INFO: task khugepaged:34 blocked for more than 143 seconds. Not tainted 6.4.0-rc7-syzkaller-01944-g3674fbf0451d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:khugepaged state:D stack:28168 pid:34 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5343 [inline] __schedule+0xc9a/0x5880 kernel/sched/core.c:6669 schedule+0xde/0x1a0 kernel/sched/core.c:6745 schedule_timeout+0x276/0x2b0 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106 __flush_work+0x595/0xb60 kernel/workqueue.c:3189 __lru_add_drain_all+0x1bf/0x6a0 mm/swap.c:897 khugepaged_do_scan mm/khugepaged.c:2598 [inline] khugepaged+0x105/0x1740 mm/khugepaged.c:2667 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Showing all locks held in the system: 3 locks held by kworker/u4:1/12: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8c7984f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518 1 lock held by rcu_tasks_trace/14: #0: ffffffff8c7981f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518 1 lock held by khungtaskd/28: #0: ffffffff8c799100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6559 1 lock held by khugepaged/34: #0: ffffffff8c89d168 (lock#3){+.+.}-{3:3}, at: __lru_add_drain_all+0x62/0x6a0 mm/swap.c:852 2 locks held by getty/4762: #0: ffff88802857e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2176 7 locks held by kworker/1:9/5122: 3 locks held by kworker/0:11/5463: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1324 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2376 #1: ffffc9000716fdb0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2380 #2: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xf/0x70 net/core/link_watch.c:277 3 locks held by kworker/0:13/5467: #0: ffff888142322d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888142322d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888142322d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1324 [inline] #0: ffff888142322d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline] #0: ffff888142322d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline] #0: ffff888142322d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2376 #1: ffffc90006f9fdb0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2380 #2: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4630 3 locks held by kworker/u4:8/11386: #0: ffff888014267938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888014267938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888014267938 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1324 [inline] #0: ffff888014267938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline] #0: ffff888014267938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline] #0: ffff888014267938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2376 #1: ffffc9002f7cfdb0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2380 #2: ffffffff8e105a50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9f/0xb10 net/core/net_namespace.c:576 2 locks held by syz-executor.2/11105: #0: ffffffff8e105a50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x311/0x6c0 net/core/net_namespace.c:487 #1: ffffffff8c7a4578 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] #1: ffffffff8c7a4578 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x64a/0x770 kernel/rcu/tree_exp.h:992 1 lock held by syz-executor.1/11118: #0: ffffffff8e105a50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x311/0x6c0 net/core/net_namespace.c:487 1 lock held by syz-executor.4/11121: #0: ffffffff8e105a50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x311/0x6c0 net/core/net_namespace.c:487 1 lock held by syz-executor.5/11133: #0: ffffffff8c7a4578 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline] #0: ffffffff8c7a4578 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e8/0x770 kernel/rcu/tree_exp.h:992 1 lock held by syz-executor.1/11182: #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.4/11183: #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.2/11187: #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by dhcpcd/11192: #0: ffff8880af638130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff8880af638130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11202: #0: ffff888086b06130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888086b06130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by syz-executor.5/11203: #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by dhcpcd/11205: #0: ffff888083a44130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888083a44130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11206: #0: ffff888076f10130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888076f10130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11207: #0: ffff8880812d4130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff8880812d4130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11208: #0: ffff88803a670130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88803a670130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11209: #0: ffff88807bc48130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88807bc48130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11210: #0: ffff888083076130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888083076130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11211: #0: ffff88802e5e2130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88802e5e2130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11212: #0: ffff888035c26130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888035c26130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11213: #0: ffff888025090130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888025090130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11214: #0: ffff88803790e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88803790e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11215: #0: ffff888014ae4130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888014ae4130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11216: #0: ffff888035c2c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888035c2c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11217: #0: ffff888080294130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888080294130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11218: #0: ffff88809a414130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88809a414130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11219: #0: ffff888047602130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888047602130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11220: #0: ffff88802b218130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88802b218130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11221: #0: ffff8880a3712130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff8880a3712130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11222: #0: ffff88814c364130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88814c364130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11223: #0: ffff8880872c6130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff8880872c6130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11225: #0: ffff88802ff3c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88802ff3c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11228: #0: ffff88807d6cc130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88807d6cc130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by syz-executor.4/11230: #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by dhcpcd/11233: #0: ffff88808914e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88808914e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by syz-executor.1/11236: #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by syz-executor.2/11238: #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by dhcpcd/11240: #0: ffff888093cf8130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888093cf8130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by syz-executor.5/11241: #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421 1 lock held by dhcpcd/11243: #0: ffff8880a8bfc130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff8880a8bfc130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11244: #0: ffff888080712130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888080712130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11245: #0: ffff888048a54130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888048a54130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11246: #0: ffff88809c2de130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88809c2de130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11247: #0: ffff8880a5846130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff8880a5846130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11248: #0: ffff8880b38cc130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff8880b38cc130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11249: #0: ffff8880b2c06130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff8880b2c06130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11250: #0: ffff8880b41e0130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff8880b41e0130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11251: #0: ffff888062edc130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888062edc130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11252: #0: ffff888087716130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888087716130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11253: #0: ffff8880aa32e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff8880aa32e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11254: #0: ffff888048e14130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888048e14130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11255: #0: ffff8880b3450130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff8880b3450130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11256: #0: ffff88807eb0a130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88807eb0a130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11257: #0: ffff8880831a8130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff8880831a8130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11258: #0: ffff88807c480130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88807c480130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11259: #0: ffff88807c486130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff88807c486130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11260: #0: ffff888080e72130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888080e72130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 1 lock held by dhcpcd/11261: #0: ffff888083ec6130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline] #0: ffff888083ec6130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc7-syzkaller-01944-g3674fbf0451d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xe16/0x1090 kernel/hung_task.c:379 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5122 Comm: kworker/1:9 Not tainted 6.4.0-rc7-syzkaller-01944-g3674fbf0451d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Workqueue: events cfg80211_wiphy_work RIP: 0010:stack_trace_save+0xf/0xc0 kernel/stacktrace.c:119 Code: 5c c3 48 89 3c 24 e8 b0 f2 64 00 48 8b 3c 24 eb a6 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 53 <83> c2 01 31 c9 48 83 c4 80 48 89 e3 48 c7 04 24 b3 8a b5 41 48 c7 RSP: 0018:ffffc900001e0878 EFLAGS: 00000286 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000040 RDI: ffffc900001e0888 RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000 R10: ffffed10128f0ec8 R11: ffff888094787640 R12: 0000000000020820 R13: ffff88814325e500 R14: 0000000000000000 R15: 0000000000020820 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3207a5f0e8 CR3: 000000003f55d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x7f/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:711 [inline] slab_alloc_node mm/slub.c:3451 [inline] kmem_cache_alloc_node+0x185/0x3e0 mm/slub.c:3496 __alloc_skb+0x288/0x330 net/core/skbuff.c:634 __netdev_alloc_skb+0x74/0x410 net/core/skbuff.c:708 netdev_alloc_skb include/linux/skbuff.h:3212 [inline] dev_alloc_skb include/linux/skbuff.h:3225 [inline] __ieee80211_beacon_get+0xbf2/0x1680 net/mac80211/tx.c:5425 ieee80211_beacon_get_tim+0xa1/0x550 net/mac80211/tx.c:5547 ieee80211_beacon_get include/net/mac80211.h:5418 [inline] mac80211_hwsim_beacon_tx+0x40c/0x750 drivers/net/wireless/virtual/mac80211_hwsim.c:2261 __iterate_interfaces+0x2c8/0x570 net/mac80211/util.c:766 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 net/mac80211/util.c:802 mac80211_hwsim_beacon+0x101/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2291 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x5fa/0xbe0 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x17f/0x360 kernel/time/hrtimer.c:1766 __do_softirq+0x1d4/0x905 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:lock_acquire+0x1f5/0x520 kernel/locking/lockdep.c:5673 Code: 98 9c 7e 83 f8 01 0f 85 b9 02 00 00 9c 58 f6 c4 02 0f 85 a4 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffffc9000599f7f0 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff92000b33f00 RCX: 0000000000012194 RDX: 1ffff110043eb8c8 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff91537d6f R10: fffffbfff22a6fad R11: 0000000000094001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88802e49cd40 R15: 0000000000000000 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x12f/0x1350 kernel/locking/mutex.c:747 sdata_lock net/mac80211/ieee80211_i.h:1135 [inline] ieee80211_ibss_rx_queued_mgmt+0x113/0x3080 net/mac80211/ibss.c:1631 ieee80211_iface_process_skb net/mac80211/iface.c:1604 [inline] ieee80211_iface_work+0xa4a/0xd70 net/mac80211/iface.c:1658 cfg80211_wiphy_work+0x253/0x330 net/wireless/core.c:435 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308