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a7d834c4bc
linux/drivers
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Roland Dreier a7d834c4bc IPoIB/cm: Fix racy use of receive WR/SGL in ipoib_cm_post_receive_nonsrq() 
For devices that don't support SRQs, ipoib_cm_post_receive_nonsrq() is
called from both ipoib_cm_handle_rx_wc() and ipoib_cm_nonsrq_init_rx(),
and these two callers are not synchronized against each other.
However, ipoib_cm_post_receive_nonsrq() always reuses the same receive
work request and scatter list structures, so multiple callers can end
up stepping on each other, which leads to posting garbled work
requests.

Fix this by having the caller pass in the ib_recv_wr and ib_sge
structures to use, and allocating new local structures in
ipoib_cm_nonsrq_init_rx().

Based on a patch by Pradeep Satyanarayana <pradeep@us.ibm.com> and
David Wilder <dwilder@us.ibm.com>, with debugging help from Hoang-Nam
Nguyen <hnguyen@de.ibm.com>.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-14 23:48:47 -07:00
..
accessibility
acpi x86, VisWS: turn into generic arch, eliminate Kconfig specials 2008-07-10 18:55:47 +02:00
amba
ata Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2008-07-14 13:15:14 -07:00
atm firmware: convert Ambassador ATM driver to request_firmware() 2008-07-10 14:49:39 +01:00
auxdisplay Miguel Ojeda has moved 2008-07-04 10:40:05 -07:00
base Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2008-07-14 15:51:11 -07:00
block Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6 2008-07-14 14:48:31 -07:00
bluetooth Merge branch 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6 2008-07-14 16:54:07 -07:00
cdrom cdrom: revert commit 22a9189 (cdrom: use kmalloced buffers instead of buffers on stack) 2008-07-04 09:52:14 +02:00
char Merge branch 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6 2008-07-14 16:54:07 -07:00
clocksource
connector CONNECTOR: add a proc entry to list connectors 2008-06-27 20:03:24 -07:00
cpufreq Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq 2008-06-09 11:27:55 -07:00
cpuidle cpuidle acpi driver: fix oops on AC<->DC 2008-06-11 19:13:45 -04:00
crypto crypto: ixp4xx - Select CRYPTO_AUTHENC 2008-07-13 20:12:11 +08:00
dca
dio
dma iop-adma: fixup some kzalloc/memset confusions 2008-05-20 13:51:20 -07:00
edac edac: mpc85xx: fix building as a module 2008-05-24 09:56:13 -07:00
eisa
firewire firewire: fw-sbp2: fix parsing of logical unit directories 2008-06-27 20:55:00 +02:00
firmware Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2008-07-14 15:51:11 -07:00
gpio gpio: pca953x (i2c) handles max7310 too 2008-07-04 10:40:06 -07:00
gpu Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6 2008-07-14 14:48:31 -07:00
hid Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
hwmon hdaps: add support for various newer Lenovo thinkpads 2008-07-04 10:40:06 -07:00
i2c Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2008-07-14 16:06:58 -07:00
ide Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6 2008-07-14 14:48:31 -07:00
ieee1394 ieee1394: Kconfig menu touch-up 2008-06-19 00:12:36 +02:00
infiniband IPoIB/cm: Fix racy use of receive WR/SGL in ipoib_cm_post_receive_nonsrq() 2008-07-14 23:48:47 -07:00
input Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6 2008-07-14 14:48:31 -07:00
isdn Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
leds LEDS: fix race in device_create 2008-05-20 13:31:55 -07:00
lguest x86, VisWS: turn into generic arch, eliminate Kconfig specials 2008-07-10 18:55:47 +02:00
macintosh Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
mca
md Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2008-07-14 13:15:14 -07:00
media Merge branch 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6 2008-07-14 16:54:07 -07:00
memstick
message Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
mfd HTC_EGPIO is ARM-only 2008-05-21 16:56:00 -07:00
misc Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6 2008-07-14 14:48:31 -07:00
mmc Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2008-07-14 16:06:58 -07:00
mtd Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2008-07-14 16:06:58 -07:00
net Merge branch 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6 2008-07-14 16:54:07 -07:00
nubus
of rtc-ds1374: rename device to just "ds1374" 2008-06-06 11:29:10 -07:00
oprofile
parisc parisc-eisa_eeprom: BKL pushdown 2008-07-02 15:06:24 -06:00
parport
pci x86, VisWS: turn into generic arch, add early init quirks 2008-07-10 18:55:32 +02:00
pcmcia Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2008-07-14 16:06:58 -07:00
pnp PNPACPI: use _CRS IRQ descriptor length for _SRS 2008-06-11 19:13:46 -04:00
power power_supply: Fix race in power_supply_uevent 2008-06-10 02:13:51 +04:00
ps3
rapidio rapidio: fix device reference counting 2008-07-10 18:04:43 -07:00
rtc Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2008-07-14 16:06:58 -07:00
s390 Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6 2008-07-14 14:48:31 -07:00
sbus Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
scsi Merge branch 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6 2008-07-14 16:54:07 -07:00
serial Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2008-07-14 16:06:58 -07:00
sh
sn
spi Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2008-07-14 16:06:58 -07:00
ssb ssb-pcicore: Fix IRQ-vector init on embedded devices 2008-07-07 15:31:40 -04:00
tc
telephony phonedev: cdev lock_kernel() pushdown 2008-06-20 14:05:48 -06:00
thermal thermal: Create CONFIG_THERMAL_HWMON=n 2008-06-25 19:25:42 -04:00
uio Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
usb Merge branch 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6 2008-07-14 16:54:07 -07:00
video Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2008-07-14 16:06:58 -07:00
virtio virtio: Complete feature negotation before updating status 2008-06-15 13:46:16 -07:00
w1
watchdog Revert "[WATCHDOG] hpwdt: Add CFLAGS to get driver working" 2008-06-24 13:09:26 +00:00
xen Merge branch 'x86/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2008-07-14 13:43:24 -07:00
zorro
Kconfig
Makefile drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00