RBP: 000000000072bea0 R08: 0000000020000480 R09: 0000000000000000
R10: 0000000020000300 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000052 R14: 00000000006f5850 R15: 0000000000000003
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
(ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 29170 Comm: blkid Not tainted 4.17.0-rc7+ #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__delayacct_blkio_end+0x4f/0xc0 kernel/delayacct.c:82
RSP: 0018:ffff8801dae06aa0 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff8801b5c84638
RDX: 0000000000000007 RSI: ffffffff817a5061 RDI: 0000000000000038
RBP: ffff8801dae06ab8 R08: ffffed003b5c46d3 R09: 0000000000000001
R10: ffff8801dae06b48 R11: ffff8801dae23693 R12: ffff8801af288440
R13: ffff8801b5c84600 R14: ffff8801b5c8463c R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd5644dd4a0 CR3: 00000001c9336000 CR4: 00000000001426f0
DR0: 000000000000b8c4 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
delayacct_blkio_end include/linux/delayacct.h:128 [inline]
try_to_wake_up+0xaa5/0x1280 kernel/sched/core.c:2054
default_wake_function+0x30/0x50 kernel/sched/core.c:3756
autoremove_wake_function+0x7a/0x350 kernel/sched/wait.c:373
wake_bit_function+0xcb/0x160 kernel/sched/wait_bit.c:30
__wake_up_common+0x189/0x730 kernel/sched/wait.c:90
__wake_up_common_lock+0x1b4/0x300 kernel/sched/wait.c:119
__wake_up+0xe/0x10 kernel/sched/wait.c:143
__wake_up_bit+0x1a6/0x270 kernel/sched/wait_bit.c:125
wake_up_bit+0x3d/0x40 kernel/sched/wait_bit.c:148
journal_end_buffer_io_sync+0xa4/0xe0 fs/jbd2/commit.c:44
end_bio_bh_io_sync+0xf3/0x140 fs/buffer.c:2969
bio_endio+0x4b8/0x920 block/bio.c:1775
req_bio_endio block/blk-core.c:284 [inline]
blk_update_request+0x3a3/0xcb0 block/blk-core.c:3100
scsi_end_request+0xd3/0x870 drivers/scsi/scsi_lib.c:672
scsi_io_completion+0xca9/0x1d10 drivers/scsi/scsi_lib.c:898
scsi_finish_command+0x542/0x8d0 drivers/scsi/scsi.c:248
scsi_softirq_done+0x3d9/0x4b0 drivers/scsi/scsi_lib.c:1683
__blk_mq_complete_request+0x4c8/0x9f0 block/blk-mq.c:567
blk_mq_complete_request+0x2a5/0x370 block/blk-mq.c:652
scsi_mq_done+0xe2/0x430 drivers/scsi/scsi_lib.c:1994
virtscsi_complete_cmd+0x573/0x740 drivers/scsi/virtio_scsi.c:207
virtscsi_vq_done+0xc3/0x170 drivers/scsi/virtio_scsi.c:223
virtscsi_req_done+0xa7/0xd0 drivers/scsi/virtio_scsi.c:238
vring_interrupt+0x128/0x170 drivers/virtio/virtio_ring.c:950
__handle_irq_event_percpu+0x1c0/0xad0 kernel/irq/handle.c:149
handle_irq_event_percpu+0x98/0x1c0 kernel/irq/handle.c:189
handle_irq_event+0xa7/0x135 kernel/irq/handle.c:206
handle_edge_irq+0x20f/0x870 kernel/irq/chip.c:791
generic_handle_irq_desc include/linux/irqdesc.h:159 [inline]
handle_irq+0x18c/0x2e7 arch/x86/kernel/irq_64.c:77
do_IRQ+0x78/0x190 arch/x86/kernel/irq.c:245
common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:642
</IRQ>
RIP: 0010:__vma_adjust+0xae7/0x1840 mm/mmap.c:977
RSP: 0018:ffff8801b634fac8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffda
RAX: 0000000000000000 RBX: ffff8801d2f30880 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81a952b0 RDI: ffffed0036c69f38
RBP: ffff8801b634fb98 R08: ffffffff81a4eed0 R09: ffff8801d1d14a50
R10: ffff8801af288ca0 R11: ffff8801af288440 R12: dffffc0000000000
R13: 00007fd5642bf000 R14: 00007fd5640bb000 R15: ffff8801b9270d68
vma_adjust include/linux/mm.h:2163 [inline]
__split_vma+0x66d/0x7f0 mm/mmap.c:2654
split_vma+0xa3/0xe0 mm/mmap.c:2686
mprotect_fixup+0x4e8/0x700 mm/mprotect.c:362
do_mprotect_pkey+0x5c9/0xa50 mm/mprotect.c:506
__do_sys_mprotect mm/mprotect.c:531 [inline]
__se_sys_mprotect mm/mprotect.c:528 [inline]
__x64_sys_mprotect+0x78/0xb0 mm/mprotect.c:528
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fd5642d5447
RSP: 002b:00007ffd1df8d108 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007fd5644dd4c8 RCX: 00007fd5642d5447
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 00007fd5640bb000
RBP: 00007ffd1df8d3d0 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000206 R12: 00007ffd1df8d4b8
R13: 0000000000000002 R14: 0000000000000030 R15: 00007ffd1df8d150
Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 80 00 00 00 48 8b 9b 30 12 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 38 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 04 3c 03 7e 51 44 8b 63 38 31 ff 41 83 e4
RIP: __delayacct_blkio_end+0x4f/0xc0 kernel/delayacct.c:82 RSP: ffff8801dae06aa0
======================================================
WARNING: possible circular locking dependency detected
4.17.0-rc7+ #81 Not tainted
------------------------------------------------------
blkid/29170 is trying to acquire lock:
00000000be766bbd ((console_sem).lock){-.-.}, at: down_trylock+0x13/0x70 kernel/locking/semaphore.c:136
but task is already holding lock:
000000003ca4921b (&p->pi_lock){-.-.}, at: try_to_wake_up+0xca/0x1280 kernel/sched/core.c:1983
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&p->pi_lock){-.-.}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152
try_to_wake_up+0xca/0x1280 kernel/sched/core.c:1983
wake_up_process+0x10/0x20 kernel/sched/core.c:2146
__up.isra.1+0x1b8/0x290 kernel/locking/semaphore.c:262
up+0x12f/0x1b0 kernel/locking/semaphore.c:187
__up_console_sem+0xbe/0x1b0 kernel/printk/printk.c:242
console_unlock+0x7d6/0x1100 kernel/printk/printk.c:2417
do_con_write+0x12b2/0x2280 drivers/tty/vt/vt.c:2437
con_write+0x25/0xc0 drivers/tty/vt/vt.c:2786
process_output_block drivers/tty/n_tty.c:579 [inline]
n_tty_write+0x6b9/0x1180 drivers/tty/n_tty.c:2308
do_tty_write drivers/tty/tty_io.c:958 [inline]
tty_write+0x3f1/0x880 drivers/tty/tty_io.c:1042
__vfs_write+0x10b/0x960 fs/read_write.c:485
vfs_write+0x1f8/0x560 fs/read_write.c:549
ksys_write+0xf9/0x250 fs/read_write.c:598
__do_sys_write fs/read_write.c:610 [inline]
__se_sys_write fs/read_write.c:607 [inline]
__x64_sys_write+0x73/0xb0 fs/read_write.c:607
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #0 ((console_sem).lock){-.-.}:
lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3920
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152
down_trylock+0x13/0x70 kernel/locking/semaphore.c:136
__down_trylock_console_sem+0xae/0x200 kernel/printk/printk.c:225
console_trylock+0x15/0xa0 kernel/printk/printk.c:2229
console_trylock_spinning kernel/printk/printk.c:1643 [inline]
vprintk_emit+0x694/0xdd0 kernel/printk/printk.c:1906
vprintk_default+0x28/0x30 kernel/printk/printk.c:1947
vprintk_func+0x7a/0xe7 kernel/printk/printk_safe.c:379
printk+0x9e/0xba kernel/printk/printk.c:1980
kasan_die_handler.cold.22+0x11/0x30 arch/x86/mm/kasan_init_64.c:253
notifier_call_chain+0x178/0x380 kernel/notifier.c:93
__atomic_notifier_call_chain kernel/notifier.c:183 [inline]
atomic_notifier_call_chain+0x98/0x190 kernel/notifier.c:193
notify_die+0x1a3/0x2b0 kernel/notifier.c:549
do_general_protection+0x248/0x2f0 arch/x86/kernel/traps.c:558
general_protection+0x1e/0x30 arch/x86/entry/entry_64.S:1159
__delayacct_blkio_end+0x4f/0xc0 kernel/delayacct.c:82
delayacct_blkio_end include/linux/delayacct.h:128 [inline]
try_to_wake_up+0xaa5/0x1280 kernel/sched/core.c:2054
default_wake_function+0x30/0x50 kernel/sched/core.c:3756
autoremove_wake_function+0x7a/0x350 kernel/sched/wait.c:373
wake_bit_function+0xcb/0x160 kernel/sched/wait_bit.c:30
__wake_up_common+0x189/0x730 kernel/sched/wait.c:90
__wake_up_common_lock+0x1b4/0x300 kernel/sched/wait.c:119
__wake_up+0xe/0x10 kernel/sched/wait.c:143
__wake_up_bit+0x1a6/0x270 kernel/sched/wait_bit.c:125
wake_up_bit+0x3d/0x40 kernel/sched/wait_bit.c:148
journal_end_buffer_io_sync+0xa4/0xe0 fs/jbd2/commit.c:44
end_bio_bh_io_sync+0xf3/0x140 fs/buffer.c:2969
bio_endio+0x4b8/0x920 block/bio.c:1775
req_bio_endio block/blk-core.c:284 [inline]
blk_update_request+0x3a3/0xcb0 block/blk-core.c:3100
scsi_end_request+0xd3/0x870 drivers/scsi/scsi_lib.c:672
scsi_io_completion+0xca9/0x1d10 drivers/scsi/scsi_lib.c:898
scsi_finish_command+0x542/0x8d0 drivers/scsi/scsi.c:248
scsi_softirq_done+0x3d9/0x4b0 drivers/scsi/scsi_lib.c:1683
__blk_mq_complete_request+0x4c8/0x9f0 block/blk-mq.c:567
blk_mq_complete_request+0x2a5/0x370 block/blk-mq.c:652
scsi_mq_done+0xe2/0x430 drivers/scsi/scsi_lib.c:1994
virtscsi_complete_cmd+0x573/0x740 drivers/scsi/virtio_scsi.c:207
virtscsi_vq_done+0xc3/0x170 drivers/scsi/virtio_scsi.c:223
virtscsi_req_done+0xa7/0xd0 drivers/scsi/virtio_scsi.c:238
vring_interrupt+0x128/0x170 drivers/virtio/virtio_ring.c:950
__handle_irq_event_percpu+0x1c0/0xad0 kernel/irq/handle.c:149
handle_irq_event_percpu+0x98/0x1c0 kernel/irq/handle.c:189
handle_irq_event+0xa7/0x135 kernel/irq/handle.c:206
handle_edge_irq+0x20f/0x870 kernel/irq/chip.c:791
generic_handle_irq_desc include/linux/irqdesc.h:159 [inline]
handle_irq+0x18c/0x2e7 arch/x86/kernel/irq_64.c:77
do_IRQ+0x78/0x190 arch/x86/kernel/irq.c:245
ret_from_intr+0x0/0x1e
__vma_adjust+0xae7/0x1840 mm/mmap.c:977
vma_adjust include/linux/mm.h:2163 [inline]
__split_vma+0x66d/0x7f0 mm/mmap.c:2654
split_vma+0xa3/0xe0 mm/mmap.c:2686
mprotect_fixup+0x4e8/0x700 mm/mprotect.c:362
do_mprotect_pkey+0x5c9/0xa50 mm/mprotect.c:506
__do_sys_mprotect mm/mprotect.c:531 [inline]
__se_sys_mprotect mm/mprotect.c:528 [inline]
__x64_sys_mprotect+0x78/0xb0 mm/mprotect.c:528
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x49/0xbe
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&p->pi_lock);
lock((console_sem).lock);
lock(&p->pi_lock);
lock((console_sem).lock);
*** DEADLOCK ***
7 locks held by blkid/29170:
#0: 0000000031508b99 (&mm->mmap_sem){++++}, at: do_mprotect_pkey+0x1e9/0xa50 mm/mprotect.c:434
#1: 0000000014e969d0 (&mapping->i_mmap_rwsem){++++}, at: i_mmap_lock_write include/linux/fs.h:468 [inline]
#1: 0000000014e969d0 (&mapping->i_mmap_rwsem){++++}, at: __vma_adjust+0x225/0x1840 mm/mmap.c:799
#2: 000000001a2e1d5c (&(&virtscsi_vq->vq_lock)->rlock){-.-.}, at: virtscsi_vq_done+0x9d/0x170 drivers/scsi/virtio_scsi.c:219
#3: 000000002d17cbe4 (rcu_read_lock){....}, at: hctx_lock+0x7a/0x1d0 block/blk-mq.c:586
#4: 00000000856658d3 (bit_wait_table + i){-.-.}, at: __wake_up_common_lock+0x190/0x300 kernel/sched/wait.c:118
#5: 000000003ca4921b (&p->pi_lock){-.-.}, at: try_to_wake_up+0xca/0x1280 kernel/sched/core.c:1983
#6: 000000002d17cbe4 (rcu_read_lock){....}, at: atomic_notifier_call_chain+0x0/0x190 include/linux/compiler.h:188
stack backtrace:
CPU: 0 PID: 29170 Comm: blkid Not tainted 4.17.0-rc7+ #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1b9/0x294 lib/dump_stack.c:113
print_circular_bug.isra.36.cold.54+0x1bd/0x27d kernel/locking/lockdep.c:1223
check_prev_add kernel/locking/lockdep.c:1863 [inline]
check_prevs_add kernel/locking/lockdep.c:1976 [inline]
validate_chain kernel/locking/lockdep.c:2417 [inline]
__lock_acquire+0x343e/0x5140 kernel/locking/lockdep.c:3431
lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3920
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152
down_trylock+0x13/0x70 kernel/locking/semaphore.c:136
__down_trylock_console_sem+0xae/0x200 kernel/printk/printk.c:225
console_trylock+0x15/0xa0 kernel/printk/printk.c:2229
console_trylock_spinning kernel/printk/printk.c:1643 [inline]
vprintk_emit+0x694/0xdd0 kernel/printk/printk.c:1906
vprintk_default+0x28/0x30 kernel/printk/printk.c:1947
vprintk_func+0x7a/0xe7 kernel/printk/printk_safe.c:379
printk+0x9e/0xba kernel/printk/printk.c:1980
kasan_die_handler.cold.22+0x11/0x30 arch/x86/mm/kasan_init_64.c:253
notifier_call_chain+0x178/0x380 kernel/notifier.c:93
__atomic_notifier_call_chain kernel/notifier.c:183 [inline]
atomic_notifier_call_chain+0x98/0x190 kernel/notifier.c:193
notify_die+0x1a3/0x2b0 kernel/notifier.c:549
do_general_protection+0x248/0x2f0 arch/x86/kernel/traps.c:558
general_protection+0x1e/0x30 arch/x86/entry/entry_64.S:1159
RIP: 0010:__delayacct_blkio_end+0x4f/0xc0 kernel/delayacct.c:82
RSP: 0018:ffff8801dae06aa0 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff8801b5c84638
RDX: 0000000000000007 RSI: ffffffff817a5061 RDI: 0000000000000038
RBP: ffff8801dae06ab8 R08: ffffed003b5c46d3 R09: 0000000000000001
R10: ffff8801dae06b48 R11: ffff8801dae23693 R12: ffff8801af288440
R13: ffff8801b5c84600 R14: ffff8801b5c8463c R15: 0000000000000002
delayacct_blkio_end include/linux/delayacct.h:128 [inline]
try_to_wake_up+0xaa5/0x1280 kernel/sched/core.c:2054
default_wake_function+0x30/0x50 kernel/sched/core.c:3756
autoremove_wake_function+0x7a/0x350 kernel/sched/wait.c:373
wake_bit_function+0xcb/0x160 kernel/sched/wait_bit.c:30
__wake_up_common+0x189/0x730 kernel/sched/wait.c:90
__wake_up_common_lock+0x1b4/0x300 kernel/sched/wait.c:119
__wake_up+0xe/0x10 kernel/sched/wait.c:143
__wake_up_bit+0x1a6/0x270 kernel/sched/wait_bit.c:125
wake_up_bit+0x3d/0x40 kernel/sched/wait_bit.c:148
journal_end_buffer_io_sync+0xa4/0xe0 fs/jbd2/commit.c:44
end_bio_bh_io_sync+0xf3/0x140 fs/buffer.c:2969
bio_endio+0x4b8/0x920 block/bio.c:1775
Lost 102 message(s)!
---[ end trace 78770f272ed76aca ]---