BUG: Bad page map in process syz.2.242  pte:ffff8881e0d931c0 pmd:1edaff067
addr:00007fa7ce439000 vm_flags:100400fb anon_vma:0000000000000000 mapping:ffff8881f58c1d58 index:661
file:kcov fault:0x0 mmap:kcov_mmap readpage:0x0
CPU: 0 PID: 1148 Comm: syz.2.242 Not tainted 5.4.289-syzkaller-00030-gcb850525fc3e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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:560
 vm_normal_page+0x135/0x1d0 mm/memory.c:649
 zap_pte_range mm/memory.c:1078 [inline]
 zap_pmd_range mm/memory.c:1222 [inline]
 zap_pud_range mm/memory.c:1251 [inline]
 zap_p4d_range mm/memory.c:1272 [inline]
 unmap_page_range+0xc00/0x2620 mm/memory.c:1293
 unmap_single_vma mm/memory.c:1338 [inline]
 unmap_vmas+0x355/0x4b0 mm/memory.c:1370
 exit_mmap+0x2bc/0x520 mm/mmap.c:3191
 __mmput+0x8e/0x2c0 kernel/fork.c:1101
 exit_mm kernel/exit.c:538 [inline]
 do_exit+0xc08/0x2bc0 kernel/exit.c:848
 do_group_exit+0x138/0x300 kernel/exit.c:984
 get_signal+0xdb1/0x1440 kernel/signal.c:2738
 do_signal+0xb0/0x11f0 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0xc0/0x1a0 arch/x86/entry/common.c:159
 prepare_exit_to_usermode+0x199/0x200 arch/x86/entry/common.c:194
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7fa7cf76bde9
Code: Bad RIP value.
RSP: 002b:00007fa7cddd60e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fa7cf984fa8 RCX: 00007fa7cf76bde9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa7cf984fa8
RBP: 00007fa7cf984fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa7cf984fac
R13: 0000000000000000 R14: 00007ffecc387930 R15: 00007ffecc387a18
BUG: Bad rss-counter state mm:ffff8881f24f97c0 type:MM_FILEPAGES val:2