Message-ID: <00000000000023e628060791db6b@google.com>
Date:   Thu, 12 Oct 2023 21:54:48 -0700
From:   syzbot <syzbot+f4c63b85f107b94a33be@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [mm?] WARNING in del_page_from_free_list

Hello,

syzbot found the following issue on:

HEAD commit:    98897dc735cf Add linux-next specific files for 20230914
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=14bda274680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1502c503717ada5c
dashboard link: https://syzkaller.appspot.com/bug?extid=f4c63b85f107b94a33be
compiler:       gcc (Debian 12.2.0-14) 12.2.0, 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/00e4c0af5a8a/disk-98897dc7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7b54a00eee56/vmlinux-98897dc7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/100094353b8e/bzImage-98897dc7.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f4c63b85f107b94a33be@...kaller.appspotmail.com

------------[ cut here ]------------
page type is 1, passed migratetype is 0 (nr=512)
WARNING: CPU: 1 PID: 21258 at mm/page_alloc.c:699 del_page_from_free_list+0x36e/0x490 mm/page_alloc.c:699
Modules linked in:
CPU: 1 PID: 21258 Comm: syz-executor.4 Not tainted 6.6.0-rc1-next-20230914-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:del_page_from_free_list+0x36e/0x490 mm/page_alloc.c:699
Code: 89 ef be 07 00 00 00 e8 e0 f6 ff ff 44 89 e1 44 89 f2 48 c7 c7 a0 b6 99 8a 48 89 c6 b8 01 00 00 00 d3 e0 89 c1 e8 22 2f 7c ff <0f> 0b e9 d2 fc ff ff 48 c7 c6 00 b8 99 8a 48 89 df e8 9c 46 f4 ff
RSP: 0018:ffffc90015f974b8 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffffea0001c50000 RCX: 0000000000000000
RDX: ffff8880b52f9dc0 RSI: ffffffff814e0396 RDI: 0000000000000001
RBP: 0000000000071400 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000005f3e0 R12: 0000000000000009
R13: ffff88813fffa700 R14: 0000000000000000 R15: ffffea0001c50000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31328000 CR3: 000000000c976000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 __free_one_page+0x3eb/0xa50 mm/page_alloc.c:830
 free_pcppages_bulk+0x2f3/0x610 mm/page_alloc.c:1233
 free_unref_page_list+0x859/0x1050 mm/page_alloc.c:2568
 release_pages+0x32a/0x14e0 mm/swap.c:1042
 __folio_batch_release+0x77/0xe0 mm/swap.c:1062
 folio_batch_release include/linux/pagevec.h:83 [inline]
 shmem_undo_range+0x580/0x1140 mm/shmem.c:1022
 shmem_truncate_range mm/shmem.c:1131 [inline]
 shmem_evict_inode+0x392/0xb50 mm/shmem.c:1260
 evict+0x2ed/0x6b0 fs/inode.c:666
 iput_final fs/inode.c:1777 [inline]
 iput.part.0+0x55e/0x7a0 fs/inode.c:1803
 iput+0x5c/0x80 fs/inode.c:1793
 dentry_unlink_inode+0x292/0x430 fs/dcache.c:401
 __dentry_kill+0x3b8/0x640 fs/dcache.c:607
 dentry_kill fs/dcache.c:733 [inline]
 dput+0x8b7/0xf80 fs/dcache.c:913
 __fput+0x536/0xa70 fs/file_table.c:392
 task_work_run+0x14d/0x240 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa92/0x2ae0 kernel/exit.c:871
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1021
 __do_sys_exit_group kernel/exit.c:1032 [inline]
 __se_sys_exit_group kernel/exit.c:1030 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1030
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb789e7cae9
Code: Unable to access opcode bytes at 0x7fb789e7cabf.
RSP: 002b:00007ffc4f7dc4a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007fb789e7cae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000001270 R09: 0000000000000000
R10: 0000001b31720000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
 </TASK>


---
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If the bug is already fixed, let syzbot know by replying with:
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