R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
ttyprintk ttyprintk: tty_port_close_start: tty->count = 1 port count = 3
======================================================
WARNING: possible circular locking dependency detected
4.14.218-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.1/18605 is trying to acquire lock:
 (console_owner){-...}, at: [<ffffffff8143ed0a>] console_trylock_spinning kernel/printk/printk.c:1658 [inline]
 (console_owner){-...}, at: [<ffffffff8143ed0a>] vprintk_emit+0x32a/0x620 kernel/printk/printk.c:1922

but task is already holding lock:
 (&(&port->lock)->rlock){-.-.}, at: [<ffffffff835397e8>] tty_port_close_start.part.0+0x28/0x4c0 drivers/tty/tty_port.c:573

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+0xf0/0x250 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_secondary+0x4db/0x670 arch/x86/kernel/smpboot.c:272
       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+0x58/0x160 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+0x58/0x160 kernel/printk/printk_safe.c:401
       printk+0x9e/0xbc kernel/printk/printk.c:1996
       tty_port_close_start.part.0+0x46c/0x4c0 drivers/tty/tty_port.c:575
       tty_port_close_start drivers/tty/tty_port.c:647 [inline]
       tty_port_close+0x3b/0x130 drivers/tty/tty_port.c:640
       tty_release+0x40b/0x10d0 drivers/tty/tty_io.c:1670
       __fput+0x25f/0x7a0 fs/file_table.c:210
       task_work_run+0x11f/0x190 kernel/task_work.c:113
       tracehook_notify_resume include/linux/tracehook.h:191 [inline]
       exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
       prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
       syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
       do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
       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 ***

2 locks held by syz-executor.1/18605:
 #0:  (&tty->legacy_mutex){+.+.}, at: [<ffffffff8353af5f>] tty_lock+0x5f/0x70 drivers/tty/tty_mutex.c:19
 #1:  (&(&port->lock)->rlock){-.-.}, at: [<ffffffff835397e8>] tty_port_close_start.part.0+0x28/0x4c0 drivers/tty/tty_port.c:573

stack backtrace:
CPU: 1 PID: 18605 Comm: syz-executor.1 Not tainted 4.14.218-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+0x1b2/0x281 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+0x58/0x160 kernel/printk/printk_safe.c:401
 printk+0x9e/0xbc kernel/printk/printk.c:1996
 tty_port_close_start.part.0+0x46c/0x4c0 drivers/tty/tty_port.c:575
 tty_port_close_start drivers/tty/tty_port.c:647 [inline]
 tty_port_close+0x3b/0x130 drivers/tty/tty_port.c:640
 tty_release+0x40b/0x10d0 drivers/tty/tty_io.c:1670
 __fput+0x25f/0x7a0 fs/file_table.c:210
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x418e1b
RSP: 002b:00007ffd523ab350 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000418e1b
RDX: 0000000000000000 RSI: 0000001b30d2435c RDI: 0000000000000006
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b30d24364
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000056c9e0
R13: 000000000002f4c2 R14: 000000000056c9e0 R15: 000000000056c0b0
VIVID-TX
vivid-001: RDS Radio Text: This is a VIVID default Radio Text template text, change at will
vivid-001: RDS Stereo: true
vivid-001: RDS Artificial Head: false
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
vivid-001: RDS Compressed: false
CPU: 0 PID: 18724 Comm: syz-executor.5 Not tainted 4.14.218-syzkaller #0
vivid-001: RDS Dynamic PTY: 
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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 lib/fault-inject.c:149
false
 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+0x2c1/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 slhc_init drivers/net/slip/slhc.c:107 [inline]
 slhc_init+0xb7/0x550 drivers/net/slip/slhc.c:92
 sl_alloc_bufs drivers/net/slip/slip.c:166 [inline]
 slip_open+0x9c9/0x1130 drivers/net/slip/slip.c:833
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
vivid-001: RDS Traffic Announcement: 
false
 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
vivid-001: RDS Traffic Program: 
RIP: 0033:0x465b09
true
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 18728 Comm: syz-executor.0 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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_trace+0x29a/0x3d0 mm/slab.c:3616
 kmalloc include/linux/slab.h:488 [inline]
 sl_alloc_bufs drivers/net/slip/slip.c:156 [inline]
 slip_open+0x920/0x1130 drivers/net/slip/slip.c:833
vivid-001: RDS Music: 
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
true
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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
vivid-001: ==================  END STATUS  ==================
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x465b09
RSP: 002b:00007fb531ba9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007fb531ba91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 18754 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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+0x2c1/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 slhc_init drivers/net/slip/slhc.c:115 [inline]
 slhc_init+0x217/0x550 drivers/net/slip/slhc.c:92
 sl_alloc_bufs drivers/net/slip/slip.c:166 [inline]
 slip_open+0x9c9/0x1130 drivers/net/slip/slip.c:833
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 18781 Comm: syz-executor.0 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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_trace+0x29a/0x3d0 mm/slab.c:3616
 kmalloc include/linux/slab.h:488 [inline]
 sl_alloc_bufs drivers/net/slip/slip.c:159 [inline]
 slip_open+0x964/0x1130 drivers/net/slip/slip.c:833
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007fb531ba9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007fb531ba91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 18806 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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_track_caller+0x2bc/0x400 mm/slab.c:3735
 kstrdup+0x36/0x70 mm/util.c:56
 kstrdup_const+0x35/0x60 mm/util.c:77
 kvasprintf_const+0xf1/0x180 lib/kasprintf.c:48
 kobject_set_name_vargs+0x56/0x150 lib/kobject.c:263
 dev_set_name+0xa4/0xc0 drivers/base/core.c:1727
 netdev_register_kobject+0xbd/0x410 net/core/net-sysfs.c:1608
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 18808 Comm: syz-executor.0 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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+0x40/0x3c0 mm/slab.c:3550
 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 fill_pool lib/debugobjects.c:110 [inline]
 __debug_object_init+0x578/0x7a0 lib/debugobjects.c:341
 debug_timer_init kernel/time/timer.c:688 [inline]
 debug_init kernel/time/timer.c:737 [inline]
 init_timer_key+0x2f/0x300 kernel/time/timer.c:781
 sl_alloc drivers/net/slip/slip.c:776 [inline]
 slip_open+0x580/0x1130 drivers/net/slip/slip.c:823
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007fb531ba9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007fb531ba91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
print_req_error: I/O error, dev loop3, sector 0
CPU: 0 PID: 18843 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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_track_caller+0x2bc/0x400 mm/slab.c:3735
 kstrdup+0x36/0x70 mm/util.c:56
 kstrdup_const+0x35/0x60 mm/util.c:77
 kvasprintf_const+0xf1/0x180 lib/kasprintf.c:48
 kobject_set_name_vargs+0x56/0x150 lib/kobject.c:263
print_req_error: I/O error, dev loop3, sector 24
 dev_set_name+0xa4/0xc0 drivers/base/core.c:1727
 netdev_register_kobject+0xbd/0x410 net/core/net-sysfs.c:1608
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 18898 Comm: syz-executor.0 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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_trace+0x29a/0x3d0 mm/slab.c:3616
 kmalloc include/linux/slab.h:488 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 slhc_init drivers/net/slip/slhc.c:101 [inline]
 slhc_init+0x84/0x550 drivers/net/slip/slhc.c:92
 sl_alloc_bufs drivers/net/slip/slip.c:166 [inline]
 slip_open+0x9c9/0x1130 drivers/net/slip/slip.c:833
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007fb531ba9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007fb531ba91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 18899 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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_track_caller+0x2bc/0x400 mm/slab.c:3735
 kstrdup+0x36/0x70 mm/util.c:56
 kstrdup_const+0x35/0x60 mm/util.c:77
 __kernfs_new_node+0x2e/0x470 fs/kernfs/dir.c:628
 kernfs_new_node fs/kernfs/dir.c:677 [inline]
 kernfs_create_dir_ns+0x8c/0x200 fs/kernfs/dir.c:998
 sysfs_create_dir_ns+0xb7/0x1d0 fs/sysfs/dir.c:55
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal+0x28b/0x930 lib/kobject.c:229
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_add+0x11f/0x180 lib/kobject.c:409
 device_add+0x33f/0x15c0 drivers/base/core.c:1869
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
kobject_add_internal failed for sl1 (error: -12 parent: net)
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 18962 Comm: syz-executor.0 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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+0x2c1/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 slhc_init drivers/net/slip/slhc.c:107 [inline]
 slhc_init+0xb7/0x550 drivers/net/slip/slhc.c:92
 sl_alloc_bufs drivers/net/slip/slip.c:166 [inline]
 slip_open+0x9c9/0x1130 drivers/net/slip/slip.c:833
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007fb531ba9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007fb531ba91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19006 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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_track_caller+0x2bc/0x400 mm/slab.c:3735
 kstrdup+0x36/0x70 mm/util.c:56
 kstrdup_const+0x35/0x60 mm/util.c:77
 __kernfs_new_node+0x2e/0x470 fs/kernfs/dir.c:628
 kernfs_new_node fs/kernfs/dir.c:677 [inline]
 kernfs_create_dir_ns+0x8c/0x200 fs/kernfs/dir.c:998
 sysfs_create_dir_ns+0xb7/0x1d0 fs/sysfs/dir.c:55
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal+0x28b/0x930 lib/kobject.c:229
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_add+0x11f/0x180 lib/kobject.c:409
 device_add+0x33f/0x15c0 drivers/base/core.c:1869
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
kobject_add_internal failed for sl1 (error: -12 parent: net)
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19011 Comm: syz-executor.0 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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+0x2c1/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 slhc_init drivers/net/slip/slhc.c:115 [inline]
 slhc_init+0x217/0x550 drivers/net/slip/slhc.c:92
 sl_alloc_bufs drivers/net/slip/slip.c:166 [inline]
 slip_open+0x9c9/0x1130 drivers/net/slip/slip.c:833
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007fb531ba9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007fb531ba91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 19107 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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+0x40/0x3c0 mm/slab.c:3550
 radix_tree_node_alloc.constprop.0+0x1b0/0x2f0 lib/radix-tree.c:397
 idr_get_free_cmn+0x595/0x8d0 lib/radix-tree.c:2170
 idr_get_free include/linux/radix-tree.h:369 [inline]
 idr_alloc_cmn+0xe8/0x1e0 lib/idr.c:24
 idr_alloc include/linux/idr.h:116 [inline]
 idr_alloc_cyclic+0xc2/0x1d0 lib/idr.c:56
 __kernfs_new_node+0xaf/0x470 fs/kernfs/dir.c:638
 kernfs_new_node fs/kernfs/dir.c:677 [inline]
 kernfs_create_dir_ns+0x8c/0x200 fs/kernfs/dir.c:998
 sysfs_create_dir_ns+0xb7/0x1d0 fs/sysfs/dir.c:55
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal+0x28b/0x930 lib/kobject.c:229
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_add+0x11f/0x180 lib/kobject.c:409
 device_add+0x33f/0x15c0 drivers/base/core.c:1869
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19109 Comm: syz-executor.0 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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+0x2c1/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 slhc_init drivers/net/slip/slhc.c:107 [inline]
 slhc_init+0xb7/0x550 drivers/net/slip/slhc.c:92
 sl_alloc_bufs drivers/net/slip/slip.c:166 [inline]
 slip_open+0x9c9/0x1130 drivers/net/slip/slip.c:833
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007fb531ba9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007fb531ba91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
arp_tables: arptables: counters copy to user failed while replacing table
CPU: 0 PID: 19221 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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
 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632
 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677
 kernfs_create_link+0x27/0x160 fs/kernfs/symlink.c:32
 sysfs_do_create_link_sd+0x90/0x120 fs/sysfs/symlink.c:44
 sysfs_do_create_link fs/sysfs/symlink.c:80 [inline]
 sysfs_create_link+0x5f/0xc0 fs/sysfs/symlink.c:92
 device_add_class_symlinks drivers/base/core.c:1661 [inline]
 device_add+0x461/0x15c0 drivers/base/core.c:1883
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19222 Comm: syz-executor.0 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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_trace+0x29a/0x3d0 mm/slab.c:3616
 kmalloc include/linux/slab.h:488 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 device_private_init drivers/base/core.c:1783 [inline]
 device_add+0xd72/0x15c0 drivers/base/core.c:1828
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007fb531ba9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007fb531ba91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19341 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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
 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632
 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677
 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989
 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307
 sysfs_create_file include/linux/sysfs.h:515 [inline]
 device_create_file+0xc8/0x100 drivers/base/core.c:1320
 device_add+0x37a/0x15c0 drivers/base/core.c:1879
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 1
CPU: 0 PID: 19342 Comm: syz-executor.0 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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 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+0x91/0x630 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]
 kzalloc include/linux/slab.h:661 [inline]
 slhc_init drivers/net/slip/slhc.c:115 [inline]
 slhc_init+0x217/0x550 drivers/net/slip/slhc.c:92
 sl_alloc_bufs drivers/net/slip/slip.c:166 [inline]
 slip_open+0x9c9/0x1130 drivers/net/slip/slip.c:833
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007fb531ba9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007fb531ba91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
arp_tables: arptables: counters copy to user failed while replacing table
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 19390 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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
 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632
 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677
 kernfs_create_link+0x27/0x160 fs/kernfs/symlink.c:32
 sysfs_do_create_link_sd+0x90/0x120 fs/sysfs/symlink.c:44
 sysfs_do_create_link fs/sysfs/symlink.c:80 [inline]
 sysfs_create_link+0x5f/0xc0 fs/sysfs/symlink.c:92
 device_add_class_symlinks drivers/base/core.c:1681 [inline]
 device_add+0x749/0x15c0 drivers/base/core.c:1883
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19420 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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
 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632
 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677
 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989
 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307
 create_files fs/sysfs/group.c:64 [inline]
 internal_create_group+0x22b/0x710 fs/sysfs/group.c:134
 sysfs_create_group fs/sysfs/group.c:156 [inline]
 sysfs_create_groups fs/sysfs/group.c:183 [inline]
 sysfs_create_groups+0x92/0x130 fs/sysfs/group.c:173
 device_add_groups drivers/base/core.c:1049 [inline]
 device_add_attrs drivers/base/core.c:1197 [inline]
 device_add+0x7e5/0x15c0 drivers/base/core.c:1886
arp_tables: arptables: counters copy to user failed while replacing table
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19424 Comm: syz-executor.0 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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_track_caller+0x2bc/0x400 mm/slab.c:3735
 kstrdup+0x36/0x70 mm/util.c:56
 kstrdup_const+0x35/0x60 mm/util.c:77
 kvasprintf_const+0xf1/0x180 lib/kasprintf.c:48
 kobject_set_name_vargs+0x56/0x150 lib/kobject.c:263
 dev_set_name+0xa4/0xc0 drivers/base/core.c:1727
 netdev_register_kobject+0xbd/0x410 net/core/net-sysfs.c:1608
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007fb531ba9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007fb531ba91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19478 Comm: syz-executor.0 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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+0x40/0x3c0 mm/slab.c:3550
 radix_tree_node_alloc.constprop.0+0x1b0/0x2f0 lib/radix-tree.c:397
 idr_get_free_cmn+0x595/0x8d0 lib/radix-tree.c:2170
 idr_get_free include/linux/radix-tree.h:369 [inline]
 idr_alloc_cmn+0xe8/0x1e0 lib/idr.c:24
 idr_alloc include/linux/idr.h:116 [inline]
 idr_alloc_cyclic+0xc2/0x1d0 lib/idr.c:56
arp_tables: arptables: counters copy to user failed while replacing table
 __kernfs_new_node+0xaf/0x470 fs/kernfs/dir.c:638
 kernfs_new_node fs/kernfs/dir.c:677 [inline]
 kernfs_create_dir_ns+0x8c/0x200 fs/kernfs/dir.c:998
 sysfs_create_dir_ns+0xb7/0x1d0 fs/sysfs/dir.c:55
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal+0x28b/0x930 lib/kobject.c:229
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_add+0x11f/0x180 lib/kobject.c:409
 device_add+0x33f/0x15c0 drivers/base/core.c:1869
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007fb531ba9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007fb531ba91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19479 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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_track_caller+0x2bc/0x400 mm/slab.c:3735
 kstrdup+0x36/0x70 mm/util.c:56
 kstrdup_const+0x35/0x60 mm/util.c:77
 __kernfs_new_node+0x2e/0x470 fs/kernfs/dir.c:628
 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677
 kernfs_create_link+0x27/0x160 fs/kernfs/symlink.c:32
 sysfs_do_create_link_sd+0x90/0x120 fs/sysfs/symlink.c:44
 sysfs_do_create_link fs/sysfs/symlink.c:80 [inline]
 sysfs_create_link+0x5f/0xc0 fs/sysfs/symlink.c:92
 device_add_class_symlinks drivers/base/core.c:1681 [inline]
 device_add+0x749/0x15c0 drivers/base/core.c:1883
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
print_req_error: I/O error, dev loop3, sector 0
EXT4-fs warning (device loop3): ext4_enable_quotas:5755: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
Unknown ioctl 19252
Unknown ioctl 19268
EXT4-fs (loop3): mount failed
CPU: 0 PID: 19546 Comm: syz-executor.0 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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
 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632
 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677
 kernfs_create_link+0x27/0x160 fs/kernfs/symlink.c:32
 sysfs_do_create_link_sd+0x90/0x120 fs/sysfs/symlink.c:44
 sysfs_do_create_link fs/sysfs/symlink.c:80 [inline]
 sysfs_create_link+0x5f/0xc0 fs/sysfs/symlink.c:92
 device_add_class_symlinks drivers/base/core.c:1661 [inline]
 device_add+0x461/0x15c0 drivers/base/core.c:1883
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007fb531ba9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007fb531ba91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
EXT4-fs warning (device loop3): ext4_enable_quotas:5755: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix.
Unknown ioctl 19252
Unknown ioctl 19268
EXT4-fs (loop3): mount failed
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19598 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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
 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632
 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677
 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989
 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307
 create_files fs/sysfs/group.c:64 [inline]
 internal_create_group+0x22b/0x710 fs/sysfs/group.c:134
 sysfs_create_group fs/sysfs/group.c:156 [inline]
 sysfs_create_groups fs/sysfs/group.c:183 [inline]
 sysfs_create_groups+0x92/0x130 fs/sysfs/group.c:173
 device_add_groups drivers/base/core.c:1049 [inline]
 device_add_attrs drivers/base/core.c:1197 [inline]
 device_add+0x7e5/0x15c0 drivers/base/core.c:1886
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
arp_tables: arptables: counters copy to user failed while replacing table
CPU: 0 PID: 19596 Comm: syz-executor.0 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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_track_caller+0x2bc/0x400 mm/slab.c:3735
 kstrdup+0x36/0x70 mm/util.c:56
 kstrdup_const+0x35/0x60 mm/util.c:77
 __kernfs_new_node+0x2e/0x470 fs/kernfs/dir.c:628
 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677
 kernfs_create_link+0x27/0x160 fs/kernfs/symlink.c:32
 sysfs_do_create_link_sd+0x90/0x120 fs/sysfs/symlink.c:44
 sysfs_do_create_link fs/sysfs/symlink.c:80 [inline]
 sysfs_create_link+0x5f/0xc0 fs/sysfs/symlink.c:92
 device_add_class_symlinks drivers/base/core.c:1681 [inline]
 device_add+0x749/0x15c0 drivers/base/core.c:1883
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007fb531ba9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007fb531ba91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd780500af R14: 00007fb531ba9300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19620 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 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
 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632
 kernfs_new_node fs/kernfs/dir.c:677 [inline]
 kernfs_create_dir_ns+0x8c/0x200 fs/kernfs/dir.c:998
 sysfs_create_dir_ns+0xb7/0x1d0 fs/sysfs/dir.c:55
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal+0x28b/0x930 lib/kobject.c:229
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_add+0x11f/0x180 lib/kobject.c:409
 device_add+0x33f/0x15c0 drivers/base/core.c:1869
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595
 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: 0033:0x465b09
RSP: 002b:00007f643e0ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f643e0ea1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd7226166f R14: 00007f643e0ea300 R15: 0000000000022000
kobject_add_internal failed for sl3 (error: -12 parent: net)
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19686 Comm: syz-executor.5 Not tainted 4.14.218-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+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 lib/fault-inject.c:149
arp_tables: arptables: counters copy to user failed while replacing table
 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
 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632
 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677
 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989
 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307
 create_files fs/sysfs/group.c:64 [inline]
 internal_create_group+0x22b/0x710 fs/sysfs/group.c:134
 sysfs_create_group fs/sysfs/group.c:156 [inline]
 sysfs_create_groups fs/sysfs/group.c:183 [inline]
 sysfs_create_groups+0x92/0x130 fs/sysfs/group.c:173
 device_add_groups drivers/base/core.c:1049 [inline]
 device_add_attrs drivers/base/core.c:1197 [inline]
 device_add+0x7e5/0x15c0 drivers/base/core.c:1886
 netdev_register_kobject+0x181/0x410 net/core/net-sysfs.c:1627
 register_netdevice+0x955/0xe40 net/core/dev.c:7660
 slip_open+0xc01/0x1130 drivers/net/slip/slip.c:839
 tty_ldisc_open+0x6c/0xb0 drivers/tty/tty_ldisc.c:481
 tty_set_ldisc+0x287/0x5d0 drivers/tty/tty_ldisc.c:606
 tiocsetd drivers/tty/tty_io.c:2351 [inline]
 tty_ioctl+0xa2a/0x13c0 drivers/tty/tty_io.c:2595