___sys_sendmsg+0x135/0x1e0 net/socket.c:2627
 __sys_sendmmsg+0x2fa/0x420 net/socket.c:2709
 __compat_sys_sendmmsg net/compat.c:360 [inline]
 __do_compat_sys_sendmmsg net/compat.c:367 [inline]
 __se_compat_sys_sendmmsg net/compat.c:364 [inline]
 __ia32_compat_sys_sendmmsg+0x9d/0x100 net/compat.c:364
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:387
------------[ cut here ]------------
kernel BUG at mm/z3fold.c:1293!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 45 Comm: kcompactd1 Not tainted 6.14.0-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:z3fold_page_migrate+0xc6b/0x1390 mm/z3fold.c:1293
Code: 20 93 ff 48 c7 c6 00 fd 7d 8b 48 89 ef e8 6d a1 d9 ff 90 0f 0b e8 a5 20 93 ff 48 c7 c6 60 fd 7d 8b 48 89 ef e8 56 a1 d9 ff 90 <0f> 0b e8 8e 20 93 ff 48 8d bb a0 00 00 00 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc900006c7420 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880404c4880 RSI: ffffffff8226cf3a RDI: ffff8880404c4cc4
RBP: ffffea0001523680 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90628e17 R11: 1ffff1100a910512 R12: ffffea00018d3c40
R13: ffffea00015236a8 R14: 0000000000000001 R15: ffffea0001523698
FS:  0000000000000000(0000) GS:ffff88802b400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055af34cbe0c8 CR3: 000000002919a000 CR4: 0000000000352ef0
DR0: 0000000000000007 DR1: 000000000000000b DR2: 0000000000000002
DR3: 0000000000000009 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 move_to_new_folio+0x449/0x700 mm/migrate.c:1069
 migrate_folio_move mm/migrate.c:1358 [inline]
 migrate_folios_move mm/migrate.c:1710 [inline]
 migrate_pages_batch+0x2009/0x3150 mm/migrate.c:1957
 migrate_pages_sync+0x4f1/0x910 mm/migrate.c:2014
 migrate_pages+0x1acf/0x2290 mm/migrate.c:2096
 compact_zone+0x1f66/0x4220 mm/compaction.c:2663
 compact_node+0x1a2/0x2d0 mm/compaction.c:2932
 kcompactd+0x744/0xdd0 mm/compaction.c:3227
 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+0xc6b/0x1390 mm/z3fold.c:1293
Code: 20 93 ff 48 c7 c6 00 fd 7d 8b 48 89 ef e8 6d a1 d9 ff 90 0f 0b e8 a5 20 93 ff 48 c7 c6 60 fd 7d 8b 48 89 ef e8 56 a1 d9 ff 90 <0f> 0b e8 8e 20 93 ff 48 8d bb a0 00 00 00 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc900006c7420 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880404c4880 RSI: ffffffff8226cf3a RDI: ffff8880404c4cc4
RBP: ffffea0001523680 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90628e17 R11: 1ffff1100a910512 R12: ffffea00018d3c40
R13: ffffea00015236a8 R14: 0000000000000001 R15: ffffea0001523698
FS:  0000000000000000(0000) GS:ffff88802b700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f73c56dc CR3: 000000006ef52000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000009 DR6: 00000000fffe0ff0 DR7: 0000000000000600