BUG: Bad page map in process syz-executor.1 pte:ffff8881e3187140 pmd:1ba6ff067 addr:00007f5799a39000 vm_flags:100400fb anon_vma:0000000000000000 mapping:ffff8881f1122070 index:1ab file:kcov fault:0x0 mmap:kcov_mmap readpage:0x0 CPU: 0 PID: 6115 Comm: syz-executor.1 Not tainted 5.4.265-syzkaller-00001-g1b3143b9b166 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d8/0x241 lib/dump_stack.c:118 print_bad_pte+0x511/0x530 mm/memory.c:559 vm_normal_page+0x135/0x1d0 mm/memory.c:648 zap_pte_range mm/memory.c:1077 [inline] zap_pmd_range mm/memory.c:1221 [inline] zap_pud_range mm/memory.c:1250 [inline] zap_p4d_range mm/memory.c:1271 [inline] unmap_page_range+0xc00/0x2620 mm/memory.c:1292 unmap_single_vma mm/memory.c:1337 [inline] unmap_vmas+0x355/0x4b0 mm/memory.c:1369 exit_mmap+0x2bc/0x520 mm/mmap.c:3186 __mmput+0x8e/0x2c0 kernel/fork.c:1101 copy_process+0x1f42/0x3230 kernel/fork.c:2298 _do_fork+0x197/0x900 kernel/fork.c:2399 __do_sys_clone kernel/fork.c:2557 [inline] __se_sys_clone kernel/fork.c:2538 [inline] __x64_sys_clone+0x26b/0x2c0 kernel/fork.c:2538 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 BUG: Bad rss-counter state mm:ffff8881bae8b900 type:MM_FILEPAGES val:1