BUG: Bad page map in process syz-executor7  pte:502c1007 pmd:a7007067
page:ffffea0001e10860 count:0 mapcount:-1 mapping:0000000000000000 index:0x0
flags: 0x100000000000000()
raw: 0100000000000000 ffffea0001e10868 ffffea0001e10868 0000000000000000
raw: 0000000000000000 0000000000000000 00000000fffffffe 0000000000000000
raw: 0000000000000000 0000000000000000 0000000000000001 0000000000000000
page dumped because: bad pte
addr:00000000617e0b13 vm_flags:100400fb anon_vma:          (null) mapping:00000000b0b75b2f index:2c
file:kcov fault:          (null) mmap:kcov_mmap readpage:          (null)
CPU: 0 PID: 19258 Comm: syz-executor7 Not tainted 4.19.0-rc1+ #40
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+0x14b/0x190 lib/dump_stack.c:113
 print_bad_pte+0xc47/0xd40 mm/memory.c:774
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1441 [inline]
 zap_pud_range mm/memory.c:1470 [inline]
 zap_p4d_range mm/memory.c:1491 [inline]
 unmap_page_range+0x1ee7/0x4170 mm/memory.c:1512
 unmap_single_vma+0x445/0x5e0 mm/memory.c:1557
 unmap_vmas+0x251/0x380 mm/memory.c:1587
 exit_mmap+0x4b7/0x940 mm/mmap.c:3093
 __mmput+0x154/0x5f0 kernel/fork.c:1003
 mmput+0xa7/0xe0 kernel/fork.c:1024
 exit_mm+0x6dd/0x790 kernel/exit.c:546
 do_exit+0xbf7/0x3890 kernel/exit.c:856
 do_group_exit+0x1a0/0x350 kernel/exit.c:972
 __do_sys_exit_group+0x21/0x30 kernel/exit.c:983
 __se_sys_exit_group+0x14/0x20 kernel/exit.c:981
 __x64_sys_exit_group+0x1d/0x20 kernel/exit.c:981
 do_syscall_64+0xb8/0x100 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457099
Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:0000000000a3fda8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 0000000000457099
RDX: 0000000000410c51 RSI: fffffffffffffff7 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffffffffffff R09: 0000000000067e85
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000008
R13: 0000000000067e85 R14: 0000000000000159 R15: badc0ffeebadface
BUG: Bad rss-counter state mm:00000000988d2b5c idx:0 val:13
IPVS: set_ctl: invalid protocol: 103 172.20.20.28:20002
IPVS: set_ctl: invalid protocol: 103 172.20.20.28:20002
syz-executor4 (19443): /proc/19439/oom_adj is deprecated, please use /proc/19439/oom_score_adj instead.
device ip6_vti0 entered promiscuous mode
device ip6_vti0 left promiscuous mode
device ip6_vti0 entered promiscuous mode
device ip6_vti0 left promiscuous mode
Dead loop on virtual device ip6_vti0, fix it urgently!
IPVS: Unknown mcast interface: bcsh0
IPVS: Unknown mcast interface: bcsh0
input: ÿÿÿüÿÿÿ as /devices/virtual/input/input50
input: failed to attach handler leds to device input50, error: -6
input: ÿÿÿüÿÿÿ as /devices/virtual/input/input51
input: failed to attach handler leds to device input51, error: -6
Unknown ioctl 4731