diff options
| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2022-09-20 13:39:07 +0200 |
|---|---|---|
| committer | Thomas Huth <thuth@redhat.com> | 2022-09-23 15:16:16 +0200 |
| commit | ab9ccfa8502435502c74fc55cec8ae6eda879919 (patch) | |
| tree | db4dcaac360c6cf17819f80f5dd3c7103aaf66f4 /linux-user | |
| parent | 131aafa7eff4aa4d747cb7113726b27394a38866 (diff) | |
linux-user/host/s390: Add vector instructions to host_signal_write()
The new noexec test fails on s390x with "unexpected SEGV". This test
overwrites code using libc's memcpy(), which uses VSTL instruction.
host_signal_write() does not recognize it, which causes SEGV to be
incorrectly forwarded to the test.
Add all vector instructions that write to memory to
host_signal_write().
Fixes: ab12c95d3f19 ("target/s390x: Make translator stop before the end of a page")
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20220920113907.334144-1-iii@linux.ibm.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/include/host/s390/host-signal.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/linux-user/include/host/s390/host-signal.h b/linux-user/include/host/s390/host-signal.h index 25fefa00bd..e6d3ec26dc 100644 --- a/linux-user/include/host/s390/host-signal.h +++ b/linux-user/include/host/s390/host-signal.h @@ -87,6 +87,31 @@ static inline bool host_signal_write(siginfo_t *info, host_sigcontext *uc) return true; } break; + case 0xe6: + switch (pinsn[2] & 0xff) { + case 0x09: /* VSTEBRH */ + case 0x0a: /* VSTEBRG */ + case 0x0b: /* VSTEBRF */ + case 0x0e: /* VSTBR */ + case 0x0f: /* VSTER */ + case 0x3f: /* VSTRLR */ + return true; + } + break; + case 0xe7: + switch (pinsn[2] & 0xff) { + case 0x08: /* VSTEB */ + case 0x09: /* VSTEH */ + case 0x0a: /* VSTEG */ + case 0x0b: /* VSTEF */ + case 0x0e: /* VST */ + case 0x1a: /* VSCEG */ + case 0x1b: /* VSCEF */ + case 0x3e: /* VSTM */ + case 0x3f: /* VSTL */ + return true; + } + break; case 0xeb: /* RSY format insns */ switch (pinsn[2] & 0xff) { case 0x14: /* CSY */ |