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Date: Tue, 19 Dec 2023 15:58:24 -0800
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Subject: [syzbot] [arm?] WARNING in do_sve_acc
From: syzbot <syzbot+95ffb6a83b20ea7f4f55@syzkaller.appspotmail.com>
To: catalin.marinas@arm.com, linux-arm-kernel@lists.infradead.org, 
	linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, 
	will@kernel.org
Content-Type: text/plain; charset="UTF-8"

Hello,

syzbot found the following issue on:

HEAD commit:    3f7168591ebf Merge tag '6.7-rc5-smb3-client-fixes' of git:..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=108baf71e80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8cf3c4f966189832
dashboard link: https://syzkaller.appspot.com/bug?extid=95ffb6a83b20ea7f4f55
compiler:       aarch64-linux-gnu-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/384ffdcca292/non_bootable_disk-3f716859.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/fc2a62c05f31/vmlinux-3f716859.xz
kernel image: https://storage.googleapis.com/syzbot-assets/4dac83fca8af/Image-3f716859.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+95ffb6a83b20ea7f4f55@syzkaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 0 PID: 16446 at arch/arm64/kernel/fpsimd.c:1394 do_sve_acc+0x6c/0x10c arch/arm64/kernel/fpsimd.c:1393
Modules linked in:
CPU: 0 PID: 16446 Comm: syz-executor.0 Not tainted 6.7.0-rc5-syzkaller-00134-g3f7168591ebf #0
Hardware name: linux,dummy-virt (DT)
pstate: 01400009 (nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
pc : do_sve_acc+0x6c/0x10c arch/arm64/kernel/fpsimd.c:1394
lr : do_sve_acc+0x5c/0x10c arch/arm64/kernel/fpsimd.c:1391
sp : ffff800082d1be60
x29: ffff800082d1be60 x28: fbff00000648af40 x27: 0000000000000000
x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000
x23: 0000000080001000 x22: 0000ffffa04568d4 x21: 00000000ffffffff
x20: fbff00000648bec8 x19: fbff00000648af40 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000
x8 : faff000029208888 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000000 x3 : 0000000000000001
x2 : 0000000000000000 x1 : ffff7ffffd52e000 x0 : 0000000000800000
Call trace:
 do_sve_acc+0x6c/0x10c arch/arm64/kernel/fpsimd.c:1393
 el0_sve_acc+0x2c/0x98 arch/arm64/kernel/entry-common.c:580
 el0t_64_sync_handler+0xf4/0x12c arch/arm64/kernel/entry-common.c:708
 el0t_64_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:595
---[ end trace 0000000000000000 ]---


---
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