------------[ cut here ]------------ kernel BUG at fs/buffer.c:1859! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 13726 Comm: syz-executor.4 Not tainted 6.4.0-rc5-syzkaller-g177239177378 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __block_write_full_page+0xf44/0x1048 fs/buffer.c:1859 lr : __block_write_full_page+0xf44/0x1048 fs/buffer.c:1859 sp : ffff8000983d6bf0 x29: ffff8000983d6c40 x28: fffffc00038dc240 x27: 1fffe00020d7e8cb x26: dfff800000000000 x25: 0000000000000080 x24: 0000000000000002 x23: ffff8000983d70d0 x22: 0000000000000000 x21: 05ffc0000000a02f x20: ffff00010c0532b8 x19: ffff00010c0532b8 x18: ffff8000983d6718 x17: ffff80008debd000 x16: ffff80008a43c0e0 x15: 0000000000000000 x14: 1ffff00011bd80ac x13: dfff800000000000 x12: 0000000000000003 x11: 0000000000040000 x10: 000000000003ffff x9 : ffff8000a047c000 x8 : 0000000000040000 x7 : ffff8000807b1d58 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000007 x1 : 0000000000008000 x0 : 0000000000000000 Call trace: __block_write_full_page+0xf44/0x1048 fs/buffer.c:1859 block_write_full_page+0x2ec/0x384 hfs_writepage+0x30/0x40 fs/hfs/inode.c:34 writeout mm/migrate.c:901 [inline] fallback_migrate_folio mm/migrate.c:925 [inline] move_to_new_folio+0x550/0xc34 mm/migrate.c:975 migrate_folio_move mm/migrate.c:1275 [inline] migrate_pages_batch+0x1ad0/0x26a4 mm/migrate.c:1789 migrate_pages_sync mm/migrate.c:1889 [inline] migrate_pages+0x1bc4/0x2f9c mm/migrate.c:1970 compact_zone+0x2470/0x3e9c mm/compaction.c:2439 compact_node+0x234/0x3c0 mm/compaction.c:2734 compact_nodes mm/compaction.c:2747 [inline] sysctl_compaction_handler+0xb0/0x164 mm/compaction.c:2784 proc_sys_call_handler+0x4cc/0x7cc fs/proc/proc_sysctl.c:604 proc_sys_write+0x2c/0x3c fs/proc/proc_sysctl.c:630 call_write_iter include/linux/fs.h:1868 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x618/0x918 fs/read_write.c:584 ksys_write+0x15c/0x26c fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:646 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x244 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Code: b50000b6 97e6a8ed 14000006 97e6a8eb (d4210000) ---[ end trace 0000000000000000 ]---