Message-ID: <6740795d.050a0220.363a1b.013a.GAE@google.com>
Date: Fri, 22 Nov 2024 04:30:21 -0800
From: syzbot <syzbot+092ef2e75c24d23f33c4@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, kent.overstreet@...ux.dev, 
	linux-bcachefs@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-mm@...ck.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [bcachefs?] [mm?] BUG: corrupted list in list_lru_add

Hello,

syzbot found the following issue on:

HEAD commit:    adc218676eef Linux 6.12
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14f6bb5f980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e31661728c1a4027
dashboard link: https://syzkaller.appspot.com/bug?extid=092ef2e75c24d23f33c4
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=132fb2e8580000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-adc21867.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/9304ecc29d43/vmlinux-adc21867.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a42cc9054b58/bzImage-adc21867.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/1a34900bae57/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+092ef2e75c24d23f33c4@...kaller.appspotmail.com

list_add corruption. prev->next should be next (ffff88801f2a12c0), but was 0000000000000000. (prev=ffff88804264f098).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:34!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 79 Comm: kswapd1 Not tainted 6.12.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__list_add_valid_or_report+0xeb/0xf0 lib/list_debug.c:32
Code: 0f 0b 48 c7 c7 60 0e 61 8c 4c 89 e6 4c 89 f1 e8 8b b9 00 07 90 0f 0b 48 c7 c7 e0 0e 61 8c 4c 89 f6 4c 89 e1 e8 76 b9 00 07 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3
RSP: 0000:ffffc90000e467d8 EFLAGS: 00010046
RAX: 0000000000000075 RBX: ffff88801f2a12c8 RCX: b5af2eed7d4c4700
RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000
RBP: ffff88801f2a12c0 R08: ffffffff8174b13c R09: 1ffffffff1d02680
R10: dffffc0000000000 R11: fffffbfff1d02681 R12: ffff88804264f098
R13: dffffc0000000000 R14: ffff88801f2a12c0 R15: ffff8880426e0dd8
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f91a5b18000 CR3: 0000000011d94000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_add_valid include/linux/list.h:88 [inline]
 __list_add include/linux/list.h:150 [inline]
 list_add_tail include/linux/list.h:183 [inline]
 list_lru_add+0x1d2/0x390 mm/list_lru.c:98
 list_lru_add_obj+0x17b/0x250 mm/list_lru.c:118
 workingset_update_node+0x1af/0x230 mm/workingset.c:644
 xas_update lib/xarray.c:355 [inline]
 update_node lib/xarray.c:758 [inline]
 xas_store+0xb8f/0x1890 lib/xarray.c:845
 __delete_from_swap_cache+0x514/0xe20 mm/swap_state.c:159
 __remove_mapping+0x889/0x1390 mm/vmscan.c:764
 shrink_folio_list+0x2c50/0x8cc0 mm/vmscan.c:1467
 evict_folios+0x549b/0x7b50 mm/vmscan.c:4589
 try_to_shrink_lruvec+0x9ab/0xbb0 mm/vmscan.c:4784
 shrink_one+0x3b9/0x850 mm/vmscan.c:4822
 shrink_many mm/vmscan.c:4885 [inline]
 lru_gen_shrink_node mm/vmscan.c:4963 [inline]
 shrink_node+0x3791/0x3e20 mm/vmscan.c:5943
 kswapd_shrink_node mm/vmscan.c:6771 [inline]
 balance_pgdat mm/vmscan.c:6963 [inline]
 kswapd+0x1ca9/0x3700 mm/vmscan.c:7232
 kthread+0x2f0/0x390 kernel/kthread.c:389
 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>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0xeb/0xf0 lib/list_debug.c:32
Code: 0f 0b 48 c7 c7 60 0e 61 8c 4c 89 e6 4c 89 f1 e8 8b b9 00 07 90 0f 0b 48 c7 c7 e0 0e 61 8c 4c 89 f6 4c 89 e1 e8 76 b9 00 07 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3
RSP: 0000:ffffc90000e467d8 EFLAGS: 00010046
RAX: 0000000000000075 RBX: ffff88801f2a12c8 RCX: b5af2eed7d4c4700
RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000
RBP: ffff88801f2a12c0 R08: ffffffff8174b13c R09: 1ffffffff1d02680
R10: dffffc0000000000 R11: fffffbfff1d02681 R12: ffff88804264f098
R13: dffffc0000000000 R14: ffff88801f2a12c0 R15: ffff8880426e0dd8
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f91a5b18000 CR3: 0000000011d94000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
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