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[Qemu-devel] [Bug 1728639] Re: qemu-io crashes with SIGSEGV when did -c
From: |
Thomas Huth |
Subject: |
[Qemu-devel] [Bug 1728639] Re: qemu-io crashes with SIGSEGV when did -c truncate 320000 on a image_fuzzer image |
Date: |
Fri, 15 Dec 2017 15:46:19 -0000 |
Fix has been released with QEMU 2.11:
https://git.qemu.org/?p=qemu.git;a=commitdiff;h=791fff504cad4d935df
** Changed in: qemu
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1728639
Title:
qemu-io crashes with SIGSEGV when did -c truncate 320000 on a
image_fuzzer image
Status in QEMU:
Fix Released
Bug description:
git is at HEAD a93ece47fd9edbd4558db24300056c9a57d3bcd4
This is on ppc64le architecture.
Re-production steps:
1. Copy the attached files named test.img to a directory
2. And customize the following command to point to the above directory and
run the same.
# mv test.img copy.img
# qemu-io <path to>/copy.img -c "truncate 320000"
from gdb:
Program terminated with signal 11, Segmentation fault.
#0 0x000000001000e444 in refresh_total_sectors (bs=0x1fe86f60, hint=11648)
at block.c:723
723 if (drv->bdrv_getlength) {
Missing separate debuginfos, use: debuginfo-install
cyrus-sasl-lib-2.1.26-21.el7.ppc64le glib2-2.50.3-3.el7.ppc64le
glibc-2.17-196.el7.ppc64le gmp-6.0.0-15.el7.ppc64le gnutls-3.3.26-9.el7.ppc64le
keyutils-libs-1.5.8-3.el7.ppc64le krb5-libs-1.15.1-8.el7.ppc64le
libaio-0.3.109-13.el7.ppc64le libcom_err-1.42.9-10.el7.ppc64le
libcurl-7.29.0-42.el7.ppc64le libffi-3.0.13-18.el7.ppc64le
libgcc-4.8.5-16.el7_4.1.ppc64le libidn-1.28-4.el7.ppc64le
libselinux-2.5-11.el7.ppc64le libssh2-1.4.3-10.el7_2.1.ppc64le
libstdc++-4.8.5-16.el7_4.1.ppc64le libtasn1-4.10-1.el7.ppc64le
nettle-2.7.1-8.el7.ppc64le nspr-4.13.1-1.0.el7_3.ppc64le
nss-3.28.4-15.el7_4.ppc64le nss-softokn-freebl-3.28.3-8.el7_4.ppc64le
nss-util-3.28.4-3.el7.ppc64le openldap-2.4.44-5.el7.ppc64le
openssl-libs-1.0.2k-8.el7.ppc64le p11-kit-0.23.5-3.el7.ppc64le
pcre-8.32-17.el7.ppc64le zlib-1.2.7-17.el7.ppc64le
(gdb) bt
#0 0x000000001000e444 in refresh_total_sectors (bs=0x1fe86f60, hint=11648)
at block.c:723
#1 0x000000001000fa10 in bdrv_open_driver (bs=0x1fe86f60, drv=0x102036f0
<bdrv_qcow2>, node_name=0x0, options=0x1fe8c240, open_flags=24578,
errp=0x3fffea0fc920) at block.c:1153
#2 0x0000000010010480 in bdrv_open_common (bs=0x1fe86f60, file=0x1fe92540,
options=0x1fe8c240, errp=0x3fffea0fc920) at block.c:1395
#3 0x0000000010013ac8 in bdrv_open_inherit (filename=0x3fffea0ff661
"copy.img", reference=0x0, options=0x1fe8c240, flags=24578, parent=0x0,
child_role=0x0,
errp=0x3fffea0fcae0) at block.c:2616
#4 0x0000000010013e8c in bdrv_open (filename=0x3fffea0ff661 "copy.img",
reference=0x0, options=0x0, flags=16386, errp=0x3fffea0fcae0) at block.c:2698
#5 0x000000001008b6d4 in blk_new_open (filename=0x3fffea0ff661 "copy.img",
reference=0x0, options=0x0, flags=16386, errp=0x3fffea0fcae0)
at block/block-backend.c:321
#6 0x000000001000a6ec in openfile (name=0x3fffea0ff661 "copy.img",
flags=16386, writethrough=true, force_share=false, opts=0x0) at qemu-io.c:81
#7 0x000000001000c040 in main (argc=4, argv=0x3fffea0fd208) at qemu-io.c:624
(gdb) bt full
#0 0x000000001000e444 in refresh_total_sectors (bs=0x1fe86f60, hint=11648)
at block.c:723
drv = 0x0
#1 0x000000001000fa10 in bdrv_open_driver (bs=0x1fe86f60, drv=0x102036f0
<bdrv_qcow2>, node_name=0x0, options=0x1fe8c240, open_flags=24578,
errp=0x3fffea0fc920) at block.c:1153
local_err = 0x0
ret = 0
__PRETTY_FUNCTION__ = "bdrv_open_driver"
__func__ = "bdrv_open_driver"
#2 0x0000000010010480 in bdrv_open_common (bs=0x1fe86f60, file=0x1fe92540,
options=0x1fe8c240, errp=0x3fffea0fc920) at block.c:1395
ret = 16383
open_flags = 24578
filename = 0x1fe8e2b1 "copy.img"
driver_name = 0x1fe54810 "qcow2"
node_name = 0x0
discard = 0x0
detect_zeroes = 0x0
opts = 0x1fe93100
drv = 0x102036f0 <bdrv_qcow2>
local_err = 0x0
__PRETTY_FUNCTION__ = "bdrv_open_common"
__func__ = "bdrv_open_common"
#3 0x0000000010013ac8 in bdrv_open_inherit (filename=0x3fffea0ff661
"copy.img", reference=0x0, options=0x1fe8c240, flags=24578, parent=0x0,
child_role=0x0,
errp=0x3fffea0fcae0) at block.c:2616
ret = 512
file = 0x1fe92540
bs = 0x1fe86f60
drv = 0x102036f0 <bdrv_qcow2>
drvname = 0x0
backing = 0x0
local_err = 0x0
snapshot_options = 0x0
snapshot_flags = 0
__PRETTY_FUNCTION__ = "bdrv_open_inherit"
__func__ = "bdrv_open_inherit"
#4 0x0000000010013e8c in bdrv_open (filename=0x3fffea0ff661 "copy.img",
reference=0x0, options=0x0, flags=16386, errp=0x3fffea0fcae0) at block.c:2698
No locals.
#5 0x000000001008b6d4 in blk_new_open (filename=0x3fffea0ff661 "copy.img",
reference=0x0, options=0x0, flags=16386, errp=0x3fffea0fcae0)
at block/block-backend.c:321
blk = 0x1fe79410
bs = 0x0
perm = 3
#6 0x000000001000a6ec in openfile (name=0x3fffea0ff661 "copy.img",
flags=16386, writethrough=true, force_share=false, opts=0x0) at qemu-io.c:81
local_err = 0x0
#7 0x000000001000c040 in main (argc=4, argv=0x3fffea0fd208) at qemu-io.c:624
readonly = 0
sopt = 0x101b2608 "hVc:d:f:rsnCmkt:T:U"
lopt = {{name = 0x101b26d0 "driver", has_arg = 0, flag = 0x0, val =
104}, {name = 0x101b26d8 "help", has_arg = 0, flag = 0x0, val = 86}, {
name = 0x101b26e0 "version", has_arg = 1, flag = 0x0, val = 99},
{name = 0x101b26e8 "cmd", has_arg = 1, flag = 0x0, val = 102}, {
name = 0x101b26f0 "format", has_arg = 0, flag = 0x0, val = 114},
{name = 0x101b2700 "y", has_arg = 0, flag = 0x0, val = 115}, {
name = 0x101b2710 "", has_arg = 0, flag = 0x0, val = 110}, {name
= 0x101b2718 "nocache", has_arg = 0, flag = 0x0, val = 67}, {
---Type <return> to continue, or q <return> to quit---
name = 0x101b2728 "read", has_arg = 0, flag = 0x0, val = 109},
{name = 0x101b2738 "", has_arg = 0, flag = 0x0, val = 107}, {
name = 0x101b2748 "io", has_arg = 1, flag = 0x0, val = 100},
{name = 0x101b2750 "discard", has_arg = 1, flag = 0x0, val = 116}, {
name = 0x101b2758 "cache", has_arg = 1, flag = 0x0, val = 84},
{name = 0x101b25e8 "object", has_arg = 1, flag = 0x0, val = 256}, {
name = 0x101b2760 "trace", has_arg = 0, flag = 0x0, val = 257},
{name = 0x101b1c48 "force-share", has_arg = 0, flag = 0x0, val = 85}, {name =
0x0,
has_arg = 0, flag = 0x0, val = 0}}
c = -1
opt_index = 0
flags = 16386
writethrough = true
local_error = 0x0
opts = 0x0
format = 0x0
trace_file = 0x0
force_share = false
(gdb)
(gdb) quit
Will attach image_fuzzer image.
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- [Qemu-devel] [Bug 1728639] Re: qemu-io crashes with SIGSEGV when did -c truncate 320000 on a image_fuzzer image,
Thomas Huth <=