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a989ff898f
linux/arch/mips
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Al Viro a989ff898f MIPS: Don't stomp on caller's ->regs[2] in copy_thread() 
We never needed that (->regs[2] is overwritten on return from syscall paths
with return value of syscall, so storing it there early made no sense) and
with new restart logics since d27240bf7e61d2656de18e158ec910a902030847 it
has become really bad - we lose the original syscall number before the
place where we decide that we might need a syscall restart.

Note that for child we do need the assignment to regs[2] - it won't go
through the normal return from syscall path.

[Ralf: Issue found and reported by Lluís; initial investigations by me;
bug finally found and patch by Al; testing by me and Lluís.]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Tested-by: Lluís Batlle i Rossell <viriketo@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-12-16 18:10:52 +00:00
..
alchemy Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 2010-10-25 08:32:05 -07:00
ar7 MIPS: AR7: Add support for Titan (TNETV10xx) SoC variant 2010-10-29 19:08:46 +01:00
bcm47xx MIPS: BCM47xx: Fix nvram_getenv return value. 2010-08-05 13:26:31 +01:00
bcm63xx MIPS: Decouple BMIPS CPU support from bcm47xx/bcm63xx SoC code 2010-10-29 19:08:50 +01:00
boot Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus 2010-10-18 13:10:36 -07:00
cavium-octeon MIPS: Add platform device and Kconfig for Octeon USB EHCI / OHCI 2010-10-29 19:08:45 +01:00
cobalt MIPS: Move Cobalt Makefile parts to their own Platform file 2010-08-05 13:25:47 +01:00
configs defconfig reduction 2010-08-14 22:26:53 +02:00
dec Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-irqflags 2010-10-21 14:37:27 -07:00
emma MIPS: Ritually kill stupid printk. 2010-08-05 13:26:27 +01:00
fw MIPS: IP22: Remove an unused function 2009-12-17 01:56:56 +00:00
include/asm Merge git://git.infradead.org/mtd-2.6 2010-10-30 08:31:35 -07:00
jazz MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
jz4740 MIPS: jz4740: Fix Kbuild Platform file. 2010-10-19 18:32:39 +01:00
kernel MIPS: Don't stomp on caller's ->regs[2] in copy_thread() 2010-12-16 18:10:52 +00:00
lasat MIPS: Lasat: Migrate to new platform makefile style. 2010-08-05 13:25:53 +01:00
lib MIPS: libgcc.h: Checkpatch cleanup 2010-04-12 17:26:15 +01:00
loongson MIPS: Kconfig cleanup 2010-10-29 19:08:26 +01:00
math-emu MIPS: add support for software performance events 2010-10-29 19:08:48 +01:00
mipssim MIPS: MIPSsim: Migrate to new Platform file 2010-08-05 13:25:45 +01:00
mm MIPS: Honor L2 bypass bit 2010-10-29 19:08:52 +01:00
mti-malta MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
nxp/pnx8550/common MIPS: PNX8550: Move code one directory level up. 2010-08-05 13:25:56 +01:00
oprofile MIPS: Oprofile: Fixup of loongson2_exit() 2010-07-05 17:17:31 +01:00
pci MIPS: Octeon: Rewrite DMA mapping functions. 2010-10-29 19:08:32 +01:00
pmc-sierra MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
pnx833x MIPS: Fix gen_nand probe structures contents 2010-08-12 12:22:49 +01:00
pnx8550 MIPS: PNX8550: Sort out machine halt, restart and powerdown functions. 2010-10-04 18:33:57 +01:00
power MIPS: Loongson: Change the Email address of Wu Zhangjin 2010-02-27 12:53:12 +01:00
powertv MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
rb532 MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
sgi-ip22 MIPS: IP22, IP28: Migrate to new platform makefile style. 2010-08-05 13:25:49 +01:00
sgi-ip27 MIPS: IP27: Migrate to new Platform file 2010-08-05 13:25:47 +01:00
sgi-ip32 MIPS: IP32: Migrate to new platform makefile style. 2010-08-05 13:25:50 +01:00
sibyte MIPS: Swarm: Fix typo in symbol name: RTC_M4LT81 -> RTC_M41T81 2010-12-16 18:10:52 +00:00
sni MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
txx9 MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
vr41xx MIPS: Add missing #inclusions of <linux/irq.h> 2010-10-07 14:08:54 +01:00
wrppmc MIPS: WRPPMC: Migrate to new platform makefile style. 2010-08-05 13:25:51 +01:00
Kbuild MIPS: Repair Kbuild make clean breakage. 2010-10-19 18:32:39 +01:00
Kbuild.platforms MIPS: JZ4740: Add Kbuild files 2010-08-05 13:26:17 +01:00
Kconfig ftrace/MIPS: Enable C Version of recordmcount 2010-10-29 19:08:56 +01:00
Kconfig.debug MIPS: IRQ: Add stackoverflow detection 2010-10-29 19:08:27 +01:00
Makefile MIPS: Octeon: Apply CN63XXP1 errata workarounds. 2010-10-29 19:08:43 +01:00