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Date: Mon, 3 Jun 2013 18:57:54 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: fengguang.wu@...el.com,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc: linux-kernel@...r.kernel.org
Subject: [bisect done] [ 0.000000] WARNING: at mm/nobootmem.c:215
___alloc_bootmem_nopanic.constprop.5()
Greetings,
I got the below dmesg and the first bad commit is
commit 911af505ef407c2511106c224dd640f882f0f590
Author: Paul E. McKenney <paul.mckenney@...aro.org>
Date: Mon Feb 11 10:23:27 2013 -0800
rcu: Provide compile-time control for no-CBs CPUs
Currently, the only way to specify no-CBs CPUs is via the rcu_nocbs
kernel command-line parameter. This is inconvenient in some cases,
particularly for randconfig testing, so this commit adds a new set of
kernel configuration parameters. CONFIG_RCU_NOCB_CPU_NONE (the default)
retains the old behavior, CONFIG_RCU_NOCB_CPU_ZERO offloads callback
processing from CPU 0 (along with any other CPUs specified by the
rcu_nocbs boot-time parameter), and CONFIG_RCU_NOCB_CPU_ALL offloads
callback processing from all CPUs.
Signed-off-by: Paul E. McKenney <paul.mckenney@...aro.org>
Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
[ 0.000000] Checking if this processor honours the WP bit even in supervisor mode...Ok.
[ 0.000000] SLUB: HWalign=128, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000]
[ 0.000000]
[ 0.000000]
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: at /c/kernel-tests/src/linux/mm/nobootmem.c:215 ___alloc_bootmem_nopanic.constprop.5+0x79/0x15f()
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.10.0-rc1-00035-g297e580 #40
[ 0.000000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007
[ 0.000000] 00000000 00000000 c1a71ef8 c1588367 c1a71f20 c104d6d0 c199e148 c19b2567
[ 0.000000] 000000d7 c1cec5a5 c1cec5a5 00000001 00000001 00000000 c1a71f30 c104d709
[ 0.000000] 00000009 00000000 c1a71f64 c1cec5a5 00000000 00000000 00000000 c1ef260a
[ 0.000000] Call Trace:
[ 0.000000] [<c1588367>] dump_stack+0x16/0x18
[ 0.000000] [<c104d6d0>] warn_slowpath_common+0x74/0x8b
[ 0.000000] [<c1cec5a5>] ? ___alloc_bootmem_nopanic.constprop.5+0x79/0x15f
[ 0.000000] [<c1cec5a5>] ? ___alloc_bootmem_nopanic.constprop.5+0x79/0x15f
[ 0.000000] [<c104d709>] warn_slowpath_null+0x22/0x24
[ 0.000000] [<c1cec5a5>] ___alloc_bootmem_nopanic.constprop.5+0x79/0x15f
[ 0.000000] [<c1cec699>] ___alloc_bootmem.constprop.4+0xe/0x49
[ 0.000000] [<c1583dc5>] ? printk+0x3d/0x3f
[ 0.000000] [<c1cec859>] __alloc_bootmem+0x8/0xa
[ 0.000000] [<c1cf4f03>] alloc_bootmem_cpumask_var+0x17/0x1c
[ 0.000000] [<c1ce473b>] rcu_init+0xb9/0x309
[ 0.000000] [<c1ce7303>] ? perf_event_init+0x173/0x17a
[ 0.000000] [<c1cc1aa7>] start_kernel+0x22d/0x453
[ 0.000000] [<c1cc14cd>] ? repair_env_string+0x97/0x97
[ 0.000000] [<c1cc12da>] i386_start_kernel+0x90/0x94
[ 0.000000] ---[ end trace 5b01275a6144debd ]---
git bisect start 4237c09a63906b980741725da63f85e454caec02 v3.9 --
git bisect bad 73287a43cc79ca06629a88d1a199cd283f42456a # 0 2013-06-03 15:02:18 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
git bisect bad 5d434fcb255dec99189f1c58a06e4f56e12bf77d # 0 2013-06-03 15:08:57 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
git bisect good 507ffe4f3840ac24890a8123c702cf1b7fe4d33c # 10 2013-06-03 15:21:41 Merge tag 'tty-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
git bisect good 4a7b4d2360175f67ab2c58effeeb8362a3057c25 # 10 2013-06-03 15:28:44 x86: pageattr-test: remove srandom32 call
git bisect good 46d9be3e5eb01f71fc02653755d970247174b400 # 10 2013-06-03 16:30:29 Merge branch 'for-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
git bisect bad e0972916e8fe943f342b0dd1c9d43dbf5bc261c2 # 0 2013-06-03 16:34:11 Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 457d1772f1c1bcf37b2ae7fc8f1d6f303d1d5cf9 # 10 2013-06-03 16:52:58 uprobes/tracing: Generalize struct uprobe_trace_entry_head
git bisect good 56847d857cb0c3ee78c22ce776a26f88d9ffd4d4 # 10 2013-06-03 17:45:40 Merge branch 'akpm' (incoming from Andrew)
git bisect bad 8fcfae31719c0a6c03f2cf63f815b46d378d8be4 # 0 2013-06-03 17:49:28 Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
git bisect bad 8b425aa8f1acfe48aed919c7aadff2ed290fe969 # 0 2013-06-03 17:53:00 rcu: Rename n_nocb_gp_requests to need_future_gp
git bisect bad a488985851cf2facd2227bd982cc2c251df56268 # 0 2013-06-03 17:56:38 rcu: Distinguish "rcuo" kthreads by RCU flavor
git bisect bad dae6e64d2bcfd4b06304ab864c7e3a4f6b5fedf4 # 0 2013-06-03 18:00:10 rcu: Introduce proper blocking to no-CBs kthreads GP waits
git bisect bad 911af505ef407c2511106c224dd640f882f0f590 # 0 2013-06-03 18:03:42 rcu: Provide compile-time control for no-CBs CPUs
git bisect good 34ed62461ae4970695974afb9a60ac3df0086830 # 10 2013-06-03 18:09:43 rcu: Remove restrictions on no-CBs CPUs
git bisect good 34ed62461ae4970695974afb9a60ac3df0086830 # 38 2013-06-03 18:12:45 rcu: Remove restrictions on no-CBs CPUs
git bisect bad 297e5804fbed91ac58027d04e033540681763283 # 0 2013-06-03 18:13:19 exynos4-is: Add isp_dbg() macro
git bisect good 6318c0ec14d5f7aea22987223e1a99dbda7b1fd0 # 30 2013-06-03 18:49:20 Add linux-next specific files for 20130603
Thanks,
Fengguang
View attachment "dmesg-kvm-kbuild-1567-2013-06-01-18-03-22-3.10.0-rc1-00035-g297e580-40" of type "text/plain" (56913 bytes)
View attachment "297e5804fbed91ac58027d04e033540681763283-bisect.log" of type "text/plain" (17872 bytes)
View attachment ".config-bisect" of type "text/plain" (72068 bytes)
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