================================================================== BUG: KASAN: invalid-access in copy_page+0x10/0xd0 arch/arm64/lib/copy_page.S:26 Read at addr fdff00000e400000 by task syz-executor.1/2736 Pointer tag: [fd], memory tag: [f7] CPU: 1 PID: 2736 Comm: syz-executor.1 Not tainted 6.0.0-syzkaller-06172-g93ed07a23fd0 #0 Hardware name: linux,dummy-virt (DT) Call trace: dump_backtrace.part.0+0xe0/0xf0 arch/arm64/kernel/stacktrace.c:156 dump_backtrace arch/arm64/kernel/stacktrace.c:162 [inline] show_stack+0x18/0x40 arch/arm64/kernel/stacktrace.c:163 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x68/0x84 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:317 [inline] print_report+0x104/0x604 mm/kasan/report.c:433 kasan_report+0x8c/0xb0 mm/kasan/report.c:495 __do_kernel_fault+0x11c/0x1bc arch/arm64/mm/fault.c:319 do_bad_area arch/arm64/mm/fault.c:469 [inline] do_tag_check_fault+0x78/0x90 arch/arm64/mm/fault.c:745 do_mem_abort+0x44/0x94 arch/arm64/mm/fault.c:821 el1_abort+0x40/0x60 arch/arm64/kernel/entry-common.c:366 el1h_64_sync_handler+0xd8/0xe4 arch/arm64/kernel/entry-common.c:426 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:576 copy_page+0x10/0xd0 arch/arm64/lib/copy_page.S:26 copy_user_highpage+0x18/0x40 arch/arm64/mm/copypage.c:34 __wp_page_copy_user mm/memory.c:2856 [inline] wp_page_copy+0xa4/0x690 mm/memory.c:3117 do_wp_page+0x138/0x620 mm/memory.c:3479 handle_pte_fault mm/memory.c:4935 [inline] __handle_mm_fault+0x660/0xe70 mm/memory.c:5059 handle_mm_fault+0xec/0x280 mm/memory.c:5157 __do_page_fault arch/arm64/mm/fault.c:502 [inline] do_page_fault+0x17c/0x3d0 arch/arm64/mm/fault.c:602 do_mem_abort+0x44/0x94 arch/arm64/mm/fault.c:821 el0_da+0x30/0xb4 arch/arm64/kernel/entry-common.c:514 el0t_64_sync_handler+0x68/0xc0 arch/arm64/kernel/entry-common.c:657 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:581 The buggy address belongs to the physical page: page:00000000d4c3ae28 refcount:2 mapcount:1 mapping:0000000000000000 index:0xffffffffe pfn:0x4e400 memcg:f4ff000013444000 anon flags: 0x1ffc0800208001c(uptodate|dirty|lru|swapbacked|arch_2|node=0|zone=0|lastcpupid=0x7ff|kasantag=0x2) raw: 01ffc0800208001c fffffc0000382108 f4ff000006434000 f0ff000007474c01 raw: 0000000ffffffffe 0000000000000000 0000000200000000 f4ff000013444000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff00000e3ffe00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff00000e3fff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff00000e400000: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 ^ ffff00000e400100: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 ffff00000e400200: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 ==================================================================