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Title: [OSS-Fuzz] Issue 29586 e1000e: Memcpy-param-overlap in flatview_write_continue Status in QEMU: New Bug description: === Reproducer === cat << EOF | ./qemu-system-i386 -M q35 -accel qtest \ -qtest stdio -nographic -nodefaults -device \ e1000e,netdev=net0 -netdev user,id=net0 outl 0xcf8 0x80000811 outl 0xcfc 0x5ac600 outl 0xcf8 0x80000801 outl 0xcfc 0x26000000 write 0x5ac60100 0x4 0x56000302 write 0x5ac6011a 0x2 0x1006 write 0x5ac60120 0x1 0x25 write 0x5ac6042a 0x2 0x4048 write 0x5ac60431 0x1 0x04 write 0x4240 0x1 0xff write 0x4241 0x1 0x01 write 0x4249 0x1 0xf5 write 0x1ff 0x1 0x11 write 0x5ac60401 0x1 0x12 write 0x5ac6043a 0x2 0x3000 write 0x5ac60112 0x2 0xf090 write 0x5ac60430 0x1 0x0 write 0x239 0x1 0xff write 0x2bb 0x1 0x41 write 0x9531 0x1 0xff write 0x9532 0x1 0xff write 0x9533 0x1 0xff write 0x9534 0x1 0xff write 0x9535 0x1 0xff write 0x9536 0x1 0xff write 0x9537 0x1 0xff write 0x5ac60403 0x1 0x12 EOF === Stack Trace === ==1364==ERROR: AddressSanitizer: memcpy-param-overlap: memory ranges [0x7f90b7e00025,0x7f90b7e00604) and [0x7f90b7e00225, 0x7f90b7e00804) overlap #0 __asan_memcpy /src/llvm-project/compiler-rt/lib/asan/asan_interceptors_memintrinsics.cpp:22:3 #1 flatview_write_continue /src/qemu/softmmu/physmem.c:2764:13 #2 flatview_write /src/qemu/softmmu/physmem.c:2799:14 #3 address_space_write /src/qemu/softmmu/physmem.c:2891:18 #4 address_space_rw /src/qemu/softmmu/physmem.c:2901:16 #5 dma_memory_rw_relaxed /src/qemu/include/sysemu/dma.h:88:12 #6 dma_memory_rw /src/qemu/include/sysemu/dma.h:127:12 #7 pci_dma_rw /src/qemu/include/hw/pci/pci.h:801:12 #8 pci_dma_write /src/qemu/include/hw/pci/pci.h:837:12 #9 e1000e_write_to_rx_buffers /src/qemu/hw/net/e1000e_core.c:1405:9 #10 e1000e_write_packet_to_guest /src/qemu/hw/net/e1000e_core.c:1575:21 #11 e1000e_receive_iov /src/qemu/hw/net/e1000e_core.c:1702:9 #12 e1000e_nc_receive_iov /src/qemu/hw/net/e1000e.c:214:12 #13 net_tx_pkt_sendv /src/qemu/hw/net/net_tx_pkt.c:556:9 #14 net_tx_pkt_send /src/qemu/hw/net/net_tx_pkt.c:633:9 #15 net_tx_pkt_send_loopback /src/qemu/hw/net/net_tx_pkt.c:646:11 #16 e1000e_tx_pkt_send /src/qemu/hw/net/e1000e_core.c:657:16 #17 e1000e_process_tx_desc /src/qemu/hw/net/e1000e_core.c:736:17 #18 e1000e_start_xmit /src/qemu/hw/net/e1000e_core.c:927:9 #19 e1000e_set_tctl /src/qemu/hw/net/e1000e_core.c:2424:9 #20 e1000e_core_write /src/qemu/hw/net/e1000e_core.c:3256:9 #21 e1000e_mmio_write /src/qemu/hw/net/e1000e.c:110:5 #22 memory_region_write_accessor /src/qemu/softmmu/memory.c:491:5 #23 access_with_adjusted_size /src/qemu/softmmu/memory.c:552:18 #24 memory_region_dispatch_write /src/qemu/softmmu/memory.c:0:13 #25 flatview_write_continue /src/qemu/softmmu/physmem.c:2759:23 #26 flatview_write /src/qemu/softmmu/physmem.c:2799:14 #27 address_space_write /src/qemu/softmmu/physmem.c:2891:18 #28 __wrap_qtest_writeq /src/qemu/tests/qtest/fuzz/qtest_wrappers.c:187:9 #29 op_write /src/qemu/tests/qtest/fuzz/generic_fuzz.c:479:13 #30 generic_fuzz /src/qemu/tests/qtest/fuzz/generic_fuzz.c:681:17 OSS-Fuzz Report: https://bugs.chromium.org/p/oss- fuzz/issues/detail?id=29586 To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1911839/+subscriptions