================================================================== BUG: KASAN: wild-memory-access in memcpy_from_page include/linux/highmem.h:417 [inline] BUG: KASAN: wild-memory-access in hfsplus_bnode_read fs/hfsplus/bnode.c:32 [inline] BUG: KASAN: wild-memory-access in hfsplus_bnode_read_u16+0x146/0x2c0 fs/hfsplus/bnode.c:45 Read of size 1 at addr 000508800000103f by task kworker/u8:7/2915 CPU: 1 PID: 2915 Comm: kworker/u8:7 Not tainted 6.10.0-rc4-syzkaller-00052-ge5b3efbe1ab1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Workqueue: writeback wb_workfn (flush-7:0) Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_report+0xe8/0x550 mm/kasan/report.c:491 kasan_report+0x143/0x180 mm/kasan/report.c:601 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 memcpy_from_page include/linux/highmem.h:417 [inline] hfsplus_bnode_read fs/hfsplus/bnode.c:32 [inline] hfsplus_bnode_read_u16+0x146/0x2c0 fs/hfsplus/bnode.c:45 hfsplus_bnode_find+0x76d/0x10c0 fs/hfsplus/bnode.c:522 hfsplus_btree_write+0x24/0x4c0 fs/hfsplus/btree.c:289 hfsplus_system_write_inode fs/hfsplus/super.c:136 [inline] hfsplus_write_inode+0x4c4/0x5e0 fs/hfsplus/super.c:162 write_inode fs/fs-writeback.c:1497 [inline] __writeback_single_inode+0x6bb/0x10b0 fs/fs-writeback.c:1716 writeback_sb_inodes+0x99c/0x1380 fs/fs-writeback.c:1947 wb_writeback+0x481/0xd40 fs/fs-writeback.c:2127 wb_do_writeback fs/fs-writeback.c:2274 [inline] wb_workfn+0x410/0x1090 fs/fs-writeback.c:2314 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 ==================================================================