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+
+[OSS-Fuzz] Issue 27574 e1000: Loopback-related stack-overflow
+
+=== Reproducer ===
+cat << EOF | ./qemu-system-i386 -display none -machine accel=qtest, -m \
+512M -M q35 -nodefaults -device e1000,netdev=net0 -netdev user,id=net0 \
+-qtest /dev/null -qtest stdio
+outl 0xcf8 0x80000813
+outl 0xcfc 0xfe
+outl 0xcf8 0x80000803
+outw 0xcfc 0x0600
+write 0xfe000102 0x1 0x0a
+writel 0xfe000020 0x420ff00
+write 0xfe00280a 0x2 0x0828
+clock_step
+clock_step
+clock_step
+clock_step
+clock_step
+clock_step
+clock_step
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+clock_step
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+clock_step
+clock_step
+clock_step
+clock_step
+clock_step
+clock_step
+clock_step
+clock_step
+clock_step
+clock_step
+write 0xfe00281b 0x1 0x08
+write 0xf9b 0x1 0x01
+write 0x2170 0x1 0x14
+write 0x2171 0x1 0x38
+write 0x2173 0x1 0xfe
+write 0xfe000402 0x1 0x02
+write 0xfe00380a 0x2 0x0210
+write 0xfe003818 0x1 0xfa
+EOF
+
+=== Stack-trace ===
+==288216==ERROR: AddressSanitizer: stack-overflow on address 0x7fff51c96f48 (pc 0x56247061af36 bp 0x7fff51c97790 sp 0x7fff51c96f50 T0)
+#0 0x56247061af36 in __asan_memcpy (/home/alxndr/Development/qemu/build/qemu-system-i386+0x2baff36)
+#1 0x5624718eb70d in flatview_read_continue /home/alxndr/Development/qemu/build/../softmmu/physmem.c:2846:13
+#2 0x5624718ecd1b in flatview_read /home/alxndr/Development/qemu/build/../softmmu/physmem.c:2879:12
+#3 0x5624718ecd1b in address_space_read_full /home/alxndr/Development/qemu/build/../softmmu/physmem.c:2892:18
+#4 0x562470bcb75b in dma_memory_rw_relaxed /home/alxndr/Development/qemu/include/sysemu/dma.h:88:12
+#5 0x562470bcb75b in dma_memory_rw /home/alxndr/Development/qemu/include/sysemu/dma.h:127:12
+#6 0x562470bcb75b in pci_dma_rw /home/alxndr/Development/qemu/include/hw/pci/pci.h:803:12
+#7 0x562470bcb75b in pci_dma_read /home/alxndr/Development/qemu/include/hw/pci/pci.h:821:12
+#8 0x562470bcb75b in e1000_receive_iov /home/alxndr/Development/qemu/build/../hw/net/e1000.c:954:9
+#9 0x562470bca465 in e1000_receive /home/alxndr/Development/qemu/build/../hw/net/e1000.c:1025:12
+#10 0x562470bc9671 in e1000_send_packet /home/alxndr/Development/qemu/build/../hw/net/e1000.c:549:9
+#11 0x562470bc7dd8 in xmit_seg /home/alxndr/Development/qemu/build/../hw/net/e1000.c
+#12 0x562470bc4dfe in process_tx_desc /home/alxndr/Development/qemu/build/../hw/net/e1000.c:701:9
+#13 0x562470bc4dfe in start_xmit /home/alxndr/Development/qemu/build/../hw/net/e1000.c:756:9
+#14 0x562470bc4dfe in set_tctl /home/alxndr/Development/qemu/build/../hw/net/e1000.c:1127:5
+#15 0x5624719ef2f6 in memory_region_write_accessor /home/alxndr/Development/qemu/build/../softmmu/memory.c:491:5
+#16 0x5624719eed63 in access_with_adjusted_size /home/alxndr/Development/qemu/build/../softmmu/memory.c:552:18
+#17 0x5624719ee5c0 in memory_region_dispatch_write /home/alxndr/Development/qemu/build/../softmmu/memory.c
+#18 0x5624718f7776 in flatview_write_continue /home/alxndr/Development/qemu/build/../softmmu/physmem.c:2776:23
+#19 0x5624718ed13b in flatview_write /home/alxndr/Development/qemu/build/../softmmu/physmem.c:2816:14
+#20 0x5624718ed13b in address_space_write /home/alxndr/Development/qemu/build/../softmmu/physmem.c:2908:18
+#21 0x562470bcba6b in dma_memory_rw_relaxed /home/alxndr/Development/qemu/include/sysemu/dma.h:88:12
+#22 0x562470bcba6b in dma_memory_rw /home/alxndr/Development/qemu/include/sysemu/dma.h:127:12
+#23 0x562470bcba6b in pci_dma_rw /home/alxndr/Development/qemu/include/hw/pci/pci.h:803:12
+#24 0x562470bcba6b in pci_dma_write /home/alxndr/Development/qemu/include/hw/pci/pci.h:839:12
+#25 0x562470bcba6b in e1000_receive_iov /home/alxndr/Development/qemu/build/../hw/net/e1000.c:967:21
+#26 0x562470bca465 in e1000_receive /home/alxndr/Development/qemu/build/../hw/net/e1000.c:1025:12
+#27 0x562470bc9671 in e1000_send_packet /home/alxndr/Development/qemu/build/../hw/net/e1000.c:549:9
+...
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