system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-11-05 18:23:50 +00:00
Code Issues Projects Releases Packages Wiki Activity

parisc: don't enable irqs unconditionally in handle_interruption()

Browse source 
If the previous context had interrupts disabled, we should better
keep them disabled. This was noticed in the unwinding code where
a copy_from_kernel_nofault() triggered a page fault, and after
the fixup by the page fault handler interrupts where suddenly
enabled.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Sven Schnelle 2021-10-15 21:56:12 +02:00 committed by Helge Deller
parent 7ddb58cb0e
commit 014966dcf7
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/parisc/kernel/traps.c
View file

@ -481,7 +481,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
if (code == 1)
pdc_console_restart(); /* switch back to pdc if HPMC */
else
else if (!irqs_disabled_flags(regs->gr[0]))
local_irq_enable();
/* Security check: