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Re: NULL pointer dereference

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On 2020-12-19 08:13, Grzesiek Sójka wrote:
> Hi there,
> 
> I found the following in my "server" log:
> 
> ==============================================
> 
> BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
> PGD 0 P4D 0
> Oops: 0000 [#2] SMP PTI
> CPU: 5 PID: 12441 Comm: awk Tainted: G      D           4.19.0-13-amd64 
> #1 Debian 4.19.160-2
> Hardware name: FUJITSU D3162-B1/D3162-B1, BIOS V4.6.5.3 R1.23.0 for 
> D3162-B1x 12/01/2014
> RIP: 0010:unmap_page_range+0x561/0xa60
> Code: 80 00 00 00 01 e8 4f 2b 01 00 49 8b 07 f6 c4 80 0f 84 0e 03 00 00 
> 4c 89 ff e8 6b 91 fe ff 85 c0 0f 88 e6 02 00 00 49 8b 46 28 <8b> 50 08 
> 8d 4a 01 89 48 08 4c 89 7c d0 10 3b 48 0c 0f 84 d2 00 00
> RSP: 0018:ffff9c3a49167cd0 EFLAGS: 00010206
> RAX: 0000000000000000 RBX: ffff8e2f47a83a10 RCX: 0000000000000001
> RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8e2f7dd20000
> RBP: 00007faa2ed43000 R08: 0000000000000000 R09: ffff8e2ef8ae1c70
> R10: ffff8e2f9e5df000 R11: 0000000000000000 R12: 00007faa2ed42000
> R13: 000000014fd44025 R14: ffff9c3a49167dd0 R15: ffffd073853f5100
> FS:  0000000000000000(0000) GS:ffff8e2f7e140000(0000) 
> knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000000000000008 CR3: 000000015020a003 CR4: 00000000000606e0
> Call Trace:
>   unmap_vmas+0x7f/0xb0
>   exit_mmap+0xaa/0x180
>   mmput+0x54/0x130
>   do_exit+0x33f/0xbb0
>   ? handle_mm_fault+0xd6/0x200
>   do_group_exit+0x3a/0xa0
>   __x64_sys_exit_group+0x14/0x20
>   do_syscall_64+0x53/0x110
>   entry_SYSCALL_64_after_hwframe+0x44/0xa9
> RIP: 0033:0x7faa2eaa99d6
> Code: Bad RIP value.
> RSP: 002b:00007ffd860931d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007faa2eb9a760 RCX: 00007faa2eaa99d6
> RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
> RBP: 0000000000000000 R08: 00000000000000e7 R09: ffffffffffffff80
> R10: 00007ffd86093096 R11: 0000000000000246 R12: 00007faa2eb9a760
> R13: 0000000000000001 R14: 00007faa2eba3428 R15: 0000000000000000
> Modules linked in: ppp_deflate cfg80211 rfkill 8021q garp stp mrp llc 
> ppp_async crc_ccitt ppp_generic slhc nfsd auth_rpcgss nfs_acl lockd 
> grace sunrpc xt_nat nft_chain_nat_ipv4 nf_nat_ipv4 nf_nat nf_conntrack 
> nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ipt_REJECT nf_reject_ipv4 
> nft_limit xt_limit xt_tcpudp nft_compat x_tables nft_counter nf_tables 
> nfnetlink binfmt_misc bonding sch5636 sch56xx_common rc_it913x_v1 it913x 
> af9033 dvb_usb_af9035 dvb_usb_v2 dvb_core rc_core snd_hda_codec_hdmi 
> snd_hda_codec_conexant snd_hda_codec_generic intel_rapl i915 
> x86_pkg_temp_thermal snd_hda_intel intel_powerclamp snd_hda_codec 
> coretemp snd_hda_core snd_hwdep snd_pcm xhci_pci ehci_pci ahci snd_timer 
> xhci_hcd drm_kms_helper ehci_hcd libahci kvm snd mei_wdt tg3 iTCO_wdt 
> irqbypass mei_me e1000e drm libata usbcore
>   iTCO_vendor_support soundcore lpc_ich libphy mei i2c_algo_bit 
> usb_common mfd_core crct10dif_pclmul crc32_pclmul ppdev 
> ghash_clmulni_intel sg i2c_i801 intel_cstate evdev intel_uncore 
> pcc_cpufreq video parport_pc button intel_rapl_perf pcspkr parport ext4 
> crc16 mbcache jbd2 crc32c_generic fscrypto ecb sd_mod crc32c_intel 
> aacraid aesni_intel aes_x86_64 crypto_simd scsi_mod cryptd glue_helper 
> thermal fan
> CR2: 0000000000000008
> ---[ end trace 1f0672175c6e1ff0 ]---
> RIP: 0010:unmap_page_range+0x55d/0xa60
> Code: ff 83 ac 84 80 00 00 00 01 e8 4f 2b 01 00 49 8b 07 f6 c4 80 0f 84 
> 0e 03 00 00 4c 89 ff e8 6b 91 fe ff 85 c0 0f 88 e6 02 00 00 <49> 8b 46 
> 28 8b 50 08 8d 4a 01 89 48 08 4c 89 7c d0 10 3b 48 0c 0f
> RSP: 0018:ffff9c3a43a67cd0 EFLAGS: 00010202
> RAX: 0000000000000004 RBX: ffff8e2f47a0deb0 RCX: 0000000000000001
> RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8e2f7dd20000
> RBP: 00007f9f121d7000 R08: 0000000000000000 R09: ffff8e2f6a6e09c0
> R10: ffff8e2f9e5df000 R11: 0000000000000000 R12: 00007f9f121d6000
> R13: 000000081e49f025 R14: ffff9c3a43a67dd0 R15: ffffd073a07927c0
> FS:  0000000000000000(0000) GS:ffff8e2f7e140000(0000) 
> knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007faa2eaa99ac CR3: 000000015020a003 CR4: 00000000000606e0
> Fixing recursive fault but reboot is needed!
> 
> ============================================
> 
> This is not the first time, so I suspect a persistent problem. I have no 
> idea how to look for the solution. Any suggestions??
> Just in case:
> 
> ============================================
> 
> # lspci
> 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor 
> Family DRAM Controller (rev 09)
> 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core 
> Processor Family PCI Express Root Port (rev 09)
> 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core 
> Processor Family Integrated Graphics Controller (rev 09)
> 00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset 
> Family USB xHCI Host Controller (rev 04)
> 00:16.0 Communication controller: Intel Corporation 7 Series/C216 
> Chipset Family MEI Controller #1 (rev 04)
> 00:16.3 Serial controller: Intel Corporation 7 Series/C210 Series 
> Chipset Family KT Controller (rev 04)
> 00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network 
> Connection (rev 04)
> 00:1a.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family 
> USB Enhanced Host Controller #2 (rev 04)
> 00:1b.0 Audio device: Intel Corporation 7 Series/C216 Chipset Family 
> High Definition Audio Controller (rev 04)
> 00:1c.0 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI 
> Express Root Port 1 (rev c4)
> 00:1d.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family 
> USB Enhanced Host Controller #1 (rev 04)
> 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a4)
> 00:1f.0 ISA bridge: Intel Corporation Q77 Express Chipset LPC Controller 
> (rev 04)
> 00:1f.2 SATA controller: Intel Corporation 7 Series/C210 Series Chipset 
> Family 6-port SATA Controller [AHCI mode] (rev 04)
> 00:1f.3 SMBus: Intel Corporation 7 Series/C216 Chipset Family SMBus 
> Controller (rev 04)
> 00:1f.6 Signal processing controller: Intel Corporation 7 Series/C210 
> Series Chipset Family Thermal Management Controller (rev 04)
> 01:00.0 RAID bus controller: Adaptec Series 7 6G SAS/PCIe 3 (rev 01)
> 02:00.0 Ethernet controller: Broadcom Limited NetXtreme BCM5719 Gigabit 
> Ethernet PCIe (rev 01)
> 02:00.1 Ethernet controller: Broadcom Limited NetXtreme BCM5719 Gigabit 
> Ethernet PCIe (rev 01)
> 02:00.2 Ethernet controller: Broadcom Limited NetXtreme BCM5719 Gigabit 
> Ethernet PCIe (rev 01)
> 02:00.3 Ethernet controller: Broadcom Limited NetXtreme BCM5719 Gigabit 
> Ethernet PCIe (rev 01)
> 

Which Debian?


Which kernel?


Did you follow the instructions and reboot?


David

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Thread

NULL pointer dereference Grzesiek Sójka <pld@sojka.co> - 2020-12-19 17:20 +0100
  Re: NULL pointer dereference David Christensen <dpchrist@holgerdanske.com> - 2020-12-19 20:50 +0100
    Re: NULL pointer dereference Grzesiek Sójka <pld@sojka.co> - 2020-12-19 21:10 +0100
  Re: NULL pointer dereference "Alexander V. Makartsev" <avbetev@gmail.com> - 2020-12-19 22:00 +0100
    Re: NULL pointer dereference Grzesiek Sójka <pld@sojka.co> - 2020-12-21 00:20 +0100
      Re: NULL pointer dereference "Thomas Schmitt" <scdbackup@gmx.net> - 2020-12-21 12:40 +0100
      Re: NULL pointer dereference "Alexander V. Makartsev" <avbetev@gmail.com> - 2020-12-21 14:10 +0100
  Re: NULL pointer dereference Marko Randjelovic <markoran@eunet.rs> - 2020-12-20 22:30 +0100
    Re: NULL pointer dereference Grzesiek Sójka <pld@sojka.co> - 2020-12-21 00:20 +0100
      Re: NULL pointer dereference deloptes <deloptes@gmail.com> - 2020-12-21 01:00 +0100

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