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authorChristian Krinitsin <mail@krinitsin.com>2025-07-03 16:27:09 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-07-03 16:27:09 +0000
commit4d9e26c0333abd39bdbd039dcdb30ed429c475ba (patch)
tree4010d5fb3e8bc48c110a2c1ff2a16b8648cb86bb /results/classifier/accel-gemma3:12b/kvm/1240669
parent5541099586dbd6018574cb44e1934907c121526f (diff)
downloademulator-bug-study-4d9e26c0333abd39bdbd039dcdb30ed429c475ba.tar.gz
emulator-bug-study-4d9e26c0333abd39bdbd039dcdb30ed429c475ba.zip
add gemma accelerator classification results
Diffstat (limited to 'results/classifier/accel-gemma3:12b/kvm/1240669')
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diff --git a/results/classifier/accel-gemma3:12b/kvm/1240669 b/results/classifier/accel-gemma3:12b/kvm/1240669
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+
+sd_init() generates SIGSEGV when passed NULL
+
+Ran into a bug following the following tutorial:
+http://balau82.wordpress.com/2010/03/10/u-boot-for-arm-on-qemu/
+
+I built QEMU from a clone of master and became stuck at the beginning part of the tutorial where only u-boot.bin is exectuted.
+
+http://git.qemu.org/?p=qemu.git;a=commitdiff;h=4f8a066b5fc254eeaabbbde56ba4f5b29cc68fdf
+See the modifications to sd.c specifically.
+
+When sd_init (sd.c) is called from pl181_init(), bs is potentially null:
+s->card = sd_init(dinfo ? dinfo->bdrv : NULL, false);
+
+sd_init() :
+SDState *sd_init(BlockDriverState *bs, bool is_spi)
+{
+ SDState *sd;
+
+ sd = (SDState *) g_malloc0(sizeof(SDState));
+ sd->buf = qemu_blockalign(bs, 512);
+ sd->spi = is_spi;
+ sd->enable = true;
+ sd_reset(sd, bs);
+ if (sd->bdrv) {
+ bdrv_attach_dev_nofail(sd->bdrv, sd);
+ bdrv_set_dev_ops(sd->bdrv, &sd_block_ops, sd);
+ }
+ vmstate_register(NULL, -1, &sd_vmstate, sd);
+ return sd;
+}
+
+Line 497 calls bdrv_is_read_only(bs) (from block.c)and this generates a SEGSIGV.
+
+int bdrv_is_read_only(BlockDriverState *bs)
+{
+ return bs->read_only;
+}
+
+Checking out tag v1.6.1 reverted the problem. Thanks! \ No newline at end of file