process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3400
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
------------[ cut here ]------------
kernel BUG at mm/z3fold.c:1293!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 44 Comm: kcompactd0 Not tainted 6.14.0-rc5-syzkaller-00234-gb7c90e3e717a #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:z3fold_page_migrate+0xc37/0x12d0 mm/z3fold.c:1293
Code: 1e 93 ff 48 c7 c6 00 fe 7d 8b 48 89 ef e8 a1 a2 d9 ff 90 0f 0b e8 29 1e 93 ff 48 c7 c6 60 fe 7d 8b 48 89 ef e8 8a a2 d9 ff 90 <0f> 0b e8 12 1e 93 ff 48 8d bb a0 00 00 00 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc900006b7400 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801ef78000 RSI: ffffffff8226d226 RDI: ffff88801ef78444
RBP: ffffea0000880c80 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90628417 R11: 0000000000000003 R12: ffffea00008eed00
R13: ffffea0000880ca8 R14: 0000000000000001 R15: ffffea0000880c98
FS:  0000000000000000(0000) GS:ffff88802b400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f738df0c CR3: 00000000773f4000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 move_to_new_folio+0x449/0x700 mm/migrate.c:1071
 migrate_folio_move mm/migrate.c:1360 [inline]
 migrate_folios_move mm/migrate.c:1712 [inline]
 migrate_pages_batch+0x2009/0x3150 mm/migrate.c:1959
 migrate_pages_sync+0x4f1/0x910 mm/migrate.c:2016
 migrate_pages+0x1acf/0x2290 mm/migrate.c:2098
 compact_zone+0x1f66/0x4220 mm/compaction.c:2663
 kcompactd_do_work+0x43d/0x9b0 mm/compaction.c:3111
 kcompactd+0x870/0xd40 mm/compaction.c:3204
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:z3fold_page_migrate+0xc37/0x12d0 mm/z3fold.c:1293
Code: 1e 93 ff 48 c7 c6 00 fe 7d 8b 48 89 ef e8 a1 a2 d9 ff 90 0f 0b e8 29 1e 93 ff 48 c7 c6 60 fe 7d 8b 48 89 ef e8 8a a2 d9 ff 90 <0f> 0b e8 12 1e 93 ff 48 8d bb a0 00 00 00 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc900006b7400 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801ef78000 RSI: ffffffff8226d226 RDI: ffff88801ef78444
RBP: ffffea0000880c80 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90628417 R11: 0000000000000003 R12: ffffea00008eed00
R13: ffffea0000880ca8 R14: 0000000000000001 R15: ffffea0000880c98
FS:  0000000000000000(0000) GS:ffff88802b600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f7442000 CR3: 000000006dba8000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400