I just saw this happening:
[177170.508736] BUG: Bad page map in process tinyproxy pte:1b06d7dd pmd:1cbe3831
[177170.516009] page:dff59da0 count:0 mapcount:-1 mapping: (null) index:0x0
[177170.522837] flags: 0x10(dirty)
[177170.526052] page dumped because: bad pte
[177170.530081] addr:01421000 vm_flags:00100073 anon_vma:dcbb2540 mapping: (null) index:1421
[177170.538390] file: (null) fault: (null) mmap: (null) readpage: (null)
[177170.545209] CPU: 1 PID: 6474 Comm: tinyproxy Not tainted 4.9.65 #0
[177170.551501] Hardware name: Marvell Armada 380/385 (Device Tree)
[177170.557549] [<c0016010>] (unwind_backtrace) from [<c0012220>] (show_stack+0x10/0x14)
[177170.565420] [<c0012220>] (show_stack) from [<c0218580>] (dump_stack+0x7c/0x9c)
[177170.572769] [<c0218580>] (dump_stack) from [<c00b5140>] (print_bad_pte+0x154/0x18c)
[177170.580549] [<c00b5140>] (print_bad_pte) from [<c00b7394>] (unmap_page_range+0x4fc/0x554)
[177170.588851] [<c00b7394>] (unmap_page_range) from [<c00b781c>] (zap_page_range+0xd0/0x174)
[177170.597156] [<c00b781c>] (zap_page_range) from [<c00c468c>] (SyS_madvise+0x58c/0x7e8)
[177170.605111] [<c00c468c>] (SyS_madvise) from [<c000ed40>] (ret_fast_syscall+0x0/0x3c)
[177170.612984] Disabling lock debugging due to kernel taint
[177170.618830] BUG: Bad rss-counter state mm:dc174700 idx:0 val:-1
[177170.624899] BUG: Bad rss-counter state mm:dc174700 idx:1 val:1
[178472.320439] BUG: Bad page state in process swapper/0 pfn:1b06d
[178472.326478] page:dff59da0 count:-1 mapcount:-1 mapping: (null) index:0x0
[178472.333393] flags: 0x10(dirty)
[178472.336545] page dumped because: PAGE_FLAGS_CHECK_AT_PREP flag set
[178472.342837] bad because of flags: 0x10(dirty)
[178472.347296] Modules linked in: pppoe ppp_async pppox ppp_generic nf_nat_pptp nf_conntrack_pptp nf_conntrack_ipv6 iptable_nat ipt_REJECT ipt_MASQUERADE xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_quota xt_policy xt_pkttype xt_physdev xt_owner xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_helper xt_esp xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_addrtype xt_TCPMSS xt_REDIRECT xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY usblp ums_usbat ums_sddr55 ums_sddr09 ums_karma ums_jumpshot ums_isd200 ums_freecom ums_datafab ums_cypress ums_alauda ts_fsm ts_bm slhc rfcomm nf_reject_ipv4 nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_redirect nf_nat_proto_gre nf_nat_masquerade_ipv4 nf_nat_irc nf_conntrack_ipv4 nf_nat_ipv4 nf_nat_h323 nf_nat_amanda
[178472.419066] nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_rtcache nf_conntrack_proto_gre nf_conntrack_irc nf_conntrack_h323 nf_conntrack_broadcast ts_kmp nf_conntrack_amanda iptable_mangle iptable_filter ipt_ah ipt_ECN ip_tables hidp hci_uart crc_ccitt btusb btmrvl_sdio btmrvl btintel br_netfilter bnep bluetooth fuse sch_cake em_nbyte cls_basic sch_dsmark sch_pie sch_gred sch_teql act_ipt em_text em_meta sch_codel sch_sfq sch_fq act_police sch_prio em_cmp sch_red act_connmark nf_conntrack act_skbedit act_mirred em_u32 cls_u32 cls_tcindex cls_flow cls_route cls_fw sch_tbf sch_htb sch_hfsc sch_ingress hid evdev input_core mwlwifi mac80211 cfg80211 compat cryptodev xt_set ip_set_list_set ip_set_hash_netiface ip_set_hash_netport ip_set_hash_netnet
[178472.490579] ip_set_hash_net ip_set_hash_netportnet ip_set_hash_mac ip_set_hash_ipportnet ip_set_hash_ipportip ip_set_hash_ipport ip_set_hash_ipmark ip_set_hash_ip ip_set_bitmap_port ip_set_bitmap_ipmac ip_set_bitmap_ip ip_set nfnetlink ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables x_tables msdos bonding ifb tun vfat fat ntfs nls_utf8 nls_iso8859_1 nls_cp437 regmap_mmio sha512_generic sha256_generic seqiv jitterentropy_rng drbg md5 hmac ghash_generic gf128mul gcm ecb ctr cmac cbc authenc ohci_pci uhci_hcd ohci_platform ohci_hcd gpio_button_hotplug
[178472.542862] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G B 4.9.65 #0
[178472.550114] Hardware name: Marvell Armada 380/385 (Device Tree)
[178472.556162] [<c0016010>] (unwind_backtrace) from [<c0012220>] (show_stack+0x10/0x14)
[178472.564034] [<c0012220>] (show_stack) from [<c0218580>] (dump_stack+0x7c/0x9c)
[178472.571383] [<c0218580>] (dump_stack) from [<c009c000>] (bad_page+0x100/0x138)
[178472.578727] [<c009c000>] (bad_page) from [<c009df98>] (get_page_from_freelist+0x638/0x658)
[178472.587115] [<c009df98>] (get_page_from_freelist) from [<c009e3f8>] (__alloc_pages_nodemask+0xe8/0xa10)
[178472.596635] [<c009e3f8>] (__alloc_pages_nodemask) from [<c009edb8>] (__alloc_page_frag+0x34/0x14c)
[178472.605725] [<c009edb8>] (__alloc_page_frag) from [<c0399c80>] (netdev_alloc_frag+0x24/0x34)
[178472.614291] [<c0399c80>] (netdev_alloc_frag) from [<c03c6868>] (hwbm_pool_refill+0x18/0x68)
[178472.622771] [<c03c6868>] (hwbm_pool_refill) from [<c031e3a0>] (mvneta_poll+0x470/0x970)
[178472.630903] [<c031e3a0>] (mvneta_poll) from [<c03a76f4>] (net_rx_action+0xe8/0x2ac)
[178472.638684] [<c03a76f4>] (net_rx_action) from [<c002d364>] (__do_softirq+0xd0/0x204)
[178472.646550] [<c002d364>] (__do_softirq) from [<c002d71c>] (irq_exit+0x94/0xb8)
[178472.653887] [<c002d71c>] (irq_exit) from [<c0062154>] (__handle_domain_irq+0x90/0xb4)
[178472.661840] [<c0062154>] (__handle_domain_irq) from [<c0009428>] (gic_handle_irq+0x50/0x94)
[178472.670316] [<c0009428>] (gic_handle_irq) from [<c0012c8c>] (__irq_svc+0x6c/0x90)
[178472.677916] Exception stack(0xc062ff60 to 0xc062ffa8)
[178472.683077] ff60: 00000001 00000000 00000000 c001b1a0 00000000 c062e000 c0630fe4 00000001
[178472.691377] ff80: c062c168 00000000 c062ffb8 00000001 00000000 c062ffb0 c000f808 c000f80c
[178472.699675] ffa0: 60000013 ffffffff
[178472.703268] [<c0012c8c>] (__irq_svc) from [<c000f80c>] (arch_cpu_idle+0x2c/0x38)
[178472.710791] [<c000f80c>] (arch_cpu_idle) from [<c005b4a4>] (cpu_startup_entry+0xf0/0x19c)
[178472.719096] [<c005b4a4>] (cpu_startup_entry) from [<c05e8c54>] (start_kernel+0x39c/0x420)
[187564.266647] swap_free: Bad swap file entry 00000c00
[187564.271683] BUG: Bad page map in process grep pte:00060000 pmd:1cbe3831
[187564.278525] addr:00021000 vm_flags:00000875 anon_vma: (null) mapping:df068b94 index:11
[187564.286663] file:busybox fault:filemap_fault mmap:generic_file_readonly_mmap readpage:squashfs_readpage
[187564.296199] CPU: 0 PID: 4974 Comm: grep Tainted: G B 4.9.65 #0
[187564.303276] Hardware name: Marvell Armada 380/385 (Device Tree)
[187564.309321] [<c0016010>] (unwind_backtrace) from [<c0012220>] (show_stack+0x10/0x14)
[187564.317193] [<c0012220>] (show_stack) from [<c0218580>] (dump_stack+0x7c/0x9c)
[187564.324539] [<c0218580>] (dump_stack) from [<c00b5140>] (print_bad_pte+0x154/0x18c)
[187564.332319] [<c00b5140>] (print_bad_pte) from [<c00b718c>] (unmap_page_range+0x2f4/0x554)
[187564.340621] [<c00b718c>] (unmap_page_range) from [<c00b773c>] (unmap_vmas+0x44/0x54)
[187564.348487] [<c00b773c>] (unmap_vmas) from [<c00bc0fc>] (exit_mmap+0xc0/0x1bc)
[187564.355829] [<c00bc0fc>] (exit_mmap) from [<c0026ee8>] (mmput+0x38/0xf4)
[187564.362649] [<c0026ee8>] (mmput) from [<c002b650>] (do_exit+0x354/0x838)
[187564.369468] [<c002b650>] (do_exit) from [<c002cc64>] (do_group_exit+0x48/0xd0)
[187564.376810] [<c002cc64>] (do_group_exit) from [<c002ccfc>] (__wake_up_parent+0x0/0x18)
[187564.385112] BUG: Bad rss-counter state mm:ddb41880 idx:2 val:-1
Router is still running, but I assume these would lead to the reboots issues I have. Whats the meaning of this? Doesnt look good. Something with swap not working, or just filesystem problems maybe?
(Last edited by makedir on 13 Dec 2017, 15:07)