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+0x5e/0xd3
======================================================
WARNING: possible circular locking dependency detected
4.14.300-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor370/7980 is trying to acquire lock:
 (console_owner){....}, at: [<ffffffff814407c7>] log_next kernel/printk/printk.c:495 [inline]
 (console_owner){....}, at: [<ffffffff814407c7>] console_unlock+0x307/0xf20 kernel/printk/printk.c:2396

but task is already holding lock:
 (&(&port->lock)->rlock){-.-.}, at: [<ffffffff8355f9cb>] tty_insert_flip_string_and_push_buffer+0x2b/0x160 drivers/tty/tty_buffer.c:569

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/0xc70 drivers/tty/serial/8250/8250_port.c:1828
       serial8250_handle_irq.part.0+0x2c7/0x390 drivers/tty/serial/8250/8250_port.c:1918
       serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1891 [inline]
       serial8250_default_handle_irq+0x8a/0x1f0 drivers/tty/serial/8250/8250_port.c:1934
       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+0xed/0x240 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

-> #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+0x8cb/0xb40 drivers/tty/serial/8250/8250_port.c:3281
       call_console_drivers kernel/printk/printk.c:1727 [inline]
       console_unlock+0x99d/0xf20 kernel/printk/printk.c:2409
       vprintk_emit+0x224/0x620 kernel/printk/printk.c:1925
       vprintk_func+0x58/0x160 kernel/printk/printk_safe.c:409
       printk+0x9e/0xbc kernel/printk/printk.c:1998
       register_console+0x6f4/0xad0 kernel/printk/printk.c:2728
       univ8250_console_init+0x2f/0x3a drivers/tty/serial/8250/8250_core.c:691
       console_init+0x46/0x53 kernel/printk/printk.c:2809
       start_kernel+0x521/0x763 init/main.c:638
       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_lock_spinning_enable kernel/printk/printk.c:1590 [inline]
       console_unlock+0x36f/0xf20 kernel/printk/printk.c:2406
       vprintk_emit+0x224/0x620 kernel/printk/printk.c:1925
       vprintk_func+0x58/0x160 kernel/printk/printk_safe.c:409
       printk+0x9e/0xbc kernel/printk/printk.c:1998
       fail_dump lib/fault-inject.c:44 [inline]
       should_fail.cold+0xdf/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+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:268
       tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
       tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
       tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
       pty_write+0xc3/0xf0 drivers/tty/pty.c:118
       tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
       __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
       process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
       n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
       tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
       set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
       set_termios drivers/tty/tty_ioctl.c:367 [inline]
       tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
       n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
       n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
       tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
       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+0x5e/0xd3

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 ***

6 locks held by syz-executor370/7980:
 #0:  (&tty->ldisc_sem){++++}, at: [<ffffffff8355be42>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
 #1:  (&o_tty->termios_rwsem/1){++++}, at: [<ffffffff83559623>] tty_set_termios+0xd3/0x810 drivers/tty/tty_ioctl.c:327
 #2:  (&tty->ldisc_sem){++++}, at: [<ffffffff8355befb>] tty_ldisc_ref+0x1b/0x80 drivers/tty/tty_ldisc.c:305
 #3:  (&ldata->output_lock){+.+.}, at: [<ffffffff8354ec4f>] process_echoes+0x9f/0x1a0 drivers/tty/n_tty.c:809
 #4:  (&(&port->lock)->rlock){-.-.}, at: [<ffffffff8355f9cb>] tty_insert_flip_string_and_push_buffer+0x2b/0x160 drivers/tty/tty_buffer.c:569
 #5:  (console_lock){+.+.}, at: [<ffffffff81444128>] vprintk_func+0x58/0x160 kernel/printk/printk_safe.c:409

stack backtrace:
CPU: 1 PID: 7980 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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_lock_spinning_enable kernel/printk/printk.c:1590 [inline]
 console_unlock+0x36f/0xf20 kernel/printk/printk.c:2406
 vprintk_emit+0x224/0x620 kernel/printk/printk.c:1925
 vprintk_func+0x58/0x160 kernel/printk/printk_safe.c:409
 printk+0x9e/0xbc kernel/printk/printk.c:1998
 fail_dump lib/fault-inject.c:44 [inline]
 should_fail.cold+0xdf/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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 7983 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 7986 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 7989 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 7994 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 7997 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8000 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 8003 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8006 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8009 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8012 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8015 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8018 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8021 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 8026 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8029 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 8032 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8035 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8038 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8041 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 8044 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8047 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8050 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 8053 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8056 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8061 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8064 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8067 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8070 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 8073 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+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:268
 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:36 [inline]
 tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570
 pty_write+0xc3/0xf0 drivers/tty/pty.c:118
 tty_put_char+0xfe/0x120 drivers/tty/tty_io.c:2885
 __process_echoes+0x48c/0x8c0 drivers/tty/n_tty.c:728
 process_echoes+0xe9/0x1a0 drivers/tty/n_tty.c:811
 n_tty_set_termios+0x60f/0xcc0 drivers/tty/n_tty.c:1870
 tty_set_termios+0x5d5/0x810 drivers/tty/tty_ioctl.c:340
 set_termios.part.0+0x244/0x3f0 drivers/tty/tty_ioctl.c:413
 set_termios drivers/tty/tty_ioctl.c:367 [inline]
 tty_mode_ioctl+0x7fc/0xa80 drivers/tty/tty_ioctl.c:744
 n_tty_ioctl_helper+0x44/0x350 drivers/tty/tty_ioctl.c:939
 n_tty_ioctl+0x47/0x2e0 drivers/tty/n_tty.c:2466
 tty_ioctl+0x5af/0x1430 drivers/tty/tty_io.c:2670
 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+0x5e/0xd3
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 8076 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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