{"action":"created","issue":{"url":"https://api.github.com/repos/zfsonlinux/zfs/issues/4048","labels_url":"https://api.github.com/repos/zfsonlinux/zfs/issues/4048/labels{/name}","comments_url":"https://api.github.com/repos/zfsonlinux/zfs/issues/4048/comments","events_url":"https://api.github.com/repos/zfsonlinux/zfs/issues/4048/events","html_url":"https://github.com/zfsonlinux/zfs/issues/4048","id":119067730,"number":4048,"title":"Kernel Oops on 32-bit ARM","user":{"login":"gordan-bobic","id":5469306,"avatar_url":"https://avatars.githubusercontent.com/u/5469306?v=3","gravatar_id":"","url":"https://api.github.com/users/gordan-bobic","html_url":"https://github.com/gordan-bobic","followers_url":"https://api.github.com/users/gordan-bobic/followers","following_url":"https://api.github.com/users/gordan-bobic/following{/other_user}","gists_url":"https://api.github.com/users/gordan-bobic/gists{/gist_id}","starred_url":"https://api.github.com/users/gordan-bobic/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gordan-bobic/subscriptions","organizations_url":"https://api.github.com/users/gordan-bobic/orgs","repos_url":"https://api.github.com/users/gordan-bobic/repos","events_url":"https://api.github.com/users/gordan-bobic/events{/privacy}","received_events_url":"https://api.github.com/users/gordan-bobic/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":{"url":"https://api.github.com/repos/zfsonlinux/zfs/milestones/11","html_url":"https://github.com/zfsonlinux/zfs/milestones/0.7.0","labels_url":"https://api.github.com/repos/zfsonlinux/zfs/milestones/11/labels","id":7013,"number":11,"title":"0.7.0","description":"ZFS on Linux v0.7.0 - Memory management\r\n\r\n","creator":{"login":"behlendorf","id":148917,"avatar_url":"https://avatars.githubusercontent.com/u/148917?v=3","gravatar_id":"","url":"https://api.github.com/users/behlendorf","html_url":"https://github.com/behlendorf","followers_url":"https://api.github.com/users/behlendorf/followers","following_url":"https://api.github.com/users/behlendorf/following{/other_user}","gists_url":"https://api.github.com/users/behlendorf/gists{/gist_id}","starred_url":"https://api.github.com/users/behlendorf/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/behlendorf/subscriptions","organizations_url":"https://api.github.com/users/behlendorf/orgs","repos_url":"https://api.github.com/users/behlendorf/repos","events_url":"https://api.github.com/users/behlendorf/events{/privacy}","received_events_url":"https://api.github.com/users/behlendorf/received_events","type":"User","site_admin":false},"open_issues":171,"closed_issues":134,"state":"open","created_at":"2011-05-03T17:38:46Z","updated_at":"2015-12-07T20:42:16Z","due_on":null,"closed_at":null},"comments":10,"created_at":"2015-11-26T15:45:45Z","updated_at":"2015-12-07T23:16:21Z","closed_at":null,"body":"[ 5259.711586] Unable to handle kernel NULL pointer dereference at virtual address 00000048\r\n[ 5259.711600] pgd = c0004000\r\n[ 5259.711609] [00000048] *pgd=00000000\r\n[ 5259.711624] Internal error: Oops: 17 [#1] SMP ARM\r\n[ 5259.711632] Modules linked in: xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_raw iptable_filter ip_tables x_tables cmac ecb snd_soc_snow snd_soc_core snd_compress snd_pcm_dmaengine snd_pcm snd_timer snd soundcore uvcvideo videobuf2_vmalloc videobuf2_memops btmrvl_sdio mwifiex_sdio btmrvl videobuf2_core mwifiex v4l2_common videodev bluetooth cfg80211 media s5p_sss zfs(PO) zunicode(PO) zavl(PO) zcommon(PO) znvpair(PO) spl(O) zlib_deflate ipv6\r\n[ 5259.711891] CPU: 3 PID: 484 Comm: kswapd0 Tainted: P           O    4.3.0-1.el7.armv5tel #1\r\n[ 5259.711898] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)\r\n[ 5259.711905] task: e063e900 ti: e04c8000 task.ti: e04c8000\r\n[ 5259.712227] PC is at arc_kmem_reap_now+0x64/0xec [zfs]\r\n[ 5259.712243] LR is at __wake_up_bit+0x20/0x54\r\n[ 5259.712252] pc : [<bf114d3c>]    lr : [<c0054b40>]    psr: 00000113\r\nsp : e04c9d90  ip : e04c9d50  fp : 0000008a\r\n[ 5259.712263] r10: 00002001  r9 : bf302b08  r8 : bf2e2b08\r\n[ 5259.712271] r7 : e04d0d00  r6 : e04d0d00  r5 : 00000000  r4 : 00007000\r\n[ 5259.712279] r3 : e04d0b00  r2 : 00000000  r1 : 00000000  r0 : 00000000\r\n[ 5259.712289] Flags: nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none\r\n[ 5259.712297] Control: 10c5387d  Table: 259b006a  DAC: 00000051\r\n[ 5259.712306] Process kswapd0 (pid: 484, stack limit = 0xe04c8210)\r\n[ 5259.712315] Stack: (0xe04c9d90 to 0xe04ca000)\r\n[ 5259.712324] 9d80:                                     ffffffff 00008007 00000000 e04c9df8\r\n[ 5259.712335] 9da0: bf26ea80 00000000 c066240c bf11afbc 00000000 bf1edad0 00008007 00000080\r\n[ 5259.712344] 9dc0: 00000000 c00add48 e04c9e1c e04c9e18 00000000 00000080 00000056 00000000\r\n[ 5259.712354] 9de0: 00000000 00000000 0000015c 000000d0 00000000 0001024c 000000d0 00000080\r\n[ 5259.712363] 9e00: 00000000 00000000 c0697500 c0697500 e04c9f04 0000002f c0697810 00000000\r\n[ 5259.712373] 9e20: 00000004 00000000 00000001 c00afcc0 00000000 c004fbcc 00000000 00000000\r\n[ 5259.712384] 9e40: dc7e1400 0001024c 00000000 e04c9f00 00000000 00000008 00000000 e04c8000\r\n[ 5259.712394] 9e60: 000008c1 00000001 00000000 00000000 00000000 00000000 00000481 00000000\r\n[ 5259.712405] 9e80: 00000000 0000003f 00000041 00000481 e04c9e90 e04c9e90 e04c9e98 e04c9e98\r\n[ 5259.712414] 9ea0: e04c9ea0 e04c9ea0 e063e900 c06970c0 00000001 00000000 c0697500 00000000\r\n[ 5259.712424] 9ec0: 0000044a c06977bc e063e900 c00b0938 c000a608 ffffffff 00000000 000004a0\r\n[ 5259.712433] 9ee0: 00000000 00000001 c0662418 c0662414 00000001 00000000 e04c8000 00000001\r\n[ 5259.712442] 9f00: 00000641 000008c1 000000d0 00000000 00000000 00000000 00000009 00000007\r\n[ 5259.712452] 9f20: 00000057 0000002f c00b031c e060e700 00000000 c06970c0 c00b031c 00000000\r\n[ 5259.712461] 9f40: 00000000 00000000 00000000 c003c280 0420804c 00000000 c066b930 c06970c0\r\n[ 5259.712471] 9f60: 00000000 00000000 dead4ead ffffffff ffffffff e04c9f74 e04c9f74 00000000\r\n[ 5259.712481] 9f80: 00000000 dead4ead ffffffff ffffffff e04c9f90 e04c9f90 e04c9fac e060e700\r\n[ 5259.712490] 9fa0: c003c1a4 00000000 00000000 c000edf8 00000000 00000000 00000000 00000000\r\n[ 5259.712499] 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000\r\n[ 5259.712508] 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000\r\n[ 5259.712706] [<bf114d3c>] (arc_kmem_reap_now [zfs]) from [<bf11afbc>] (arc_shrinker_func_scan_objects+0xb8/0x1ac [zfs])\r\n[ 5259.712787] [<bf11afbc>] (arc_shrinker_func_scan_objects [zfs]) from [<c00add48>] (shrink_slab.part.0.constprop.8+0x1b0/0x260)\r\n[ 5259.712803] [<c00add48>] (shrink_slab.part.0.constprop.8) from [<c00afcc0>] (shrink_zone+0x5e4/0x6e4)\r\n[ 5259.712814] [<c00afcc0>] (shrink_zone) from [<c00b0938>] (kswapd+0x61c/0x820)\r\n[ 5259.712830] [<c00b0938>] (kswapd) from [<c003c280>] (kthread+0xdc/0xf0)\r\n[ 5259.712846] [<c003c280>] (kthread) from [<c000edf8>] (ret_from_fork+0x14/0x3c)\r\n[ 5259.712860] Code: e7945008 e1550003 0a000002 e1a00005 (e5951048) \r\n[ 5259.712919] ---[ end trace 58e3248830d2802c ]---\r\n[ 5259.759073] Unable to handle kernel NULL pointer dereference at virtual address 00000048\r\n[ 5259.759090] pgd = dcfd0000\r\n[ 5259.759099] [00000048] *pgd=00000000\r\n[ 5259.759115] Internal error: Oops: 5 [#2] SMP ARM\r\n[ 5259.759123] Modules linked in: xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_raw iptable_filter ip_tables x_tables cmac ecb snd_soc_snow snd_soc_core snd_compress snd_pcm_dmaengine snd_pcm snd_timer snd soundcore uvcvideo videobuf2_vmalloc videobuf2_memops btmrvl_sdio mwifiex_sdio btmrvl videobuf2_core mwifiex v4l2_common videodev bluetooth cfg80211 media s5p_sss zfs(PO) zunicode(PO) zavl(PO) zcommon(PO) znvpair(PO) spl(O) zlib_deflate ipv6\r\n[ 5259.759391] CPU: 0 PID: 4239 Comm: systemd-journal Tainted: P      D    O    4.3.0-1.el7.armv5tel #1\r\n[ 5259.759400] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)\r\n[ 5259.759409] task: e0553c00 ti: dcfa0000 task.ti: dcfa0000\r\n[ 5259.759772] PC is at arc_kmem_reap_now+0x64/0xec [zfs]\r\n[ 5259.759784] LR is at __wake_up_bit+0x20/0x54\r\n[ 5259.759794] pc : [<bf114d3c>]    lr : [<c0054b40>]    psr: 00000113\r\nsp : dcfa1c08  ip : dcfa1bc8  fp : 00000098\r\n[ 5259.759803] r10: 00001fe0  r9 : bf302b08  r8 : bf2e2b08\r\n[ 5259.759812] r7 : e04d0d00  r6 : e04d0d00  r5 : 00000000  r4 : 00007000\r\n[ 5259.759820] r3 : e04d0b00  r2 : 00000000  r1 : 00000000  r0 : 00000000\r\n[ 5259.759830] Flags: nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none\r\n[ 5259.759838] Control: 10c5387d  Table: 3cfd006a  DAC: 00000051\r\n[ 5259.759846] Process systemd-journal (pid: 4239, stack limit = 0xdcfa0210)\r\n[ 5259.759854] Stack: (0xdcfa1c08 to 0xdcfa2000)\r\n[ 5259.759864] 1c00:                   ffffffff 00007f82 00000000 dcfa1c70 bf26ea80 00000000\r\n[ 5259.759874] 1c20: c066240c bf11afbc 00000000 bf1edad0 00007f82 00000080 00000000 c00add48\r\n[ 5259.759884] 1c40: dcfa1c94 dcfa1c90 00000000 00000080 0000001e 00000000 00000000 00000000\r\n[ 5259.759893] 1c60: 0000007c 000200da 00000000 0001020d 000200da 00000080 00000000 00000000\r\n[ 5259.759903] 1c80: c0697500 c0697500 dcfa1d74 00000036 c0697810 00000000 00000004 00000000\r\n[ 5259.759912] 1ca0: 00000020 c00afcc0 000002cb 00000000 00000000 00000000 00000000 0001020d\r\n[ 5259.759921] 1cc0: 00000000 dcfa1df8 00000000 00000017 00000000 dcfa0000 00000020 00000001\r\n[ 5259.759931] 1ce0: 00000000 00000000 00000000 00000000 e135202c 00000000 00000000 0000001f\r\n[ 5259.759941] 1d00: 00000020 e135202c dcfa1d08 dcfa1d08 dcfa1d10 dcfa1d10 dcfa1d18 dcfa1d18\r\n[ 5259.759951] 1d20: de1dc100 c0697500 c0697d84 c0662420 0000001b 00000000 00000002 00000001\r\n[ 5259.759961] 1d40: 00000000 c00b0254 000002dc c00a721c 000000c0 000200da c0697d80 0000000c\r\n[ 5259.759971] 1d60: c0697d94 00000000 00000001 00000002 60000113 00000020 000200da 00000000\r\n[ 5259.759980] 1d80: 00000000 00000000 0000000a 00000007 0000001f 00000036 00000000 000200da\r\n[ 5259.759989] 1da0: dcfa0000 000000c0 00000000 00000000 00000001 00000000 00000000 c00a7918\r\n[ 5259.759999] 1dc0: 00000000 dcfa1df4 dcfa1df3 dcfa1dc8 00000000 00000040 00000000 00000050\r\n[ 5259.760008] 1de0: 000000c0 00000000 00000010 00000002 006d3480 00000000 00001572 c042b8ec\r\n[ 5259.760017] 1e00: 00000000 c00bd98c c0697d80 00000000 c0697500 00000001 00000002 00000002\r\n[ 5259.760027] 1e20: c9dfd000 c514faa8 b0efb000 00000000 c9dfd3ec dcfd0000 00000000 e0e35f80\r\n[ 5259.760037] 1e40: c9dfd000 c00c0ebc 00000001 c0665140 20000193 c042b8ec 80000193 c042b8ec\r\n[ 5259.760046] 1e60: 00000587 00000055 000000fb 000003ec dcfd2c38 14da126c 00000000 e0553c48\r\n[ 5259.760056] 1e80: dd77f0c0 001b46e9 00000000 c004819c 00000001 e0f10900 0000232d dcfa1fb0\r\n[ 5259.760066] 1ea0: b0efb000 00000055 e0553c00 e0e35f80 00000817 e0e35fc4 c514faa8 c001a184\r\n[ 5259.760077] 1ec0: a09b3275 000004c8 00f1ef33 00000000 e134f190 00000000 b0efa000 00000000\r\n[ 5259.760087] 1ee0: 00000800 00000000 de1dc100 00000817 b0efb000 c066cde4 dcfa1fb0 10c5387d\r\n[ 5259.760097] 1f00: 00000000 beffcda0 b6efd928 c00092b8 dc490a00 c042b8fc e0553c00 c003fe2c\r\n[ 5259.760108] 1f20: c000a608 ffffffff 00000000 c003cf48 dba5a018 e0553c00 e134f140 de1dc100\r\n[ 5259.760118] 1f40: e0e35f80 e076d500 c0668e84 c0665140 dcfa1f8c c0427914 c0662568 00000000\r\n[ 5259.760126] 1f60: e0c10000 00000001 00000000 dcfa0000 dcfa1fb0 00000000 10c5387d 00000000\r\n[ 5259.760136] 1f80: dcfa0000 beffcda0 dcfa1f9c c0427b98 dcfa1fa0 dcfa0000 b6efd928 b6d6fb88\r\n[ 5259.760144] 1fa0: 20000010 ffffffff 10c5387d c00132fc b0745008 00000000 0088b000 b0efb000\r\n[ 5259.760153] 1fc0: 7f5b4d70 ffffffff 7f5b4d70 b6fc6eb8 7f5b4cb8 00000000 beffcda0 b6efd928\r\n[ 5259.760162] 1fe0: 00000000 beffcd18 b6ef43e0 b6d6fb88 20000010 ffffffff 00000000 00000000\r\n[ 5259.760351] [<bf114d3c>] (arc_kmem_reap_now [zfs]) from [<bf11afbc>] (arc_shrinker_func_scan_objects+0xb8/0x1ac [zfs])\r\n[ 5259.760428] [<bf11afbc>] (arc_shrinker_func_scan_objects [zfs]) from [<c00add48>] (shrink_slab.part.0.constprop.8+0x1b0/0x260)\r\n[ 5259.760443] [<c00add48>] (shrink_slab.part.0.constprop.8) from [<c00afcc0>] (shrink_zone+0x5e4/0x6e4)\r\n[ 5259.760456] [<c00afcc0>] (shrink_zone) from [<c00b0254>] (try_to_free_pages+0x494/0x55c)\r\n[ 5259.760474] [<c00b0254>] (try_to_free_pages) from [<c00a7918>] (__alloc_pages_nodemask+0x28c/0x74c)\r\n[ 5259.760493] [<c00a7918>] (__alloc_pages_nodemask) from [<c00c0ebc>] (handle_mm_fault+0x208/0xc7c)\r\n[ 5259.760512] [<c00c0ebc>] (handle_mm_fault) from [<c001a184>] (do_page_fault+0x12c/0x32c)\r\n[ 5259.760526] [<c001a184>] (do_page_fault) from [<c00092b8>] (do_DataAbort+0x34/0xb4)\r\n[ 5259.760537] [<c00092b8>] (do_DataAbort) from [<c00132fc>] (__dabt_usr+0x3c/0x40)\r\n[ 5259.760545] Exception stack(0xdcfa1fb0 to 0xdcfa1ff8)\r\n[ 5259.760553] 1fa0:                                     b0745008 00000000 0088b000 b0efb000\r\n[ 5259.760563] 1fc0: 7f5b4d70 ffffffff 7f5b4d70 b6fc6eb8 7f5b4cb8 00000000 beffcda0 b6efd928\r\n[ 5259.760571] 1fe0: 00000000 beffcd18 b6ef43e0 b6d6fb88 20000010 ffffffff\r\n[ 5259.760582] Code: e7945008 e1550003 0a000002 e1a00005 (e5951048) \r\n[ 5259.760621] ---[ end trace 58e3248830d2802d ]---\r\n[ 5259.853561] systemd-journald[14179]: File /run/log/journal/4e24bd32ade844409612a9d6bbc40e5d/system.journal corrupted or uncleanly shut down, renaming and replacing.\r\n[ 5259.996657] systemd-journald[14179]: Received request to flush runtime journal from PID 1\r\n[ 5344.599944] Unable to handle kernel NULL pointer dereference at virtual address 00000048\r\n[ 5344.599956] pgd = c5e90000\r\n[ 5344.599963] [00000048] *pgd=3cec9831, *pte=00000000, *ppte=00000000\r\n[ 5344.599983] Internal error: Oops: 17 [#3] SMP ARM\r\n[ 5344.599990] Modules linked in: xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_raw iptable_filter ip_tables x_tables cmac ecb snd_soc_snow snd_soc_core snd_compress snd_pcm_dmaengine snd_pcm snd_timer snd soundcore uvcvideo videobuf2_vmalloc videobuf2_memops btmrvl_sdio mwifiex_sdio btmrvl videobuf2_core mwifiex v4l2_common videodev bluetooth cfg80211 media s5p_sss zfs(PO) zunicode(PO) zavl(PO) zcommon(PO) znvpair(PO) spl(O) zlib_deflate ipv6\r\n[ 5344.600201] CPU: 1 PID: 14203 Comm: as Tainted: P      D    O    4.3.0-1.el7.armv5tel #1\r\n[ 5344.600208] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)\r\n[ 5344.600216] task: d0e91400 ti: c5e54000 task.ti: c5e54000\r\n[ 5344.600526] PC is at arc_kmem_reap_now+0x64/0xec [zfs]\r\n[ 5344.600537] LR is at __wake_up_bit+0x20/0x54\r\n[ 5344.600545] pc : [<bf114d3c>]    lr : [<c0054b40>]    psr: 00000113\r\nsp : c5e55c08  ip : c5e55bc8  fp : 0000008a\r\n[ 5344.600553] r10: 00001fe9  r9 : bf302b08  r8 : bf2e2b08\r\n[ 5344.600560] r7 : e04d0d00  r6 : e04d0d00  r5 : 00000000  r4 : 00007000\r\n[ 5344.600566] r3 : e04d0b00  r2 : 00000000  r1 : 00000000  r0 : 00000000\r\n[ 5344.600575] Flags: nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none\r\n[ 5344.600583] Control: 10c5387d  Table: 25e9006a  DAC: 00000051\r\n[ 5344.600590] Process as (pid: 14203, stack limit = 0xc5e54210)\r\n[ 5344.600597] Stack: (0xc5e55c08 to 0xc5e56000)\r\n[ 5344.600607] 5c00:                   ffffffff 00007fa5 00000000 c5e55c70 bf26ea80 00000000\r\n[ 5344.600616] 5c20: c066240c bf11afbc 00000000 bf1edad0 00007fa5 00000080 00000000 c00add48\r\n[ 5344.600627] 5c40: c5e55c94 c5e55c90 00000000 00000080 0000001a 00000000 00000000 00000000\r\n[ 5344.600639] 5c60: 0000006c 000200da 00000000 00010142 000200da 00000080 00000000 00000000\r\n[ 5344.600650] 5c80: c0697500 c0697500 c5e55d74 00000005 c0697810 00000000 00000004 00000000\r\n[ 5344.600661] 5ca0: 00000010 c00afcc0 004bc3a0 00000000 00000000 00000000 004bc3a0 00010142\r\n[ 5344.600671] 5cc0: 00000000 c5e55df8 00000000 00000002 00000000 c5e54000 00000020 00000001\r\n[ 5344.600682] 5ce0: 00000000 00000000 00000000 00000000 e135e02c 00000000 00000000 0000000f\r\n[ 5344.600694] 5d00: 00000010 e135e02c c5e55d08 c5e55d08 c5e55d10 c5e55d10 c5e55d18 c5e55d18\r\n[ 5344.600706] 5d20: e135b190 c0697500 c0697d84 c0662420 0000000e 00000000 00000002 00000001\r\n[ 5344.600717] 5d40: 00000000 c00b0254 000002dc c00a721c 000000c0 000200da c0697d80 0000000c\r\n[ 5344.600727] 5d60: c0697d94 00000000 00000001 00000002 60000113 00000020 000200da 00000000\r\n[ 5344.600736] 5d80: 00000000 00000000 0000000b 00000007 0000001b 00000005 e135b140 000200da\r\n[ 5344.600744] 5da0: c5e54000 000000c0 00000000 00000000 00000001 00000000 00000000 c00a7918\r\n[ 5344.600753] 5dc0: 00000000 c5e55df4 c5e55df3 c5e55dc8 00000000 00000040 00000000 00000050\r\n[ 5344.600763] 5de0: 000000c0 00000000 00000010 00000002 006d3480 00000000 00001558 c042b8ec\r\n[ 5344.600771] 5e00: 00000000 c00bd98c c0697d80 00000000 c0697500 00000001 00000002 00000002\r\n[ 5344.600780] 5e20: c549f000 c6206948 007f4000 00000000 c549f7d0 c5e90000 00000000 e0e36840\r\n[ 5344.600789] 5e40: c549f000 c00c0ebc c5e55e80 e0559800 e0e1b210 c006b67c 565723dc 3a501850\r\n[ 5344.600798] 5e60: 00000003 00000055 000001f4 000007d0 c5e90018 c00f3388 dafe67d0 d9603600\r\n[ 5344.600806] 5e80: e0e1b210 00001000 00000000 00000000 dafe67d0 c00f4b28 565723dc c5e55fb0\r\n[ 5344.600815] 5ea0: 007f4474 00000055 d0e91400 e0e36840 00000817 e0e36884 c6206948 c001a184\r\n[ 5344.600823] 5ec0: 00000001 00000007 c0437e80 c5e55f0c 00000000 00000000 007f348c 00000000\r\n[ 5344.600832] 5ee0: 00000800 00000000 0009a5e4 00000817 007f4474 c066cde4 c5e55fb0 10c5387d\r\n[ 5344.600841] 5f00: 00002710 007f4470 b6e654fc c00092b8 00000000 00000000 c5e55f0c 00000001\r\n[ 5344.600849] 5f20: d0bce500 00000000 00000000 00000000 00000000 d0bce500 00001000 d0bce508\r\n[ 5344.600857] 5f40: 00000001 dafe67d0 00000000 00000000 0009a5e4 c00de270 00000000 00000000\r\n[ 5344.600866] 5f60: 00001000 00000000 00000000 d0bce500 d0bce500 00001000 0009a5e4 c00de9ac\r\n[ 5344.600875] 5f80: 00000000 00000000 00001000 00000000 ffffffff ffffffff 00000003 b6d8ff10\r\n[ 5344.600883] 5fa0: 60000010 ffffffff 10c5387d c00132fc 00000fe9 00000fe9 00000000 00001b91\r\n[ 5344.600893] 5fc0: 00000001 007f3490 b6e654cc 007f3488 007838e8 00002710 007f4470 b6e654fc\r\n[ 5344.600901] 5fe0: 00000062 bec8f038 b6d91f0c b6d8ff10 60000010 ffffffff 00000000 00000000\r\n[ 5344.601070] [<bf114d3c>] (arc_kmem_reap_now [zfs]) from [<bf11afbc>] (arc_shrinker_func_scan_objects+0xb8/0x1ac [zfs])\r\n[ 5344.601144] [<bf11afbc>] (arc_shrinker_func_scan_objects [zfs]) from [<c00add48>] (shrink_slab.part.0.constprop.8+0x1b0/0x260)\r\n[ 5344.601157] [<c00add48>] (shrink_slab.part.0.constprop.8) from [<c00afcc0>] (shrink_zone+0x5e4/0x6e4)\r\n[ 5344.601167] [<c00afcc0>] (shrink_zone) from [<c00b0254>] (try_to_free_pages+0x494/0x55c)\r\n[ 5344.601184] [<c00b0254>] (try_to_free_pages) from [<c00a7918>] (__alloc_pages_nodemask+0x28c/0x74c)\r\n[ 5344.601200] [<c00a7918>] (__alloc_pages_nodemask) from [<c00c0ebc>] (handle_mm_fault+0x208/0xc7c)\r\n[ 5344.601218] [<c00c0ebc>] (handle_mm_fault) from [<c001a184>] (do_page_fault+0x12c/0x32c)\r\n[ 5344.601230] [<c001a184>] (do_page_fault) from [<c00092b8>] (do_DataAbort+0x34/0xb4)\r\n[ 5344.601241] [<c00092b8>] (do_DataAbort) from [<c00132fc>] (__dabt_usr+0x3c/0x40)\r\n[ 5344.601247] Exception stack(0xc5e55fb0 to 0xc5e55ff8)\r\n[ 5344.601256] 5fa0:                                     00000fe9 00000fe9 00000000 00001b91\r\n[ 5344.601264] 5fc0: 00000001 007f3490 b6e654cc 007f3488 007838e8 00002710 007f4470 b6e654fc\r\n[ 5344.601272] 5fe0: 00000062 bec8f038 b6d91f0c b6d8ff10 60000010 ffffffff\r\n[ 5344.601282] Code: e7945008 e1550003 0a000002 e1a00005 (e5951048) \r\n[ 5344.601293] ---[ end trace 58e3248830d2802e ]---\r\n[ 6350.895147] Unable to handle kernel NULL pointer dereference at virtual address 00000048\r\n[ 6350.895158] pgd = c8cec000\r\n[ 6350.895165] [00000048] *pgd=29a84831, *pte=00000000, *ppte=00000000\r\n[ 6350.895183] Internal error: Oops: 17 [#4] SMP ARM\r\n[ 6350.895190] Modules linked in: xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_raw iptable_filter ip_tables x_tables cmac ecb snd_soc_snow snd_soc_core snd_compress snd_pcm_dmaengine snd_pcm snd_timer snd soundcore uvcvideo videobuf2_vmalloc videobuf2_memops btmrvl_sdio mwifiex_sdio btmrvl videobuf2_core mwifiex v4l2_common videodev bluetooth cfg80211 media s5p_sss zfs(PO) zunicode(PO) zavl(PO) zcommon(PO) znvpair(PO) spl(O) zlib_deflate ipv6\r\n[ 6350.895370] CPU: 3 PID: 8548 Comm: bash Tainted: P      D    O    4.3.0-1.el7.armv5tel #1\r\n[ 6350.895377] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)\r\n[ 6350.895384] task: e063a300 ti: c8810000 task.ti: c8810000\r\n[ 6350.895672] PC is at arc_kmem_reap_now+0x64/0xec [zfs]\r\n[ 6350.895682] LR is at __wake_up_bit+0x20/0x54\r\n[ 6350.895690] pc : [<bf114d3c>]    lr : [<c0054b40>]    psr: 00000013\r\nsp : c8811e00  ip : c8811dc0  fp : 0000fe4a\r\n[ 6350.895697] r10: 00001fce  r9 : bf302b08  r8 : bf2e2b08\r\n[ 6350.895704] r7 : e04d0d00  r6 : e04d0d00  r5 : 00000000  r4 : 00007000\r\n[ 6350.895710] r3 : e04d0b00  r2 : 00000000  r1 : 00000000  r0 : 00000000\r\n[ 6350.895717] Flags: nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none\r\n[ 6350.895724] Control: 10c5387d  Table: 28cec06a  DAC: 00000051\r\n[ 6350.895730] Process bash (pid: 8548, stack limit = 0xc8810210)\r\n[ 6350.895737] Stack: (0xc8811e00 to 0xc8812000)\r\n[ 6350.895745] 1e00: ffffffff 00007f39 00000000 c8811e68 bf26ea80 00016b5d c066240c bf11afbc\r\n[ 6350.895754] 1e20: 00000000 bf1edad0 00007f39 00000080 00016b5d c00add48 e2aa4d80 e294eec0\r\n[ 6350.895761] 1e40: 00000000 00000080 0000fe30 00000000 e0144400 00000000 00000fa0 000000d0\r\n[ 6350.895769] 1e60: 00000000 000003e8 000000d0 00000080 00000000 00000000 e0144044 00000000\r\n[ 6350.895777] 1e80: c066e63c 00000001 b6f0f000 c8811f80 00000002 00000002 00000000 c00adee8\r\n[ 6350.895785] 1ea0: c06da5a8 c0121acc c8811f80 00000001 e0c1a000 c012db00 c8811f80 b6f0f000\r\n[ 6350.895793] 1ec0: 00000002 00000002 c012db1c b6f0f000 d680ba00 c8811f80 00000002 b6f0f000\r\n[ 6350.895801] 1ee0: 00000000 c012db2c 00000001 b6f0f000 00000002 c00ddc38 c8811fb0 10c5387d\r\n[ 6350.895808] 1f00: 00000000 00000000 bebc8a2c c000936c 00000000 c8811f18 00000000 0000000a\r\n[ 6350.895816] 1f20: bebc8a2c c00f5e8c 00000001 d680ba00 c8811f80 00000002 00000000 c00585a8\r\n[ 6350.895824] 1f40: d680ba00 b6f0f000 c8811f80 00000002 00000002 c00de33c d680ba00 b6f0f000\r\n[ 6350.895832] 1f60: 00000002 00000000 00000000 d680ba00 d680ba00 00000002 b6f0f000 c00dea28\r\n[ 6350.895839] 1f80: 00000002 00000000 00000002 00000002 b6f0f000 b6e74b38 00000004 c000ef04\r\n[ 6350.895847] 1fa0: c8810000 c000ed40 00000002 b6f0f000 00000001 b6f0f000 00000002 00000000\r\n[ 6350.895855] 1fc0: 00000002 b6f0f000 b6e74b38 00000004 00000002 00000002 b6f0f000 00000000\r\n[ 6350.895863] 1fe0: 00000000 bebc894c b6d96068 b6df6b8c 60000010 00000001 00021036 01e0fa8d\r\n[ 6350.895992] [<bf114d3c>] (arc_kmem_reap_now [zfs]) from [<bf11afbc>] (arc_shrinker_func_scan_objects+0xb8/0x1ac [zfs])\r\n[ 6350.896059] [<bf11afbc>] (arc_shrinker_func_scan_objects [zfs]) from [<c00add48>] (shrink_slab.part.0.constprop.8+0x1b0/0x260)\r\n[ 6350.896071] [<c00add48>] (shrink_slab.part.0.constprop.8) from [<c00adee8>] (drop_slab_node+0x1c/0x28)\r\n[ 6350.896082] [<c00adee8>] (drop_slab_node) from [<c0121acc>] (drop_caches_sysctl_handler+0x74/0xfc)\r\n[ 6350.896092] [<c0121acc>] (drop_caches_sysctl_handler) from [<c012db00>] (proc_sys_call_handler+0x9c/0xb8)\r\n[ 6350.896101] [<c012db00>] (proc_sys_call_handler) from [<c012db2c>] (proc_sys_write+0x10/0x18)\r\n[ 6350.896112] [<c012db2c>] (proc_sys_write) from [<c00ddc38>] (__vfs_write+0x28/0xd0)\r\n[ 6350.896121] [<c00ddc38>] (__vfs_write) from [<c00de33c>] (vfs_write+0xa4/0x148)\r\n[ 6350.896130] [<c00de33c>] (vfs_write) from [<c00dea28>] (SyS_write+0x3c/0x7c)\r\n[ 6350.896144] [<c00dea28>] (SyS_write) from [<c000ed40>] (ret_fast_syscall+0x0/0x3c)\r\n[ 6350.896153] Code: e7945008 e1550003 0a000002 e1a00005 (e5951048) \r\n[ 6350.896162] ---[ end trace 58e3248830d2802f ]---\r\n[ 6372.937607] Unable to handle kernel NULL pointer dereference at virtual address 00000048\r\n[ 6372.937619] pgd = db564000\r\n[ 6372.937626] [00000048] *pgd=3c57a831, *pte=00000000, *ppte=00000000\r\n[ 6372.937646] Internal error: Oops: 17 [#5] SMP ARM\r\n[ 6372.937653] Modules linked in: xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_raw iptable_filter ip_tables x_tables cmac ecb snd_soc_snow snd_soc_core snd_compress snd_pcm_dmaengine snd_pcm snd_timer snd soundcore uvcvideo videobuf2_vmalloc videobuf2_memops btmrvl_sdio mwifiex_sdio btmrvl videobuf2_core mwifiex v4l2_common videodev bluetooth cfg80211 media s5p_sss zfs(PO) zunicode(PO) zavl(PO) zcommon(PO) znvpair(PO) spl(O) zlib_deflate ipv6\r\n[ 6372.937866] CPU: 0 PID: 14927 Comm: bash Tainted: P      D    O    4.3.0-1.el7.armv5tel #1\r\n[ 6372.937873] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)\r\n[ 6372.937880] task: de099e00 ti: c6db0000 task.ti: c6db0000\r\n[ 6372.938195] PC is at arc_kmem_reap_now+0x64/0xec [zfs]\r\n[ 6372.938205] LR is at __wake_up_bit+0x20/0x54\r\n[ 6372.938212] pc : [<bf114d3c>]    lr : [<c0054b40>]    psr: 00000013\r\nsp : c6db1e00  ip : c6db1dc0  fp : 000118a0\r\n[ 6372.938219] r10: 00002314  r9 : bf302b08  r8 : bf2e2b08\r\n[ 6372.938226] r7 : e04d0d00  r6 : e04d0d00  r5 : 00000000  r4 : 00007000\r\n[ 6372.938232] r3 : e04d0b00  r2 : 00000000  r1 : 00000000  r0 : 00000000\r\n[ 6372.938239] Flags: nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none\r\n[ 6372.938245] Control: 10c5387d  Table: 3b56406a  DAC: 00000051\r\n[ 6372.938252] Process bash (pid: 14927, stack limit = 0xc6db0210)\r\n[ 6372.938258] Stack: (0xc6db1e00 to 0xc6db2000)\r\n[ 6372.938267] 1e00: ffffffff 00008c50 00000000 c6db1e68 bf26ea80 000000ec c066240c bf11afbc\r\n[ 6372.938275] 1e20: 00000000 bf1edad0 00008c50 00000080 000000ec c00add48 e2aa4d80 e294eec0\r\n[ 6372.938283] 1e40: 00000000 00000080 00011858 00000000 e0144400 00000000 00000fa0 000000d0\r\n[ 6372.938291] 1e60: 00000000 000003e8 000000d0 00000080 00000000 00000000 e0144044 00000000\r\n[ 6372.938299] 1e80: c066e63c 00000001 b6ff7000 c6db1f80 00000002 00000002 00000000 c00adee8\r\n[ 6372.938307] 1ea0: c06da5a8 c0121acc c6db1f80 00000001 e0c1a000 c012db00 c6db1f80 b6ff7000\r\n[ 6372.938315] 1ec0: 00000002 00000002 c012db1c b6ff7000 d0457800 c6db1f80 00000002 b6ff7000\r\n[ 6372.938322] 1ee0: 00000000 c012db2c 00000001 b6ff7000 00000002 c00ddc38 c4abaf60 00000301\r\n[ 6372.938330] 1f00: 00000000 000001bc 00000000 00000000 00000000 c6db1f18 00000000 0000000a\r\n[ 6372.938338] 1f20: be81aa2c c00f5e8c 00000001 d0457800 c6db1f80 00000002 00000000 c00585a8\r\n[ 6372.938346] 1f40: d0457800 b6ff7000 c6db1f80 00000002 00000002 c00de33c d0457800 b6ff7000\r\n[ 6372.938353] 1f60: 00000002 00000000 00000000 d0457800 d0457800 00000002 b6ff7000 c00dea28\r\n[ 6372.938361] 1f80: 00000002 00000000 00000002 00000002 b6ff7000 b6f5bb38 00000004 c000ef04\r\n[ 6372.938369] 1fa0: c6db0000 c000ed40 00000002 b6ff7000 00000001 b6ff7000 00000002 00000000\r\n[ 6372.938376] 1fc0: 00000002 b6ff7000 b6f5bb38 00000004 00000002 00000002 b6ff7000 00000000\r\n[ 6372.938384] 1fe0: 00000000 be81a94c b6e7d068 b6eddb8c 60000010 00000001 00021236 01e15ef3\r\n[ 6372.938507] [<bf114d3c>] (arc_kmem_reap_now [zfs]) from [<bf11afbc>] (arc_shrinker_func_scan_objects+0xb8/0x1ac [zfs])\r\n[ 6372.938575] [<bf11afbc>] (arc_shrinker_func_scan_objects [zfs]) from [<c00add48>] (shrink_slab.part.0.constprop.8+0x1b0/0x260)\r\n[ 6372.938586] [<c00add48>] (shrink_slab.part.0.constprop.8) from [<c00adee8>] (drop_slab_node+0x1c/0x28)\r\n[ 6372.938597] [<c00adee8>] (drop_slab_node) from [<c0121acc>] (drop_caches_sysctl_handler+0x74/0xfc)\r\n[ 6372.938608] [<c0121acc>] (drop_caches_sysctl_handler) from [<c012db00>] (proc_sys_call_handler+0x9c/0xb8)\r\n[ 6372.938617] [<c012db00>] (proc_sys_call_handler) from [<c012db2c>] (proc_sys_write+0x10/0x18)\r\n[ 6372.938628] [<c012db2c>] (proc_sys_write) from [<c00ddc38>] (__vfs_write+0x28/0xd0)\r\n[ 6372.938637] [<c00ddc38>] (__vfs_write) from [<c00de33c>] (vfs_write+0xa4/0x148)\r\n[ 6372.938646] [<c00de33c>] (vfs_write) from [<c00dea28>] (SyS_write+0x3c/0x7c)\r\n[ 6372.938659] [<c00dea28>] (SyS_write) from [<c000ed40>] (ret_fast_syscall+0x0/0x3c)\r\n[ 6372.938669] Code: e7945008 e1550003 0a000002 e1a00005 (e5951048) \r\n[ 6372.942198] ---[ end trace 58e3248830d28030 ]---\r\n\r\n\r\nThis is several Oopses that happened in quick succession. The machine is still running and remains responsive, but echo 3 > /proc/sys/vm/drop_caches now causes another Oops to happen every time it is run.\r\n\r\nThe ZFS/SPL is 0.6.5.3 with the patch for spl issue #2505 applied."},"comment":{"url":"https://api.github.com/repos/zfsonlinux/zfs/issues/comments/162702045","html_url":"https://github.com/zfsonlinux/zfs/issues/4048#issuecomment-162702045","issue_url":"https://api.github.com/repos/zfsonlinux/zfs/issues/4048","id":162702045,"user":{"login":"tuxoko","id":119672,"avatar_url":"https://avatars.githubusercontent.com/u/119672?v=3","gravatar_id":"","url":"https://api.github.com/users/tuxoko","html_url":"https://github.com/tuxoko","followers_url":"https://api.github.com/users/tuxoko/followers","following_url":"https://api.github.com/users/tuxoko/following{/other_user}","gists_url":"https://api.github.com/users/tuxoko/gists{/gist_id}","starred_url":"https://api.github.com/users/tuxoko/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/tuxoko/subscriptions","organizations_url":"https://api.github.com/users/tuxoko/orgs","repos_url":"https://api.github.com/users/tuxoko/repos","events_url":"https://api.github.com/users/tuxoko/events{/privacy}","received_events_url":"https://api.github.com/users/tuxoko/received_events","type":"User","site_admin":false},"created_at":"2015-12-07T23:16:21Z","updated_at":"2015-12-07T23:16:21Z","body":"@gordan-bobic \r\nOn my ubuntu, there's a ```build``` besides ```source``` which contains a copy of the source."}}