AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity
22f4bb68b3
kernel_optimize_test/arch/mips
History
Manuel Lauss 22f4bb68b3 MIPS: Alchemy: Fix dbdma ring destruction memory debugcheck. 
DBDMA descriptors need to be located at 32-byte aligned addresses;
however kmalloc in conjunction with the SLAB allocator and
CONFIG_DEBUG_SLUB enabled doesn't deliver any.  The dbdma code works
around that by allocating a larger area and realigning the start
address within it.

When freeing a channel however this adjustment is not taken into
account which results in an oops:

Kernel bug detected[#1]:
[...]
Call Trace:
[<80186010>] cache_free_debugcheck+0x284/0x318
[<801869d8>] kfree+0xe8/0x2a0
[<8010b31c>] au1xxx_dbdma_chan_free+0x2c/0x7c
[<80388dc8>] au1x_pcm_dbdma_free+0x34/0x4c
[<80388fa8>] au1xpsc_pcm_close+0x28/0x38
[<80383cb8>] soc_codec_close+0x14c/0x1cc
[<8036dbb4>] snd_pcm_release_substream+0x60/0xac
[<8036dc40>] snd_pcm_release+0x40/0xa0
[<8018c7a8>] __fput+0x11c/0x228
[<80188f60>] filp_close+0x7c/0x98
[<80189018>] sys_close+0x9c/0xe4
[<801022a0>] stack_done+0x20/0x3c

Fix this by recording the address delivered by kmalloc() and using
it as parameter to kfree().

This fix is only necessary with the SLAB allocator and CONFIG_DEBUG_SLAB
enabled;  non-debug SLAB, SLUB do return nicely aligned addresses,
debug-enabled SLUB currently panics early in the boot process.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/878/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-01 20:30:25 +01:00
..
alchemy MIPS: Alchemy: Fix dbdma ring destruction memory debugcheck. 2010-02-01 20:30:25 +01:00
ar7 MIPS: AR7: Remove unused prom_getchar() 2010-01-12 18:19:36 +01:00
bcm47xx MIPS: Replace all usages of CL_SIZE by COMMAND_LINE_SIZE 2009-12-17 01:56:56 +00:00
bcm63xx MIPS: BCM63xx: Remove duplicate CONFIG_CMDLINE. 2010-01-12 18:19:36 +01:00
boot MIPS: Ignore vmlinux.* 2010-01-12 18:19:38 +01:00
cavium-octeon MIPS: Octeon: Use non-overflowing arithmetic in sched_clock 2010-01-12 18:19:36 +01:00
cobalt MIPS: Cobalt use strlcat() for the command line arguments 2010-01-12 18:19:34 +01:00
configs MIPS: Fix and enhance built-in kernel command line 2009-12-17 01:57:35 +00:00
dec Merge branch 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-18 09:15:24 -07:00
emma MIPS: Remove useless zero initializations. 2009-09-17 20:07:51 +02:00
fw MIPS: IP22: Remove an unused function 2009-12-17 01:56:56 +00:00
gt64120/wrppmc Update Yoichi Yuasa's e-mail address 2009-07-03 15:45:29 +01:00
include/asm MIPS: Alchemy: Fix dbdma ring destruction memory debugcheck. 2010-02-01 20:30:25 +01:00
jazz MIPS: Add IRQF_TIMER flag for timer interrupts 2009-11-02 12:00:02 +01:00
kernel MIPS: Cleanup random differences beween lmo and Linus' kernel. 2009-12-17 01:57:36 +00:00
lasat MIPS: Lasat: Fix botched changes to sysctl code. 2009-12-17 01:57:37 +00:00
lib MIPS: Fix __ndelay build error and add 'ull' suffix for 32-bit kernel 2009-06-17 11:06:24 +01:00
loongson MIPS: Loongson: Cleanups of serial port support 2009-12-17 01:57:34 +00:00
math-emu MIPS: Collect FPU emulator statistics per-CPU. 2009-12-17 01:57:08 +00:00
mipssim MIPS: Malta, PowerTV: Remove unnecessary "Linux started" 2010-01-12 18:19:36 +01:00
mm MIPS: Cleanup forgotten label_module_alloc in tlbex.c 2010-01-12 18:19:29 +01:00
mti-malta MIPS: Malta, PowerTV: Remove unnecessary "Linux started" 2010-01-12 18:19:36 +01:00
nxp MIPS: Fixup last users of irq_chip->typename 2009-12-17 01:57:21 +00:00
oprofile MIPS: oprofile: Only do performance counter handling for counter interrupts 2009-12-17 01:57:10 +00:00
pci MIPS: eXcite: Remove platform. 2009-12-17 01:57:35 +00:00
pmc-sierra cpumask: arch_send_call_function_ipi_mask: mips 2009-09-24 09:34:45 +09:30
power MIPS: Use PAGE_SIZE in assembly instead of _PAGE_SIZE. 2009-09-17 20:07:48 +02:00
powertv MIPS: Malta, PowerTV: Remove unnecessary "Linux started" 2010-01-12 18:19:36 +01:00
rb532 MIPS: Replace all usages of CL_SIZE by COMMAND_LINE_SIZE 2009-12-17 01:56:56 +00:00
sgi-ip22 MIPS: Move several variables from .bss to .init.data 2009-12-17 01:57:27 +00:00
sgi-ip27 mm: make totalhigh_pages unsigned long 2010-01-11 09:34:03 -08:00
sgi-ip32 MIPS: Move several variables from .bss to .init.data 2009-12-17 01:57:27 +00:00
sibyte MIPS: Replace all usages of CL_SIZE by COMMAND_LINE_SIZE 2009-12-17 01:56:56 +00:00
sni MIPS: Move several variables from .bss to .init.data 2009-12-17 01:57:27 +00:00
txx9 MIPS: TXx9: Cleanup builtin-cmdline processing 2010-01-12 18:19:34 +01:00
vr41xx MIPS: VR41xx: Use strlcat() for the command line arguments 2010-01-12 18:19:30 +01:00
Kconfig MIPS: No longer hardwire CONFIG_EMBEDDED to y 2009-12-17 01:57:36 +00:00
Kconfig.debug MIPS: Fix and enhance built-in kernel command line 2009-12-17 01:57:35 +00:00
Makefile MIPS: eXcite: Remove platform. 2009-12-17 01:57:35 +00:00