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Bug#939277: marked as done (BUG: unable to handle kernel NULL pointer dereference at 0000000000000048)

Your message dated Mon, 10 Feb 2025 17:53:06 +0100 (CET)
with message-id <20250210165306.2027DBE2EE7@eldamar.lan>
and subject line Closing this bug (BTS maintenance for src:linux bugs)
has caused the Debian Bug report #939277,
regarding BUG: unable to handle kernel NULL pointer dereference at 0000000000000048
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
939277: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=939277
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message ---

Package: kernel Version: 4.9.0-9-amd64

Sep 1 19:04:30 DebianHomeServer kernel: [11437.330427] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 Sep 1 19:04:30 DebianHomeServer kernel: [11437.330597] IP: [<ffffffffc06bec04>] ext4_file_open+0x24/0x280 [ext4] Sep 1 19:04:30 DebianHomeServer kernel: [11437.333407] PGD 0 Sep 1 19:04:30 DebianHomeServer kernel: [11437.333451] Sep 1 19:04:30 DebianHomeServer kernel: [11437.333553] Oops: 0002 [#808] SMP Sep 1 19:04:30 DebianHomeServer kernel: [11437.333615] Modules linked in: ipt_REJECT nf_reject_ipv4 xt_multiport iptable_filter edac_mce_amd edac_core snd_hda_codec_realtek kvm snd_hda_codec_hdmi joydev snd_hda_codec_generic evdev snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep irqbypass serio_raw snd_pcm pcspkr snd_timer k10temp snd sg soundcore shpchp wmi sp5100_tco button acpi_cpufreq nvidia_drm(PO) drm_kms_helper drm nvidia_modeset(PO) nvidia(PO) ipmi_msghandler it87 hwmon_vid ip_tables x_tables autofs4 ext4 crc16 jbd2 fscrypto ecb glue_helper lrw gf128mul ablk_helper cryptd aes_x86_64 mbcache raid10 raid1 raid0 multipath linear raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c crc32c_generic hid_generic usbhid hid md_mod sd_mod ohci_pci firewire_ohci ata_generic xhci_pci ehci_pci xhci_hcd ohci_hcd Sep 1 19:04:30 DebianHomeServer kernel: [11437.337130] ehci_hcd firewire_core crc_itu_t i2c_piix4 pata_atiixp usbcore usb_common r8169 mii ahci libahci pata_jmicron libata scsi_mod floppy Sep 1 19:04:30 DebianHomeServer kernel: [11437.337824] CPU: 2 PID: 16273 Comm: apache2 Tainted: P D O 4.9.0-9-amd64 #1 Debian 4.9.168-1+deb9u5 Sep 1 19:04:30 DebianHomeServer kernel: [11437.337911] Hardware name: Gigabyte Technology Co., Ltd. GA-890XA-UD3/GA-890XA-UD3, BIOS FA 04/13/2010 Sep 1 19:04:30 DebianHomeServer kernel: [11437.337996] task: ffff9debe5b30e40 task.stack: ffffb75800b84000 Sep 1 19:04:30 DebianHomeServer kernel: [11437.338062] RIP: 0010:[<ffffffffc06bec04>] [<ffffffffc06bec04>] ext4_file_open+0x24/0x280 [ext4] Sep 1 19:04:30 DebianHomeServer kernel: [11437.338219] RSP: 0018:ffffb75800b87dd0 EFLAGS: 00010206 Sep 1 19:04:30 DebianHomeServer kernel: [11437.338284] RAX: 0000000000000048 RBX: ffff9debea20cbc8 RCX: 000000009b45f3a4 Sep 1 19:04:30 DebianHomeServer kernel: [11437.338352] RDX: 39aa73a454b04281 RSI: 000000009b45f3a4 RDI: 0000000000000000 Sep 1 19:04:30 DebianHomeServer kernel: [11437.338421] RBP: ffffb75800b87e80 R08: 0000000000000000 R09: ffff9debea1b02d8 Sep 1 19:04:30 DebianHomeServer kernel: [11437.338489] R10: ffff9debe630e400 R11: 000000000000000c R12: ffff9debea20cbc8 Sep 1 19:04:30 DebianHomeServer kernel: [11437.338557] R13: ffffb75800b87ed0 R14: ffff9deb8aec9e80 R15: ffff9debc4830300 Sep 1 19:04:30 DebianHomeServer kernel: [11437.338627] FS: 00007fd7bc4f1040(0000) GS:ffff9debefc80000(0000) knlGS:0000000000000000 Sep 1 19:04:30 DebianHomeServer kernel: [11437.338710] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Sep 1 19:04:30 DebianHomeServer kernel: [11437.338776] CR2: 0000000000000048 CR3: 000000012353e000 CR4: 00000000000006f0 Sep 1 19:04:30 DebianHomeServer kernel: [11437.338843] Stack: Sep 1 19:04:30 DebianHomeServer kernel: [11437.338902] 8b2a0dff7c28f1f0 ffff9debeab0f000 00000000024000c0 ffff9debe295d400 Sep 1 19:04:30 DebianHomeServer kernel: [11437.339145] ffff9debea20cbc8 0002000000000000 0000000000000000 ffff9debc4830300 Sep 1 19:04:30 DebianHomeServer kernel: [11437.339386] ffff9debe61d5800 0000000000000000 8000000100000000 ffff9deb00000000 Sep 1 19:04:30 DebianHomeServer kernel: [11437.339627] Call Trace: Sep 1 19:04:30 DebianHomeServer kernel: [11437.339696] [<ffffffffa6e20b37>] ? iterate_dir+0x177/0x1a0 Sep 1 19:04:30 DebianHomeServer kernel: [11437.339765] [<ffffffffa6e21028>] ? SyS_getdents+0x98/0x120 Sep 1 19:04:30 DebianHomeServer kernel: [11437.339832] [<ffffffffa6e20d90>] ? fillonedir+0xe0/0xe0 Sep 1 19:04:30 DebianHomeServer kernel: [11437.339901] [<ffffffffa6c03b7d>] ? do_syscall_64+0x8d/0x100 Sep 1 19:04:30 DebianHomeServer kernel: [11437.339970] [<ffffffffa721b80e>] ? entry_SYSCALL_64_after_swapgs+0x58/0xc6 Sep 1 19:04:30 DebianHomeServer kernel: [11437.340038] Code: 1f 84 00 00 00 00 00 0f 1f 44 00 00 41 57 41 56 41 55 41 54 55 53 48 89 f5 48 89 fb 48 83 ec 60 4c 8b 6f 28 65 48 8b 04 25 28 00 <00> 00 48 89 44 24 58 31 c0 4d 8b bd 60 04 00 00 41 8b 97 80 00 Sep 1 19:04:30 DebianHomeServer kernel: [11437.342767] RIP [<ffffffffc06bec04>] ext4_file_open+0x24/0x280 [ext4] Sep 1 19:04:30 DebianHomeServer kernel: [11437.342905] RSP <ffffb75800b87dd0> Sep 1 19:04:30 DebianHomeServer kernel: [11437.342966] CR2: 0000000000000048 Sep 1 19:04:30 DebianHomeServer kernel: [11437.343094] ---[ end trace 0fc6e2d0e65772fc ]---

Linux DebianHomeServer 4.9.0-9-amd64 #1 SMP Debian 4.9.168-1+deb9u5 (2019-08-11) x86_64 GNU/Linux /lib/x86_64-linux-gnu/libc.so.6 -> libc-2.24.so

Hello,

I was facing the issue above for quite some time now. Unfortunately up to this point I was not able to capture any bug report. Just yesterday was the first time I was able to see the bug reports and I was able to interrupt the restart process because as soon as my system restarted all the bug reports were gone. Anyway I am hoping you can use the information above to give me an indication how I can prevent these crashes from happening as I am not aware what causes them.

Thank you so much for any help you can provide.

Regards

Manuel


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--- Begin Message --- 
Hi

This bug was filed for a very old kernel or the bug is old itself
without resolution.

If you can reproduce it with

- the current version in unstable/testing
- the latest kernel from backports

please reopen the bug, see https://www.debian.org/Bugs/server-control
for details.

Regards,
Salvatore

--- End Message ---
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