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2006-03-18[PATCH] disable unshare(CLONE_VM) for nowOleg Nesterov
sys_unshare() does mmput(new_mm). This is not enough if we have mm->core_waiters. This patch is a temporary fix for soon to be released 2.6.16. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> [ Checked with Uli: "I'm not planning to use unshare(CLONE_VM). It's not needed for any functionality planned so far. What we (as in Red Hat) need unshare() for now is the filesystem side." ] Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-17[NET]: Fix race condition in sk_wait_event().Alexey Kuznetsov
It is broken, the condition is checked out of socket lock. It is wonderful the bug survived for so long time. [ This fixes bugzilla #6233: race condition in tcp_sendmsg when connection became established ] Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-17[PATCH] fix free swap cache latencyHugh Dickins
Lee Revell reported 28ms latency when process with lots of swapped memory exits. 2.6.15 introduced a latency regression when unmapping: in accounting the zap_work latency breaker, pte_none counted 1, pte_present PAGE_SIZE, but a swap entry counted nothing at all. We think of pages present as the slow case, but Lee's trace shows that free_swap_and_cache's radix tree lookup can make a lot of work - and we could have been doing it many thousands of times without a latency break. Move the zap_work update up to account swap entries like pages present. This does account non-linear pte_file entries, and unmap_mapping_range skipping over swap entries, by the same amount even though they're quick: but neither of those cases deserves complicating the code (and they're treated no worse than they were in 2.6.14). Signed-off-by: Hugh Dickins <hugh@veritas.com> Acked-by: Nick Piggin <npiggin@suse.de> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-17[PATCH] kbuild: fix buffer overflow in modpostSam Ravnborg
Jiri Benc <jbenc@suse.cz> reported that modpost would stop with SIGABRT if used with long filepaths. The error looked like: > Building modules, stage 2. > MODPOST > *** glibc detected *** scripts/mod/modpost: realloc(): invalid next size: +0x0809f588 *** > [...] Fix this by allocating at least the required memory + SZ bytes each time. Before we sometimes ended up allocating too little memory resuting in the glibc detected bug above. Based on patch originally submitted by: Jiri Benc <jbenc@suse.cz> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-17[PATCH] nfsservctl(): remove user-triggerable printkPeter Staubach
A user can use nfsservctl() to spam the logs. This can happen because the arguments to the nfsservctl() system call are versioned. This is a good thing. However, when a bad version is detected, the kernel prints a message and then returns an error. Signed-off-by: Peter Staubach <staubach@redhat.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-17[PATCH] fix race in pagevec_strip?Christoph Lameter
We can call try_to_release_page() with PagePrivate off and a valid page->mapping This may cause all sorts of trouble for the filesystem *_releasepage() handlers. XFS bombs out in that case. Lock the page before checking for page private. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-17[PATCH] dm stripe: Fix boundsKevin Corry
The dm-stripe target currently does not enforce that the size of a stripe device be a multiple of the chunk-size. Under certain conditions, this can lead to I/O requests going off the end of an underlying device. This test-case shows one example. echo "0 100 linear /dev/hdb1 0" | dmsetup create linear0 echo "0 100 linear /dev/hdb1 100" | dmsetup create linear1 echo "0 200 striped 2 32 /dev/mapper/linear0 0 /dev/mapper/linear1 0" | \ dmsetup create stripe0 dd if=/dev/zero of=/dev/mapper/stripe0 bs=1k This will produce the output: dd: writing '/dev/mapper/stripe0': Input/output error 97+0 records in 96+0 records out And in the kernel log will be: attempt to access beyond end of device dm-0: rw=0, want=104, limit=100 The patch will check that the table size is a multiple of the stripe chunk-size when the table is created, which will prevent the above striped device from being created. This should not affect tools like LVM or EVMS, since in all the cases I can think of, striped devices are always created with the sizes being a multiple of the chunk-size. The size of a stripe device must be a multiple of its chunk-size. (akpm: that typecast is quite gratuitous) Signed-off-by: Kevin Corry <kevcorry@us.ibm.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-17[PATCH] x86: check for online cpus before bringing them upSrivatsa Vaddagiri
Bryce reported a bug wherein offlining CPU0 (on x86 box) and then subsequently onlining it resulted in a lockup. On x86, CPU0 is never offlined. The subsequent attempt to online CPU0 doesn't take that into account. It actually tries to bootup the already booted CPU. Following patch fixes the problem (as acknowledged by Bryce). Please consider for inclusion in 2.6.16. Check if cpu is already online. Signed-off-by: Srivatsa Vaddagiri <vatsa@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-17[PATCH] v9fs: fix overzealous dropping of dentry which breaks dcacheEric Van Hensbergen
There is a d_drop in dir_release which caused problems as it invalidates dcache entries too soon. This was likely a part of the wierd cwd behavior folks were seeing. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-17[PATCH] posix-timers: fix requeue accounting when signal is ignoredRoman Zippel
When the posix-timer signal is ignored then the timer is rearmed by the callback function. The requeue pending accounting has to be fixed up else the state might be wrong. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-17[PATCH] time_interpolator: add __read_mostlyChristoph Lameter
The pointer to the current time interpolator and the current list of time interpolators are typically only changed during bootup. Adding __read_mostly takes them away from possibly hot cachelines. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-17[PATCH] page migration: Fail with error if swap not setupChristoph Lameter
Currently the migration of anonymous pages will silently fail if no swap is setup. This patch makes page migration functions check for available swap and fail with -ENODEV if no swap space is available. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-17[PATCH] unshare: Use rcu_assign_pointer when setting sighandEric W. Biederman
The sighand pointer only needs the rcu_read_lock on the read side. So only depending on task_lock protection when setting this pointer is not enough. We also need a memory barrier to ensure the initialization is seen first. Use rcu_assign_pointer as it does this for us, and clearly documents that we are setting an rcu readable pointer. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-16[netdrvr] fix array overflows in Chelsio driverScott Bardone
Adrian Bunk wrote: > The Coverity checker spotted the following two array overflows in > drivers/net/chelsio/sge.c (in both cases, the arrays contain 3 > elements): [snip] This is a bug. The array should contain 2 elements. Here is the fix. Signed-off-by: Scott Bardone <sbardone@chelsio.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-16[PATCH] e1000 endianness bugsDavid S. Miller
return -E_NO_BIG_ENDIAN_TESTING; [E1000]: Fix 4 missed endianness conversions on RX descriptor fields. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-16Merge branch 'upstream-fixes' of ↵Jeff Garzik
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2006-03-16Merge branch 'e100-fixes' of git://198.78.49.142/~jbrandeb/linux-2.6Jeff Garzik
2006-03-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-mergeLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge: powerpc: update defconfigs [PATCH] powerpc: properly configure DDR/P5IOC children devs [PATCH] powerpc: remove duplicate EXPORT_SYMBOLS [PATCH] powerpc: RTC memory corruption [PATCH] powerpc: enable NAP only on cpus who support it to avoid memory corruption [PATCH] powerpc: Clarify wording for CRASH_DUMP Kconfig option [PATCH] powerpc/64: enable CONFIG_BLK_DEV_SL82C105 [PATCH] powerpc: correct cacheflush loop in zImage powerpc: Fix problem with time going backwards powerpc: Disallow lparcfg being a module
2006-03-16powerpc: update defconfigsPaul Mackerras
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-16[PATCH] powerpc: properly configure DDR/P5IOC children devsJohn Rose
The dynamic add path for PCI Host Bridges can fail to configure children adapters under P5IOC controllers. It fails to properly fixup bus/device resources, and it fails to properly enable EEH. Both of these steps need to occur before any children devices are enabled in pci_bus_add_devices(). Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-16[PATCH] powerpc: remove duplicate EXPORT_SYMBOLSOlaf Hering
remove warnings when building a 64bit kernel. smp_call_function triggers also with 32bit kernel. WARNING: vmlinux: duplicate symbol 'smp_call_function' previous definition was in vmlinux arch/powerpc/kernel/ppc_ksyms.c:164:EXPORT_SYMBOL(smp_call_function); arch/powerpc/kernel/smp.c:300:EXPORT_SYMBOL(smp_call_function); WARNING: vmlinux: duplicate symbol 'ioremap' previous definition was in vmlinux arch/powerpc/kernel/ppc_ksyms.c:113:EXPORT_SYMBOL(ioremap); arch/powerpc/mm/pgtable_64.c:321:EXPORT_SYMBOL(ioremap); WARNING: vmlinux: duplicate symbol '__ioremap' previous definition was in vmlinux arch/powerpc/kernel/ppc_ksyms.c:117:EXPORT_SYMBOL(__ioremap); arch/powerpc/mm/pgtable_64.c:322:EXPORT_SYMBOL(__ioremap); WARNING: vmlinux: duplicate symbol 'iounmap' previous definition was in vmlinux arch/powerpc/kernel/ppc_ksyms.c:118:EXPORT_SYMBOL(iounmap); arch/powerpc/mm/pgtable_64.c:323:EXPORT_SYMBOL(iounmap); Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-16[PATCH] powerpc: RTC memory corruptionMichael Neuling
We should be memset'ing the data we are pointing to, not the pointer itself. This is in an error path so we probably don't hit it much. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-16[PATCH] powerpc: enable NAP only on cpus who support it to avoid memory ↵Benjamin Herrenschmidt
corruption This patch fixes incorrect setting of powersave_nap to 1 on all PowerMacs, potentially causing memory corruption on some models. This bug was introuced by me during the 32/64 bits merge. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-16[PATCH] powerpc: Clarify wording for CRASH_DUMP Kconfig optionMichael Ellerman
The wording of the CRASH_DUMP Kconfig option is not very clear. It gives you a kernel that can be used _as_ the kdump kernel, not a kernel that can boot into a kdump kernel. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-16[PATCH] powerpc/64: enable CONFIG_BLK_DEV_SL82C105Olaf Hering
Enable the onboard IDE driver for p610, p615 and p630. They have the CD connected to this card. All other RS/6000 systems with this controller have no connectors and dont need this option. Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-16[PATCH] powerpc: correct cacheflush loop in zImageOlaf Hering
Correct the loop for cacheflush. No idea where I copied the code from, but the original does not work correct. Maybe the flush is not needed. Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-16powerpc: Fix problem with time going backwardsPaul Mackerras
The recent changes to keep gettimeofday in sync with xtime had the side effect that it was occasionally possible for the time reported by gettimeofday to go back by a microsecond. There were two reasons: (1) when we recalculated the offsets used by gettimeofday every 2^31 timebase ticks, we lost an accumulated fractional microsecond, and (2) because the update is done some time after the notional start of jiffy, if ntp is slowing the clock, it is possible to see time go backwards when the timebase factor gets reduced. This fixes it by (a) slowing the gettimeofday clock by about 1us in 2^31 timebase ticks (a factor of less than 1 in 3.7 million), and (b) adjusting the timebase offsets in the rare case that the gettimeofday result could possibly go backwards (i.e. when ntp is slowing the clock and the timer interrupt is late). In this case the adjustment will reduce to zero eventually because of (a). Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-15Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3362/1: [cleanup] - duplicate decleration of mem_fclk_21285 [ARM] 3365/1: [cleanup] header for compat.c exported functions [ARM] 3364/1: [cleanup] warning fix - definitions for enable_hlt and disable_hlt [ARM] 3363/1: [cleanup] process.c - fix warnings [ARM] 3358/1: [S3C2410] add missing SPI DMA resources [ARM] 3357/1: enable frontlight on collie [ARM] Fix "thead" typo
2006-03-15[PATCH] Fix ext2 readdir f_pos re-validation logicAl Viro
This fixes not one, but _two_, silly (but admittedly hard to hit) bugs in the ext2 filesystem "readdir()" function. It also cleans up the code to avoid the unnecessary goto mess. The bugs were related to re-valiating the f_pos value after somebody had either done an "lseek()" on the directory to an invalid offset, or when the offset had become invalid due to a file being unlinked in the directory. The code would not only set the f_version too eagerly, it would also not update f_pos appropriately for when the offset fixup took place. When that happened, we'd occasionally subsequently fail the readdir() even when we shouldn't (no real harm done, but an ugly printk, and obviously you would end up not necessarily seeing all entries). Thanks to Masoud Sharbiani <masouds@google.com> who noticed the problem and had a test-case for it, and also fixed up a thinko in the first version of this patch. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Masoud Sharbiani <masouds@google.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-15[ARM] 3362/1: [cleanup] - duplicate decleration of mem_fclk_21285Ben Dooks
Patch from Ben Dooks arch/arm/kernel/setup.c declares mem_fclk_21285 when this is already declared in include/asm-arm/system.h Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-15[ARM] 3365/1: [cleanup] header for compat.c exported functionsBen Dooks
Patch from Ben Dooks arch/arm/kernel/compat.c exports two functions, convert_to_tag_list and squash_mem_tags which are not defined in any header files, and not used outside arch/arm/kernel. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-15[ARM] 3364/1: [cleanup] warning fix - definitions for enable_hlt and disable_hltBen Dooks
Patch from Ben Dooks The enable_hlt and disable_hlt should be declared in include/asm/setup.h. This fixes sparse errors from arch/arm/kernel/process.c Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-15[ARM] 3363/1: [cleanup] process.c - fix warningsBen Dooks
Patch from Ben Dooks Fix the following warnings from sparse: arch/arm/kernel/process.c:86:6: warning: symbol 'default_idle' was not declared. Should it be static? arch/arm/kernel/process.c:378:5: warning: symbol 'dump_fpu' was not declared. Should it be static? Include <linux/elfcore.h> for dump_fpu() decleration, and make default_idle() static as it is not used outside the file. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-15[PATCH] ieee80211: Fix QoS is not active problemHong Liu
Fix QoS is not active even the network and the card is QOS enabled. The problem is we pass the wrong ieee80211_network address to ipw_handle_beacon/ipw_handle_probe_response, thus the ieee80211_network->qos_data.active will not be set, causing the driver not sending QoS frames at all. Signed-off-by: Hong Liu <hong.liu@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-03-15[PATCH] ieee80211: Fix CCMP decryption problem when QoS is enabledZhu Yi
Use the correct STYPE for Qos data. Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-03-15e100: fix eeh on pseries during ethtool -tJesse Brandeburg
Olaf Hering reported a problem on pseries with e100 where ethtool -t would cause a bus error, and the e100 driver would stop working. Due to the new load ucode command the cb list must be allocated before calling e100_init_hw, so remove the call and just let e100_up take care of it. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
2006-03-15[PATCH] fs/namespace.c:dup_namespace(): fix a use after freeAdrian Bunk
The Coverity checker spotted the following bug in dup_namespace(): <-- snip --> if (!new_ns->root) { up_write(&namespace_sem); kfree(new_ns); goto out; } ... out: return new_ns; <-- snip --> Callers expect a non-NULL result to not be freed. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-15[ARM] 3358/1: [S3C2410] add missing SPI DMA resourcesAlbrecht Dreß
Patch from Albrecht Dreß Add DMA resources to s3c2410 spi platform devices - dma_(alloc|free)_coherent should now work as expected. Signed-off-by: Albrecht Dreß <albrecht.dress@lios-tech.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-15[ARM] 3357/1: enable frontlight on colliePavel Machek
Patch from Pavel Machek Enable frontlight during collie bootup, so that display is actually readable in anything other than bright sunlight. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-15[ARM] Fix "thead" typoRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-14[PATCH] Consistent capabilites associated with MPOL_MOVE_ALLChristoph Lameter
It seems that setting scheduling policy and priorities is also the kind of thing that might be performed in apps that also use the NUMA API, so it would seem consistent to use CAP_SYS_NICE for NUMA also. So use CAP_SYS_NICE for controlling migration permissions. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-14[PATCH] Page migration documentation updateChristoph Lameter
Update the documentation for page migration. - Fix up bits and pieces in cpusets.txt - Rework text in vm/page-migration to be clearer and reflect the final version of page migration in 2.6.16. Mention Andi Kleen's numactl package that contains user space tools for page migration via libnuma. Add reference to numa_maps and to the manpage in numactl. - Add todo list for outstanding issues Signed-off-by: Christoph Lameter <clameter@sgi.com> Acked-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-14[PATCH] page migration: fail if page is in a vma flagged VM_LOCKEDChristoph Lameter
page migration currently simply retries a couple of times if try_to_unmap() fails without inspecting the return code. However, SWAP_FAIL indicates that the page is in a vma that has the VM_LOCKED flag set (if ignore_refs ==1). We can check for that return code and avoid retrying the migration. migrate_page_remove_references() now needs to return a reason why the failure occured. So switch migrate_page_remove_references to use -Exx style error messages. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-14[PATCH] "s390: multiple subchannel sets support" fixGreg Smith
It seems this patch got dropped (it was in addition to the `s390: improve response code handling in chsc_enable_facility()' patch). Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-14Merge git://oss.sgi.com:8090/oss/git/rc-fixesLinus Torvalds
* git://oss.sgi.com:8090/oss/git/rc-fixes: Fix a direct I/O locking issue revealed by the new mutex code.
2006-03-15Fix a direct I/O locking issue revealed by the new mutex code.Nathan Scott
Affects only XFS (i.e. DIO_OWN_LOCKING case) - currently it is not possible to get i_mutex locking correct when using DIO_OWN direct I/O locking in a filesystem due to indeterminism in the possible return code/lock/unlock combinations. This can cause a direct read to attempt a double i_mutex unlock inside XFS. We're now ensuring __blockdev_direct_IO always exits with the inode i_mutex (still) held for a direct reader. Tested with the three different locking modes (via direct block device access, ext3 and XFS) - both reading and writing; cannot find any regressions resulting from this change, and it clearly fixes the mutex_unlock warning originally reported here: http://marc.theaimsgroup.com/?l=linux-kernel&m=114189068126253&w=2 Signed-off-by: Nathan Scott <nathans@sgi.com> Acked-by: Christoph Hellwig <hch@lst.de>
2006-03-14[PATCH] JFS: Take logsync lock before testing mp->lsnDave Kleikamp
This fixes a race where lsn could be cleared before taking the lock Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-14Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] zfcp: fix device registration issues [SCSI] scsi_transport_fc: fix FC_HOST_NUM_ATTRS [SCSI] scsi: aha152x pcmcia driver needs spi transport [SCSI] zfcp: correctly set this_id for hosts [SCSI] Add Brownie to blacklist
2006-03-14[PATCH] Plug kdump shutdown race windowManeesh Soni
lapic_shutdown() re-enables interrupts which is un-desirable for panic case, so use local_irq_save() and local_irq_restore() to keep the irqs disabled for kexec on panic case, and close a possible race window while kdump shutdown as shown in this stack trace -- BUG: spinlock lockup on CPU#1, bash/4396, c52781a0 [<c01c1870>] _raw_spin_lock+0xb7/0xd2 [<c029e148>] _spin_lock+0x6/0x8 [<c011b33f>] scheduler_tick+0xe7/0x328 [<c0128a7c>] update_process_times+0x51/0x5d [<c0114592>] smp_apic_timer_interrupt+0x4f/0x58 [<c01141ff>] lapic_shutdown+0x76/0x7e [<c0104d7c>] apic_timer_interrupt+0x1c/0x30 [<c01141ff>] lapic_shutdown+0x76/0x7e [<c0116659>] machine_crash_shutdown+0x83/0xaa [<c013cc36>] crash_kexec+0xc1/0xe3 [<c029e148>] _spin_lock+0x6/0x8 [<c013cc22>] crash_kexec+0xad/0xe3 [<c0215280>] __handle_sysrq+0x84/0xfd [<c018d937>] write_sysrq_trigger+0x2c/0x35 [<c015e47b>] vfs_write+0xa2/0x13b [<c015ea73>] sys_write+0x3b/0x64 [<c0103c69>] syscall_call+0x7/0xb Signed-off-by: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-14Revert "[PATCH] x86-64: Fix up handling of non canonical user RIPs"Linus Torvalds
This reverts commit c33d4568aca9028a22857f94f5e0850012b6444b. Andrew Clayton and Hugh Dickins report that it's broken for them and causes strange page table and slab corruption, and spontaneous reboots. Let's get it right next time. Cc: Andrew Clayton <andrew@rootshell.co.uk> Cc: Hugh Dickins <hugh@veritas.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>