Bug 1708076
| Summary: | QEMU core dump "qemu_set_nonblock: Assertion `f != -1' failed" with a non-exist fd on tap | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux Advanced Virtualization | Reporter: | CongLi <coli> |
| Component: | qemu-kvm | Assignee: | Virtualization Maintenance <virt-maint> |
| qemu-kvm sub component: | Networking | QA Contact: | Virtualization Bugs <virt-bugs> |
| Status: | CLOSED DUPLICATE | Docs Contact: | |
| Severity: | medium | ||
| Priority: | medium | CC: | aadam, chayang, hannsj_uhl, jasowang, juzhang, lvivier, pezhang, virt-maint, yuhuang |
| Version: | 8.1 | Keywords: | Triaged |
| Target Milestone: | rc | ||
| Target Release: | 8.1 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-08-13 10:49:36 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: | |||
*** Bug 1709627 has been marked as a duplicate of this bug. *** Reproduced with qemu-kvm-4.0.0-4.module+el8.1.0+3356+cda7f1ee, and can't reproduce with qemu-kvm-2.12.0-78.module+el8.1.0+3434+46ed87c2. FYI, there used to be some discussion on this https://patchwork.kernel.org/patch/10029443/ Thanks Still hit this issue in 'qemu-kvm-4.1.0-14.module+el8.2.0+4677+51176c2e'. QEMU has been recently split into sub-components and as a one-time operation to avoid breakage of tools, we are setting the QEMU sub-component of this BZ to "General". Please review and change the sub-component if necessary the next time you review this BZ. Thanks This problem should be fixed in qemu-kvm-5.1.0 (by e7b347d0bf64). See BZ 1848274. *** This bug has been marked as a duplicate of bug 1848274 *** |
Description of problem: QEMU core dump when tap device with a non-exist fd. qemu-kvm: util/oslib-posix.c:245: qemu_set_nonblock: Assertion `f != -1' failed. ovmf.sh: line 30: 811 Aborted (core dumped) MALLOC_PERTURB_=1 /usr/libexec/qemu-kvm -S -name 'avocado-vt-vm1' -machine q35 -nodefaults -device VGA,bus=pcie.0,addr=0x1 -device pcie-root-port,id=pcie.0-root-port-3,slot=3,chassis=3,addr=0x3,bus=pcie.0 -device virtio-scsi-pci,id=virtio_scsi_pci0,bus=pcie.0-root-port-3,addr=0x0 -drive id=drive_image1,if=none,snapshot=off,aio=threads,cache=none,format=qcow2,file=/home/kvm_autotest_root/images/rhel810-64-virtio-scsi.qcow2 -device scsi-hd,id=image1,drive=drive_image1 -device pcie-root-port,id=pcie.0-root-port-4,slot=4,chassis=4,addr=0x4,bus=pcie.0 -device virtio-net-pci,mac=9a:91:92:93:94:95,id=id3cE67z,vectors=4,netdev=idR4I0Ft,bus=pcie.0-root-port-4,addr=0x0 -netdev tap,id=idR4I0Ft,vhost=on,vhostfd=22,fd=16 .... (gdb) bt #0 0x00007f3a81dcd93f in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 #1 0x00007f3a81db7c95 in __GI_abort () at abort.c:79 #2 0x00007f3a81db7b69 in __assert_fail_base (fmt=0x7f3a81f1e860 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x5560e23dd3bd "f != -1", file=0x5560e23dd34f "util/oslib-posix.c", line=245, function=<optimized out>) at assert.c:92 #3 0x00007f3a81dc5df6 in __GI___assert_fail (assertion=assertion@entry=0x5560e23dd3bd "f != -1", file=file@entry=0x5560e23dd34f "util/oslib-posix.c", line=line@entry=245, function=function@entry=0x5560e23dd550 <__PRETTY_FUNCTION__.20478> "qemu_set_nonblock") at assert.c:101 #4 0x00005560e223e4e1 in qemu_set_nonblock (fd=fd@entry=16) at util/oslib-posix.c:245 #5 0x00005560e2133f39 in net_init_tap (netdev=0x5560e43b3460, name=0x5560e43b3690 "idR4I0Ft", peer=0x0, errp=0x7fff7e7248d0) at net/tap.c:794 #6 0x00005560e2123c37 in net_client_init1 (errp=0x7fff7e7248d0, is_netdev=true, object=0x5560e43b3460) at net/net.c:1060 #7 0x00005560e2123c37 in net_client_init (opts=<optimized out>, is_netdev=<optimized out>, errp=0x7fff7e724bd0) at net/net.c:1154 #8 0x00005560e224d872 in qemu_opts_foreach (list=<optimized out>, func=func@entry=0x5560e2124180 <net_init_netdev>, opaque=opaque@entry=0x0, errp=errp@entry=0x7fff7e724bd0) at util/qemu-option.c:1171 #9 0x00005560e2126576 in net_init_clients (errp=0x7fff7e724bd0) at net/net.c:1564 #10 0x00005560e1ee7131 in main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at vl.c:4432 (gdb) q Version-Release number of selected component (if applicable): qemu-kvm-4.0.0-0.module+el8.1.0+3169+3c501422.x86_64 How reproducible: 100% Steps to Reproduce: 1. Boot a guest with a non-exist fd to tap device -netdev tap,id=idR4I0Ft,vhost=on,vhostfd=22,fd=16 \ ^^^^^^^^^^^^^^^^ 2. 3. Actual results: QEMU core dump. Expected results: QEMU should give a kindly warning instead of core dump. Additional info: 1. QEMU CML: MALLOC_PERTURB_=1 \ /usr/libexec/qemu-kvm \ -S \ -name 'avocado-vt-vm1' \ -machine q35 \ -nodefaults \ -device VGA,bus=pcie.0,addr=0x1 \ -device pcie-root-port,id=pcie.0-root-port-4,slot=4,chassis=4,addr=0x4,bus=pcie.0 \ -device virtio-net-pci,mac=9a:91:92:93:94:95,id=id3cE67z,vectors=4,netdev=idR4I0Ft,bus=pcie.0-root-port-4,addr=0x0 \ -netdev tap,id=idR4I0Ft,vhost=on,vhostfd=22,fd=16 \ -m 14336 \ -smp 12,maxcpus=12,cores=6,threads=1,sockets=2 \ -cpu 'SandyBridge',+kvm_pv_unhalt \ -monitor stdio