Segfault in cpu_physical_memory_set_dirty_range on hppa + artist

Bug #1890311 reported by Alexander Bulekov on 2020-08-04
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
QEMU
Undecided
Helge Deller

Bug Description

Hello,
Reproducer:

cat << EOF | ./hppa-softmmu/qemu-system-hppa -m 64 -display none \
-qtest stdio -accel qtest
writeq 0xf810049f 0x85000000000000
writew 0xf8118001 0x14
writeq 0xf81005fb 0x5c00006418001832
EOF

AddressSanitizer:DEADLYSIGNAL
=================================================================
==10793==ERROR: AddressSanitizer: SEGV on unknown address 0x7f93dbb40000 (pc 0x5577f5523078 bp 0x7ffd41ad6360 sp 0x7ffd41ad5fd0 T0)
==10793==The signal is caused by a READ memory access.

    #0 0x5577f5523078 in block_move /hw/display/artist.c:525:13
    #1 0x5577f5515fbc in artist_reg_write /hw/display/artist.c:964:9
    #2 0x5577f4c077a3 in memory_region_write_accessor /softmmu/memory.c:483:5
    #3 0x5577f4c06adc in access_with_adjusted_size /softmmu/memory.c:539:18
    #4 0x5577f4c04873 in memory_region_dispatch_write /softmmu/memory.c:1466:16
    #5 0x5577f42b2056 in flatview_write_continue /exec.c:3176:23
    #6 0x5577f429a866 in flatview_write /exec.c:3216:14
    #7 0x5577f429a387 in address_space_write /exec.c:3308:18
    #8 0x5577f4cae604 in qtest_process_command /softmmu/qtest.c:452:13
    #9 0x5577f4ca5c08 in qtest_process_inbuf /softmmu/qtest.c:710:9
    #10 0x5577f4ca4895 in qtest_read /softmmu/qtest.c:722:5
    #11 0x5577f7160c43 in qemu_chr_be_write_impl /chardev/char.c:188:9
    #12 0x5577f7160dc7 in qemu_chr_be_write /chardev/char.c:200:9
    #13 0x5577f71750b3 in fd_chr_read /chardev/char-fd.c:68:9
    #14 0x5577f72c9474 in qio_channel_fd_source_dispatch /io/channel-watch.c:84:12
    #15 0x7f93ea531897 in g_main_context_dispatch (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x4e897)
    #16 0x5577f76c137b in glib_pollfds_poll /util/main-loop.c:217:9
    #17 0x5577f76beaab in os_host_main_loop_wait /util/main-loop.c:240:5
    #18 0x5577f76be444 in main_loop_wait /util/main-loop.c:516:11
    #19 0x5577f4cc6d00 in qemu_main_loop /softmmu/vl.c:1676:9
    #20 0x5577f7301261 in main /softmmu/main.c:49:5
    #21 0x7f93e90b7e0a in __libc_start_main /build/glibc-GwnBeO/glibc-2.30/csu/../csu/libc-start.c:308:16
    #22 0x5577f41a5729 in _start (/home/alxndr/Development/qemu/general-fuzz/build/hppa-softmmu/qemu-system-hppa+0x22d4729)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /hw/display/artist.c:525:13 in block_move
==10793==ABORTING

The error occurs even with Message-Id: <email address hidden> applied (I collected the above trace with the patch-set applied)

Thanks
-Alex

Helge Deller (hdeller) on 2020-08-04
Changed in qemu:
assignee: nobody → Helge Deller (hdeller)
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