WARNING: can't dereference registers at ADDR for ip ret_from_intr

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: a1b977b4 Linux 4.19.150
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=156abcf7900000
kernel config: https://syzkaller.appspot.com/x/.config?x=c14008c8da1ca4d4
dashboard link: https://syzkaller.appspot.com/bug?extid=51fe120a40c4ae0cabb0
compiler: gcc (GCC) 10.1.0-syz 20200507

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

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+51fe12...@syzkaller.appspotmail.com

WARNING: can't dereference registers at 000000001eafb992 for ip ret_from_intr+0xb/0x1e
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
ptrace attach of "/root/syz-executor.0"[9809] was attempted by "/root/syz-executor.0"[9811]
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
XFS (loop2): Invalid superblock magic number
IPVS: ftp: loaded support on port[0] = 21
XFS (loop2): Invalid superblock magic number
syz-executor.1 (9903) used greatest stack depth: 23536 bytes left
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
XFS (loop2): Invalid superblock magic number
syz-executor.0 (9971) used greatest stack depth: 23440 bytes left
XFS (loop2): Invalid superblock magic number


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.