list_del corruption. next->prev should be ffff888021c5b0c8, but was ffff888078a5d0c8. (next=ffff88801b2488c8) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:62! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 29927 Comm: syz-executor.0 Not tainted 6.0.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 RIP: 0010:__list_del_entry_valid.cold+0x70/0x72 lib/list_debug.c:62 Code: f0 ff 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 e0 fb 48 8a e8 82 f6 f0 ff 0f 0b 4c 89 e9 48 89 ee 48 c7 c7 20 fd 48 8a e8 6e f6 f0 ff <0f> 0b 83 c3 01 b8 ff ff 37 00 89 1d 67 a9 e9 07 48 c1 e0 2a 65 48 RSP: 0018:ffffc900092d7940 EFLAGS: 00010282 RAX: 000000000000006d RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff8161f408 RDI: fffff5200125af1a RBP: ffff888021c5b0c8 R08: 000000000000006d R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff88801c9bb0c8 R13: ffff88801b2488c8 R14: ffff888021c5b0c0 R15: ffff88807c5c4968 FS: 00007f128bb7e700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f72b382e378 CR3: 0000000046f0d000 CR4: 00000000003506e0 DR0: 00000000ffff070c DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:134 [inline] list_del include/linux/list.h:148 [inline] klist_release+0x66/0x480 lib/klist.c:189 kref_put include/linux/kref.h:65 [inline] klist_dec_and_del lib/klist.c:206 [inline] klist_put+0x151/0x1d0 lib/klist.c:217 device_del+0x46d/0xc80 drivers/base/core.c:3699 hci_conn_del_sysfs+0xdc/0x180 net/bluetooth/hci_sysfs.c:78 hci_conn_cleanup+0x315/0x7b0 net/bluetooth/hci_conn.c:147 hci_conn_del+0x29b/0x790 net/bluetooth/hci_conn.c:1022 hci_conn_hash_flush+0x197/0x260 net/bluetooth/hci_conn.c:2367 hci_dev_close_sync+0x55d/0x1130 net/bluetooth/hci_sync.c:4476 hci_dev_do_close+0x2d/0x70 net/bluetooth/hci_core.c:554 hci_rfkill_set_block+0x15d/0x1c0 net/bluetooth/hci_core.c:947 rfkill_set_block+0x1f9/0x540 net/rfkill/core.c:345 rfkill_fop_write+0x2c3/0x570 net/rfkill/core.c:1286 vfs_write+0x2d7/0xdd0 fs/read_write.c:576 ksys_write+0x1e8/0x250 fs/read_write.c:631 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f128aa89279 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f128bb7e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f128ab9bf80 RCX: 00007f128aa89279 RDX: 0000000000000008 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00007f128aae32e9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f128b0cfb1f R14: 00007f128bb7e300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid.cold+0x70/0x72 lib/list_debug.c:62 Code: f0 ff 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 e0 fb 48 8a e8 82 f6 f0 ff 0f 0b 4c 89 e9 48 89 ee 48 c7 c7 20 fd 48 8a e8 6e f6 f0 ff <0f> 0b 83 c3 01 b8 ff ff 37 00 89 1d 67 a9 e9 07 48 c1 e0 2a 65 48 RSP: 0018:ffffc900092d7940 EFLAGS: 00010282 RAX: 000000000000006d RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff8161f408 RDI: fffff5200125af1a RBP: ffff888021c5b0c8 R08: 000000000000006d R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff88801c9bb0c8 R13: ffff88801b2488c8 R14: ffff888021c5b0c0 R15: ffff88807c5c4968 FS: 00007f128bb7e700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f72b382e378 CR3: 0000000046f0d000 CR4: 00000000003506e0 DR0: 00000000ffff070c DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400