program: r0 = socket$key(0xf, 0x3, 0x2) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000002c0)='cpuacct.usage_sys\x00', 0x26e1, 0x0) close(r1) r2 = socket$inet6_mptcp(0xa, 0x1, 0x106) connect$inet6(r2, &(0x7f0000000180)={0xa, 0x4001, 0x1, @dev={0xfe, 0x80, '\x00', 0x39}, 0x3e}, 0x1c) write$cgroup_type(r1, &(0x7f0000000080), 0x11ffffce1) munmap(&(0x7f0000470000/0x400000)=nil, 0xe06500) sendmmsg(r0, 0x0, 0x0, 0x0) write$RDMA_USER_CM_CMD_CREATE_ID(r1, &(0x7f0000000140)={0x0, 0x18, 0xfa00, {0x1, 0x0, 0x106, 0x1}}, 0x20) [ 86.680707][ T5296] Bluetooth: hci0: command tx timeout [ 86.927523][ C0] [ 86.928680][ C0] ================================ [ 86.930985][ C0] WARNING: inconsistent lock state [ 86.933265][ C0] syzkaller #0 Not tainted [ 86.935280][ C0] -------------------------------- [ 86.937466][ C0] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 86.940460][ C0] kworker/u4:10/1100 [HC0[0]:SC1[3]:HE1:SE0] takes: [ 86.943287][ C0] ffff888036a3aa20 (k-sk_lock-AF_INET6){+.?.}-{0:0}, at: inet6_getname+0x1c8/0x740 [ 86.950761][ C0] {SOFTIRQ-ON-W} state was registered at: [ 86.953214][ C0] lock_acquire+0xf0/0x2e0 [ 86.955389][ C0] lock_sock_nested+0x48/0x100 [ 86.957582][ C0] tcp_sock_set_nodelay+0x2a/0x180 [ 86.959911][ C0] rds_tcp_listen_init+0x168/0x410 [ 86.962315][ C0] rds_tcp_init_net+0x154/0x380 [ 86.964543][ C0] ops_init+0x35c/0x5c0 [ 86.966476][ C0] register_pernet_operations+0x343/0x830 [ 86.969147][ C0] register_pernet_device+0x2a/0x80 [ 86.971632][ C0] rds_tcp_init+0xcf/0x170 [ 86.973853][ C0] do_one_initcall+0x250/0x8d0 [ 86.976180][ C0] do_initcall_level+0x104/0x190 [ 86.978502][ C0] do_initcalls+0x59/0xa0 [ 86.980517][ C0] kernel_init_freeable+0x2a6/0x3e0 [ 86.982529][ C0] kernel_init+0x1d/0x1d0 [ 86.984072][ C0] ret_from_fork+0x51e/0xb90 [ 86.985946][ C0] ret_from_fork_asm+0x1a/0x30 [ 86.987876][ C0] irq event stamp: 74956 [ 86.989551][ C0] hardirqs last enabled at (74956): [] _raw_spin_unlock_irqrestore+0x30/0x80 [ 86.993895][ C0] hardirqs last disabled at (74955): [] _raw_spin_lock_irqsave+0x1a/0x60 [ 86.998119][ C0] softirqs last enabled at (74890): [] __dev_queue_xmit+0x274/0x38a0 [ 87.002287][ C0] softirqs last disabled at (74891): [] do_softirq+0x76/0xd0 [ 87.006090][ C0] [ 87.006090][ C0] other info that might help us debug this: [ 87.009669][ C0] Possible unsafe locking scenario: [ 87.009669][ C0] [ 87.012959][ C0] CPU0 [ 87.014452][ C0] ---- [ 87.015930][ C0] lock(k-sk_lock-AF_INET6); [ 87.018012][ C0] [ 87.019452][ C0] lock(k-sk_lock-AF_INET6); [ 87.021687][ C0] [ 87.021687][ C0] *** DEADLOCK *** [ 87.021687][ C0] [ 87.026014][ C0] 10 locks held by kworker/u4:10/1100: [ 87.028524][ C0] #0: ffff888040a97948 ((wq_completion)krds_cp_wq#0/0){+.+.}-{0:0}, at: process_scheduled_works+0x9ea/0x1830 [ 87.033811][ C0] #1: ffffc90005757c40 ((work_completion)(&(&cp->cp_send_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa25/0x1830 [ 87.040399][ C0] #2: ffff888036a3b760 (k-sk_lock-AF_INET6){+.?.}-{0:0}, at: tcp_sock_set_cork+0x2c/0x2e0 [ 87.045182][ C0] #3: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: inet6_csk_xmit+0x110/0x6c0 [ 87.049259][ C0] #4: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: ip6_xmit+0x283/0x1980 [ 87.053154][ C0] #5: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x126/0x550 [ 87.057860][ C0] #6: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x3eb/0x1950 [ 87.061909][ C0] #7: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: ip6_input+0x23/0x270 [ 87.065660][ C0] #8: ffff888036a3a9a0 (k-slock-AF_INET6/1){+.-.}-{3:3}, at: tcp_v6_rcv+0x2577/0x2f60 [ 87.069854][ C0] #9: ffff888036a3abc8 (k-clock-AF_INET6){++.-}-{3:3}, at: rds_tcp_data_ready+0x113/0x9a0 [ 87.074212][ C0] [ 87.074212][ C0] stack backtrace: [ 87.076819][ C0] CPU: 0 UID: 0 PID: 1100 Comm: kworker/u4:10 Not tainted syzkaller #0 PREEMPT(full) [ 87.076832][ C0] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 87.076840][ C0] Workqueue: krds_cp_wq#0/0 rds_send_worker [ 87.076858][ C0] Call Trace: [ 87.076865][ C0] [ 87.076870][ C0] dump_stack_lvl+0xe8/0x150 [ 87.076885][ C0] print_usage_bug+0x28b/0x2e0 [ 87.076900][ C0] mark_lock_irq+0x410/0x420 [ 87.076912][ C0] ? __pfx_stack_trace_save+0x10/0x10 [ 87.076923][ C0] mark_lock+0x115/0x190 [ 87.076935][ C0] __lock_acquire+0x689/0x2cf0 [ 87.076948][ C0] ? __update_page_owner_handle+0x5a/0x570 [ 87.077016][ C0] ? __update_page_owner_handle+0x51a/0x570 [ 87.077030][ C0] ? unwind_next_frame+0xa5/0x23c0 [ 87.077045][ C0] lock_acquire+0xf0/0x2e0 [ 87.077057][ C0] ? inet6_getname+0x1c8/0x740 [ 87.077068][ C0] lock_sock_nested+0x48/0x100 [ 87.077083][ C0] ? inet6_getname+0x1c8/0x740 [ 87.077092][ C0] inet6_getname+0x1c8/0x740 [ 87.077104][ C0] ? __pfx_inet6_getname+0x10/0x10 [ 87.077114][ C0] rds_tcp_conn_slots_available+0x288/0x470 [ 87.077125][ C0] ? __pfx_rds_tcp_conn_slots_available+0x10/0x10 [ 87.077137][ C0] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 87.077150][ C0] ? __pfx_rds_tcp_conn_slots_available+0x10/0x10 [ 87.077159][ C0] rds_recv_hs_exthdrs+0x60f/0x7c0 [ 87.077170][ C0] ? ip6_input+0x16a/0x270 [ 87.077182][ C0] ? NF_HOOK+0x336/0x3c0 [ 87.077193][ C0] ? process_backlog+0x7dd/0x1950 [ 87.077204][ C0] ? rds_recv_hs_exthdrs+0x161/0x7c0 [ 87.077214][ C0] ? tcp_write_xmit+0x16e8/0x6980 [ 87.077225][ C0] ? __tcp_push_pending_frames+0x97/0x380 [ 87.077235][ C0] ? __pfx_rds_recv_hs_exthdrs+0x10/0x10 [ 87.077244][ C0] ? process_scheduled_works+0xb02/0x1830 [ 87.077256][ C0] ? kthread+0x388/0x470 [ 87.077265][ C0] ? ret_from_fork_asm+0x1a/0x30 [ 87.077280][ C0] rds_recv_incoming+0x9f6/0x12d0 [ 87.077292][ C0] ? __pfx_rds_recv_incoming+0x10/0x10 [ 87.077303][ C0] ? skb_copy_bits+0x7e5/0x8f0 [ 87.077315][ C0] rds_tcp_data_recv+0x7f1/0xa40 [ 87.077328][ C0] __tcp_read_sock+0x196/0x970 [ 87.077343][ C0] ? __pfx_rds_tcp_data_recv+0x10/0x10 [ 87.077354][ C0] rds_tcp_data_ready+0x369/0x9a0 [ 87.077363][ C0] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 87.077374][ C0] ? __pfx_sock_def_readable+0x10/0x10 [ 87.077387][ C0] ? __pfx_rds_tcp_data_ready+0x10/0x10 [ 87.077399][ C0] tcp_rcv_established+0x19f4/0x2740 [ 87.077414][ C0] ? __pfx_tcp_rcv_established+0x10/0x10 [ 87.077426][ C0] ? ip6_dst_check+0xe2/0x7e0 [ 87.077436][ C0] ? ip6_dst_check+0x5e3/0x7e0 [ 87.077445][ C0] ? __pfx_ip6_dst_check+0x10/0x10 [ 87.077455][ C0] tcp_v6_do_rcv+0x8eb/0x1ba0 [ 87.077471][ C0] tcp_v6_rcv+0x2653/0x2f60 [ 87.077512][ C0] ? __pfx_tcp_v6_rcv+0x10/0x10 [ 87.077522][ C0] ? nf_nat_ipv6_fn+0xf3/0x2f0 [ 87.077532][ C0] ? __pfx_nf_nat_ipv6_fn+0x10/0x10 [ 87.077540][ C0] ? raw6_local_deliver+0x116/0x950 [ 87.077554][ C0] ? __pfx_tcp_v6_rcv+0x10/0x10 [ 87.077563][ C0] ip6_protocol_deliver_rcu+0xa73/0x1600 [ 87.077580][ C0] ip6_input_finish+0x191/0x370 [ 87.077594][ C0] NF_HOOK+0x336/0x3c0 [ 87.077611][ C0] ? ip6_dst_check+0xe2/0x7e0 [ 87.077620][ C0] ? __pfx_ip6_input_finish+0x10/0x10 [ 87.077632][ C0] ? NF_HOOK+0x9e/0x3c0 [ 87.077644][ C0] ? __pfx_NF_HOOK+0x10/0x10 [ 87.077656][ C0] ? __pfx_ip6_input_finish+0x10/0x10 [ 87.077670][ C0] ip6_input+0x16a/0x270 [ 87.077682][ C0] ? ip6_input+0x23/0x270 [ 87.077692][ C0] NF_HOOK+0x336/0x3c0 [ 87.077703][ C0] ? __pfx_tcp_wfree+0x10/0x10 [ 87.077711][ C0] ? skb_orphan+0x4f/0xd0 [ 87.077723][ C0] ? __pfx_ip6_rcv_finish+0x10/0x10 [ 87.077735][ C0] ? NF_HOOK+0x9e/0x3c0 [ 87.077746][ C0] ? __pfx_NF_HOOK+0x10/0x10 [ 87.077759][ C0] ? __pfx_ip6_rcv_finish+0x10/0x10 [ 87.077772][ C0] ? process_backlog+0x3eb/0x1950 [ 87.077781][ C0] process_backlog+0x7dd/0x1950 [ 87.077794][ C0] __napi_poll+0xae/0x340 [ 87.077803][ C0] ? skb_defer_free_flush+0x233/0x260 [ 87.077812][ C0] net_rx_action+0x627/0xf70 [ 87.077825][ C0] ? __pfx_net_rx_action+0x10/0x10 [ 87.077841][ C0] handle_softirqs+0x22a/0x870 [ 87.077854][ C0] ? do_softirq+0x76/0xd0 [ 87.077866][ C0] ? __dev_queue_xmit+0x274/0x38a0 [ 87.077878][ C0] do_softirq+0x76/0xd0 [ 87.077890][ C0] [ 87.077893][ C0] [ 87.077896][ C0] __local_bh_enable_ip+0xf8/0x130 [ 87.077907][ C0] ? __dev_queue_xmit+0x274/0x38a0 [ 87.077919][ C0] __dev_queue_xmit+0x1e6c/0x38a0 [ 87.077933][ C0] ? __dev_queue_xmit+0x274/0x38a0 [ 87.077947][ C0] ? __pfx___dev_queue_xmit+0x10/0x10 [ 87.077959][ C0] ? neigh_resolve_output+0x438/0x750 [ 87.077969][ C0] ? eth_header+0x11b/0x200 [ 87.077980][ C0] ? __asan_memcpy+0x40/0x70 [ 87.077993][ C0] ? eth_header+0x11b/0x200 [ 87.078005][ C0] ? __pfx_eth_header+0x10/0x10 [ 87.078015][ C0] ? neigh_resolve_output+0x624/0x750 [ 87.078027][ C0] ip6_finish_output+0x25c/0x610 [ 87.078039][ C0] ? ip6_output+0x126/0x550 [ 87.078049][ C0] ip6_output+0x340/0x550 [ 87.078061][ C0] ip6_xmit+0x1149/0x1980 [ 87.078073][ C0] ? ip6_xmit+0x283/0x1980 [ 87.078089][ C0] ? __pfx_ip6_xmit+0x10/0x10 [ 87.078101][ C0] ? __pfx_ip6_dst_check+0x10/0x10 [ 87.078117][ C0] inet6_csk_xmit+0x3bd/0x6c0 [ 87.078131][ C0] ? inet6_csk_xmit+0x110/0x6c0 [ 87.078144][ C0] ? __pfx_inet6_csk_xmit+0x10/0x10 [ 87.078156][ C0] __tcp_transmit_skb+0x24b5/0x4400 [ 87.078173][ C0] ? __pfx___tcp_transmit_skb+0x10/0x10 [ 87.078186][ C0] ? tcp_small_queue_check+0x1c1/0x3b0 [ 87.078197][ C0] tcp_write_xmit+0x16e8/0x6980 [ 87.078216][ C0] __tcp_push_pending_frames+0x97/0x380 [ 87.078228][ C0] tcp_sock_set_cork+0x186/0x2e0 [ 87.078241][ C0] ? __pfx_rds_tcp_xmit_path_complete+0x10/0x10 [ 87.078252][ C0] rds_send_xmit+0x207e/0x28d0 [ 87.078269][ C0] ? __pfx_rds_send_xmit+0x10/0x10 [ 87.078282][ C0] rds_send_worker+0x7d/0x2e0 [ 87.078294][ C0] ? process_scheduled_works+0xa25/0x1830 [ 87.078305][ C0] process_scheduled_works+0xb02/0x1830 [ 87.078321][ C0] ? __pfx_process_scheduled_works+0x10/0x10 [ 87.078333][ C0] ? assign_work+0x3d5/0x5e0 [ 87.078345][ C0] worker_thread+0xa50/0xfc0 [ 87.078363][ C0] kthread+0x388/0x470 [ 87.078373][ C0] ? __pfx_worker_thread+0x10/0x10 [ 87.078383][ C0] ? __pfx_kthread+0x10/0x10 [ 87.078390][ C0] ret_from_fork+0x51e/0xb90 [ 87.078400][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 87.078407][ C0] ? __switch_to+0xc7d/0x1450 [ 87.078414][ C0] ? __pfx_kthread+0x10/0x10 [ 87.078420][ C0] ret_from_fork_asm+0x1a/0x30 [ 87.078430][ C0] [ 87.356578][ C0] BUG: sleeping function called from invalid context at net/core/sock.c:3782 [ 87.360569][ C0] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1100, name: kworker/u4:10 [ 87.364719][ C0] preempt_count: 303, expected: 0 [ 87.366976][ C0] RCU nest depth: 5, expected: 0 [ 87.369198][ C0] INFO: lockdep is turned off. [ 87.371226][ C0] Preemption disabled at: [ 87.371232][ C0] [] __dev_queue_xmit+0x281/0x38a0 [ 87.376199][ C0] CPU: 0 UID: 0 PID: 1100 Comm: kworker/u4:10 Not tainted syzkaller #0 PREEMPT(full) [ 87.376213][ C0] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 87.376221][ C0] Workqueue: krds_cp_wq#0/0 rds_send_worker [ 87.376242][ C0] Call Trace: [ 87.376250][ C0] [ 87.376255][ C0] dump_stack_lvl+0xe8/0x150 [ 87.376271][ C0] __might_resched+0x378/0x4d0 [ 87.376286][ C0] ? __dev_queue_xmit+0x281/0x38a0 [ 87.376302][ C0] lock_sock_nested+0x5d/0x100 [ 87.376318][ C0] inet6_getname+0x1c8/0x740 [ 87.376331][ C0] ? __pfx_inet6_getname+0x10/0x10 [ 87.376343][ C0] rds_tcp_conn_slots_available+0x288/0x470 [ 87.376355][ C0] ? __pfx_rds_tcp_conn_slots_available+0x10/0x10 [ 87.376370][ C0] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 87.376381][ C0] ? __pfx_rds_tcp_conn_slots_available+0x10/0x10 [ 87.376390][ C0] rds_recv_hs_exthdrs+0x60f/0x7c0 [ 87.376402][ C0] ? ip6_input+0x16a/0x270 [ 87.376415][ C0] ? NF_HOOK+0x336/0x3c0 [ 87.376428][ C0] ? process_backlog+0x7dd/0x1950 [ 87.376440][ C0] ? rds_recv_hs_exthdrs+0x161/0x7c0 [ 87.376452][ C0] ? tcp_write_xmit+0x16e8/0x6980 [ 87.376464][ C0] ? __tcp_push_pending_frames+0x97/0x380 [ 87.376476][ C0] ? __pfx_rds_recv_hs_exthdrs+0x10/0x10 [ 87.376487][ C0] ? process_scheduled_works+0xb02/0x1830 [ 87.376500][ C0] ? kthread+0x388/0x470 [ 87.376509][ C0] ? ret_from_fork_asm+0x1a/0x30 [ 87.376526][ C0] rds_recv_incoming+0x9f6/0x12d0 [ 87.376540][ C0] ? __pfx_rds_recv_incoming+0x10/0x10 [ 87.376549][ C0] ? skb_copy_bits+0x7e5/0x8f0 [ 87.376560][ C0] rds_tcp_data_recv+0x7f1/0xa40 [ 87.376575][ C0] __tcp_read_sock+0x196/0x970 [ 87.376591][ C0] ? __pfx_rds_tcp_data_recv+0x10/0x10 [ 87.376602][ C0] rds_tcp_data_ready+0x369/0x9a0 [ 87.376614][ C0] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 87.376626][ C0] ? __pfx_sock_def_readable+0x10/0x10 [ 87.376640][ C0] ? __pfx_rds_tcp_data_ready+0x10/0x10 [ 87.376654][ C0] tcp_rcv_established+0x19f4/0x2740 [ 87.376671][ C0] ? __pfx_tcp_rcv_established+0x10/0x10 [ 87.376692][ C0] ? ip6_dst_check+0xe2/0x7e0 [ 87.376703][ C0] ? ip6_dst_check+0x5e3/0x7e0 [ 87.376714][ C0] ? __pfx_ip6_dst_check+0x10/0x10 [ 87.376725][ C0] tcp_v6_do_rcv+0x8eb/0x1ba0 [ 87.376744][ C0] tcp_v6_rcv+0x2653/0x2f60 [ 87.376761][ C0] ? __pfx_tcp_v6_rcv+0x10/0x10 [ 87.376770][ C0] ? nf_nat_ipv6_fn+0xf3/0x2f0 [ 87.376781][ C0] ? __pfx_nf_nat_ipv6_fn+0x10/0x10 [ 87.376790][ C0] ? raw6_local_deliver+0x116/0x950 [ 87.376805][ C0] ? __pfx_tcp_v6_rcv+0x10/0x10 [ 87.376813][ C0] ip6_protocol_deliver_rcu+0xa73/0x1600 [ 87.376833][ C0] ip6_input_finish+0x191/0x370 [ 87.376848][ C0] NF_HOOK+0x336/0x3c0 [ 87.376861][ C0] ? ip6_dst_check+0xe2/0x7e0 [ 87.376872][ C0] ? __pfx_ip6_input_finish+0x10/0x10 [ 87.376882][ C0] ? NF_HOOK+0x9e/0x3c0 [ 87.376893][ C0] ? __pfx_NF_HOOK+0x10/0x10 [ 87.376906][ C0] ? __pfx_ip6_input_finish+0x10/0x10 [ 87.376923][ C0] ip6_input+0x16a/0x270 [ 87.376935][ C0] ? ip6_input+0x23/0x270 [ 87.376949][ C0] NF_HOOK+0x336/0x3c0 [ 87.376961][ C0] ? __pfx_tcp_wfree+0x10/0x10 [ 87.376971][ C0] ? skb_orphan+0x4f/0xd0 [ 87.376984][ C0] ? __pfx_ip6_rcv_finish+0x10/0x10 [ 87.376997][ C0] ? NF_HOOK+0x9e/0x3c0 [ 87.377011][ C0] ? __pfx_NF_HOOK+0x10/0x10 [ 87.377023][ C0] ? __pfx_ip6_rcv_finish+0x10/0x10 [ 87.377037][ C0] ? process_backlog+0x3eb/0x1950 [ 87.377047][ C0] process_backlog+0x7dd/0x1950 [ 87.377062][ C0] __napi_poll+0xae/0x340 [ 87.377072][ C0] ? skb_defer_free_flush+0x233/0x260 [ 87.377084][ C0] net_rx_action+0x627/0xf70 [ 87.377096][ C0] ? __pfx_net_rx_action+0x10/0x10 [ 87.377113][ C0] handle_softirqs+0x22a/0x870 [ 87.377127][ C0] ? do_softirq+0x76/0xd0 [ 87.377145][ C0] ? __dev_queue_xmit+0x274/0x38a0 [ 87.377158][ C0] do_softirq+0x76/0xd0 [ 87.377171][ C0] [ 87.377174][ C0] [ 87.377178][ C0] __local_bh_enable_ip+0xf8/0x130 [ 87.377191][ C0] ? __dev_queue_xmit+0x274/0x38a0 [ 87.377203][ C0] __dev_queue_xmit+0x1e6c/0x38a0 [ 87.377218][ C0] ? __dev_queue_xmit+0x274/0x38a0 [ 87.377233][ C0] ? __pfx___dev_queue_xmit+0x10/0x10 [ 87.377246][ C0] ? neigh_resolve_output+0x438/0x750 [ 87.377258][ C0] ? eth_header+0x11b/0x200 [ 87.377269][ C0] ? __asan_memcpy+0x40/0x70 [ 87.377283][ C0] ? eth_header+0x11b/0x200 [ 87.377295][ C0] ? __pfx_eth_header+0x10/0x10 [ 87.377307][ C0] ? neigh_resolve_output+0x624/0x750 [ 87.377320][ C0] ip6_finish_output+0x25c/0x610 [ 87.377332][ C0] ? ip6_output+0x126/0x550 [ 87.377344][ C0] ip6_output+0x340/0x550 [ 87.377356][ C0] ip6_xmit+0x1149/0x1980 [ 87.377370][ C0] ? ip6_xmit+0x283/0x1980 [ 87.377381][ C0] ? __pfx_ip6_xmit+0x10/0x10 [ 87.377392][ C0] ? __pfx_ip6_dst_check+0x10/0x10 [ 87.377404][ C0] inet6_csk_xmit+0x3bd/0x6c0 [ 87.377420][ C0] ? inet6_csk_xmit+0x110/0x6c0 [ 87.377434][ C0] ? __pfx_inet6_csk_xmit+0x10/0x10 [ 87.377448][ C0] __tcp_transmit_skb+0x24b5/0x4400 [ 87.377465][ C0] ? __pfx___tcp_transmit_skb+0x10/0x10 [ 87.377508][ C0] ? tcp_small_queue_check+0x1c1/0x3b0 [ 87.377524][ C0] tcp_write_xmit+0x16e8/0x6980 [ 87.377545][ C0] __tcp_push_pending_frames+0x97/0x380 [ 87.377558][ C0] tcp_sock_set_cork+0x186/0x2e0 [ 87.377573][ C0] ? __pfx_rds_tcp_xmit_path_complete+0x10/0x10 [ 87.377586][ C0] rds_send_xmit+0x207e/0x28d0 [ 87.377604][ C0] ? __pfx_rds_send_xmit+0x10/0x10 [ 87.377618][ C0] rds_send_worker+0x7d/0x2e0 [ 87.377631][ C0] ? process_scheduled_works+0xa25/0x1830 [ 87.377644][ C0] process_scheduled_works+0xb02/0x1830 [ 87.377661][ C0] ? __pfx_process_scheduled_works+0x10/0x10 [ 87.377672][ C0] ? assign_work+0x3d5/0x5e0 [ 87.377691][ C0] worker_thread+0xa50/0xfc0 [ 87.377710][ C0] kthread+0x388/0x470 [ 87.377721][ C0] ? __pfx_worker_thread+0x10/0x10 [ 87.377732][ C0] ? __pfx_kthread+0x10/0x10 [ 87.377742][ C0] ret_from_fork+0x51e/0xb90 [ 87.377756][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 87.377769][ C0] ? __switch_to+0xc7d/0x1450 [ 87.377782][ C0] ? __pfx_kthread+0x10/0x10 [ 87.377791][ C0] ret_from_fork_asm+0x1a/0x30 [ 87.377804][ C0]