lock_acquire+0x1295/0x1ff0 [ 53.986068][ T3487] ? read_lock_is_recursive+0x10/0x10 [ 53.991639][ T3487] ? __context_tracking_exit+0x4c/0x80 [ 53.998925][ T3487] ? __fdget+0x158/0x220 [ 54.003180][ T3487] __se_sys_sendmsg+0x19a/0x260 [ 54.008051][ T3487] ? __x64_sys_sendmsg+0x80/0x80 [ 54.014288][ T3487] ? syscall_enter_from_user_mode+0x2e/0x230 [ 54.020261][ T3487] ? lockdep_hardirqs_on+0x94/0x130 [ 54.025634][ T3487] ? syscall_enter_from_user_mode+0x2e/0x230 [ 54.031616][ T3487] do_syscall_64+0x3d/0xb0 [ 54.036044][ T3487] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 54.041950][ T3487] RIP: 0033:0x7fa0b710e8b9 [ 54.046906][ 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 [ 54.066513][ T3487] RSP: 002b:00007ffc29e3f758 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 54.074930][ T3487] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa0b710e8b9 [ 54.082928][ T3487] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003 [ 54.090914][ T3487] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc29e3f7d0 [ 54.098881][ T3487] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 54.106844][ T3487] R13: 00007ffc29e3f958 R14: 0000000000000001 R15: 0000000000000001 [ 54.114834][ T3487] [ 54.117974][ T3487] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:209 [ 54.127463][ T3487] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3487, name: syz-executor846 [ 54.136929][ T3487] INFO: lockdep is turned off. [ 54.141754][ T3487] Preemption disabled at: [ 54.141763][ T3487] [<0000000000000000>] 0x0 [ 54.150710][ T3487] CPU: 1 PID: 3487 Comm: syz-executor846 Not tainted 5.15.126-syzkaller #0 [ 54.159395][ T3487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 54.169443][ T3487] Call Trace: [ 54.172715][ T3487] [ 54.175758][ T3487] dump_stack_lvl+0x1e3/0x2cb [ 54.180694][ T3487] ? io_uring_drop_tctx_refs+0x19d/0x19d [ 54.186358][ T3487] ? panic+0x84d/0x84d [ 54.190419][ T3487] ? rcu_is_watching+0x11/0xa0 [ 54.195181][ T3487] ? rcu_is_watching+0x11/0xa0 [ 54.200025][ T3487] ___might_sleep+0x547/0x6a0 [ 54.204700][ T3487] ? __might_sleep+0xc0/0xc0 [ 54.209286][ T3487] slab_pre_alloc_hook+0x44/0xc0 [ 54.214215][ T3487] __kmalloc_node+0x71/0x390 [ 54.218794][ T3487] ? kvmalloc_node+0x80/0x140 [ 54.223464][ T3487] ? __bpf_trace_softirq+0x10/0x10 [ 54.228663][ T3487] kvmalloc_node+0x80/0x140 [ 54.233157][ T3487] get_dist_table+0x83/0x2c0 [ 54.237739][ T3487] netem_change+0xa05/0x20c0 [ 54.242328][ T3487] ? netem_destroy+0xb0/0xb0 [ 54.246905][ T3487] ? debug_object_init+0x10/0x10 [ 54.251834][ T3487] ? memset+0x1f/0x40 [ 54.255812][ T3487] ? lockdep_init_map_type+0x9d/0x8d0 [ 54.261219][ T3487] ? memset+0x1f/0x40 [ 54.265215][ T3487] ? __hrtimer_init+0x181/0x260 [ 54.270059][ T3487] netem_init+0x58/0xb0 [ 54.274240][ T3487] ? qdisc_peek_dequeued+0x220/0x220 [ 54.279516][ T3487] qdisc_create+0x8ae/0x1390 [ 54.284101][ T3487] ? qdisc_notify+0x380/0x380 [ 54.288766][ T3487] ? apparmor_capable+0x12e/0x190 [ 54.293785][ T3487] tc_modify_qdisc+0xac5/0x1710 [ 54.298720][ T3487] ? rcu_lock_release+0x20/0x20 [ 54.303569][ T3487] ? rcu_lock_release+0x20/0x20 [ 54.308408][ T3487] rtnetlink_rcv_msg+0x993/0xee0 [ 54.313338][ T3487] ? reacquire_held_locks+0x660/0x660 [ 54.318707][ T3487] ? rtnetlink_bind+0x80/0x80 [ 54.323379][ T3487] ? is_bpf_text_address+0x24f/0x260 [ 54.328650][ T3487] ? stack_trace_save+0x1c0/0x1c0 [ 54.333663][ T3487] ? __kernel_text_address+0x94/0x100 [ 54.339043][ T3487] ? unwind_get_return_address+0x49/0x80 [ 54.344927][ T3487] ? arch_stack_walk+0xf3/0x140 [ 54.349769][ T3487] ? mark_lock+0x98/0x340 [ 54.354118][ T3487] ? mark_lock+0x98/0x340 [ 54.358435][ T3487] ? __lock_acquire+0x1295/0x1ff0 [ 54.363463][ T3487] netlink_rcv_skb+0x1cf/0x410 [ 54.368219][ T3487] ? rtnetlink_bind+0x80/0x80 [ 54.372884][ T3487] ? netlink_ack+0xb10/0xb10 [ 54.377487][ T3487] netlink_unicast+0x7b6/0x980 [ 54.382266][ T3487] ? netlink_detachskb+0x90/0x90 [ 54.387192][ T3487] ? 0xffffffff81000000 [ 54.391335][ T3487] ? __check_object_size+0x300/0x410 [ 54.396612][ T3487] ? bpf_lsm_netlink_send+0x5/0x10 [ 54.401716][ T3487] netlink_sendmsg+0xa30/0xd60 [ 54.406490][ T3487] ? netlink_getsockopt+0x5b0/0x5b0 [ 54.411767][ T3487] ? aa_sock_msg_perm+0x91/0x150 [ 54.416697][ T3487] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 54.421971][ T3487] ? security_socket_sendmsg+0x7d/0xa0 [ 54.427435][ T3487] ? netlink_getsockopt+0x5b0/0x5b0 [ 54.432640][ T3487] ____sys_sendmsg+0x59e/0x8f0 [ 54.437393][ T3487] ? iovec_from_user+0x300/0x390 [ 54.442324][ T3487] ? __sys_sendmsg_sock+0x30/0x30 [ 54.447353][ T3487] ___sys_sendmsg+0x252/0x2e0 [ 54.452023][ T3487] ? __sys_sendmsg+0x260/0x260 [ 54.456783][ T3487] ? __lock_acquire+0x1295/0x1ff0 [ 54.461808][ T3487] ? read_lock_is_recursive+0x10/0x10 [ 54.467170][ T3487] ? __context_tracking_exit+0x4c/0x80 [ 54.472619][ T3487] ? __fdget+0x158/0x220 [ 54.476853][ T3487] __se_sys_sendmsg+0x19a/0x260 [ 54.481692][ T3487] ? __x64_sys_sendmsg+0x80/0x80 [ 54.486628][ T3487] ? syscall_enter_from_user_mode+0x2e/0x230 [ 54.492607][ T3487] ? lockdep_hardirqs_on+0x94/0x130 [ 54.497887][ T3487] ? syscall_enter_from_user_mode+0x2e/0x230 [ 54.503856][ T3487] do_syscall_64+0x3d/0xb0 [ 54.508263][ T3487] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 54.514147][ T3487] RIP: 0033:0x7fa0b710e8b9 [ 54.518552][ 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 [ 54.538235][ T3487] RSP: 002b:00007ffc29e3f758 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 54.546660][ T3487] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa0b710e8b9 [ 54.554621][ T3487] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003 [ 54.562579][ T3487] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc29e3f7d0 [ 54.570537][ T3487] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 54.578497][ T3487] R13: 00007ffc29e3f958 R14: 0000000000000001 R15: 0000000000000001 [ 54.586463][ T3487]