System freeze and NULL pointer dereference

[Alexey Khoroshilov]

Hello,

Syzcaller has detected a system freeze.
C reproducer and config are attached.
This trace is obtained on commit 85848b0f4074f04ab606f1e5dca296482033d54
from Linus tree. The problem was seen before on several versions from
Linus tree starting from a few commits before 4.17-rc-1.

May be induced failure is NULL pointer dereference in allocation from
getname_flags(). See log starting from:
[ 451.883708] BUG: unable to handle kernel NULL pointer dereference at
00000000000000f8


[ 144.369213] ata1: lost interrupt (Status 0x50)
[ 144.370773] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
frozen
[ 144.373062] ata1.00: failed command: READ DMA
[ 144.374463] ata1.00: cmd c8/00:00:00:00:00/00:00:00:00:00/e0 tag 0
dma 131072 out
[ 144.374463] res 40/00:01:00:00:00/00:00:00:00:00/a0 Emask
0x4 (timeout)
[ 144.378903] ata1.00: status: { DRDY }
[ 144.380243] ata1: soft resetting link
[ 144.538671] ata1.00: configured for MWDMA2
[ 144.540142] ata1: EH complete
[ 205.809190] ata1: lost interrupt (Status 0x50)
[ 205.810939] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
frozen
[ 205.812959] ata1.00: failed command: READ DMA
[ 205.814191] ata1.00: cmd c8/00:00:00:00:00/00:00:00:00:00/e0 tag 0
dma 131072 out
[ 205.814191] res 40/00:01:00:00:00/00:00:00:00:00/a0 Emask
0x4 (timeout)
[ 205.817971] ata1.00: status: { DRDY }
[ 205.819199] ata1: soft resetting link
[ 205.978227] ata1.00: configured for MWDMA2
[ 205.979392] ata1: EH complete
[ 246.752242] INFO: task kworker/u4:3:978 blocked for more than 120
seconds.
[ 246.754698] Tainted: G W 4.17.0-rc1+ #2
[ 246.756495] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 246.758798] kworker/u4:3 D25576 978 2 0x80000000
[ 246.760429] Workqueue: writeback wb_workfn (flush-8:0)
[ 246.761938] Call Trace:
[ 246.762727] ? __schedule+0x6a4/0x1a80
[ 246.763856] ? __sched_text_start+0x8/0x8
[ 246.765066] ? prepare_to_wait_exclusive+0x10e/0x250
[ 246.766447] schedule+0x77/0x1a0
[ 246.767364] io_schedule+0x17/0x60
[ 246.768324] bit_wait_io+0x12/0x90
[ 246.769295] __wait_on_bit_lock+0xbc/0x1c0
[ 246.770423] ? bit_wait+0x90/0x90
[ 246.771360] ? __brelse+0x74/0x90
[ 246.772313] out_of_line_wait_on_bit_lock+0xd2/0x110
[ 246.773706] ? __wait_on_bit_lock+0x1c0/0x1c0
[ 246.774934] ? init_wait_var_entry+0x1a0/0x1a0
[ 246.776174] ? jbd2_write_access_granted.part.10+0x171/0x2d0
[ 246.777714] __lock_buffer+0x47/0x50
[ 246.778671] do_get_write_access+0x794/0x1010
[ 246.779812] jbd2_journal_get_write_access+0x5e/0x90
[ 246.781101] __ext4_journal_get_write_access+0x5c/0x90
[ 246.782432] ext4_mb_mark_diskspace_used+0x19c/0xdf0
[ 246.783717] ? ext4_get_group_no_and_offset+0x13f/0x1e0
[ 246.785064] ? ext4_mb_regular_allocator+0xee0/0xee0
[ 246.786356] ? ext4_mb_use_preallocated.constprop.28+0x50/0xd90
[ 246.787860] ext4_mb_new_blocks+0xb04/0x3250
[ 246.788982] ? ext4_find_extent+0x633/0x950
[ 246.790044] ? ext4_ext_search_right+0x40a/0xab0
[ 246.791172] ? ext4_ext_next_allocated_block+0x10c/0x2b0
[ 246.792452] ext4_ext_map_blocks+0x1ad4/0x2f70
[ 246.793553] ? ext4_find_delalloc_cluster+0xb0/0xb0
[ 246.794733] ? find_get_entries_tag+0x870/0x870
[ 246.795842] ? __put_compound_page+0xb0/0xb0
[ 246.796894] ? ext4_es_lookup_extent+0x30a/0xa70
[ 246.798041] ? lock_acquire+0x10b/0x350
[ 246.798947] ? lock_acquire+0x10b/0x350
[ 246.799900] ext4_map_blocks+0xb48/0x15b0
[ 246.800897] ? ext4_issue_zeroout+0x140/0x140
[ 246.801938] ? jbd2__journal_start+0xf4/0x860
[ 246.802937] ? __ext4_journal_start_sb+0xf0/0x3e0
[ 246.804014] ? ext4_writepages+0x1310/0x30a0
[ 246.804979] ext4_writepages+0x190f/0x30a0
[ 246.805928] ? update_curr+0x26e/0x840
[ 246.806800] ? select_task_rq_fair+0x300/0x2e50
[ 246.807848] ? ext4_mark_inode_dirty+0x780/0x780
[ 246.808907] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 246.810071] ? update_curr+0x36c/0x840
[ 246.810913] ? ext4_mark_inode_dirty+0x780/0x780
[ 246.811970] ? do_writepages+0xfa/0x2b0
[ 246.812868] ? cpuacct_charge+0x266/0x410
[ 246.813784] do_writepages+0xfa/0x2b0
[ 246.814594] ? page_writeback_cpu_online+0x10/0x10
[ 246.815635] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 246.816730] ? __writeback_single_inode+0xd3/0xf30
[ 246.817775] __writeback_single_inode+0xd3/0xf30
[ 246.818779] ? sched_clock+0x5/0x10
[ 246.819561] writeback_sb_inodes+0x4a4/0xbd0
[ 246.820491] ? lock_acquire+0x10b/0x350
[ 246.821346] ? __writeback_single_inode+0xf30/0xf30
[ 246.822398] ? down_read_trylock+0x56/0xc0
[ 246.823300] ? trylock_super+0x1a/0xf0
[ 246.824123] __writeback_inodes_wb+0xf8/0x1e0
[ 246.825073] wb_writeback+0x72a/0xb60
[ 246.825836] ? writeback_inodes_wb.constprop.54+0x1b0/0x1b0
[ 246.826967] ? cpumask_next+0x1f/0x30
[ 246.827736] ? cpumask_next+0x1f/0x30
[ 246.828508] ? get_nr_dirty_inodes+0xbf/0x130
[ 246.829476] ? wb_workfn+0x526/0xe10
[ 246.830264] wb_workfn+0x526/0xe10
[ 246.830949] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 246.831874] ? inode_wait_for_writeback+0x30/0x30
[ 246.832747] ? process_one_work+0x9e8/0x1870
[ 246.833556] process_one_work+0xa95/0x1870
[ 246.834362] ? wq_update_unbound_numa+0x640/0x640
[ 246.835240] ? lock_acquire+0x10b/0x350
[ 246.835926] worker_thread+0xd3/0xf20
[ 246.836617] ? __kthread_parkme+0x16b/0x220
[ 246.837480] ? process_one_work+0x1870/0x1870
[ 246.838369] kthread+0x32d/0x3f0
[ 246.838982] ? kthread_create_worker_on_cpu+0xf0/0xf0
[ 246.839952] ret_from_fork+0x3a/0x50
[ 246.840680] INFO: task jbd2/sda-8:1127 blocked for more than 120 seconds.
[ 246.841965] Tainted: G W 4.17.0-rc1+ #2
[ 246.843131] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 246.844584] jbd2/sda-8 D27568 1127 2 0x80000000
[ 246.845655] Call Trace:
[ 246.846165] ? __schedule+0x6a4/0x1a80
[ 246.846876] ? __sched_text_start+0x8/0x8
[ 246.847664] ? prepare_to_wait+0x10e/0x290
[ 246.848503] ? lock_downgrade+0x5e0/0x5e0
[ 246.849375] ? bit_wait+0x90/0x90
[ 246.849985] schedule+0x77/0x1a0
[ 246.850602] io_schedule+0x17/0x60
[ 246.851247] bit_wait_io+0x12/0x90
[ 246.851857] __wait_on_bit+0x81/0x130
[ 246.852542] out_of_line_wait_on_bit+0xd2/0x110
[ 246.853389] ? __wait_on_bit+0x130/0x130
[ 246.854122] ? init_wait_var_entry+0x1a0/0x1a0
[ 246.854911] __wait_on_buffer+0x5d/0x70
[ 246.855633] jbd2_journal_commit_transaction+0x2ef0/0x5f90
[ 246.856647] ? journal_submit_commit_record+0xb30/0xb30
[ 246.857614] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 246.858540] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 246.859466] ? lock_acquire+0x10b/0x350
[ 246.860185] ? lock_acquire+0x10b/0x350
[ 246.860873] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 246.861788] ? init_timer_key+0x2c0/0x2c0
[ 246.862504] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 246.863383] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 246.864271] ? lock_acquire+0x10b/0x350
[ 246.864928] ? lock_acquire+0x10b/0x350
[ 246.865623] ? lock_timer_base+0x57/0x1a0
[ 246.866335] ? try_to_del_timer_sync+0xb0/0x100
[ 246.867135] ? _raw_spin_lock_irqsave+0x46/0x50
[ 246.867898] ? lock_timer_base+0x57/0x1a0
[ 246.868608] ? try_to_del_timer_sync+0xb0/0x100
[ 246.869412] ? detach_if_pending+0x3d0/0x3d0
[ 246.870170] ? kjournald2+0x1f0/0x7d0
[ 246.870801] kjournald2+0x1f0/0x7d0
[ 246.871432] ? jbd2_journal_init_inode+0x2a0/0x2a0
[ 246.872275] ? __sched_text_start+0x8/0x8
[ 246.872956] ? wait_woken+0x260/0x260
[ 246.873615] ? _raw_spin_unlock_irqrestore+0x2d/0x60
[ 246.874447] ? jbd2_journal_init_inode+0x2a0/0x2a0
[ 246.875246] kthread+0x32d/0x3f0
[ 246.875781] ? kthread_create_worker_on_cpu+0xf0/0xf0
[ 246.876631] ret_from_fork+0x3a/0x50
[ 246.877264] INFO: task bash:2661 blocked for more than 120 seconds.
[ 246.878334] Tainted: G W 4.17.0-rc1+ #2
[ 246.879292] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 246.880570] bash D26672 2661 2659 0x00000000
[ 246.881508] Call Trace:
[ 246.881926] ? __schedule+0x6a4/0x1a80
[ 246.882576] ? __sched_text_start+0x8/0x8
[ 246.883263] ? prepare_to_wait_exclusive+0x10e/0x250
[ 246.884105] schedule+0x77/0x1a0
[ 246.884642] io_schedule+0x17/0x60
[ 246.885249] bit_wait_io+0x12/0x90
[ 246.885788] __wait_on_bit_lock+0xbc/0x1c0
[ 246.886459] ? bit_wait+0x90/0x90
[ 246.886986] ? do_raw_spin_unlock+0x4f/0x240
[ 246.887685] out_of_line_wait_on_bit_lock+0xd2/0x110
[ 246.888486] ? __wait_on_bit_lock+0x1c0/0x1c0
[ 246.889242] ? init_wait_var_entry+0x1a0/0x1a0
[ 246.889936] ? jbd2_write_access_granted.part.10+0x171/0x2d0
[ 246.890832] __lock_buffer+0x47/0x50
[ 246.891418] do_get_write_access+0x794/0x1010
[ 246.892131] jbd2_journal_get_write_access+0x5e/0x90
[ 246.892899] __ext4_journal_get_write_access+0x5c/0x90
[ 246.893737] ext4_reserve_inode_write+0x164/0x220
[ 246.894505] ext4_mark_inode_dirty+0x132/0x780
[ 246.895229] ? ext4_dirty_inode+0x6a/0x90
[ 246.895863] ? ext4_expand_extra_isize+0x4d0/0x4d0
[ 246.896641] ? jbd2__journal_start+0x144/0x860
[ 246.897375] ? jbd2__journal_start+0xf4/0x860
[ 246.898059] ? __ext4_journal_start_sb+0xf0/0x3e0
[ 246.898762] ? ext4_dirty_inode+0x4f/0x90
[ 246.899396] ? ext4_setattr+0x2090/0x2090
[ 246.900077] ext4_dirty_inode+0x6a/0x90
[ 246.900696] __mark_inode_dirty+0x88a/0xfa0
[ 246.901366] ? dentry_needs_remove_privs.part.19+0x50/0x50
[ 246.902212] generic_update_time+0x1b6/0x2e0
[ 246.902859] ? dentry_needs_remove_privs.part.19+0x50/0x50
[ 246.903745] touch_atime+0x215/0x280
[ 246.904319] ? __atime_needs_update+0x900/0x900
[ 246.905061] ? fsnotify_first_mark+0x180/0x180
[ 246.905741] iterate_dir+0x435/0x520
[ 246.906313] __x64_sys_getdents+0x1bc/0x310
[ 246.906948] ? __ia32_sys_getdents+0x300/0x300
[ 246.907645] ? __do_page_fault+0x391/0xb60
[ 246.908289] ? __x64_sys_getdents+0x310/0x310
[ 246.908972] ? mm_fault_error+0x2b0/0x2b0
[ 246.909612] ? do_syscall_64+0x9f/0x470
[ 246.910190] do_syscall_64+0x9f/0x470
[ 246.910721] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 246.911466] RIP: 0033:0x7f003f310575
[ 246.911979] RSP: 002b:00007fff5541a660 EFLAGS: 00000246 ORIG_RAX:
000000000000004e
[ 246.913125] RAX: ffffffffffffffda RBX: 00000000009c0008 RCX:
00007f003f310575
[ 246.914175] RDX: 0000000000008000 RSI: 00000000009c0038 RDI:
0000000000000003
[ 246.915213] RBP: ffffffffffffffa8 R08: 00000000009c0038 R09:
0000000000200000
[ 246.916239] R10: 0000000000000008 R11: 0000000000000246 R12:
0000000000000000
[ 246.917271] R13: 00000000009c0038 R14: 000000000098f608 R15:
00000000009861f8
[ 246.918321] INFO: lockdep is turned off.
[ 267.249199] ata1: lost interrupt (Status 0x50)
[ 267.250888] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
frozen
[ 267.252927] ata1.00: failed command: READ DMA
[ 267.254274] ata1.00: cmd c8/00:00:00:00:00/00:00:00:00:00/e0 tag 0
dma 131072 out
[ 267.254274] res 40/00:01:00:00:00/00:00:00:00:00/a0 Emask
0x4 (timeout)
[ 267.258374] ata1.00: status: { DRDY }
[ 267.259637] ata1: soft resetting link
[ 267.418691] ata1.00: configured for MWDMA2
[ 267.420153] ata1: EH complete
[ 328.689200] ata1: lost interrupt (Status 0x50)
[ 328.690997] ata1.00: limiting speed to MWDMA1:PIO4
[ 328.692602] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
frozen
[ 328.694831] ata1.00: failed command: READ DMA
[ 328.696237] ata1.00: cmd c8/00:00:00:00:00/00:00:00:00:00/e0 tag 0
dma 131072 out
[ 328.696237] res 40/00:01:00:00:00/00:00:00:00:00/a0 Emask
0x4 (timeout)
[ 328.700688] ata1.00: status: { DRDY }
[ 328.702112] ata1: soft resetting link
[ 328.858518] ata1.00: configured for MWDMA1
[ 328.859946] ata1: EH complete
[ 369.632247] INFO: task kworker/u4:3:978 blocked for more than 120
seconds.
[ 369.634329] Tainted: G W 4.17.0-rc1+ #2
[ 369.636077] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 369.638447] kworker/u4:3 D25576 978 2 0x80000000
[ 369.640237] Workqueue: writeback wb_workfn (flush-8:0)
[ 369.641857] Call Trace:
[ 369.642715] ? __schedule+0x6a4/0x1a80
[ 369.643939] ? __sched_text_start+0x8/0x8
[ 369.645229] ? prepare_to_wait_exclusive+0x10e/0x250
[ 369.646787] schedule+0x77/0x1a0
[ 369.647852] io_schedule+0x17/0x60
[ 369.648876] bit_wait_io+0x12/0x90
[ 369.649910] __wait_on_bit_lock+0xbc/0x1c0
[ 369.651130] ? bit_wait+0x90/0x90
[ 369.652135] ? __brelse+0x74/0x90
[ 369.653133] out_of_line_wait_on_bit_lock+0xd2/0x110
[ 369.654577] ? __wait_on_bit_lock+0x1c0/0x1c0
[ 369.655869] ? init_wait_var_entry+0x1a0/0x1a0
[ 369.657176] ? jbd2_write_access_granted.part.10+0x171/0x2d0
[ 369.658806] __lock_buffer+0x47/0x50
[ 369.659858] do_get_write_access+0x794/0x1010
[ 369.661072] jbd2_journal_get_write_access+0x5e/0x90
[ 369.662419] __ext4_journal_get_write_access+0x5c/0x90
[ 369.663827] ext4_mb_mark_diskspace_used+0x19c/0xdf0
[ 369.665188] ? ext4_get_group_no_and_offset+0x13f/0x1e0
[ 369.666598] ? ext4_mb_regular_allocator+0xee0/0xee0
[ 369.667907] ? ext4_mb_use_preallocated.constprop.28+0x50/0xd90
[ 369.669381] ext4_mb_new_blocks+0xb04/0x3250
[ 369.670474] ? ext4_find_extent+0x633/0x950
[ 369.671560] ? ext4_ext_search_right+0x40a/0xab0
[ 369.672736] ? ext4_ext_next_allocated_block+0x10c/0x2b0
[ 369.674070] ext4_ext_map_blocks+0x1ad4/0x2f70
[ 369.675218] ? ext4_find_delalloc_cluster+0xb0/0xb0
[ 369.676481] ? find_get_entries_tag+0x870/0x870
[ 369.677659] ? __put_compound_page+0xb0/0xb0
[ 369.678771] ? ext4_es_lookup_extent+0x30a/0xa70
[ 369.679943] ? lock_acquire+0x10b/0x350
[ 369.680886] ? lock_acquire+0x10b/0x350
[ 369.681841] ext4_map_blocks+0xb48/0x15b0
[ 369.682841] ? ext4_issue_zeroout+0x140/0x140
[ 369.683909] ? jbd2__journal_start+0xf4/0x860
[ 369.684963] ? __ext4_journal_start_sb+0xf0/0x3e0
[ 369.686095] ? ext4_writepages+0x1310/0x30a0
[ 369.687140] ext4_writepages+0x190f/0x30a0
[ 369.688139] ? update_curr+0x26e/0x840
[ 369.689058] ? select_task_rq_fair+0x300/0x2e50
[ 369.690161] ? ext4_mark_inode_dirty+0x780/0x780
[ 369.691288] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 369.692428] ? update_curr+0x36c/0x840
[ 369.693291] ? ext4_mark_inode_dirty+0x780/0x780
[ 369.694336] ? do_writepages+0xfa/0x2b0
[ 369.695236] ? cpuacct_charge+0x266/0x410
[ 369.696165] do_writepages+0xfa/0x2b0
[ 369.696987] ? page_writeback_cpu_online+0x10/0x10
[ 369.698074] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 369.699227] ? __writeback_single_inode+0xd3/0xf30
[ 369.700313] __writeback_single_inode+0xd3/0xf30
[ 369.701371] ? sched_clock+0x5/0x10
[ 369.702190] writeback_sb_inodes+0x4a4/0xbd0
[ 369.703187] ? lock_acquire+0x10b/0x350
[ 369.703981] ? __writeback_single_inode+0xf30/0xf30
[ 369.705029] ? down_read_trylock+0x56/0xc0
[ 369.705881] ? trylock_super+0x1a/0xf0
[ 369.706702] __writeback_inodes_wb+0xf8/0x1e0
[ 369.707652] wb_writeback+0x72a/0xb60
[ 369.708464] ? writeback_inodes_wb.constprop.54+0x1b0/0x1b0
[ 369.709644] ? cpumask_next+0x1f/0x30
[ 369.710447] ? cpumask_next+0x1f/0x30
[ 369.711257] ? get_nr_dirty_inodes+0xbf/0x130
[ 369.712194] ? wb_workfn+0x526/0xe10
[ 369.712939] wb_workfn+0x526/0xe10
[ 369.713705] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 369.714775] ? inode_wait_for_writeback+0x30/0x30
[ 369.715772] ? process_one_work+0x9e8/0x1870
[ 369.716655] process_one_work+0xa95/0x1870
[ 369.717510] ? wq_update_unbound_numa+0x640/0x640
[ 369.718469] ? lock_acquire+0x10b/0x350
[ 369.719280] worker_thread+0xd3/0xf20
[ 369.720048] ? __kthread_parkme+0x16b/0x220
[ 369.720869] ? process_one_work+0x1870/0x1870
[ 369.721759] kthread+0x32d/0x3f0
[ 369.722443] ? kthread_create_worker_on_cpu+0xf0/0xf0
[ 369.723474] ret_from_fork+0x3a/0x50
[ 369.724225] INFO: task jbd2/sda-8:1127 blocked for more than 120 seconds.
[ 369.725565] Tainted: G W 4.17.0-rc1+ #2
[ 369.726697] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 369.728187] jbd2/sda-8 D27568 1127 2 0x80000000
[ 369.729236] Call Trace:
[ 369.729708] ? __schedule+0x6a4/0x1a80
[ 369.730449] ? __sched_text_start+0x8/0x8
[ 369.731257] ? prepare_to_wait+0x10e/0x290
[ 369.732057] ? lock_downgrade+0x5e0/0x5e0
[ 369.732798] ? bit_wait+0x90/0x90
[ 369.733456] schedule+0x77/0x1a0
[ 369.734099] io_schedule+0x17/0x60
[ 369.734744] bit_wait_io+0x12/0x90
[ 369.735426] __wait_on_bit+0x81/0x130
[ 369.736152] out_of_line_wait_on_bit+0xd2/0x110
[ 369.737000] ? __wait_on_bit+0x130/0x130
[ 369.737769] ? init_wait_var_entry+0x1a0/0x1a0
[ 369.738627] __wait_on_buffer+0x5d/0x70
[ 369.739387] jbd2_journal_commit_transaction+0x2ef0/0x5f90
[ 369.740396] ? journal_submit_commit_record+0xb30/0xb30
[ 369.741357] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 369.742282] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 369.743216] ? lock_acquire+0x10b/0x350
[ 369.743905] ? lock_acquire+0x10b/0x350
[ 369.744621] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 369.745548] ? init_timer_key+0x2c0/0x2c0
[ 369.746298] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 369.747229] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 369.748155] ? lock_acquire+0x10b/0x350
[ 369.748836] ? lock_acquire+0x10b/0x350
[ 369.749558] ? lock_timer_base+0x57/0x1a0
[ 369.750299] ? try_to_del_timer_sync+0xb0/0x100
[ 369.751144] ? _raw_spin_lock_irqsave+0x46/0x50
[ 369.751910] ? lock_timer_base+0x57/0x1a0
[ 369.752622] ? try_to_del_timer_sync+0xb0/0x100
[ 369.753415] ? detach_if_pending+0x3d0/0x3d0
[ 369.754172] ? kjournald2+0x1f0/0x7d0
[ 369.754793] kjournald2+0x1f0/0x7d0
[ 369.755431] ? jbd2_journal_init_inode+0x2a0/0x2a0
[ 369.756266] ? __sched_text_start+0x8/0x8
[ 369.756945] ? wait_woken+0x260/0x260
[ 369.757597] ? _raw_spin_unlock_irqrestore+0x2d/0x60
[ 369.758464] ? jbd2_journal_init_inode+0x2a0/0x2a0
[ 369.759305] kthread+0x32d/0x3f0
[ 369.759864] ? kthread_create_worker_on_cpu+0xf0/0xf0
[ 369.760754] ret_from_fork+0x3a/0x50
[ 369.761409] INFO: task rs:main Q:Reg:2544 blocked for more than 120
seconds.
[ 369.762607] Tainted: G W 4.17.0-rc1+ #2
[ 369.763582] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 369.764857] rs:main Q:Reg D27088 2544 1 0x00000000
[ 369.765768] Call Trace:
[ 369.766214] ? __schedule+0x6a4/0x1a80
[ 369.766831] ? __sched_text_start+0x8/0x8
[ 369.767517] ? prepare_to_wait_exclusive+0x10e/0x250
[ 369.768348] schedule+0x77/0x1a0
[ 369.768877] io_schedule+0x17/0x60
[ 369.769460] bit_wait_io+0x12/0x90
[ 369.770047] __wait_on_bit_lock+0xbc/0x1c0
[ 369.770708] ? bit_wait+0x90/0x90
[ 369.771289] ? do_raw_spin_unlock+0x4f/0x240
[ 369.771981] out_of_line_wait_on_bit_lock+0xd2/0x110
[ 369.772805] ? __wait_on_bit_lock+0x1c0/0x1c0
[ 369.773541] ? init_wait_var_entry+0x1a0/0x1a0
[ 369.774295] ? jbd2_write_access_granted.part.10+0x171/0x2d0
[ 369.775244] __lock_buffer+0x47/0x50
[ 369.775802] do_get_write_access+0x794/0x1010
[ 369.776506] jbd2_journal_get_write_access+0x5e/0x90
[ 369.777305] __ext4_journal_get_write_access+0x5c/0x90
[ 369.778129] ext4_reserve_inode_write+0x164/0x220
[ 369.778857] ext4_mark_inode_dirty+0x132/0x780
[ 369.779581] ? ext4_dirty_inode+0x6a/0x90
[ 369.780233] ? ext4_expand_extra_isize+0x4d0/0x4d0
[ 369.780968] ? jbd2__journal_start+0x144/0x860
[ 369.781684] ? jbd2__journal_start+0xf4/0x860
[ 369.782387] ? __ext4_journal_start_sb+0xf0/0x3e0
[ 369.783149] ? ext4_dirty_inode+0x4f/0x90
[ 369.783780] ? ext4_setattr+0x2090/0x2090
[ 369.784439] ext4_dirty_inode+0x6a/0x90
[ 369.785071] __mark_inode_dirty+0x88a/0xfa0
[ 369.785730] ? dentry_needs_remove_privs.part.19+0x50/0x50
[ 369.786609] generic_update_time+0x1b6/0x2e0
[ 369.787315] ? dentry_needs_remove_privs.part.19+0x50/0x50
[ 369.788154] file_update_time+0x2aa/0x460
[ 369.788759] ? current_time+0xc0/0xc0
[ 369.789336] ? lock_acquire+0x10b/0x350
[ 369.789910] ? lock_acquire+0x10b/0x350
[ 369.790515] __generic_file_write_iter+0x1bc/0x540
[ 369.791271] ? generic_write_checks+0x253/0x410
[ 369.791942] ext4_file_write_iter+0x503/0xda0
[ 369.792620] ? ext4_file_mmap+0x1e0/0x1e0
[ 369.793247] ? vfs_write+0x3eb/0x4e0
[ 369.793781] ? debug_check_no_locks_freed+0x2c0/0x2c0
[ 369.794553] ? lock_acquire+0x10b/0x350
[ 369.795162] ? __fdget_pos+0xb3/0xe0
[ 369.795701] __vfs_write+0x4b6/0x620
[ 369.796262] ? kernel_read+0x110/0x110
[ 369.796821] ? finish_task_switch+0x11d/0x560
[ 369.797493] ? mutex_lock_io_nested+0x1100/0x1100
[ 369.798212] ? __fget+0x237/0x3c0
[ 369.798715] ? lock_acquire+0x10b/0x350
[ 369.799319] ? lock_acquire+0x10b/0x350
[ 369.799870] ? vfs_write+0x3eb/0x4e0
[ 369.800412] ? rcu_sync_lockdep_assert+0x9/0xa0
[ 369.801084] vfs_write+0x17f/0x4e0
[ 369.801581] ksys_write+0xc1/0x190
[ 369.802097] ? __ia32_sys_read+0xb0/0xb0
[ 369.802665] do_syscall_64+0x9f/0x470
[ 369.803226] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 369.803953] RIP: 0033:0x7f88345b619d
[ 369.804495] RSP: 002b:00007f8832b57000 EFLAGS: 00000293 ORIG_RAX:
0000000000000001
[ 369.805585] RAX: ffffffffffffffda RBX: 000000000000029c RCX:
00007f88345b619d
[ 369.806610] RDX: 000000000000029c RSI: 0000000000d25a90 RDI:
0000000000000001
[ 369.807642] RBP: 0000000000d25a90 R08: 5d3334323038332e R09:
73203a3161746120
[ 369.808670] R10: 0000000000000000 R11: 0000000000000293 R12:
0000000000000000
[ 369.809698] R13: 00007f8832b57480 R14: 0000000000000007 R15:
0000000000d25870
[ 369.810741] INFO: task bash:2661 blocked for more than 120 seconds.
[ 369.811646] Tainted: G W 4.17.0-rc1+ #2
[ 369.812438] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 369.813511] bash D26672 2661 2659 0x00000000
[ 369.814288] Call Trace:
[ 369.814638] ? __schedule+0x6a4/0x1a80
[ 369.815190] ? __sched_text_start+0x8/0x8
[ 369.815746] ? prepare_to_wait_exclusive+0x10e/0x250
[ 369.816448] schedule+0x77/0x1a0
[ 369.816901] io_schedule+0x17/0x60
[ 369.817401] bit_wait_io+0x12/0x90
[ 369.817875] __wait_on_bit_lock+0xbc/0x1c0
[ 369.818464] ? bit_wait+0x90/0x90
[ 369.818924] ? do_raw_spin_unlock+0x4f/0x240
[ 369.819543] out_of_line_wait_on_bit_lock+0xd2/0x110
[ 369.820247] ? __wait_on_bit_lock+0x1c0/0x1c0
[ 369.820847] ? init_wait_var_entry+0x1a0/0x1a0
[ 369.821483] ? jbd2_write_access_granted.part.10+0x171/0x2d0
[ 369.822273] __lock_buffer+0x47/0x50
[ 369.822771] do_get_write_access+0x794/0x1010
[ 369.823404] jbd2_journal_get_write_access+0x5e/0x90
[ 369.824089] __ext4_journal_get_write_access+0x5c/0x90
[ 369.824768] ext4_reserve_inode_write+0x164/0x220
[ 369.825420] ext4_mark_inode_dirty+0x132/0x780
[ 369.826037] ? ext4_dirty_inode+0x6a/0x90
[ 369.826575] ? ext4_expand_extra_isize+0x4d0/0x4d0
[ 369.827243] ? jbd2__journal_start+0x144/0x860
[ 369.827836] ? jbd2__journal_start+0xf4/0x860
[ 369.828438] ? __ext4_journal_start_sb+0xf0/0x3e0
[ 369.829085] ? ext4_dirty_inode+0x4f/0x90
[ 369.829626] ? ext4_setattr+0x2090/0x2090
[ 369.830187] ext4_dirty_inode+0x6a/0x90
[ 369.830702] __mark_inode_dirty+0x88a/0xfa0
[ 369.831294] ? dentry_needs_remove_privs.part.19+0x50/0x50
[ 369.832045] generic_update_time+0x1b6/0x2e0
[ 369.832613] ? dentry_needs_remove_privs.part.19+0x50/0x50
[ 369.833363] touch_atime+0x215/0x280
[ 369.833848] ? __atime_needs_update+0x900/0x900
[ 369.834475] ? fsnotify_first_mark+0x180/0x180
[ 369.835101] iterate_dir+0x435/0x520
[ 369.835583] __x64_sys_getdents+0x1bc/0x310
[ 369.836165] ? __ia32_sys_getdents+0x300/0x300
[ 369.836759] ? __do_page_fault+0x391/0xb60
[ 369.837329] ? __x64_sys_getdents+0x310/0x310
[ 369.837907] ? mm_fault_error+0x2b0/0x2b0
[ 369.838467] ? do_syscall_64+0x9f/0x470
[ 369.838979] do_syscall_64+0x9f/0x470
[ 369.839500] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 369.840191] RIP: 0033:0x7f003f310575
[ 369.840668] RSP: 002b:00007fff5541a660 EFLAGS: 00000246 ORIG_RAX:
000000000000004e
[ 369.841678] RAX: ffffffffffffffda RBX: 00000000009c0008 RCX:
00007f003f310575
[ 369.842634] RDX: 0000000000008000 RSI: 00000000009c0038 RDI:
0000000000000003
[ 369.843592] RBP: ffffffffffffffa8 R08: 00000000009c0038 R09:
0000000000200000
[ 369.844536] R10: 0000000000000008 R11: 0000000000000246 R12:
0000000000000000
[ 369.845479] R13: 00000000009c0038 R14: 000000000098f608 R15:
00000000009861f8
[ 369.846437] INFO: lockdep is turned off.
[ 390.129207] ata1: lost interrupt (Status 0x50)
[ 390.131076] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
frozen
[ 390.133305] ata1.00: failed command: READ DMA
[ 390.134738] ata1.00: cmd c8/00:00:00:00:00/00:00:00:00:00/e0 tag 0
dma 131072 out
[ 390.134738] res 40/00:01:00:00:00/00:00:00:00:00/a0 Emask
0x4 (timeout)
[ 390.139136] ata1.00: status: { DRDY }
[ 390.140540] ata1: soft resetting link
[ 390.298828] ata1.00: configured for MWDMA1
[ 390.300475] ata1: EH complete
[ 451.569310] ata1: lost interrupt (Status 0x50)
[ 451.570954] ata1.00: limiting speed to PIO4
[ 451.572303] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
frozen
[ 451.574418] ata1.00: failed command: READ DMA
[ 451.575767] ata1.00: cmd c8/00:00:00:00:00/00:00:00:00:00/e0 tag 0
dma 131072 out
[ 451.575767] res 40/00:01:00:00:00/00:00:00:00:00/a0 Emask
0x4 (timeout)
[ 451.579606] ata1.00: status: { DRDY }
[ 451.580807] ata1: soft resetting link
[ 451.738673] ata1.00: configured for PIO4
[ 451.740648] ata1: EH complete
[ 451.883708] BUG: unable to handle kernel NULL pointer dereference at
00000000000000f8
[ 451.885307] PGD 800000006c10b067 P4D 800000006c10b067 PUD 6c27a067 PMD 0
[ 451.886598] Oops: 0000 [#1] SMP KASAN PTI
[ 451.887377] Modules linked in:
[ 451.887977] CPU: 1 PID: 2661 Comm: bash Tainted: G W
4.17.0-rc1+ #2
[ 451.889400] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 451.891179] RIP: 0010:qlist_free_all+0x32/0xc0
[ 451.892023] RSP: 0018:ffff88006ba97c18 EFLAGS: 00010246
[ 451.893024] RAX: fffff9e02c000a00 RBX: 0000000000000000 RCX:
ffffffffffffffff
[ 451.894346] RDX: 0000000000000000 RSI: 0003800b0002800b RDI:
0000000000000000
[ 451.895667] RBP: 0003800b0002800b R08: ffff880066d2c008 R09:
00000001000f000d
[ 451.896968] R10: ffff88006ba97b50 R11: ffff88006cd4dc00 R12:
ffff88006ba97c50
[ 451.898228] R13: ffffffffb938a2f2 R14: 0000000080000000 R15:
ffffffff80000000
[ 451.899494] FS: 00007f003fc37700(0000) GS:ffff88006d100000(0000)
knlGS:0000000000000000
[ 451.900922] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 451.901942] CR2: 00000000000000f8 CR3: 0000000069a5c000 CR4:
00000000000006e0
[ 451.903207] Call Trace:
[ 451.903672] ? getname_flags+0xc5/0x560
[ 451.904385] quarantine_reduce+0x166/0x1a0
[ 451.905127] kasan_kmalloc+0xc4/0xd0
[ 451.905781] ? getname_flags+0xc5/0x560
[ 451.906484] kmem_cache_alloc+0xd2/0x280
[ 451.907196] getname_flags+0xc5/0x560
[ 451.907873] ? lock_downgrade+0x5e0/0x5e0
[ 451.908608] user_path_at_empty+0x27/0x50
[ 451.909335] vfs_statx+0xe1/0x180
[ 451.909943] ? vfs_statx_fd+0x80/0x80
[ 451.910615] ? sigprocmask+0xe4/0x260
[ 451.911284] ? __x64_sys_rt_sigsuspend+0x130/0x130
[ 451.912142] __do_sys_newstat+0x81/0x100
[ 451.912858] ? cp_new_stat+0x5a0/0x5a0
[ 451.913536] ? __x64_sys_rt_sigprocmask+0x1be/0x250
[ 451.914407] ? __ia32_compat_sys_rt_sigprocmask+0x270/0x270
[ 451.915401] ? do_raw_spin_unlock+0x4f/0x240
[ 451.916185] ? _raw_spin_unlock_irq+0x24/0x40
[ 451.916956] ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 451.917762] do_syscall_64+0x9f/0x470
[ 451.918395] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 451.919255] RIP: 0033:0x7f003f337c65
[ 451.919872] RSP: 002b:00007fff5541a4b8 EFLAGS: 00000246 ORIG_RAX:
0000000000000004
[ 451.921154] RAX: ffffffffffffffda RBX: 000000000098c988 RCX:
00007f003f337c65
[ 451.922348] RDX: 00007fff5541a4c0 RSI: 00007fff5541a4c0 RDI:
000000000098c988
[ 451.923545] RBP: 000000000000002f R08: 000000000098c989 R09:
ff04ff2e6d68612e
[ 451.924746] R10: 0000000000000008 R11: 0000000000000246 R12:
000000000098c989
[ 451.925943] R13: 000000000098c98c R14: 000000000098c98c R15:
0000000000000002
[ 451.927148] Code: 54 55 53 48 89 f3 48 8b 37 48 85 f6 0f 84 91 00 00
00 49 89 fc 49 c7 c5 f2 a2 38 b9 41 be 00 00 00 80 49 c7 c7 00 00 00 80
eb 1d <48> 63 87 f8 00 00 00 48 8b 2e 4c 89 ea 48 29 c6 e8 89 ca ff ff
[ 451.930322] RIP: qlist_free_all+0x32/0xc0 RSP: ffff88006ba97c18
[ 451.931274] CR2: 00000000000000f8
[ 451.931875] ---[ end trace ebbb0bc718ce3e5d ]---
[ 856.037070] watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [sshd:2613]
[ 856.037948] Modules linked in:
[ 856.038345] irq event stamp: 0
[ 856.038753] hardirqs last enabled at (0): [<0000000000000000>]
(null)
[ 856.039699] hardirqs last disabled at (0): [<ffffffffb8f05791>]
copy_process.part.50+0x1111/0x6120
[ 856.040828] softirqs last enabled at (0): [<ffffffffb8f05834>]
copy_process.part.50+0x11b4/0x6120
[ 856.041949] softirqs last disabled at (0): [<0000000000000000>]
(null)
[ 856.042895] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W
4.17.0-rc1+ #2
[ 856.043850] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 856.045043] RIP: 0010:queued_spin_lock_slowpath+0x89/0x690
[ 856.045746] RSP: 0018:ffff880066197a00 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffff13
[ 856.046712] RAX: 0000000000000000 RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 856.047615] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 856.048517] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 856.049422] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 856.050326] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 856.051232] FS: 00007f531d6157c0(0000) GS:ffff88006d100000(0000)
knlGS:0000000000000000
[ 856.052256] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 856.052988] CR2: 00000000000000f8 CR3: 000000006b03e000 CR4:
00000000000006e0
[ 856.053894] Call Trace:
[ 856.054227] do_raw_spin_lock+0x15b/0x1e0
[ 856.054755] copy_page_range+0x977/0x1a70
[ 856.055285] ? lock_downgrade+0x5e0/0x5e0
[ 856.055804] ? vm_iomap_memory+0x150/0x150
[ 856.056333] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 856.056949] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 856.057565] copy_process.part.50+0x5be4/0x6120
[ 856.058160] ? __cleanup_sighand+0x40/0x40
[ 856.058696] ? lock_downgrade+0x5e0/0x5e0
[ 856.059219] ? get_unused_fd_flags+0xc0/0xc0
[ 856.059776] _do_fork+0x1c1/0xd20
[ 856.060212] ? fork_idle+0x2d0/0x2d0
[ 856.060677] ? __do_pipe_flags+0x230/0x230
[ 856.061212] ? signal_fault+0x2b0/0x2b0
[ 856.061715] do_syscall_64+0x9f/0x470
[ 856.062195] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 856.062851] RIP: 0033:0x7f531b98bf46
[ 856.063314] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 856.064271] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 856.065176] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 856.066077] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 856.066985] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 856.067891] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 856.068796] Code: 75 27 be 04 00 00 00 48 89 df e8 d3 66 36 00 89 e8
f0 44 0f b1 33 85 c0 75 c3 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3
f3 90 <eb> b0 81 fe 00 01 00 00 89 f5 0f 84 0e 03 00 00 41 bd 01 01 00
[ 884.037028] watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [sshd:2613]
[ 884.037907] Modules linked in:
[ 884.038305] irq event stamp: 0
[ 884.038705] hardirqs last enabled at (0): [<0000000000000000>]
(null)
[ 884.039653] hardirqs last disabled at (0): [<ffffffffb8f05791>]
copy_process.part.50+0x1111/0x6120
[ 884.040782] softirqs last enabled at (0): [<ffffffffb8f05834>]
copy_process.part.50+0x11b4/0x6120
[ 884.041907] softirqs last disabled at (0): [<0000000000000000>]
(null)
[ 884.042844] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W L
4.17.0-rc1+ #2
[ 884.043804] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 884.044999] RIP: 0010:check_memory_region+0x16/0x190
[ 884.045630] RSP: 0018:ffff8800661979f8 EFLAGS: 00000202 ORIG_RAX:
ffffffffffffff13
[ 884.046583] RAX: ffff7fffffffffff RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 884.047487] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 884.048387] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 884.049287] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 884.050186] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 884.051088] FS: 00007f531d6157c0(0000) GS:ffff88006d100000(0000)
knlGS:0000000000000000
[ 884.052106] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 884.052833] CR2: 00000000000000f8 CR3: 000000006b03e000 CR4:
00000000000006e0
[ 884.053734] Call Trace:
[ 884.054063] queued_spin_lock_slowpath+0x48/0x690
[ 884.054668] do_raw_spin_lock+0x15b/0x1e0
[ 884.055190] copy_page_range+0x977/0x1a70
[ 884.055718] ? lock_downgrade+0x5e0/0x5e0
[ 884.056235] ? vm_iomap_memory+0x150/0x150
[ 884.056762] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 884.057374] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 884.057989] copy_process.part.50+0x5be4/0x6120
[ 884.058580] ? __cleanup_sighand+0x40/0x40
[ 884.059115] ? lock_downgrade+0x5e0/0x5e0
[ 884.059635] ? get_unused_fd_flags+0xc0/0xc0
[ 884.060190] _do_fork+0x1c1/0xd20
[ 884.060624] ? fork_idle+0x2d0/0x2d0
[ 884.061088] ? __do_pipe_flags+0x230/0x230
[ 884.061619] ? signal_fault+0x2b0/0x2b0
[ 884.062122] do_syscall_64+0x9f/0x470
[ 884.062599] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 884.063252] RIP: 0033:0x7f531b98bf46
[ 884.063710] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 884.064660] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 884.065558] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 884.066454] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 884.067355] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 884.068249] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 884.069148] Code: 0f b6 14 16 84 d2 74 d7 83 e0 07 38 c2 40 0f 9e c6
eb c7 66 90 48 85 f6 0f 84 7c 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 0f
b6 d2 <48> 39 c7 0f 86 13 01 00 00 4c 8d 5c 37 ff 49 b8 00 00 00 00 00
[ 912.037031] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [sshd:2613]
[ 912.037930] Modules linked in:
[ 912.038339] irq event stamp: 0
[ 912.038756] hardirqs last enabled at (0): [<0000000000000000>]
(null)
[ 912.039727] hardirqs last disabled at (0): [<ffffffffb8f05791>]
copy_process.part.50+0x1111/0x6120
[ 912.040884] softirqs last enabled at (0): [<ffffffffb8f05834>]
copy_process.part.50+0x11b4/0x6120
[ 912.042039] softirqs last disabled at (0): [<0000000000000000>]
(null)
[ 912.042995] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W L
4.17.0-rc1+ #2
[ 912.043972] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 912.045189] RIP: 0010:check_memory_region+0x16/0x190
[ 912.045836] RSP: 0018:ffff8800661979f8 EFLAGS: 00000202 ORIG_RAX:
ffffffffffffff13
[ 912.046816] RAX: ffff7fffffffffff RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 912.047738] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 912.048651] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 912.049561] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 912.050471] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 912.051386] FS: 00007f531d6157c0(0000) GS:ffff88006d100000(0000)
knlGS:0000000000000000
[ 912.052421] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 912.053161] CR2: 00000000000000f8 CR3: 000000006b03e000 CR4:
00000000000006e0
[ 912.054079] Call Trace:
[ 912.054416] queued_spin_lock_slowpath+0x48/0x690
[ 912.055061] do_raw_spin_lock+0x15b/0x1e0
[ 912.055598] copy_page_range+0x977/0x1a70
[ 912.056134] ? lock_downgrade+0x5e0/0x5e0
[ 912.056662] ? vm_iomap_memory+0x150/0x150
[ 912.057198] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 912.057826] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 912.058452] copy_process.part.50+0x5be4/0x6120
[ 912.059055] ? __cleanup_sighand+0x40/0x40
[ 912.059599] ? lock_downgrade+0x5e0/0x5e0
[ 912.060131] ? get_unused_fd_flags+0xc0/0xc0
[ 912.060695] _do_fork+0x1c1/0xd20
[ 912.061137] ? fork_idle+0x2d0/0x2d0
[ 912.061608] ? __do_pipe_flags+0x230/0x230
[ 912.062150] ? signal_fault+0x2b0/0x2b0
[ 912.062660] do_syscall_64+0x9f/0x470
[ 912.063146] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 912.063812] RIP: 0033:0x7f531b98bf46
[ 912.064282] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 912.065257] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 912.066177] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 912.067092] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 912.068016] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 912.068935] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 912.069856] Code: 0f b6 14 16 84 d2 74 d7 83 e0 07 38 c2 40 0f 9e c6
eb c7 66 90 48 85 f6 0f 84 7c 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 0f
b6 d2 <48> 39 c7 0f 86 13 01 00 00 4c 8d 5c 37 ff 49 b8 00 00 00 00 00
[ 932.076026] INFO: rcu_sched self-detected stall on CPU
[ 932.076717] 1-....: (1 GPs behind) idle=4de/1/4611686018427387906
softirq=5324/5394 fqs=18968
[ 932.077816] (t=76000 jiffies g=2337 c=2336 q=9)
[ 932.078433] NMI backtrace for cpu 1
[ 932.078894] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W L
4.17.0-rc1+ #2
[ 932.079862] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 932.081056] Call Trace:
[ 932.081387] <IRQ>
[ 932.081667] dump_stack+0xca/0x13e
[ 932.082125] ? lapic_can_unplug_cpu+0x90/0x90
[ 932.082690] nmi_cpu_backtrace+0x153/0x170
[ 932.083224] ? lapic_can_unplug_cpu+0x90/0x90
[ 932.083793] nmi_trigger_cpumask_backtrace+0x117/0x170
[ 932.084457] rcu_dump_cpu_stacks+0x186/0x1d4
[ 932.085014] rcu_check_callbacks+0x1a2b/0x1d10
[ 932.085594] ? cpuacct_account_field+0x153/0x2d0
[ 932.086192] update_process_times+0x28/0x60
[ 932.086736] tick_sched_handle+0x79/0x150
[ 932.087265] tick_sched_timer+0x40/0x110
[ 932.087781] __hrtimer_run_queues+0x2d6/0xb90
[ 932.088346] ? tick_sched_do_timer+0x150/0x150
[ 932.088919] ? hrtimer_cancel+0x40/0x40
[ 932.089421] ? kvm_clock_get_cycles+0x21/0x30
[ 932.089987] ? ktime_get_update_offsets_now+0x1d5/0x2c0
[ 932.090658] hrtimer_interrupt+0x24e/0x620
[ 932.091195] smp_apic_timer_interrupt+0xc4/0x4b0
[ 932.091802] apic_timer_interrupt+0xf/0x20
[ 932.092333] </IRQ>
[ 932.092618] RIP: 0010:queued_spin_lock_slowpath+0x89/0x690
[ 932.093316] RSP: 0018:ffff880066197a00 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffff13
[ 932.094272] RAX: 0000000000000000 RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 932.095172] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 932.096075] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 932.096975] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 932.097878] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 932.098787] ? queued_spin_lock_slowpath+0x48/0x690
[ 932.099419] do_raw_spin_lock+0x15b/0x1e0
[ 932.099949] copy_page_range+0x977/0x1a70
[ 932.100479] ? lock_downgrade+0x5e0/0x5e0
[ 932.101002] ? vm_iomap_memory+0x150/0x150
[ 932.101536] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 932.102155] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 932.102778] copy_process.part.50+0x5be4/0x6120
[ 932.103370] ? __cleanup_sighand+0x40/0x40
[ 932.103909] ? lock_downgrade+0x5e0/0x5e0
[ 932.104431] ? get_unused_fd_flags+0xc0/0xc0
[ 932.104989] _do_fork+0x1c1/0xd20
[ 932.105425] ? fork_idle+0x2d0/0x2d0
[ 932.105892] ? __do_pipe_flags+0x230/0x230
[ 932.106426] ? signal_fault+0x2b0/0x2b0
[ 932.106928] do_syscall_64+0x9f/0x470
[ 932.107404] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 932.108058] RIP: 0033:0x7f531b98bf46
[ 932.108524] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 932.109484] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 932.110385] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 932.111284] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 932.112190] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 932.113093] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 960.037020] watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [sshd:2613]
[ 960.037919] Modules linked in:
[ 960.038324] irq event stamp: 0
[ 960.038732] hardirqs last enabled at (0): [<0000000000000000>]
(null)
[ 960.039692] hardirqs last disabled at (0): [<ffffffffb8f05791>]
copy_process.part.50+0x1111/0x6120
[ 960.040847] softirqs last enabled at (0): [<ffffffffb8f05834>]
copy_process.part.50+0x11b4/0x6120
[ 960.041996] softirqs last disabled at (0): [<0000000000000000>]
(null)
[ 960.042950] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W L
4.17.0-rc1+ #2
[ 960.043913] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 960.045128] RIP: 0010:queued_spin_lock_slowpath+0x48/0x690
[ 960.045834] RSP: 0018:ffff880066197a00 EFLAGS: 00000246 ORIG_RAX:
ffffffffffffff13
[ 960.046802] RAX: ffffed000cda7c02 RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 960.047713] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 960.048628] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 960.049535] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 960.050444] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 960.051355] FS: 00007f531d6157c0(0000) GS:ffff88006d100000(0000)
knlGS:0000000000000000
[ 960.052387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 960.053122] CR2: 00000000000000f8 CR3: 000000006b03e000 CR4:
00000000000006e0
[ 960.054032] Call Trace:
[ 960.054369] do_raw_spin_lock+0x15b/0x1e0
[ 960.054893] copy_page_range+0x977/0x1a70
[ 960.055421] ? lock_downgrade+0x5e0/0x5e0
[ 960.055942] ? vm_iomap_memory+0x150/0x150
[ 960.056490] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 960.057108] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 960.057728] copy_process.part.50+0x5be4/0x6120
[ 960.058322] ? __cleanup_sighand+0x40/0x40
[ 960.058853] ? lock_downgrade+0x5e0/0x5e0
[ 960.059380] ? get_unused_fd_flags+0xc0/0xc0
[ 960.059936] _do_fork+0x1c1/0xd20
[ 960.060378] ? fork_idle+0x2d0/0x2d0
[ 960.060849] ? __do_pipe_flags+0x230/0x230
[ 960.061386] ? signal_fault+0x2b0/0x2b0
[ 960.061890] do_syscall_64+0x9f/0x470
[ 960.062371] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 960.063022] RIP: 0033:0x7f531b98bf46
[ 960.063487] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 960.064459] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 960.065370] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 960.066281] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 960.067186] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 960.068095] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 960.069009] Code: b8 00 00 00 00 00 fc ff df 49 c1 ed 03 41 83 e4 07
41 be 01 00 00 00 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 df e8 e8 66
36 00 <41> 0f b6 45 00 41 38 c4 7c 08 84 c0 0f 85 60 05 00 00 8b 2b 85
[ 988.037022] watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [sshd:2613]
[ 988.037901] Modules linked in:
[ 988.038302] irq event stamp: 0
[ 988.038703] hardirqs last enabled at (0): [<0000000000000000>]
(null)
[ 988.039650] hardirqs last disabled at (0): [<ffffffffb8f05791>]
copy_process.part.50+0x1111/0x6120
[ 988.040790] softirqs last enabled at (0): [<ffffffffb8f05834>]
copy_process.part.50+0x11b4/0x6120
[ 988.041914] softirqs last disabled at (0): [<0000000000000000>]
(null)
[ 988.042855] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W L
4.17.0-rc1+ #2
[ 988.043809] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 988.045005] RIP: 0010:queued_spin_lock_slowpath+0x89/0x690
[ 988.045704] RSP: 0018:ffff880066197a00 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffff13
[ 988.046664] RAX: 0000000000000000 RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 988.047568] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 988.048475] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 988.049386] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 988.050290] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 988.051193] FS: 00007f531d6157c0(0000) GS:ffff88006d100000(0000)
knlGS:0000000000000000
[ 988.052221] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 988.052960] CR2: 00000000000000f8 CR3: 000000006b03e000 CR4:
00000000000006e0
[ 988.053864] Call Trace:
[ 988.054197] do_raw_spin_lock+0x15b/0x1e0
[ 988.054721] copy_page_range+0x977/0x1a70
[ 988.055250] ? lock_downgrade+0x5e0/0x5e0
[ 988.055769] ? vm_iomap_memory+0x150/0x150
[ 988.056301] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 988.056929] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 988.057548] copy_process.part.50+0x5be4/0x6120
[ 988.058135] ? __cleanup_sighand+0x40/0x40
[ 988.058665] ? lock_downgrade+0x5e0/0x5e0
[ 988.059184] ? get_unused_fd_flags+0xc0/0xc0
[ 988.059740] _do_fork+0x1c1/0xd20
[ 988.060175] ? fork_idle+0x2d0/0x2d0
[ 988.060643] ? __do_pipe_flags+0x230/0x230
[ 988.061183] ? signal_fault+0x2b0/0x2b0
[ 988.061685] do_syscall_64+0x9f/0x470
[ 988.062167] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 988.062814] RIP: 0033:0x7f531b98bf46
[ 988.063279] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 988.064242] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 988.065151] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 988.066052] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 988.066960] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 988.067864] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 988.068773] Code: 75 27 be 04 00 00 00 48 89 df e8 d3 66 36 00 89 e8
f0 44 0f b1 33 85 c0 75 c3 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3
f3 90 <eb> b0 81 fe 00 01 00 00 89 f5 0f 84 0e 03 00 00 41 bd 01 01 00
[ 1016.037047] watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [sshd:2613]
[ 1016.037941] Modules linked in:
[ 1016.038339] irq event stamp: 0
[ 1016.038740] hardirqs last enabled at (0): [<0000000000000000>]
(null)
[ 1016.039680] hardirqs last disabled at (0): [<ffffffffb8f05791>]
copy_process.part.50+0x1111/0x6120
[ 1016.040803] softirqs last enabled at (0): [<ffffffffb8f05834>]
copy_process.part.50+0x11b4/0x6120
[ 1016.041932] softirqs last disabled at (0): [<0000000000000000>]
(null)
[ 1016.042875] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W L
4.17.0-rc1+ #2
[ 1016.043831] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 1016.045029] RIP: 0010:queued_spin_lock_slowpath+0x89/0x690
[ 1016.045731] RSP: 0018:ffff880066197a00 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffff13
[ 1016.046682] RAX: 0000000000000000 RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 1016.047579] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 1016.048478] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 1016.049381] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 1016.050281] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 1016.051184] FS: 00007f531d6157c0(0000) GS:ffff88006d100000(0000)
knlGS:0000000000000000
[ 1016.052200] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1016.052929] CR2: 00000000000000f8 CR3: 000000006b03e000 CR4:
00000000000006e0
[ 1016.053835] Call Trace:
[ 1016.054170] do_raw_spin_lock+0x15b/0x1e0
[ 1016.054693] copy_page_range+0x977/0x1a70
[ 1016.055221] ? lock_downgrade+0x5e0/0x5e0
[ 1016.055739] ? vm_iomap_memory+0x150/0x150
[ 1016.056271] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1016.056885] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1016.057506] copy_process.part.50+0x5be4/0x6120
[ 1016.058098] ? __cleanup_sighand+0x40/0x40
[ 1016.058624] ? lock_downgrade+0x5e0/0x5e0
[ 1016.059143] ? get_unused_fd_flags+0xc0/0xc0
[ 1016.059695] _do_fork+0x1c1/0xd20
[ 1016.060131] ? fork_idle+0x2d0/0x2d0
[ 1016.060597] ? __do_pipe_flags+0x230/0x230
[ 1016.061133] ? signal_fault+0x2b0/0x2b0
[ 1016.061642] do_syscall_64+0x9f/0x470
[ 1016.062122] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1016.062772] RIP: 0033:0x7f531b98bf46
[ 1016.063236] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 1016.064189] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 1016.065086] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 1016.065987] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 1016.066888] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 1016.067784] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 1016.068677] Code: 75 27 be 04 00 00 00 48 89 df e8 d3 66 36 00 89 e8
f0 44 0f b1 33 85 c0 75 c3 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3
f3 90 <eb> b0 81 fe 00 01 00 00 89 f5 0f 84 0e 03 00 00 41 bd 01 01 00
[ 1044.037022] watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [sshd:2613]
[ 1044.037911] Modules linked in:
[ 1044.038307] irq event stamp: 0
[ 1044.038708] hardirqs last enabled at (0): [<0000000000000000>]
(null)
[ 1044.039653] hardirqs last disabled at (0): [<ffffffffb8f05791>]
copy_process.part.50+0x1111/0x6120
[ 1044.040788] softirqs last enabled at (0): [<ffffffffb8f05834>]
copy_process.part.50+0x11b4/0x6120
[ 1044.041926] softirqs last disabled at (0): [<0000000000000000>]
(null)
[ 1044.042865] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W L
4.17.0-rc1+ #2
[ 1044.043822] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 1044.045020] RIP: 0010:queued_spin_lock_slowpath+0x89/0x690
[ 1044.045715] RSP: 0018:ffff880066197a00 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffff13
[ 1044.046679] RAX: 0000000000000000 RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 1044.047579] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 1044.048483] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 1044.049383] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 1044.050291] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 1044.051197] FS: 00007f531d6157c0(0000) GS:ffff88006d100000(0000)
knlGS:0000000000000000
[ 1044.052218] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1044.052945] CR2: 00000000000000f8 CR3: 000000006b03e000 CR4:
00000000000006e0
[ 1044.053850] Call Trace:
[ 1044.054182] do_raw_spin_lock+0x15b/0x1e0
[ 1044.054706] copy_page_range+0x977/0x1a70
[ 1044.055232] ? lock_downgrade+0x5e0/0x5e0
[ 1044.055750] ? vm_iomap_memory+0x150/0x150
[ 1044.056280] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1044.056893] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1044.057512] copy_process.part.50+0x5be4/0x6120
[ 1044.058111] ? __cleanup_sighand+0x40/0x40
[ 1044.058641] ? lock_downgrade+0x5e0/0x5e0
[ 1044.059162] ? get_unused_fd_flags+0xc0/0xc0
[ 1044.059717] _do_fork+0x1c1/0xd20
[ 1044.060150] ? fork_idle+0x2d0/0x2d0
[ 1044.060614] ? __do_pipe_flags+0x230/0x230
[ 1044.061145] ? signal_fault+0x2b0/0x2b0
[ 1044.061644] do_syscall_64+0x9f/0x470
[ 1044.062128] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1044.062781] RIP: 0033:0x7f531b98bf46
[ 1044.063244] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 1044.064201] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 1044.065103] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 1044.066011] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 1044.066911] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 1044.067807] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 1044.068706] Code: 75 27 be 04 00 00 00 48 89 df e8 d3 66 36 00 89 e8
f0 44 0f b1 33 85 c0 75 c3 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3
f3 90 <eb> b0 81 fe 00 01 00 00 89 f5 0f 84 0e 03 00 00 41 bd 01 01 00
[ 1072.037029] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [sshd:2613]
[ 1072.037938] Modules linked in:
[ 1072.038355] irq event stamp: 0
[ 1072.038766] hardirqs last enabled at (0): [<0000000000000000>]
(null)
[ 1072.039729] hardirqs last disabled at (0): [<ffffffffb8f05791>]
copy_process.part.50+0x1111/0x6120
[ 1072.040891] softirqs last enabled at (0): [<ffffffffb8f05834>]
copy_process.part.50+0x11b4/0x6120
[ 1072.042043] softirqs last disabled at (0): [<0000000000000000>]
(null)
[ 1072.043007] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W L
4.17.0-rc1+ #2
[ 1072.043975] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 1072.045196] RIP: 0010:queued_spin_lock_slowpath+0x89/0x690
[ 1072.045905] RSP: 0018:ffff880066197a00 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffff13
[ 1072.046884] RAX: 0000000000000000 RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 1072.047800] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 1072.048716] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 1072.049632] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 1072.050558] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 1072.051481] FS: 00007f531d6157c0(0000) GS:ffff88006d100000(0000)
knlGS:0000000000000000
[ 1072.052525] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1072.053274] CR2: 00000000000000f8 CR3: 000000006b03e000 CR4:
00000000000006e0
[ 1072.054198] Call Trace:
[ 1072.054544] do_raw_spin_lock+0x15b/0x1e0
[ 1072.055089] copy_page_range+0x977/0x1a70
[ 1072.055629] ? lock_downgrade+0x5e0/0x5e0
[ 1072.056160] ? vm_iomap_memory+0x150/0x150
[ 1072.056701] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1072.057329] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1072.057959] copy_process.part.50+0x5be4/0x6120
[ 1072.058571] ? __cleanup_sighand+0x40/0x40
[ 1072.059113] ? lock_downgrade+0x5e0/0x5e0
[ 1072.059647] ? get_unused_fd_flags+0xc0/0xc0
[ 1072.060215] _do_fork+0x1c1/0xd20
[ 1072.060659] ? fork_idle+0x2d0/0x2d0
[ 1072.061136] ? __do_pipe_flags+0x230/0x230
[ 1072.061680] ? signal_fault+0x2b0/0x2b0
[ 1072.062193] do_syscall_64+0x9f/0x470
[ 1072.062687] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1072.063350] RIP: 0033:0x7f531b98bf46
[ 1072.063822] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 1072.064800] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 1072.065722] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 1072.066646] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 1072.067562] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 1072.068478] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 1072.069390] Code: 75 27 be 04 00 00 00 48 89 df e8 d3 66 36 00 89 e8
f0 44 0f b1 33 85 c0 75 c3 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3
f3 90 <eb> b0 81 fe 00 01 00 00 89 f5 0f 84 0e 03 00 00 41 bd 01 01 00
[ 1100.037028] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [sshd:2613]
[ 1100.037915] Modules linked in:
[ 1100.038316] irq event stamp: 0
[ 1100.038720] hardirqs last enabled at (0): [<0000000000000000>]
(null)
[ 1100.039675] hardirqs last disabled at (0): [<ffffffffb8f05791>]
copy_process.part.50+0x1111/0x6120
[ 1100.040814] softirqs last enabled at (0): [<ffffffffb8f05834>]
copy_process.part.50+0x11b4/0x6120
[ 1100.041946] softirqs last disabled at (0): [<0000000000000000>]
(null)
[ 1100.042893] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W L
4.17.0-rc1+ #2
[ 1100.043854] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 1100.045056] RIP: 0010:queued_spin_lock_slowpath+0x89/0x690
[ 1100.045758] RSP: 0018:ffff880066197a00 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffff13
[ 1100.046726] RAX: 0000000000000000 RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 1100.047633] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 1100.048541] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 1100.049450] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 1100.050355] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 1100.051269] FS: 00007f531d6157c0(0000) GS:ffff88006d100000(0000)
knlGS:0000000000000000
[ 1100.052297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1100.053031] CR2: 00000000000000f8 CR3: 000000006b03e000 CR4:
00000000000006e0
[ 1100.053941] Call Trace:
[ 1100.054275] do_raw_spin_lock+0x15b/0x1e0
[ 1100.054804] copy_page_range+0x977/0x1a70
[ 1100.055334] ? lock_downgrade+0x5e0/0x5e0
[ 1100.055853] ? vm_iomap_memory+0x150/0x150
[ 1100.056383] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1100.056997] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1100.057612] copy_process.part.50+0x5be4/0x6120
[ 1100.058203] ? __cleanup_sighand+0x40/0x40
[ 1100.058738] ? lock_downgrade+0x5e0/0x5e0
[ 1100.059260] ? get_unused_fd_flags+0xc0/0xc0
[ 1100.059817] _do_fork+0x1c1/0xd20
[ 1100.060255] ? fork_idle+0x2d0/0x2d0
[ 1100.060722] ? __do_pipe_flags+0x230/0x230
[ 1100.061253] ? signal_fault+0x2b0/0x2b0
[ 1100.061754] do_syscall_64+0x9f/0x470
[ 1100.062234] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1100.062885] RIP: 0033:0x7f531b98bf46
[ 1100.063349] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 1100.064309] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 1100.065218] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 1100.066125] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 1100.067033] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 1100.067935] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 1100.068842] Code: 75 27 be 04 00 00 00 48 89 df e8 d3 66 36 00 89 e8
f0 44 0f b1 33 85 c0 75 c3 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3
f3 90 <eb> b0 81 fe 00 01 00 00 89 f5 0f 84 0e 03 00 00 41 bd 01 01 00
[ 1128.037029] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [sshd:2613]
[ 1128.037926] Modules linked in:
[ 1128.038327] irq event stamp: 0
[ 1128.038735] hardirqs last enabled at (0): [<0000000000000000>]
(null)
[ 1128.039702] hardirqs last disabled at (0): [<ffffffffb8f05791>]
copy_process.part.50+0x1111/0x6120
[ 1128.040858] softirqs last enabled at (0): [<ffffffffb8f05834>]
copy_process.part.50+0x11b4/0x6120
[ 1128.042006] softirqs last disabled at (0): [<0000000000000000>]
(null)
[ 1128.042967] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W L
4.17.0-rc1+ #2
[ 1128.043955] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 1128.045188] RIP: 0010:queued_spin_lock_slowpath+0x89/0x690
[ 1128.045905] RSP: 0018:ffff880066197a00 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffff13
[ 1128.046890] RAX: 0000000000000000 RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 1128.047820] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 1128.048746] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 1128.049669] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 1128.050593] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 1128.051519] FS: 00007f531d6157c0(0000) GS:ffff88006d100000(0000)
knlGS:0000000000000000
[ 1128.052558] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1128.053304] CR2: 00000000000000f8 CR3: 000000006b03e000 CR4:
00000000000006e0
[ 1128.054224] Call Trace:
[ 1128.054560] do_raw_spin_lock+0x15b/0x1e0
[ 1128.055091] copy_page_range+0x977/0x1a70
[ 1128.055637] ? lock_downgrade+0x5e0/0x5e0
[ 1128.056166] ? vm_iomap_memory+0x150/0x150
[ 1128.056706] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1128.057334] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1128.057964] copy_process.part.50+0x5be4/0x6120
[ 1128.058566] ? __cleanup_sighand+0x40/0x40
[ 1128.059103] ? lock_downgrade+0x5e0/0x5e0
[ 1128.059643] ? get_unused_fd_flags+0xc0/0xc0
[ 1128.060211] _do_fork+0x1c1/0xd20
[ 1128.060656] ? fork_idle+0x2d0/0x2d0
[ 1128.061132] ? __do_pipe_flags+0x230/0x230
[ 1128.061675] ? signal_fault+0x2b0/0x2b0
[ 1128.062188] do_syscall_64+0x9f/0x470
[ 1128.062678] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1128.063342] RIP: 0033:0x7f531b98bf46
[ 1128.063818] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 1128.064802] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 1128.065728] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 1128.066652] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 1128.067586] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 1128.068511] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 1128.069440] Code: 75 27 be 04 00 00 00 48 89 df e8 d3 66 36 00 89 e8
f0 44 0f b1 33 85 c0 75 c3 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3
f3 90 <eb> b0 81 fe 00 01 00 00 89 f5 0f 84 0e 03 00 00 41 bd 01 01 00
[ 1156.037029] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [sshd:2613]
[ 1156.037918] Modules linked in:
[ 1156.038320] irq event stamp: 0
[ 1156.038720] hardirqs last enabled at (0): [<0000000000000000>]
(null)
[ 1156.039667] hardirqs last disabled at (0): [<ffffffffb8f05791>]
copy_process.part.50+0x1111/0x6120
[ 1156.040811] softirqs last enabled at (0): [<ffffffffb8f05834>]
copy_process.part.50+0x11b4/0x6120
[ 1156.041959] softirqs last disabled at (0): [<0000000000000000>]
(null)
[ 1156.042904] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W L
4.17.0-rc1+ #2
[ 1156.043869] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 1156.045073] RIP: 0010:queued_spin_lock_slowpath+0x89/0x690
[ 1156.045774] RSP: 0018:ffff880066197a00 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffff13
[ 1156.046737] RAX: 0000000000000000 RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 1156.047644] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 1156.048554] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 1156.049460] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 1156.050364] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 1156.051270] FS: 00007f531d6157c0(0000) GS:ffff88006d100000(0000)
knlGS:0000000000000000
[ 1156.052301] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1156.053037] CR2: 00000000000000f8 CR3: 000000006b03e000 CR4:
00000000000006e0
[ 1156.053944] Call Trace:
[ 1156.054278] do_raw_spin_lock+0x15b/0x1e0
[ 1156.054801] copy_page_range+0x977/0x1a70
[ 1156.055330] ? lock_downgrade+0x5e0/0x5e0
[ 1156.055856] ? vm_iomap_memory+0x150/0x150
[ 1156.056388] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1156.057005] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1156.057623] copy_process.part.50+0x5be4/0x6120
[ 1156.058216] ? __cleanup_sighand+0x40/0x40
[ 1156.058749] ? lock_downgrade+0x5e0/0x5e0
[ 1156.059274] ? get_unused_fd_flags+0xc0/0xc0
[ 1156.059840] _do_fork+0x1c1/0xd20
[ 1156.060275] ? fork_idle+0x2d0/0x2d0
[ 1156.060744] ? __do_pipe_flags+0x230/0x230
[ 1156.061278] ? signal_fault+0x2b0/0x2b0
[ 1156.061781] do_syscall_64+0x9f/0x470
[ 1156.062265] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1156.062917] RIP: 0033:0x7f531b98bf46
[ 1156.063383] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 1156.064352] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 1156.065257] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 1156.066161] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 1156.067068] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 1156.067977] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 1156.068889] Code: 75 27 be 04 00 00 00 48 89 df e8 d3 66 36 00 89 e8
f0 44 0f b1 33 85 c0 75 c3 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3
f3 90 <eb> b0 81 fe 00 01 00 00 89 f5 0f 84 0e 03 00 00 41 bd 01 01 00
[ 1160.079026] INFO: rcu_sched self-detected stall on CPU
[ 1160.079719] 1-....: (1 GPs behind) idle=4de/1/4611686018427387906
softirq=5324/5394 fqs=75834
[ 1160.080825] (t=304003 jiffies g=2337 c=2336 q=35)
[ 1160.081454] NMI backtrace for cpu 1
[ 1160.081912] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W L
4.17.0-rc1+ #2
[ 1160.082872] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 1160.084077] Call Trace:
[ 1160.084407] <IRQ>
[ 1160.084688] dump_stack+0xca/0x13e
[ 1160.085142] ? lapic_can_unplug_cpu+0x90/0x90
[ 1160.085710] nmi_cpu_backtrace+0x153/0x170
[ 1160.086244] ? lapic_can_unplug_cpu+0x90/0x90
[ 1160.086808] nmi_trigger_cpumask_backtrace+0x117/0x170
[ 1160.087476] rcu_dump_cpu_stacks+0x186/0x1d4
[ 1160.088039] rcu_check_callbacks+0x1a2b/0x1d10
[ 1160.088618] ? cpuacct_account_field+0x153/0x2d0
[ 1160.089218] update_process_times+0x28/0x60
[ 1160.089763] tick_sched_handle+0x79/0x150
[ 1160.090291] tick_sched_timer+0x40/0x110
[ 1160.090806] __hrtimer_run_queues+0x2d6/0xb90
[ 1160.091374] ? tick_sched_do_timer+0x150/0x150
[ 1160.091959] ? hrtimer_cancel+0x40/0x40
[ 1160.092464] ? kvm_clock_get_cycles+0x21/0x30
[ 1160.093030] ? ktime_get_update_offsets_now+0x1d5/0x2c0
[ 1160.093705] hrtimer_interrupt+0x24e/0x620
[ 1160.094244] smp_apic_timer_interrupt+0xc4/0x4b0
[ 1160.094847] apic_timer_interrupt+0xf/0x20
[ 1160.095379] </IRQ>
[ 1160.095673] RIP: 0010:queued_spin_lock_slowpath+0x89/0x690
[ 1160.096382] RSP: 0018:ffff880066197a00 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffff13
[ 1160.097344] RAX: 0000000000000000 RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 1160.098250] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 1160.099157] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 1160.100064] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 1160.100970] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 1160.101880] ? queued_spin_lock_slowpath+0x48/0x690
[ 1160.102514] do_raw_spin_lock+0x15b/0x1e0
[ 1160.103037] copy_page_range+0x977/0x1a70
[ 1160.103568] ? lock_downgrade+0x5e0/0x5e0
[ 1160.104094] ? vm_iomap_memory+0x150/0x150
[ 1160.104625] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1160.105245] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1160.105865] copy_process.part.50+0x5be4/0x6120
[ 1160.106456] ? __cleanup_sighand+0x40/0x40
[ 1160.106985] ? lock_downgrade+0x5e0/0x5e0
[ 1160.107507] ? get_unused_fd_flags+0xc0/0xc0
[ 1160.108069] _do_fork+0x1c1/0xd20
[ 1160.108506] ? fork_idle+0x2d0/0x2d0
[ 1160.108973] ? __do_pipe_flags+0x230/0x230
[ 1160.109510] ? signal_fault+0x2b0/0x2b0
[ 1160.110012] do_syscall_64+0x9f/0x470
[ 1160.110492] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1160.111138] RIP: 0033:0x7f531b98bf46
[ 1160.111606] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 1160.112572] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 1160.113479] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 1160.114380] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 1160.115287] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 1160.116193] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 1188.037016] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [sshd:2613]
[ 1188.037963] Modules linked in:
[ 1188.038391] irq event stamp: 0
[ 1188.038800] hardirqs last enabled at (0): [<0000000000000000>]
(null)
[ 1188.039787] hardirqs last disabled at (0): [<ffffffffb8f05791>]
copy_process.part.50+0x1111/0x6120
[ 1188.040964] softirqs last enabled at (0): [<ffffffffb8f05834>]
copy_process.part.50+0x11b4/0x6120
[ 1188.042154] softirqs last disabled at (0): [<0000000000000000>]
(null)
[ 1188.043127] CPU: 1 PID: 2613 Comm: sshd Tainted: G D W L
4.17.0-rc1+ #2
[ 1188.044124] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 1188.045393] RIP: 0010:queued_spin_lock_slowpath+0x89/0x690
[ 1188.046128] RSP: 0018:ffff880066197a00 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffff13
[ 1188.047129] RAX: 0000000000000000 RBX: ffff880066d3e008 RCX:
ffffffffb9022268
[ 1188.048070] RDX: 0000000000000000 RSI: 0000000000000004 RDI:
ffff880066d3e008
[ 1188.048989] RBP: 000000000002801d R08: ffffed000cda7c02 R09:
ffffed000cda7c01
[ 1188.049892] R10: 0000000000000001 R11: ffff880066d3e00b R12:
0000000000000003
[ 1188.050826] R13: ffffed000cda7c01 R14: 0000000000000001 R15:
0000000000000000
[ 1188.051759] FS: 00007f531d6157c0(0000) GS:ffff88006d100000(0000)
knlGS:0000000000000000
[ 1188.052817] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1188.053551] CR2: 00000000000000f8 CR3: 000000006b03e000 CR4:
00000000000006e0
[ 1188.054456] Call Trace:
[ 1188.054793] do_raw_spin_lock+0x15b/0x1e0
[ 1188.055326] copy_page_range+0x977/0x1a70
[ 1188.055855] ? lock_downgrade+0x5e0/0x5e0
[ 1188.056380] ? vm_iomap_memory+0x150/0x150
[ 1188.056912] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1188.057529] ? vma_compute_subtree_gap+0x18f/0x1f0
[ 1188.058149] copy_process.part.50+0x5be4/0x6120
[ 1188.058742] ? __cleanup_sighand+0x40/0x40
[ 1188.059272] ? lock_downgrade+0x5e0/0x5e0
[ 1188.059795] ? get_unused_fd_flags+0xc0/0xc0
[ 1188.060362] _do_fork+0x1c1/0xd20
[ 1188.060798] ? fork_idle+0x2d0/0x2d0
[ 1188.061263] ? __do_pipe_flags+0x230/0x230
[ 1188.061798] ? signal_fault+0x2b0/0x2b0
[ 1188.062298] do_syscall_64+0x9f/0x470
[ 1188.062783] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1188.063432] RIP: 0033:0x7f531b98bf46
[ 1188.063895] RSP: 002b:00007fff4499b000 EFLAGS: 00000246 ORIG_RAX:
0000000000000038
[ 1188.064861] RAX: ffffffffffffffda RBX: 00007fff4499b000 RCX:
00007f531b98bf46
[ 1188.065762] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000001200011
[ 1188.066665] RBP: 00007fff4499b060 R08: 0000000000000a35 R09:
0000000000000a35
[ 1188.067565] R10: 00007f531d615a90 R11: 0000000000000246 R12:
0000000000000000
[ 1188.068483] R13: 00007fff4499b020 R14: 0000000000000000 R15:
00005634d0d6bca0
[ 1188.069387] Code: 75 27 be 04 00 00 00 48 89 df e8 d3 66 36 00 89 e8
f0 44 0f b1 33 85 c0 75 c3 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3
f3 90 <eb> b0 81 fe 00 01 00 00 89 f5 0f 84 0e 03 00 00 41 bd 01 01 00