Fix has been included here:
https://git.qemu.org/?p=qemu.git;a=commitdiff;h=09b94ac0f29db3b022a77
** Changed in: qemu
Status: Confirmed => Fix Released
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Glad to see such a quick fix, and ASAN looks like a great tool :)
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https://bugs.launchpad.net/bugs/1785670
Title:
Guest(ubuntu 18.04) crashes when trying uploading file
Status in
http://patchwork.ozlabs.org/patch/954491/ is a patch which should fix
this crash.
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https://bugs.launchpad.net/bugs/1785670
Title:
Guest(ubuntu 18.04) crashes when trying uploading
For me:
c22098c74a fails
864036e251 fails
3835c310bd doesn't crash, but sometimes the outbound connection hangs.
So perhaps the crash is 864036e251f54c99d31df124aad7f34f01f5344c
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Hi,
I have find the overflow point using ASAN.
void
m_cat(struct mbuf *m, struct mbuf *n)
{
/*
* If there's no room, realloc
*/
if (M_FREEROOM(m) < n->m_len)
m_inc(m, m->m_len + n->m_len);
memcpy(m->m_data+m->m_len, n->m_data, n->m_len);
m->m_len += n->m_len;
m_free(n);
}
/*
372e0 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x202e0)
2018-08-07
liqsub1
发件人：Zihan Yang <1785...@bugs.launchpad.net>
发送时间：2018-08-07 09:06
主题：[Qemu-devel] [Bug 1785670] Re: Guest(ubuntu 18.04) crashes when trying
uploading file
收件人："qemu-devel"
抄送：
It's indeed
It's indeed e1000e specific, when I change e1000e to e1000, I can upload
file freely. Looks like there is an overflow somewhere in e1000e that
corrupted the heap chunk header.
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Looks like it might be e1000e specific?
I can recreate it with either q35 with no extra options (it has e1000e by
default), pc or q35 specifying e1000e, but plain pc works fine.
Simple test; scp bigfile from guest to user@10.0.2.2: (i.e. host)
Dave
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#0 0x7fffec275feb in raise () at /lib64/libc.so.6
#1 0x7fffec2605c1 in abort () at /lib64/libc.so.6
#2 0x7fffec2b89d7 in __libc_message () at /lib64/libc.so.6
#3 0x7fffec2beeac in () at /lib64/libc.so.6
#4 0x7fffec2c091c in _int_free () at /lib64/libc.so.6
#5
I can recreate this here.
** Changed in: qemu
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1785670
Title:
Guest(ubuntu 18.04) crashes when trying uploading file
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