BUG: Bad page map in process syz-executor4 pte:679bb007 pmd:10ca5f067 page:ffffea00026da620 count:0 mapcount:-1 mapping:0000000000000000 index:0x0 flags: 0x100000000000000() raw: 0100000000000000 ffffea00026da628 ffffea00026da628 0000000000000000 raw: 0000000000000000 0000000000000000 00000000fffffffe 0000000000000000 raw: 0000000000000000 0000000000000000 0000000000000001 0000000000000000 page dumped because: bad pte addr:00000000014860af vm_flags:100400fb anon_vma: (null) mapping:000000009440a7f7 index:10a file:kcov fault: (null) mmap:kcov_mmap readpage: (null) CPU: 1 PID: 16006 Comm: syz-executor4 Not tainted 4.19.0-rc1+ #36 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+0x1ab/0x220 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x457089 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:00007fb6d44edc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: 0000000000000000 RBX: 00007fb6d44ee6d4 RCX: 0000000000457089 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000008000000 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d6d80 R14: 00000000004ca16f R15: 0000000000000000 BUG: Bad rss-counter state mm:00000000baeb8e4d idx:0 val:6 sctp: [Deprecated]: syz-executor3 (pid 16191) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead device bond0 entered promiscuous mode device bond_slave_0 entered promiscuous mode device bond_slave_1 entered promiscuous mode device bond0 left promiscuous mode device bond_slave_0 left promiscuous mode device bond_slave_1 left promiscuous mode device bond0 entered promiscuous mode device bond_slave_0 entered promiscuous mode device bond_slave_1 entered promiscuous mode device bond0 left promiscuous mode device bond_slave_0 left promiscuous mode device bond_slave_1 left promiscuous mode sctp: [Deprecated]: syz-executor3 (pid 16242) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor3 (pid 16242) Use of int in maxseg socket option. Use struct sctp_assoc_value instead IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21