linux-kernel - Re: WARNING: can't access registers at asm_sysvec_reschedule

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Message-ID: <000000000000620d5805b1940d15@google.com>
Date:   Tue, 13 Oct 2020 14:25:21 -0700
From:   syzbot <syzbot+853f7009c5c271473926@...kaller.appspotmail.com>
To:     alexandre.chartre@...cle.com, bp@...en8.de, hpa@...or.com,
        linux-kernel@...r.kernel.org, luto@...nel.org, mingo@...hat.com,
        netdev@...r.kernel.org, peterz@...radead.org,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de, x86@...nel.org
Subject: Re: WARNING: can't access registers at asm_sysvec_reschedule_ipi

syzbot has found a reproducer for the following issue on:

HEAD commit:    64a632da net: fec: Fix phy_device lookup for phy_reset_aft..
git tree:       net
console output: https://syzkaller.appspot.com/x/log.txt?x=11580c80500000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c06bcf3cc963d91c
dashboard link: https://syzkaller.appspot.com/bug?extid=853f7009c5c271473926
compiler:       gcc (GCC) 10.1.0-syz 20200507
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12c1bc6f900000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+853f7009c5c271473926@...kaller.appspotmail.com

WARNING: can't access registers at asm_sysvec_reschedule_ipi+0x12/0x20 arch/x86/include/asm/idtentry.h:586