hfsplus: unable to parse mount options hfsplus: unable to parse mount options INFO: task syz-executor5:21314 blocked for more than 140 seconds. Not tainted 4.18.0-rc8-next-20180810+ #36 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D24024 21314 4446 0x00000004 Call Trace: context_switch kernel/sched/core.c:2823 [inline] __schedule+0x87c/0x1ec0 kernel/sched/core.c:3471 schedule+0xfb/0x450 kernel/sched/core.c:3515 __rwsem_down_write_failed_common+0x98b/0x1650 kernel/locking/rwsem-xadd.c:566 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0xaa/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:765 [inline] chown_common+0x3a9/0x730 fs/open.c:629 do_fchownat+0x16e/0x250 fs/open.c:662 __do_sys_chown fs/open.c:682 [inline] __se_sys_chown fs/open.c:680 [inline] __x64_sys_chown+0x7b/0xc0 fs/open.c:680 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457089 Code: 08 e8 3b a9 fb ff 48 8b 44 24 20 48 8b 4c 24 18 48 8b 54 24 38 48 8b 7c 24 48 eb 8d 48 8b 6c 24 50 48 83 c4 58 c3 48 89 04 24 <48> 89 5c 24 08 e8 0d a9 fb ff 48 8b 44 24 40 48 8b 4c 24 48 48 8b RSP: 002b:00007f85a4721c78 EFLAGS: 00000246 ORIG_RAX: 000000000000005c RAX: ffffffffffffffda RBX: 00007f85a47226d4 RCX: 0000000000457089 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200004c0 RBP: 00000000009301e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cb140 R14: 00000000004c773c R15: 0000000000000002 Showing all locks held in the system: 1 lock held by khungtaskd/774: #0: 000000003672bcdf (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x428 kernel/locking/lockdep.c:4461 2 locks held by rs:main Q:Reg/4295: 1 lock held by rsyslogd/4297: #0: 00000000249c6693 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 2 locks held by getty/4389: #0: 000000000050fbd4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000c52fb86c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4390: #0: 00000000fa5c7e6f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 0000000077e2175d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4391: #0: 00000000e1572dc1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000003da457f0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4392: #0: 00000000aecaa370 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000380c7436 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4393: #0: 00000000ad7f15a5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000002ed0734f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4394: #0: 000000001ed753ca (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000007600dc3a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4395: #0: 00000000e31e3d05 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000aa77323b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by syz-executor5/21270: #0: 000000003bd5eccf (sb_writers#12){.+.+}, at: sb_start_write include/linux/fs.h:1598 [inline] #0: 000000003bd5eccf (sb_writers#12){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 00000000faf05e40 (&sb->s_type->i_mutex_key#17){++++}, at: inode_lock include/linux/fs.h:765 [inline] #1: 00000000faf05e40 (&sb->s_type->i_mutex_key#17){++++}, at: chown_common+0x3a9/0x730 fs/open.c:629 2 locks held by syz-executor5/21314: #0: 000000003bd5eccf (sb_writers#12){.+.+}, at: sb_start_write include/linux/fs.h:1598 [inline] #0: 000000003bd5eccf (sb_writers#12){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 00000000faf05e40 (&sb->s_type->i_mutex_key#17){++++}, at: inode_lock include/linux/fs.h:765 [inline] #1: 00000000faf05e40 (&sb->s_type->i_mutex_key#17){++++}, at: chown_common+0x3a9/0x730 fs/open.c:629 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 774 Comm: khungtaskd Not tainted 4.18.0-rc8-next-20180810+ #36 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+0x1c9/0x2b4 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.3+0x48/0x88 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x151/0x192 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:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline] watchdog+0xb39/0x10b0 kernel/hung_task.c:265 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4295 Comm: rs:main Q:Reg Not tainted 4.18.0-rc8-next-20180810+ #36 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0033:0x4390ec Code: c0 0f 85 19 05 00 00 4c 63 f5 41 89 ed 49 c1 e6 06 4d 89 f7 41 89 ee 0f 1f 80 00 00 00 00 4c 8b 4b 28 4d 01 f9 41 80 79 0c 00 <0f> 84 06 02 00 00 41 83 79 08 04 0f 84 fb 01 00 00 49 8b 09 48 8b RSP: 002b:00007f41d7d63510 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000001ecea38 RCX: 302038312079614d RDX: 000000000000000e RSI: 0000000001ed3fa8 RDI: 0000000000000002 RBP: 0000000000000000 R08: 0000000001ed3b6c R09: 0000000001ef2fc0 R10: 00000000fffff7b7 R11: 000000000065e478 R12: 000000000000001b R13: 0000000000000000 R14: 000000000000000e R15: 0000000000000380 FS: 00007f41d7d64700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001aec18000 CR4: 00000000001406f0