Bug 1474718
| Summary: | Unable to handle kernel NULL pointer dereference when load and unload amdkfd module | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Frank Liang <xiliang> |
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 27 | CC: | gansalmon, ichavero, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab, oded.gabbay |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-12-10 09:26:49 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Frank Liang
2017-07-25 09:04:00 UTC
Can reproduce it on Fedora27. [68211.901724] AMD IOMMUv2 functionality not available on this system [68211.939016] CRAT table not found [68211.939019] Finished initializing topology ret=0 [68211.939098] kfd kfd: Initialized module [68219.285207] BUG: unable to handle kernel NULL pointer dereference at (null) [68219.285243] IP: dev_vprintk_emit+0x140/0x220 [68219.285256] PGD 0 [68219.285257] P4D 0 [68219.285291] Oops: 0000 [#1] SMP [68219.285303] Modules linked in: amdkfd(-) amd_iommu_v2 xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack cfg80211 rfkill ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack libcrc32c iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables sunrpc snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi intel_rapl intel_powerclamp crct10dif_pclmul snd_hda_intel snd_hda_codec crc32_pclmul snd_hda_core ghash_clmulni_intel snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer intel_rapl_perf snd mei_wdt wmi_bmof mei_me [68219.285476] i2c_i801 mei iTCO_wdt iTCO_vendor_support soundcore ppdev lpc_ich wmi shpchp tpm_tis parport_pc parport tpm_tis_core tpm xenfs xen_privcmd i915 i2c_algo_bit drm_kms_helper e1000e drm crc32c_intel ptp pps_core video xen_acpi_processor xen_scsiback target_core_mod xen_pciback xen_netback xen_blkback xen_gntalloc xen_gntdev xen_evtchn [68219.285544] CPU: 4 PID: 2339 Comm: modprobe Tainted: G W 4.13.12-300.fc27.x86_64 #1 [68219.285564] Hardware name: LENOVO ThinkCentre M8500t-N000/SHARKBAY, BIOS FBKTCAAUS 08/29/2016 [68219.285583] task: ffff8802ae4f0000 task.stack: ffffc90003d4c000 [68219.285599] RIP: e030:dev_vprintk_emit+0x140/0x220 [68219.285612] RSP: e02b:ffffc90003d4fd28 EFLAGS: 00010206 [68219.285626] RAX: 000000000000006f RBX: 0000000000000011 RCX: 0000000000000006 [68219.285643] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81cac818 [68219.285660] RBP: ffffc90003d4fde8 R08: 00000000000000f0 R09: 000000000f000000 [68219.285676] R10: ffffc90003d4fe60 R11: ffffc90003d4fd49 R12: ffffc90003d4fd38 [68219.285693] R13: ffff8803fe1e1400 R14: 0000000000000000 R15: ffffc90003d4fdf8 [68219.285716] FS: 00007fcfc82ef740(0000) GS:ffff880408f00000(0000) knlGS:0000000000000000 [68219.285734] CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 [68219.285749] CR2: 0000000000000000 CR3: 000000037aecd000 CR4: 0000000000042660 [68219.285767] Call Trace: [68219.285780] ? __slab_free+0x14c/0x2d0 [68219.285792] ? __slab_free+0x14c/0x2d0 [68219.285805] dev_printk_emit+0x4a/0x70 [68219.285817] __dev_printk+0x3c/0x80 [68219.285827] _dev_info+0x64/0x80 [68219.285839] ? kfree+0x154/0x170 [68219.285855] kfd_module_exit+0x35/0x37 [amdkfd] [68219.285869] SyS_delete_module+0x1a8/0x2b0 [68219.285883] ? exit_to_usermode_loop+0x3e/0xb0 [68219.285897] entry_SYSCALL_64_fastpath+0x1a/0xa5 [68219.285911] RIP: 0033:0x7fcfc77bc5c7 [68219.285922] RSP: 002b:00007ffc55e3ad08 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [68219.285939] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fcfc77bc5c7 [68219.285956] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055fc17014e88 [68219.285973] RBP: 0000000000000000 R08: 00007ffc55e39cb1 R09: 0000000000000000 [68219.285990] R10: 00007fcfc7835880 R11: 0000000000000206 R12: 000055fc17014e20 [68219.286006] R13: 00007ffc55e39d20 R14: 000055fc17014e88 R15: 00007ffc55e3c0f0 [68219.286024] Code: 28 00 00 00 0f 85 c3 00 00 00 48 81 c4 98 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 b9 06 00 00 00 48 c7 c7 18 c8 ca 81 4c 89 f6 <f3> a6 48 c7 c2 82 07 cf 81 48 89 c6 4c 89 df 0f 95 c1 41 81 e1 [68219.286073] RIP: dev_vprintk_emit+0x140/0x220 RSP: ffffc90003d4fd28 [68219.286100] CR2: 0000000000000000 [68219.286141] ---[ end trace e7e0103a92c9f81c ]--- Hi, unfortunately, amdkfd doesn't support unloading/insmod manually. It should be loaded by the OS boot process together with amdgpu and amd_iommuv2 |