[PATCH] timer: use raw_spin_unlock_irqrestore and raw_spin_lock_irqsave instead of raw_spin_{lock|unlock}

raw_spin_unlock_irqrestore(&base->lock, flags); (5) The flags save from CPU0, and restore to CPU1. Is this wrong? we encountered a kernel panic, and we suspect that it is the problem. How about the following patch to fix. Signed-off-by: Wang Long --- kernel/time/time

[PATCH] idr: Fix a typo in idr_alloc_cyclic()'s comment

This patch fix a typo in comment for function idr_alloc_cyclic(). Signed-off-by: Wang Long --- lib/idr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/idr.c b/lib/idr.c index c2cf2c5..47d203f 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -100,7 +100,7 @@ int idr_alloc

[PATCH] Documentation: driver-api: update kernel connector

This patch changes: 1) Fix typo in kernel connector documentation. s/cn_netlink_send_multi/cn_netlink_send_mult/ 2) update definition of struct cn_msg Signed-off-by: Wang Long --- Documentation/driver-api/connector.rst | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff

[PATCH v1] xarray: update document for error space returned by xarray normal API

In the current xarray code, the negative value -1 and -4095 represented as an error. xa_is_err(xa_mk_internal(-4095)) and xa_is_err(xa_mk_internal(-1)) are all return true. This patch update the document. Signed-off-by: Wang Long --- include/linux/xarray.h | 2 +- 1 file changed, 1 insertion

[PATCH] xarray: update document for error space returned by xarray normal API

In the current xarray code, the negative value -1 and -4095 represented as an error. xa_is_error(xa_mk_internal(-4095)) and xa_is_error(xa_mk_internal(-1)) are all return true. This patch update the document. Signed-off-by: Wang Long --- include/linux/xarray.h | 2 +- 1 file changed, 1

[PATCH] xarray: update document for error space returned by xarray normal API

In the current xarray code, the negative value -1 and -4095 represented as an error. xa_is_error(xa_mk_internal(-4095)) and xa_is_error(xa_mk_internal(-1)) are all return true. This patch update the document. Signed-off-by: Wang Long --- include/linux/xarray.h | 2 +- 1 file changed, 1

[PATCH] radix-tree: optimization for radix_tree_init_maxnodes

if i == 0, height_to_maxnodes[i] = 0, if i >= 1, height_to_maxnodes[i] = height_to_maxnodes[i-1] + __maxindex(i-1) + 1. so delete height_to_maxindex and optimize the calculation of height_to_maxnodes array. Signed-off-by: Wang Long --- lib/radix-tree.c |

[PATCH v2] memcg: writeback: use memcg->cgwb_list directly

mem_cgroup_cgwb_list is a very simple wrapper and it will never be used outside of code under CONFIG_CGROUP_WRITEBACK. so use memcg->cgwb_list directly. Reviewed-by: Jan Kara Signed-off-by: Wang Long --- include/linux/memcontrol.h | 1 - mm/backing-dev.c | 4 ++-- mm/memcontro

Re: [PATCH] memcg: writeback: use memcg->cgwb_list directly

On 22/4/2018 8:43 PM, Michal Hocko wrote: On Sun 22-04-18 01:50:57, Jan Kara wrote: On Sat 21-04-18 21:29:41, Wang Long wrote: Signed-off-by: Wang Long Yeah, looks good. I guess it was originally intended to avoid compilation errors if CONFIG_CGROUP_WRITEBACK was disabled. But it doesn&#

[PATCH] memcg: writeback: use memcg->cgwb_list directly

Signed-off-by: Wang Long --- include/linux/memcontrol.h | 1 - mm/backing-dev.c | 4 ++-- mm/memcontrol.c| 5 - 3 files changed, 2 insertions(+), 8 deletions(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index d99b71b..c0056e0 100644 --- a

Re: [PATCH] writeback: safer lock nesting

Hi, [This is an automated email] This commit has been processed by the -stable helper bot and determined to be a high probability candidate for -stable trees. (score: 44.5575) The bot has tested the following trees: v4.16.1, v4.15.16, v4.14.33, v4.9.93, v4.4.127. v4.16.1: Build OK! v4.15.16

Re: [PATCH v3] writeback: safer lock nesting

done Given the deadlock is not currently possible, it's debatable if there's any reason to modify the kernel. I suggest we should to prevent future surprises. This deadlock occurs three times in our environment， this deadlock occurs three times in our environment. It is better to cc s

Re: [RFC] Is it correctly that the usage for spin_{lock|unlock}_irq in clear_page_dirty_for_io

On 4/4/2018 7:12 AM, Greg Thelen wrote: On Tue, Apr 3, 2018 at 5:03 AM Michal Hocko wrote: On Mon 02-04-18 19:50:50, Wang Long wrote: Hi, Johannes Weiner and Tejun Heo I use linux-4.4.y to test the new cgroup controller io and the current stable kernel linux-4.4.y has the follow logic

[RFC] Is it correctly that the usage for spin_{lock|unlock}_irq in clear_page_dirty_for_io

Hi,  Johannes Weiner and Tejun Heo I use linux-4.4.y to test the new cgroup controller io and the current stable kernel linux-4.4.y has the follow logic int clear_page_dirty_for_io(struct page *page){ ... ...     memcg = mem_cgroup_begin_page_stat(page); --(a)  

[PATCH] jbd2: remove the conditional test

kmem_cache_destroy already handles null pointers, so we can remove the conditional test entirely. This patch also set NULL after the kmem_cache_destroy in function jbd2_journal_destroy_handle_cache. Signed-off-by: Wang Long --- fs/jbd2/journal.c | 18 +++--- fs/jbd2/revoke.c

Re: [PATCH] jbd2: set to NULL after kmem_cache_destroy

On 6/2/2018 1:00 AM, Darrick J. Wong wrote: On Mon, Feb 05, 2018 at 09:39:17PM +0800, Wang Long wrote: Signed-off-by: Wang Long --- fs/jbd2/journal.c | 9 ++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 93016bb..38dc24c

[PATCH] jbd2: set to NULL after kmem_cache_destroy

Signed-off-by: Wang Long --- fs/jbd2/journal.c | 9 ++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 93016bb..38dc24c 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -2649,11 +2649,14 @@ static int __init

[PATCH] jbd2: remove duplicate `\n` in jbd_debug

: (jbd2_journal_commit_transaction, 1092): JBD2: commit phase 7 ``` Every jbd_debug call in kernel will append `\n` in its fmt argument, so remove duplicate `\n` Signed-off-by: Wang Long --- fs/jbd2/journal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index

[PATCH] writeback: update comment in inode_io_list_move_locked

The @head can be wb->b_dirty_time, so update the comment. Signed-off-by: Wang Long --- fs/fs-writeback.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 8d477cf..7cb1dd1 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writebac

[PATCH] writeback: fix comment in __mark_inode_dirty

Signed-off-by: Wang Long --- fs/fs-writeback.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index cea4836..8d477cf 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -2209,7 +2209,7 @@ void __mark_inode_dirty(struct inode *inode

[PATCH] debug cgroup: use task_css_set instead of rcu_dereference

This macro `task_css_set` verifies that the caller is inside proper critical section if the kernel set CONFIG_PROVE_RCU=y. Signed-off-by: Wang Long --- kernel/cgroup/debug.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/cgroup/debug.c b/kernel/cgroup/debug.c

[PATCH v2] writeback: remove the unused function parameter

The parameter `struct bdi_writeback *wb` is not been used in the function body. so we just remove it. Signed-off-by: Wang Long --- include/linux/backing-dev.h | 2 +- mm/page-writeback.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/backing-dev.h

[PATCH] writeback: remove the unused function parameter

Signed-off-by: Wang Long --- include/linux/backing-dev.h | 2 +- mm/page-writeback.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 1662157..186a2e7 100644 --- a/include/linux/backing-dev.h +++ b

[PATCH] workqueue: Fix comment for unbound workqueue's attrbutes

Signed-off-by: Wang Long --- kernel/workqueue.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/workqueue.c b/kernel/workqueue.c index a2dccfe..ea3c29f 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -5006,9 +5006,10 @@ int workqueue_set_unbound_cpumask

[PATCH v2] kselftest: add kselftest-clean rule

iles. Signed-off-by: Wang Long --- Makefile | 4 1 file changed, 4 insertions(+) diff --git a/Makefile b/Makefile index 1d341eb..3edd7b3 100644 --- a/Makefile +++ b/Makefile @@ -1075,6 +1075,9 @@ PHONY += kselftest kselftest: $(Q)$(MAKE) -C tools/testing/selftests run_test

[PATCH] kselftest: replace rm -f command with $(RM)

l/html_node/Implicit-Variables.html Signed-off-by: Wang Long --- tools/testing/selftests/breakpoints/Makefile | 2 +- tools/testing/selftests/efivarfs/Makefile | 2 +- tools/testing/selftests/futex/functional/Makefile | 2 +- tools/testing/selftests/ipc/Makefile

[PATCH] kselftest: replace $(RM) with rm -f command

Some test's Makefile using "$(RM)" while the other's using "rm -f". It is better to use one of them in all tests. "rm -f" is better, because it is less magic, and everyone konws what is does. Signed-off-by: Wang Long --- tools/testing/selftests/cap

[PATCH] kselftest: using built-in rule when delete file

Use make's built-in rules to when delete a file or delete files. Signed-off-by: Wang Long --- tools/testing/selftests/breakpoints/Makefile | 2 +- tools/testing/selftests/efivarfs/Makefile | 2 +- tools/testing/selftests/futex/functional/Makefile | 2 +-

[PATCH] Documentation: Update kselftest.txt

Add document for how to install selftests. Signed-off-by: Wang Long --- Documentation/kselftest.txt | 16 1 file changed, 16 insertions(+) diff --git a/Documentation/kselftest.txt b/Documentation/kselftest.txt index a87d840..9bbbcdc 100644 --- a/Documentation/kselftest.txt

[PATCH] kselftest: add cleankselftest rule

iles. Signed-off-by: Wang Long --- Makefile | 4 1 file changed, 4 insertions(+) diff --git a/Makefile b/Makefile index 84f4b31..c25d139 100644 --- a/Makefile +++ b/Makefile @@ -1075,6 +1075,9 @@ PHONY += kselftest kselftest: $(Q)$(MAKE) -C tools/testing/selftests run_tests +cleanks

[PATCH v2] kasan: Fix a type conversion error

The current KASAN code can not find the following out-of-bounds bugs: char *ptr; ptr = kmalloc(8, GFP_KERNEL); memset(ptr+7, 0, 2); the cause of the problem is the type conversion error in *memory_is_poisoned_n* function. So this patch fix that. Signed-off-by: Wang Long

[PATCH 1/2] lib: test_kasan: add some testcases

This patch add some out of bounds testcases to test_kasan module. Signed-off-by: Wang Long --- lib/test_kasan.c | 69 1 file changed, 69 insertions(+) diff --git a/lib/test_kasan.c b/lib/test_kasan.c index c1efb1b..c32f3b0 100644 --- a

[PATCH 2/2] kasan: Fix a type conversion error

The current KASAN code can find the following out-of-bounds bugs: char *ptr; ptr = kmalloc(8, GFP_KERNEL); memset(ptr+7, 0, 2); the cause of the problem is the type conversion error in *memory_is_poisoned_n* function. So this patch fix that. Signed-off-by: Wang Long

[PATCH 0/2] KASAN: fix a type conversion error and add test

Hi, This patchset fix a type conversion error for KASAN. patch 1: this patch add some out-of-bounds testcases, the current KASAN code can not find these bugs. patch 2: fix the type conversion error, with this patch, KASAN could find these out-of-bounds bugs. Wang Long (2): lib: test_kasan

[RFC PATCH] test_kasan: make kmalloc_oob_krealloc_less more correctly

more correctly. Signed-off-by: Wang Long --- lib/test_kasan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/test_kasan.c b/lib/test_kasan.c index 044c54d..c1efb1b 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -114,7 +114,7 @@ static noinline void __init

[PATCH] test_kasan: just fix a typo

This patch just fix a typo in test_kasan. Signed-off-by: Wang Long --- lib/test_kasan.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/test_kasan.c b/lib/test_kasan.c index 098c08e..044c54d 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -65,7 +65,7

[PATCH] arm64: mm: add __init section marker to free_initrd_mem

It is not needed after booting, this patch moves the free_initrd_mem() function to the __init section. This patch also make keep_initrd __initdata, to reduce kernel size. Signed-off-by: Wang Long --- arch/arm64/mm/init.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a

[PATCH] arm: mm: add __init section marker to free_initrd_mem

It is not needed after booting, this patch moves the free_initrd_mem() function to the __init section. This patch also make keep_initrd __initdata, to reduce kernel size. Signed-off-by: Wang Long --- arch/arm/mm/init.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a

[PATCH v2] drivers/of/fdt.c: replace pr_warning by pr_warn

uot;End of tree marker overwritten: %08x\n", So,we should convert pr_warning to pr_warn. Signed-off-by: Wang Long --- drivers/of/fdt.c | 10 +- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 0749656..e1f61b8 100644 --- a/dr

[tip:irq/core] drivers/irqchip: Replace pr_warning by pr_warn

Commit-ID: faca10b9e63e880c81388fbbedf7ede6dcd77c70 Gitweb: http://git.kernel.org/tip/faca10b9e63e880c81388fbbedf7ede6dcd77c70 Author: Wang Long AuthorDate: Tue, 21 Jul 2015 08:11:01 + Committer: Thomas Gleixner CommitDate: Wed, 22 Jul 2015 18:37:42 +0200 drivers/irqchip: Replace

[PATCH] drivers/irqchip: replace pr_warning by pr_warn

Update the last pr_warning callsite in drivers/irqchip. Signed-off-by: Wang Long --- drivers/irqchip/exynos-combiner.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c index 5c82e3b..80104f9 100644

[PATCH] drivers/of/fdt.c: replace pr_warning by pr_warn

Update the last pr_warning callsite in drivers/of. Signed-off-by: Wang Long --- drivers/of/fdt.c | 10 +- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 0749656..e1f61b8 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c

[PATCH] Documentation: Update filesystems/debugfs.txt

This patch update the Documentation/filesystems/debugfs.txt file. The main work is to add the description of the following functions: debugfs_create_atomic_t debugfs_create_u32_array debugfs_create_devm_seqfile debugfs_create_file_size Signed-off-by: Wang Long --- Documentation

[PATCH] kprobes: Use debugfs_remove_recursive instead debugfs_remove

remove_recursive instead. Signed-off-by: Wang Long --- kernel/kprobes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/kprobes.c b/kernel/kprobes.c index c90e417..8cd82a5 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -2459,7 +2459,7 @@ static int __init de

[PATCH v2 2/2] apei/erst-dbg: Define pr_fmt macro to avoid the duplication of ERST_DBG_PFX

Define pr_fmt macro with {ERST DBG: } prefix, then remove all use of ERST_DBG_PFX in the pr_* functions. Signed-off-by: Wang Long --- drivers/acpi/apei/erst-dbg.c | 11 +-- 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/acpi/apei/erst-dbg.c b/drivers/acpi/apei

[PATCH v2 1/2] apei/*.c: use pr_warn instead of pr_warning

This patch can avoid the following WARNING when run checkpatch.pl: WARNING: Prefer pr_warn(... to pr_warning(... #21: FILE: drivers/acpi/apei/erst-dbg.c:134: + pr_warning("Record (ID: 0x%llx) length is too long: %zd\n", Signed-off-by: Wang Long --

[PATCH 1/2] apei/*.c: use pr_warn instead of pr_warning

This patch can avoid the following WARNING when run checkpatch.pl: WARNING: Prefer pr_warn(... to pr_warning(... #21: FILE: drivers/acpi/apei/erst-dbg.c:134: + pr_warning("Record (ID: 0x%llx) length is too long: %zd\n", Signed-off-by: Wang Long --

[PATCH 2/2] apei/erst-dbg: Define pr_fmt macro to avoid the duplication of ERST_DBG_PFX

Define pr_fmt macro with {ERST DBG: } prefix, then remove all use of ERST_DBG_PFXin the pr_* functions. Signed-off-by: Wang Long --- drivers/acpi/apei/erst-dbg.c | 10 +- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/acpi/apei/erst-dbg.c b/drivers/acpi/apei/erst

[PATCH] ring-buffer-benchmark: Fix the wrong sched_priority of producer

The producer should be used producer_fifo as its sched_priority, so correct it. Signed-off-by: Wang Long --- kernel/trace/ring_buffer_benchmark.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/ring_buffer_benchmark.c b/kernel/trace/ring_buffer_benchmark.c

[PATCH] ring-buffer-benchmark: Fix the wrong type

The macro 'module_param' shows that the type of the variable disable_reader and write_iteration is unsigned integer. so, we change their type form int to unsigned int. Signed-off-by: Wang Long --- kernel/trace/ring_buffer_benchmark.c | 4 ++-- 1 file changed, 2 insertions(+), 2

[PATCH] ring-buffer-benchmark: Fix the wrong param in module_param

sumer_fifo 4294967295 With this patch: # cat /sys/module/ring_buffer_benchmark/parameters/consumer_fifo -1 Signed-off-by: Wang Long --- kernel/trace/ring_buffer_benchmark.c | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/ke

[PATCH] pstore/ram: delete the redundant persistent_ram_zap call

In ramoops_init_prz function, we have already call persistent_ram_zap in persistent_ram_new, so just delete it. Signed-off-by: Wang Long --- fs/pstore/ram.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index 44a549b..fc8db9d 100644 --- a/fs/pstore/ram.c

[PATCH v2] netevent: remove automatic variable in register_netevent_notifier()

Remove automatic variable 'err' in register_netevent_notifier() and return the result of atomic_notifier_chain_register() directly. Signed-off-by: Wang Long --- net/core/netevent.c | 5 + 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/net/core/netevent.c b/net/core/

[PATCH] netevent: remove automatic variable in register_netevent_notifier()

Remove automatic variable 'err' in register_netevent_notifier() and return the return value of atomic_notifier_chain_register() directly. Signed-off-by: Wang Long --- net/core/netevent.c | 5 + 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/net/core/netevent.c

[PATCH] OOM: print points as unsigned int

In oom_kill_process(), the variable 'points' is unsigned int. Print it as such. Signed-off-by: Wang Long --- mm/oom_kill.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 2b665da..056002c 100644 --- a/mm/oom_kill.c +++ b/mm/

[PATCH v2 06/17] tracing: Use trace_seq_used() and seq_buf_used() instead of len

es if just the len of the seq_buf descriptor is used to copy memory. Link: http://lkml.kernel.org/r/20141114121911.09ba3...@gandalf.local.home Reported-by: Petr Mladek [wanglong: backport to 3.10 stable - only backport seq_buf related ] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt

[PATCH v2 00/17] [request for stable 3.10 inclusion] x86/nmi: Print all cpu stacks from NMI safely

This is my backport patch series to Fix the problem(backport to 3.10): " When trigger_all_cpu_backtrace() is called on x86, it will trigger an NMI on each CPU and call show_regs(). But this can lead to a hard lock up if the NMI comes in on another printk(). " The solution is described in commit "a9

[PATCH v2 08/17] tracing: Have seq_buf use full buffer

d-by: Jiri Kosina Acked-by: Jiri Kosina Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 6 +++--- kernel/trace/seq_buf.c | 9 ++--- 2 files changed, 9 insertions(+), 6 deletions(-) diff --git

[PATCH v2 16/17] x86/nmi: Perform a safe NMI stack trace on all CPUs

rnel.org/p/20140619213952.360076...@goodmis.org Link: http://lkml.kernel.org/r/20141115050605.055232...@goodmis.org Tested-by: Jiri Kosina Acked-by: Jiri Kosina Acked-by: Paul E. McKenney Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable - adjust context ] Signed-off-by: Wang Long Signed-off-

[PATCH v2 15/17] printk/percpu: Define printk_func when printk is not defined

eeds to be defined even if CONFIG_PRINTK is not. Also add a printk.h include in percpu.h just to be safe. Link: http://lkml.kernel.org/r/20141121183215.01ba5...@canb.auug.org.au Reported-by: Stephen Rothwell [wanglong: backport to 3.10 stable - adjust context ] Signed-off-by: Wang Long Signed-off-

[PATCH v2 14/17] printk: Add per_cpu printk func to allow printk to be diverted

d-by: Petr Mladek [wanglong: backport to 3.10 stable - adjust context ] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/percpu.h | 3 +++ include/linux/printk.h | 2 ++ kernel/printk.c| 38 +- 3 files changed, 34 insert

[PATCH v2 17/17] x86/nmi: Fix use of unallocated cpumask_var_t

RIP __memcpy (arch/x86/lib/memcpy_64.S:151) [ 1110.296763] RSP [ 1110.296765] CR2: Link: http://lkml.kernel.org/r/1416931560-10603-1-git-send-email-sasha.le...@oracle.com Signed-off-by: Sasha Levin [wanglong: backport to 3.10 stable - adjust context ] Signed-off-by: Wang

[PATCH v2 11/17] seq_buf: Move the seq_buf code to lib/

d-by: Petr Mladek [wanglong: backport to 3.10 stable - adjust context ] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- kernel/trace/Makefile | 1 - kernel/trace/seq_buf.c | 359 - lib/Makefile | 2 +- lib/seq_buf.c

[PATCH v2 13/17] seq_buf: Fix seq_buf_bprintf() truncation

.org Reported-by: Joe Perches [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- lib/seq_buf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/seq_buf.c b/lib/seq_buf.c index 795dd94..f25c33b 100644 --- a/lib/seq_buf.c +++

[PATCH v2 09/17] tracing: Add seq_buf_get_buf() and seq_buf_commit() helper functions

le] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 41 + kernel/trace/seq_buf.c | 7 +++ 2 files changed, 44 insertions(+), 4 deletions(-) diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h ind

[PATCH v2 10/17] seq-buf: Make seq_buf_bprintf() conditional on CONFIG_BINARY_PRINTF

oo is only used by the tracing infrastructure and is still encapsulated by the CONFIG_BINARY_PRINTF. Link: http://lkml.kernel.org/r/20141104160222.969013...@goodmis.org Tested-by: Jiri Kosina Acked-by: Jiri Kosina Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable] Signed-off-by: Wang Lo

[PATCH v2 12/17] seq_buf: Fix seq_buf_vprintf() truncation

remaining in the seq_buf buffer, and not if it is less than or equal to as it currently does. Then seq_buf_vprintf() will know if the write from vsnpritnf() was truncated or not. Cc: sta...@vger.kernel.org [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Ro

[PATCH v2 07/17] seq_buf: Add seq_buf_can_fit() helper function

1118164025.gl23...@pathway.suse.cz Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- kernel/trace/seq_buf.c | 23 ++- 1 file changed, 18 insertions(+), 5 deletions(-) diff --git a/kernel/trace/seq_buf.

[PATCH v2 05/17] seq_buf: Create seq_buf_used() to find out how much was written

rnel.org/r/20141114011412.170377...@goodmis.org Link: http://lkml.kernel.org/r/20141114011413.321654...@goodmis.org Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 6 ++ kernel/trace/seq_buf.c | 5 +---

[PATCH v2 01/17] tracing: Create seq_buf layer in trace_seq

ned-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 81 kernel/trace/Makefile | 1 + kernel/trace/seq_buf.c | 341 3 files changed, 423 insertions(+) create mode 100644 include/linux/seq_buf.h create m

[PATCH v2 02/17] tracing: Convert seq_buf_path() to be like seq_path()

able - only backport seq_buf related ] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 2 +- kernel/trace/seq_buf.c | 28 2 files changed, 17 insertions(+), 13 deletions(-) diff --git a/include/linux/seq_buf.h b/include/linux/seq

[PATCH v2 04/17] tracing: Add a seq_buf_clear() helper and clear len and readpos in init

ode. Link: http://lkml.kernel.org/r/20141104160222.352309...@goodmis.org Tested-by: Jiri Kosina Acked-by: Jiri Kosina Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 9 +++-- 1 file changed, 7

[PATCH v2 03/17] tracing: Convert seq_buf fields to be like seq_file fields

d-by: Jiri Kosina Acked-by: Jiri Kosina Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/linux/seq_buf.h b/inc

[RFC PATCH 00/17][request for stable 3.10 inclusion] x86/nmi: Print all cpu stacks from NMI safely

This is my backport patch series to Fix the problem(backport to 3.10): " When trigger_all_cpu_backtrace() is called on x86, it will trigger an NMI on each CPU and call show_regs(). But this can lead to a hard lock up if the NMI comes in on another printk(). " The solution is described in commit "a9

[RFC PATCH 16/17] x86/nmi: Perform a safe NMI stack trace on all CPUs

rnel.org/p/20140619213952.360076...@goodmis.org Link: http://lkml.kernel.org/r/20141115050605.055232...@goodmis.org Tested-by: Jiri Kosina Acked-by: Jiri Kosina Acked-by: Paul E. McKenney Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable - adjust context ] Signed-off-by: Wang Long Signed-off-

[RFC PATCH 09/17] tracing: Add seq_buf_get_buf() and seq_buf_commit() helper functions

le] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 41 + kernel/trace/seq_buf.c | 7 +++ 2 files changed, 44 insertions(+), 4 deletions(-) diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h ind

[RFC PATCH 12/17] seq_buf: Fix seq_buf_vprintf() truncation

remaining in the seq_buf buffer, and not if it is less than or equal to as it currently does. Then seq_buf_vprintf() will know if the write from vsnpritnf() was truncated or not. Cc: sta...@vger.kernel.org [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Ro

[RFC PATCH 01/17] tracing: Create seq_buf layer in trace_seq

ged-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 81 kernel/trace/Makefile | 1 + kernel/trace/seq_buf.c | 341 3 files changed, 423 insertions(+) create mode 100644 include/linux/seq_buf.h create m

[RFC PATCH 11/17] seq_buf: Move the seq_buf code to lib/

d-by: Petr Mladek [wanglong: backport to 3.10 stable - adjust context ] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- kernel/trace/Makefile | 1 - lib/Makefile| 2 +- {kernel/trace => lib}/seq_buf.c | 0 3 files changed, 1 insertion(+), 2 deletions(-) r

[RFC PATCH 04/17] tracing: Add a seq_buf_clear() helper and clear len and readpos in init

ode. Link: http://lkml.kernel.org/r/20141104160222.352309...@goodmis.org Tested-by: Jiri Kosina Acked-by: Jiri Kosina Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 9 +++-- 1 file changed, 7

[RFC PATCH 06/17] tracing: Use trace_seq_used() and seq_buf_used() instead of len

es if just the len of the seq_buf descriptor is used to copy memory. Link: http://lkml.kernel.org/r/20141114121911.09ba3...@gandalf.local.home Reported-by: Petr Mladek [wanglong: backport to 3.10 stable - only backport seq_buf related ] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt

[RFC PATCH 14/17] printk: Add per_cpu printk func to allow printk to be diverted

d-by: Petr Mladek [wanglong: backport to 3.10 stable - adjust context ] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/percpu.h | 3 +++ include/linux/printk.h | 2 ++ kernel/printk.c| 38 +- 3 files changed, 34 insert

[RFC PATCH 02/17] tracing: Convert seq_buf_path() to be like seq_path()

able - only backport seq_buf related ] Singed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 2 +- kernel/trace/seq_buf.c | 28 2 files changed, 17 insertions(+), 13 deletions(-) diff --git a/include/linux/seq_buf.h b/include/linux/seq

[RFC PATCH 15/17] printk/percpu: Define printk_func when printk is not defined

eeds to be defined even if CONFIG_PRINTK is not. Also add a printk.h include in percpu.h just to be safe. Link: http://lkml.kernel.org/r/20141121183215.01ba5...@canb.auug.org.au Reported-by: Stephen Rothwell [wanglong: backport to 3.10 stable - adjust context ] Signed-off-by: Wang Long Signed-off-

[RFC PATCH 05/17] seq_buf: Create seq_buf_used() to find out how much was written

rnel.org/r/20141114011412.170377...@goodmis.org Link: http://lkml.kernel.org/r/20141114011413.321654...@goodmis.org Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 6 ++ kernel/trace/seq_buf.c | 5 +---

[RFC PATCH 10/17] seq-buf: Make seq_buf_bprintf() conditional on CONFIG_BINARY_PRINTF

oo is only used by the tracing infrastructure and is still encapsulated by the CONFIG_BINARY_PRINTF. Link: http://lkml.kernel.org/r/20141104160222.969013...@goodmis.org Tested-by: Jiri Kosina Acked-by: Jiri Kosina Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable] Signed-off-by: Wang Lo

[RFC PATCH 17/17] x86/nmi: Fix use of unallocated cpumask_var_t

RIP __memcpy (arch/x86/lib/memcpy_64.S:151) [ 1110.296763] RSP [ 1110.296765] CR2: Link: http://lkml.kernel.org/r/1416931560-10603-1-git-send-email-sasha.le...@oracle.com Signed-off-by: Sasha Levin [wanglong: backport to 3.10 stable - adjust context ] Signed-off-by: Wang

[RFC PATCH 03/17] tracing: Convert seq_buf fields to be like seq_file fields

d-by: Jiri Kosina Acked-by: Jiri Kosina Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/linux/seq_buf.h b/inc

[RFC PATCH 07/17] seq_buf: Add seq_buf_can_fit() helper function

1118164025.gl23...@pathway.suse.cz Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- kernel/trace/seq_buf.c | 23 ++- 1 file changed, 18 insertions(+), 5 deletions(-) diff --git a/kernel/trace/seq_buf.

[RFC PATCH 13/17] seq_buf: Fix seq_buf_bprintf() truncation

.org Reported-by: Joe Perches [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- lib/seq_buf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/seq_buf.c b/lib/seq_buf.c index 795dd94..f25c33b 100644 --- a/lib/seq_buf.c +++

[RFC PATCH 08/17] tracing: Have seq_buf use full buffer

d-by: Jiri Kosina Acked-by: Jiri Kosina Reviewed-by: Petr Mladek [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long Signed-off-by: Steven Rostedt --- include/linux/seq_buf.h | 6 +++--- kernel/trace/seq_buf.c | 9 ++--- 2 files changed, 9 insertions(+), 6 deletions(-) diff --git

[PATCH] Documentation: cpu-freq: delete duplicate description of sysfs interface 'scaling_driver'

cond] scaling_driver :Hardware driver for cpufreq. Although this does not affect anything, I think we should only have one. so delete the second one because the first one is described in more detail. Signed-off-by: Wang Long --- Documentation/cpu-freq/user-guide.txt | 2 -- 1 file changed,

[PATCH] Documentation: cpu-freq: delete duplicate description of sysfs interface 'scaling_driver'

cond] scaling_driver :Hardware driver for cpufreq. Although this does not affect anything, I think we should only have one. so delete the second one because the first one is described in more detail. Signed-off-by: Wang Long --- Documentation/cpu-freq/user-guide.txt | 2 -- 1 file changed,

[PATCH v2] Documentation: kasan: fix a typo

This patch just fix a typo (s/witch/which) Signed-off-by: Wang Long --- Documentation/kasan.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/kasan.txt b/Documentation/kasan.txt index 092fc10..063095a 100644 --- a/Documentation/kasan.txt +++ b/Documentation

[PATCH] Documentation: kasan: fix a typo

This patch just fix a typo (s/witch/which) Signed-off-by: Wang Long --- Documentation/kasan.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/kasan.txt b/Documentation/kasan.txt index 092fc10..38feb38 100644 --- a/Documentation/kasan.txt +++ b/Documentation

[PATCH] kasan: Remove duplicate definition of the macro KASAN_FREE_PAGE

This patch just remove duplicate definition of the macro KASAN_FREE_PAGE in mm/kasan/kasan.h Signed-off-by: Wang Long --- mm/kasan/kasan.h | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 4986b0a..c242adf 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan

[PATCH v2] ramoops: make it possible to change mem_type param.

If we set ramoops.mem_type=1 in command line, the current code can not change mem_type to 1, because it is assigned to 0 in function ramoops_register_dummy. This patch make it possible to change mem_type parameter in command line. Signed-off-by: Wang Long Acked-by: Tony Lindgren --- fs/pstore

[PATCH] ramoops: make it possible to change mem_type param.

If we set ramoops.mem_type=1 in command line, the current code can not change mem_type to 1, because it is assigned to 0 in function ramoops_register_dummy. This patch make it possible to change mem_type parameter in command line. Signed-off-by: Wang Long --- fs/pstore/ram.c | 4 ++-- 1 file

[PATCH] fs/pstore: update the backend parameter in pstore module

/parameters/backend (null) Signed-off-by: Wang Long --- fs/pstore/platform.c | 6 ++ 1 file changed, 6 insertions(+) diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index c4c9a10..a52c218 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -456,6 +456,12 @@ int

[request for stable inclusion 3.10 and 3.12] Fix CVE-2014-8173

Hi Greg and Jiri, The following patch commit ee53664bda169f519ce3c6a22d378f0b946c8178 mm: Fix NULL pointer dereference in madvise(MADV_WILLNEED) support fix CVE-2014-8173. I wish you could merge this fix into stable 3.10 and 3.12, because the linux kernel before 3.13 on NUMA systems is affected

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