I just bisected the same thing down to this commit. It only breaks on
one of my x86 machines though. Namely one with
gcc (SUSE Linux) 4.7.2 20130108 [gcc-4_7-branch revision 195012]
The abort comes from stack protect code:
(gdb) bt
#0 0x00007f4cdf7ff3d5 in raise () from /lib64/libc.so.6
#1 0x00007f4cdf800858 in abort () from /lib64/libc.so.6
#2 0x00007f4ce18f15b9 in helper_ldl_mmu (env=0x7f4cce74f140, addr=2143803008,
mmu_idx=1) at /tmp/qemu_src/include/exec/softmmu_template.h:153
#3 0x00007f4cd71eb335 in ?? ()
#4 0x0000000000000000 in ?? ()
(gdb) up
#1 0x00007f4cdf800858 in abort () from /lib64/libc.so.6
(gdb)
#2 0x00007f4ce18f15b9 in helper_ldl_mmu (env=0x7f4cce74f140, addr=2143803008,
mmu_idx=1) at /tmp/qemu_src/include/exec/softmmu_template.h:153
warning: Source file is more recent than executable.
153 GETPC_EXT());
(gdb) p /x addr
$1 = 0x7fc7d680
(gdb) x /i $pc
=> 0x7f4ce18f15b9 <helper_ldl_mmu+121>:
callq 0x7f4ce16d3550 <__stack_chk_fail@plt>
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https://bugs.launchpad.net/bugs/1218098
Title:
qemu-system-ppc64 segfaults in helper_ldl_mmu
Status in QEMU:
New
Bug description:
Download a Fedora 19 ISO from:
http://mirrors.kernel.org/fedora-secondary/releases/19/Fedora/ppc64/iso/
Compile qemu from git (I'm using 401c227b0a1134245ec61c6c5a9997cfc963c8e4
from today).
Run qemu-system-ppc64 like this:
ppc64-softmmu/qemu-system-ppc64 -M pseries -m 4096 -hda
/dev/fedora/f20ppc64 -cdrom /tmp/Fedora-19-ppc64-DVD.iso -netdev
user,id=usernet,net=169.254.0.0/16 -device virtio-net-
pci,netdev=usernet
Guest gets to yaboot. If you hit return, qemu segfaults:
Program received signal SIGABRT, Aborted.
0x00007ffff041fa19 in __GI_raise (sig=sig@entry=6)
at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56 return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
(gdb) t a a bt
Thread 4 (Thread 0x7fff6eef7700 (LWP 7553)):
#0 sem_timedwait ()
at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S:101
#1 0x00005555559a5897 in qemu_sem_timedwait (sem=sem@entry=0x55555631e788,
ms=ms@entry=10000) at util/qemu-thread-posix.c:238
#2 0x000055555577e54c in worker_thread (opaque=0x55555631e6f0)
at thread-pool.c:97
#3 0x00007ffff625ec53 in start_thread (arg=0x7fff6eef7700)
at pthread_create.c:308
#4 0x00007ffff04df13d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
Thread 3 (Thread 0x7fff6e605700 (LWP 7547)):
#0 0x00007ffff041fa19 in __GI_raise (sig=sig@entry=6)
at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1 0x00007ffff0421128 in __GI_abort () at abort.c:90
#2 0x000055555583ea33 in helper_ldl_mmu (env=0x7ffff7fd7140, addr=1572864,
mmu_idx=1) at /home/rjones/d/qemu/include/exec/softmmu_template.h:153
#3 0x00007fffab0819d8 in code_gen_buffer ()
#4 0x00005555557aa7ae in cpu_tb_exec (tb_ptr=<optimized out>,
cpu=0x7ffff7fd7010) at /home/rjones/d/qemu/cpu-exec.c:56
#5 cpu_ppc_exec (env=env@entry=0x7ffff7fd7140)
at /home/rjones/d/qemu/cpu-exec.c:631
#6 0x00005555557abc35 in tcg_cpu_exec (env=0x7ffff7fd7140)
at /home/rjones/d/qemu/cpus.c:1193
#7 tcg_exec_all () at /home/rjones/d/qemu/cpus.c:1226
#8 qemu_tcg_cpu_thread_fn (arg=<optimized out>)
at /home/rjones/d/qemu/cpus.c:885
#9 0x00007ffff625ec53 in start_thread (arg=0x7fff6e605700)
at pthread_create.c:308
#10 0x00007ffff04df13d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
Thread 1 (Thread 0x7ffff7fa9a40 (LWP 7542)):
#0 0x00007ffff04d4c2f in __GI_ppoll (fds=0x555556483210, nfds=4,
timeout=<optimized out>, timeout@entry=0x7fffffffd940,
sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:56
#1 0x0000555555762db9 in ppoll (__ss=0x0, __timeout=0x7fffffffd940,
__nfds=<optimized out>, __fds=<optimized out>)
at /usr/include/bits/poll2.h:77
#2 qemu_poll_ns (fds=<optimized out>, nfds=<optimized out>,
timeout=timeout@entry=951497) at qemu-timer.c:276
#3 0x000055555572b58c in os_host_main_loop_wait (timeout=951497)
at main-loop.c:228
#4 main_loop_wait (nonblocking=<optimized out>) at main-loop.c:484
#5 0x00005555555ef9d8 in main_loop () at vl.c:2090
#6 main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>)
at vl.c:4435
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