From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Sasha Levin <sashal@kernel.org>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH AUTOSEL 4.9 13/42] powerpc/book3s64/hash: Add cond_resched to avoid soft lockup warning
Date: Wed, 11 Dec 2019 10:34:41 -0500 [thread overview]
Message-ID: <20191211153510.23861-13-sashal@kernel.org> (raw)
In-Reply-To: <20191211153510.23861-1-sashal@kernel.org>
From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
[ Upstream commit 16f6b67cf03cb43db7104acb2ca877bdc2606c92 ]
With large memory (8TB and more) hotplug, we can get soft lockup
warnings as below. These were caused by a long loop without any
explicit cond_resched which is a problem for !PREEMPT kernels.
Avoid this using cond_resched() while inserting hash page table
entries. We already do similar cond_resched() in __add_pages(), see
commit f64ac5e6e306 ("mm, memory_hotplug: add scheduling point to
__add_pages").
rcu: 3-....: (24002 ticks this GP) idle=13e/1/0x4000000000000002 softirq=722/722 fqs=12001
(t=24003 jiffies g=4285 q=2002)
NMI backtrace for cpu 3
CPU: 3 PID: 3870 Comm: ndctl Not tainted 5.3.0-197.18-default+ #2
Call Trace:
dump_stack+0xb0/0xf4 (unreliable)
nmi_cpu_backtrace+0x124/0x130
nmi_trigger_cpumask_backtrace+0x1ac/0x1f0
arch_trigger_cpumask_backtrace+0x28/0x3c
rcu_dump_cpu_stacks+0xf8/0x154
rcu_sched_clock_irq+0x878/0xb40
update_process_times+0x48/0x90
tick_sched_handle.isra.16+0x4c/0x80
tick_sched_timer+0x68/0xe0
__hrtimer_run_queues+0x180/0x430
hrtimer_interrupt+0x110/0x300
timer_interrupt+0x108/0x2f0
decrementer_common+0x114/0x120
--- interrupt: 901 at arch_add_memory+0xc0/0x130
LR = arch_add_memory+0x74/0x130
memremap_pages+0x494/0x650
devm_memremap_pages+0x3c/0xa0
pmem_attach_disk+0x188/0x750
nvdimm_bus_probe+0xac/0x2c0
really_probe+0x148/0x570
driver_probe_device+0x19c/0x1d0
device_driver_attach+0xcc/0x100
bind_store+0x134/0x1c0
drv_attr_store+0x44/0x60
sysfs_kf_write+0x64/0x90
kernfs_fop_write+0x1a0/0x270
__vfs_write+0x3c/0x70
vfs_write+0xd0/0x260
ksys_write+0xdc/0x130
system_call+0x5c/0x68
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191001084656.31277-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/mm/hash_utils_64.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index de1d8cdd29915..2dc1fc445f357 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -300,6 +300,7 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
if (ret < 0)
break;
+ cond_resched();
#ifdef CONFIG_DEBUG_PAGEALLOC
if (debug_pagealloc_enabled() &&
(paddr >> PAGE_SHIFT) < linear_map_hash_count)
--
2.20.1
next prev parent reply other threads:[~2019-12-11 15:38 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-11 15:34 [PATCH AUTOSEL 4.9 01/42] scsi: mpt3sas: Fix clear pending bit in ioctl status Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 02/42] scsi: lpfc: Fix locking on mailbox command completion Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 03/42] Input: atmel_mxt_ts - disable IRQ across suspend Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 04/42] iommu/tegra-smmu: Fix page tables in > 4 GiB memory Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 05/42] scsi: target: compare full CHAP_A Algorithm strings Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 06/42] scsi: lpfc: Fix SLI3 hba in loop mode not discovering devices Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 07/42] scsi: csiostor: Don't enable IRQs too early Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 08/42] powerpc/pseries: Mark accumulate_stolen_time() as notrace Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 09/42] powerpc/pseries: Don't fail hash page table insert for bolted mapping Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 10/42] dma-debug: add a schedule point in debug_dma_dump_mappings() Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 11/42] clocksource/drivers/asm9260: Add a check for of_clk_get Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 12/42] powerpc/security/book3s64: Report L1TF status in sysfs Sasha Levin
2019-12-11 15:34 ` Sasha Levin [this message]
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 14/42] jbd2: Fix statistics for the number of logged blocks Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 15/42] scsi: tracing: Fix handling of TRANSFER LENGTH == 0 for READ(6) and WRITE(6) Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 16/42] scsi: lpfc: Fix duplicate unreg_rpi error in port offline flow Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 17/42] clk: qcom: Allow constant ratio freq tables for rcg Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 18/42] irqchip/irq-bcm7038-l1: Enable parent IRQ if necessary Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 19/42] irqchip: ingenic: Error out if IRQ domain creation failed Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 20/42] mfd: mfd-core: Honour Device Tree's request to disable a child-device Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 21/42] fs/quota: handle overflows of sysctl fs.quota.* and report as unsigned long Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 22/42] scsi: lpfc: fix: Coverity: lpfc_cmpl_els_rsp(): Null pointer dereferences Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 23/42] scsi: ufs: fix potential bug which ends in system hang Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 24/42] powerpc/pseries/cmm: Implement release() function for sysfs device Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 25/42] powerpc/security: Fix wrong message when RFI Flush is disable Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 26/42] scsi: atari_scsi: sun3_scsi: Set sg_tablesize to 1 instead of SG_NONE Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 27/42] clk: pxa: fix one of the pxa RTC clocks Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 28/42] bcache: at least try to shrink 1 node in bch_mca_scan() Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 29/42] ext4: fix a bug in ext4_wait_for_tail_page_commit Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 30/42] HID: Improve Windows Precision Touchpad detection Sasha Levin
2019-12-11 15:34 ` [PATCH AUTOSEL 4.9 31/42] ext4: work around deleting a file with i_nlink == 0 safely Sasha Levin
2019-12-11 15:35 ` [PATCH AUTOSEL 4.9 32/42] scsi: pm80xx: Fix for SATA device discovery Sasha Levin
2019-12-11 15:35 ` [PATCH AUTOSEL 4.9 33/42] scsi: scsi_debug: num_tgts must be >= 0 Sasha Levin
2019-12-11 15:35 ` [PATCH AUTOSEL 4.9 34/42] scsi: target: iscsi: Wait for all commands to finish before freeing a session Sasha Levin
2019-12-11 15:35 ` [PATCH AUTOSEL 4.9 35/42] gpio: mpc8xxx: Don't overwrite default irq_set_type callback Sasha Levin
2019-12-11 15:35 ` [PATCH AUTOSEL 4.9 36/42] scripts/kallsyms: fix definitely-lost memory leak Sasha Levin
2019-12-11 15:35 ` [PATCH AUTOSEL 4.9 37/42] cdrom: respect device capabilities during opening action Sasha Levin
2019-12-11 15:35 ` [PATCH AUTOSEL 4.9 38/42] perf regs: Make perf_reg_name() return "unknown" instead of NULL Sasha Levin
2019-12-11 15:35 ` [PATCH AUTOSEL 4.9 39/42] libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h Sasha Levin
2019-12-11 15:35 ` [PATCH AUTOSEL 4.9 40/42] s390/cpum_sf: Check for SDBT and SDB consistency Sasha Levin
2019-12-11 15:35 ` [PATCH AUTOSEL 4.9 41/42] ocfs2: fix passing zero to 'PTR_ERR' warning Sasha Levin
2019-12-11 15:35 ` [PATCH AUTOSEL 4.9 42/42] kernel: sysctl: make drop_caches write-only Sasha Levin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191211153510.23861-13-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=aneesh.kumar@linux.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mpe@ellerman.id.au \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox