Segfault in artist_vram_read
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
QEMU |
Fix Released
|
Undecided
|
Helge Deller |
Bug Description
Hello,
Reproducer:
cat << EOF | ./hppa-
-qtest stdio -accel qtest
writew 0xf8118001 0x105a
readq 0xf900f8ff
EOF
=======
==20118==ERROR: AddressSanitizer: SEGV on unknown address 0x7fc6fb847672 (pc 0x55ec9c0f6828 bp 0x7ffd91000230 sp 0x7ffd90ffffd0 T0)
==20118==The signal is caused by a READ memory access.
#0 0x55ec9c0f6828 in artist_vram_read /hw/display/
#1 0x55ec9b84a582 in memory_
#2 0x55ec9b7d1adc in access_
#3 0x55ec9b7cd769 in memory_
#4 0x55ec9b7cc855 in memory_
#5 0x55ec9ae621de in flatview_
#6 0x55ec9ae64fb1 in flatview_read /exec.c:3279:12
#7 0x55ec9ae64af7 in address_
#8 0x55ec9b87c990 in address_space_read /include/
#9 0x55ec9b87c990 in qtest_process_
#10 0x55ec9b870c08 in qtest_process_inbuf /softmmu/
#11 0x55ec9b86f895 in qtest_read /softmmu/
#12 0x55ec9dd2b2f3 in qemu_chr_
#13 0x55ec9dd2b477 in qemu_chr_be_write /chardev/
#14 0x55ec9dd3f763 in fd_chr_read /chardev/
#15 0x55ec9de93b24 in qio_channel_
#16 0x7fc7261ad897 in g_main_
#17 0x55ec9e28ba2b in glib_pollfds_poll /util/main-
#18 0x55ec9e28915b in os_host_
#19 0x55ec9e288af4 in main_loop_wait /util/main-
#20 0x55ec9b891d00 in qemu_main_loop /softmmu/
#21 0x55ec9decb911 in main /softmmu/
The error occurs even with Message-Id: <email address hidden> applied (I collected the above trace with the patch-set applied)
Thanks
-Alex
Changed in qemu: | |
assignee: | nobody → Helge Deller (hdeller) |
There's one more slightly further in the same function - line 1231 https:/ /github. com/hdeller/ qemu-hppa/ blob/1e5391948f 977932d17526c49 1d262a3cd99a690 /hw/display/ artist. c#L1231
cat << EOF | ./hppa- softmmu/ qemu-system- hppa -m 64 -display none \
-qtest stdio -accel qtest
writeq 0xf8118005 0x1e7c50ff016d65ff
readl 0xf9080100
EOF
[I 1596601465.827371] OPENED 5.870899: artist_ reg_write 1 0x118005 DST_BM_ACCESS <- 0x1e 5.870911: artist_ reg_write 2 0x118006 DST_BM_ACCESS <- 0x7c50 5.870918: artist_ reg_write 4 0x118008 SRC_BM_ACCESS <- 0xff016d65 5.870924: artist_ reg_write 1 0x11800c CONTROL_PLANE <- 0xff r:DEADLYSIGNAL ======= ======= ======= ======= ======= ======= ======= ======= == Development/ qemu/general- fuzz/hw/ display/ artist. c:1231: 23 region_ read_accessor /home/alxndr/ Development/ qemu/general- fuzz/softmmu/ memory. c:434:11
[R +0.043473] writeq 0xf8118005 0x1e7c50ff016d65ff
18615@159660146
18615@159660146
18615@159660146
18615@159660146
OK
[S +0.043557] OK
[R +0.043574] readl 0xf9080100
AddressSanitize
=======
==18615==ERROR: AddressSanitizer: SEGV on unknown address 0x7f12d2a01040 (pc 0x560323116048 bp 0x7fffa8723bf0 sp 0x7fffa8723990 T0)
==18615==The signal is caused by a READ memory access.
#0 0x560323116048 in artist_vram_read /home/alxndr/
#1 0x560322868582 in memory_
...