- 26 Mar, 2009 24 commits
-
-
Cornelia Huck authored
The common I/O layer may encounter a situation where the device number of a ccw device has changed or a device driver doesn't want to keep a formerly disconnected device becoming operational again. Instead of using device_del()/ device_add() as now, we can just unbind the driver from the device and rebind it to get the desired effect (rebinding) with less overhead. Signed-off-by:
Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com>
-
Heiko Carstens authored
Move all EXPORT_SYMBOLs to their corresponding definitions. Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
-
Heiko Carstens authored
Signed-off-by:
-
Heiko Carstens authored
Everybody enables it so there is no point for an extra config option. Signed-off-by:
-
Heiko Carstens authored
Split machine check handler code and move it to cio and kernel code where it belongs to. No functional change. Signed-off-by:
-
Sachin Sant authored
With CONFIG_NET not set appldata build breaks on s390. arch/s390/appldata/built-in.o: In function appldata_get_net_sum_data: appldata_net_sum.c:(.text+0x2684): undefined reference to dev_get_stats appldata_net_sum.c:(.text+0x2688): undefined reference to init_net appldata_net_sum.c:(.text+0x268c): undefined reference to init_net appldata_net_sum.c:(.text+0x2694): undefined reference to dev_base_lock The following patch fixes the issue for me. Signed-off-by:
Sachin Sant <sachinp@in.ibm.com> Signed-off-by:
-
Heiko Carstens authored
The ftrace code is currently not reentrant, so we better don't trace our machine check handler. Machine checks are handled like NMIs on s390. Signed-off-by:
-
Christian Borntraeger authored
Currently we use the cpuid (via STIDP instruction) to recognize LPAR, z/VM and KVM. The architecture states, that bit 0-7 of STIDP returns all zero, and if STIDP is executed in a virtual machine, the VM operating system will replace bits 0-7 with FF. KVM should not use FE to distinguish z/VM from KVM for interested guests. The proper way to detect the hypervisor is the STSI (Store System Information) instruction, which return information about the hypervisors via function code 3, selector1=2, selector2=2. This patch changes the detection routine of Linux to use STSI instead of STIDP. This detection is earlier than bootmem, we have to use a static buffer. Since STSI expects a 4kb block (4kb aligned) this patch also changes the init.data alignment for s390. As this section will be freed during boot, this should be no problem. Patch is tested with LPAR, z/VM, KVM on LPAR, and KVM under z/VM. Signed-off-by:
Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by:
-
Carsten Otte authored
The sie instruction requires address spaces to be switched to run proper. This patch verifies that this is the case in s390_enable_sie, otherwise the kernel would crash badly as soon as the process runs into sie. Signed-off-by:
Carsten Otte <cotte@de.ibm.com> Signed-off-by:
-
Christian Borntraeger authored
With lockdep we got the following trace after a panic: Badness at /home/autobuild/BUILD/linux-2.6.28-20090204/kernel/lockdep.c:2878 [...] Call Trace: [<0000000000176334>] lock_acquire+0x54/0xbc [<000000000050b4fe>] __atomic_notifier_call_chain+0x6e/0xdc [<000000000050b59c>] atomic_notifier_call_chain+0x30/0x44 [<0000000000504274>] panic+0xd0/0x1e8 [...] INFO: lockdep is turned off. Last Breaking-Event-Address: [<0000000000170e62>] check_flags+0xae/0x15c possible reason: unannotated irqs-off. lockdep is right. We missed a trace_hardirq_off in our smp_send_stop function and smp_send_stop is called before the panic call chain. Reported-by: Mijo <Safradin mijo@linux.vnet.ibm.com> Signed-off-by:
-
Hendrik Brueckner authored
This patch introduces the kernel parameter hvc_iucv_allow= that specifies a comma-separated list of z/VM user IDs. If specified, the z/VM IUCV hypervisor console device driver accepts IUCV connections from listed z/VM user IDs only. Signed-off-by:
Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by:
-
Hendrik Brueckner authored
If the hvc_iucv= kernel parameter specifies a value that is not valid, display an error message. Minor changes to existing kernel messages. Signed-off-by:
-
Heiko Carstens authored
Initialize per thread timer values instead of just copying them from the parent. That way it is easily possible to tell how much time a thread spent in user/system context. Doesn't fix a bug, this is just for debugging purposes. Signed-off-by:
-
Heiko Carstens authored
Fix all the whitespace damage in process.c, especially copy_thread(). Next patch will add code to copy_thread() which needs to 'fixed' first. Signed-off-by:
-
Heiko Carstens authored
Dead file. Seems to be a leftover from the 2.4->2.5 conversion. The used and uptodate version of this file is in arch/s390/kernel. Signed-off-by:
-
Heiko Carstens authored
All in sysinfo.c is core kernel code and not driver code. So move it to arch/s390/kernel. Also includes some small cleanups. Signed-off-by:
-
Stefan Haberland authored
Moved some Messages into s390 debug feature and changed remaining messages to use the dev_xxx and pr_xxx macros. Signed-off-by:
Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by:
-
Stefan Weinhuber authored
To support High Performance FICON, the DASD device driver has to translate I/O requests into the new transport mode control words (TCW) instead of the traditional (command mode) CCW requests. Signed-off-by:
Stefan Weinhuber <wein@de.ibm.com> Signed-off-by:
-
Stefan Weinhuber authored
The dasd device driver will now support ECKD devices with more then 65520 cylinders. In the traditional ECKD adressing scheme each track is addressed by a 16-bit cylinder and 16-bit head number. The new addressing scheme makes use of the fact that the actual number of heads is never larger then 15, so 12 bits of the head number can be redefined to be part of the cylinder address. Signed-off-by:
-
Jean-Baptiste Joret authored
Permission is now granted to the subsystem to format write R0 with: * an ID = CCHHR, where CC = physical cylinder number, HH = physical head number, and R = 0 * a key length of zero * a data length of eight * a data field containing all zeros Signed-off-by:
Jean-Baptiste Joret <joret@de.ibm.com> Signed-off-by:
-
Heiko Carstens authored
All of the ioctls are compatible. Just enable them. Signed-off-by:
-
Heiko Carstens authored
s390 arch backend for 1c0fe6e3 "mm: invoke oom-killer from page fault". Signed-off-by:
-
Frank Munzert authored
Provide new shutdown action "dump_reipl" for automatic ipl after dump. Signed-off-by:
Frank Munzert <munzert@de.ibm.com> Signed-off-by:
-
Christian Borntraeger authored
The s390 implemenation of dump_stack uses %p to display stack content. Since d97106ab (Make %p print '(null)' for NULL pointers) this causes a strange output for dump_stack: [...] Process basename (pid: 8822, task: 00000000b2ece038, ksp: 00000000b24d7b38) 04000000b5685c00 00000000b24d7760 0000000000000002 (null) 00000000b24d7800 00000000b24d7778 00000000b24d7778 00000000001052fe (null) 00000000b24d7b38 (null) 000000000000000a 000000000000000d (null) 00000000b24d7760 00000000b24d77d8 000000000051a7e8 00000000001052fe 00000000b24d7760 00000000b24d77b0 Call Trace: [...] This patch changes our dump_stack to use the appropriate %x format. Signed-off-by:
-
- 23 Mar, 2009 11 commits
-
-
Linus Torvalds authored
-
Kyle McMartin authored
With a sufficiently new compiler and binutils, code which wasn't previously generating .eh_frame sections has begun to. Certain architectures (powerpc, in this case) may generate unexpected relocation formats in response to this, preventing modules from loading. While the new relocation types should probably be handled, revert to the previous behaviour with regards to generation of .eh_frame sections. (This was reported against Fedora, which appears to be the only distro doing any building against gcc-4.4 at present: RH bz#486545.) Signed-off-by:
Kyle McMartin <kyle@redhat.com> Acked-by:
Roland McGrath <roland@redhat.com> Cc: Alexandre Oliva <aoliva@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
Jody McIntyre authored
Revert the change to the orphan dates of Windows 95, DOS, compression. Add a new orphan date for OS/2. Signed-off-by:
Jody McIntyre <scjody@sun.com> Acked-by:
Pavel Machek <pavel@ucw.cz> Signed-off-by:
-
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (32 commits) ucc_geth: Fix oops when using fixed-link support dm9000: locking bugfix net: update dnet.c for bus_id removal dnet: DNET should depend on HAS_IOMEM dca: add missing copyright/license headers nl80211: Check that function pointer != NULL before using it sungem: missing net_device_ops be2net: fix to restore vlan ids into BE2 during a IF DOWN->UP cycle be2net: replenish when posting to rx-queue is starved in out of mem conditions bas_gigaset: correctly allocate USB interrupt transfer buffer smsc911x: reset last known duplex and carrier on open sh_eth: Fix mistake of the address of SH7763 sh_eth: Change handling of IRQ netns: oops in ip[6]_frag_reasm incrementing stats net: kfree(napi->skb) => kfree_skb net: fix sctp breakage ipv6: fix display of local and remote sit endpoints net: Document /proc/sys/net/core/netdev_budget tulip: fix crash on iface up with shirq debug virtio_net: Make virtio_net support carrier detection ...
-
git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Fix crash with /proc/iomem sparc64: Reschedule KGDB capture to a software interrupt. sbus: Auto-load openprom module when device opened.
-
Miklos Szeredi authored
This patch fixes bug #12208: Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12208 Subject : uml is very slow on 2.6.28 host This turned out to be not a scheduler regression, but an already existing problem in ptrace being triggered by subtle scheduler changes. The problem is this: - task A is ptracing task B - task B stops on a trace event - task A is woken up and preempts task B - task A calls ptrace on task B, which does ptrace_check_attach() - this calls wait_task_inactive(), which sees that task B is still on the runq - task A goes to sleep for a jiffy - ... Since UML does lots of the above sequences, those jiffies quickly add up to make it slow as hell. This patch solves this by not rescheduling in read_unlock() after ptrace_stop() has woken up the tracer. Thanks to Oleg Nesterov and Ingo Molnar for the feedback. Signed-off-by:
Miklos Szeredi <mszeredi@suse.cz> CC: stable@kernel.org Signed-off-by:
-
git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpcLinus Torvalds authored
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc: powerpc/mm: Fix Respect _PAGE_COHERENT on classic ppc32 SW TLB load machines
-
Kumar Gala authored
Grant picked up the wrong version of "Respect _PAGE_COHERENT on classic ppc32 SW" (commit a4bd6a93) It was missing the code to actually deal with the fixup of _PAGE_COHERENT based on the CPU feature. Signed-off-by:
Kumar Gala <galak@kernel.crashing.org>
-
Anton Vorontsov authored
commit b1c4a9dd ("ucc_geth: Change uec phy id to the same format as gianfar's") introduced a regression in the ucc_geth driver that causes this oops when fixed-link is used: Unable to handle kernel paging request for data at address 0x00000000 Faulting instruction address: 0xc0151270 Oops: Kernel access of bad area, sig: 11 [#1] TMCUTU NIP: c0151270 LR: c0151270 CTR: c0017760 REGS: cf81fa60 TRAP: 0300 Not tainted (2.6.29-rc8) MSR: 00009032 <EE,ME,IR,DR> CR: 24024042 XER: 20000000 DAR: 00000000, DSISR: 20000000 TASK = cf81cba0[1] 'swapper' THREAD: cf81e000 GPR00: c0151270 cf81fb10 cf81cba0 00000000 c0272e20 c025f354 00001e80 cf86b08c GPR08: d1068200 cffffb74 06000000 d106c200 42024042 10085148 0fffd000 0ffc81a0 GPR16: 00000001 00000001 00000000 007ffeb0 00000000 0000c000 cf83f36c cf83f000 GPR24: 00000030 cf83f360 cf81fb20 00000000 d106c200 20000000 00001e80 cf83f360 NIP [c0151270] ucc_geth_open+0x330/0x1efc LR [c0151270] ucc_geth_open+0x330/0x1efc Call Trace: [cf81fb10] [c0151270] ucc_geth_open+0x330/0x1efc (unreliable) [cf81fba0] [c0187638] dev_open+0xbc/0x12c [cf81fbc0] [c0187e38] dev_change_flags+0x8c/0x1b0 This patch fixes the issue by removing offending (and somewhat duplicate) code from init_phy() routine, and changes _probe() function to use uec_mdio_bus_name(). Also, since we fully construct phy_bus_id in the _probe() routine, we no longer need ->phy_address and ->mdio_bus fields in ucc_geth_info structure. I wish the patch would be a bit shorter, but it seems like the only way to fix the issue in a sane way. Luckily, the patch has been tested with real PHYs and fixed-link, so no further regressions expected. Reported-by:
Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by:
Anton Vorontsov <avorontsov@ru.mvista.com> Tested-by:
David S. Miller <davem@davemloft.net>
-
David Brownell authored
This fixes a locking bug in the dm9000 driver. It calls request_irq() without setting IRQF_DISABLED ... which is correct for handlers that support IRQ sharing, since that behavior is not guaranteed for shared IRQs. However, its IRQ handler then wrongly assumes that IRQs are blocked. So the fix just uses the right spinlock primitives in the IRQ handler. NOTE: this is a classic example of the type of bug which lockdep currently masks by forcibly setting IRQF_DISABLED on IRQ handlers that did not request that flag. Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
-
Stephen Rothwell authored
Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
-
- 22 Mar, 2009 5 commits
-
-
git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: kconfig: improve seed in randconfig kconfig: fix randconfig for choice blocks
-
git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommuLinus Torvalds authored
* 'fix-includes' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k: merge the non-MMU and MMU versions of siginfo.h m68k: use the MMU version of unistd.h for all m68k platforms m68k: merge the non-MMU and MMU versions of signal.h m68k: merge the non-MMU and MMU versions of ptrace.h m68k: use MMU version of setup.h for both MMU and non-MMU m68k: merge the non-MMU and MMU versions of sigcontext.h m68k: merge the non-MMU and MMU versions of swab.h m68k: merge the non-MMU and MMU versions of param.h
-
Gertjan van Wingerde authored
Update all previous incarnations of my email address to the correct one. Signed-off-by:
Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by:
-
Tyler Hicks authored
If ecryptfs_encrypted_view or ecryptfs_xattr_metadata were being specified as mount options, a NULL pointer dereference of crypt_stat was possible during lookup. This patch moves the crypt_stat assignment into ecryptfs_lookup_and_interpose_lower(), ensuring that crypt_stat will not be NULL before we attempt to dereference it. Thanks to Dan Carpenter and his static analysis tool, smatch, for finding this bug. Signed-off-by:
Tyler Hicks <tyhicks@linux.vnet.ibm.com> Acked-by:
Dustin Kirkland <kirkland@canonical.com> Cc: Dan Carpenter <error27@gmail.com> Cc: Serge Hallyn <serue@us.ibm.com> Signed-off-by:
-
Tyler Hicks authored
When allocating the memory used to store the eCryptfs header contents, a single, zeroed page was being allocated with get_zeroed_page(). However, the size of an eCryptfs header is either PAGE_CACHE_SIZE or ECRYPTFS_MINIMUM_HEADER_EXTENT_SIZE (8192), whichever is larger, and is stored in the file's private_data->crypt_stat->num_header_bytes_at_front field. ecryptfs_write_metadata_to_contents() was using num_header_bytes_at_front to decide how many bytes should be written to the lower filesystem for the file header. Unfortunately, at least 8K was being written from the page, despite the chance of the single, zeroed page being smaller than 8K. This resulted in random areas of kernel memory being written between the 0x1000 and 0x1FFF bytes offsets in the eCryptfs file headers if PAGE_SIZE was 4K. This patch allocates a variable number of pages, calculated with num_header_bytes_at_front, and passes the number of allocated pages along to ecryptfs_write_metadata_to_contents(). Thanks to Florian Streibelt for reporting the data leak and working with me to find the problem. 2.6.28 is the only kernel release with this vulnerability. Corresponds to CVE-2009-0787 Signed-off-by:
Eric Sandeen <sandeen@redhat.com> Reviewed-by:
Eugene Teo <eugeneteo@kernel.sg> Cc: Greg KH <greg@kroah.com> Cc: dann frazier <dannf@dannf.org> Cc: Serge E. Hallyn <serue@us.ibm.com> Cc: Florian Streibelt <florian@f-streibelt.de> Cc: stable@kernel.org Signed-off-by:
-
