https://bugzilla.kernel.org/show_bug.cgi?id=205183
Daniel Black (dan...@linux.ibm.com) changed:
What |Removed |Added
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CC| |dan...@linux.ibm.com
--- Comment #1 from Daniel Black (dan...@linux.ibm.com) ---
Tom,
Thanks for the bug report. Appreciate it. Feel free to use the
linuxppc-dev@lists.ozlabs.org list.
Reproduced in 5.4.0-rc8
danielgb@talos2:~$ uname -a
Linux talos2 5.4.0-rc8 #5 SMP Mon Nov 18 13:27:11 AEDT 2019 ppc64le ppc64le
ppc64le GNU/Linux
danielgb@talos2:~$ gcc -g -Wall -O stacktest.c
danielgb@talos2:~$ ./a.out 1240000 &
[1] 2944
danielgb@talos2:~$ cat /proc/$(pidof a.out)/maps | grep stack
7fffc62f0000-7fffc6420000 rw-p 00000000 00:00 0
[stack]
danielgb@talos2:~$ kill -USR1 %1
danielgb@talos2:~$ signal delivered, stack base 0x7fffc6420000 top
0x7fffc62f1427 (1240025 used)
[1]+ Done ./a.out 1240000
danielgb@talos2:~$ ./a.out 1241000 &
[1] 2948
danielgb@talos2:~$ kill -USR1 %1
danielgb@talos2:~$
[1]+ Segmentation fault ./a.out 1241000
[ 6415.077590] a.out[2948]: bad frame in setup_rt_frame: 00007fffe4fb0010 nip
000006a185d909fc lr 000077ecda3c04e8
I'll get someone to look at this soon.
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