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+ARM Highbank Crashes Realted to GIC
+
+Hello,
+Here are some QTest reproducers for crashes on ARM Highbank that all seem to be related to the gic device.
+
+Reproducer 1:
+cat << EOF | ./arm-softmmu/qemu-system-arm -machine highbank \
+-nographic -monitor none -serial none -qtest stdio
+writel 0xfff11f00 0x8405f559
+writel 0xfff117fd 0x5c057bd8
+EOF
+
+==10595==ERROR: AddressSanitizer: SEGV on unknown address 0x62b000013e01 (pc 0x55b6ab85cc91 bp 0x7fff60bd4d70 sp 0x7fff60bd4ce0 T0)
+==10595==The signal is caused by a READ memory access.
+    #0 0x55b6ab85cc91 in gic_get_current_cpu /home/alxndr/Development/qemu/general-fuzz/hw/intc/arm_gic.c:60:12
+    #1 0x55b6ab85e1bd in gic_dist_writeb /home/alxndr/Development/qemu/general-fuzz/hw/intc/arm_gic.c:1182:11
+    #2 0x55b6ab855a97 in gic_dist_write /home/alxndr/Development/qemu/general-fuzz/hw/intc/arm_gic.c:1514:9
+    #3 0x55b6aa1650d4 in memory_region_write_with_attrs_accessor /home/alxndr/Development/qemu/general-fuzz/softmmu/memory.c:503:12
+    #4 0x55b6aa163ac6 in access_with_adjusted_size /home/alxndr/Development/qemu/general-fuzz/softmmu/memory.c:544:18
+    #5 0x55b6aa161f35 in memory_region_dispatch_write /home/alxndr/Development/qemu/general-fuzz/softmmu/memory.c:1473:13
+    #6 0x55b6a9313949 in flatview_write_continue /home/alxndr/Development/qemu/general-fuzz/exec.c:3176:23
+    #7 0x55b6a92fca11 in flatview_write /home/alxndr/Development/qemu/general-fuzz/exec.c:3216:14
+    #8 0x55b6a92fc54e in address_space_write /home/alxndr/Development/qemu/general-fuzz/exec.c:3308:18
+=================================================================
+
+Reproducer 2:
+cat << EOF | ./arm-softmmu/qemu-system-arm -machine highbank \
+-nographic -monitor none -serial none -qtest stdio
+writeq 0xfff11f00 0x613a650f0fda6555
+EOF
+
+==1375==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x608000001c80 at pc 0x5618928c486e bp 0x7ffe22c4ee10 sp 0x7ffe22c4ee08
+READ of size 8 at 0x608000001c80 thread T0
+    #0 0x5618928c486d in address_space_translate_iommu /home/alxndr/Development/qemu/general-fuzz/exec.c:451:23
+    #1 0x561892850acc in flatview_do_translate /home/alxndr/Development/qemu/general-fuzz/exec.c:524:16
+    #2 0x5618928514ad in flatview_translate /home/alxndr/Development/qemu/general-fuzz/exec.c:584:15
+    #3 0x5618928b1e14 in flatview_write_continue /home/alxndr/Development/qemu/general-fuzz/exec.c:3199:14
+    #4 0x56189289aa11 in flatview_write /home/alxndr/Development/qemu/general-fuzz/exec.c:3216:14
+    #5 0x56189289a54e in address_space_write /home/alxndr/Development/qemu/general-fuzz/exec.c:3308:18
+    #6 0x5618937a5e13 in qtest_process_command /home/alxndr/Development/qemu/general-fuzz/softmmu/qtest.c:452:13
+    #7 0x56189379d89f in qtest_process_inbuf /home/alxndr/Development/qemu/general-fuzz/softmmu/qtest.c:710:9
+    #8 0x56189379c680 in qtest_read /home/alxndr/Development/qemu/general-fuzz/softmmu/qtest.c:722:5
+=================================================================
+
+Reproducer 3:
+cat << EOF | ./arm-softmmu/qemu-system-arm -machine highbank \
+-nographic -monitor none -serial none -qtest stdio
+writeq 0xfff11000 0x700000b
+writeq 0xfff11f00 0x4f4f4fff54a7afaf
+writel 0xfff10100 0x600001ff
+EOF
+
+==23743==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x62b000006a92 at pc 0x55d690d980e1 bp 0x7ffe606082d0 sp 0x7ffe606082c8
+READ of size 1 at 0x62b000006a92 thread T0
+    #0 0x55d690d980e0 in gic_get_best_irq /home/alxndr/Development/qemu/general-fuzz/hw/intc/arm_gic.c:94:13
+    #1 0x55d690d9485b in gic_update_internal /home/alxndr/Development/qemu/general-fuzz/hw/intc/arm_gic.c:185:13
+    #2 0x55d690d90376 in gic_update /home/alxndr/Development/qemu/general-fuzz/hw/intc/arm_gic.c:226:5
+    #3 0x55d690dc0879 in gic_cpu_write /home/alxndr/Development/qemu/general-fuzz/hw/intc/arm_gic.c:1758:9
+    #4 0x55d690da41c0 in gic_thiscpu_write /home/alxndr/Development/qemu/general-fuzz/hw/intc/arm_gic.c:1777:12
+    #5 0x55d68f6b30d4 in memory_region_write_with_attrs_accessor /home/alxndr/Development/qemu/general-fuzz/softmmu/memory.c:503:12
+    #6 0x55d68f6b1ac6 in access_with_adjusted_size /home/alxndr/Development/qemu/general-fuzz/softmmu/memory.c:544:18
+    #7 0x55d68f6aff35 in memory_region_dispatch_write /home/alxndr/Development/qemu/general-fuzz/softmmu/memory.c:1473:13
+    #8 0x55d68e861949 in flatview_write_continue /home/alxndr/Development/qemu/general-fuzz/exec.c:3176:23
+    #9 0x55d68e84aa11 in flatview_write /home/alxndr/Development/qemu/general-fuzz/exec.c:3216:14
+    #10 0x55d68e84a54e in address_space_write /home/alxndr/Development/qemu/general-fuzz/exec.c:3308:18
+    #11 0x55d68f755537 in qtest_process_command /home/alxndr/Development/qemu/general-fuzz/softmmu/qtest.c:447:13
+    #12 0x55d68f74d89f in qtest_process_inbuf /home/alxndr/Development/qemu/general-fuzz/softmmu/qtest.c:710:9
+    #13 0x55d68f74c680 in qtest_read /home/alxndr/Development/qemu/general-fuzz/softmmu/qtest.c:722:5
+    #14 0x55d692dddc36 in qemu_chr_be_write_impl /home/alxndr/Development/qemu/general-fuzz/chardev/char.c:188:9
+    #15 0x55d692dddd79 in qemu_chr_be_write /home/alxndr/Development/qemu/general-fuzz/chardev/char.c:200:9
+    #16 0x55d692df105e in fd_chr_read /home/alxndr/Development/qemu/general-fuzz/chardev/char-fd.c:68:9
+    #17 0x55d692f395df in qio_channel_fd_source_dispatch /home/alxndr/Development/qemu/general-fuzz/io/channel-watch.c:84:12
+    #18 0x7f69a1b50897 in g_main_context_dispatch (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x4e897)
+    #19 0x55d6932f5c83 in glib_pollfds_poll /home/alxndr/Development/qemu/general-fuzz/util/main-loop.c:217:9
+    #20 0x55d6932f35b6 in os_host_main_loop_wait /home/alxndr/Development/qemu/general-fuzz/util/main-loop.c:240:5
+    #21 0x55d6932f2f97 in main_loop_wait /home/alxndr/Development/qemu/general-fuzz/util/main-loop.c:516:11
+    #22 0x55d68f76c62d in qemu_main_loop /home/alxndr/Development/qemu/general-fuzz/softmmu/vl.c:1676:9
+    #23 0x55d692f6f20c in main /home/alxndr/Development/qemu/general-fuzz/softmmu/main.c:49:5
+    #24 0x7f69a06d6e0a in __libc_start_main /build/glibc-GwnBeO/glibc-2.30/csu/../csu/libc-start.c:308:16
+    #25 0x55d68e753459 in _start (/home/alxndr/Development/qemu/general-fuzz/build/arm-softmmu/qemu-system-arm+0x3254459)
+
+0x62b000006a92 is located 2 bytes to the right of 26768-byte region [0x62b000000200,0x62b000006a90)
+allocated by thread T0 here:
+    #0 0x55d68e7cbe4d in malloc (/home/alxndr/Development/qemu/general-fuzz/build/arm-softmmu/qemu-system-arm+0x32cce4d)
+    #1 0x7f69a1b56500 in g_malloc (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x54500)
+    #2 0x55d69254f231 in object_new /home/alxndr/Development/qemu/general-fuzz/qom/object.c:708:12
+    #3 0x55d69034bf01 in qdev_new /home/alxndr/Development/qemu/general-fuzz/hw/core/qdev.c:136:12
+    #4 0x55d68f2b7aa4 in calxeda_init /home/alxndr/Development/qemu/general-fuzz/hw/arm/highbank.c:319:15
+    #5 0x55d68f2b6466 in highbank_init /home/alxndr/Development/qemu/general-fuzz/hw/arm/highbank.c:411:5
+    #6 0x55d6903d43f1 in machine_run_board_init /home/alxndr/Development/qemu/general-fuzz/hw/core/machine.c:1134:5
+    #7 0x55d68f77e0ee in qemu_init /home/alxndr/Development/qemu/general-fuzz/softmmu/vl.c:4356:5
+    #8 0x55d692f6f207 in main /home/alxndr/Development/qemu/general-fuzz/softmmu/main.c:48:5
+    #9 0x7f69a06d6e0a in __libc_start_main /build/glibc-GwnBeO/glibc-2.30/csu/../csu/libc-start.c:308:16
+
+
+Let me know if I can provide any further info.
+-Alex
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