kswapd_shrink_node mm/vmscan.c:6807 [inline]
 balance_pgdat+0xbab/0x19c0 mm/vmscan.c:6999
 kswapd+0x590/0xb70 mm/vmscan.c:7264
 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: 3 UID: 0 PID: 43 Comm: kcompactd0 Not tainted 6.14.0-rc4-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:z3fold_page_migrate+0xc37/0x12d0 mm/z3fold.c:1293
Code: 48 92 ff 48 c7 c6 00 f6 7d 8b 48 89 ef e8 a1 a3 d9 ff 90 0f 0b e8 59 48 92 ff 48 c7 c6 60 f6 7d 8b 48 89 ef e8 8a a3 d9 ff 90 <0f> 0b e8 42 48 92 ff 48 8d bb a0 00 00 00 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc900007b7420 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801eaec880 RSI: ffffffff822797a6 RDI: ffff88801eaeccc4
RBP: ffffea0000f19b80 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90625617 R11: 0000000000000002 R12: ffffea00012acb40
R13: ffffea0000f19ba8 R14: 0000000000000001 R15: ffffea0000f19b98
FS:  0000000000000000(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c003407000 CR3: 00000000236ac000 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
 compact_node+0x1a2/0x2d0 mm/compaction.c:2932
 kcompactd+0x707/0xd40 mm/compaction.c:3226
 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: 48 92 ff 48 c7 c6 00 f6 7d 8b 48 89 ef e8 a1 a3 d9 ff 90 0f 0b e8 59 48 92 ff 48 c7 c6 60 f6 7d 8b 48 89 ef e8 8a a3 d9 ff 90 <0f> 0b e8 42 48 92 ff 48 8d bb a0 00 00 00 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc900007b7420 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801eaec880 RSI: ffffffff822797a6 RDI: ffff88801eaeccc4
RBP: ffffea0000f19b80 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90625617 R11: 0000000000000002 R12: ffffea00012acb40
R13: ffffea0000f19ba8 R14: 0000000000000001 R15: ffffea0000f19b98
FS:  0000000000000000(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c003407000 CR3: 00000000236ac000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400