program: r0 = socket$inet6_mptcp(0xa, 0x1, 0x106) connect$inet6(r0, &(0x7f0000000180)={0xa, 0x4001, 0x1, @dev={0xfe, 0x80, '\x00', 0x39}, 0x3e}, 0x1c) r1 = seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f00000000c0)={0x1, &(0x7f0000000040)=[{0x6, 0x0, 0x37, 0x7fffffff}]}) close_range(r1, 0xffffffffffffffff, 0x0) [ 89.826168][ T5300] Bluetooth: hci0: command tx timeout [ 90.079494][ C0] [ 90.080558][ C0] ================================ [ 90.082599][ C0] WARNING: inconsistent lock state [ 90.084898][ C0] syzkaller #0 Not tainted [ 90.086806][ C0] -------------------------------- [ 90.089010][ C0] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 90.091923][ C0] kworker/u4:4/70 [HC0[0]:SC1[3]:HE1:SE0] takes: [ 90.094757][ C0] ffff8880418b2a20 (k-sk_lock-AF_INET6){+.?.}-{0:0}, at: inet6_getname+0x1c8/0x740 [ 90.099088][ C0] {SOFTIRQ-ON-W} state was registered at: [ 90.101587][ C0] lock_acquire+0xf0/0x2e0 [ 90.103641][ C0] lock_sock_nested+0x48/0x100 [ 90.105761][ C0] tcp_sock_set_nodelay+0x2a/0x180 [ 90.108016][ C0] rds_tcp_listen_init+0x168/0x410 [ 90.110310][ C0] rds_tcp_init_net+0x154/0x380 [ 90.112509][ C0] ops_init+0x35c/0x5c0 [ 90.114444][ C0] register_pernet_operations+0x343/0x830 [ 90.116872][ C0] register_pernet_device+0x2a/0x80 [ 90.119234][ C0] rds_tcp_init+0xcf/0x170 [ 90.121297][ C0] do_one_initcall+0x250/0x8d0 [ 90.123410][ C0] do_initcall_level+0x104/0x190 [ 90.125598][ C0] do_initcalls+0x59/0xa0 [ 90.127656][ C0] kernel_init_freeable+0x2a6/0x3e0 [ 90.130008][ C0] kernel_init+0x1d/0x1d0 [ 90.131988][ C0] ret_from_fork+0x51e/0xb90 [ 90.134057][ C0] ret_from_fork_asm+0x1a/0x30 [ 90.136035][ C0] irq event stamp: 359918 [ 90.137830][ C0] hardirqs last enabled at (359918): [] _raw_spin_unlock_irqrestore+0x30/0x80 [ 90.142115][ C0] hardirqs last disabled at (359917): [] _raw_spin_lock_irqsave+0x1a/0x60 [ 90.146788][ C0] softirqs last enabled at (359852): [] __dev_queue_xmit+0x274/0x38a0 [ 90.151311][ C0] softirqs last disabled at (359853): [] do_softirq+0x76/0xd0 [ 90.155334][ C0] [ 90.155334][ C0] other info that might help us debug this: [ 90.158978][ C0] Possible unsafe locking scenario: [ 90.158978][ C0] [ 90.162349][ C0] CPU0 [ 90.163853][ C0] ---- [ 90.165416][ C0] lock(k-sk_lock-AF_INET6); [ 90.167549][ C0] [ 90.169152][ C0] lock(k-sk_lock-AF_INET6); [ 90.171344][ C0] [ 90.171344][ C0] *** DEADLOCK *** [ 90.171344][ C0] [ 90.174961][ C0] 10 locks held by kworker/u4:4/70: [ 90.177269][ C0] #0: ffff8880431a3948 ((wq_completion)krds_cp_wq#0/0){+.+.}-{0:0}, at: process_scheduled_works+0x9ea/0x1830 [ 90.182349][ C0] #1: ffffc90000affc40 ((work_completion)(&(&cp->cp_send_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa25/0x1830 [ 90.187835][ C0] #2: ffff8880418b3760 (k-sk_lock-AF_INET6){+.?.}-{0:0}, at: tcp_sock_set_cork+0x2c/0x2e0 [ 90.192365][ C0] #3: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: inet6_csk_xmit+0x110/0x6c0 [ 90.196540][ C0] #4: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: ip6_xmit+0x283/0x1980 [ 90.200679][ C0] #5: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: ip6_output+0x126/0x550 [ 90.204751][ C0] #6: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x3eb/0x1950 [ 90.209129][ C0] #7: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: ip6_input+0x23/0x270 [ 90.213220][ C0] #8: ffff8880418b29a0 (k-slock-AF_INET6/1){+.-.}-{3:3}, at: tcp_v6_rcv+0x2577/0x2f60 [ 90.217601][ C0] #9: ffff8880418b2bc8 (k-clock-AF_INET6){++.-}-{3:3}, at: rds_tcp_data_ready+0x113/0x9a0 [ 90.222120][ C0] [ 90.222120][ C0] stack backtrace: [ 90.224694][ C0] CPU: 0 UID: 0 PID: 70 Comm: kworker/u4:4 Not tainted syzkaller #0 PREEMPT(full) [ 90.224708][ C0] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 90.224717][ C0] Workqueue: krds_cp_wq#0/0 rds_send_worker [ 90.224779][ C0] Call Trace: [ 90.224787][ C0] [ 90.224793][ C0] dump_stack_lvl+0xe8/0x150 [ 90.224809][ C0] print_usage_bug+0x28b/0x2e0 [ 90.224824][ C0] mark_lock_irq+0x410/0x420 [ 90.224836][ C0] ? __pfx_stack_trace_save+0x10/0x10 [ 90.224847][ C0] mark_lock+0x115/0x190 [ 90.224859][ C0] __lock_acquire+0x689/0x2cf0 [ 90.224872][ C0] ? __update_page_owner_handle+0x5a/0x570 [ 90.224886][ C0] ? __update_page_owner_handle+0x51a/0x570 [ 90.224900][ C0] ? unwind_next_frame+0xa5/0x23c0 [ 90.224914][ C0] lock_acquire+0xf0/0x2e0 [ 90.224924][ C0] ? inet6_getname+0x1c8/0x740 [ 90.224936][ C0] lock_sock_nested+0x48/0x100 [ 90.224978][ C0] ? inet6_getname+0x1c8/0x740 [ 90.224988][ C0] inet6_getname+0x1c8/0x740 [ 90.224999][ C0] ? __pfx_inet6_getname+0x10/0x10 [ 90.225009][ C0] rds_tcp_conn_slots_available+0x288/0x470 [ 90.225021][ C0] ? __pfx_rds_tcp_conn_slots_available+0x10/0x10 [ 90.225034][ C0] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 90.225047][ C0] ? __pfx_rds_tcp_conn_slots_available+0x10/0x10 [ 90.225057][ C0] rds_recv_hs_exthdrs+0x60f/0x7c0 [ 90.225069][ C0] ? ip6_input+0x16a/0x270 [ 90.225081][ C0] ? NF_HOOK+0x336/0x3c0 [ 90.225092][ C0] ? process_backlog+0x7dd/0x1950 [ 90.225102][ C0] ? rds_recv_hs_exthdrs+0x161/0x7c0 [ 90.225111][ C0] ? tcp_write_xmit+0x16e8/0x6980 [ 90.225121][ C0] ? __tcp_push_pending_frames+0x97/0x380 [ 90.225132][ C0] ? __pfx_rds_recv_hs_exthdrs+0x10/0x10 [ 90.225142][ C0] ? process_scheduled_works+0xb02/0x1830 [ 90.225154][ C0] ? kthread+0x388/0x470 [ 90.225163][ C0] ? ret_from_fork_asm+0x1a/0x30 [ 90.225183][ C0] rds_recv_incoming+0x9f6/0x12d0 [ 90.225194][ C0] ? __pfx_rds_recv_incoming+0x10/0x10 [ 90.225204][ C0] ? skb_copy_bits+0x7e5/0x8f0 [ 90.225217][ C0] rds_tcp_data_recv+0x7f1/0xa40 [ 90.225231][ C0] __tcp_read_sock+0x196/0x970 [ 90.225246][ C0] ? __pfx_rds_tcp_data_recv+0x10/0x10 [ 90.225256][ C0] rds_tcp_data_ready+0x369/0x9a0 [ 90.225264][ C0] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 90.225272][ C0] ? __pfx_sock_def_readable+0x10/0x10 [ 90.225284][ C0] ? __pfx_rds_tcp_data_ready+0x10/0x10 [ 90.225296][ C0] tcp_rcv_established+0x19f4/0x2740 [ 90.225310][ C0] ? __pfx_tcp_rcv_established+0x10/0x10 [ 90.225322][ C0] ? ip6_dst_check+0xe2/0x7e0 [ 90.225331][ C0] ? ip6_dst_check+0x5e3/0x7e0 [ 90.225340][ C0] ? __pfx_ip6_dst_check+0x10/0x10 [ 90.225349][ C0] tcp_v6_do_rcv+0x8eb/0x1ba0 [ 90.225364][ C0] tcp_v6_rcv+0x2653/0x2f60 [ 90.225378][ C0] ? __pfx_tcp_v6_rcv+0x10/0x10 [ 90.225386][ C0] ? nf_nat_ipv6_fn+0xf3/0x2f0 [ 90.225396][ C0] ? __pfx_nf_nat_ipv6_fn+0x10/0x10 [ 90.225404][ C0] ? raw6_local_deliver+0x116/0x950 [ 90.225417][ C0] ? __pfx_tcp_v6_rcv+0x10/0x10 [ 90.225425][ C0] ip6_protocol_deliver_rcu+0xa73/0x1600 [ 90.225444][ C0] ip6_input_finish+0x191/0x370 [ 90.225458][ C0] NF_HOOK+0x336/0x3c0 [ 90.225469][ C0] ? ip6_dst_check+0xe2/0x7e0 [ 90.225479][ C0] ? __pfx_ip6_input_finish+0x10/0x10 [ 90.225492][ C0] ? NF_HOOK+0x9e/0x3c0 [ 90.225504][ C0] ? __pfx_NF_HOOK+0x10/0x10 [ 90.225515][ C0] ? __pfx_ip6_input_finish+0x10/0x10 [ 90.225530][ C0] ip6_input+0x16a/0x270 [ 90.225542][ C0] ? ip6_input+0x23/0x270 [ 90.225554][ C0] NF_HOOK+0x336/0x3c0 [ 90.225564][ C0] ? __pfx_tcp_wfree+0x10/0x10 [ 90.225573][ C0] ? skb_orphan+0x4f/0xd0 [ 90.225585][ C0] ? __pfx_ip6_rcv_finish+0x10/0x10 [ 90.225596][ C0] ? NF_HOOK+0x9e/0x3c0 [ 90.225608][ C0] ? __pfx_NF_HOOK+0x10/0x10 [ 90.225620][ C0] ? __pfx_ip6_rcv_finish+0x10/0x10 [ 90.225633][ C0] ? process_backlog+0x3eb/0x1950 [ 90.225642][ C0] process_backlog+0x7dd/0x1950 [ 90.225657][ C0] __napi_poll+0xae/0x340 [ 90.225666][ C0] ? skb_defer_free_flush+0x233/0x260 [ 90.225676][ C0] net_rx_action+0x627/0xf70 [ 90.225687][ C0] ? __pfx_net_rx_action+0x10/0x10 [ 90.225702][ C0] handle_softirqs+0x22a/0x870 [ 90.225716][ C0] ? do_softirq+0x76/0xd0 [ 90.225727][ C0] ? __dev_queue_xmit+0x274/0x38a0 [ 90.225739][ C0] do_softirq+0x76/0xd0 [ 90.225750][ C0] [ 90.225754][ C0] [ 90.225758][ C0] __local_bh_enable_ip+0xf8/0x130 [ 90.225769][ C0] ? __dev_queue_xmit+0x274/0x38a0 [ 90.225781][ C0] __dev_queue_xmit+0x1e6c/0x38a0 [ 90.225796][ C0] ? __dev_queue_xmit+0x274/0x38a0 [ 90.225810][ C0] ? __pfx___dev_queue_xmit+0x10/0x10 [ 90.225822][ C0] ? neigh_resolve_output+0x438/0x750 [ 90.225833][ C0] ? eth_header+0x11b/0x200 [ 90.225844][ C0] ? __asan_memcpy+0x40/0x70 [ 90.225856][ C0] ? eth_header+0x11b/0x200 [ 90.225867][ C0] ? __pfx_eth_header+0x10/0x10 [ 90.225878][ C0] ? neigh_resolve_output+0x624/0x750 [ 90.225890][ C0] ip6_finish_output+0x25c/0x610 [ 90.225902][ C0] ? ip6_output+0x126/0x550 [ 90.225935][ C0] ip6_output+0x340/0x550 [ 90.225947][ C0] ip6_xmit+0x1149/0x1980 [ 90.225959][ C0] ? ip6_xmit+0x283/0x1980 [ 90.225969][ C0] ? __pfx_ip6_xmit+0x10/0x10 [ 90.225982][ C0] ? __pfx_ip6_dst_check+0x10/0x10 [ 90.225992][ C0] inet6_csk_xmit+0x3bd/0x6c0 [ 90.226006][ C0] ? inet6_csk_xmit+0x110/0x6c0 [ 90.226019][ C0] ? __pfx_inet6_csk_xmit+0x10/0x10 [ 90.226031][ C0] __tcp_transmit_skb+0x24b5/0x4400 [ 90.226049][ C0] ? __pfx___tcp_transmit_skb+0x10/0x10 [ 90.226061][ C0] ? tcp_small_queue_check+0x1c1/0x3b0 [ 90.226073][ C0] tcp_write_xmit+0x16e8/0x6980 [ 90.226091][ C0] __tcp_push_pending_frames+0x97/0x380 [ 90.226104][ C0] tcp_sock_set_cork+0x186/0x2e0 [ 90.226117][ C0] ? __pfx_rds_tcp_xmit_path_complete+0x10/0x10 [ 90.226128][ C0] rds_send_xmit+0x207e/0x28d0 [ 90.226144][ C0] ? __pfx_rds_send_xmit+0x10/0x10 [ 90.226155][ C0] rds_send_worker+0x7d/0x2e0 [ 90.226168][ C0] ? process_scheduled_works+0xa25/0x1830 [ 90.226190][ C0] process_scheduled_works+0xb02/0x1830 [ 90.226207][ C0] ? __pfx_process_scheduled_works+0x10/0x10 [ 90.226219][ C0] ? assign_work+0x3d5/0x5e0 [ 90.226231][ C0] worker_thread+0xa50/0xfc0 [ 90.226247][ C0] kthread+0x388/0x470 [ 90.226256][ C0] ? __pfx_worker_thread+0x10/0x10 [ 90.226268][ C0] ? __pfx_kthread+0x10/0x10 [ 90.226277][ C0] ret_from_fork+0x51e/0xb90 [ 90.226290][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 90.226302][ C0] ? __switch_to+0xc7d/0x1450 [ 90.226312][ C0] ? __pfx_kthread+0x10/0x10 [ 90.226320][ C0] ret_from_fork_asm+0x1a/0x30 [ 90.226332][ C0] [ 90.507948][ C0] BUG: sleeping function called from invalid context at net/core/sock.c:3782 [ 90.511573][ C0] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 70, name: kworker/u4:4 [ 90.515485][ C0] preempt_count: 303, expected: 0 [ 90.517750][ C0] RCU nest depth: 5, expected: 0 [ 90.519885][ C0] INFO: lockdep is turned off. [ 90.521964][ C0] Preemption disabled at: [ 90.521971][ C0] [] __dev_queue_xmit+0x281/0x38a0 [ 90.526820][ C0] CPU: 0 UID: 0 PID: 70 Comm: kworker/u4:4 Not tainted syzkaller #0 PREEMPT(full) [ 90.526834][ C0] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 90.526841][ C0] Workqueue: krds_cp_wq#0/0 rds_send_worker [ 90.526859][ C0] Call Trace: [ 90.526866][ C0] [ 90.526871][ C0] dump_stack_lvl+0xe8/0x150 [ 90.526886][ C0] __might_resched+0x378/0x4d0 [ 90.526902][ C0] ? __dev_queue_xmit+0x281/0x38a0 [ 90.526916][ C0] lock_sock_nested+0x5d/0x100 [ 90.526937][ C0] inet6_getname+0x1c8/0x740 [ 90.526956][ C0] ? __pfx_inet6_getname+0x10/0x10 [ 90.526967][ C0] rds_tcp_conn_slots_available+0x288/0x470 [ 90.526978][ C0] ? __pfx_rds_tcp_conn_slots_available+0x10/0x10 [ 90.526990][ C0] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 90.527002][ C0] ? __pfx_rds_tcp_conn_slots_available+0x10/0x10 [ 90.527014][ C0] rds_recv_hs_exthdrs+0x60f/0x7c0 [ 90.527024][ C0] ? ip6_input+0x16a/0x270 [ 90.527037][ C0] ? NF_HOOK+0x336/0x3c0 [ 90.527048][ C0] ? process_backlog+0x7dd/0x1950 [ 90.527057][ C0] ? rds_recv_hs_exthdrs+0x161/0x7c0 [ 90.527066][ C0] ? tcp_write_xmit+0x16e8/0x6980 [ 90.527077][ C0] ? __tcp_push_pending_frames+0x97/0x380 [ 90.527087][ C0] ? __pfx_rds_recv_hs_exthdrs+0x10/0x10 [ 90.527097][ C0] ? process_scheduled_works+0xb02/0x1830 [ 90.527110][ C0] ? kthread+0x388/0x470 [ 90.527118][ C0] ? ret_from_fork_asm+0x1a/0x30 [ 90.527133][ C0] rds_recv_incoming+0x9f6/0x12d0 [ 90.527146][ C0] ? __pfx_rds_recv_incoming+0x10/0x10 [ 90.527156][ C0] ? skb_copy_bits+0x7e5/0x8f0 [ 90.527168][ C0] rds_tcp_data_recv+0x7f1/0xa40 [ 90.527180][ C0] __tcp_read_sock+0x196/0x970 [ 90.527194][ C0] ? __pfx_rds_tcp_data_recv+0x10/0x10 [ 90.527205][ C0] rds_tcp_data_ready+0x369/0x9a0 [ 90.527214][ C0] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 90.527226][ C0] ? __pfx_sock_def_readable+0x10/0x10 [ 90.527239][ C0] ? __pfx_rds_tcp_data_ready+0x10/0x10 [ 90.527251][ C0] tcp_rcv_established+0x19f4/0x2740 [ 90.527267][ C0] ? __pfx_tcp_rcv_established+0x10/0x10 [ 90.527280][ C0] ? ip6_dst_check+0xe2/0x7e0 [ 90.527290][ C0] ? ip6_dst_check+0x5e3/0x7e0 [ 90.527299][ C0] ? __pfx_ip6_dst_check+0x10/0x10 [ 90.527309][ C0] tcp_v6_do_rcv+0x8eb/0x1ba0 [ 90.527326][ C0] tcp_v6_rcv+0x2653/0x2f60 [ 90.527340][ C0] ? __pfx_tcp_v6_rcv+0x10/0x10 [ 90.527347][ C0] ? nf_nat_ipv6_fn+0xf3/0x2f0 [ 90.527356][ C0] ? __pfx_nf_nat_ipv6_fn+0x10/0x10 [ 90.527364][ C0] ? raw6_local_deliver+0x116/0x950 [ 90.527377][ C0] ? __pfx_tcp_v6_rcv+0x10/0x10 [ 90.527385][ C0] ip6_protocol_deliver_rcu+0xa73/0x1600 [ 90.527402][ C0] ip6_input_finish+0x191/0x370 [ 90.527416][ C0] NF_HOOK+0x336/0x3c0 [ 90.527427][ C0] ? ip6_dst_check+0xe2/0x7e0 [ 90.527437][ C0] ? __pfx_ip6_input_finish+0x10/0x10 [ 90.527450][ C0] ? NF_HOOK+0x9e/0x3c0 [ 90.527462][ C0] ? __pfx_NF_HOOK+0x10/0x10 [ 90.527479][ C0] ? __pfx_ip6_input_finish+0x10/0x10 [ 90.527493][ C0] ip6_input+0x16a/0x270 [ 90.527503][ C0] ? ip6_input+0x23/0x270 [ 90.527512][ C0] NF_HOOK+0x336/0x3c0 [ 90.527522][ C0] ? __pfx_tcp_wfree+0x10/0x10 [ 90.527530][ C0] ? skb_orphan+0x4f/0xd0 [ 90.527541][ C0] ? __pfx_ip6_rcv_finish+0x10/0x10 [ 90.527552][ C0] ? NF_HOOK+0x9e/0x3c0 [ 90.527563][ C0] ? __pfx_NF_HOOK+0x10/0x10 [ 90.527574][ C0] ? __pfx_ip6_rcv_finish+0x10/0x10 [ 90.527586][ C0] ? process_backlog+0x3eb/0x1950 [ 90.527595][ C0] process_backlog+0x7dd/0x1950 [ 90.527609][ C0] __napi_poll+0xae/0x340 [ 90.527617][ C0] ? skb_defer_free_flush+0x233/0x260 [ 90.527627][ C0] net_rx_action+0x627/0xf70 [ 90.527641][ C0] ? __pfx_net_rx_action+0x10/0x10 [ 90.527654][ C0] handle_softirqs+0x22a/0x870 [ 90.527670][ C0] ? do_softirq+0x76/0xd0 [ 90.527680][ C0] ? __dev_queue_xmit+0x274/0x38a0 [ 90.527692][ C0] do_softirq+0x76/0xd0 [ 90.527703][ C0] [ 90.527706][ C0] [ 90.527710][ C0] __local_bh_enable_ip+0xf8/0x130 [ 90.527720][ C0] ? __dev_queue_xmit+0x274/0x38a0 [ 90.527732][ C0] __dev_queue_xmit+0x1e6c/0x38a0 [ 90.527746][ C0] ? __dev_queue_xmit+0x274/0x38a0 [ 90.527760][ C0] ? __pfx___dev_queue_xmit+0x10/0x10 [ 90.527772][ C0] ? neigh_resolve_output+0x438/0x750 [ 90.527783][ C0] ? eth_header+0x11b/0x200 [ 90.527795][ C0] ? __asan_memcpy+0x40/0x70 [ 90.527807][ C0] ? eth_header+0x11b/0x200 [ 90.527818][ C0] ? __pfx_eth_header+0x10/0x10 [ 90.527828][ C0] ? neigh_resolve_output+0x624/0x750 [ 90.527840][ C0] ip6_finish_output+0x25c/0x610 [ 90.527851][ C0] ? ip6_output+0x126/0x550 [ 90.527862][ C0] ip6_output+0x340/0x550 [ 90.527873][ C0] ip6_xmit+0x1149/0x1980 [ 90.527885][ C0] ? ip6_xmit+0x283/0x1980 [ 90.527896][ C0] ? __pfx_ip6_xmit+0x10/0x10 [ 90.527909][ C0] ? __pfx_ip6_dst_check+0x10/0x10 [ 90.527921][ C0] inet6_csk_xmit+0x3bd/0x6c0 [ 90.527936][ C0] ? inet6_csk_xmit+0x110/0x6c0 [ 90.527955][ C0] ? __pfx_inet6_csk_xmit+0x10/0x10 [ 90.527967][ C0] __tcp_transmit_skb+0x24b5/0x4400 [ 90.527982][ C0] ? __pfx___tcp_transmit_skb+0x10/0x10 [ 90.527997][ C0] ? tcp_small_queue_check+0x1c1/0x3b0 [ 90.528009][ C0] tcp_write_xmit+0x16e8/0x6980 [ 90.528030][ C0] __tcp_push_pending_frames+0x97/0x380 [ 90.528041][ C0] tcp_sock_set_cork+0x186/0x2e0 [ 90.528054][ C0] ? __pfx_rds_tcp_xmit_path_complete+0x10/0x10 [ 90.528064][ C0] rds_send_xmit+0x207e/0x28d0 [ 90.528081][ C0] ? __pfx_rds_send_xmit+0x10/0x10 [ 90.528093][ C0] rds_send_worker+0x7d/0x2e0 [ 90.528105][ C0] ? process_scheduled_works+0xa25/0x1830 [ 90.528118][ C0] process_scheduled_works+0xb02/0x1830 [ 90.528134][ C0] ? __pfx_process_scheduled_works+0x10/0x10 [ 90.528146][ C0] ? assign_work+0x3d5/0x5e0 [ 90.528159][ C0] worker_thread+0xa50/0xfc0 [ 90.528177][ C0] kthread+0x388/0x470 [ 90.528186][ C0] ? __pfx_worker_thread+0x10/0x10 [ 90.528198][ C0] ? __pfx_kthread+0x10/0x10 [ 90.528206][ C0] ret_from_fork+0x51e/0xb90 [ 90.528214][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 90.528225][ C0] ? __switch_to+0xc7d/0x1450 [ 90.528235][ C0] ? __pfx_kthread+0x10/0x10 [ 90.528244][ C0] ret_from_fork_asm+0x1a/0x30 [ 90.528261][ C0]