* [GIT PULL] s390 updates for 5.2-rc4
@ 2019-06-08 11:21 Heiko Carstens
2019-06-08 20:20 ` pr-tracker-bot
0 siblings, 1 reply; 2+ messages in thread
From: Heiko Carstens @ 2019-06-08 11:21 UTC (permalink / raw)
To: Linus Torvalds
Cc: Vasily Gorbik, Christian Borntraeger, linux-kernel, linux-s390
Hello Linus,
please pull two bug fixes for s390.
Thanks,
Heiko
The following changes since commit f2c7c76c5d0a443053e94adb9f0918fa2fb85c3a:
Linux 5.2-rc3 (2019-06-02 13:55:33 -0700)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git tags/s390-5.2-4
for you to fetch changes up to 0ab0d7ac2090eae30f1c0b01ae981bb7a368f598:
s390/unwind: correct stack switching during unwind (2019-06-07 15:20:44 +0200)
----------------------------------------------------------------
s390 updates for 5.2-rc4
- fix stack unwinder: the stack unwinder rework has on off-by-one bug
which prevents following stack backchains over more than one
context (e.g. irq -> process).
- fix address space detection in exception handler: if user space
switches to access register mode, which is not supported anymore,
the exception handler may resolve to the wrong address space.
----------------------------------------------------------------
Gerald Schaefer (1):
s390/mm: fix address space detection in exception handling
Vasily Gorbik (1):
s390/unwind: correct stack switching during unwind
arch/s390/include/asm/stacktrace.h | 2 +-
arch/s390/mm/fault.c | 5 ++++-
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/s390/include/asm/stacktrace.h b/arch/s390/include/asm/stacktrace.h
index 49634bf..0ae4bbf7 100644
--- a/arch/s390/include/asm/stacktrace.h
+++ b/arch/s390/include/asm/stacktrace.h
@@ -30,7 +30,7 @@ static inline bool on_stack(struct stack_info *info,
return false;
if (addr + len < addr)
return false;
- return addr >= info->begin && addr + len < info->end;
+ return addr >= info->begin && addr + len <= info->end;
}
static inline unsigned long get_stack_pointer(struct task_struct *task,
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 91ce03f..df75d57 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -83,7 +83,6 @@ static inline int notify_page_fault(struct pt_regs *regs)
/*
* Find out which address space caused the exception.
- * Access register mode is impossible, ignore space == 3.
*/
static enum fault_type get_fault_type(struct pt_regs *regs)
{
@@ -108,6 +107,10 @@ static enum fault_type get_fault_type(struct pt_regs *regs)
}
return VDSO_FAULT;
}
+ if (trans_exc_code == 1) {
+ /* access register mode, not used in the kernel */
+ return USER_FAULT;
+ }
/* home space exception -> access via kernel ASCE */
return KERNEL_FAULT;
}
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [GIT PULL] s390 updates for 5.2-rc4
2019-06-08 11:21 [GIT PULL] s390 updates for 5.2-rc4 Heiko Carstens
@ 2019-06-08 20:20 ` pr-tracker-bot
0 siblings, 0 replies; 2+ messages in thread
From: pr-tracker-bot @ 2019-06-08 20:20 UTC (permalink / raw)
To: Heiko Carstens
Cc: Linus Torvalds, Vasily Gorbik, Christian Borntraeger,
linux-kernel, linux-s390
The pull request you sent on Sat, 8 Jun 2019 13:21:51 +0200:
> git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git tags/s390-5.2-4
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/3d4645bf7a76886c70a482a1c6742bac98553f47
Thank you!
--
Deet-doot-dot, I am a bot.
https://korg.wiki.kernel.org/userdoc/prtracker
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2019-06-08 20:20 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-06-08 11:21 [GIT PULL] s390 updates for 5.2-rc4 Heiko Carstens
2019-06-08 20:20 ` pr-tracker-bot
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).