------------[ cut here ]------------ sysfs group 'byte_queue_limits' not found for kobject 'tx-0' WARNING: CPU: 0 PID: 4220 at fs/sysfs/group.c:281 sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:279 Modules linked in: CPU: 0 PID: 4220 Comm: kbnepd bnep0 Not tainted 5.15.170-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:279 lr : sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:279 sp : ffff800020777830 x29: ffff800020777830 x28: 1fffe00018421cbb x27: 0000000000000000 x26: 0000000000000000 x25: 1fffe00018421c88 x24: 1ffff000026c5414 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000edb08018 x20: ffff0000cfab3d98 x19: ffff80001362a780 x18: 0000000000000001 x17: 0000000000000000 x16: ffff800011aba618 x15: 00000000ffffffff x14: ffff0000ccc79b40 x13: 0000000000000001 x12: 0000000000000001 x11: 0000000000000000 x10: 0000000000000000 x9 : 71f99dccc15a9700 x8 : 71f99dccc15a9700 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800020776f98 x4 : ffff800014ba05e0 x3 : ffff800008555e80 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000003c Call trace: sysfs_remove_group+0x174/0x288 fs/sysfs/group.c:279 netdev_queue_update_kobjects+0x388/0x404 net/core/net-sysfs.c:1724 remove_queue_kobjects net/core/net-sysfs.c:1823 [inline] netdev_unregister_kobject+0x100/0x204 net/core/net-sysfs.c:1976 unregister_netdevice_many+0x12c8/0x189c net/core/dev.c:11125 unregister_netdevice_queue net/core/dev.c:11031 [inline] unregister_netdevice include/linux/netdevice.h:3012 [inline] unregister_netdev+0x178/0x1f0 net/core/dev.c:11157 bnep_session+0x2274/0x2424 net/bluetooth/bnep/core.c:525 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 irq event stamp: 8584 hardirqs last enabled at (8583): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257 hardirqs last disabled at (8584): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (8508): [] spin_unlock_bh include/linux/spinlock.h:408 [inline] softirqs last enabled at (8508): [] netif_addr_unlock_bh include/linux/netdevice.h:4617 [inline] softirqs last enabled at (8508): [] dev_mc_flush+0x1b4/0x1f8 net/core/dev_addr_lists.c:1001 softirqs last disabled at (8506): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 397b9a4e2a03ed15 ]--- ================================================================== BUG: KASAN: use-after-free in device_for_each_child+0xa8/0x174 drivers/base/core.c:3731 Read of size 8 at addr ffff0000d6b69388 by task kbnepd bnep0/4220 CPU: 0 PID: 4220 Comm: kbnepd bnep0 Tainted: G W 5.15.170-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x174/0x1e4 mm/kasan/report.c:451 __asan_report_load8_noabort+0x44/0x50 mm/kasan/report_generic.c:309 device_for_each_child+0xa8/0x174 drivers/base/core.c:3731 pm_runtime_set_memalloc_noio+0xf0/0x210 drivers/base/power/runtime.c:246 netdev_unregister_kobject+0x144/0x204 net/core/net-sysfs.c:1978 unregister_netdevice_many+0x12c8/0x189c net/core/dev.c:11125 unregister_netdevice_queue net/core/dev.c:11031 [inline] unregister_netdevice include/linux/netdevice.h:3012 [inline] unregister_netdev+0x178/0x1f0 net/core/dev.c:11157 bnep_session+0x2274/0x2424 net/bluetooth/bnep/core.c:525 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Allocated by task 4153: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xbc/0xfc mm/kasan/common.c:513 __kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc+0x29c/0x4c8 mm/slub.c:4407 kmalloc include/linux/slab.h:596 [inline] kzalloc include/linux/slab.h:721 [inline] hci_alloc_dev_priv+0x30/0x18b0 net/bluetooth/hci_core.c:3775 hci_alloc_dev include/net/bluetooth/hci_core.h:1242 [inline] __vhci_create_device drivers/bluetooth/hci_vhci.c:102 [inline] vhci_create_device+0xf8/0x568 drivers/bluetooth/hci_vhci.c:153 vhci_get_user drivers/bluetooth/hci_vhci.c:210 [inline] vhci_write+0x318/0x3b8 drivers/bluetooth/hci_vhci.c:290 call_write_iter include/linux/fs.h:2174 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x884/0xb44 fs/read_write.c:594 ksys_write+0x15c/0x26c fs/read_write.c:647 __do_sys_write fs/read_write.c:659 [inline] __se_sys_write fs/read_write.c:656 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:656 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Freed by task 4153: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4c/0x84 mm/kasan/common.c:46 kasan_set_free_info+0x28/0x4c mm/kasan/generic.c:360 ____kasan_slab_free+0x118/0x164 mm/kasan/common.c:366 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0x128/0x1ec mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kfree+0x178/0x410 mm/slub.c:4559 hci_release_dev+0x1004/0x116c net/bluetooth/hci_core.c:4096 bt_host_release+0x70/0x88 net/bluetooth/hci_sysfs.c:92 device_release+0x8c/0x1ac kobject_cleanup lib/kobject.c:713 [inline] kobject_release lib/kobject.c:744 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x2c4/0x438 lib/kobject.c:761 put_device+0x28/0x40 drivers/base/core.c:3523 hci_free_dev+0x24/0x34 net/bluetooth/hci_core.c:3895 vhci_release+0x7c/0xc4 drivers/bluetooth/hci_vhci.c:346 __fput+0x1c4/0x800 fs/file_table.c:280 ____fput+0x20/0x30 fs/file_table.c:308 task_work_run+0x130/0x1e4 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x670/0x20bc kernel/exit.c:874 do_group_exit+0x110/0x268 kernel/exit.c:996 get_signal+0x634/0x1550 kernel/signal.c:2900 do_signal arch/arm64/kernel/signal.c:890 [inline] do_notify_resume+0x3d0/0x32b8 arch/arm64/kernel/signal.c:943 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Last potentially related work creation: kasan_save_stack+0x38/0x68 mm/kasan/common.c:38 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348 insert_work+0x64/0x394 kernel/workqueue.c:1366 __queue_work+0xb84/0x114c kernel/workqueue.c:1532 queue_work_on+0xc4/0x17c kernel/workqueue.c:1559 queue_work include/linux/workqueue.h:512 [inline] hci_send_acl+0x7a8/0xaa4 net/bluetooth/hci_core.c:4439 l2cap_do_send+0x238/0x350 l2cap_chan_send+0x190c/0x1e5c l2cap_sock_sendmsg+0x184/0x2a8 net/bluetooth/l2cap_sock.c:1173 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] sock_sendmsg net/socket.c:739 [inline] kernel_sendmsg+0x1c8/0x2a0 net/socket.c:763 bnep_tx_frame net/bluetooth/bnep/core.c:466 [inline] bnep_session+0x1e38/0x2424 net/bluetooth/bnep/core.c:509 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Second to last potentially related work creation: kasan_save_stack+0x38/0x68 mm/kasan/common.c:38 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348 insert_work+0x64/0x394 kernel/workqueue.c:1366 __queue_work+0xb84/0x114c kernel/workqueue.c:1532 queue_work_on+0xc4/0x17c kernel/workqueue.c:1559 queue_work include/linux/workqueue.h:512 [inline] hci_send_acl+0x7a8/0xaa4 net/bluetooth/hci_core.c:4439 l2cap_do_send+0x238/0x350 l2cap_chan_send+0x190c/0x1e5c l2cap_sock_sendmsg+0x184/0x2a8 net/bluetooth/l2cap_sock.c:1173 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] sock_sendmsg net/socket.c:739 [inline] kernel_sendmsg+0x1c8/0x2a0 net/socket.c:763 bnep_tx_frame net/bluetooth/bnep/core.c:466 [inline] bnep_session+0x1e38/0x2424 net/bluetooth/bnep/core.c:509 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 The buggy address belongs to the object at ffff0000d6b68000 which belongs to the cache kmalloc-8k of size 8192 The buggy address is located 5000 bytes inside of 8192-byte region [ffff0000d6b68000, ffff0000d6b6a000) The buggy address belongs to the page: page:0000000078f41fe3 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x116b68 head:0000000078f41fe3 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 0000000100000001 ffff0000c0002c00 raw: 0000000000000000 0000000000020002 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000d6b69280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000d6b69300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000d6b69380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000d6b69400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000d6b69480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== ================================================================================ UBSAN: array-index-out-of-bounds in kernel/locking/qspinlock.c:130:9 index 15079 is out of range for type 'unsigned long[8]' CPU: 0 PID: 4220 Comm: kbnepd bnep0 Tainted: G B W 5.15.170-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0x108/0x15c lib/ubsan.c:282 decode_tail kernel/locking/qspinlock.c:130 [inline] queued_spin_lock_slowpath+0x854/0x938 kernel/locking/qspinlock.c:468 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x334/0x35c kernel/locking/spinlock_debug.c:115 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [inline] _raw_spin_lock_irqsave+0xcc/0x14c kernel/locking/spinlock.c:162 klist_next+0x8c/0x2f4 lib/klist.c:382 next_device drivers/base/core.c:3656 [inline] device_for_each_child+0xc0/0x174 drivers/base/core.c:3735 pm_runtime_set_memalloc_noio+0xf0/0x210 drivers/base/power/runtime.c:246 netdev_unregister_kobject+0x144/0x204 net/core/net-sysfs.c:1978 unregister_netdevice_many+0x12c8/0x189c net/core/dev.c:11125 unregister_netdevice_queue net/core/dev.c:11031 [inline] unregister_netdevice include/linux/netdevice.h:3012 [inline] unregister_netdev+0x178/0x1f0 net/core/dev.c:11157 bnep_session+0x2274/0x2424 net/bluetooth/bnep/core.c:525 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 ================================================================================ Unable to handle kernel paging request at virtual address ffff800014a27700 Mem abort info: ESR = 0x0000000096000047 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x07: level 3 translation fault Data abort info: ISV = 0, ISS = 0x00000047 CM = 0, WnR = 1 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001ae2e0000 [ffff800014a27700] pgd=100000023ffff003, p4d=100000023ffff003, pud=100000023fffe003, pmd=100000023fff9003, pte=0000000000000000 Internal error: Oops: 0000000096000047 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4220 Comm: kbnepd bnep0 Tainted: G B W 5.15.170-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : queued_spin_lock_slowpath+0x36c/0x938 kernel/locking/qspinlock.c:471 lr : decode_tail kernel/locking/qspinlock.c:130 [inline] lr : queued_spin_lock_slowpath+0x854/0x938 kernel/locking/qspinlock.c:468 sp : ffff800020777580 x29: ffff800020777620 x28: 1ffff000040eeebc x27: 0000000000000000 x26: dfff800000000000 x25: ffff7000040eeeb4 x24: 0000000000040000 x23: ffff800014a27700 x22: ffff0001b41a1708 x21: ffff0001b41a1700 x20: ffff800014a27700 x19: ffff0000ec35ac00 x18: 0000000000000002 x17: 0000000000000000 x16: ffff800011aba618 x15: 00000000ffffffff x14: ffff0000ccc79b40 x13: 0000000000000001 x12: ffff700002e22364 x11: 0000000000000001 x10: ffff800014a27700 x9 : 0000000000000000 x8 : 0000000000000000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800020776c78 x4 : ffff800014ba05e0 x3 : ffff80000819c3ec x2 : 0000000000000001 x1 : 0000000000000004 x0 : ffff0001b41a1708 Call trace: queued_spin_lock_slowpath+0x36c/0x938 kernel/locking/qspinlock.c:474 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x334/0x35c kernel/locking/spinlock_debug.c:115 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [inline] _raw_spin_lock_irqsave+0xcc/0x14c kernel/locking/spinlock.c:162 klist_next+0x8c/0x2f4 lib/klist.c:382 next_device drivers/base/core.c:3656 [inline] device_for_each_child+0xc0/0x174 drivers/base/core.c:3735 pm_runtime_set_memalloc_noio+0xf0/0x210 drivers/base/power/runtime.c:246 netdev_unregister_kobject+0x144/0x204 net/core/net-sysfs.c:1978 unregister_netdevice_many+0x12c8/0x189c net/core/dev.c:11125 unregister_netdevice_queue net/core/dev.c:11031 [inline] unregister_netdevice include/linux/netdevice.h:3012 [inline] unregister_netdev+0x178/0x1f0 net/core/dev.c:11157 bnep_session+0x2274/0x2424 net/bluetooth/bnep/core.c:525 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Code: aa1703e0 9417404a aa1603e0 52800081 (f90002f5) ---[ end trace 397b9a4e2a03ed16 ]--- ---------------- Code disassembly (best guess): 0: aa1703e0 mov x0, x23 4: 9417404a bl 0x5d012c 8: aa1603e0 mov x0, x22 c: 52800081 mov w1, #0x4 // #4 * 10: f90002f5 str x21, [x23] <-- trapping instruction