================================================================== BUG: KASAN: slab-use-after-free in kobject_get+0x124/0x144 lib/kobject.c:639 Read of size 1 at addr ffff0000dddc0d1c by task syz.8.532/7004 CPU: 1 UID: 0 PID: 7004 Comm: syz.8.532 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 print_address_description+0xb0/0x238 mm/kasan/report.c:378 print_report+0x68/0x84 mm/kasan/report.c:482 kasan_report+0x8c/0xc4 mm/kasan/report.c:595 __asan_report_load1_noabort+0x20/0x2c mm/kasan/report_generic.c:378 kobject_get+0x124/0x144 lib/kobject.c:639 get_device drivers/base/core.c:3802 [inline] device_add+0x1f8/0x9e4 drivers/base/core.c:3614 netdev_register_kobject+0x15c/0x2e0 net/core/net-sysfs.c:2343 register_netdevice+0xe34/0x1588 net/core/dev.c:11420 register_netdev+0x4c/0x68 net/core/dev.c:11536 bnep_add_connection+0x4b0/0x918 net/bluetooth/bnep/core.c:624 do_bnep_sock_ioctl+0x3c4/0x64c net/bluetooth/bnep/sock.c:83 bnep_sock_ioctl+0x28/0x38 net/bluetooth/bnep/sock.c:139 sock_do_ioctl+0x100/0x254 net/socket.c:1313 sock_ioctl+0x558/0x7e8 net/socket.c:1434 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x25c arch/arm64/kernel/entry-common.c:723 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:742 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 Allocated by task 4669: kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:78 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:570 poison_kmalloc_redzone mm/kasan/common.c:398 [inline] __kasan_kmalloc+0x9c/0xb4 mm/kasan/common.c:415 kasan_kmalloc include/linux/kasan.h:263 [inline] __kmalloc_cache_noprof+0x284/0x56c mm/slub.c:5415 kmalloc_noprof include/linux/slab.h:950 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] __hci_conn_add+0x2e4/0x17e0 net/bluetooth/hci_conn.c:963 hci_conn_add_unset+0x80/0x124 net/bluetooth/hci_conn.c:1090 hci_conn_request_evt+0x350/0x910 net/bluetooth/hci_event.c:3333 hci_event_func net/bluetooth/hci_event.c:7773 [inline] hci_event_packet+0x5c4/0xa00 net/bluetooth/hci_event.c:7824 hci_rx_work+0x2fc/0xd1c net/bluetooth/hci_core.c:4077 process_one_work+0x78c/0x173c kernel/workqueue.c:3302 process_scheduled_works+0xdc/0x13c kernel/workqueue.c:3385 worker_thread+0x770/0xbd0 kernel/workqueue.c:3466 kthread+0x2f0/0x3c0 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 Freed by task 7008: kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:78 kasan_save_free_info+0x58/0x70 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:253 [inline] __kasan_slab_free+0x74/0xa4 mm/kasan/common.c:285 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2689 [inline] slab_free mm/slub.c:6246 [inline] kfree+0x188/0x5e4 mm/slub.c:6561 bt_link_release+0x20/0x30 net/bluetooth/hci_sysfs.c:16 device_release+0xa8/0x1c8 drivers/base/core.c:-1 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1dc/0x4bc lib/kobject.c:737 put_device drivers/base/core.c:3814 [inline] device_unregister+0x3c/0xf0 drivers/base/core.c:3937 hci_conn_del_sysfs+0xf0/0x194 net/bluetooth/hci_sysfs.c:79 hci_conn_cleanup net/bluetooth/hci_conn.c:173 [inline] hci_conn_del+0x9bc/0xf04 net/bluetooth/hci_conn.c:1240 hci_conn_hash_flush+0x17c/0x238 net/bluetooth/hci_conn.c:2651 hci_dev_close_sync+0x5bc/0xd88 net/bluetooth/hci_sync.c:5368 hci_dev_do_close+0x34/0xb8 net/bluetooth/hci_core.c:502 hci_dev_close+0xd0/0x1c8 net/bluetooth/hci_core.c:527 hci_sock_ioctl+0x4f8/0x768 net/bluetooth/hci_sock.c:1135 sock_do_ioctl+0x100/0x254 net/socket.c:1313 sock_ioctl+0x558/0x7e8 net/socket.c:1434 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x25c arch/arm64/kernel/entry-common.c:723 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:742 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 Last potentially related work creation: kasan_save_stack+0x40/0x6c mm/kasan/common.c:57 kasan_record_aux_stack+0xb0/0xc8 mm/kasan/generic.c:556 insert_work+0x54/0x1a0 kernel/workqueue.c:2226 __queue_work+0xd54/0x12f8 kernel/workqueue.c:2381 __queue_delayed_work+0xf4/0x2b4 kernel/workqueue.c:2548 queue_delayed_work_on+0xcc/0x140 kernel/workqueue.c:2600 queue_delayed_work include/linux/workqueue.h:711 [inline] hci_conn_drop+0x174/0x29c include/net/bluetooth/hci_core.h:1712 l2cap_chan_del+0x220/0x48c net/bluetooth/l2cap_core.c:672 l2cap_conn_del+0x2c0/0x440 net/bluetooth/l2cap_core.c:1802 l2cap_disconn_cfm+0x90/0x100 net/bluetooth/l2cap_core.c:7448 hci_disconn_cfm include/net/bluetooth/hci_core.h:2154 [inline] hci_conn_hash_flush+0x108/0x238 net/bluetooth/hci_conn.c:2650 hci_dev_close_sync+0x5bc/0xd88 net/bluetooth/hci_sync.c:5368 hci_dev_do_close+0x34/0xb8 net/bluetooth/hci_core.c:502 hci_dev_close+0xd0/0x1c8 net/bluetooth/hci_core.c:527 hci_sock_ioctl+0x4f8/0x768 net/bluetooth/hci_sock.c:1135 sock_do_ioctl+0x100/0x254 net/socket.c:1313 sock_ioctl+0x558/0x7e8 net/socket.c:1434 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x25c arch/arm64/kernel/entry-common.c:723 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:742 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 The buggy address belongs to the object at ffff0000dddc0000 which belongs to the cache kmalloc-8k of size 8192 The buggy address is located 3356 bytes inside of freed 8192-byte region [ffff0000dddc0000, ffff0000dddc2000) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11ddc0 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff) page_type: f5(slab) raw: 05ffc00000000040 ffff0000c0002280 dead000000000100 dead000000000122 raw: 0000000000000000 0000000800020002 00000000f5000000 0000000000000000 head: 05ffc00000000040 ffff0000c0002280 dead000000000100 dead000000000122 head: 0000000000000000 0000000800020002 00000000f5000000 0000000000000000 head: 05ffc00000000003 fffffdffc3777001 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000dddc0c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000dddc0c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000dddc0d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000dddc0d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000dddc0e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== ------------[ cut here ]------------ refcount_t: addition on 0; use-after-free. WARNING: lib/refcount.c:25 at refcount_warn_saturate+0x134/0x1f8 lib/refcount.c:25, CPU#1: syz.8.532/7004 Modules linked in: CPU: 1 UID: 0 PID: 7004 Comm: syz.8.532 Tainted: G B L syzkaller #0 PREEMPT Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : refcount_warn_saturate+0x134/0x1f8 lib/refcount.c:25 lr : refcount_warn_saturate+0x134/0x1f8 lib/refcount.c:25 sp : ffff8000942b75e0 x29: ffff8000942b75e0 x28: 0000000000000000 x27: dfff800000000000 x26: 1fffe000194d84eb x25: dfff800000000000 x24: 1fffe000194d84e2 x23: 1fffe000194d84ec x22: 0000000000000000 x21: 0000000000000000 x20: ffff0000dddc0d18 x19: ffff800089f06000 x18: 1fffe00035c25820 x17: ffff8000888db000 x16: ffff80008898cfc0 x15: ffff0001ae12c10c x14: ffff0001ae12c108 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000001020 x10: 0000000000080000 x9 : 5f7e7d1afdf03300 x8 : 5f7e7d1afdf03300 x7 : 0000000000000000 x6 : ffff8000804886d0 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000802f13b0 x2 : 0000000100000000 x1 : ffff0000d8453a00 x0 : 0000000000000001 Call trace: refcount_warn_saturate+0x134/0x1f8 lib/refcount.c:25 (P) __refcount_add include/linux/refcount.h:-1 [inline] __refcount_inc include/linux/refcount.h:366 [inline] refcount_inc include/linux/refcount.h:383 [inline] kref_get include/linux/kref.h:45 [inline] kobject_get+0x10c/0x144 lib/kobject.c:643 get_device drivers/base/core.c:3802 [inline] device_add+0x1f8/0x9e4 drivers/base/core.c:3614 netdev_register_kobject+0x15c/0x2e0 net/core/net-sysfs.c:2343 register_netdevice+0xe34/0x1588 net/core/dev.c:11420 register_netdev+0x4c/0x68 net/core/dev.c:11536 bnep_add_connection+0x4b0/0x918 net/bluetooth/bnep/core.c:624 do_bnep_sock_ioctl+0x3c4/0x64c net/bluetooth/bnep/sock.c:83 bnep_sock_ioctl+0x28/0x38 net/bluetooth/bnep/sock.c:139 sock_do_ioctl+0x100/0x254 net/socket.c:1313 sock_ioctl+0x558/0x7e8 net/socket.c:1434 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x25c arch/arm64/kernel/entry-common.c:723 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:742 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 irq event stamp: 689 hardirqs last enabled at (689): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1644 [inline] hardirqs last enabled at (689): [] finish_lock_switch+0x160/0x204 kernel/sched/core.c:5124 hardirqs last disabled at (688): [] __schedule+0x308/0x2d24 kernel/sched/core.c:7042 softirqs last enabled at (572): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (570): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ refcount_t: saturated; leaking memory. WARNING: lib/refcount.c:22 at refcount_warn_saturate+0x1b4/0x1f8 lib/refcount.c:22, CPU#1: syz.8.532/7004 Modules linked in: CPU: 1 UID: 0 PID: 7004 Comm: syz.8.532 Tainted: G B W L syzkaller #0 PREEMPT Tainted: [B]=BAD_PAGE, [W]=WARN, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : refcount_warn_saturate+0x1b4/0x1f8 lib/refcount.c:22 lr : refcount_warn_saturate+0x1b4/0x1f8 lib/refcount.c:22 sp : ffff8000942b7390 x29: ffff8000942b7390 x28: 1fffe0001a2d9473 x27: dfff800000000000 x26: 1fffe0001a2d9470 x25: ffff0000d16ca398 x24: dfff800000000000 x23: ffff8000942b7520 x22: 000000007ffffffe x21: 00000000c0000000 x20: ffff0000dddc0d18 x19: ffff800089f06000 x18: 1fffe00035c25820 x17: ffff8000888db000 x16: ffff80008898cfc0 x15: ffff800080c9c548 x14: ffff800084a9b814 x13: 0000000000000001 x12: 0000000000000000 x11: 000000000000106e x10: 0000000000080000 x9 : 5f7e7d1afdf03300 x8 : 5f7e7d1afdf03300 x7 : 0000000000000000 x6 : ffff8000804886d0 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000802f13b0 x2 : 0000000100000000 x1 : ffff0000d8453a00 x0 : 0000000000000001 Call trace: refcount_warn_saturate+0x1b4/0x1f8 lib/refcount.c:22 (P) __refcount_add include/linux/refcount.h:-1 [inline] __refcount_inc include/linux/refcount.h:366 [inline] refcount_inc include/linux/refcount.h:383 [inline] kref_get include/linux/kref.h:45 [inline] kobject_get+0x10c/0x144 lib/kobject.c:643 kobject_add_internal+0x98/0x6e8 lib/kobject.c:225 kobject_add_varg+0x98/0xe4 lib/kobject.c:374 kobject_add+0x110/0x1cc lib/kobject.c:426 class_dir_create_and_add drivers/base/core.c:3234 [inline] get_device_parent+0x2c4/0x34c drivers/base/core.c:3285 device_add+0x294/0x9e4 drivers/base/core.c:3615 netdev_register_kobject+0x15c/0x2e0 net/core/net-sysfs.c:2343 register_netdevice+0xe34/0x1588 net/core/dev.c:11420 register_netdev+0x4c/0x68 net/core/dev.c:11536 bnep_add_connection+0x4b0/0x918 net/bluetooth/bnep/core.c:624 do_bnep_sock_ioctl+0x3c4/0x64c net/bluetooth/bnep/sock.c:83 bnep_sock_ioctl+0x28/0x38 net/bluetooth/bnep/sock.c:139 sock_do_ioctl+0x100/0x254 net/socket.c:1313 sock_ioctl+0x558/0x7e8 net/socket.c:1434 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x25c arch/arm64/kernel/entry-common.c:723 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:742 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 irq event stamp: 689 hardirqs last enabled at (689): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1644 [inline] hardirqs last enabled at (689): [] finish_lock_switch+0x160/0x204 kernel/sched/core.c:5124 hardirqs last disabled at (688): [] __schedule+0x308/0x2d24 kernel/sched/core.c:7042 softirqs last enabled at (572): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (570): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ refcount_t: underflow; use-after-free. WARNING: lib/refcount.c:28 at refcount_warn_saturate+0x154/0x1f8 lib/refcount.c:28, CPU#1: syz.8.532/7004 Modules linked in: CPU: 1 UID: 0 PID: 7004 Comm: syz.8.532 Tainted: G B W L syzkaller #0 PREEMPT Tainted: [B]=BAD_PAGE, [W]=WARN, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : refcount_warn_saturate+0x154/0x1f8 lib/refcount.c:28 lr : refcount_warn_saturate+0x154/0x1f8 lib/refcount.c:28 sp : ffff8000942b7350 x29: ffff8000942b7350 x28: 1fffe0001a2d9473 x27: 1fffe0001bbb81a3 x26: 1fffe0001bbb819c x25: dfff800000000000 x24: ffff800086ddab60 x23: ffff0000dddc0d1c x22: 00000000fffffffe x21: 00000000c0000000 x20: ffff0000dddc0d18 x19: ffff800089f06000 x18: 1fffe00035c25820 x17: ffff8000888db000 x16: ffff80008898cfc0 x15: ffff800080c9c548 x14: ffff800084a9b814 x13: 0000000000000001 x12: 0000000000000000 x11: 00000000000010c0 x10: 0000000000080000 x9 : 5f7e7d1afdf03300 x8 : 5f7e7d1afdf03300 x7 : 0000000000000000 x6 : ffff8000804886d0 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000802f13b0 x2 : 0000000100000000 x1 : ffff0000d8453a00 x0 : 0000000000000001 Call trace: refcount_warn_saturate+0x154/0x1f8 lib/refcount.c:28 (P) __refcount_sub_and_test include/linux/refcount.h:400 [inline] __refcount_dec_and_test include/linux/refcount.h:432 [inline] refcount_dec_and_test include/linux/refcount.h:450 [inline] kref_put include/linux/kref.h:64 [inline] kobject_put+0x25c/0x4bc lib/kobject.c:737 kobject_add_internal+0x498/0x6e8 lib/kobject.c:243 kobject_add_varg+0x98/0xe4 lib/kobject.c:374 kobject_add+0x110/0x1cc lib/kobject.c:426 class_dir_create_and_add drivers/base/core.c:3234 [inline] get_device_parent+0x2c4/0x34c drivers/base/core.c:3285 device_add+0x294/0x9e4 drivers/base/core.c:3615 netdev_register_kobject+0x15c/0x2e0 net/core/net-sysfs.c:2343 register_netdevice+0xe34/0x1588 net/core/dev.c:11420 register_netdev+0x4c/0x68 net/core/dev.c:11536 bnep_add_connection+0x4b0/0x918 net/bluetooth/bnep/core.c:624 do_bnep_sock_ioctl+0x3c4/0x64c net/bluetooth/bnep/sock.c:83 bnep_sock_ioctl+0x28/0x38 net/bluetooth/bnep/sock.c:139 sock_do_ioctl+0x100/0x254 net/socket.c:1313 sock_ioctl+0x558/0x7e8 net/socket.c:1434 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x25c arch/arm64/kernel/entry-common.c:723 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:742 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 irq event stamp: 689 hardirqs last enabled at (689): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1644 [inline] hardirqs last enabled at (689): [] finish_lock_switch+0x160/0x204 kernel/sched/core.c:5124 hardirqs last disabled at (688): [] __schedule+0x308/0x2d24 kernel/sched/core.c:7042 softirqs last enabled at (572): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (570): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- kobject: kobject_add_internal failed for net (error: -2 parent: €g‚ä)