BUG: Bad page map in process syz-executor5 pte:59cd1007 pmd:11f97f067 page:ffffea00021ace60 count:0 mapcount:-1 mapping:0000000000000000 index:0x0 flags: 0x100000000000000() raw: 0100000000000000 ffffea00021ace68 ffffea00021ace68 0000000000000000 raw: 0000000000000000 0000000000000000 00000000fffffffe 0000000000000000 raw: 0000000000000000 0000000000000000 0000000000000001 0000000000000000 page dumped because: bad pte addr:00000000dd1b7625 vm_flags:100400fb anon_vma: (null) mapping:000000004290367e index:df file:kcov fault: (null) mmap:kcov_mmap readpage: (null) CPU: 1 PID: 10253 Comm: syz-executor5 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 get_signal+0x1425/0x1ef0 kernel/signal.c:2513 do_signal+0x11d/0x2060 arch/x86/kernel/signal.c:816 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline] prepare_exit_to_usermode+0x273/0x410 arch/x86/entry/common.c:197 syscall_return_slowpath+0xdb/0x700 arch/x86/entry/common.c:268 do_syscall_64+0xde/0x100 arch/x86/entry/common.c:294 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:00007f331a0cfcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00000000009301e8 RCX: 0000000000457099 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000009301e8 netlink: 12 bytes leftover after parsing attributes in process `syz-executor2'. RBP: 00000000009301e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000009301ec R13: 0000000000a3fb9f R14: 00007f331a0d09c0 R15: 0000000000000002 BUG: Bad rss-counter state mm:00000000074a6226 idx:0 val:13 input:  as /devices/virtual/input/input13 openvswitch: netlink: Key type 2560 is out of range max 29 netlink: 16 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor0'. input: syz0 as /devices/virtual/input/input15 input: syz0 as /devices/virtual/input/input16 openvswitch: netlink: Key type 2560 is out of range max 29 input: syz0 as /devices/virtual/input/input17 netlink: 8 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor2'. Unknown ioctl 1074808211 IPVS: ftp: loaded support on port[0] = 21 kernel msg: ebtables bug: please report to author: EBT_ENTRY_OR_ENTRIES shouldn't be set in distinguisher IPVS: ftp: loaded support on port[0] = 21 Unknown ioctl 1074808211 sctp: [Deprecated]: syz-executor5 (pid 10593) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor5 (pid 10609) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 kauditd_printk_skb: 50 callbacks suppressed audit: type=1326 audit(1535810621.935:62): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=10741 comm="syz-executor7" exe="/root/syz-executor7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x457099 code=0x0 audit: type=1326 audit(1535810622.003:63): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=10741 comm="syz-executor7" exe="/root/syz-executor7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x457099 code=0x0 IPVS: ftp: loaded support on port[0] = 21 sock: process `syz-executor6' is using obsolete getsockopt SO_BSDCOMPAT