lkml.org 
[lkml]   [2021]   [Mar]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
Subject[syzbot] WARNING in do_user_addr_fault
From
Hello,

syzbot found the following issue on:

HEAD commit: 05a59d79 Merge git://git.kernel.org:/pub/scm/linux/kernel/..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=107f822ad00000
kernel config: https://syzkaller.appspot.com/x/.config?x=750735fdbc630971
dashboard link: https://syzkaller.appspot.com/bug?extid=beb50656d2e0b1940264

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+beb50656d2e0b1940264@syzkaller.appspotmail.com

------------[ cut here ]------------
raw_local_irq_restore() called with IRQs enabled
WARNING: CPU: 0 PID: 8407 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x1d/0x20 kernel/locking/irqflag-debug.c:10
Modules linked in:
CPU: 0 PID: 8407 Comm: syz-fuzzer Not tainted 5.12.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:warn_bogus_irq_restore+0x1d/0x20 kernel/locking/irqflag-debug.c:10
Code: be ff cc cc cc cc cc cc cc cc cc cc cc 80 3d 11 d1 ad 04 00 74 01 c3 48 c7 c7 20 79 6b 89 c6 05 00 d1 ad 04 01 e8 75 5b be ff <0f> 0b c3 48 39 77 10 0f 84 97 00 00 00 66 f7 47 22 f0 ff 74 4b 48
RSP: 0000:ffffc900010b7ab0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888032907120 RCX: 0000000000000000
RDX: ffff888013bde340 RSI: ffffffff815b4435 RDI: fffff52000216f48
RBP: 0000000000000200 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815ad19e R11: 0000000000000000 R12: 0000000000000003
R13: ffffed1006520e24 R14: 0000000000000001 R15: ffff8880b9c36000
CR2: 000000c0002de000 CR3: 000000001a614000 CR4: 00000000001506f0
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pv_wait arch/x86/include/asm/paravirt.h:564 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
__pv_queued_spin_lock_slowpath+0x8b8/0xb40 kernel/locking/qspinlock.c:508
do_user_addr_fault+0x483/0x1210 arch/x86/mm/fault.c:1390
RIP: 0033:0x46cf33
Code: 00 48 81 eb 00 01 00 00 48 81 c7 00 01 00 00 48 81 fb 00 01 00 00 73 82 e9 07 ff ff ff c5 fd ef c0 48 81 fb 00 00 00 02 73 46 <c5> fe 7f 07 c5 fe 7f 47 20 c5 fe 7f 47 40 c5 fe 7f 47 60 48 81 eb
RSP: 002b:000000c0000c35f0 EFLAGS: 00010287
RAX: 0000000000000000 RBX: 00000000000001a0 RCX: 00000000000001a0
RDX: 00000000000001a0 RSI: 0000000000000000 RDI: 000000c0002de000
R10: 00007ff0c6f30b00 R11: 0000000000000000 R12: 0000000000000040


---
This report 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@googlegroups.com.

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

\
 
 \ /
  Last update: 2021-03-10 18:47    [W:0.028 / U:0.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site