linux-kernel - [syzbot] [kernel?] WARNING in update_curr_dl

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Message-ID: <00000000000060d4fa06203404a1@google.com>
Date: Wed, 21 Aug 2024 09:27:24 -0700
From: syzbot <syzbot+cdf91ee2261629ee3c6b@...kaller.appspotmail.com>
To: bp@...en8.de, dave.hansen@...ux.intel.com, hpa@...or.com, 
	linux-kernel@...r.kernel.org, mingo@...hat.com, 
	syzkaller-bugs@...glegroups.com, tglx@...utronix.de, x86@...nel.org
Subject: [syzbot] [kernel?] WARNING in update_curr_dl_se

Hello,

syzbot found the following issue on:

HEAD commit:    367b5c3d53e5 Add linux-next specific files for 20240816
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=11e213c5980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=61ba6f3b22ee5467
dashboard link: https://syzkaller.appspot.com/bug?extid=cdf91ee2261629ee3c6b
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/0b1b4e3cad3c/disk-367b5c3d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5bb090f7813c/vmlinux-367b5c3d.xz
kernel image: https://storage.googleapis.com/syzbot-assets/6674cb0709b1/bzImage-367b5c3d.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+cdf91ee2261629ee3c6b@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 1 PID: 5401 at kernel/sched/sched.h:1476 lockdep_assert_rq_held kernel/sched/sched.h:1476 [inline]
WARNING: CPU: 1 PID: 5401 at kernel/sched/sched.h:1476 rq_clock kernel/sched/sched.h:1624 [inline]
WARNING: CPU: 1 PID: 5401 at kernel/sched/sched.h:1476 replenish_dl_new_period kernel/sched/deadline.c:777 [inline]
WARNING: CPU: 1 PID: 5401 at kernel/sched/sched.h:1476 update_curr_dl_se+0x66f/0x920 kernel/sched/deadline.c:1511
Modules linked in:
CPU: 1 UID: 0 PID: 5401 Comm: kworker/u8:10 Not tainted 6.11.0-rc3-next-20240816-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1476 [inline]
RIP: 0010:rq_clock kernel/sched/sched.h:1624 [inline]
RIP: 0010:replenish_dl_new_period kernel/sched/deadline.c:777 [inline]
RIP: 0010:update_curr_dl_se+0x66f/0x920 kernel/sched/deadline.c:1511
Code: b5 50 fe ff ff 4c 89 ff ba 20 00 00 00 e8 e9 4f 00 00 e9 58 fe ff ff 4c 89 ef be 20 00 00 00 e8 b7 13 00 00 e9 46 fe ff ff 90 <0f> 0b 90 e9 be fb ff ff 89 f1 80 e1 07 38 c1 0f 8c b5 f9 ff ff 48
RSP: 0018:ffffc900047bf6c8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880b903ea40 RCX: 0000000000000003
RDX: dffffc0000000000 RSI: ffffffff8c0adfc0 RDI: ffffffff8c60a8c0
RBP: 0000000000000031 R08: ffff8880b902c883 R09: 1ffff11017205910
R10: dffffc0000000000 R11: ffffed1017205911 R12: ffff8880b903f468
R13: ffff8880b903f428 R14: 1ffff11017207e8f R15: ffff8880b903f858
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000203f6030 CR3: 000000001f046000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 update_curr+0x575/0xb20 kernel/sched/fair.c:1176
 put_prev_entity+0x3d/0x210 kernel/sched/fair.c:5505
 put_prev_task_fair+0x4d/0x80 kernel/sched/fair.c:8686
 put_prev_task kernel/sched/sched.h:2423 [inline]
 put_prev_task_balance+0x11d/0x190 kernel/sched/core.c:5886
 __pick_next_task+0xc6/0x2f0 kernel/sched/core.c:5946
 pick_next_task kernel/sched/core.c:6012 [inline]
 __schedule+0x725/0x4ad0 kernel/sched/core.c:6594
 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6818
 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6842
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0x130/0x140 kernel/locking/spinlock.c:194
 task_rq_unlock kernel/sched/sched.h:1759 [inline]
 __sched_setscheduler+0xf35/0x1ba0 kernel/sched/syscalls.c:858
 _sched_setscheduler kernel/sched/syscalls.c:880 [inline]
 sched_setscheduler_nocheck+0x190/0x2e0 kernel/sched/syscalls.c:927
 kthread+0x1aa/0x390 kernel/kthread.c:370
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>


---
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