2:45 a.m.
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
git://internal_merge_and_test_tree devel-hourly-2017021823
commit 2acdde7750ea3a261f08f34e39ba0652ebc8c3d5
Merge: 6a6281c 947a7ea
Author: 0day robot <fengguang.wu(a)intel.com>
AuthorDate: Sun Feb 19 02:26:32 2017 +0800
Commit: 0day robot <fengguang.wu(a)intel.com>
CommitDate: Sun Feb 19 02:26:32 2017 +0800
Merge 'dax/wlist' into devel-hourly-2017021823
2acdde7750 Merge 'dax/wlist' into devel-hourly-2017021823
+--------------------------------------------------+----+
| | |
+--------------------------------------------------+----+
| boot_successes | 0 |
| boot_failures | 39 |
| INFO:suspicious_RCU_usage | 38 |
| INFO:task_blocked_for_more_than#seconds | 36 |
| INFO:lockdep_is_turned_off | 35 |
| Kernel_panic-not_syncing:hung_task:blocked_tasks | 36 |
+--------------------------------------------------+----+
[ 4.663240] Duration of test: 742146576 ns
[ 4.663959] Average test time: 743132709
[ 4.664398] Testing concurrent rhashtable access from 10 threads
[ 8.729714]
[ 8.732017] ===============================
[ 8.732486] [ INFO: suspicious RCU usage. ]
[ 8.733014] 4.10.0-rc8-07697-g2acdde7 #1 Not tainted
[ 8.733566] -------------------------------
[ 8.734052] lib/rhashtable.c:1126 suspicious rcu_dereference_protected() usage!
[ 8.735014]
[ 8.735014] other info that might help us debug this:
[ 8.735014]
[ 8.735865]
[ 8.735865] rcu_scheduler_active = 2, debug_locks = 0
[ 8.736579] 1 lock held by rhashtable_thra/176:
[ 8.737178] #0: (rcu_read_lock){......}, at: [<ffffffff9bfa7b5d>]
thread_lookup_test+0xad/0x540
[ 8.738233]
[ 8.738233] stack backtrace:
[ 8.738725] CPU: 0 PID: 176 Comm: rhashtable_thra Not tainted 4.10.0-rc8-07697-g2acdde7
#1
[ 8.739620] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.9.3-20161025_171302-gandalf 04/01/2014
[ 8.740795] Call Trace:
[ 8.741080] dump_stack+0x19/0x20
[ 8.741443] lockdep_rcu_suspicious+0xfe/0x110
[ 8.741948] rht_bucket_nested+0xf0/0x230
[ 8.742403] thread_lookup_test+0x214/0x540
[ 8.742944] ? thread_lookup_test+0xad/0x540
[ 8.743492] ? jhash+0x220/0x220
[ 8.743872] ? rhashtable_insert_slow+0x29/0x110
[ 8.744390] ? insert_retry+0x251/0x5f0
[ 8.745032] threadfunc+0x141/0x6f0
[ 8.745414] ? trace_hardirqs_on+0xd/0x10
[ 8.745856] ? __kthread_parkme+0xdb/0x100
[ 8.746293] kthread+0x1cb/0x1e0
[ 8.746647] ? insert_retry+0x5f0/0x5f0
[ 8.747267] ? __kthread_create_on_node+0x2e0/0x2e0
[ 8.747819] ret_from_fork+0x31/0x40
[ 13.973510] Started 10 threads, 0 failed
[ 14.186234] test_bitmap: all 460506 tests passed
[ 14.186864] test_uuid: all 18 tests passed
[ 14.191804] crc32: CRC_LE_BITS = 8, CRC_BE BITS = 8
[ 14.192370] crc32: self tests passed, processed 225944 bytes in 2091318 nsec
git bisect start 171f40b4581864c00a8159f6ba19dd02d012bf26
7089db84e356562f8ba737c29e472cc42d530dbc --
git bisect good 6f4eabb22829ac3a4b91b8636f6e6742fc895f32 # 20:07 33+ 0 Merge
'linux-review/simran-singhal/staging-rtl8192u-fixing-white-space-issue/20170215-043641'
into devel-hourly-2017021823
git bisect bad 3b5dc5d37acd8ad092d764b8a6e2fab3e73a0103 # 20:24 0- 8 Merge
'linux-review/Florian-Westphal/netfilter-nat-remove-incorrect-debug-assert/20170209-063353'
into devel-hourly-2017021823
git bisect bad c907b1dfd74ac2da5d2096f7d3c222e6bd69471e # 20:52 1- 8 Merge
'pwm/for-4.11/acpi' into devel-hourly-2017021823
git bisect good 902585b2d89a02329b31335d8f2ccc177773854b # 21:13 35+ 36 Merge
'mellanox/queue-rc' into devel-hourly-2017021823
git bisect good 7fda1dcd5c5e28d035aeab337342b37c3eac256b # 21:27 35+ 36 Merge
'linux-review/Ming-Lei/block-loop-fix-race-between-I-O-and-set_status/20170211-114516'
into devel-hourly-2017021823
git bisect good 1634f155d118930b9699c6c792f8029fca49769b # 21:43 34+ 36 Merge
'pci/pci/host-hv' into devel-hourly-2017021823
git bisect bad 46d151895c5c82dbf6f9bbe35e5f33063f019081 # 21:55 0- 3 Merge
'linux-review/Dmitry-Torokhov/gpio-return-NULL-from-gpiod_get_optional-when-GPIOLIB-is-disabled/20170213-091717'
into devel-hourly-2017021823
git bisect good 6a6281c7fe53e49cbe42c3505295e9811b124f89 # 22:08 35+ 37 Merge
'linux-review/Joe-Perches/compiler-compiler-gcc-Add-__fallthrough/20170211-050556'
into devel-hourly-2017021823
git bisect bad 2acdde7750ea3a261f08f34e39ba0652ebc8c3d5 # 22:35 0- 6 Merge
'dax/wlist' into devel-hourly-2017021823
git bisect good e73639b1a67abc581c3b7671556a439c41353bca # 22:58 35+ 37 fold
list.h
git bisect good 947a7ea93f3d85ddc885b02550ce263f15921544 # 23:09 35+ 39 Convert
semaphores to use waitlists
# first bad commit: [2acdde7750ea3a261f08f34e39ba0652ebc8c3d5] Merge 'dax/wlist'
into devel-hourly-2017021823
git bisect good 6a6281c7fe53e49cbe42c3505295e9811b124f89 # 23:18 105+ 142 Merge
'linux-review/Joe-Perches/compiler-compiler-gcc-Add-__fallthrough/20170211-050556'
into devel-hourly-2017021823
git bisect good 947a7ea93f3d85ddc885b02550ce263f15921544 # 23:27 105+ 143 Convert
semaphores to use waitlists
# extra tests with CONFIG_DEBUG_INFO_REDUCED
git bisect bad 2acdde7750ea3a261f08f34e39ba0652ebc8c3d5 # 23:43 5- 14 Merge
'dax/wlist' into devel-hourly-2017021823
# extra tests on HEAD of linux-devel/devel-hourly-2017021823
git bisect bad 171f40b4581864c00a8159f6ba19dd02d012bf26 # 23:43 0- 23 0day
head guard for 'devel-hourly-2017021823'
# extra tests on tree/branch linux-devel/devel-hourly-2017021823
git bisect bad 171f40b4581864c00a8159f6ba19dd02d012bf26 # 23:45 0- 23 0day
head guard for 'devel-hourly-2017021823'
---
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