list_del corruption. next->prev should be ffff0000c922ccc8, but was 0000000000000000. (next=ffff00010f5b42c8) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:64! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 3074 Comm: kworker/u5:2 Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 Workqueue: hci5 hci_error_reset pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __list_del_entry_valid+0xcc/0xd0 lib/list_debug.c:62 lr : __list_del_entry_valid+0xcc/0xd0 lib/list_debug.c:62 sp : ffff80001284bb10 x29: ffff80001284bb10 x28: ffff80000d28b000 x27: ffff0000c7069a25 x26: 0000000000000000 x25: 0000000000000000 x24: ffff0000c0db8b00 x23: ffff0000c6130000 x22: ffff800009a50d84 x21: ffff0000c0f30149 x20: ffff0000c922ccc0 x19: ffff0000c922ccd8 x18: 00000000000000c0 x17: 20747562202c3863 x16: ffff80000db49158 x15: ffff0000c6130000 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c6130000 x11: ff808000081c0d5c x10: 0000000000000000 x9 : ed2ab3dd0291bc00 x8 : ed2ab3dd0291bc00 x7 : ffff80000819545c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001fefddcd0 x1 : 0000000100000001 x0 : 000000000000006d Call trace: __list_del_entry_valid+0xcc/0xd0 lib/list_debug.c:62 __list_del_entry include/linux/list.h:134 [inline] list_del include/linux/list.h:148 [inline] klist_release lib/klist.c:189 [inline] kref_put+0x6c/0x1d0 include/linux/kref.h:65 klist_dec_and_del lib/klist.c:206 [inline] klist_put lib/klist.c:217 [inline] klist_del+0x58/0xb0 lib/klist.c:230 device_del+0x280/0x5bc drivers/base/core.c:3699 hci_conn_del_sysfs+0xb0/0xfc net/bluetooth/hci_sysfs.c:78 hci_conn_cleanup+0x2d4/0x380 net/bluetooth/hci_conn.c:147 hci_conn_del+0x144/0x2a8 net/bluetooth/hci_conn.c:1022 hci_conn_hash_flush+0xe8/0x148 net/bluetooth/hci_conn.c:2367 hci_dev_close_sync+0x48c/0x9e0 net/bluetooth/hci_sync.c:4476 hci_dev_do_close net/bluetooth/hci_core.c:554 [inline] hci_error_reset+0xac/0x154 net/bluetooth/hci_core.c:1050 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Code: d4210000 d001b460 91358800 94a76153 (d4210000) ---[ end trace 0000000000000000 ]---