From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 98091] New: kernel/sched/core.c:7291 __might_sleep+0x87/0x90()
Date: Mon, 11 May 2015 18:15:49 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=98091
Bug ID: 98091
Summary: kernel/sched/core.c:7291 __might_sleep+0x87/0x90()
Product: File System
Version: 2.5
Kernel Version: 4.1.0-0.rc3.git0.1.fc23.x86_64+debug
Hardware: x86-64
OS: Linux
Tree: Fedora
Status: NEW
Severity: normal
Priority: P1
Component: ext4
Assignee: fs_ext4@kernel-bugs.osdl.org
Reporter: pomidorabelisima@gmail.com
Regression: No
[ 38.413109] ------------[ cut here ]------------
[ 38.413119] WARNING: CPU: 1 PID: 6 at kernel/sched/core.c:7291
__might_sleep+0x87/0x90()
[ 38.413124] do not call blocking ops when !TASK_RUNNING; state=2 set at
[] wait_for_completion_io+0xe5/0x140
...
[ 38.413200] CPU: 1 PID: 6 Comm: kworker/u16:0 Tainted: G C
4.1.0-0.rc3.git0.1.fc23.x86_64+debug #1
...
[ 38.413217] Call Trace:
[ 38.413221] [] dump_stack+0x4c/0x65
[ 38.413224] [] warn_slowpath_common+0x8a/0xc0
[ 38.413227] [] warn_slowpath_fmt+0x55/0x70
[ 38.413229] [] ? wait_for_completion_io+0xe5/0x140
[ 38.413230] [] ? wait_for_completion_io+0xe5/0x140
[ 38.413232] [] __might_sleep+0x87/0x90
[ 38.413235] [] generic_make_request_checks+0x3f/0x600
[ 38.413238] [] ? _raw_spin_unlock_irqrestore+0x36/0x70
[ 38.413241] [] ? trace_hardirqs_on_caller+0x13d/0x1e0
[ 38.413243] [] generic_make_request+0x27/0x130
[ 38.413250] [] raid1_unplug+0x108/0x160 [raid1]
[ 38.413253] [] blk_flush_plug_list+0x9a/0x260
[ 38.413256] [] io_schedule_timeout+0x120/0x130
[ 38.413258] [] wait_for_completion_io+0x107/0x140
[ 38.413260] [] ? wake_up_state+0x20/0x20
[ 38.413263] [] __blkdev_issue_zeroout+0x227/0x270
[ 38.413265] [] ? wait_for_completion_io+0x4a/0x140
[ 38.413268] [] blkdev_issue_zeroout+0xaa/0x100
[ 38.413271] [] ext4_ext_zeroout.isra.34+0x52/0x60
[ 38.413274] []
ext4_ext_handle_unwritten_extents+0x680/0x10d0
[ 38.413276] [] ext4_ext_map_blocks+0x527/0x13c0
[ 38.413279] [] ? ext4_map_blocks+0x179/0x510
[ 38.413281] [] ? ext4_map_blocks+0x179/0x510
[ 38.413283] [] ext4_map_blocks+0x19d/0x510
[ 38.413285] [] ext4_writepages+0x7fd/0x13e0
[ 38.413289] [] do_writepages+0x21/0x40
[ 38.413292] [] __writeback_single_inode+0x70/0xb00
[ 38.413294] [] writeback_sb_inodes+0x2c0/0x680
[ 38.413296] [] __writeback_inodes_wb+0xa2/0xd0
[ 38.413298] [] wb_writeback+0x413/0x790
[ 38.413300] [] ? get_nr_inodes+0x54/0x80
[ 38.413302] [] bdi_writeback_workfn+0x3b1/0x8c0
[ 38.413305] [] process_one_work+0x232/0x860
[ 38.413307] [] ? process_one_work+0x19b/0x860
[ 38.413309] [] ? worker_thread+0xda/0x470
[ 38.413312] [] worker_thread+0x53/0x470
[ 38.413314] [] ? process_one_work+0x860/0x860
[ 38.413316] [] kthread+0x104/0x120
[ 38.413319] [] ? local_clock+0x25/0x30
[ 38.413321] [] ? kthread_create_on_node+0x250/0x250
[ 38.413323] [] ret_from_fork+0x42/0x70
[ 38.413325] [] ? kthread_create_on_node+0x250/0x250
[ 38.413327] ---[ end trace ca9ea5620ac2e2e0 ]---
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