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| author | Sven Schnelle <svens@linux.ibm.com> | 2020-03-06 13:19:34 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2020-06-16 13:44:04 +0200 |
| commit | 00332c16b1604242a56289ff2b26e283dbad0812 (patch) | |
| tree | d682f83b0b5c125f7fd1f31f3ee87aa6070157ee /arch/s390/kernel/entry.S | |
| parent | cd29fa798001075a554b978df3a64e6656c25794 (diff) | |
| download | linux-00332c16b1604242a56289ff2b26e283dbad0812.tar.gz | |
s390/ptrace: pass invalid syscall numbers to tracing
tracing expects to see invalid syscalls, so pass it through.
The syscall path in entry.S checks the syscall number before
looking up the handler, so it is still safe.
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/entry.S')
| -rw-r--r-- | arch/s390/kernel/entry.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 50ff6dd0f995..496f74d98473 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -401,9 +401,9 @@ ENTRY(system_call) jnz .Lsysc_nr_ok # svc 0: system call number in %r1 llgfr %r1,%r1 # clear high word in r1 + sth %r1,__PT_INT_CODE+2(%r11) cghi %r1,NR_syscalls jnl .Lsysc_nr_ok - sth %r1,__PT_INT_CODE+2(%r11) slag %r8,%r1,3 .Lsysc_nr_ok: xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) |