- 21 Jan, 2011 23 commits
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Anton Blanchard authored
The FWNMI code uses a global buffer without any locks to read the RTAS error information. If two CPUs take a machine check at once then we will corrupt this buffer. Since most FWNMI rtas messages are not of the extended type, we can create a 64bit percpu buffer and use it where possible. If we do receive an extended RTAS log then we fall back to the old behaviour of using the global buffer. Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Anton Blanchard authored
Rework pseries machine check handler: - If MSR_RI isn't set, we cannot recover even if the machine check was fully recovered - Rename nonfatal to recovered - Handle RTAS_DISP_LIMITED_RECOVERY - Use BUS_MCEERR_AR instead of BUS_ADRERR - Don't check all the RTAS error log fields when receiving a synchronous machine check. Recent versions of the pseries firmware do not fill them in during a machine check and instead send a follow up error log with the detailed information. If we see a synchronous machine check, and we came from userspace then kill the task. Signed-off-by:
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Anton Blanchard authored
If a machine check comes from userspace we send a SIGBUS to the task and fail to printk anything. If we are taking machine checks due to bad hardware we want to know about it right away. Furthermore if we don't complain loudly then it will look a lot like a bug in the userspace application, potentially causing a lot of confusion. Signed-off-by:
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Anton Blanchard authored
We are calling debugger_fault_handler twice in machine_check_exception. Signed-off-by:
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Anton Blanchard authored
Newer versions of the System p firwmare send a partial RTAS error log in the machine check handler with a more detailed response appearing sometime later via check event. This means at machine check time we do not have enough information to ascertain exactly what went on. Furthermore, I have found the RTAS error logs in the machine check handler contain no useful information, so halting on them makes little sense. If we want to halt it would make more sense to do it following the error log received sometime later via check event. In light of this, never halt the error log in the pseries machine check handler. Signed-off-by:
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Anton Blanchard authored
We should never force MSR_RI on. If we take a machine check with MSR_RI off then we have no chance of recovering safely. Signed-off-by:
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Anton Blanchard authored
We were printing 64 bits of DSISR in show_regs even though it is 32 bit. Signed-off-by:
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Anton Blanchard authored
We should disable ftrace during kexec, some of the tracers are very invasive and we do not want them going off while doing the low level work of swapping one kernel out for another. This mirrors what we do on x86. Even though we cannot return from a kexec on powerpc (since we do not implement CONFIG_KEXEC_JUMP), add the restore code in case we do one day. Signed-off-by:
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Anton Blanchard authored
Use the crash handler hooks to run the SPU stop code, just like we do for ehea and cell RAS code. While I'm here I noticed "CPUSs reliabally" so fix the spelling MISTAKESs reliabally. Signed-off-by:
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Anton Blanchard authored
We check for a valid handler before calling ppc_md.machine_kexec_prepare so we can just remove these empty handlers. Signed-off-by:
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Anton Blanchard authored
There's no need to initialise ppc_md.machine_kexec and ppc_md.machine_kexec_prepare to the default handlers. Signed-off-by:
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Anton Blanchard authored
No one uses ppc_md.machine_crash_shutdown, so remove it. Signed-off-by:
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Anton Blanchard authored
No one uses ppc_md.machine_kexec, so remove it. Signed-off-by:
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Anton Blanchard authored
No one uses ppc_md.machine_kexec_cleanup, so remove it. Signed-off-by:
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Anton Blanchard authored
Move all the kexec handlers together. Signed-off-by:
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Tejun Heo authored
With cmwq, there's no reason to use a separate workqueue in cpufreq_spudemand. Use system_wq instead. The work items are already sync canceled on stop, so it's already guaranteed that no work is running when spu_gov_exit() is entered. Signed-off-by:
Tejun Heo <tj@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: linuxppc-dev@lists.ozlabs.org Cc: Dave Jones <davej@redhat.com> Cc: cpufreq@vger.kernel.org Signed-off-by:
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roel kluin authored
Fix error test in fan_{read,write}_reg() Signed-off-by:Roel Kluin <roel.kluin@gmail.com> Signed-off-by:
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Akinobu Mita authored
Simplify read file operation for /proc/powerpc/rtas/* interface by using simple_read_from_buffer. Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by:
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Akinobu Mita authored
Simplify several write fileoperations for spufs by using simple_write_to_buffer(). Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Steven Rostedt authored
32-bit variant of the previous patch for 64-bit: << When an interrupt occurs in userspace, we can call trace_hardirqs_on/off() With one level stack. But if we have irqsoff tracing enabled, it checks both CALLER_ADDR0 and CALLER_ADDR1. The second call goes two stack frames up. If this is from user space, then there may not exist a second stack.... >> Signed-off-by:Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
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Steven Rostedt authored
When an interrupt occurs in userspace, we can call trace_hardirqs_on/off() With one level stack. But if we have irqsoff tracing enabled, it checks both CALLER_ADDR0 and CALLER_ADDR1. The second call goes two stack frames up. If this is from user space, then there may not exist a second stack. Add a second stack when calling trace_hardirqs_on/off() otherwise the following oops might occur: Oops: Kernel access of bad area, sig: 11 [#1] PREEMPT SMP NR_CPUS=2 PA Semi PWRficient last sysfs file: /sys/block/sda/size Modules linked in: ohci_hcd ehci_hcd usbcore NIP: c0000000000e1c00 LR: c0000000000034d4 CTR: 000000011012c440 REGS: c00000003e2f3af0 TRAP: 0300 Not tainted (2.6.37-rc6+) MSR: 9000000000001032 <ME,IR,DR> CR: 48044444 XER: 20000000 DAR: 00000001ffb9db50, DSISR: 0000000040000000 TASK = c00000003e1a00a0[2088] 'emacs' THREAD: c00000003e2f0000 CPU: 1 GPR00: 0000000000000001 c00000003e2f3d70 c00000000084e0d0 c0000000008816e8 GPR04: 000000001034c678 000000001032e8f9 0000000010336540 0000000040020000 GPR08: 0000000040020000 00000001ffb9db40 c00000003e2f3e30 0000000060000000 GPR12: 100000000000f032 c00000000fff0280 000000001032e8c9 0000000000000008 GPR16: 00000000105be9c0 00000000105be950 00000000105be9b0 00000000105be950 GPR20: 00000000ffb9dc50 00000000ffb9dbf0 00000000102f0000 00000000102f0000 GPR24: 00000000102e0000 00000000102f0000 0000000010336540 c0000000009ded38 GPR28: 00000000102e0000 c0000000000034d4 c0000000007ccb10 c00000003e2f3d70 NIP [c0000000000e1c00] .trace_hardirqs_off+0xb0/0x1d0 LR [c0000000000034d4] decrementer_common+0xd4/0x100 Call Trace: [c00000003e2f3d70] [c00000003e2f3e30] 0xc00000003e2f3e30 (unreliable) [c00000003e2f3e30] [c0000000000034d4] decrementer_common+0xd4/0x100 Instruction dump: 81690000 7f8b0000 419e0018 f84a0028 60000000 60000000 60000000 e95f0000 80030000 e92a0000 eb6301f8 2f800000 <eb890010> 41fe00dc a06d000a eb1e8050 ---[ end trace 4ec7fd2be9240928 ]--- Reported-by:Joerg Sommer <joerg@alea.gnuu.de> Signed-off-by:
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Michael Ellerman authored
When we create an alternative feature section, the else case must be the same size or smaller than the body. This is because when we patch the else case in we just overwrite the body, so there must be room. Up to now we just did this by inspection, but it's quite easy to enforce it in the assembler, so we should. The only change is to add the ifgt block, but that effects the alignment of the tabs and so the whole macro is modified. Also add a test, but #if 0 it because we don't want to break the build. Anyone who's modifying the feature macros should enable the test. Signed-off-by:
Michael Ellerman <michael@ellerman.id.au> Signed-off-by:
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Benjamin Herrenschmidt authored
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- 20 Jan, 2011 3 commits
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Linus Torvalds authored
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Unify "numa=" command line option handling Revert "x86: Make relocatable kernel work with new binutils"
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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: (41 commits) sctp: user perfect name for Delayed SACK Timer option net: fix can_checksum_protocol() arguments swap Revert "netlink: test for all flags of the NLM_F_DUMP composite" gianfar: Fix misleading indentation in startup_gfar() net/irda/sh_irda: return to RX mode when TX error net offloading: Do not mask out NETIF_F_HW_VLAN_TX for vlan. USB CDC NCM: tx_fixup() race condition fix ns83820: Avoid bad pointer deref in ns83820_init_one(). ipv6: Silence privacy extensions initialization bnx2x: Update bnx2x version to 1.62.00-4 bnx2x: Fix AER setting for BCM57712 bnx2x: Fix BCM84823 LED behavior bnx2x: Mark full duplex on some external PHYs bnx2x: Fix BCM8073/BCM8727 microcode loading bnx2x: LED fix for BCM8727 over BCM57712 bnx2x: Common init will be executed only once after POR bnx2x: Swap BCM8073 PHY polarity if required iwlwifi: fix valid chain reading from EEPROM ath5k: fix locking in tx_complete_poll_work ath9k_hw: do PA offset calibration only on longcal interval ...
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Shan Wei authored
The option name of Delayed SACK Timer should be SCTP_DELAYED_SACK, not SCTP_DELAYED_ACK. Left SCTP_DELAYED_ACK be concomitant with SCTP_DELAYED_SACK, for making compatibility with existing applications. Reference: 8.1.19. Get or Set Delayed SACK Timer (SCTP_DELAYED_SACK) （http://tools.ietf.org/html/draft-ietf-tsvwg-sctpsocket-25) Signed-off-by:
Shan Wei <shanwei@cn.fujitsu.com> Acked-by:
Wei Yongjun <yjwei@cn.fujitsu.com> Acked-by:
Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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- 19 Jan, 2011 14 commits
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Eric Dumazet authored
commit 03634668 (net offloading: Convert checksums to use centrally computed features.) mistakenly swapped can_checksum_protocol() arguments. This broke IPv6 on bnx2 for instance, on NIC without TCPv6 checksum offloads. Reported-by:
Hans de Bruin <jmdebruin@xmsnet.nl> Signed-off-by:
Eric Dumazet <eric.dumazet@gmail.com> Acked-by:
Jesse Gross <jesse@nicira.com> Signed-off-by:
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David S. Miller authored
This reverts commit 0ab03c2b. It breaks several things including the avahi daemon. Signed-off-by:
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Jan Beulich authored
In order to be able to suppress the use of SRAT tables that 32-bit Linux can't deal with (in one case known to lead to a non-bootable system, unless disabling ACPI altogether), move the "numa=" option handling to common code. Signed-off-by:
Jan Beulich <jbeulich@novell.com> Reviewed-by:
Thomas Renninger <trenn@suse.de> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Renninger <trenn@suse.de> LKML-Reference: <4D36B581020000780002D0FF@vpn.id2.novell.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
This reverts commit 86b1e8dd ("x86: Make relocatable kernel work with new binutils"). Markus Trippelsdorf reported a boot failure caused by this patch. The real solution to the original patch will likely involve an arch-generic solution to define an overlaid jiffies_64 and jiffies variables. Until that's done and tested on all architectures revert this commit to solve the regression. Reported-and-bisected-by:
Markus Trippelsdorf <markus@trippelsdorf.de> Acked-by:
"H. Peter Anvin" <hpa@zytor.com> Cc: Shaohua Li <shaohua.li@intel.com> Cc: "Lu, Hongjiu" <hongjiu.lu@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org>, Cc: Sam Ravnborg <sam@ravnborg.org> LKML-Reference: <4D36A759.60704@intel.com> Signed-off-by:
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Anton Vorontsov authored
Just stumbled upon the issue while looking for another bug. The code looks correct, the indentation is not. Signed-off-by:
Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by:
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Kuninori Morimoto authored
sh_irda can not use RX/TX in same time, but this driver didn't return to RX mode when TX error occurred. This patch care xmit error case to solve this issue. Signed-off-by:
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by:
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Jesse Gross authored
In netif_skb_features() we return only the features that are valid for vlans if we have a vlan packet. However, we should not mask out NETIF_F_HW_VLAN_TX since it enables transmission of vlan tags and is obviously valid. Reported-by:
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Alexey Orishko authored
- tx_fixup() can be called from either timer callback or from xmit() in usbnet, so spinlock is added to avoid concurrency-related problem. - minor correction due to checkpatch warning for some line over 80 chars after previous patch was applied. Signed-off-by:
Alexey Orishko <alexey.orishko@stericsson.com> Signed-off-by:
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Jesper Juhl authored
In drivers/net/ns83820.c::ns83820_init_one() we dynamically allocate memory via alloc_etherdev(). We then call PRIV() on the returned storage which is 'return netdev_priv()'. netdev_priv() takes the pointer it is passed and adds 'ALIGN(sizeof(struct net_device), NETDEV_ALIGN)' to it and returns it. Then we test the resulting pointer for NULL, which it is unlikely to be at this point, and later dereference it. This will go bad if alloc_etherdev() actually returned NULL. This patch reworks the code slightly so that we test for a NULL pointer (and return -ENOMEM) directly after calling alloc_etherdev(). Signed-off-by:
Jesper Juhl <jj@chaosbits.net> Signed-off-by:
Benjamin LaHaise <bcrl@kvack.org> Signed-off-by:
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Romain Francoise authored
When a network namespace is created (via CLONE_NEWNET), the loopback interface is automatically added to the new namespace, triggering a printk in ipv6_add_dev() if CONFIG_IPV6_PRIVACY is set. This is problematic for applications which use CLONE_NEWNET as part of a sandbox, like Chromium's suid sandbox or recent versions of vsftpd. On a busy machine, it can lead to thousands of useless "lo: Disabled Privacy Extensions" messages appearing in dmesg. It's easy enough to check the status of privacy extensions via the use_tempaddr sysctl, so just removing the printk seems like the most sensible solution. Signed-off-by:
Romain Francoise <romain@orebokech.com> Signed-off-by:
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Yaniv Rosner authored
Update bnx2x version to 1.62.00-4 Signed-off-by:
Yaniv Rosner <yanivr@broadcom.com> Signed-off-by:
Eilon Greenstein <eilong@broadcom.com> Signed-off-by:
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Yaniv Rosner authored
Fix AER settings for BCM57712 to allow accessing all device addresses range in CL45 MDC/MDIO Signed-off-by:
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Yaniv Rosner authored
Fix BCM84823 LED behavior which may show on some systems Signed-off-by:
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Yaniv Rosner authored
Device may show incorrect duplex mode for devices with external PHY Signed-off-by:
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