BUG: Bad page map in process syz-executor6  pte:68cf8007 pmd:10895f067
page:ffffea000274dd00 count:0 mapcount:-1 mapping:0000000000000000 index:0x0
flags: 0x100000000000000()
raw: 0100000000000000 ffffea000274dd08 ffffea000274dd08 0000000000000000
raw: 0000000000000000 0000000000000000 00000000fffffffe 0000000000000000
raw: 0000000000000000 0000000000000000 0000000000000001 0000000000000000
page dumped because: bad pte
addr:000000001006598c vm_flags:100400fb anon_vma:          (null) mapping:00000000fb90a5f6 index:6
file:kcov fault:          (null) mmap:kcov_mmap readpage:          (null)
CPU: 1 PID: 19701 Comm: syz-executor6 Not tainted 4.18.0-rc4+ #24
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1e0 lib/dump_stack.c:113
 print_bad_pte+0xcae/0xde0 mm/memory.c:775
 zap_pte_range mm/memory.c:1336 [inline]
 zap_pmd_range mm/memory.c:1438 [inline]
 zap_pud_range mm/memory.c:1467 [inline]
 zap_p4d_range mm/memory.c:1488 [inline]
 unmap_page_range+0x22ea/0x3c00 mm/memory.c:1509
 unmap_single_vma+0x445/0x5e0 mm/memory.c:1554
 unmap_vmas+0x1f4/0x360 mm/memory.c:1584
 exit_mmap+0x570/0xad0 mm/mmap.c:3105
 __mmput+0x165/0x620 kernel/fork.c:971
 mmput+0xbb/0x110 kernel/fork.c:992
 exit_mm+0x6bb/0x7c0 kernel/exit.c:545
 do_exit+0xc12/0x3930 kernel/exit.c:854
 do_group_exit+0x1a0/0x360 kernel/exit.c:970
 get_signal+0x15c3/0x2190 kernel/signal.c:2468
 do_signal+0xca/0x2060 arch/x86/kernel/signal.c:816
 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline]
 prepare_exit_to_usermode+0x297/0x430 arch/x86/entry/common.c:197
 syscall_return_slowpath+0x108/0x800 arch/x86/entry/common.c:268
 do_syscall_64+0x1ad/0x230 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x455e29
Code: Bad RIP value.
RSP: 002b:00007f18a13c9ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000072bf68 RCX: 0000000000455e29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000072bf68
RBP: 000000000072bf68 R08: 0000000000000000 R09: 000000000072bf48
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000a3e80f R14: 00007f18a13ca9c0 R15: 0000000000000001
BUG: Bad rss-counter state mm:0000000089e63712 idx:0 val:13
sctp: [Deprecated]: syz-executor1 (pid 19729) Use of struct sctp_assoc_value in delayed_ack socket option.
Use struct sctp_sack_info instead
bridge0: port 2(bridge_slave_1) entered disabled state
bridge0: port 1(bridge_slave_0) entered disabled state
IPVS: set_ctl: invalid protocol: 115 0.0.0.0:20002