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Bug#897255: marked as done (linux-image-4.15.0-3-amd64 - BUG: unable to handle kernel NULL pointer dereference at 0000000000000258)

Your message dated Sun, 23 May 2021 06:27:07 -0700 (PDT)
with message-id <60aa582b.1c69fb81.63989.8bad@mx.google.com>
and subject line Closing this bug (BTS maintenance for src:linux bugs)
has caused the Debian Bug report #897255,
regarding linux-image-4.15.0-3-amd64 - BUG: unable to handle kernel NULL pointer dereference at 0000000000000258
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.)


-- 
897255: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=897255
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package:	linux-image-4.15.0-3-amd64
Version:	4.15.17-1

Dear Maintainer,

after shutdown of my four VMs for backup, the start of the second VM with PCIE-Passthru (Digital Devices GmbH Octopus DVB Adapter) with 
virsh start command hangs. Reboot hangs too and only a hard reset or <sysrq b> helps.

Greets klak


[Do Apr 26 04:11:18 2018] BUG: unable to handle kernel NULL pointer dereference at 0000000000000258
[Do Apr 26 04:11:18 2018] IP: mutex_lock+0x19/0x30
[Do Apr 26 04:11:18 2018] PGD 0 P4D 0 
[Do Apr 26 04:11:18 2018] Oops: 0002 [#1] SMP PTI
[Do Apr 26 04:11:18 2018] Modules linked in: nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache vfio_pci vfio_virqfd vfio_iommu_type1 vfio vhost_net vhost tap tun ebtable_filter ebtables ip6table_filter ip6_tables devlink iptable_filter binfmt_misc intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul mgag200 ttm joydev crc32_pclmul ghash_clmulni_intel intel_cstate drm_kms_helper drm bridge stp intel_uncore llc ipmi_si iTCO_wdt evdev iTCO_vendor_support ipmi_devintf sg lpc_ich ipmi_msghandler ioatdma shpchp i7core_edac pcspkr mfd_core i5500_temp button acpi_cpufreq dm_mod nfsd auth_rpcgss nfs_acl lockd parport_pc ppdev grace sunrpc lp parport ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 fscrypto ecb btrfs zstd_decompress zstd_compress xxhash raid10 raid456 async_raid6_recov async_memcpy async_pq
[Do Apr 26 04:11:18 2018]  async_xor async_tx xor raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod ses sr_mod enclosure cdrom scsi_transport_sas sd_mod hid_generic usbhid hid ata_generic crc32c_intel aesni_intel ata_piix ehci_pci uhci_hcd aes_x86_64 crypto_simd ehci_hcd cryptd igb glue_helper libata megaraid_sas i2c_algo_bit dca usbcore ptp i2c_i801 usb_common scsi_mod pps_core
[Do Apr 26 04:11:18 2018] CPU: 2 PID: 2482 Comm: libvirtd Tainted: G        W        4.15.0-3-amd64 #1 Debian 4.15.17-1
[Do Apr 26 04:11:18 2018] Hardware name: Intel Corporation S5520HC/S5520HC, BIOS S5500.86B.01.00.0064.050520141428 05/05/2014
[Do Apr 26 04:11:18 2018] RIP: 0010:mutex_lock+0x19/0x30
[Do Apr 26 04:11:18 2018] RSP: 0018:ffffbcaf876dbd90 EFLAGS: 00010246
[Do Apr 26 04:11:18 2018] RAX: 0000000000000000 RBX: 0000000000000258 RCX: 000000010040001f
[Do Apr 26 04:11:18 2018] RDX: ffff9560307e6040 RSI: ffff9572ba4e9938 RDI: 0000000000000258
[Do Apr 26 04:11:18 2018] RBP: 0000000000000258 R08: ffff9567930d4cc0 R09: 000000010040001f
[Do Apr 26 04:11:18 2018] R10: ffffbcaf876dbd00 R11: 0000000000003800 R12: ffff9572ba4e9938
[Do Apr 26 04:11:18 2018] R13: ffffffffc0b200d0 R14: 0000000000000060 R15: ffff95602b04d3a0
[Do Apr 26 04:11:18 2018] FS:  00007f78cd6a3700(0000) GS:ffff9566bfa40000(0000) knlGS:0000000000000000
[Do Apr 26 04:11:18 2018] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[Do Apr 26 04:11:18 2018] CR2: 0000000000000258 CR3: 0000000c38548001 CR4: 00000000000226e0
[Do Apr 26 04:11:18 2018] Call Trace:
[Do Apr 26 04:11:18 2018]  drm_mode_object_unregister+0x1e/0x50 [drm]
[Do Apr 26 04:11:18 2018]  mgag200_fbdev_fini+0x56/0x70 [mgag200]
[Do Apr 26 04:11:18 2018]  mgag200_driver_unload+0x23/0x40 [mgag200]
[Do Apr 26 04:11:18 2018]  drm_dev_unregister+0x3f/0xe0 [drm]
[Do Apr 26 04:11:18 2018]  drm_put_dev+0x2e/0x60 [drm]
[Do Apr 26 04:11:18 2018]  pci_device_remove+0x3b/0xb0
[Do Apr 26 04:11:18 2018]  device_release_driver_internal+0x15a/0x220
[Do Apr 26 04:11:18 2018]  unbind_store+0x82/0x150
[Do Apr 26 04:11:18 2018]  kernfs_fop_write+0x10f/0x190
[Do Apr 26 04:11:18 2018]  vfs_write+0xad/0x1a0
[Do Apr 26 04:11:18 2018]  SyS_write+0x52/0xc0
[Do Apr 26 04:11:18 2018]  do_syscall_64+0x6e/0x130
[Do Apr 26 04:11:18 2018]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[Do Apr 26 04:11:18 2018] RIP: 0033:0x7f78d7ed0937
[Do Apr 26 04:11:18 2018] RSP: 002b:00007f78cd6a2570 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[Do Apr 26 04:11:18 2018] RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 00007f78d7ed0937
[Do Apr 26 04:11:18 2018] RDX: 000000000000000c RSI: 00007f78ac024224 RDI: 0000000000000016
[Do Apr 26 04:11:18 2018] RBP: 00007f78ac024224 R08: 0000000000000000 R09: 00007f78d97e8645
[Do Apr 26 04:11:18 2018] R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000000c
[Do Apr 26 04:11:18 2018] R13: 0000000000000000 R14: 0000000000000016 R15: 00007f78d97e889c
[Do Apr 26 04:11:18 2018] Code: 00 00 66 66 66 66 90 be 02 00 00 00 e9 11 fb ff ff 90 66 66 66 66 90 53 48 89 fb e8 a2 e2 ff ff 65 48 8b 14 25 00 5c 01 00 31 c0 <f0> 48 0f b1 13 48 85 c0 75 02 5b c3 48 89 df 5b eb c5 0f 1f 44 
[Do Apr 26 04:11:18 2018] RIP: mutex_lock+0x19/0x30 RSP: ffffbcaf876dbd90
[Do Apr 26 04:11:18 2018] CR2: 0000000000000258
[Do Apr 26 04:11:18 2018] ---[ end trace acf729b39893aa65 ]---

--- End Message ---
--- 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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