BUG: object ADDR is on stack ADDR, but NOT annotated. (2)

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: b9dc7bb8 mm: memcontrol: fix NULL pointer crash in test_cl..
git tree: android-4.9
console output: https://syzkaller.appspot.com/x/log.txt?x=17f19fc9a00000
kernel config: https://syzkaller.appspot.com/x/.config?x=c696517ae790ca95
dashboard link: https://syzkaller.appspot.com/bug?extid=a11a4425ec66a907e541
compiler: gcc (GCC) 9.0.0 20181231 (experimental)

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

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+a11a44...@syzkaller.appspotmail.com

EBUG: object 00000000c110695a is on stack 00000000d09025a6, but NOT
annotated.
03:41:09 executing program 5:
request_key(&(0x7f0000000040)='user\x00', &(0x7f0000000080)={'syz', 0x1},
&(0x7f00000000c0)='keyring\x00', 0xfffffffffffffffa)
r0 = add_key$keyring(&(0x7f0000000100)='keyring\x00',
&(0x7f0000000140)={'syz'}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$search(0xa, r0, &(0x7f0000000000)='keyring\x00',
&(0x7f0000000200)={'syz'}, r0)
keyctl$revoke(0x3, r0)



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[syzbot]

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