linux, branch v3.4

Linux 3.4

2012-05-20T22:29:13Z

Merge tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6

2012-05-19T22:30:15Z

Pull PA-RISC fixes from James Bottomley: "This is a set of three bug fixes that gets parisc running again on systems with PA1.1 processors. Two fix regressions introduced in 2.6.39 and one fixes a prefetch bug that only affects PA7300LC processors. We also have another pending fix to do with the sectional arrangement of vmlinux.lds, but there's a query on it during testing on one particular system type, so I'll hold off sending it in for now." * tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6: [PARISC] fix panic on prefetch(NULL) on PA7300LC [PARISC] fix crash in flush_icache_page_asm on PA1.1 [PARISC] fix PA1.1 oops on boot

Merge branch 'x86/ld-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-05-19T22:28:22Z

Pull x86 linker bug workarounds from Peter Anvin. GNU ld-2.22.52.0.[12] (*) has an unfortunate bug where it incorrectly turns certain relocation entries absolute. Section-relative symbols that are part of otherwise empty sections are silently changed them to absolute. We rely on section-relative symbols staying section-relative, and actually have several sections in the linker script solely for this purpose. See for example http://sourceware.org/bugzilla/show_bug.cgi?id=14052 We could just black-list the buggy linker, but it appears that it got shipped in at least F17, and possibly other distros too, so it's sadly not some rare unusual case. This backports the workaround from the x86/trampoline branch, and as Peter says: "This is not a minimal fix, not at all, but it is a tested code base." * 'x86/ld-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, relocs: When printing an error, say relative or absolute x86, relocs: Workaround for binutils 2.22.52.0.1 section bug x86, realmode: 16-bit real-mode code support for relocs tool (*) That's a manly release numbering system. Stupid, sure. But manly.

Merge branch 'for-linus' of git://git.kernel.dk/linux-block

2012-05-19T17:12:17Z

Pull block layer fixes from Jens Axboe: "A few small, but important fixes. Most of them are marked for stable as well - Fix failure to release a semaphore on error path in mtip32xx. - Fix crashable condition in bio_get_nr_vecs(). - Don't mark end-of-disk buffers as mapped, limit it to i_size. - Fix for build problem with CONFIG_BLOCK=n on arm at least. - Fix for a buffer overlow on UUID partition printing. - Trivial removal of unused variables in dac960." * 'for-linus' of git://git.kernel.dk/linux-block: block: fix buffer overflow when printing partition UUIDs Fix blkdev.h build errors when BLOCK=n bio allocation failure due to bio_get_nr_vecs() block: don't mark buffers beyond end of disk as mapped mtip32xx: release the semaphore on an error path dac960: Remove unused variables from DAC960_CreateProcEntries()

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2012-05-19T17:10:59Z

Pull one more networking bug-fix from David Miller: "One last straggler. Eric Dumazet's pktgen unload oops fix was not entirely complete, but all the cases should be handled properly now.... fingers crossed." * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: pktgen: fix module unload for good

memcg,thp: fix res_counter:96 regression

2012-05-19T17:10:27Z

Occasionally, testing memcg's move_charge_at_immigrate on rc7 shows a flurry of hundreds of warnings at kernel/res_counter.c:96, where res_counter_uncharge_locked() does WARN_ON(counter->usage < val). The first trace of each flurry implicates __mem_cgroup_cancel_charge() of mc.precharge, and an audit of mc.precharge handling points to mem_cgroup_move_charge_pte_range()'s THP handling in commit 12724850e806 ("memcg: avoid THP split in task migration"). Checking !mc.precharge is good everywhere else, when a single page is to be charged; but here the "mc.precharge -= HPAGE_PMD_NR" likely to follow, is liable to result in underflow (a lot can change since the precharge was estimated). Simply check against HPAGE_PMD_NR: there's probably a better alternative, trying precharge for more, splitting if unsuccessful; but this one-liner is safer for now - no kernel/res_counter.c:96 warnings seen in 26 hours. Signed-off-by: Hugh Dickins Signed-off-by: Linus Torvalds

x86, relocs: When printing an error, say relative or absolute

2012-05-19T02:50:02Z

When the relocs tool throws an error, let the error message say if it is an absolute or relative symbol. This should make it a lot more clear what action the programmer needs to take and should help us find the reason if additional symbol bugs show up. Signed-off-by: H. Peter Anvin Cc:

x86, relocs: Workaround for binutils 2.22.52.0.1 section bug

2012-05-19T02:50:00Z

GNU ld 2.22.52.0.1 has a bug that it blindly changes symbols from section-relative to absolute if they are in a section of zero length. This turns the symbols __init_begin and __init_end into absolute symbols. Let the relocs program know that those should be treated as relative symbols. Reported-by: Ingo Molnar Signed-off-by: H. Peter Anvin Cc: H.J. Lu Cc: Cc: Jarkko Sakkinen

x86, realmode: 16-bit real-mode code support for relocs tool

2012-05-19T02:49:40Z

A new option is added to the relocs tool called '--realmode'. This option causes the generation of 16-bit segment relocations and 32-bit linear relocations for the real-mode code. When the real-mode code is moved to the low-memory during kernel initialization, these relocation entries can be used to relocate the code properly. In the assembly code 16-bit segment relocations must be relative to the 'real_mode_seg' absolute symbol. Linear relocations must be relative to a symbol prefixed with 'pa_'. 16-bit segment relocation is used to load cs:ip in 16-bit code. Linear relocations are used in the 32-bit code for relocatable data references. They are declared in the linker script of the real-mode code. The relocs tool is moved to arch/x86/tools/relocs.c, and added new target archscripts that can be used to build scripts needed building an architecture. be compiled before building the arch/x86 tree. [ hpa: accelerating this because it detects invalid absolute relocations, a serious bug in binutils 2.22.52.0.x which currently produces bad kernels. ] Signed-off-by: H. Peter Anvin Link: http://lkml.kernel.org/r/1336501366-28617-2-git-send-email-jarkko.sakkinen@intel.com Signed-off-by: Jarkko Sakkinen Signed-off-by: H. Peter Anvin Cc:

Merge tag 'dm-3.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm

2012-05-19T01:22:45Z

Pull a dm fix from Alasdair G Kergon: "A fix to the thin provisioning userspace interface." * tag 'dm-3.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm: dm thin: fix table output when pool target disables discard passdown internally