- 03 Feb, 2007 3 commits
-
-
Ken Chen authored
An AIO bug was reported that sleeping function is being called in softirq context: BUG: warning at kernel/mutex.c:132/__mutex_lock_common() Call Trace: [<a000000100577b00>] __mutex_lock_slowpath+0x640/0x6c0 [<a000000100577ba0>] mutex_lock+0x20/0x40 [<a0000001000a25b0>] flush_workqueue+0xb0/0x1a0 [<a00000010018c0c0>] __put_ioctx+0xc0/0x240 [<a00000010018d470>] aio_complete+0x2f0/0x420 [<a00000010019cc80>] finished_one_bio+0x200/0x2a0 [<a00000010019d1c0>] dio_bio_complete+0x1c0/0x200 [<a00000010019d260>] dio_bio_end_aio+0x60/0x80 [<a00000010014acd0>] bio_endio+0x110/0x1c0 [<a0000001002770e0>] __end_that_request_first+0x180/0xba0 [<a000000100277b90>] end_that_request_chunk+0x30/0x60 [<a0000002073c0c70>] scsi_end_request+0x50/0x300 [scsi_mod] [<a0000002073c1240>] scsi_io_completion+0x200/0x8a0 [scsi_mod] [<a0000002074729b0>] sd_rw_intr+0x330/0x860 [sd_mod] [<a0000002073b3ac0>] scsi_finish_command+0x100/0x1c0 [scsi_mod] [<a0000002073c2910>] scsi_softirq_done+0x230/0x300 [scsi_mod] [<a000000100277d20>] blk_done_softirq+0x160/0x1c0 [<a000000100083e00>] __do_softirq+0x200/0x240 [<a000000100083eb0>] do_softirq+0x70/0xc0 See report: http://marc.theaimsgroup.com/?l=linux-kernel&m=116599593200888&w=2 flush_workqueue() is not allowed to be called in the softirq context. However, aio_complete() called from I/O interrupt can potentially call put_ioctx with last ref count on ioctx and triggers bug. It is simply incorrect to perform ioctx freeing from aio_complete. The bug is trigger-able from a race between io_destroy() and aio_complete(). A possible scenario: cpu0 cpu1 io_destroy aio_complete wait_for_all_aios { __aio_put_req ... ctx->reqs_active--; if (!ctx->reqs_active) return; } ... put_ioctx(ioctx) put_ioctx(ctx); __put_ioctx bam! Bug trigger! The real problem is that the condition check of ctx->reqs_active in wait_for_all_aios() is incorrect that access to reqs_active is not being properly protected by spin lock. This patch adds that protective spin lock, and at the same time removes all duplicate ref counting for each kiocb as reqs_active is already used as a ref count for each active ioctx. This also ensures that buggy call to flush_workqueue() in softirq context is eliminated. Signed-off-by:"Ken Chen" <kenchen@google.com> Cc: Zach Brown <zach.brown@oracle.com> Cc: Suparna Bhattacharya <suparna@in.ibm.com> Cc: Benjamin LaHaise <bcrl@kvack.org> Cc: Badari Pulavarty <pbadari@us.ibm.com> Cc: <stable@kernel.org> Acked-by:
Jeff Moyer <jmoyer@redhat.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
Adrian Bunk authored
Fix this by letting NF_CONNTRACK_H323 depend on (IPV6 || IPV6=n). Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
David S. Miller <davem@davemloft.net>
-
Patrick McHardy authored
CC net/netfilter/nf_conntrack_netlink.o net/netfilter/nf_conntrack_netlink.c: In function 'ctnetlink_conntrack_event': net/netfilter/nf_conntrack_netlink.c:392: error: 'struct nf_conn' has no member named 'mark' make[3]: *** [net/netfilter/nf_conntrack_netlink.o] Error 1 Signed-off-by:
Patrick McHardy <kaber@trash.net> Signed-off-by:
-
- 02 Feb, 2007 35 commits
-
-
Linus Torvalds authored
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: libata: Initialize nbytes for internal sg commands libata: Fix ata_busy_wait() kernel docs pata_via: Correct missing comments pata_atiixp: propogate cable detection hack from drivers/ide to the new driver ahci/pata_jmicron: fix JMicron quirk
-
Brian King authored
Some LLDDs, like ipr, use nbytes and pad_len to determine the total data transfer length of a command. Make sure nbytes gets initialized for internally generated commands. Signed-off-by:
Brian King <brking@linux.vnet.ibm.com> Signed-off-by:
Jeff Garzik <jeff@garzik.org>
-
Alan authored
> Looks like you should use ata_busy_wait() here, rather than reproducing > the same code again. It waits in 10uS chunks while 1uS chunks were used in the workaround. Could indeed do that once I know the fix is right. While I'm at it the ata_busy_wait kerneldoc is borked so here's a fix Signed-off-by:
Alan Cox <alan@redhat.com> Signed-off-by:
-
Alan authored
The 8237S was added to the chipsets but not to the comments. Fix this Signed-off-by:
-
Alan authored
Signed-off-by:
-
Tejun Heo authored
For all JMicrons except for 361 and 368, AHCI mode enable bits in the Control(1) should be set. This used to be done in both ahci and pata_jmicron but while moving programming to PCI quirk, it was removed from ahci part while still left in pata_jmicron. The implemented JMicron PCI quirk was incorrect in that it didn't program AHCI mode enable bits. If pata_jmicron is loaded first and programs those bits, the ahci ports work; otherwise, ahci device detection fails miserably. This patch makes JMicron PCI quirk clear SATA IDE mode bits and set AHCI mode bits and remove the respective part from pata_jmicron. Tested on JMB361, 363 and 368. Signed-off-by:
Tejun Heo <htejun@gmail.com> Signed-off-by:
-
Linus Torvalds authored
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: spidernet : fix memory leak in spider_net_stop e100: fix napi ifdefs removing needed code netxen patches
-
Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/davem/bnx2-2.6: [BNX2]: PHY workaround for 5709 A0.
-
Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [NET_SCHED]: act_ipt: fix regression in ipt action
-
Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC32]: Fix over-optimization by GCC near ip_fast_csum.
-
Evgeniy Dushistov authored
Mark ufs file system as maintainable, and add me as maintainer, to help people find appropriate person to assign bugs. Signed-off-by:
Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by:
-
Linus Torvalds authored
This reverts commit e4f0ae0e. It's not wrong, but it's not right either, and everybody seems to agree that the right fix is probably to do the ccr3 write after the ccr4 one (and that we also should clean it up a bit). And after that we need to really validate that all the bits that we write to ccr4 actually do work. The old 2.6.19 code was insane, and basically didn't change ccr4 at all (even though it certainly looks like it was the *intent* to do so). So let's revert the change that may fix things, just because it's not what was actually ever tested when the code was written, even if it _was_ the intent. There's a discussion on http://lkml.org/lkml/2007/1/9/63 that was started by the patch that now gets reverted, and that discussion may well contain the proper long-term fix. Suggested-by:
-
Jens Osterkamp authored
We forget to call spider_net_free_rx_chain_contents which does the actual dev_kfree_skb. New skbs are allocated from skbuff_head_cache on each "ifconfig up" letting the cache grow infinitely. This patch fixes it. Signed-off-by:
Jens Osterkamp <jens@de.ibm.com> Signed-off-by:
-
Auke Kok authored
e100: fix napi ifdefs removing needed code From: Auke Kok <auke-jan.h.kok@intel.com> The e100 driver is NAPI mode only. We need to netif_poll_disable during suspend and shutdown. The non-NAPI driver code was removed and is only avaiable in the out-of-tree e100 kernel driver. Signed-off-by:
Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by:
-
Jeff Garzik authored
-
Michael Chan authored
5709 A0 copper devices will not link up with some link partners without this workaround. Update driver to 1.5.5. Signed-off-by:
Michael Chan <mchan@broadcom.com> Signed-off-by:
-
Patrick McHardy authored
The x_tables patch broke target module autoloading in the ipt action by replacing the ipt_find_target call (which does autoloading) by xt_find_target (which doesn't do autoloading). Additionally xt_find_target may return ERR_PTR values in case of an error, which are not handled. Use xt_request_find_target, which does both autoloading and ERR_PTR handling properly. Also don't forget to drop the target module reference again when xt_check_target fails. Signed-off-by:
-
Bob Breuer authored
In some cases such as: iph->check = 0; iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); GCC may optimize out the previous store. Observed as a failure of NFS over udp (bad checksums on ip fragments) when compiled with GCC 3.4.2. Signed-off-by:
Bob Breuer <breuerr@mc.net> Signed-off-by:
-
Haavard Skinnemoen authored
avr32@atmel.com is a technical support address and is not really appropriate for sending patches. Lots of annoying automatics getting in the way. I'm still the maintainer of all the entries touched by this patch, so nothing changes with regard to the "Supported" status of the AVR32 architecture or the macb driver. Signed-off-by:
Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by:
-
Bartlomiej Zolnierkiewicz authored
Noticed by JosephChan@via.com.tw. Signed-off-by:
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by:
-
Randy Dunlap authored
Change SysRq showBlockedTasks from sysrq-X to sysrq-W and show that in the Help message. It was previously done via X, but X is already used for Xmon on ppc & powerpc platforms and this collision needs to be avoided. All callers of register_sysrq_key() are now marked in the sysrq op/key table. I didn't mark 'h' as Help because Help is just printed for any unknown key, such as '?'. Added some omitted sysrq key entries in the sysrq.txt file. Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
-
Guillaume Chazarain authored
Listing /proc/PID/task were PID is not a TGID should not result in duplicated entries. [g ~]$ pidof thunderbird-bin 2751 [g ~]$ ls /proc/2751/task 2751 2770 2771 2824 2826 2834 2835 2851 2853 [g ~]$ ls /proc/2770/task 2751 2770 2771 2824 2826 2834 2835 2851 2853 2770 2771 2824 2826 2834 2835 2851 2853 [g ~]$ Signed-off-by:
Guillaume Chazarain <guichaz@yahoo.fr> Acked-by:
"Eric W. Biederman" <ebiederm@xmission.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by:
-
Avi Kivity authored
Intel hosts, without long mode, and with nx support disabled in the bios have an efer that is readable but not writable. This causes a lockup on switch to guest mode (even though it should exit with reason 34 according to the documentation). Signed-off-by:
Avi Kivity <avi@qumranet.com> Signed-off-by:
-
Andrew Morton authored
Remove these recently-added warnings. They don't tell us anythng very interesting and Kumar says "On an embedded PPC reference system I see this message 6 times when I've got no cards in the PCI slots." Acked-by:
Kumar Gala <galak@kernel.crashing.org> Acked-by:
Greg KH <greg@kroah.com> Signed-off-by:
-
Jean Delvare authored
Add special handling for the VT82C686. Signed-off-by:
Jean Delvare <jdelvare@suse.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
-
Al Viro authored
missing helper used by arch/i386/mm/highmem.c, which is pulled into build on that configuration. Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Acked-by:
Jeff Dike <jdike@addtoit.com> Signed-off-by:
-
Al Viro authored
Won't build (request_irq()/free_irq()), even if you manage to find an s390 box with 8250-compatible UART they are expecting. Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
-
Al Viro authored
a) sun4d_boot_one_cpu() should be __cpuinit (called only from __cpuinit __cpu_up(), for one thing, leads to calls of __cpuinit functions for another). b) got externs in arch/sparc/kernel/smp.c to match reality. Signed-off-by:
-
Al Viro authored
fix the extern in efi.h Signed-off-by:
-
Al Viro authored
i386 boot/compressed/relocs checks for absolute symbols and warns about unexpected ones. If you build with modversions, you get ~2500 warnings about __crc_<symbol>. These suckers are really absolute symbols - we do _not_ want to modify them on relocation. They are generated by genksyms - EXPORT_... generates a weak alias, then genksyms produces an ld script with __crc_<symbol> = <checksum> and it's fed to ld to produce the final object file. Their only use is to match kernel and module at modprobe time; they _must_ be absolute. boot/compressed/relocs has a whitelist of known absolute symbols, but it doesn't know about __crc_... stuff. As the result, we get shitloads of false positives on any ld(1) version. Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
Signed-off-by:
-
Al Viro authored
a) cleanup_module() should be __exit b) externs should match reality Signed-off-by:
-
Al Viro authored
... and having it __init is a bad idea. Signed-off-by:
-
Al Viro authored
a) registers.h is really needed there b) include of asm-generic/termios should be under __KERNEL__ c) includes of asm-generic/{memory_model,page} should be under __KERNEL (nothing in there that would work in userland) d) a lot of stuff in ptrace.h should be under __KERNEL__. Signed-off-by:David Howells <dhowells@redhat.com> Signed-off-by:
-
- 01 Feb, 2007 2 commits
-
-
Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [NETFILTER]: xt_hashlimit: fix ip6tables dependency [SCTP]: Force update of the rto when processing HB-ACK [IPV6]: fix BUG of ndisc_send_redirect() [IPV6]: Fix up some CONFIG typos [NETFILTER]: SIP conntrack: fix out of bounds memory access [NETFILTER]: SIP conntrack: fix skipping over user info in SIP headers [NETFILTER]: xt_connbytes: fix division by zero [MAINTAINERS]: netfilter@ is subscribers-only
-
Linus Torvalds authored
This reverts commit e80ee884. Pawel Sikora had a boot-time oops due to it - because the sign change invalidates the following comparisons, since 'free_pages' can be negative. The micro-optimization just isn't worth it. Bisected-by:
Pawel Sikora <pluto@agmk.net> Acked-by:
-
