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Merge branch 'parisc-5.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

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Pull parisc fixes from Helge Deller:
 "Fix ptrace syscall number modification which has been broken since
  kernel v4.5 and provide alternative email addresses for the remaining
  users of the retired parisc-linux.org email domain"

* 'parisc-5.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  CREDITS/MAINTAINERS: Retire parisc-linux.org email domain
  parisc: Fix ptrace syscall number modification
This commit is contained in:
Linus Torvalds 2019-02-22 16:12:01 -08:00
commit 8456e98e18
3 changed files with 32 additions and 22 deletions
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20
CREDITS
View File

@ -842,10 +842,9 @@ D: ax25-utils maintainer.
N: Helge Deller
E: deller@gmx.de
E: hdeller@redhat.de
D: PA-RISC Linux hacker, LASI-, ASP-, WAX-, LCD/LED-driver
S: Schimmelsrain 1
S: D-69231 Rauenberg
W: http://www.parisc-linux.org/
D: PA-RISC Linux architecture maintainer
D: LASI-, ASP-, WAX-, LCD/LED-driver
S: Germany
N: Jean Delvare
@ -1361,7 +1360,7 @@ S: Stellenbosch, Western Cape
S: South Africa
N: Grant Grundler
E: grundler@parisc-linux.org
E: grantgrundler@gmail.com
W: http://obmouse.sourceforge.net/
W: http://www.parisc-linux.org/
D: obmouse - rewrote Olivier Florent's Omnibook 600 "pop-up" mouse driver
@ -2492,7 +2491,7 @@ S: Syracuse, New York 13206
S: USA
N: Kyle McMartin
E: kyle@parisc-linux.org
E: kyle@mcmartin.ca
D: Linux/PARISC hacker
D: AD1889 sound driver
S: Ottawa, Canada
@ -3780,14 +3779,13 @@ S: 21513 Conradia Ct
S: Cupertino, CA 95014
S: USA
N: Thibaut Varene
E: T-Bone@parisc-linux.org
W: http://www.parisc-linux.org/~varenet/
P: 1024D/B7D2F063 E67C 0D43 A75E 12A5 BB1C FA2F 1E32 C3DA B7D2 F063
N: Thibaut Varène
E: hacks+kernel@slashdirt.org
W: http://hacks.slashdirt.org/
D: PA-RISC port minion, PDC and GSCPS2 drivers, debuglocks and other bits
D: Some ARM at91rm9200 bits, S1D13XXX FB driver, random patches here and there
D: AD1889 sound driver
S: Paris, France
S: France
N: Heikki Vatiainen
E: hessu@cs.tut.fi

5
MAINTAINERS
View File

@ -409,8 +409,7 @@ F: drivers/platform/x86/wmi.c
F: include/uapi/linux/wmi.h
AD1889 ALSA SOUND DRIVER
M: Thibaut Varene <T-Bone@parisc-linux.org>
W: http://wiki.parisc-linux.org/AD1889
W: https://parisc.wiki.kernel.org/index.php/AD1889
L: linux-parisc@vger.kernel.org
S: Maintained
F: sound/pci/ad1889.*
@ -11488,7 +11487,7 @@ F: Documentation/blockdev/paride.txt
F: drivers/block/paride/
PARISC ARCHITECTURE
M: "James E.J. Bottomley" <jejb@parisc-linux.org>
M: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
M: Helge Deller <deller@gmx.de>
L: linux-parisc@vger.kernel.org
W: http://www.parisc-linux.org/

29
arch/parisc/kernel/ptrace.c
View File

@ -308,15 +308,29 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
long do_syscall_trace_enter(struct pt_regs *regs)
{
if (test_thread_flag(TIF_SYSCALL_TRACE) &&
tracehook_report_syscall_entry(regs)) {
if (test_thread_flag(TIF_SYSCALL_TRACE)) {
int rc = tracehook_report_syscall_entry(regs);
/*
* Tracing decided this syscall should not happen or the
* debugger stored an invalid system call number. Skip
* the system call and the system call restart handling.
* As tracesys_next does not set %r28 to -ENOSYS
* when %r20 is set to -1, initialize it here.
*/
regs->gr[20] = -1UL;
goto out;
regs->gr[28] = -ENOSYS;
if (rc) {
/*
* A nonzero return code from
* tracehook_report_syscall_entry() tells us
* to prevent the syscall execution. Skip
* the syscall call and the syscall restart handling.
*
* Note that the tracer may also just change
* regs->gr[20] to an invalid syscall number,
* that is handled by tracesys_next.
*/
regs->gr[20] = -1UL;
return -1;
}
}
/* Do the secure computing check after ptrace. */
@ -340,7 +354,6 @@ long do_syscall_trace_enter(struct pt_regs *regs)
regs->gr[24] & 0xffffffff,
regs->gr[23] & 0xffffffff);
out:
/*
* Sign extend the syscall number to 64bit since it may have been
* modified by a compat ptrace call