Date: Thu, 25 Nov 2021 22:16:58 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 260049] vtnet modern/1.x panic - data segment exception trap Message-ID: <bug-260049-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D260049 Bug ID: 260049 Summary: vtnet modern/1.x panic - data segment exception trap Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Many People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: alfredo@freebsd.org I consistently get fatal kernel trap when sending files using two simultane= ous SCP instances [2] to a powerpc64 QEMU [1] KVM accelerated VM in a Linux hos= t.=20 The issue is reproducible with vtnet modern/1.x mode. With vtnet legacy/pre= -1.0 mode it works fine: fatal kernel trap: exception =3D 0x380 (data segment exception) virtual address =3D 0xdeadc0dedeadc0e8 dsisr =3D 0x0 srr0 =3D 0xc0000000006047f8 (0x6047f8) srr1 =3D 0x8000000000009032 current msr =3D 0x8000000000009032 lr =3D 0xc000000000604798 (0x604798) frame =3D 0xc008000035d57250 curthread =3D 0xc008000035973080 pid =3D 12, comm =3D irq4608:-irtio_pci1 panic: data segment exception trap cpuid =3D 4 time =3D 1637888248 KDB: stack backtrace: 0xc008000035d56e70: at kdb_backtrace+0x60 0xc008000035d56f80: at vpanic+0x1f0 0xc008000035d57030: at panic+0x44 0xc008000035d57060: at trap+0x324 0xc008000035d57190: at powerpc_interrupt+0x1cc 0xc008000035d57220: kernel DSE trap @ 0xdeadc0dedeadc0e8 by vtnet_rxq_eof+0x174: srr1=3D0x8000000000009032 r1=3D0xc008000035d574d0 cr=3D0x44c00488 xer=3D0x20040000 ctr=3D= 0x1 r2=3D0xc0000000013e9000 frame=3D0xc008000035d57250 0xc008000035d574d0: at vtnet_rxq_eof+0x110 0xc008000035d57600: at vtnet_rx_vq_process+0xe0 0xc008000035d57660: at virtqueue_intr+0x2c 0xc008000035d57690: at vtpci_intx_intr+0x11c 0xc008000035d576d0: at ithread_loop+0x3b8 0xc008000035d57820: at fork_exit+0xc4 0xc008000035d578c0: at fork_trampoline+0x18 0xc008000035d578f0: at -0x4 KDB: enter: panic [ thread pid 12 tid 100077 ] Stopped at kdb_enter+0x78: ori r0, r0, 0x0 db>=20 ------ [1] # qemu-system-ppc64 -name guest=3Dalfredo1 -smp 8 -m 8g -drive file=3Dvdisks/vm1-disk1.qcow2,format=3Dqcow2,if=3Dvirtio -device virtio-net-pci,netdev=3Dbr0,disable-legacy=3Don,disable-modern=3Doff,mac=3D= 52:54:a1:f4:ed:01 -netdev bridge,id=3Dbr0 -enable-kvm -machine pseries,accel=3Dkvm,cap-hpt-max-page-size=3D2M -mem-prealloc -mem-path /dev/hugepages -vnc :62 -vga none -nographic -snapshot $ qemu-system-ppc64 --version QEMU emulator version 6.0.0 Copyright (c) 2003-2021 Fabrice Bellard and the QEMU Project developers [2] SSH copy command: sshpass -p "<pass>" scp <2GB_FILE> root@<IP>:d.iso & sshpass -p "pass" scp <2GB_FILE> root@<IP>:c.iso & --=20 You are receiving this mail because: You are the assignee for the bug.=
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