kauditd_printk_skb: 752 callbacks suppressed
audit: type=1400 audit(1519876217.625:3854): avc: denied { map } for pid=9383 comm="blkid" path="/sbin/blkid" dev="sda1" ino=16128 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1
INFO: task syz-executor2:9379 blocked for more than 120 seconds.
Not tainted 4.16.0-rc3+ #243
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor2 D20768 9379 7060 0x20020004
Call Trace:
context_switch kernel/sched/core.c:2862 [inline]
__schedule+0x8fb/0x1ec0 kernel/sched/core.c:3440
schedule+0xf5/0x430 kernel/sched/core.c:3499
io_schedule+0x1c/0x70 kernel/sched/core.c:5115
__blkdev_direct_IO_simple+0x7bd/0xf50 fs/block_dev.c:241
blkdev_direct_IO+0xccb/0x1060 fs/block_dev.c:428
generic_file_read_iter+0x4cc/0x28e0 mm/filemap.c:2343
blkdev_read_iter+0x105/0x170 fs/block_dev.c:1913
call_read_iter include/linux/fs.h:1775 [inline]
new_sync_read fs/read_write.c:401 [inline]
__vfs_read+0x6a7/0xa00 fs/read_write.c:413
vfs_read+0x11e/0x350 fs/read_write.c:447
SYSC_pread64 fs/read_write.c:611 [inline]
SyS_pread64+0x15b/0x190 fs/read_write.c:598
sys32_pread+0x39/0x50 arch/x86/ia32/sys_ia32.c:180
do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
do_fast_syscall_32+0x3ec/0xf9f arch/x86/entry/common.c:392
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f6ac99
RSP: 002b:00000000f776609c EFLAGS: 00000286 ORIG_RAX: 00000000000000b4
RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 0000000020000000
RDX: 00000000ffffffc2 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
2 locks held by khungtaskd/799:
#0: (rcu_read_lock){....}, at: [<00000000ed092784>] check_hung_uninterruptible_tasks kernel/hung_task.c:175 [inline]
#0: (rcu_read_lock){....}, at: [<00000000ed092784>] watchdog+0x1c5/0xd60 kernel/hung_task.c:249
#1: (tasklist_lock){.+.+}, at: [<00000000af5ddc85>] debug_show_all_locks+0xd3/0x3d0 kernel/locking/lockdep.c:4470
1 lock held by rsyslogd/4083:
#0: (&f->f_pos_lock){+.+.}, at: [<00000000025b5893>] __fdget_pos+0x12b/0x190 fs/file.c:765
2 locks held by getty/4205:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ec7ebc89>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000004547053e>] n_tty_read+0x2ef/0x1a00 drivers/tty/n_tty.c:2131
2 locks held by getty/4206:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ec7ebc89>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000004547053e>] n_tty_read+0x2ef/0x1a00 drivers/tty/n_tty.c:2131
2 locks held by getty/4207:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ec7ebc89>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000004547053e>] n_tty_read+0x2ef/0x1a00 drivers/tty/n_tty.c:2131
2 locks held by getty/4208:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ec7ebc89>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000004547053e>] n_tty_read+0x2ef/0x1a00 drivers/tty/n_tty.c:2131
2 locks held by getty/4209:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ec7ebc89>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000004547053e>] n_tty_read+0x2ef/0x1a00 drivers/tty/n_tty.c:2131
2 locks held by getty/4210:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ec7ebc89>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000004547053e>] n_tty_read+0x2ef/0x1a00 drivers/tty/n_tty.c:2131
2 locks held by getty/4211:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ec7ebc89>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000004547053e>] n_tty_read+0x2ef/0x1a00 drivers/tty/n_tty.c:2131
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 799 Comm: khungtaskd Not tainted 4.16.0-rc3+ #243
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x194/0x24d lib/dump_stack.c:53
nmi_cpu_backtrace+0x1d2/0x210 lib/nmi_backtrace.c:103
nmi_trigger_cpumask_backtrace+0x122/0x180 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_all_cpu_backtrace include/linux/nmi.h:138 [inline]
check_hung_task kernel/hung_task.c:132 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:190 [inline]
watchdog+0x90c/0xd60 kernel/hung_task.c:249
kthread+0x33c/0x400 kernel/kthread.c:238
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:406
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.16.0-rc3+ #243
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:tick_do_update_jiffies64 kernel/time/tick-sched.c:65 [inline]
RIP: 0010:tick_nohz_update_jiffies kernel/time/tick-sched.c:506 [inline]
RIP: 0010:tick_nohz_irq_enter kernel/time/tick-sched.c:1152 [inline]
RIP: 0010:tick_irq_enter+0x1bf/0x390 kernel/time/tick-sched.c:1169
RSP: 0018:ffff8801db207d28 EFLAGS: 00000002
RAX: dffffc0000000000 RBX: 0000000000000093 RCX: 0000000000000000
RDX: ffffffff885d6ca0 RSI: 0000000000000000 RDI: ffffffff885d6ca0
RBP: ffff8801db207d48 R08: ffff88021fff801c R09: ffff88021fff8008
R10: ffff88021fff8010 R11: ffff88021fff801d R12: 000000000001d649
R13: ffff8801db2266a0 R14: 00000039a407f389 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001c7f000 CR3: 0000000006e22001 CR4: 00000000001606f0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
irq_enter+0xb6/0xd0 kernel/softirq.c:346
scheduler_ipi+0x23d/0x820 kernel/sched/core.c:1794
smp_reschedule_interrupt+0xe6/0x650 arch/x86/kernel/smp.c:277
reschedule_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:881
</IRQ>
RIP: 0010:native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54
RSP: 0018:ffffffff86e07c38 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff02
RAX: dffffc0000000000 RBX: 1ffffffff0dc0f8a RCX: 0000000000000000
RDX: 1ffffffff0dd9308 RSI: 0000000000000001 RDI: ffffffff86ec9840
RBP: ffffffff86e07c38 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff86e07cf0 R14: ffffffff876e7220 R15: 0000000000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
default_idle+0xbf/0x430 arch/x86/kernel/process.c:354
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:345
default_idle_call+0x36/0x90 kernel/sched/idle.c:98
cpuidle_idle_call kernel/sched/idle.c:156 [inline]
do_idle+0x24a/0x3b0 kernel/sched/idle.c:246
cpu_startup_entry+0x104/0x120 kernel/sched/idle.c:351
rest_init+0xed/0xf0 init/main.c:437
start_kernel+0x7f1/0x819 init/main.c:717
x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:378
x86_64_start_kernel+0x77/0x7a arch/x86/kernel/head64.c:359
secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:239
Code: 00 fa 66 0f 1f 44 00 00 e8 2f 6b f1 ff 48 c7 c7 a0 6c 5d 88 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 48 89 fa 4c 2b 25 b1 be f8 06 <48> c1 ea 03 80 3c 02 00 0f 85 a4 01 00 00 4c 3b 25 3c bb f8 06