linux-kernel - Re: [syzbot] [arm] BUG: bad usercopy in fpa

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Date: Fri, 05 Apr 2024 04:44:03 -0700
From: syzbot <syzbot+cb76c2983557a07cdb14@...kaller.appspotmail.com>
To: keescook@...omium.org, linux-kernel@...r.kernel.org, 
	penguin-kernel@...ove.sakura.ne.jp, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [arm] BUG: bad usercopy in fpa_set

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

/include/linux/stddef.h:16:33: error: invalid use of undefined type 'struct task_struct'
/arch/arm/include/asm/processor.h:44:24: error: invalid application of 'sizeof' to incomplete type 'struct thread_info'

Tested on:

commit:         8cb4a9a8 x86/cpufeatures: Add CPUID_LNX_5 to track rec..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=f0bf9b3a0ca93c59
dashboard link: https://syzkaller.appspot.com/bug?extid=cb76c2983557a07cdb14
compiler:       arm-linux-gnueabi-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm
patch:          https://syzkaller.appspot.com/x/patch.diff?x=157e1bb5180000