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Diffstat (limited to 'results/scraper/launchpad-without-comments/1878054')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1878054 | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1878054 b/results/scraper/launchpad-without-comments/1878054 new file mode 100644 index 000000000..6c79c8dc7 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1878054 @@ -0,0 +1,39 @@ +Hang with high CPU usage in sdhci_data_transfer + +Hello, +While fuzzing, I found an input that causes QEMU to hang with 100% CPU usage. +I have waited several minutes, and QEMU is still unresponsive. Using gdb, It +appears that it is stuck in an sdhci_data_transfer: + +#0 memory_region_access_valid (mr=<optimized out>, addr=0x10284920, size=<optimized out>, is_write=0xff, attrs=...) at /home/alxndr/Development/qemu/memory.c:1378 +#1 memory_region_dispatch_write (mr=<optimized out>, addr=<optimized out>, data=<optimized out>, op=MO_32, attrs=...) at /home/alxndr/Development/qemu/memory.c:1463 +#2 flatview_write_continue (fv=<optimized out>, addr=0x10284920, attrs=..., ptr=<optimized out>, len=0xb7, addr1=0x5555582798e0, l=<optimized out>, mr=0x5555582798e0 <io_mem_unassigned>) at /home/alxndr/Development/qemu/exec.c:3137 +#3 flatview_write (fv=0x606000045da0, addr=<optimized out>, attrs=..., buf=<optimized out>, len=<optimized out>) at /home/alxndr/Development/qemu/exec.c:3177 +#4 address_space_write (as=<optimized out>, addr=<optimized out>, attrs=..., buf=0xaaaab04f325, len=0x4) at /home/alxndr/Development/qemu/exec.c:3268 +#5 address_space_rw (as=0x5555572509ac <unassigned_mem_ops+44>, addr=0x5555582798e0, attrs=..., attrs@entry=..., buf=0xaaaab04f325, len=0x4, is_write=0xb8, is_write@entry=0x1) at +/home/alxndr/Development/qemu/exec.c:3278 +#6 dma_memory_rw_relaxed (as=0x5555572509ac <unassigned_mem_ops+44>, addr=0x5555582798e0, buf=0xaaaab04f325, len=0x4, dir=DMA_DIRECTION_FROM_DEVICE) at /home/alxndr/Development/qemu/include/sysemu/dma.h:87 +#7 dma_memory_rw (as=0x5555572509ac <unassigned_mem_ops+44>, addr=0x5555582798e0, buf=0xaaaab04f325, len=0x4, dir=DMA_DIRECTION_FROM_DEVICE) at /home/alxndr/Development/qemu/include/sysemu/dma.h:110 +#8 dma_memory_write (as=0x5555572509ac <unassigned_mem_ops+44>, addr=0x5555582798e0, buf=0xaaaab04f325, len=0x4) at /home/alxndr/Development/qemu/include/sysemu/dma.h:122 +#9 sdhci_sdma_transfer_multi_blocks (s=<optimized out>) at /home/alxndr/Development/qemu/hw/sd/sdhci.c:618 +#10 sdhci_data_transfer (opaque=0x61e000021080) at /home/alxndr/Development/qemu/hw/sd/sdhci.c:891 +#11 sdhci_send_command (s=0x61e000021080) at /home/alxndr/Development/qemu/hw/sd/sdhci.c:364 +#12 sdhci_write (opaque=<optimized out>, offset=0xc, val=<optimized out>, size=<optimized out>) at /home/alxndr/Development/qemu/hw/sd/sdhci.c:1158 +#13 memory_region_write_accessor (mr=<optimized out>, addr=<optimized out>, value=<optimized out>, size=<optimized out>, shift=<optimized out>, mask=<optimized out>, attrs=...) at +/home/alxndr/Development/qemu/memory.c:483 +#14 access_with_adjusted_size (addr=<optimized out>, value=<optimized out>, size=<optimized out>, access_size_min=<optimized out>, access_size_max=<optimized out>, access_fn=<optimized out>, mr=0x61e0000219f0, attrs=...) at /home/alxndr/Development/qemu/memory.c:544 +#15 memory_region_dispatch_write (mr=<optimized out>, addr=<optimized out>, data=0x1ffe0ff, op=<optimized out>, attrs=...) at /home/alxndr/Development/qemu/memory.c:1476 +#16 flatview_write_continue (fv=<optimized out>, addr=0xe106800c, attrs=..., ptr=<optimized out>, len=0xff3, addr1=0x5555582798e0, l=<optimized out>, mr=0x61e0000219f0) at /home/alxndr/Development/qemu/exec.c:3137 +#17 flatview_write (fv=0x606000045da0, addr=<optimized out>, attrs=..., buf=<optimized out>, len=<optimized out>) at /home/alxndr/Development/qemu/exec.c:3177 +#18 address_space_write (as=<optimized out>, addr=<optimized out>, attrs=..., attrs@entry=..., buf=0xaaaab04f325, buf@entry=0x62100008ad00, len=0x4) at /home/alxndr/Development/qemu/exec.c:3268 +#19 qtest_process_command (chr=<optimized out>, chr@entry=0x55555827c040 <qtest_chr>, words=<optimized out>) at /home/alxndr/Development/qemu/qtest.c:567 +#20 qtest_process_inbuf (chr=0x55555827c040 <qtest_chr>, inbuf=0x61900000f640) at /home/alxndr/Development/qemu/qtest.c:710 + + +I am attaching the qtest commands for reproducing it. +I can reproduce it in a qemu 5.0 build using: + +qemu-system-i386 -M pc-q35-5.0 -qtest stdio -device sdhci-pci,sd-spec-version=3 -device sd-card,drive=mydrive -drive if=sd,index=0,file=null-co://,format=raw,id=mydrive -nographic -nographic -serial none -monitor none < attachment + +Please let me know if I can provide any further info. +-Alex \ No newline at end of file |