INFO: task syz.5.264:7963 blocked for more than 143 seconds. Not tainted 6.16.0-rc4-syzkaller-g3c795c3404e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.264 state:D stack:0 pid:7963 tgid:7961 ppid:7482 task_flags:0x440140 flags:0x00000011 Call trace: __swi __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 xlog_grant_head_wait+0x400/0xae8 fs/xfs/xfs_log.c:267 xlog_grant_head_check+0x210/0x394 fs/xfs/xfs_log.c:-1 xfs_log_reserve+0x2c0/0x898 fs/xfs/xfs_log.c:437 xfs_trans_reserve+0x1c8/0x568 fs/xfs/xfs_trans.c:196 xfs_trans_alloc+0x3e0/0x85c fs/xfs/xfs_trans.c:284 xfs_trans_alloc_inode+0x108/0x42c fs/xfs/xfs_trans.c:1096 xfs_attr_set+0x6d8/0x1020 fs/xfs/libxfs/xfs_attr.c:1098 xfs_attr_change+0x254/0x334 fs/xfs/xfs_xattr.c:128 xfs_xattr_set+0x120/0x200 fs/xfs/xfs_xattr.c:186 __vfs_setxattr+0x3d8/0x400 fs/xattr.c:200 __vfs_setxattr_noperm+0x120/0x5c4 fs/xattr.c:234 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:295 vfs_setxattr+0x158/0x2ac fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0x20c/0x4f8 fs/xattr.c:665 path_setxattrat+0x2e8/0x320 fs/xattr.c:713 __do_sys_setxattr fs/xattr.c:747 [inline] __se_sys_setxattr fs/xattr.c:743 [inline] __arm64_sys_setxattr+0xc0/0xdc fs/xattr.c:743 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:771 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:790 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz.5.264:8068 blocked for more than 143 seconds. Not tainted 6.16.0-rc4-syzkaller-g3c795c3404e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.264 state:D stack:0 pid:8068 tgid:7961 ppid:7482 task_flags:0x400040 flags:0x00000011 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 rwsem_down_write_slowpath+0xa80/0x10f0 kernel/locking/rwsem.c:1176 __down_write_common kernel/locking/rwsem.c:1304 [inline] __down_write kernel/locking/rwsem.c:1313 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1578 inode_lock include/linux/fs.h:869 [inline] vfs_setxattr+0x138/0x2ac fs/xattr.c:320 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0x20c/0x4f8 fs/xattr.c:665 path_setxattrat+0x2e8/0x320 fs/xattr.c:713 __do_sys_setxattr fs/xattr.c:747 [inline] __se_sys_setxattr fs/xattr.c:743 [inline] __arm64_sys_setxattr+0xc0/0xdc fs/xattr.c:743 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:771 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:790 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz.5.264:8074 blocked for more than 143 seconds. Not tainted 6.16.0-rc4-syzkaller-g3c795c3404e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.264 state:D stack:0 pid:8074 tgid:7961 ppid:7482 task_flags:0x400040 flags:0x00000001 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 rwsem_down_write_slowpath+0xa80/0x10f0 kernel/locking/rwsem.c:1176 __down_write_common kernel/locking/rwsem.c:1304 [inline] __down_write kernel/locking/rwsem.c:1313 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1578 inode_lock include/linux/fs.h:869 [inline] vfs_setxattr+0x138/0x2ac fs/xattr.c:320 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0x20c/0x4f8 fs/xattr.c:665 path_setxattrat+0x2e8/0x320 fs/xattr.c:713 __do_sys_setxattr fs/xattr.c:747 [inline] __se_sys_setxattr fs/xattr.c:743 [inline] __arm64_sys_setxattr+0xc0/0xdc fs/xattr.c:743 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:771 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:790 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz.5.264:8086 blocked for more than 143 seconds. Not tainted 6.16.0-rc4-syzkaller-g3c795c3404e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.264 state:D stack:0 pid:8086 tgid:7961 ppid:7482 task_flags:0x400040 flags:0x00000001 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 rwsem_down_write_slowpath+0xa80/0x10f0 kernel/locking/rwsem.c:1176 __down_write_common kernel/locking/rwsem.c:1304 [inline] __down_write kernel/locking/rwsem.c:1313 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1578 inode_lock include/linux/fs.h:869 [inline] vfs_setxattr+0x138/0x2ac fs/xattr.c:320 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0x20c/0x4f8 fs/xattr.c:665 path_setxattrat+0x2e8/0x320 fs/xattr.c:713 __do_sys_setxattr fs/xattr.c:747 [inline] __se_sys_setxattr fs/xattr.c:743 [inline] __arm64_sys_setxattr+0xc0/0xdc fs/xattr.c:743 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:771 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:790 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz.5.264:8091 blocked for more than 143 seconds. Not tainted 6.16.0-rc4-syzkaller-g3c795c3404e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.264 state:D stack:0 pid:8091 tgid:7961 ppid:7482 task_flags:0x400140 flags:0x00000001 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 rwsem_down_write_slowpath+0xa80/0x10f0 kernel/locking/rwsem.c:1176 __down_write_common kernel/locking/rwsem.c:1304 [inline] __down_write kernel/locking/rwsem.c:1313 [inline] down_write_nested+0xc0/0xcc kernel/locking/rwsem.c:1694 xfs_ilock+0x120/0x3d0 fs/xfs/xfs_inode.c:149 xfs_ilock_iocb fs/xfs/xfs_file.c:200 [inline] xfs_file_buffered_write+0x13c/0x7e8 fs/xfs/xfs_file.c:972 xfs_file_write_iter+0x688/0x954 fs/xfs/xfs_file.c:1131 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x62c/0x97c fs/read_write.c:686 ksys_pwrite64 fs/read_write.c:793 [inline] __do_sys_pwrite64 fs/read_write.c:801 [inline] __se_sys_pwrite64 fs/read_write.c:798 [inline] __arm64_sys_pwrite64+0x170/0x208 fs/read_write.c:798 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:771 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:790 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz.5.264:8116 blocked for more than 143 seconds. Not tainted 6.16.0-rc4-syzkaller-g3c795c3404e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.264 state:D stack:0 pid:8116 tgid:7961 ppid:7482 task_flags:0x440140 flags:0x00000011 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 xlog_grant_head_wait+0x400/0xae8 fs/xfs/xfs_log.c:267 xlog_grant_head_check+0x210/0x394 fs/xfs/xfs_log.c:-1 xfs_log_reserve+0x2c0/0x898 fs/xfs/xfs_log.c:437 xfs_trans_reserve+0x1c8/0x568 fs/xfs/xfs_trans.c:196 xfs_trans_alloc+0x3e0/0x85c fs/xfs/xfs_trans.c:284 xfs_trans_alloc_icreate+0x70/0x1f0 fs/xfs/xfs_trans.c:1213 xfs_create+0x428/0x998 fs/xfs/xfs_inode.c:700 xfs_generic_create+0x2e8/0x8f4 fs/xfs/xfs_iops.c:216 xfs_vn_create+0x44/0x58 fs/xfs/xfs_iops.c:299 lookup_open fs/namei.c:3717 [inline] open_last_lookups fs/namei.c:3816 [inline] path_openat+0x12d8/0x2c40 fs/namei.c:4052 do_filp_open+0x18c/0x36c fs/namei.c:4082 do_sys_openat2+0x11c/0x1b4 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1463 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:771 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:790 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 1 lock held by khungtaskd/32: #0: ffff80008f839e80 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 2 locks held by pr/ttyAMA0/43: 3 locks held by kworker/u8:5/311: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff80009c247bc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:6/525: #0: ffff0000d1de2948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff80009c3f7bc0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 4 locks held by kworker/u8:7/2141: #0: ffff0000c18a2148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a0017bc0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff800092885dd0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf4/0x6c0 net/core/net_namespace.c:662 #3: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by getty/6276: #0: ffff0000d64f10a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b9ce2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 3 locks held by syz.5.264/7963: #0: ffff0000cd252428 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:557 #1: ffff000100de67f0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #1: ffff000100de67f0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 #2: ffff0000cd252618 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0x108/0x42c fs/xfs/xfs_trans.c:1096 2 locks held by syz.5.264/8068: #0: ffff0000cd252428 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:557 #1: ffff000100de67f0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #1: ffff000100de67f0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 2 locks held by syz.5.264/8074: #0: ffff0000cd252428 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:557 #1: ffff000100de67f0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #1: ffff000100de67f0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 2 locks held by syz.5.264/8086: #0: ffff0000cd252428 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:557 #1: ffff000100de67f0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #1: ffff000100de67f0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2ac fs/xattr.c:320 2 locks held by syz.5.264/8091: #0: ffff0000cd252428 (sb_writers#11){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3096 [inline] #0: ffff0000cd252428 (sb_writers#11){.+.+}-{0:0}, at: vfs_write+0x244/0x97c fs/read_write.c:682 #1: ffff000100de67f0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: xfs_ilock+0x120/0x3d0 fs/xfs/xfs_inode.c:149 3 locks held by syz.5.264/8116: #0: ffff0000cd252428 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:557 #1: ffff0000f5f9b1b0 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #1: ffff0000f5f9b1b0 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{4:4}, at: open_last_lookups fs/namei.c:3813 [inline] #1: ffff0000f5f9b1b0 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{4:4}, at: path_openat+0x638/0x2c40 fs/namei.c:4052 #2: ffff0000cd252618 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_icreate+0x70/0x1f0 fs/xfs/xfs_trans.c:1213 3 locks held by syz-executor/10982: #0: ffff8000928f81b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff8000928f7fc8 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffff8000928f7fc8 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffff8000928f7fc8 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0xf4/0x624 net/netlink/genetlink.c:1209 #2: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by syz.6.950/11105: #0: ffff8000928f81b0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff8000928f7fc8 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffff8000928f7fc8 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffff8000928f7fc8 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0xf4/0x624 net/netlink/genetlink.c:1209 2 locks held by syz.7.951/11118: #0: ffff80008f66db50 (&ops->srcu#2){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:160 #1: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x710/0x15dc net/core/rtnetlink.c:4054 1 lock held by syz.7.951/11120: #0: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 1 lock held by syz.7.951/11122: #0: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #0: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x710/0x15dc net/core/rtnetlink.c:4054 1 lock held by syz.3.952/11127: #0: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x5dc/0x97c net/core/rtnetlink.c:6950 1 lock held by syz.3.952/11128: #0: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x5dc/0x97c net/core/rtnetlink.c:6950 1 lock held by syz.3.952/11129: #0: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #0: ffff800092892968 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x710/0x15dc net/core/rtnetlink.c:4054 =============================================