linux-kernel - [syzbot] usb-testing boot error: BUG: corrupted list in pick_next_task

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Message-ID: <000000000000ec8f5c05e6d0175f@google.com>
Date:   Mon, 22 Aug 2022 01:18:32 -0700
From:   syzbot <syzbot+b637b6748f2b5dc92271@...kaller.appspotmail.com>
To:     Henry.Wang@....com, bigeasy@...utronix.de,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        longpeng2@...wei.com, syzkaller-bugs@...glegroups.com,
        tglx@...utronix.de, vschneid@...hat.com
Subject: [syzbot] usb-testing boot error: BUG: corrupted list in pick_next_task_fair

Hello,

syzbot found the following issue on:

HEAD commit:    568035b01cfb Linux 6.0-rc1
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
console output: https://syzkaller.appspot.com/x/log.txt?x=13cc503d080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=3cb39b084894e9a5
dashboard link: https://syzkaller.appspot.com/bug?extid=b637b6748f2b5dc92271
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+b637b6748f2b5dc92271@...kaller.appspotmail.com

list_del corruption. next->prev should be ffff88810b71d628, but was ffff000000000000. (next=ffff88810e7380a8)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:62!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 6.0.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:__list_del_entry_valid.cold+0x70/0x72 lib/list_debug.c:62
Code: fc ff 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 40 b4 62 86 e8 c7 1e fc ff 0f 0b 4c 89 e9 48 89 ee 48 c7 c7 80 b5 62 86 e8 b3 1e fc ff <0f> 0b 83 c3 01 b8 ff ff 37 00 89 1d 22 2a ce 05 48 c1 e0 2a 65 48
RSP: 0000:ffffc9000014fd58 EFLAGS: 00010082
RAX: 000000000000006d RBX: ffff8881f6937b00 RCX: 0000000000000000
RDX: ffff888100365580 RSI: ffffffff812c97e8 RDI: fffff52000029f9d
RBP: ffff88810b71d628 R08: 000000000000006d R09: 0000000000000000
R10: 0000000080000002 R11: 000000000000004e R12: ffff8881f69385e8
R13: ffff88810e7380a8 R14: ffff8881f69385e8 R15: ffffc9000014fe30
FS:  0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000007825000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry include/linux/list.h:134 [inline]
 list_move include/linux/list.h:217 [inline]
 pick_next_task_fair+0x170/0xf80 kernel/sched/fair.c:7468
 __pick_next_task kernel/sched/core.c:5804 [inline]
 pick_next_task kernel/sched/core.c:6313 [inline]
 __schedule+0x3a3/0x26f0 kernel/sched/core.c:6458
 schedule+0xda/0x1b0 kernel/sched/core.c:6570
 smpboot_thread_fn+0x2eb/0x9c0 kernel/smpboot.c:160
 kthread+0x2ea/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid.cold+0x70/0x72 lib/list_debug.c:62
Code: fc ff 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 40 b4 62 86 e8 c7 1e fc ff 0f 0b 4c 89 e9 48 89 ee 48 c7 c7 80 b5 62 86 e8 b3 1e fc ff <0f> 0b 83 c3 01 b8 ff ff 37 00 89 1d 22 2a ce 05 48 c1 e0 2a 65 48
RSP: 0000:ffffc9000014fd58 EFLAGS: 00010082
RAX: 000000000000006d RBX: ffff8881f6937b00 RCX: 0000000000000000
RDX: ffff888100365580 RSI: ffffffff812c97e8 RDI: fffff52000029f9d
RBP: ffff88810b71d628 R08: 000000000000006d R09: 0000000000000000
R10: 0000000080000002 R11: 000000000000004e R12: ffff8881f69385e8
R13: ffff88810e7380a8 R14: ffff8881f69385e8 R15: ffffc9000014fe30
FS:  0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000007825000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
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