------------[ cut here ]------------ jfs_metapage_aops does not implement migrate_folio WARNING: CPU: 0 PID: 18093 at mm/migrate.c:957 fallback_migrate_folio mm/migrate.c:955 [inline] WARNING: CPU: 0 PID: 18093 at mm/migrate.c:957 move_to_new_folio+0x696/0x7a0 mm/migrate.c:1009 Modules linked in: CPU: 0 UID: 0 PID: 18093 Comm: syz.5.4724 Not tainted 6.15.0-syzkaller-07774-g90b83efa6701 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:fallback_migrate_folio mm/migrate.c:955 [inline] RIP: 0010:move_to_new_folio+0x696/0x7a0 mm/migrate.c:1009 Code: 0d 01 90 42 80 7c 3d 00 00 74 0a 48 8b 7c 24 20 e8 cf 56 fe ff 48 8b 44 24 20 48 8b 30 48 c7 c7 c0 a4 97 8b e8 7b 25 5f ff 90 <0f> 0b 90 90 49 bf 00 00 00 00 00 fc ff df e9 7e fd ff ff e8 02 39 RSP: 0018:ffffc90003d3ec50 EFLAGS: 00010246 RAX: 5fd762882c648a00 RBX: ffffea000048c900 RCX: 0000000000080000 RDX: ffffc9000cf8b000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: 1ffff1100b617463 R08: ffffffff8fa0b1b7 R09: 1ffffffff1f41636 R10: dffffc0000000000 R11: fffffbfff1f41637 R12: ffffea00013778c0 R13: ffff88805b0ba1f8 R14: ffffea000048c908 R15: dffffc0000000000 FS: 00007fd4382a66c0(0000) GS:ffff888125c66000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d30fff8 CR3: 0000000032ab9000 CR4: 0000000000350ef0 Call Trace: migrate_folio_move mm/migrate.c:1314 [inline] migrate_folios_move mm/migrate.c:1666 [inline] migrate_pages_batch+0x1c34/0x2830 mm/migrate.c:1913 migrate_pages_sync mm/migrate.c:1943 [inline] migrate_pages+0x1bcc/0x2930 mm/migrate.c:2052 compact_zone+0x23f4/0x4af0 mm/compaction.c:2689 compact_node mm/compaction.c:2958 [inline] compact_nodes mm/compaction.c:2980 [inline] sysctl_compaction_handler+0x3a4/0x7b0 mm/compaction.c:3031 proc_sys_call_handler+0x50c/0x7c0 fs/proc/proc_sysctl.c:601 iter_file_splice_write+0x93a/0x1000 fs/splice.c:738 do_splice_from fs/splice.c:935 [inline] direct_splice_actor+0x101/0x160 fs/splice.c:1158 splice_direct_to_actor+0x5a8/0xcc0 fs/splice.c:1102 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0x181/0x270 fs/splice.c:1227 do_sendfile+0x4da/0x7e0 fs/read_write.c:1370 __do_sys_sendfile64 fs/read_write.c:1425 [inline] __se_sys_sendfile64+0xd9/0x190 fs/read_write.c:1417 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd43738e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd4382a6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fd4375b5fa0 RCX: 00007fd43738e969 RDX: 00002000000000c0 RSI: 0000000000000003 RDI: 0000000000000004 RBP: 00007fd437410ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000000a R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd4375b5fa0 R15: 00007ffd3c2b0558