RBP: 00007f397b2ddca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff8517f24f R14: 00007f397b2de9c0 R15: 000000000119c034
CPU: 0 PID: 11440 Comm: syz-executor.4 Not tainted 4.14.210-syzkaller #0
======================================================
WARNING: possible circular locking dependency detected
4.14.210-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.5/11451 is trying to acquire lock:
 (console_owner){-...}, at: [<ffffffff8145a92a>] console_trylock_spinning kernel/printk/printk.c:1658 [inline]
 (console_owner){-...}, at: [<ffffffff8145a92a>] vprintk_emit+0x32a/0x620 kernel/printk/printk.c:1922

but task is already holding lock:
 (&(&port->lock)->rlock){-.-.}, at: [<ffffffff835f033b>] pty_write+0xdb/0x1d0 drivers/tty/pty.c:120

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&(&port->lock)->rlock){-.-.}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160
       tty_port_tty_get+0x1d/0x80 drivers/tty/tty_port.c:288
       tty_port_default_wakeup+0x11/0x40 drivers/tty/tty_port.c:46
       serial8250_tx_chars+0x3fe/0xbf0 drivers/tty/serial/8250/8250_port.c:1810
       serial8250_handle_irq.part.0+0x28d/0x330 drivers/tty/serial/8250/8250_port.c:1897
       serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1870 [inline]
       serial8250_default_handle_irq+0x8a/0x1f0 drivers/tty/serial/8250/8250_port.c:1913
       serial8250_interrupt+0xf3/0x210 drivers/tty/serial/8250/8250_core.c:129
       __handle_irq_event_percpu+0xee/0x7f0 kernel/irq/handle.c:147
       handle_irq_event_percpu kernel/irq/handle.c:187 [inline]
       handle_irq_event+0xf0/0x246 kernel/irq/handle.c:204
       handle_edge_irq+0x224/0xc40 kernel/irq/chip.c:770
       generic_handle_irq_desc include/linux/irqdesc.h:159 [inline]
       handle_irq+0x35/0x50 arch/x86/kernel/irq_64.c:87
       do_IRQ+0x93/0x1d0 arch/x86/kernel/irq.c:230
       ret_from_intr+0x0/0x1e
       native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60
       arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
       default_idle+0x47/0x370 arch/x86/kernel/process.c:558
       cpuidle_idle_call kernel/sched/idle.c:156 [inline]
       do_idle+0x250/0x3c0 kernel/sched/idle.c:246
       cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:351
       start_kernel+0x750/0x770 init/main.c:708
       secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240

-> #1 (&port_lock_key){-.-.}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160
       serial8250_console_write+0x7a7/0x9d0 drivers/tty/serial/8250/8250_port.c:3253
       call_console_drivers kernel/printk/printk.c:1725 [inline]
       console_unlock+0x99d/0xf20 kernel/printk/printk.c:2400
       vprintk_emit+0x224/0x620 kernel/printk/printk.c:1923
       vprintk_func+0x58/0x152 kernel/printk/printk_safe.c:401
       printk+0x9e/0xbc kernel/printk/printk.c:1996
       register_console+0x6f4/0xad0 kernel/printk/printk.c:2719
       univ8250_console_init+0x2f/0x3a drivers/tty/serial/8250/8250_core.c:691
       console_init+0x46/0x53 kernel/printk/printk.c:2800
       start_kernel+0x52e/0x770 init/main.c:634
       secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240

-> #0 (console_owner){-...}:
       lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
       console_trylock_spinning kernel/printk/printk.c:1679 [inline]
       vprintk_emit+0x367/0x620 kernel/printk/printk.c:1922
       vprintk_func+0x58/0x152 kernel/printk/printk_safe.c:401
       printk+0x9e/0xbc kernel/printk/printk.c:1996
       fail_dump lib/fault-inject.c:44 [inline]
       should_fail.cold+0xdf/0x154 lib/fault-inject.c:149
       should_failslab+0xd6/0x130 mm/failslab.c:32
       slab_pre_alloc_hook mm/slab.h:421 [inline]
       slab_alloc mm/slab.c:3376 [inline]
       __do_kmalloc mm/slab.c:3718 [inline]
       __kmalloc+0x6d/0x400 mm/slab.c:3729
       kmalloc include/linux/slab.h:493 [inline]
       tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
       __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
       tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
       tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
       pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
       n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
       n_hdlc_tty_wakeup+0x95/0xb0 drivers/tty/n_hdlc.c:480
       tty_ldisc_hangup+0x3ba/0x6c0 drivers/tty/tty_ldisc.c:743
       __tty_hangup.part.0+0x31a/0x730 drivers/tty/tty_io.c:622
       __tty_hangup drivers/tty/tty_io.c:2600 [inline]
       tty_vhangup drivers/tty/tty_io.c:695 [inline]
       tty_ioctl+0x730/0x13c0 drivers/tty/tty_io.c:2599
       vfs_ioctl fs/ioctl.c:46 [inline]
       file_ioctl fs/ioctl.c:500 [inline]
       do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
       SYSC_ioctl fs/ioctl.c:701 [inline]
       SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
       do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
       entry_SYSCALL_64_after_hwframe+0x46/0xbb

other info that might help us debug this:

Chain exists of:
  console_owner --> &port_lock_key --> &(&port->lock)->rlock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&(&port->lock)->rlock);
                               lock(&port_lock_key);
                               lock(&(&port->lock)->rlock);
  lock(console_owner);

 *** DEADLOCK ***

3 locks held by syz-executor.5/11451:
 #0:  (&tty->legacy_mutex){+.+.}, at: [<ffffffff835ea84f>] tty_lock+0x5f/0x70 drivers/tty/tty_mutex.c:19
 #1:  (&tty->ldisc_sem){++++}, at: [<ffffffff835e57ec>] tty_ldisc_ref drivers/tty/tty_ldisc.c:305 [inline]
 #1:  (&tty->ldisc_sem){++++}, at: [<ffffffff835e57ec>] tty_ldisc_hangup+0x2c/0x6c0 drivers/tty/tty_ldisc.c:736
 #2:  (&(&port->lock)->rlock){-.-.}, at: [<ffffffff835f033b>] pty_write+0xdb/0x1d0 drivers/tty/pty.c:120

stack backtrace:
CPU: 1 PID: 11451 Comm: syz-executor.5 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258
 check_prev_add kernel/locking/lockdep.c:1905 [inline]
 check_prevs_add kernel/locking/lockdep.c:2022 [inline]
 validate_chain kernel/locking/lockdep.c:2464 [inline]
 __lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491
 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
 console_trylock_spinning kernel/printk/printk.c:1679 [inline]
 vprintk_emit+0x367/0x620 kernel/printk/printk.c:1922
 vprintk_func+0x58/0x152 kernel/printk/printk_safe.c:401
 printk+0x9e/0xbc kernel/printk/printk.c:1996
 fail_dump lib/fault-inject.c:44 [inline]
 should_fail.cold+0xdf/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_wakeup+0x95/0xb0 drivers/tty/n_hdlc.c:480
 tty_ldisc_hangup+0x3ba/0x6c0 drivers/tty/tty_ldisc.c:743
 __tty_hangup.part.0+0x31a/0x730 drivers/tty/tty_io.c:622
 __tty_hangup drivers/tty/tty_io.c:2600 [inline]
 tty_vhangup drivers/tty/tty_io.c:695 [inline]
 tty_ioctl+0x730/0x13c0 drivers/tty/tty_io.c:2599
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f397b2ddc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000045e0f9
RDX: 0000000000000000 RSI: 0000000000005437 RDI: 0000000000000003
RBP: 00007f397b2ddca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff8517f24f R14: 00007f397b2de9c0 R15: 000000000119c034
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 kmem_cache_alloc+0x28e/0x3c0 mm/slab.c:3550
 ptlock_alloc+0x1d/0x70 mm/memory.c:4834
 ptlock_init include/linux/mm.h:1764 [inline]
 pgtable_page_ctor include/linux/mm.h:1798 [inline]
 pte_alloc_one+0x57/0x100 arch/x86/mm/pgtable.c:33
 do_huge_pmd_anonymous_page+0x500/0x1700 mm/huge_memory.c:692
 create_huge_pmd mm/memory.c:3974 [inline]
 __handle_mm_fault+0x2ac4/0x4620 mm/memory.c:4177
 handle_mm_fault+0x306/0x7a0 mm/memory.c:4243
 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442
 page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181
RSP: 0018:ffff888054f1fc58 EFLAGS: 00010206
RAX: ffffed1009702158 RBX: 0000000000010000 RCX: 0000000000010000
RDX: 0000000000010000 RSI: 0000000020c34fff RDI: ffff88804b800ac0
RBP: 0000000020c34fff R08: 0000000000000001 R09: ffffed1009702157
R10: ffff88804b810abf R11: 0000000000000000 R12: 00007ffffffff000
R13: ffff88804b800ac0 R14: 0000000020c44fff R15: 0000000020c34fff
 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
 raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
 _copy_from_user+0xbe/0x100 lib/usercopy.c:13
 copy_from_user include/linux/uaccess.h:147 [inline]
 do_tty_write drivers/tty/tty_io.c:957 [inline]
 tty_write+0x3cf/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f8be86c5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f8be86c5ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fffbefe4d2f R14: 00007f8be86c69c0 R15: 000000000119bf8c
CPU: 1 PID: 11467 Comm: syz-executor.3 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:2898 [inline]
 prepare_alloc_pages mm/page_alloc.c:4131 [inline]
 __alloc_pages_nodemask+0x22c/0x2720 mm/page_alloc.c:4179
 alloc_pages_current+0x155/0x260 mm/mempolicy.c:2113
 alloc_pages include/linux/gfp.h:520 [inline]
 pte_alloc_one+0x15/0x100 arch/x86/mm/pgtable.c:30
 do_huge_pmd_anonymous_page+0x500/0x1700 mm/huge_memory.c:692
 create_huge_pmd mm/memory.c:3974 [inline]
 __handle_mm_fault+0x2ac4/0x4620 mm/memory.c:4177
 handle_mm_fault+0x306/0x7a0 mm/memory.c:4243
 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442
 page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181
RSP: 0018:ffff888048eefc58 EFLAGS: 00010206
RAX: ffffed100abf21c0 RBX: 0000000000010000 RCX: 0000000000010000
RDX: 0000000000010000 RSI: 0000000020c34fff RDI: ffff888055f80e00
RBP: 0000000020c34fff R08: 0000000000000001 R09: ffffed100abf21bf
R10: ffff888055f90dff R11: 0000000000000000 R12: 00007ffffffff000
R13: ffff888055f80e00 R14: 0000000020c44fff R15: 0000000020c34fff
 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
 raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
 _copy_from_user+0xbe/0x100 lib/usercopy.c:13
 copy_from_user include/linux/uaccess.h:147 [inline]
 do_tty_write drivers/tty/tty_io.c:957 [inline]
 tty_write+0x3cf/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f852243ec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f852243eca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd8b53814f R14: 00007f852243f9c0 R15: 000000000119bf8c
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 11483 Comm: syz-executor.5 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_wakeup+0x95/0xb0 drivers/tty/n_hdlc.c:480
 tty_ldisc_hangup+0x3ba/0x6c0 drivers/tty/tty_ldisc.c:743
 __tty_hangup.part.0+0x31a/0x730 drivers/tty/tty_io.c:622
 __tty_hangup drivers/tty/tty_io.c:2600 [inline]
 tty_vhangup drivers/tty/tty_io.c:695 [inline]
 tty_ioctl+0x730/0x13c0 drivers/tty/tty_io.c:2599
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f397b2ddc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000045e0f9
RDX: 0000000000000000 RSI: 0000000000005437 RDI: 0000000000000003
RBP: 00007f397b2ddca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff8517f24f R14: 00007f397b2de9c0 R15: 000000000119c034
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 11500 Comm: syz-executor.4 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
SQUASHFS error: squashfs_read_data failed to read block 0x0
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
squashfs: SQUASHFS error: unable to read xattr id index table
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f8be86c5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f8be86c5ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00007fffbefe4d2f R14: 00007f8be86c69c0 R15: 000000000119bf8c
CPU: 1 PID: 11503 Comm: syz-executor.3 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 kmem_cache_alloc+0x28e/0x3c0 mm/slab.c:3550
 ptlock_alloc+0x1d/0x70 mm/memory.c:4834
 ptlock_init include/linux/mm.h:1764 [inline]
 pgtable_page_ctor include/linux/mm.h:1798 [inline]
 pte_alloc_one+0x57/0x100 arch/x86/mm/pgtable.c:33
 do_huge_pmd_anonymous_page+0x500/0x1700 mm/huge_memory.c:692
 create_huge_pmd mm/memory.c:3974 [inline]
 __handle_mm_fault+0x2ac4/0x4620 mm/memory.c:4177
 handle_mm_fault+0x306/0x7a0 mm/memory.c:4243
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442
 page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1123
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181
RSP: 0018:ffff888047e57c58 EFLAGS: 00010206
RAX: ffffed1009cde148 RBX: 0000000000010000 RCX: 0000000000010000
RDX: 0000000000010000 RSI: 0000000020c34fff RDI: ffff88804e6e0a40
RBP: 0000000020c34fff R08: 0000000000000001 R09: ffffed1009cde147
R10: ffff88804e6f0a3f R11: 0000000000000000 R12: 00007ffffffff000
R13: ffff88804e6e0a40 R14: 0000000020c44fff R15: 0000000020c34fff
 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
 raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
 _copy_from_user+0xbe/0x100 lib/usercopy.c:13
 copy_from_user include/linux/uaccess.h:147 [inline]
 do_tty_write drivers/tty/tty_io.c:957 [inline]
 tty_write+0x3cf/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f852243ec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f852243eca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd8b53814f R14: 00007f852243f9c0 R15: 000000000119bf8c
CPU: 0 PID: 11517 Comm: syz-executor.5 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_wakeup+0x95/0xb0 drivers/tty/n_hdlc.c:480
 tty_ldisc_hangup+0x3ba/0x6c0 drivers/tty/tty_ldisc.c:743
 __tty_hangup.part.0+0x31a/0x730 drivers/tty/tty_io.c:622
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 __tty_hangup drivers/tty/tty_io.c:2600 [inline]
 tty_vhangup drivers/tty/tty_io.c:695 [inline]
 tty_ioctl+0x730/0x13c0 drivers/tty/tty_io.c:2599
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f397b2bcc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 0000000000000000 RSI: 0000000000005437 RDI: 0000000000000003
RBP: 00007f397b2bcca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fff8517f24f R14: 00007f397b2bd9c0 R15: 000000000119c0dc
CPU: 1 PID: 11525 Comm: syz-executor.3 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f852243ec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f852243eca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00007ffd8b53814f R14: 00007f852243f9c0 R15: 000000000119bf8c
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
SQUASHFS error: squashfs_read_data failed to read block 0x0
CPU: 0 PID: 11540 Comm: syz-executor.4 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:2898 [inline]
 prepare_alloc_pages mm/page_alloc.c:4131 [inline]
 __alloc_pages_nodemask+0x22c/0x2720 mm/page_alloc.c:4179
squashfs: SQUASHFS error: unable to read xattr id index table
 __alloc_pages include/linux/gfp.h:484 [inline]
 __alloc_pages_node include/linux/gfp.h:497 [inline]
 kmem_getpages mm/slab.c:1419 [inline]
 cache_grow_begin+0x8f/0x420 mm/slab.c:2676
 cache_alloc_refill+0x273/0x350 mm/slab.c:3043
 ____cache_alloc mm/slab.c:3125 [inline]
 __do_cache_alloc mm/slab.c:3347 [inline]
 slab_alloc mm/slab.c:3382 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x378/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f8be86c5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f8be86c5ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007fffbefe4d2f R14: 00007f8be86c69c0 R15: 000000000119bf8c
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 11551 Comm: syz-executor.3 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f852243ec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f852243eca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007ffd8b53814f R14: 00007f852243f9c0 R15: 000000000119bf8c
squashfs: SQUASHFS error: unable to read xattr id index table
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 11584 Comm: syz-executor.4 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f8be86c5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f8be86c5ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 00007fffbefe4d2f R14: 00007f8be86c69c0 R15: 000000000119bf8c
CPU: 0 PID: 11588 Comm: syz-executor.3 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f852243ec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f852243eca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 00007ffd8b53814f R14: 00007f852243f9c0 R15: 000000000119bf8c
SQUASHFS error: squashfs_read_data failed to read block 0x0
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 11604 Comm: syz-executor.3 Not tainted 4.14.210-syzkaller #0
squashfs: SQUASHFS error: unable to read xattr id index table
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f852243ec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f852243eca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006
R13: 00007ffd8b53814f R14: 00007f852243f9c0 R15: 000000000119bf8c
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 11617 Comm: syz-executor.4 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
SQUASHFS error: squashfs_read_data failed to read block 0x0
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
squashfs: SQUASHFS error: unable to read xattr id index table
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f8be86c5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f8be86c5ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006
R13: 00007fffbefe4d2f R14: 00007f8be86c69c0 R15: 000000000119bf8c
SQUASHFS error: squashfs_read_data failed to read block 0x0
squashfs: SQUASHFS error: unable to read xattr id index table
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 11666 Comm: syz-executor.3 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f852243ec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f852243eca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000007
R13: 00007ffd8b53814f R14: 00007f852243f9c0 R15: 000000000119bf8c
CPU: 1 PID: 11668 Comm: syz-executor.4 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f8be86c5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f8be86c5ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000007
R13: 00007fffbefe4d2f R14: 00007f8be86c69c0 R15: 000000000119bf8c
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 11685 Comm: syz-executor.3 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f852243ec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f852243eca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
R13: 00007ffd8b53814f R14: 00007f852243f9c0 R15: 000000000119bf8c
SQUASHFS error: squashfs_read_data failed to read block 0x0
squashfs: SQUASHFS error: unable to read xattr id index table
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 11707 Comm: syz-executor.4 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f8be86c5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f8be86c5ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
R13: 00007fffbefe4d2f R14: 00007f8be86c69c0 R15: 000000000119bf8c
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 11724 Comm: syz-executor.3 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
SQUASHFS error: squashfs_read_data failed to read block 0x0
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
squashfs: SQUASHFS error: unable to read xattr id index table
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f852243ec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f852243eca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009
R13: 00007ffd8b53814f R14: 00007f852243f9c0 R15: 000000000119bf8c
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 11745 Comm: syz-executor.4 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f8be86c5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f8be86c5ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009
R13: 00007fffbefe4d2f R14: 00007f8be86c69c0 R15: 000000000119bf8c
SQUASHFS error: squashfs_read_data failed to read block 0x0
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 11775 Comm: syz-executor.3 Not tainted 4.14.210-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
squashfs: SQUASHFS error: unable to read xattr id index table
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f852243ec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f852243eca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000a
R13: 00007ffd8b53814f R14: 00007f852243f9c0 R15: 000000000119bf8c
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 11773 Comm: syz-executor.4 Not tainted 4.14.210-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x6d/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169
 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:267
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:312
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x10d/0x1d0 drivers/tty/pty.c:122
 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404
 n_hdlc_tty_write+0x4b3/0x590 drivers/tty/n_hdlc.c:714
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e0f9
RSP: 002b:00007f8be86c5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e0f9
RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003
RBP: 00007f8be86c5ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000a
R13: 00007fffbefe4d2f R14: 00007f8be86c69c0 R15: 000000000119bf8c
print_req_error: I/O error, dev loop1, sector 0
caif:caif_disconnect_client(): nothing to disconnect
caif:caif_disconnect_client(): nothing to disconnect
print_req_error: I/O error, dev loop1, sector 0
print_req_error: I/O error, dev loop1, sector 0