RE: [of] c810c0a17e BUG: unable to handle kernel paging request at 6b6b6b6b
From: Wang, Alan 1. (NSB - CN/Hangzhou)
Date: Sun Oct 22 2017 - 22:16:47 EST
Hi Fengguang,
Sorry for that bug.
I had find the cause reason and I will send out new patch for this today.
Thanks.
Lixin
-----Original Message-----
From: Fengguang Wu [mailto:fengguang.wu@xxxxxxxxx]
Sent: Monday, October 23, 2017 2:29 AM
To: Wang, Alan 1. (NSB - CN/Hangzhou) <alan.1.wang@xxxxxxxxxxxxxxx>
Cc: wfg@xxxxxxxxxxxxxxx; Rob Herring <robh@xxxxxxxxxx>; Frank Rowand <frank.rowand@xxxxxxxx>; devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; LKP <lkp@xxxxxx>
Subject: [of] c810c0a17e BUG: unable to handle kernel paging request at 6b6b6b6b
Hi Lixin,
FYI, here is another bug triggered by
https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
commit c810c0a17e019d1e4345bcbc49b6eddcf5dd001d
Author: Lixin Wang <alan.1.wang@xxxxxxxxxxxxxxx>
AuthorDate: Fri Oct 20 09:59:09 2017 +0800
Commit: Rob Herring <robh@xxxxxxxxxx>
CommitDate: Fri Oct 20 10:27:33 2017 -0500
of: dynamic: fix memory leak related to properties of __of_node_dup
If a node with no properties is dynamically added, then a property is
dynamically added to the node, then the property is dynamically removed,
the result will be node->properties == NULL and node->deadprops != NULL.
Add a separate function to release the properties in both lists.
Signed-off-by: Lixin Wang <alan.1.wang@xxxxxxxxxxxxxxx>
Reviewed-by: Frank Rowand <frank.rowand@xxxxxxxx>
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
4ee7c0d964 of: overlay: make pr_err() string unique c810c0a17e of: dynamic: fix memory leak related to properties of __of_node_dup c810c0a17e of: dynamic: fix memory leak related to properties of __of_node_dup
+-------------------------------------------------------------+------------+------------+------------+
| |
| 4ee7c0d964 | c810c0a17e | c810c0a17e |
+-------------------------------------------------------------+------------+------------+------------+
| boot_successes | 1 | 0 | 0 |
| boot_failures | 47 | 15 | 15 |
| es#_lib.c:#ess_reset_at#:failed | 37 | 15 | 15 |
| WARNING:at_arch/x86/mm/tlb.c:#initialize_tlbstate_and_flush | 2 | 2 | 2 |
| EIP:initialize_tlbstate_and_flush | 2 | 2 | 2 |
| BUG:workqueue_lockup-pool | 10 | | |
| WARNING:kernel_stack | 1 | | |
| BUG:unable_to_handle_kernel | 0 | 15 | 15 |
| Oops:#[##] | 0 | 15 | 15 |
| EIP:property_list_free | 0 | 15 | 15 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 15 | 15 |
+-------------------------------------------------------------+------------+------------+------------+
[ 100.467439] OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8
[ 100.469350] OF: overlay: overlay #6 is not topmost [ 100.483290] BUG: unable to handle kernel paging request at 6b6b6b6b [ 100.484270] IP: property_list_free+0x8/0x6e [ 100.484895] *pde = 00000000 [ 100.485329] Oops: 0000 [#1] SMP [ 100.485817] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.14.0-rc1-00047-gc810c0a #1 [ 100.486932] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 100.488085] task: 8f43c040 task.stack: 8f43e000 [ 100.488712] EIP: property_list_free+0x8/0x6e [ 100.489324] EFLAGS: 00210202 CPU: 0 [ 100.489847] EAX: 00200246 EBX: 6b6b6b6b ECX: 00000004 EDX: 00000007 [ 100.492481] ESI: 8dced700 EDI: 828ea738 EBP: 8f43fe08 ESP: 8f43fe04 [ 100.493433] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 [ 100.494219] CR0: 80050033 CR2: 6b6b6b6b CR3: 02c1e000 CR4: 00000690 [ 100.495122] Call Trace:
[ 100.495498] of_node_release+0x7d/0xe9 [ 100.496066] kobject_put+0x132/0x19b [ 100.496586] of_node_put+0x2b/0x3b [ 100.497106] of_changeset_destroy+0x34/0x9a [ 100.497748] free_overlay_changeset+0x36/0xf1 [ 100.498360] of_overlay_remove+0x3d9/0x452 [ 100.498960] ? platform_device_put+0x2b/0x3b [ 100.499610] of_unittest_apply_revert_overlay_check+0x17b/0x297
[ 100.500665] of_unittest_overlay+0xc8a/0x1179 [ 100.501258] of_unittest+0xf74/0x1009 [ 100.501778] ? kobject_add+0x89/0x9d [ 100.502285] ? add_sysfs_fw_map_entry+0xa8/0xef [ 100.502986] ? of_unittest_overlay+0x1179/0x1179 [ 100.503672] do_one_initcall+0x10e/0x263 [ 100.504263] ? parse_args+0x23f/0x3bd [ 100.504883] ? kernel_init_freeable+0x222/0x3c6 [ 100.505613] kernel_init_freeable+0x24c/0x3c6 [ 100.506251] ? rest_init+0x43a/0x43a [ 100.506713] kernel_init+0x16/0x248 [ 100.507130] ret_from_fork+0x19/0x30 [ 100.507566] Code: 00 00 00 8b 50 24 89 53 28 89 58 24 3e 80 63 50 fb 83 05 90 d6 8b 84 01 83 15 94 d6 8b 84 00 58 5b 5d c3 55 89
e5 53 89 c3 eb 51 <8b> 03 83 05 98 d7 8b 84 01 83 15 9c d7 8b 84 00 e8 ea 3b 45 ff [ 100.510025] EIP: property_list_free+0x8/0x6e SS:ESP: 0068:8f43fe04
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD git bisect start 227bce24b050beee52867e026e92e03e944c8ce4 33d930e59a98fa10a0db9f56c7fa2f21a4aef9b9 --
git bisect bad c984b398ef43624c3d27240a22eada56263e9b90 # 18:26 B 0 3 19 4 Merge 'renesas-drivers/sh-pfc-for-v4.15' into devel-hourly-2017102111
git bisect bad 96eb39168a471cda84010eb8101a5ed8ea1643dc # 19:31 B 0 1 17 4 Merge 'daeinki-drm-exynos/fixes/exynos-drm-fixes-for-v4.14-rc5' into devel-hourly-2017102111
git bisect good c975db1a8af80e951a4cf9b6335dbf007cdc2910 # 20:41 G 10 0 10 14 Merge 'vkoul-soundwire/topic/patch_v1' into devel-hourly-2017102111
git bisect good 82cfe9bb8eadbcd33e85f0177c256a60c0264a1e # 21:28 G 11 0 11 11 Merge 'robclark/msm-next-wip' into devel-hourly-2017102111
git bisect bad 71e1ffe3feb6bd9741377292f6a2053ba8db3cb9 # 22:07 B 0 9 21 0 Merge 'kbuild/fixes' into devel-hourly-2017102111
git bisect good 748badd589d8a3e5224d8ebb5968dfe26665efe3 # 22:52 G 11 0 11 15 Merge 'linux-review/Willem-de-Bruijn/sock-correct-sk_wmem_queued-accounting-on-efault-in-tcp-zerocopy/20171021-060957' into devel-hourly-2017102111
git bisect good 183e80a3082ac768745b31465bd3360c997c8f69 # 23:33 G 11 0 11 15 Merge 'robh/dt/testing' into devel-hourly-2017102111
git bisect good a51e5ec261634da00b45480e367247fb303da406 # 00:51 G 11 0 11 15 Merge 'dm/for-4.15/dm' into devel-hourly-2017102111
git bisect bad a761d220ab2dcc898979a84a889e05bee2009176 # 01:08 B 0 1 13 0 Merge 'robh/dt/next' into devel-hourly-2017102111
git bisect good 87f242c119c403e8b948c8b95eca4ab6212fd1a9 # 01:32 G 11 0 11 13 of: overlay: expand check of whether overlay changeset can be removed
git bisect good e0a58f3e08d4b7fa8e2a4075c522f1a98c9e4cab # 01:57 G 11 0 10 10 of: overlay: remove a dependency on device node full_name
git bisect good a1d19bd4cf1febf0d5ff60243826a248bd20f1a5 # 03:45 G 11 0 10 14 of: overlay: pr_err from return NOTIFY_OK to overlay apply/remove
git bisect bad c810c0a17e019d1e4345bcbc49b6eddcf5dd001d # 05:31 B 0 2 19 5 of: dynamic: fix memory leak related to properties of __of_node_dup
git bisect good 4ee7c0d9649d472d31969b9cbb8151161db6a807 # 05:55 G 11 0 11 15 of: overlay: make pr_err() string unique
# first bad commit: [c810c0a17e019d1e4345bcbc49b6eddcf5dd001d] of: dynamic: fix memory leak related to properties of __of_node_dup
git bisect good 4ee7c0d9649d472d31969b9cbb8151161db6a807 # 06:42 G 30 0 29 44 of: overlay: make pr_err() string unique
# extra tests with CONFIG_DEBUG_INFO_REDUCED
git bisect bad c810c0a17e019d1e4345bcbc49b6eddcf5dd001d # 07:39 B 0 11 27 4 of: dynamic: fix memory leak related to properties of __of_node_dup
# extra tests on HEAD of linux-devel/devel-hourly-2017102111
git bisect bad 227bce24b050beee52867e026e92e03e944c8ce4 # 07:39 B 0 13 28 0 0day head guard for 'devel-hourly-2017102111'
# extra tests on tree/branch robh/for-next
git bisect bad c810c0a17e019d1e4345bcbc49b6eddcf5dd001d # 07:46 B 0 15 27 0 of: dynamic: fix memory leak related to properties of __of_node_dup
# extra tests with first bad commit reverted
git bisect good 773db3dc93897f3a5cc2fe3b9d9698696c9ea367 # 10:04 G 11 0 10 10 Revert "of: dynamic: fix memory leak related to properties of __of_node_dup"
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