------------[ cut here ]------------ sysfs group 'byte_queue_limits' not found for kobject 'tx-0' WARNING: CPU: 1 PID: 5531 at fs/sysfs/group.c:280 sysfs_remove_group+0x16c/0x278 fs/sysfs/group.c:278 Modules linked in: CPU: 1 PID: 5531 Comm: kworker/1:10 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: events delete_netdev pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : sysfs_remove_group+0x16c/0x278 fs/sysfs/group.c:278 lr : sysfs_remove_group+0x16c/0x278 fs/sysfs/group.c:278 sp : ffff800022e777b0 x29: ffff800022e777b0 x28: 1fffe0001b37a0ca x27: dfff800000000000 x26: 1fffe0001b37a088 x25: 00000000ffffffff x24: 1ffff0000278d4f4 x23: dfff800000000000 x22: ffff0000cd80fc00 x21: ffff0000cd80fc20 x20: ffff0000cbca3740 x19: ffff800013c6aea0 x18: 1fffe00033c1c97e x17: 0000000000000000 x16: ffff800011bcac18 x15: 0000000000000000 x14: 0000000000000001 x13: 1fffe00033c1c9a3 x12: 0000000000000000 x11: ff00800008195f68 x10: 0000000000000000 x9 : e240911048010b00 x8 : e240911048010b00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800022e77238 x4 : ffff800016504f40 x3 : ffff800008542ee8 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: sysfs_remove_group+0x16c/0x278 fs/sysfs/group.c:278 netdev_queue_update_kobjects+0x3b4/0x444 net/core/net-sysfs.c:1729 remove_queue_kobjects net/core/net-sysfs.c:1828 [inline] netdev_unregister_kobject+0xf0/0x204 net/core/net-sysfs.c:1981 unregister_netdevice_many_notify+0x1300/0x1900 net/core/dev.c:11051 unregister_netdevice_many net/core/dev.c:11077 [inline] unregister_netdevice_queue+0x2bc/0x310 net/core/dev.c:10960 unregister_netdevice include/linux/netdevice.h:3080 [inline] lowpan_unregister_netdevice net/6lowpan/core.c:66 [inline] lowpan_unregister_netdev+0x28/0x3c net/6lowpan/core.c:74 unregister_dev+0x78/0x1c8 net/bluetooth/6lowpan.c:763 delete_netdev+0x20/0x30 net/bluetooth/6lowpan.c:773 process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292 worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439 kthread+0x254/0x2e0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 15512 hardirqs last enabled at (15511): [] __up_console_sem+0xb4/0xfc kernel/printk/printk.c:261 hardirqs last disabled at (15512): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (15418): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (15418): [] netif_addr_unlock_bh include/linux/netdevice.h:4508 [inline] softirqs last enabled at (15418): [] dev_mc_flush+0x1b8/0x200 net/core/dev_addr_lists.c:1036 softirqs last disabled at (15416): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ sysfs group 'power' not found for kobject 'bt0' WARNING: CPU: 1 PID: 5531 at fs/sysfs/group.c:280 sysfs_remove_group+0x16c/0x278 fs/sysfs/group.c:278 Modules linked in: CPU: 1 PID: 5531 Comm: kworker/1:10 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: events delete_netdev pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : sysfs_remove_group+0x16c/0x278 fs/sysfs/group.c:278 lr : sysfs_remove_group+0x16c/0x278 fs/sysfs/group.c:278 sp : ffff800022e77730 x29: ffff800022e77730 x28: ffff0000cc9f97f8 x27: ffff0000d9bd0000 x26: 1fffe0001b37a0d9 x25: dfff800000000000 x24: 1ffff00002585464 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000d9bd0680 x20: ffff0000f6413d98 x19: ffff800012c2a300 x18: 1fffe00033c1c97e x17: 0000000000000000 x16: ffff800011bcac18 x15: 0000000000000000 x14: 0000000000000001 x13: 1fffe00033c1c9a3 x12: 0000000000000000 x11: ff00800008195f68 x10: 0000000000000000 x9 : e240911048010b00 x8 : e240911048010b00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800022e771b8 x4 : ffff800016504f40 x3 : ffff800008542ee8 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: sysfs_remove_group+0x16c/0x278 fs/sysfs/group.c:278 dpm_sysfs_remove+0xa0/0xc8 drivers/base/power/sysfs.c:837 device_del+0x25c/0x990 drivers/base/core.c:3877 netdev_unregister_kobject+0x13c/0x204 net/core/net-sysfs.c:1985 unregister_netdevice_many_notify+0x1300/0x1900 net/core/dev.c:11051 unregister_netdevice_many net/core/dev.c:11077 [inline] unregister_netdevice_queue+0x2bc/0x310 net/core/dev.c:10960 unregister_netdevice include/linux/netdevice.h:3080 [inline] lowpan_unregister_netdevice net/6lowpan/core.c:66 [inline] lowpan_unregister_netdev+0x28/0x3c net/6lowpan/core.c:74 unregister_dev+0x78/0x1c8 net/bluetooth/6lowpan.c:763 delete_netdev+0x20/0x30 net/bluetooth/6lowpan.c:773 process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292 worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439 kthread+0x254/0x2e0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 15912 hardirqs last enabled at (15911): [] __up_console_sem+0xb4/0xfc kernel/printk/printk.c:261 hardirqs last disabled at (15912): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (15798): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (15798): [] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624 softirqs last disabled at (15515): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ sysfs group 'statistics' not found for kobject 'bt0' WARNING: CPU: 1 PID: 5531 at fs/sysfs/group.c:280 sysfs_remove_group+0x16c/0x278 fs/sysfs/group.c:278 Modules linked in: CPU: 1 PID: 5531 Comm: kworker/1:10 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: events delete_netdev pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : sysfs_remove_group+0x16c/0x278 fs/sysfs/group.c:278 lr : sysfs_remove_group+0x16c/0x278 fs/sysfs/group.c:278 sp : ffff800022e77670 x29: ffff800022e77670 x28: ffff0000cc9f97f8 x27: 1fffe0001b37a159 x26: 1fffe0001b37a15e x25: ffff0000d9bd0af0 x24: 1ffff0000278d510 x23: dfff800000000000 x22: dfff800000000000 x21: ffff0000d9bd0680 x20: ffff0000f6413d98 x19: ffff800013c6b720 x18: 1fffe00033c1c97e x17: ffff80001641d000 x16: ffff8000082dd38c x15: ffff80001173f264 x14: 0000000000000001 x13: 1ffff00002d90e5e x12: 0000000000000000 x11: ff0080000a982760 x10: 0000000000000003 x9 : e240911048010b00 x8 : e240911048010b00 x7 : ffff800010eceabc x6 : ffff800010ecb9d0 x5 : ffff0000cacaeb80 x4 : ffff800022e770c8 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff800011d2dc80 x0 : ffff800187d6e000 Call trace: sysfs_remove_group+0x16c/0x278 fs/sysfs/group.c:278 sysfs_remove_groups+0x5c/0xb4 fs/sysfs/group.c:312 device_remove_groups drivers/base/core.c:2759 [inline] device_remove_attrs+0x188/0x238 drivers/base/core.c:2973 device_del+0x578/0x990 drivers/base/core.c:3899 netdev_unregister_kobject+0x13c/0x204 net/core/net-sysfs.c:1985 unregister_netdevice_many_notify+0x1300/0x1900 net/core/dev.c:11051 unregister_netdevice_many net/core/dev.c:11077 [inline] unregister_netdevice_queue+0x2bc/0x310 net/core/dev.c:10960 unregister_netdevice include/linux/netdevice.h:3080 [inline] lowpan_unregister_netdevice net/6lowpan/core.c:66 [inline] lowpan_unregister_netdev+0x28/0x3c net/6lowpan/core.c:74 unregister_dev+0x78/0x1c8 net/bluetooth/6lowpan.c:763 delete_netdev+0x20/0x30 net/bluetooth/6lowpan.c:773 process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292 worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439 kthread+0x254/0x2e0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 16352 hardirqs last enabled at (16351): [] call_rcu+0x5d8/0x958 kernel/rcu/tree.c:2884 hardirqs last disabled at (16352): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (16324): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (16324): [] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624 softirqs last disabled at (16169): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---