[syzbot] [acpi?] general protection fault in software_node_register

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 7235a3e71949 Merge branch 'for-next/core' into for-kernelci
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=122e13b9580000
kernel config: https://syzkaller.appspot.com/x/.config?x=ccf4bea59f67007
dashboard link: https://syzkaller.appspot.com/bug?extid=665bae0a102933788e1a
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
userspace arch: arm64
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=142f9bb9580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16abbe32580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/fd45635beaae/disk-7235a3e7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d7d2e6507223/vmlinux-7235a3e7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/b5b5d8de4cea/Image-7235a3e7.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+665bae...@syzkaller.appspotmail.com

EXT4-fs (nvme0n1p2): shut down requested (2)
Aborting journal on device nvme0n1p2-8.
Unable to handle kernel paging request at virtual address dfff800000
Unable to handle kernel paging request at virtual address dfff800000000001
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
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
[dfff800000000001] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1] SMP
Modules linked in:
CPU: 1 UID: 0 PID: 4917 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : software_node_register+0x30/0xd4 drivers/base/swnode.c:927
lr : software_node_register+0x28/0xd4 drivers/base/swnode.c:926
sp : ffff800095917500
x29: ffff800095917500 x28: 0000000000000000 x27: ffff0000c2b100d0
x26: dfff800000000000 x25: ffff700012b22eb4 x24: 0000000000001ae0
x23: 0000000000000001 x22: dfff800000000000 x21: 0000000000000008
x20: 0000000000000000 x19: 0000000000000000 x18: 00000000ffffffff
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000003 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000010000003fff x6 : 0000010000000000
x5 : ffff0000c6f62980 x4 : 0000000000000400 x3 : ffff8000831b8d98
x2 : 0000000000001ae0 x1 : ffff0000d09aba80 x0 : 0000000000000000
Call trace:
software_node_register+0x30/0xd4 drivers/base/swnode.c:927 (P)
device_add_software_node+0x16c/0x1cc drivers/base/swnode.c:1015
dwc3_pci_quirks drivers/usb/dwc3/dwc3-pci.c:311 [inline]
dwc3_pci_probe+0x460/0x8e4 drivers/usb/dwc3/dwc3-pci.c:375
local_pci_probe+0xc8/0x158 drivers/pci/pci-driver.c:332
pci_call_probe drivers/pci/pci-driver.c:394 [inline]
__pci_device_probe drivers/pci/pci-driver.c:455 [inline]
pci_device_probe+0x460/0x8d4 drivers/pci/pci-driver.c:489
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x29c/0x800 drivers/base/dd.c:706
__driver_probe_device+0x1e0/0x350 drivers/base/dd.c:868
device_driver_attach+0x58/0xac drivers/base/dd.c:1203
bind_store+0xf4/0x14c drivers/base/bus.c:267
drv_attr_store+0x80/0xa4 drivers/base/bus.c:125
sysfs_kf_write+0xe0/0x108 fs/sysfs/file.c:145
kernfs_fop_write_iter+0x260/0x3b8 fs/kernfs/file.c:345
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x51c/0xa0c fs/read_write.c:687
ksys_write+0x12c/0x228 fs/read_write.c:739
__do_sys_write fs/read_write.c:750 [inline]
__se_sys_write fs/read_write.c:747 [inline]
__arm64_sys_write+0x84/0x98 fs/read_write.c:747
__invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
Code: f2fbfff6 9784f9dc 91002275 d343feb7 (38766ae8)
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
0: f2fbfff6 movk x22, #0xdfff, lsl #48
4: 9784f9dc bl 0xfffffffffe13e774
8: 91002275 add x21, x19, #0x8
c: d343feb7 lsr x23, x21, #3
* 10: 38766ae8 ldrb w8, [x23, x22] <-- trapping instruction


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