Commited as edfe2eb4360cde4ed5d95bda7777edcb3510f76a.
** Changed in: qemu
Status: Confirmed => Fix Committed
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https://bugs.launchpad.net/bugs/1913917
Title:
aarch64-virt: heap-use-after-free in gic_dist_writeb
Status in QEMU:
Fix Committed
Bug description:
Reproducer:
cat << EOF | ./qemu-system-aarch64 \
-machine virt,accel=qtest -qtest stdio
writel 0x8000f00 0x5affaf
write 0x8000eff 0x1 0x0
EOF
Stacktrace:
../hw/intc/arm_gic.c:1419:17: runtime error: index 3068 out of bounds for
type 'gic_irq_state [1020]'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior
../hw/intc/arm_gic.c:1419:17 in
=================================================================
==641550==ERROR: AddressSanitizer: heap-use-after-free on address
0x629000023a85 at pc 0x55b5dfb0fbf8 bp 0x7fff95cb5870 sp 0x7fff95cb5868
WRITE of size 1 at 0x629000023a85 thread T0
#0 0x55b5dfb0fbf7 in gic_dist_writeb
/home/alxndr/Development/qemu/build/../hw/intc/arm_gic.c:1419:17
#1 0x55b5dfb061e2 in gic_dist_write
/home/alxndr/Development/qemu/build/../hw/intc/arm_gic.c
#2 0x55b5e0809ef4 in memory_region_write_with_attrs_accessor
/home/alxndr/Development/qemu/build/../softmmu/memory.c:511:12
#3 0x55b5e0808bfb in access_with_adjusted_size
/home/alxndr/Development/qemu/build/../softmmu/memory.c:552:18
#4 0x55b5e0808467 in memory_region_dispatch_write
/home/alxndr/Development/qemu/build/../softmmu/memory.c
#5 0x55b5e0b98ffb in flatview_write_continue
/home/alxndr/Development/qemu/build/../softmmu/physmem.c:2759:23
#6 0x55b5e0b8e71b in flatview_write
/home/alxndr/Development/qemu/build/../softmmu/physmem.c:2799:14
#7 0x55b5e0b8e71b in address_space_write
/home/alxndr/Development/qemu/build/../softmmu/physmem.c:2891:18
#8 0x55b5e07fad35 in qtest_process_command
/home/alxndr/Development/qemu/build/../softmmu/qtest.c:654:9
#9 0x55b5e07f3b97 in qtest_process_inbuf
/home/alxndr/Development/qemu/build/../softmmu/qtest.c:797:9
#10 0x55b5e1044286 in fd_chr_read
/home/alxndr/Development/qemu/build/../chardev/char-fd.c:68:9
#11 0x7fa997b30aae in g_main_context_dispatch
(/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x51aae)
#12 0x55b5e169f363 in glib_pollfds_poll
/home/alxndr/Development/qemu/build/../util/main-loop.c:232:9
#13 0x55b5e169f363 in os_host_main_loop_wait
/home/alxndr/Development/qemu/build/../util/main-loop.c:255:5
#14 0x55b5e169f363 in main_loop_wait
/home/alxndr/Development/qemu/build/../util/main-loop.c:531:11
#15 0x55b5e075a599 in qemu_main_loop
/home/alxndr/Development/qemu/build/../softmmu/runstate.c:721:9
#16 0x55b5de9e71fd in main
/home/alxndr/Development/qemu/build/../softmmu/main.c:50:5
#17 0x7fa9975d5cc9 in __libc_start_main csu/../csu/libc-start.c:308:16
#18 0x55b5de93abc9 in _start
(/home/alxndr/Development/qemu/build/qemu-system-aarch64+0x3350bc9)
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