Unable to handle kernel paging request at virtual address dfff80000000000b
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
Mem abort info:
ESR = 0x0000000096000005
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x05: level 1 translation fault
Data abort info:
ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
CM = 0, WnR = 0, TnD = 0, TagAccess = 0
GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[dfff80000000000b] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1] SMP
Modules linked in:
CPU: 1 UID: 0 PID: 6651 Comm: kbnepd bnep0 Not tainted syzkaller #0 PREEMPT
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : klist_put lib/klist.c:212 [inline]
pc : klist_del+0x4c/0x110 lib/klist.c:230
lr : klist_del+0x28/0x110 lib/klist.c:229
sp : ffff80009e8677a0
x29: ffff80009e8677a0 x28: dfff800000000000 x27: ffff0000d675a028
x26: 1ffff00013d0cf04 x25: ffff80009e867820 x24: 1fffe0001aceb4e2
x23: 1fffe0001b8ffa0c x22: ffff0000d675a710 x21: dfff800000000000
x20: 0000000000000000 x19: ffff0000dc7fd060 x18: 00000000ffffffff
x17: ffff800089459600 x16: ffff80008052b424 x15: 0000000000000001
x14: 1fffe0001e904b86 x13: 0000000000000000 x12: 0000000000000000
x11: ffff60001e904b87 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 000000000000000b x7 : ffff800080c707e8 x6 : ffff800080c6cbc4
x5 : ffff0000cca7ad58 x4 : ffff8000893787c8 x3 : ffff800080fc3294
x2 : 0000000000000001 x1 : 0000000000000004 x0 : 0000000000000058
Call trace:
klist_put lib/klist.c:212 [inline] (P)
klist_del+0x4c/0x110 lib/klist.c:230 (P)
device_del+0x234/0x808 drivers/base/core.c:3855
netdev_unregister_kobject+0x2bc/0x3bc net/core/net-sysfs.c:2327
unregister_netdevice_many_notify+0x1770/0x1de0 net/core/dev.c:12201
unregister_netdevice_many net/core/dev.c:12229 [inline]
unregister_netdevice_queue net/core/dev.c:12073 [inline]
unregister_netdevice include/linux/netdevice.h:3385 [inline]
unregister_netdev+0x15c/0x1f8 net/core/dev.c:12247
bnep_session+0x208c/0x223c net/bluetooth/bnep/core.c:525
kthread+0x5fc/0x75c kernel/kthread.c:463
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
Code: f9400268 927ff914 91016280 d343fc08 (38756908)
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
0: f9400268 ldr x8, [x19]
4: 927ff914 and x20, x8, #0xfffffffffffffffe
8: 91016280 add x0, x20, #0x58
c: d343fc08 lsr x8, x0, #3
* 10: 38756908 ldrb w8, [x8, x21] <-- trapping instruction