INFO: task syz-executor118:9139 can't die for more than 143 seconds.
syz-executor118 D28560 9139 9135 0x00004004
Call Trace:
context_switch kernel/sched/core.c:3252 [inline]
__schedule+0x755/0x1580 kernel/sched/core.c:3878
schedule+0xa8/0x270 kernel/sched/core.c:3942
schedule_timeout+0x717/0xc50 kernel/time/timer.c:1783
io_schedule_timeout+0x26/0x80 kernel/sched/core.c:5586
do_wait_for_common kernel/sched/completion.c:83 [inline]
__wait_for_common kernel/sched/completion.c:104 [inline]
wait_for_common_io kernel/sched/completion.c:121 [inline]
wait_for_completion_io+0x29c/0x440 kernel/sched/completion.c:169
submit_bio_wait+0x11d/0x1c0 block/bio.c:987
blkdev_issue_flush+0x20d/0x300 block/blk-flush.c:449
blkdev_fsync+0x95/0xd0 fs/block_dev.c:674
vfs_fsync_range+0x141/0x230 fs/sync.c:197
vfs_fsync fs/sync.c:211 [inline]
do_fsync+0x54/0xa0 fs/sync.c:221
__do_sys_fdatasync fs/sync.c:234 [inline]
__se_sys_fdatasync fs/sync.c:232 [inline]
__x64_sys_fdatasync+0x36/0x50 fs/sync.c:232
do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x449749
Code: Bad RIP value.
RSP: 002b:00007f6f9a5fdce8 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 0000000000449749
RDX: 0000000000449749 RSI: 0000000000000000 RDI: 0000000000000009
RBP: 00000000006dac50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
R13: 00007fff3730e03f R14: 00007f6f9a5fe9c0 R15: 20c49ba5e353f7cf
INFO: task syz-executor118:9139 blocked for more than 143 seconds.
Not tainted 5.2.0-rc7-next-20190703 #28
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor118 D28560 9139 9135 0x00004004
Call Trace:
context_switch kernel/sched/core.c:3252 [inline]
__schedule+0x755/0x1580 kernel/sched/core.c:3878
schedule+0xa8/0x270 kernel/sched/core.c:3942
schedule_timeout+0x717/0xc50 kernel/time/timer.c:1783
io_schedule_timeout+0x26/0x80 kernel/sched/core.c:5586
do_wait_for_common kernel/sched/completion.c:83 [inline]
__wait_for_common kernel/sched/completion.c:104 [inline]
wait_for_common_io kernel/sched/completion.c:121 [inline]
wait_for_completion_io+0x29c/0x440 kernel/sched/completion.c:169
submit_bio_wait+0x11d/0x1c0 block/bio.c:987
blkdev_issue_flush+0x20d/0x300 block/blk-flush.c:449
blkdev_fsync+0x95/0xd0 fs/block_dev.c:674
vfs_fsync_range+0x141/0x230 fs/sync.c:197
vfs_fsync fs/sync.c:211 [inline]
do_fsync+0x54/0xa0 fs/sync.c:221
__do_sys_fdatasync fs/sync.c:234 [inline]
__se_sys_fdatasync fs/sync.c:232 [inline]
__x64_sys_fdatasync+0x36/0x50 fs/sync.c:232
do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x449749
Code: Bad RIP value.
RSP: 002b:00007f6f9a5fdce8 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 0000000000449749
RDX: 0000000000449749 RSI: 0000000000000000 RDI: 0000000000000009
RBP: 00000000006dac50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
R13: 00007fff3730e03f R14: 00007f6f9a5fe9c0 R15: 20c49ba5e353f7cf
Showing all locks held in the system:
1 lock held by khungtaskd/1046:
#0: 0000000056802d62 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5257
2 locks held by rsyslogd/9024:
#0: 0000000068810859 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801
#1: 000000001b1f2e57 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1207 [inline]
#1: 000000001b1f2e57 (&rq->lock){-.-.}, at: __schedule+0x1f5/0x1580 kernel/sched/core.c:3830
2 locks held by getty/9114:
#0: 00000000c16cc5ad (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000008a4a997b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/9115:
#0: 000000001717282d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000005bbabfdc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/9116:
#0: 000000001d8865fb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000d345e5b6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/9117:
#0: 00000000d7d8bdea (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 0000000038e05360 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/9118:
#0: 00000000fa728e64 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000f0e497da (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/9119:
#0: 000000004c95d8db (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000000a2f5a50 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
2 locks held by getty/9120:
#0: 0000000057bd91cb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000bacf138e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1046 Comm: khungtaskd Not tainted 5.2.0-rc7-next-20190703 #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x23b/0x28b 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:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:249 [inline]
watchdog+0xc54/0x1320 kernel/hung_task.c:333
kthread+0x361/0x430 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:353
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.2.0-rc7-next-20190703 #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__local_bh_enable+0x0/0x130 kernel/softirq.c:144
Code: e8 35 4a 35 00 5d c3 0f 1f 00 55 89 c9 89 f6 48 89 e5 e8 23 4e 35 00 5d c3 90 55 89 f6 48 89 e5 e8 25 46 35 00 5d c3 0f 1f 00 <48> c7 c0 74 a6 a3 89 55 48 ba 00 00 00 00 00 fc ff df 48 89 c1 48
RSP: 0018:ffff8880ae809f60 EFLAGS: 00000046
RAX: 0000000080000201 RBX: ffffffff88c7a240 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81664bdc RDI: 0000000000000200
RBP: ffff8880ae809f68 R08: ffffffff88c7a240 R09: ffffed1015d06bfc
R10: ffffed1015d06bfb R11: ffff8880ae835fdb R12: ffffffff88c7a240
R13: ffffffff889a6100 R14: ffff8880ae800000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 000000009fb18000 CR4: 00000000001506f0
Call Trace:
irq_enter+0xc2/0xe0 kernel/softirq.c:355
scheduler_ipi+0x28e/0x640 kernel/sched/core.c:2218
smp_reschedule_interrupt+0x78/0x4c0 arch/x86/kernel/smp.c:276
reschedule_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:831
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: 08 a6 78 fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 54 4e 54 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 44 4e 54 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 ce 54 2c fa e8 59
RSP: 0018:ffffffff88c07ce8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff02
RAX: 1ffffffff11a5cbd RBX: ffffffff88c7a240 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffffffff88c7aad4
RBP: ffffffff88c07d18 R08: ffffffff88c7a240 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffffff89a37478 R14: 0000000000000000 R15: 0000000000000000
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:571
default_idle_call+0x84/0xb0 kernel/sched/idle.c:94
cpuidle_idle_call kernel/sched/idle.c:154 [inline]
do_idle+0x413/0x760 kernel/sched/idle.c:263
cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:354
rest_init+0x245/0x37b init/main.c:451
arch_call_rest_init+0xe/0x1b
start_kernel+0x8de/0x91d init/main.c:785
x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:472
x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:453
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243