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| author | Stefan Liebler <stli@linux.ibm.com> | 2024-02-22 15:03:27 +0100 |
|---|---|---|
| committer | Stefan Liebler <stli@linux.ibm.com> | 2024-02-27 11:05:29 +0100 |
| commit | 9a1bdd7df731a4bc60f72dbdc1b849e02cfa9c34 (patch) | |
| tree | 74d1c7ab6a478e8c62a2ba6a44eba21e0ad4796f /sysdeps/unix/sysv/linux/s390/s390-64/clone.S | |
| parent | 23021eda75eee44b4b2ae350e63dc404dac6407d (diff) | |
| download | glibc-9a1bdd7df731a4bc60f72dbdc1b849e02cfa9c34.tar glibc-9a1bdd7df731a4bc60f72dbdc1b849e02cfa9c34.tar.gz glibc-9a1bdd7df731a4bc60f72dbdc1b849e02cfa9c34.tar.bz2 glibc-9a1bdd7df731a4bc60f72dbdc1b849e02cfa9c34.zip | |
S390: Do not clobber r7 in clone [BZ #31402]release/2.37/master
Starting with commit e57d8fc97b90127de4ed3e3a9cdf663667580935
"S390: Always use svc 0"
clone clobbers the call-saved register r7 in error case:
function or stack is NULL.
This patch restores the saved registers also in the error case.
Furthermore the existing test misc/tst-clone is extended to check
all error cases and that clone does not clobber registers in this
error case.
(cherry picked from commit 02782fd12849b6673cb5c2728cb750e8ec295aa3)
Note: Added ia64 __clone2 call to tst-clone.c.
Diffstat (limited to 'sysdeps/unix/sysv/linux/s390/s390-64/clone.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-64/clone.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/clone.S b/sysdeps/unix/sysv/linux/s390/s390-64/clone.S index f1c4288a3d..7b37b18010 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-64/clone.S +++ b/sysdeps/unix/sysv/linux/s390/s390-64/clone.S @@ -54,6 +54,7 @@ ENTRY(__clone) br %r14 error: lghi %r2,-EINVAL + lmg %r6,%r7,48(%r15) /* Restore registers. */ jg SYSCALL_ERROR_LABEL PSEUDO_END (__clone) |