INFO: task jbd2/sda1-8:5173 blocked for more than 143 seconds.
Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D stack:26176 pid:5173 tgid:5173 ppid:2 task_flags:0x240040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6856
io_schedule+0xbf/0x130 kernel/sched/core.c:7689
bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
__wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
__wait_on_buffer+0x64/0x70 fs/buffer.c:123
wait_on_buffer include/linux/buffer_head.h:414 [inline]
jbd2_journal_commit_transaction+0x3823/0x6760 fs/jbd2/commit.c:810
kjournald2+0x1f8/0x760 fs/jbd2/journal.c:201
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz-executor:5829 blocked for more than 143 seconds.
Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:23520 pid:5829 tgid:5829 ppid:5827 task_flags:0x440100 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6856
io_schedule+0xbf/0x130 kernel/sched/core.c:7689
bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
__wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x6a/0x340 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5831
__ext4_mark_inode_dirty+0x1ab/0x860 fs/ext4/inode.c:6005
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6042
__mark_inode_dirty+0x1ec/0xe50 fs/fs-writeback.c:2515
generic_update_time+0xcf/0xf0 fs/inode.c:2112
inode_update_time fs/inode.c:2125 [inline]
__file_update_time fs/inode.c:2353 [inline]
file_update_time+0x17d/0x1c0 fs/inode.c:2383
ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6160
do_page_mkwrite+0x177/0x380 mm/memory.c:3244
wp_page_shared mm/memory.c:3645 [inline]
do_wp_page+0xc0f/0x4560 mm/memory.c:3795
handle_pte_fault mm/memory.c:5905 [inline]
__handle_mm_fault+0x1c7c/0x2c60 mm/memory.c:6032
handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6201
do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1337
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fbd8b867195
RSP: 002b:00007ffc4c3cfae0 EFLAGS: 00010212
RAX: 00007fbd88be2534 RBX: 00007ffc4c3cfbe0 RCX: 0000000000000000
RDX: 00007fbd88be2530 RSI: 0000000000000008 RDI: 00007ffc4c3cfbe0
RBP: 00000000000003e6 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffc4c3cfbc0 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000001dacc R14: fffffffffffe2534 R15: 000000000001dacc
INFO: task kworker/u8:42:7831 blocked for more than 144 seconds.
Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:42 state:D stack:23728 pid:7831 tgid:7831 ppid:2 task_flags:0x4248060 flags:0x00004000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6856
io_schedule+0xbf/0x130 kernel/sched/core.c:7689
bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
__wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x6a/0x340 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5831
__ext4_mark_inode_dirty+0x1ab/0x860 fs/ext4/inode.c:6005
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6042
__mark_inode_dirty+0x1ec/0xe50 fs/fs-writeback.c:2515
mark_inode_dirty_sync include/linux/fs.h:2540 [inline]
dquot_claim_block include/linux/quotaops.h:363 [inline]
ext4_da_update_reserve_space+0x2b7/0x760 fs/ext4/inode.c:362
ext4_es_insert_extent+0xc03/0x11d0 fs/ext4/extents_status.c:947
ext4_map_create_blocks fs/ext4/inode.c:566 [inline]
ext4_map_blocks+0x8f3/0x1370 fs/ext4/inode.c:702
mpage_map_one_extent fs/ext4/inode.c:2219 [inline]
mpage_map_and_submit_extent fs/ext4/inode.c:2272 [inline]
ext4_do_writepages+0x198d/0x32d0 fs/ext4/inode.c:2735
ext4_writepages+0x303/0x730 fs/ext4/inode.c:2824
do_writepages+0x1b3/0x820 mm/page-writeback.c:2687
__writeback_single_inode+0x166/0xfa0 fs/fs-writeback.c:1680
writeback_sb_inodes+0x606/0xfa0 fs/fs-writeback.c:1976
__writeback_inodes_wb+0xff/0x2e0 fs/fs-writeback.c:2047
wb_writeback+0x803/0xb80 fs/fs-writeback.c:2158
wb_check_old_data_flush fs/fs-writeback.c:2262 [inline]
wb_do_writeback fs/fs-writeback.c:2315 [inline]
wb_workfn+0x8c0/0xbc0 fs/fs-writeback.c:2343
process_one_work+0x958/0x1b30 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3317 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.2.614:8769 blocked for more than 144 seconds.
Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.614 state:D stack:27760 pid:8769 tgid:8769 ppid:5840 task_flags:0x440040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6856
io_schedule+0xbf/0x130 kernel/sched/core.c:7689
bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
__wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x6a/0x340 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5831
__ext4_mark_inode_dirty+0x1ab/0x860 fs/ext4/inode.c:6005
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6042
__mark_inode_dirty+0x1ec/0xe50 fs/fs-writeback.c:2515
generic_update_time+0xcf/0xf0 fs/inode.c:2112
inode_update_time fs/inode.c:2125 [inline]
__file_update_time fs/inode.c:2353 [inline]
file_update_time+0x17d/0x1c0 fs/inode.c:2383
ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6160
do_page_mkwrite+0x177/0x380 mm/memory.c:3244
do_shared_fault mm/memory.c:5468 [inline]
do_fault mm/memory.c:5530 [inline]
do_pte_missing+0x29e/0x3e10 mm/memory.c:4047
handle_pte_fault mm/memory.c:5889 [inline]
__handle_mm_fault+0x1166/0x2c60 mm/memory.c:6032
handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6201
do_user_addr_fault+0x7a3/0x13f0 arch/x86/mm/fault.c:1388
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fa346554d65
RSP: 002b:00007fff6f8d8db8 EFLAGS: 00010212
RAX: 0000001b315c7068 RBX: 0000000000043160 RCX: 0000000000043128
RDX: 0000000000043160 RSI: 00007fa345bff040 RDI: 0000001b315c70a0
RBP: 00007fa3472d5720 R08: 0000001b315c7068 R09: ffff8077eb9c8060
R10: 0000000000000061 R11: 00007fa345bff208 R12: 00007fa345bff008
R13: fffffffffffa7068 R14: 0000000000000000 R15: 000000000000218b
INFO: task syz.3.616:8772 blocked for more than 144 seconds.
Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.616 state:D stack:25952 pid:8772 tgid:8772 ppid:5851 task_flags:0x440040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6856
io_schedule+0xbf/0x130 kernel/sched/core.c:7689
bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
__wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x6a/0x340 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5831
__ext4_mark_inode_dirty+0x1ab/0x860 fs/ext4/inode.c:6005
ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6042
__mark_inode_dirty+0x1ec/0xe50 fs/fs-writeback.c:2515
generic_update_time+0xcf/0xf0 fs/inode.c:2112
inode_update_time fs/inode.c:2125 [inline]
__file_update_time fs/inode.c:2353 [inline]
file_update_time+0x17d/0x1c0 fs/inode.c:2383
ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6160
do_page_mkwrite+0x177/0x380 mm/memory.c:3244
do_shared_fault mm/memory.c:5468 [inline]
do_fault mm/memory.c:5530 [inline]
do_pte_missing+0x29e/0x3e10 mm/memory.c:4047
handle_pte_fault mm/memory.c:5889 [inline]
__handle_mm_fault+0x1166/0x2c60 mm/memory.c:6032
handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6201
do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1337
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f23f606d12a
RSP: 002b:00007ffc4bd09f10 EFLAGS: 00010202
RAX: 0000001b30cf6000 RBX: 00007f23f6ed5720 RCX: 0000001b30cf5ff8
RDX: 0000001b30920220 RSI: 0000000000000008 RDI: 00007f23f6ed5720
RBP: ffffffff8199e00e R08: 00007f23f63a6118 R09: 00007f23f6392000
R10: 00007f23f53fd008 R11: 0000000000000010 R12: 0000000000000010
R13: 000000000000016c R14: ffffffff8199e08b R15: 0000000000000244
INFO: task syz.3.616:8776 blocked for more than 145 seconds.
Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.616 state:D stack:25840 pid:8776 tgid:8772 ppid:5851 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6856
io_schedule+0xbf/0x130 kernel/sched/core.c:7689
folio_wait_bit_common+0x3d8/0x9b0 mm/filemap.c:1318
folio_wait_writeback+0x3c/0x90 mm/page-writeback.c:3179
__filemap_fdatawait_range+0x123/0x210 mm/filemap.c:542
filemap_write_and_wait_range mm/filemap.c:703 [inline]
filemap_write_and_wait_range+0xeb/0x130 mm/filemap.c:685
ext4_punch_hole+0x194/0x10d0 fs/ext4/inode.c:3964
ext4_fallocate+0x9b7/0x3950 fs/ext4/extents.c:4772
vfs_fallocate+0x60d/0x10d0 fs/open.c:338
madvise_remove mm/madvise.c:1025 [inline]
madvise_vma_behavior+0x1c8b/0x1dd0 mm/madvise.c:1260
madvise_walk_vmas+0x1cf/0x2c0 mm/madvise.c:1502
do_madvise+0x366/0x7c0 mm/madvise.c:1689
__do_sys_madvise mm/madvise.c:1705 [inline]
__se_sys_madvise mm/madvise.c:1703 [inline]
__x64_sys_madvise+0xa9/0x110 mm/madvise.c:1703
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f23f618cde9
RSP: 002b:00007f23f6eff038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f23f63a6160 RCX: 00007f23f618cde9
RDX: 0000000000000009 RSI: ffffffffffff0001 RDI: 0000000000000000
RBP: 00007f23f620e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f23f63a6160 R15: 00007ffc4bd09ec8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e1bc140 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1bc140 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1bc140 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6746
2 locks held by klogd/5200:
#0: ffff8880b873ed58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:598
#1: ffff8880b8728a88 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: __wake_up_common_lock kernel/sched/wait.c:105 [inline]
#1: ffff8880b8728a88 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: __wake_up_sync_key+0x1c/0x50 kernel/sched/wait.c:173
3 locks held by syz-executor/5829:
#0: ffff88802fdce148 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
#0: ffff88802fdce148 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6367
#1: ffff888030208518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3244
#2: ffff88803020c950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
2 locks held by getty/7481:
#0: ffff888031e710a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc9000bbce2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
6 locks held by kworker/u8:42/7831:
#0: ffff88801e68c948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x12cd/0x1b30 kernel/workqueue.c:3211
#1: ffffc90002f17d18 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3212
#2: ffff8880302080e0 (&type->s_umount_key#31){++++}-{4:4}, at: super_trylock_shared+0x1e/0xf0 fs/super.c:562
#3: ffff88803020ab98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b3/0x820 mm/page-writeback.c:2687
#4: ffff88803020c950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
#5: ffff8880769a2a28 (&ei->i_data_sem){++++}-{4:4}, at: ext4_map_blocks+0x352/0x1370 fs/ext4/inode.c:701
3 locks held by syz.2.614/8769:
#0: ffff88803389efe0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_trylock include/linux/mmap_lock.h:209 [inline]
#0: ffff88803389efe0 (&mm->mmap_lock){++++}-{4:4}, at: get_mmap_lock_carefully mm/memory.c:6238 [inline]
#0: ffff88803389efe0 (&mm->mmap_lock){++++}-{4:4}, at: lock_mm_and_find_vma+0x35/0x6e0 mm/memory.c:6298
#1: ffff888030208518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3244
#2: ffff88803020c950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
3 locks held by syz.3.616/8772:
#0: ffff8880773a5808 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline]
#0: ffff8880773a5808 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6367
#1: ffff888030208518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3244
#2: ffff88803020c950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
1 lock held by syz.3.616/8776:
#0: ffff888030208420 (sb_writers#4){.+.+}-{0:0}, at: madvise_remove mm/madvise.c:1025 [inline]
#0: ffff888030208420 (sb_writers#4){.+.+}-{0:0}, at: madvise_vma_behavior+0x1c8b/0x1dd0 mm/madvise.c:1260
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
watchdog+0xf62/0x12b0 kernel/hung_task.c:399
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:111