- 27 4月, 2007 23 次提交
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由 Martin Schwidefsky 提交于
Recent cvs versions of gcc have support for an improved stack overflow checking that calculates the size of the guard size for each function. If the compiler accepts -mstack-size without -mstack-guard then the new stack check is available. We always want to use the new stack checker. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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由 Heiko Carstens 提交于
We get this: Section mismatch: reference to .init.text:con3270_consetup from .data between 'con3270' (at offset 0x45c8) and 'con3270_fn' Section mismatch: reference to .init.text:con3215_consetup from .data between 'con3215' (at offset 0x4678) and 'raw3215_ccw_driver' Since there is no difference between a non present console setup function and one that returns only 0 remove them. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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由 Martin Schwidefsky 提交于
Simplify the signal_return function that checks for the two special system calls sigreturn and rt_sigreturn. No need to do a page table walk, a call to copy_from_user while disabled page faults will work as well. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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由 Martin Schwidefsky 提交于
The minor fault path has grown a lot in terms of cycles. In particular the kprobes hook is very costly. Optimize the path to save a couple of cycles. If kprobes is enabled more than 300 cycles can be avoided if kprobes_running() is false. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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由 Heiko Carstens 提交于
Generic bug implementation for s390. Will increase the value of the console output on BUG() statements since registers r0-r5,r14 will not be clobbered by a printk() call that was previously done before the illegal instruction of BUG() was hit. Also implements an architecture specific WARN_ON(). Output of that could be increased but requires common code change. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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由 Martin Schwidefsky 提交于
This patch adds two improvements to the oops output. First it adds an additional line after the PSW which decodes the different fields of it. Second a disassembler is added that decodes the instructions surrounding the faulting PSW. The output of a test oops now looks like this: kernel BUG at init/main.c:419 illegal operation: 0001 [#1] CPU: 0 Not tainted Process swapper (pid: 0, task: 0000000000464968, ksp: 00000000004be000) Krnl PSW : 0700000180000000 00000000000120b6 (rest_init+0x36/0x38) R:0 T:1 IO:1 EX:1 Key:0 M:0 W:0 P:0 AS:0 CC:0 PM:0 EA:3 Krnl GPRS: 0000000000000003 00000000004ba017 0000000000000022 0000000000000001 000000000003a5f6 0000000000000000 00000000004be6a8 0000000000000000 0000000000000000 00000000004b8200 0000000000003a50 0000000000008000 0000000000516368 000000000033d008 00000000000120b2 00000000004bdee0 Krnl Code: 00000000000120a6: e3e0f0980024 stg %r14,152(%r15) 00000000000120ac: c0e500014296 brasl %r14,3a5d8 00000000000120b2: a7f40001 brc 15,120b4 >00000000000120b6: 0707 bcr 0,%r7 00000000000120b8: eb7ff0500024 stmg %r7,%r15,80(%r15) 00000000000120be: c0d000195825 larl %r13,33d108 00000000000120c4: a7f13f00 tmll %r15,16128 00000000000120c8: a7840001 brc 8,120ca Call Trace: ([<00000000000120b2>] rest_init+0x32/0x38) [<00000000004be614>] start_kernel+0x37c/0x410 [<0000000000012020>] _ehead+0x20/0x80 Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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由 Martin Schwidefsky 提交于
Remove system call glue for sys_clone, sys_fork, sys_vfork, sys_execve, sys_sigreturn, sys_rt_sigreturn and sys_sigaltstack. Call do_execve from kernel_execve directly, move pt_regs to the right place and branch to sysc_return to start the user space program. This removes the last in-kernel system call. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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由 Cornelia Huck 提交于
We used to unregister ccw devices not directly from the I/O subchannel remove function in order to avoid lifelocks on the css bus semaphore. This semaphore is gone, and there is no reason to not unregister the ccw device directly (it is even better since it is more in keeping with the goal of immediate disconnect). Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Cornelia Huck 提交于
We allocage two pages when channel path measurements are enabled via cm_enable. We must not forget to free them again when channel path measurements are disabled again. Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Cornelia Huck 提交于
Introduce a mutex for struct ccwgroup to prevent simuntaneous register/unregister on the same ccwgroup device. Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Cornelia Huck 提交于
Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Peter Oberparleiter 提交于
Ensure that channel-path related subchannel data is only retrieved and used when it is valid and that it is updated when it may have changed. Signed-off-by: NPeter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Peter Oberparleiter 提交于
Use a bitmap for indicating which subchannels require evaluation instead of allocating memory for each evaluation request. This approach reduces memory consumption during recovery in case of massive evaluation request occurrence and removes the need for memory allocation failure handling. Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NPeter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Stefan Bader 提交于
Path verification triggered by changes to the available CHPIDs will be interrupted by another change but not re-started. This results in an invalid path mask. To solve this make sure to completely re-start path verification when changing the available paths. Signed-off-by: NStefan Bader <shbader@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Cornelia Huck 提交于
Convert ccw_uevent to use add_uevent_var and adapt snprint_alias. Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Peter Oberparleiter 提交于
Add a new attribute to the channel-path sysfs directory through which channel-path configure operations can be triggered. Also listen for hardware events requesting channel-path configure operations and process them accordingly. Signed-off-by: NPeter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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由 Cornelia Huck 提交于
Detangle the online_store code and make it more readable. Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Peter Oberparleiter 提交于
Check validity flag of CHPID description data before continuing with channel-path initialization. Signed-off-by: NPeter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Peter Oberparleiter 提交于
Signed-off-by: NPeter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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由 Peter Oberparleiter 提交于
Channel path status can now be modified by writing '0' and '1' to the sysfs status attribute in addition to 'offline' and 'online' respectively. Signed-off-by: NPeter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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由 Peter Oberparleiter 提交于
Introduce data type for channel-path IDs. Signed-off-by: NPeter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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由 Heiko Carstens 提交于
Clean interface between cio and ipl code, so Peter stops complaining. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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由 Heiko Carstens 提交于
If both sclp and diag memory detection don't work stop at the first memory hole. Otherwise the code might loop forever... Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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- 26 4月, 2007 5 次提交
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由 Linus Torvalds 提交于
.. ok, enough waffling about it already. "Just do it!" Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Linus Torvalds 提交于
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [PARPORT] SUNBPP: Fix OOPS when debugging is enabled. [SPARC] openprom: Switch to ref counting PCI API
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由 Linus Torvalds 提交于
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [NETLINK]: Infinite recursion in netlink.
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由 Andrew Morton 提交于
The packet driver is assuming (reasonably) that the (undocumented) request.errors is an errno. But it is in fact some mysterious bitfield. When things go wrong we return weird positive numbers to the VFS as pointers and it goes oops. Thanks to William Heimbigner for reporting and diagnosis. (It doesn't oops, but this driver still doesn't work for William) Cc: William Heimbigner <icxcnika@mar.tar.cc> Cc: Peter Osterlund <petero2@telia.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexey Kuznetsov 提交于
Reply to NETLINK_FIB_LOOKUP messages were misrouted back to kernel, which resulted in infinite recursion and stack overflow. The bug is present in all kernel versions since the feature appeared. The patch also makes some minimal cleanup: 1. Return something consistent (-ENOENT) when fib table is missing 2. Do not crash when queue is empty (does not happen, but yet) 3. Put result of lookup Signed-off-by: NAlexey Kuznetsov <kuznet@ms2.inr.ac.ru> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 25 4月, 2007 12 次提交
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由 Jens Axboe 提交于
There's a really rare and obscure bug in CFQ, that causes a crash in cfq_dispatch_insert() due to rq == NULL. One example of the resulting oops is seen here: http://lkml.org/lkml/2007/4/15/41 Neil correctly diagnosed the situation for how this can happen: if two concurrent requests with the exact same sector number (due to direct IO or aliasing between MD and the raw device access), the alias handling will add the request to the sortlist, but next_rq remains NULL. Read the more complete analysis at: http://lkml.org/lkml/2007/4/25/57 This looks like it requires md to trigger, even though it should potentially be possible to due with O_DIRECT (at least if you edit the kernel and doctor some of the unplug calls). The fix is to move the ->next_rq update to when we add a request to the rbtree. Then we remove the possibility for a request to exist in the rbtree code, but not have ->next_rq correctly updated. Signed-off-by: NJens Axboe <jens.axboe@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 YOSHIFUJI Hideaki 提交于
Oops, thinko. The test for accempting a RH0 was exatly the wrong way around. Signed-off-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Linus Torvalds 提交于
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [BNX2]: Fix occasional NETDEV WATCHDOG on 5709. [IPV6]: Disallow RH0 by default. [XFRM]: beet: fix pseudo header length value [TCP]: Congestion control initialization.
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由 Michael Chan 提交于
Tweak a register setting to prevent the tx mailbox from halting. Update version to 1.5.8. Signed-off-by: NMichael Chan <mchan@broadcom.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 YOSHIFUJI Hideaki 提交于
A security issue is emerging. Disallow Routing Header Type 0 by default as we have been doing for IPv4. Note: We allow RH2 by default because it is harmless. Signed-off-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ralf Baechle 提交于
This did cause oprofile to fail on non-multithreaded systems with more than 2 processors such as the BCM1480. Reported by Manish Lachwani (mlachwani@mvista.com). Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Linus Torvalds 提交于
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: drivers/net/hamradio/baycom_ser_fdx build fix usb-net/pegasus: fix pegasus carrier detection sis900: Allocate rx replacement buffer before rx operation [netdrvr] depca: handle platform_device_add() failure
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由 Andrew Morton 提交于
sparc64: drivers/net/hamradio/baycom_ser_fdx.c: In function `ser12_open': drivers/net/hamradio/baycom_ser_fdx.c:417: error: `NR_IRQS' undeclared (first us e in this function) drivers/net/hamradio/baycom_ser_fdx.c:417: error: (Each undeclared identifier is reported only once drivers/net/hamradio/baycom_ser_fdx.c:417: error: for each function it appears i n.) Cc: Folkert van Heusden <folkert@vanheusden.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Dan Williams 提交于
Broken by 4a1728a2 which switched the return semantics of read_mii_word() but didn't fix usage of read_mii_word() to conform to the new semantics. Setting carrier to off based on the NO_CARRIER flag is also incorrect as that flag only triggers on TX failure and therefore isn't correct when no frames are being transmitted. Since there is already a 2*HZ MII carrier check going on, defer to that. Add a TRUST_LINK_STATUS feature flag for adapters where the LINK_STATUS flag is actually correct, and use that rather than the NO_CARRIER flag. Signed-off-by: NDan Williams <dcbw@redhat.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Neil Horman 提交于
The sis900 driver appears to have a bug in which the receive routine passes the skbuff holding the received frame to the network stack before refilling the buffer in the rx ring. If a new skbuff cannot be allocated, the driver simply leaves a hole in the rx ring, which causes the driver to stop receiving frames and become non-recoverable without an rmmod/insmod according to reporters. This patch reverses that order, attempting to allocate a replacement buffer first, and receiving the new frame only if one can be allocated. If no skbuff can be allocated, the current skbuf in the rx ring is recycled, dropping the current frame, but keeping the NIC operational. Signed-off-by: NNeil Horman <nhorman@tuxdriver.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Andrea Righi 提交于
The following patch fixes a kernel bug in depca_platform_probe(). We don't use a dynamic pointer for pldev->dev.platform_data, so it seems that the correct way to proceed if platform_device_add(pldev) fails is to explicitly set the pldev->dev.platform_data pointer to NULL, before calling the platform_device_put(pldev), or it will be kfree'ed by platform_device_release(). Signed-off-by: NJeff Garzik <jeff@garzik.org>
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git://one.firstfloor.org/home/andi/git/linux-2.6由 Linus Torvalds 提交于
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: [PATCH] i386: Fix some warnings added by earlier patch [PATCH] x86-64: Always flush all pages in change_page_attr [PATCH] x86: Remove noreplacement option [PATCH] x86-64: make GART PTEs uncacheable
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