Patch has been included here:
https://git.qemu.org/?p=qemu.git;a=commitdiff;h=7174970a94df10ee84143
** Changed in: qemu
Status: New => Fix Released
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1701808
Title:
stack smashing in or after recvmsg system call in aarch64 user mode
Status in QEMU:
Fix Released
Bug description:
A program that invokes recvmsg aborts with "*** stack smashing
detected ***" when run in qemu-aarch64 (user mode), but works fine
when running on native aarch64 hardware.
How to reproduce:
$ aarch64-linux-gnu-gcc-5 -O -Wall
/media/develdata/devel/qemu-bug/testpassfd.c -static -DEXTRA_SPACE=0
$ QEMU_LD_PREFIX=/usr/aarch64-linux-gnu ~/inst-qemu/2.9.0/bin/qemu-aarch64
./a.out
*** stack smashing detected ***: ./a.out terminated
qemu: uncaught target signal 6 (Aborted) - core dumped
On native aarch64 hardware:
$ ./a.out
$ echo $?
0
The parameter EXTRA_SPACE can be used to add additional space to the
array that receives the recvmsg data. With -DEXTRA_SPACE=9 (or
larger), the program runs fine. Which suggests that recvmsg is storing
up to 9 bytes more than allowed in memory.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1701808/+subscriptions
