diff options
Diffstat (limited to 'results/scraper/launchpad-without-comments/1708442')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1708442 | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1708442 b/results/scraper/launchpad-without-comments/1708442 new file mode 100644 index 00000000..3ec4e0b7 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1708442 @@ -0,0 +1,76 @@ +Crash(assert) during reading image from http url through qemu-nbd + +Description: +During reading image from nbd device mounted by qemu-nbd server with url backend I/O error happens +"blk_update_request: I/O error, dev nbd0, sector 42117" dmesg. After some investigation I found that qemu-nbd server aborts in aio_co_enter() assert in util/async.c:468. + + +Steps to reproduce: + +1) sudo go run qemu-nbd-bug-report/qemu-nbd-bug.go (see qemu-nbd-bug-report.tar.gz) + +or try directly + +1) qemu-nbd -c /dev/nbd0 -r -v --aio=native -f qcow2 json:{"file.driver":"http","file.url":"http://localhost:9666/image","file.readahead":3276800 +2) try read whole nbd device while error in dmesg appears x + +Versions: + +1) qemu built from sources(/configure --target-list=x86_64-softmmu --disable-user --enable-curl --enable-linux-aio --enable-virtfs --enable-debug --disable-pie +, top commit 5619c179057e24195ff19c8fe6d6a6cbcb16ed28): + +qemu-nbd -v +qemu-nbd 2.9.90 (v2.10.0-rc0-67-g5619c17) + +2) libcurl(built from sources, top commit 1767adf4399bb3be29121435e1bb1cc2bc05f7bf): + +curl -V +curl 7.55.0-DEV (Linux) libcurl/7.55.0-DEV OpenSSL/1.0.2g zlib/1.2.8 + + +Backtrace: +(gdb) bt +#0 0x00007f7131426428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54 +#1 0x00007f713142802a in __GI_abort () at abort.c:89 +#2 0x00007f713141ebd7 in __assert_fail_base (fmt=<optimized out>, assertion=assertion@entry=0x54c924 "self != co", + file=file@entry=0x54c871 "util/async.c", line=line@entry=468, + function=function@entry=0x54c980 <__PRETTY_FUNCTION__.24766> "aio_co_enter") at assert.c:92 +#3 0x00007f713141ec82 in __GI___assert_fail (assertion=0x54c924 "self != co", file=0x54c871 "util/async.c", line=468, + function=0x54c980 <__PRETTY_FUNCTION__.24766> "aio_co_enter") at assert.c:101 +#4 0x00000000004fe6a2 in aio_co_enter (ctx=0xf0ddb0, co=0xf14650) at util/async.c:468 +#5 0x00000000004fe637 in aio_co_wake (co=0xf14650) at util/async.c:456 +#6 0x0000000000495c8a in curl_read_cb (ptr=0xf566d9, size=1, nmemb=16135, opaque=0xf1cb90) at block/curl.c:275 +#7 0x00007f713242ac24 in Curl_client_chop_write () from /usr/lib/x86_64-linux-gnu/libcurl.so +#8 0x00007f713242ae03 in Curl_client_write () from /usr/lib/x86_64-linux-gnu/libcurl.so +#9 0x00007f713244e1cf in readwrite_data () from /usr/lib/x86_64-linux-gnu/libcurl.so +#10 0x00007f713244eb6f in Curl_readwrite () from /usr/lib/x86_64-linux-gnu/libcurl.so +#11 0x00007f713245c1bb in multi_runsingle () from /usr/lib/x86_64-linux-gnu/libcurl.so +#12 0x00007f713245d819 in multi_socket () from /usr/lib/x86_64-linux-gnu/libcurl.so +#13 0x00007f713245e067 in curl_multi_socket_action () from /usr/lib/x86_64-linux-gnu/libcurl.so +#14 0x0000000000497555 in curl_setup_preadv (bs=0xf16820, acb=0x7f712d379860) at block/curl.c:918 +#15 0x00000000004975fb in curl_co_preadv (bs=0xf16820, offset=6556160, bytes=512, qiov=0x7f712d379b40, flags=0) at block/curl.c:935 +#16 0x000000000047730f in bdrv_driver_preadv (bs=0xf16820, offset=6556160, bytes=512, qiov=0x7f712d379b40, flags=0) at block/io.c:836 +#17 0x0000000000477c1f in bdrv_aligned_preadv (child=0xf1be20, req=0x7f712d379a60, offset=6556160, bytes=512, align=1, + qiov=0x7f712d379b40, flags=0) at block/io.c:1086 +#18 0x0000000000478109 in bdrv_co_preadv (child=0xf1be20, offset=6556160, bytes=512, qiov=0x7f712d379b40, flags=0) at block/io.c:1180 +#19 0x0000000000437498 in qcow2_co_preadv (bs=0xf0fdc0, offset=21563904, bytes=512, qiov=0x7f712d379e80, flags=0) + at block/qcow2.c:1812 +#20 0x000000000047730f in bdrv_driver_preadv (bs=0xf0fdc0, offset=21563904, bytes=512, qiov=0x7f712d379e80, flags=0) + at block/io.c:836 +#21 0x0000000000477c1f in bdrv_aligned_preadv (child=0xf1c0d0, req=0x7f712d379d30, offset=21563904, bytes=512, align=1, + qiov=0x7f712d379e80, flags=0) at block/io.c:1086 +#22 0x0000000000478109 in bdrv_co_preadv (child=0xf1c0d0, offset=21563904, bytes=512, qiov=0x7f712d379e80, flags=0) + at block/io.c:1180 +#23 0x00000000004645ad in blk_co_preadv (blk=0xf1be90, offset=21563904, bytes=512, qiov=0x7f712d379e80, flags=0) + at block/block-backend.c:991 +#24 0x00000000004646fa in blk_read_entry (opaque=0x7f712d379ea0) at block/block-backend.c:1038 +#25 0x000000000046481c in blk_prw (blk=0xf1be90, offset=21563904, +---Type <return> to continue, or q <return> to quit--- + buf=0xf7f000 "2,NV\241t!\ti\312\vp\364\017Kl*\354\021\a\177\021\260\b\027\212\347\027\004\322\nG\340b\\\306pG\332\313\060\341;\002\360\063L\240\027T \211\341\305\022АE\230\356DǮ}\211\bx\016\a\b\313\350\316\064.\017\372\032-R\376z\261\263\350|cQ<\016S_L\340A\221\366~L#\001+\271\204\065~\327\023\027I\211\343\361\276zT$4\336\273ˏ\353ʪ\234\016_Z|TMk\"\370\002\363~\334\332.\a\375\265mӌ{/%\304֎\374sF<E\371\031o&\202\217\226\276>I\356\302\375F\340\332\324\021\202\232>\026\261\233\303tv\023\304\006\243\037\062BϏ\b\324rs\360'"..., bytes=512, co_entry=0x4646aa <blk_read_entry>, flags=0) at block/block-backend.c:1074 +#26 0x0000000000464f81 in blk_pread (blk=0xf1be90, offset=21563904, buf=0xf7f000, count=512) at block/block-backend.c:1227 +#27 0x00000000004906cb in nbd_trip (opaque=0xf5a940) at nbd/server.c:1380 +#28 0x000000000051c0a5 in coroutine_trampoline (i0=15812176, i1=0) at util/coroutine-ucontext.c:79 +#29 0x00007f713143b5d0 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 +#30 0x00007f712d47a770 in ?? () +#31 0x0000000000000000 in ?? () +Backtrace stopped: Cannot access memory at address 0x7f712d37a000 \ No newline at end of file |