VM reboot panic with DSA MDEV pass through, panic stack below: [ 283.695576] BUG: kernel NULL pointer dereference, address: 0000000000000100 [ 283.703473] #PF: supervisor instruction fetch in kernel mode [ 283.709900] #PF: error_code(0x0010) - not-present page [ 283.715746] PGD 1c71bf067 P4D 0 [ 283.719450] Oops: 0010 [#1] SMP NOPTI [ 283.723662] CPU: 32 PID: 4761 Comm: qemu-system-x86 Not tainted 5.10.112-siov #1 [ 283.732032] Hardware name: Intel Corporation ArcherCity/ArcherCity, BIOS EGSDCRB1.SYS.0077.D01.2203211346 03/21/2022 [ 283.743910] RIP: 0010:0x100 [ 283.747135] Code: Unable to access opcode bytes at RIP 0xd6. [ 283.753554] RSP: 0018:ff725f630dc07df0 EFLAGS: 00010046 [ 283.759494] RAX: 0000000000000100 RBX: ff436250840a0a48 RCX: 0000000000000001 [ 283.767576] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ff436250840a0d28 [ 283.775652] RBP: 0000000000000000 R08: ff436250840a0d28 R09: 0000000000000000 [ 283.783733] R10: ff43626011588800 R11: 0000000000000000 R12: 00000000ffffffe8 [ 283.791817] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 283.799894] FS: 00007f547ebd7c00(0000) GS:ff43625f2f000000(0000) knlGS:0000000000000000 [ 283.809025] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 283.815568] CR2: 0000000000000100 CR3: 000000010c97e003 CR4: 0000000000773ee0 [ 283.823649] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 283.831711] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400 [ 283.839787] PKRU: 55555554 [ 283.842905] Call Trace: [ 283.845764] ? __wake_up_common+0x72/0x180 [ 283.850470] ? eventfd_signal+0x6b/0xa0 [ 283.854883] ? idxd_vdcm_ioctl+0x586/0x870 [idxd_mdev] [ 283.860743] ? handle_mm_fault+0xc1/0x280 [ 283.865336] ? __x64_sys_ioctl+0x83/0xb0 [ 283.869841] ? do_syscall_64+0x33/0x40 [ 283.874153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 283.880114] Modules linked in: idxd_mdev vfio_pci vfio_virqfd nf_conntrack_netlink xfrm_user xt_CHECKSUM xt_MASQUERADE xt_addrtype xt_conntrack br_netfilter ipt_REJECT nf_reject_ipv4 nft_compat nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_counter nf_tables nfnetlink bridge stp llc overlay dm_multipath intel_rapl_msr intel_rapl_common i10nm_edac nfit x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass joydev isst_if_mbox_pci snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_intel isst_if_mmio isst_if_common snd_intel_dspcfg snd_hda_codec snd_hda_core idxd snd_pcm idxd_bus snd_timer mei_me mei acpi_power_meter parport_pc ppdev lp parport fuse ip_tables crc32c_intel ast drm_vram_helper i2c_i801 drm_ttm_helper i2c_smbus i2c_ismt ttm igc wmi pinctrl_emmitsburg pinctrl_intel [ 283.962253] CR2: 0000000000000100 [ 283.966064] ---[ end trace 893c7883436fa741 ]--- [ 284.978394] RIP: 0010:0x100 [ 284.981684] Code: Unable to access opcode bytes at RIP 0xd6. [ 284.988117] RSP: 0018:ff725f630dc07df0 EFLAGS: 00010046 [ 284.994068] RAX: 0000000000000100 RBX: ff436250840a0a48 RCX: 0000000000000001 [ 285.002136] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ff436250840a0d28 [ 285.010218] RBP: 0000000000000000 R08: ff436250840a0d28 R09: 0000000000000000 [ 285.018282] R10: ff43626011588800 R11: 0000000000000000 R12: 00000000ffffffe8 [ 285.026349] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 285.034417] FS: 00007f547ebd7c00(0000) GS:ff43625f2f000000(0000) knlGS:0000000000000000 [ 285.043567] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 285.050097] CR2: 0000000000000100 CR3: 000000010c97e003 CR4: 0000000000773ee0 [ 285.058161] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 285.066248] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400 [ 285.074309] PKRU: 55555554
代码已经合入，问题置为resolved