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| author | Christian Borntraeger <cborntra@de.ibm.com> | 2006-10-11 17:31:52 +0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-10-11 17:31:52 +0400 |
| commit | 75e9de18f079a51fa987ef0703112d5bc125fdb7 (patch) | |
| tree | e9bdf9972851d7de6a8b5392bd4666f6fa96046d /drivers/pci/syscall.c | |
| parent | 12975aef62836e9f3e179afaaded8045f8a25ac4 (diff) | |
| download | linux-75e9de18f079a51fa987ef0703112d5bc125fdb7.tar.xz | |
[S390] stacktrace bug.
The latest kernel 2.6.19-rc1 triggers a bug in the s390 specific stack
trace code when compiled with gcc 3.4.
This patch fixes the latest lock dependency validator code (2.6.19-rc1)
on s390 gcc 3.4. The variable sp was fixed to r15 (which is the stack
pointer in the s390 abi) and assigned new values to r15. Therefore,
gcc 3.4 assigns a new value to r15 and does not restore it on exit (r15
is supposed to be call save) - the kernel stack is broken. Avoid trouble
by not assigning any new value to sp (r15).
Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/pci/syscall.c')
0 files changed, 0 insertions, 0 deletions