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Date: Thu, 29 Oct 2015 13:29:49 +0800
From: kernel test robot <ying.huang@...ux.intel.com>
TO: David Howells <dhowells@...hat.com>
CC: 0day robot <fengguang.wu@...el.com>
Subject: [lkp] [printk] 92ecc53f15: RIP: 0010:[<ffffffff834e7e45>]
[<ffffffff834e7e45>] vprintk_emit+0x155/0x560
FYI, we noticed the below changes on
https://github.com/0day-ci/linux David-Howells/printk-Don-t-discard-earlier-unprinted-messages-to-make-space/20151022-181856
commit 92ecc53f15ad184d46e568b9b502291b61ae2837 ("printk: Don't discard earlier unprinted messages to make space")
This patch may be not the root cause, but it may reveals another issues,
so still send it out.
+---------------------------------------------------+----------+------------+
| | v4.3-rc6 | 92ecc53f15 |
+---------------------------------------------------+----------+------------+
| boot_successes | 0 | 0 |
| boot_failures | 283 | 61 |
| BUG:kernel_boot_oversize | 274 | |
| BUG:kernel_boot_crashed | 5 | 11 |
| BUG:kernel_early-boot_crashed_Decompressing_Linux | 4 | |
| RIP:of_unittest | 0 | 14 |
| Kernel_panic-not_syncing:softlockup:hung_tasks | 0 | 30 |
| backtrace:kernel_init_freeable | 0 | 30 |
| backtrace:apic_timer_interrupt | 0 | 11 |
| RIP:lock_acquire | 0 | 4 |
| backtrace:of_unittest | 0 | 19 |
| RIP:vprintk_emit | 0 | 21 |
| RIP:__mutex_unlock_slowpath | 0 | 2 |
| RIP:_raw_spin_unlock_irqrestore | 0 | 5 |
| RIP:printk | 0 | 1 |
| RIP:mutex_lock_nested | 0 | 1 |
| RIP:__might_sleep | 0 | 1 |
| RIP:of_overlay_destroy | 0 | 1 |
+---------------------------------------------------+----------+------------+
[ 14.088391] ### dt-test ### of_unittest_destroy_tracked_overlays: overlay destroy failed for #6
[ 14.089431] of_overlay_destroy: Could not find overlay #6
[ 14.090238] ### dt-test ### of_unittest_destroy_tracked_overlays: overlay destroy failed for #6
[ 40.070004] Modules linked in:
[ 40.070004] RIP: 0010:[<ffffffff834e7e45>] [<ffffffff834e7e45>] vprintk_emit+0x155/0x560
[ 40.070004] Stack:
[ 40.070004] ffffffff847b3fc2 0000000000000053 0000000000000000 ffffffff83a6ee28
[ 40.070004] 0000000000000246 0000000000000006 0000000000000000 0000000000000000
[ 40.070004] 0000000000000006 ffff880015966198 0000000000000001 0000000000000000
[ 40.070004] Call Trace:
[ 40.070004] [<ffffffff834e839f>] vprintk_default+0x1f/0x30
[ 40.070004] [<ffffffff8356a172>] printk+0x48/0x50
[ 40.070004] [<ffffffff83c03eeb>] of_unittest+0x24f3/0x255c
[ 40.070004] [<ffffffff834002c9>] ? do_one_initcall+0x89/0x1f0
[ 40.070004] [<ffffffff83c019f8>] ? of_unittest_check_tree_linkage+0x93/0x93
[ 40.070004] [<ffffffff834002d9>] do_one_initcall+0x99/0x1f0
[ 40.070004] [<ffffffff834b7600>] ? parse_args+0x1f0/0x410
[ 40.070004] [<ffffffff834ae012>] ? __usermodehelper_set_disable_depth+0x42/0x50
[ 40.070004] [<ffffffff83bc3168>] kernel_init_freeable+0x119/0x19c
[ 40.070004] [<ffffffff838737f0>] ? rest_init+0xd0/0xd0
[ 40.070004] [<ffffffff838737fe>] kernel_init+0xe/0xe0
[ 40.070004] [<ffffffff8387b35f>] ret_from_fork+0x3f/0x70
[ 40.070004] [<ffffffff838737f0>] ? rest_init+0xd0/0xd0
[ 40.070004] Code: dc ff ff 44 8b 75 d0 41 01 c6 48 c7 c7 e0 d9 af 83 c7 05 63 5a 61 00 ff ff ff ff e8 26 28 39 00 e8 f1 3a ff ff 48 8b 7d c0 57 9d <0f> 1f 44 00 00 80 7d cf 00 44 89 f2 0f 84 48 01 00 00 48 83 c4
[ 40.070004] Kernel panic - not syncing: softlockup: hung tasks
[ 40.070004] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G L 4.3.0-rc6-00001-g92ecc53 #1
[ 40.070004] ffff880014803ea8 ffff880014803e18 ffffffff83670239 ffffffff83a2bc63
[ 40.070004] ffff880014803e98 ffffffff83569cde 0000000000000008 ffff880014803ea8
[ 40.070004] ffff880014803e40 ffff880014803e98 0000000000000000 0000000000000000
[ 40.070004] Call Trace:
[ 40.070004] <IRQ> [<ffffffff83670239>] dump_stack+0x4b/0x72
[ 40.070004] [<ffffffff83569cde>] panic+0xc6/0x203
[ 40.070004] [<ffffffff8352814c>] watchdog_timer_fn+0x1ec/0x1f0
[ 40.070004] [<ffffffff83527f60>] ? watchdog+0x40/0x40
[ 40.070004] [<ffffffff834fc4e7>] hrtimer_run_queues+0x127/0x2d0
[ 40.070004] [<ffffffff834fb8e7>] update_process_times+0x27/0x60
[ 40.070004] [<ffffffff8350a9f0>] tick_nohz_handler+0x70/0xe0
[ 40.070004] [<ffffffff834314a8>] local_apic_timer_interrupt+0x38/0x60
[ 40.070004] [<ffffffff8387d6ad>] smp_apic_timer_interrupt+0x3d/0x50
[ 40.070004] [<ffffffff8387bd64>] apic_timer_interrupt+0x84/0x90
[ 40.070004] <EOI> [<ffffffff834e7e3a>] ? vprintk_emit+0x14a/0x560
[ 40.070004] [<ffffffff834e7e45>] ? vprintk_emit+0x155/0x560
[ 40.070004] [<ffffffff834e839f>] vprintk_default+0x1f/0x30
[ 40.070004] [<ffffffff8356a172>] printk+0x48/0x50
[ 40.070004] [<ffffffff83c03eeb>] of_unittest+0x24f3/0x255c
[ 40.070004] [<ffffffff834002c9>] ? do_one_initcall+0x89/0x1f0
[ 40.070004] [<ffffffff83c019f8>] ? of_unittest_check_tree_linkage+0x93/0x93
[ 40.070004] [<ffffffff834002d9>] do_one_initcall+0x99/0x1f0
[ 40.070004] [<ffffffff834b7600>] ? parse_args+0x1f0/0x410
[ 40.070004] [<ffffffff834ae012>] ? __usermodehelper_set_disable_depth+0x42/0x50
[ 40.070004] [<ffffffff83bc3168>] kernel_init_freeable+0x119/0x19c
[ 40.070004] [<ffffffff838737f0>] ? rest_init+0xd0/0xd0
[ 40.070004] [<ffffffff838737fe>] kernel_init+0xe/0xe0
[ 40.070004] [<ffffffff8387b35f>] ret_from_fork+0x3f/0x70
[ 40.070004] [<ffffffff838737f0>] ? rest_init+0xd0/0xd0
[ 40.070004] Kernel Offset: 0x2400000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Elapsed time: 60
Thanks,
Ying Huang
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