__sys_recvmsg+0x16b/0x220 net/socket.c:2868 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:387 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:412 entry_SYSENTER_compat_after_hwframe+0x84/0x8e ------------[ cut here ]------------ kernel BUG at mm/z3fold.c:1293! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 2 UID: 0 PID: 45 Comm: kcompactd1 Not tainted 6.14.0-rc6-syzkaller-00189-gb35233e7bfa0 #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: 1a 93 ff 48 c7 c6 c0 ff 7d 8b 48 89 ef e8 a1 a2 d9 ff 90 0f 0b e8 69 1a 93 ff 48 c7 c6 20 00 7e 8b 48 89 ef e8 8a a2 d9 ff 90 <0f> 0b e8 52 1a 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: ffff888040ecc880 RSI: ffffffff8226d766 RDI: ffff888040ecccc4 RBP: ffffea00015da240 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff90628517 R11: 0000000000000003 R12: ffffea0001c57d80 R13: ffffea00015da268 R14: 0000000000000001 R15: ffffea00015da258 FS: 0000000000000000(0000) GS:ffff88802b600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000f73d5bf0 CR3: 00000000671a0000 CR4: 0000000000352ef0 Call Trace: 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+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 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:z3fold_page_migrate+0xc37/0x12d0 mm/z3fold.c:1293 Code: 1a 93 ff 48 c7 c6 c0 ff 7d 8b 48 89 ef e8 a1 a2 d9 ff 90 0f 0b e8 69 1a 93 ff 48 c7 c6 20 00 7e 8b 48 89 ef e8 8a a2 d9 ff 90 <0f> 0b e8 52 1a 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: ffff888040ecc880 RSI: ffffffff8226d766 RDI: ffff888040ecccc4 RBP: ffffea00015da240 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff90628517 R11: 0000000000000003 R12: ffffea0001c57d80 R13: ffffea00015da268 R14: 0000000000000001 R15: ffffea00015da258 FS: 0000000000000000(0000) GS:ffff88802b600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000579124c0 CR3: 000000002308a000 CR4: 0000000000352ef0