BUG: Unable to handle kernel NULL pointer dereference at 00000000000004ac

Type:
kernel NULL pointer
Class:
bug
Kernel version:
4.11
Tainted info:
  • G - All loaded modules have GPL or compatible license
  • W - Taint on warning
Architecture:
x86_64
Distribution:
Debian
Hardware:
LENOVO 20A8S01900/20A8S01900, BIOS GRET52WW, LENOVO 20A8S01900/20A8S01900, BIOS GRET52WW (1.29 ) 05/05/2017
Guilty info:
  • Function: in6_dev_finish_destroy
Registers:
  • PID: 1142
  • RIP: 0010
  • RSP: ffffbe9cc1347ce8
  • EFLAGS: 00010297
  • RAX: 0000000000000024
  • RBX: ffff9e077555a400
  • RCX: 0000000000000006
  • RDX: 0000000000000000
  • RSI: 0000000000000000
  • RDI: 0000000000000009
  • RBP: 0000000000000004
  • R08: 0000000000000001
  • R09: 00000000000004f6
  • R11: 00000000000004f6
  • R12: 0000000000000000
  • R14: ffffbe9cc1347d48
  • R15: ffffbe9cc1347d50
  • GS: ffff9e08de200000(0000)
  • knlGS: 0000000000000000
  • DS: 0000
  • ES: 0000
  • CR0: 0000000080050033
  • CR2: 00000000000004ac
  • CR3: 000000005c809000
  • CR4: 00000000001406f0
Dissassembled code:
  • Code: 0f 1f 44 00 00 55 53 48 8d 57 08 48 8b 47 08 48 89 fb 48 8b 2f 48 39 c2 75 3a 48 83 7b 18 00 75 4b 48 83 bb 30 02 00 00 00 75 5c 8b 85 a8 04 00 00 65 ff 08 8b 83 f8 00 00 00 85 c0 74 5b 48
  • All code
  • ========
  • 0: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
  • 5: 55 push %rbp
  • 6: 53 push %rbx
  • 7: 48 8d 57 08 lea 0x8(%rdi),%rdx
  • b: 48 8b 47 08 mov 0x8(%rdi),%rax
  • f: 48 89 fb mov %rdi,%rbx
  • 12: 48 8b 2f mov (%rdi),%rbp
  • 15: 48 39 c2 cmp %rax,%rdx
  • 18: 75 3a jne 0x54
  • 1a: 48 83 7b 18 00 cmpq $0x0,0x18(%rbx)
  • 1f: 75 4b jne 0x6c
  • 21: 48 83 bb 30 02 00 00 cmpq $0x0,0x230(%rbx)
  • 28: 00
  • 29: 75 5c jne 0x87
  • 2b:* 48 8b 85 a8 04 00 00 mov 0x4a8(%rbp),%rax <-- trapping instruction
  • 32: 65 ff 08 decl %gs:(%rax)
  • 35: 8b 83 f8 00 00 00 mov 0xf8(%rbx),%eax
  • 3b: 85 c0 test %eax,%eax
  • 3d: 74 5b je 0x9a
  • 3f: 48 rex.W
  • Code starting with the faulting instruction
  • ===========================================
  • 0: 48 8b 85 a8 04 00 00 mov 0x4a8(%rbp),%rax
  • 7: 65 ff 08 decl %gs:(%rax)
  • a: 8b 83 f8 00 00 00 mov 0xf8(%rbx),%eax
  • 10: 85 c0 test %eax,%eax
  • 12: 74 5b je 0x6f
  • 14: 48 rex.W
Linked modules:

veth, loop, ipt_MASQUERADE, nf_nat_masquerade_ipv4, nf_conntrack_netlink, nfnetlink, xfrm_user, xfrm_algo, iptable_nat, nf_conntrack_ipv4, nf_defrag_ipv4, nf_nat_ipv4, xt_addrtype, iptable_filter, xt_conntrack, br_netfilter, bridge, stp, llc, overlay, ctr, ccm, fuse, bnep, nls_ascii, nls_cp437, vfat, snd_hda_codec_hdmi, arc4, intel_rapl, iTCO_wdt, iTCO_vendor_support, x86_pkg_temp_thermal, intel_powerclamp, coretemp, kvm_intel, irqbypass, crct10dif_pclmul, crc32_pclmul, ghash_clmulni_intel, intel_cstate, iwlmvm, mac80211, intel_uncore, iwlwifi, uvcvideo, intel_rapl_perf, efi_pstore, snd_hda_codec_realtek, snd_hda_codec_generic, i915, videobuf2_vmalloc, btusb, videobuf2_memops, btrtl, btbcm, videobuf2_v4l2, btintel, snd_hda_intel, joydev, evdev, drm_kms_helper, pcspkr, mei_me, videobuf2_core

Last seen similar oops:
2017-07-16
Total count:
1 (from 1 unique sources)

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