Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f] CPU: 1 UID: 0 PID: 15258 Comm: syz.0.1494 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:klist_put lib/klist.c:212 [inline] RIP: 0010:klist_del lib/klist.c:230 [inline] RIP: 0010:klist_remove+0x156/0x340 lib/klist.c:249 Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 bd ed 7d f6 4d 8b 26 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 9e ed 7d f6 49 8b 44 24 58 48 89 44 24 08 RSP: 0018:ffffc900020df620 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffff88802d02db80 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc900020df720 R08: ffffffff901aa823 R09: 1ffffffff2035504 R10: dffffc0000000000 R11: fffffbfff2035505 R12: 0000000000000000 R13: 1ffff1100b25710c R14: ffff8880592b8860 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8881250f4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc7d5e8dd8 CR3: 000000005a538000 CR4: 00000000003526f0 Call Trace: device_move+0x193/0x730 drivers/base/core.c:4618 hci_conn_del_sysfs+0xb8/0x1a0 net/bluetooth/hci_sysfs.c:75 hci_conn_cleanup net/bluetooth/hci_conn.c:173 [inline] hci_conn_del+0xc36/0x1230 net/bluetooth/hci_conn.c:1240 hci_conn_hash_flush+0x191/0x260 net/bluetooth/hci_conn.c:2645 hci_dev_close_sync+0x821/0x10e0 net/bluetooth/hci_sync.c:5358 hci_dev_do_close net/bluetooth/hci_core.c:502 [inline] hci_unregister_dev+0x21a/0x5a0 net/bluetooth/hci_core.c:2716 vhci_release+0x152/0x1a0 drivers/bluetooth/hci_vhci.c:690 __fput+0x451/0x8c0 fs/file_table.c:500 task_work_run+0x1d9/0x270 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x926/0x2490 kernel/exit.c:974 do_group_exit+0x21b/0x2d0 kernel/exit.c:1116 get_signal+0x1284/0x1330 kernel/signal.c:3036 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline] exit_to_user_mode_loop+0x86/0x480 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:238 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:269 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd28e35cfce Code: Unable to access opcode bytes at 0x7fd28e35cfa4. RSP: 002b:00007fd28f320f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6 RAX: fffffffffffffdfc RBX: 00007fd28f3216c0 RCX: 00007fd28e35cfce RDX: 00007fd28f320fb0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fd28e432c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd28e616038 R14: 00007fd28e615fa0 R15: 00007ffcb94ee418 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:klist_put lib/klist.c:212 [inline] RIP: 0010:klist_del lib/klist.c:230 [inline] RIP: 0010:klist_remove+0x156/0x340 lib/klist.c:249 Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 bd ed 7d f6 4d 8b 26 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 9e ed 7d f6 49 8b 44 24 58 48 89 44 24 08 RSP: 0018:ffffc900020df620 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffff88802d02db80 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc900020df720 R08: ffffffff901aa823 R09: 1ffffffff2035504 R10: dffffc0000000000 R11: fffffbfff2035505 R12: 0000000000000000 R13: 1ffff1100b25710c R14: ffff8880592b8860 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888124ff4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc7d5ed288 CR3: 000000001d3dc000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 4d 89 f5 mov %r14,%r13 3: 49 c1 ed 03 shr $0x3,%r13 7: 43 80 7c 3d 00 00 cmpb $0x0,0x0(%r13,%r15,1) d: 74 08 je 0x17 f: 4c 89 f7 mov %r14,%rdi 12: e8 bd ed 7d f6 call 0xf67dedd4 17: 4d 8b 26 mov (%r14),%r12 1a: 49 83 e4 fe and $0xfffffffffffffffe,%r12 1e: 49 8d 7c 24 58 lea 0x58(%r12),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 05 je 0x36 31: e8 9e ed 7d f6 call 0xf67dedd4 36: 49 8b 44 24 58 mov 0x58(%r12),%rax 3b: 48 89 44 24 08 mov %rax,0x8(%rsp)