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IDProjectCategoryView StatusLast Update
0016749CentOS-7kernelpublic2020-02-10 03:51
Status newResolutionopen 
PlatformDell Dimension 2.8GHz P4HT 4GBOSCentosOS Version7.7
Product Version7.7-1908 
Target VersionFixed in Version 
Summary0016749: BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
DescriptionGnome desktop performing a gui Bacula Differential backup to an external e-sata drive. Running one terminal login, Firefox open minimized, and Evolution mail open normal. Suddenly, the system clock seconds stopped. The screen went to console, an approximately 4 by 4 inch color checkerboard appeared just down from the top left corner where some "crash" type messages were written, about 4 or 5 more "crash" type messages overwrote the checkerboard, the screen went blank and the system rebooted normally.
Steps To ReproduceNot really sure I can. This happened before when I had a tainted prior kernel from out-of-tree, unsigned modules which I have since resolved.
Additional Information No crashes happened with my Centos 6 installation. Please advise as to what additional information is necessary.
Tagskernel bug




2019-11-19 00:52


abrt-cli-error (4,831 bytes)
# abrt-cli list --detailed
id 70511f621767708e67859ca7c6a866cd2027a3ae
reason:         BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
time:           Mon 18 Nov 2019 04:10:04 PM EST
uid:            0 (root)
count:          1
Directory:      /var/tmp/abrt/vmcore-
analyzer:       vmcore
architecture:   x86_64
component:      kernel
hostname:       centos.14wendy.home
kernel:         3.10.0-1062.4.3.el7.x86_64
last_occurrence: 1574111404
os_release:     CentOS Linux release 7.7.1908 (Core)
runlevel:       N 5
type:           vmcore
username:       root
uuid:           1c7ef6432382a11e66182641ce02edef6fd7a273

vmcore:         Binary file, 159628301 bytes
vmcore-dmesg.txt: Text file, 65157 bytes

:BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
:IP: [<ffffffffc04955bb>] xfs_free_eofblocks+0x5b/0x1f0 [xfs]
:PGD 0 
:Oops: 0000 [#1] SMP 
:Modules linked in: fuse tun nf_nat_tftp nf_conntrack_tftp nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat iptable_mangle iptable_security iptable_raw nf_conntrack ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter sunrpc ext4 mbcache jbd2 snd_hda_codec_idt snd_hda_codec_generic iTCO_wdt ppdev gpio_ich iTCO_vendor_support dcdbas snd_hda_intel snd_hda_codec snd_hda_core intel_powerclamp snd_hwdep snd_seq pcspkr i2c_i801 snd_seq_device snd_pcm sg lpc_ich parport_pc snd_timer
: snd parport soundcore binfmt_misc sch_fq_codel ip_tables xfs libcrc32c sd_mod sr_mod cdrom crc_t10dif crct10dif_generic crct10dif_common ata_generic pata_acpi i915 i2c_algo_bit video iosf_mbi drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ahci drm ata_piix libahci libata r8169 serio_raw realtek drm_panel_orientation_quirks dm_mirror dm_region_hash dm_log dm_mod
:CPU: 1 PID: 33 Comm: kswapd0 Kdump: loaded Not tainted 3.10.0-1062.4.3.el7.x86_64 #1
:Hardware name: Dell Inc.                 Dell DV051                   /0WJ770, BIOS A03 10/08/2005
:task: ffff88433f3fe2a0 ti: ffff88433782c000 task.ti: ffff88433782c000
:RIP: 0010:[<ffffffffc04955bb>]  [<ffffffffc04955bb>] xfs_free_eofblocks+0x5b/0x1f0 [xfs]
:RSP: 0018:ffff88433782fb00  EFLAGS: 00010216
:RAX: 0000000000000000 RBX: ffff88428fffe000 RCX: 0000000000000000
:RDX: 00000000e600ed58 RSI: 0000000000000001 RDI: ffff88428fffe000
:RBP: ffff88433782fb58 R08: c018000000000000 R09: 428fffe1e00c0000
:R10: ffff8842854c78c0 R11: 0000000000000004 R12: 00000000e600f530
:R13: ffff884300000000 R14: ffff88428fe28638 R15: ffff884336a78908
:FS:  0000000000000000(0000) GS:ffff88433f240000(0000) knlGS:0000000000000000
:CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
:CR2: 0000000000000020 CR3: 0000000094bb8000 CR4: 00000000000007e0
:Call Trace:
: [<ffffffffa24931f3>] ? fsnotify_grab_connector+0x43/0x70
: [<ffffffffc04ad646>] xfs_inactive+0xe6/0x130 [xfs]
: [<ffffffffc04b4525>] xfs_fs_destroy_inode+0x95/0x190 [xfs]
: [<ffffffffa2467bdb>] destroy_inode+0x3b/0x60
: [<ffffffffa2467d15>] evict+0x115/0x180
: [<ffffffffa2467dbe>] dispose_list+0x3e/0x50
: [<ffffffffa2468e1c>] prune_icache_sb+0x17c/0x330
: [<ffffffffa244cb6e>] prune_super+0xce/0x1a0
: [<ffffffffa23d0e05>] shrink_slab+0x175/0x340
: [<ffffffffa243fa81>] ? vmpressure+0x61/0x90
: [<ffffffffa23d4b38>] balance_pgdat+0x3a8/0x5e0
: [<ffffffffa23d4ee3>] kswapd+0x173/0x440
: [<ffffffffa22c72e0>] ? wake_up_atomic_t+0x30/0x30
: [<ffffffffa23d4d70>] ? balance_pgdat+0x5e0/0x5e0
: [<ffffffffa22c61f1>] kthread+0xd1/0xe0
: [<ffffffffa22c6120>] ? insert_kthread_work+0x40/0x40
: [<ffffffffa298cd37>] ret_from_fork_nospec_begin+0x21/0x21
: [<ffffffffa22c6120>] ? insert_kthread_work+0x40/0x40
:Code: 66 25 00 f0 66 3d 00 80 0f 84 5a 01 00 00 4c 8b a7 08 01 00 00 41 8b 95 58 02 00 00 49 8b 45 00 41 0f b6 8d 90 00 00 00 49 01 d4 <48> 03 50 20 49 d3 ec 48 d3 ea 49 39 d4 72 26 31 c0 48 8b 75 d8 
:RIP  [<ffffffffc04955bb>] xfs_free_eofblocks+0x5b/0x1f0 [xfs]
: RSP <ffff88433782fb00>


:NAME="CentOS Linux"
:VERSION="7 (Core)"
:ID_LIKE="rhel fedora"
:PRETTY_NAME="CentOS Linux 7 (Core)"
abrt-cli-error (4,831 bytes)


2020-02-10 03:51

reporter   ~0036240

you should give the log and vmcore backtrace at least

Issue History

Date Modified Username Field Change
2019-11-19 00:52 halcaldwell1 New Issue
2019-11-19 00:52 halcaldwell1 File Added: abrt-cli-error
2019-11-19 00:57 halcaldwell1 Tag Attached: kernel bug
2020-02-10 03:51 nobody_caq8 Note Added: 0036240