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Date: Fri, 7 Mar 2014 17:09:11 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Christoph Lameter <cl@...ux.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
linux-kernel@...r.kernel.org
Subject: [percpu] BUG: using __this_cpu_add() in preemptible [00000000]
code: init/1
Christoph,
FYI, here is another bisect result and call trace. Interestingly, next-20140307
no longer triggers this BUG message.
commit a25982c15ae5298520033cd5848a82adf6a97376
Author: Christoph Lameter <cl@...ux.com>
AuthorDate: Thu Mar 6 11:05:21 2014 +1100
percpu: add preemption checks to __this_cpu ops
+---------------------------------------------------------+------------+------------+---------------+
| | 26d02cfa38 | a25982c15a | next-20140306 |
+---------------------------------------------------------+------------+------------+---------------+
| boot_successes | 59 | 0 | 0 |
| boot_failures | 1 | 20 | 19 |
| WARNING:CPU:PID:at_arch/x86/kernel/cpu/amd.c:init_amd() | 1 | 0 | 3 |
| backtrace:init_amd | 1 | 0 | 3 |
| backtrace:warn_slowpath_fmt | 1 | 0 | 3 |
| BUG:using__this_cpu_add()in_preemptible_code:init | 0 | 20 | 19 |
| BUG:using__this_cpu_add()in_preemptible_code:trinity | 0 | 3 | 1 |
| backtrace:do_execve | 0 | 20 | 19 |
| backtrace:run_init_process | 0 | 20 | 19 |
| backtrace:user_path_at | 0 | 20 | 19 |
| backtrace:SyS_faccessat | 0 | 20 | 19 |
| backtrace:SyS_access | 0 | 20 | 19 |
| backtrace:do_sys_open | 0 | 19 | 12 |
| backtrace:SyS_open | 0 | 19 | 12 |
| backtrace:vm_mmap_pgoff | 0 | 7 | |
| backtrace:SyS_mmap_pgoff | 0 | 7 | |
| BUG:using__this_cpu_add()in_preemptible_code:getty | 0 | 1 | |
| BUG:using__this_cpu_add()in_preemptible_code:kworker/u4 | 0 | 4 | |
| backtrace:vm_munmap | 0 | 4 | |
| backtrace:SyS_munmap | 0 | 4 | |
| backtrace:____call_usermodehelper | 0 | 4 | |
| backtrace:vfs_stat | 0 | 1 | 3 |
| backtrace:SyS_stat64 | 0 | 1 | 3 |
| backtrace:do_group_exit | 0 | 1 | |
| backtrace:SyS_exit_group | 0 | 1 | |
| BUG:using__this_cpu_add()in_preemptible_code:sh | 0 | 0 | 2 |
| BUG:using__this_cpu_add()in_preemptible_code:rc.local | 0 | 0 | 1 |
| backtrace:SyS_execve | 0 | 0 | 3 |
| BUG:using__this_cpu_add()in_preemptible_code:grep | 0 | 0 | 1 |
| BUG:using__this_cpu_add()in_preemptible_code:plymouthd | 0 | 0 | 1 |
| BUG:using__this_cpu_add()in_preemptible_code:-trinity | 0 | 0 | 1 |
+---------------------------------------------------------+------------+------------+---------------+
[ 9.883984] Freeing unused kernel memory: 1780K (c1aab000 - c1c68000)
[ 9.885550] Write protecting the kernel text: 7012k
[ 9.886955] Write protecting the kernel read-only data: 3264k
[ 9.888463] BUG: using __this_cpu_add() in preemptible [00000000] code: init/1
[ 9.889377] caller is __this_cpu_preempt_check+0x1f/0x27
[ 9.890038] CPU: 1 PID: 1 Comm: init Not tainted 3.14.0-rc5-next-20140306-07138-g0ffb2fe #3
[ 9.891044] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.891728] 00000000 00000000 cdc6dd04 c16c7a68 00000001 cdc6dd28 c1273ca2 c191d4e5
[ 9.892815] cdc6dd40 00000000 cdc703b8 00000001 cdc6dd40 ce793cc0 cdc6dd6c c1273ce3
[ 9.893897] cdc6dd40 00000028 c191d539 c195d696 68745f5f 635f7369 615f7570 29286464
[ 9.894983] Call Trace:
[ 9.895312] [<c16c7a68>] dump_stack+0x49/0x73
[ 9.895849] [<c1273ca2>] check_preemption_disabled+0xb0/0xc3
[ 9.896557] [<c1273ce3>] __this_cpu_preempt_check+0x1f/0x27
[ 9.897391] [<c10278bb>] ? kvm_clock_read+0x1e/0x31
[ 9.898109] [<c16c5c06>] __slab_free+0x2c/0x422
[ 9.898756] [<c104f65d>] ? sched_clock_local+0x11/0xfa
[ 9.899498] [<c10a9d49>] ? ptlock_free+0x10/0x12
[ 9.900174] [<c104f98c>] ? sched_clock_cpu+0xe3/0x10d
[ 9.900884] [<c1028f9e>] ? lookup_address+0x1c/0x1f
[ 9.901584] [<c10be778>] kmem_cache_free+0x142/0x14b
[ 9.902322] [<c10be778>] ? kmem_cache_free+0x142/0x14b
[ 9.903065] [<c10a9d49>] ? ptlock_free+0x10/0x12
[ 9.903716] [<c10a9d49>] ? ptlock_free+0x10/0x12
[ 9.904382] [<c10a9d49>] ptlock_free+0x10/0x12
[ 9.905036] [<c102a953>] ___pte_free_tlb+0x17/0x4c
[ 9.905710] [<c10a7fe8>] free_pgd_range+0x13f/0x160
[ 9.906411] [<c10c9628>] setup_arg_pages+0x235/0x27f
[ 9.917213] [<c12ed5a5>] ? get_random_int+0x60/0x77
[ 9.917913] [<c10f9c8b>] load_elf_binary+0x2e9/0xb95
[ 9.918656] [<c1273cc2>] ? debug_smp_processor_id+0xd/0xf
[ 9.919439] [<c10c9c0b>] search_binary_handler+0x65/0x130
[ 9.920238] [<c10ca90c>] do_execve+0x3a4/0x4ad
[ 9.920874] [<c100037c>] run_init_process+0x1c/0x1e
[ 9.921610] [<c16c1031>] kernel_init+0x34/0xb8
[ 9.922260] [<c16d8037>] ret_from_kernel_thread+0x1b/0x28
[ 9.923067] [<c16c0ffd>] ? rest_init+0xa1/0xa1
git bisect start 0ffb2fe7b9c30082876fa3a17da018bf0632cf03 09de192242d86ede449146ac423effca53bc1810 --
git bisect bad 439cde1f3d8230f858c0a55902381d24cd7a2df2 # 12:13 0- 3 Merge branch 'akpm/master'
git bisect good ce34778eb4d9fa0aaaeae76c1068026ee5255fd7 # 13:30 20+ 4 Merge branch 'akpm-current/current'
git bisect good 117314461e82adabb6b78dcb03259da75b50833b # 13:43 20+ 0 mm: don't implictly include linux/mm.h in linux/sched.h
git bisect bad 9d58cf7a388c1b4a06cb335980eb1bb1352ba876 # 13:50 0- 3 scheduler: replace __get_cpu_var with this_cpu_ptr
git bisect bad b2ff2cfebad92bebfca28bad650045821ed270c4 # 13:56 0- 6 tracing: replace __get_cpu_var uses with this_cpu_ptr
git bisect good 6fb77936481538ba05726345d86af4b39128a8a9 # 14:03 20+ 1 arm: move arm_dma_limit to setup_dma_zone
git bisect good d1cea07efbfa2723ca1b83d3a69d1f1000896d4d # 14:11 20+ 0 modules: use raw_cpu_write for initialization of per cpu refcount.
git bisect bad a25982c15ae5298520033cd5848a82adf6a97376 # 14:16 0- 1 percpu: add preemption checks to __this_cpu ops
git bisect good 26d02cfa385067c39c0407b022c01a011c2fbb51 # 14:30 20+ 0 net: replace __this_cpu_inc in route.c with raw_cpu_inc
# first bad commit: [a25982c15ae5298520033cd5848a82adf6a97376] percpu: add preemption checks to __this_cpu ops
git bisect good 26d02cfa385067c39c0407b022c01a011c2fbb51 # 14:46 60+ 1 net: replace __this_cpu_inc in route.c with raw_cpu_inc
git bisect bad 0ffb2fe7b9c30082876fa3a17da018bf0632cf03 # 14:46 0- 19 Add linux-next specific files for 20140306
git bisect good 634e62cc4d41b66a249d3407e97fd57997dbf918 # 15:06 60+ 1 Revert "percpu: add preemption checks to __this_cpu ops"
git bisect good c3bebc71c4bcdafa24b506adf0c1de3c1f77e2e0 # 15:20 60+ 0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
git bisect good 1b0a7e3263168a06d3858798e48c5a21d1c78d3c # 15:47 60+ 2 Add linux-next specific files for 20140307
Thanks,
Fengguang
View attachment "dmesg-quantal-athens-25:20140306200018:i386-randconfig-st0-03061742:3.14.0-rc5-next-20140306-07138-g0ffb2fe:3" of type "text/plain" (70069 bytes)
Download attachment "i386-randconfig-st0-03061742-0ffb2fe7b9c30082876fa3a17da018bf0632cf03-user_path_at+-x-57936.log" of type "application/octet-stream" (28136 bytes)
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