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Date:   Mon, 25 May 2020 20:14:14 -0700
From:   syzbot <syzbot+eb1b67ef4194d8f9ebff@...kaller.appspotmail.com>
To:     christian@...uner.io, ebiederm@...ssion.com,
        linux-kernel@...r.kernel.org, oleg@...hat.com,
        syzkaller-bugs@...glegroups.com
Subject: INFO: trying to register non-static key in calculate_sigpending

Hello,

syzbot found the following crash on:

HEAD commit:    d2f8825a Merge tag 'for_linus' of git://git.kernel.org/pub..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=12470c26100000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b3368ce0cc5f5ace
dashboard link: https://syzkaller.appspot.com/bug?extid=eb1b67ef4194d8f9ebff
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+eb1b67ef4194d8f9ebff@...kaller.appspotmail.com

INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 1080 Comm: syz-executor.4 Not tainted 5.7.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 assign_lock_key kernel/locking/lockdep.c:913 [inline]
 register_lock_class+0x1664/0x1760 kernel/locking/lockdep.c:1225
 __lock_acquire+0x104/0x4c50 kernel/locking/lockdep.c:4234
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4934
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
 _raw_spin_lock_irq+0x5b/0x80 kernel/locking/spinlock.c:167
 spin_lock_irq include/linux/spinlock.h:378 [inline]
 calculate_sigpending+0x42/0xa0 kernel/signal.c:196
 ret_from_fork+0x8/0x30 arch/x86/entry/entry_64.S:335


---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.

syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

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