QAT: Invalid ioctl

======================================================
WARNING: possible circular locking dependency detected
4.15.0-rc3+ #217 Not tainted
------------------------------------------------------
syz-executor3/20328 is trying to acquire lock:
 (&tty->ldisc_sem){++++}, at: [<00000000e8d895d0>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365

but task is already holding lock:
 (&pipe->mutex/1){+.+.}, at: [<00000000c4645938>] pipe_lock_nested fs/pipe.c:67 [inline]
 (&pipe->mutex/1){+.+.}, at: [<00000000c4645938>] pipe_lock+0x56/0x70 fs/pipe.c:75

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #6 (&pipe->mutex/1){+.+.}:
       lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893
       mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908
       pipe_lock_nested fs/pipe.c:67 [inline]
       pipe_lock+0x56/0x70 fs/pipe.c:75
       iter_file_splice_write+0x264/0xf30 fs/splice.c:699
       do_splice_from fs/splice.c:851 [inline]
       do_splice fs/splice.c:1147 [inline]
       SYSC_splice fs/splice.c:1402 [inline]
       SyS_splice+0x7d5/0x1630 fs/splice.c:1382
       entry_SYSCALL_64_fastpath+0x1f/0x96

-> #5 (sb_writers){.+.+}:
       spin_lock include/linux/spinlock.h:315 [inline]
       fsnotify_grab_connector+0x11c/0x270 fs/notify/mark.c:481
       fsnotify_destroy_marks+0x1b/0x190 fs/notify/mark.c:701
       fsnotify_clear_marks_by_inode fs/notify/fsnotify.h:33 [inline]
       __fsnotify_inode_delete+0x19/0x20 fs/notify/fsnotify.c:35
       fsnotify_inoderemove include/linux/fsnotify.h:136 [inline]
       dentry_unlink_inode+0x49e/0x5e0 fs/dcache.c:371
       d_delete+0x1a7/0x250 fs/dcache.c:2367

-> #4 ((completion)&req.done){+.+.}:
       lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
       complete_acquire include/linux/completion.h:40 [inline]
       __wait_for_common kernel/sched/completion.c:109 [inline]
       wait_for_common kernel/sched/completion.c:123 [inline]
       wait_for_completion+0xcb/0x7b0 kernel/sched/completion.c:144
       devtmpfs_create_node+0x32b/0x4a0 drivers/base/devtmpfs.c:115
       device_add+0x120f/0x1640 drivers/base/core.c:1824
       device_register+0x1d/0x20 drivers/base/core.c:1905
       tty_register_device_attr+0x422/0x740 drivers/tty/tty_io.c:2956
       tty_port_register_device_attr_serdev+0x100/0x140 drivers/tty/tty_port.c:166
       uart_add_one_port+0xa7a/0x15b0 drivers/tty/serial/serial_core.c:2783
       serial8250_register_8250_port+0xfac/0x1990 drivers/tty/serial/8250/8250_core.c:1045
       serial_pnp_probe+0x5e7/0xac0 drivers/tty/serial/8250/8250_pnp.c:480
       pnp_device_probe+0x15f/0x250 drivers/pnp/driver.c:109
       really_probe drivers/base/dd.c:424 [inline]
       driver_probe_device+0x71b/0xae0 drivers/base/dd.c:566
       __driver_attach+0x181/0x1c0 drivers/base/dd.c:800
       bus_for_each_dev+0x154/0x1e0 drivers/base/bus.c:313
       driver_attach+0x3d/0x50 drivers/base/dd.c:819
       bus_add_driver+0x466/0x620 drivers/base/bus.c:669
       driver_register+0x1bf/0x3c0 drivers/base/driver.c:168
       pnp_register_driver+0x75/0xa0 drivers/pnp/driver.c:272
       serial8250_pnp_init+0x15/0x20 drivers/tty/serial/8250/8250_pnp.c:537
       serial8250_init+0x8f/0x270 drivers/tty/serial/8250/8250_core.c:1122
       do_one_initcall+0x9e/0x330 init/main.c:826
       do_initcall_level init/main.c:892 [inline]
       do_initcalls init/main.c:900 [inline]
       do_basic_setup init/main.c:918 [inline]
       kernel_init_freeable+0x469/0x521 init/main.c:1066
       kernel_init+0x13/0x172 init/main.c:993
       ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:441

-> #3 (&port->mutex){+.+.}:
       lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893
       mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908
       uart_set_termios+0x8f/0x5b0 drivers/tty/serial/serial_core.c:1416
       tty_set_termios+0x6d4/0xa40 drivers/tty/tty_ioctl.c:334
       set_termios+0x377/0x6b0 drivers/tty/tty_ioctl.c:414
       tty_mode_ioctl+0x9fb/0xb10 drivers/tty/tty_ioctl.c:749
       n_tty_ioctl_helper+0x40/0x360 drivers/tty/tty_ioctl.c:940
       n_tty_ioctl+0x148/0x2d0 drivers/tty/n_tty.c:2435
       tty_ioctl+0x32e/0x15f0 drivers/tty/tty_io.c:2638
       vfs_ioctl fs/ioctl.c:46 [inline]
       do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:686
       SYSC_ioctl fs/ioctl.c:701 [inline]
       SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
       entry_SYSCALL_64_fastpath+0x1f/0x96

-> #2 (&tty->termios_rwsem){++++}:
       lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
       down_write+0x87/0x120 kernel/locking/rwsem.c:70
       n_tty_flush_buffer+0x21/0x320 drivers/tty/n_tty.c:357
       tty_buffer_flush+0x29a/0x390 drivers/tty/tty_buffer.c:233
       tty_ldisc_flush+0x25/0x70 drivers/tty/tty_ldisc.c:418
       tty_port_close_start.part.4+0x1cd/0x4e0 drivers/tty/tty_port.c:603
       tty_port_close_start drivers/tty/tty_port.c:646 [inline]
       tty_port_close+0x3f/0x80 drivers/tty/tty_port.c:640
       uart_close+0x77/0x1d0 drivers/tty/serial/serial_core.c:1487
       tty_release+0x446/0x14c0 drivers/tty/tty_io.c:1639
       __fput+0x333/0x7f0 fs/file_table.c:210
       ____fput+0x15/0x20 fs/file_table.c:244
       task_work_run+0x199/0x270 kernel/task_work.c:113
       tracehook_notify_resume include/linux/tracehook.h:191 [inline]
       exit_to_usermode_loop+0x296/0x310 arch/x86/entry/common.c:162
       prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
       syscall_return_slowpath+0x490/0x550 arch/x86/entry/common.c:264
       entry_SYSCALL_64_fastpath+0x94/0x96

-> #1 (&buf->lock){+.+.}:
       lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893
       mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908
       tty_buffer_flush+0xbd/0x390 drivers/tty/tty_buffer.c:222
       tty_ldisc_flush+0x25/0x70 drivers/tty/tty_ldisc.c:418
       tty_port_close_start.part.4+0x1cd/0x4e0 drivers/tty/tty_port.c:603
       tty_port_close_start drivers/tty/tty_port.c:646 [inline]
       tty_port_close+0x3f/0x80 drivers/tty/tty_port.c:640
       uart_close+0x77/0x1d0 drivers/tty/serial/serial_core.c:1487
       tty_release+0x446/0x14c0 drivers/tty/tty_io.c:1639
       __fput+0x333/0x7f0 fs/file_table.c:210
       ____fput+0x15/0x20 fs/file_table.c:244
       task_work_run+0x199/0x270 kernel/task_work.c:113
       tracehook_notify_resume include/linux/tracehook.h:191 [inline]
       exit_to_usermode_loop+0x296/0x310 arch/x86/entry/common.c:162
       prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
       syscall_return_slowpath+0x490/0x550 arch/x86/entry/common.c:264
       entry_SYSCALL_64_fastpath+0x94/0x96

-> #0 (&tty->ldisc_sem){++++}:
       check_prevs_add kernel/locking/lockdep.c:2031 [inline]
       validate_chain kernel/locking/lockdep.c:2473 [inline]
       __lock_acquire+0x3498/0x47f0 kernel/locking/lockdep.c:3500
       lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
       __ldsem_down_read_nested+0xd1/0xa90 drivers/tty/tty_ldsem.c:325
       ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
       tty_ldisc_ref_wait+0x25/0x80 drivers/tty/tty_ldisc.c:277
       tty_read+0xf8/0x250 drivers/tty/tty_io.c:852
       do_loop_readv_writev fs/read_write.c:673 [inline]
       do_iter_read+0x3db/0x5b0 fs/read_write.c:897
       vfs_readv+0x121/0x1c0 fs/read_write.c:959
       kernel_readv fs/splice.c:361 [inline]
       default_file_splice_read+0x508/0xae0 fs/splice.c:416
       do_splice_to+0x110/0x170 fs/splice.c:880
       do_splice fs/splice.c:1173 [inline]
       SYSC_splice fs/splice.c:1402 [inline]
       SyS_splice+0x11a8/0x1630 fs/splice.c:1382
       entry_SYSCALL_64_fastpath+0x1f/0x96

other info that might help us debug this:

Chain exists of:
  &tty->ldisc_sem --> sb_writers --> &pipe->mutex/1

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&pipe->mutex/1);
                               lock(sb_writers);
                               lock(&pipe->mutex/1);
  lock(&tty->ldisc_sem);

 *** DEADLOCK ***

1 lock held by syz-executor3/20328:
 #0:  (&pipe->mutex/1){+.+.}, at: [<00000000c4645938>] pipe_lock_nested fs/pipe.c:67 [inline]
 #0:  (&pipe->mutex/1){+.+.}, at: [<00000000c4645938>] pipe_lock+0x56/0x70 fs/pipe.c:75

stack backtrace:
CPU: 1 PID: 20328 Comm: syz-executor3 Not tainted 4.15.0-rc3+ #217
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+0x194/0x257 lib/dump_stack.c:53
 print_circular_bug+0x42d/0x610 kernel/locking/lockdep.c:1271
 check_prev_add+0x666/0x15f0 kernel/locking/lockdep.c:1914
 check_prevs_add kernel/locking/lockdep.c:2031 [inline]
 validate_chain kernel/locking/lockdep.c:2473 [inline]
 __lock_acquire+0x3498/0x47f0 kernel/locking/lockdep.c:3500
 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
 __ldsem_down_read_nested+0xd1/0xa90 drivers/tty/tty_ldsem.c:325
 ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
 tty_ldisc_ref_wait+0x25/0x80 drivers/tty/tty_ldisc.c:277
 tty_read+0xf8/0x250 drivers/tty/tty_io.c:852
 do_loop_readv_writev fs/read_write.c:673 [inline]
 do_iter_read+0x3db/0x5b0 fs/read_write.c:897
 vfs_readv+0x121/0x1c0 fs/read_write.c:959
 kernel_readv fs/splice.c:361 [inline]
 default_file_splice_read+0x508/0xae0 fs/splice.c:416
 do_splice_to+0x110/0x170 fs/splice.c:880
 do_splice fs/splice.c:1173 [inline]
 SYSC_splice fs/splice.c:1402 [inline]
 SyS_splice+0x11a8/0x1630 fs/splice.c:1382
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a39
RSP: 002b:00007f24fbf4cc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 0000000000000014 RSI: 0000000000000000 RDI: 0000000000000015
RBP: 00000000000002dd R08: 0000000000000007 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f2558
R13: 00000000ffffffff R14: 00007f24fbf4d6d4 R15: 0000000000000000
nla_parse: 32 callbacks suppressed
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 2 bytes leftover after parsing attributes in process `syz-executor3'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 2 bytes leftover after parsing attributes in process `syz-executor3'.
netlink: 2 bytes leftover after parsing attributes in process `syz-executor3'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
device gre0 entered promiscuous mode
netlink: 2 bytes leftover after parsing attributes in process `syz-executor3'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
QAT: Invalid ioctl
netlink: 2 bytes leftover after parsing attributes in process `syz-executor3'.
QAT: Invalid ioctl
netlink: 2 bytes leftover after parsing attributes in process `syz-executor3'.
netlink: 'syz-executor5': attribute type 27 has an invalid length.
netlink: 'syz-executor5': attribute type 27 has an invalid length.
QAT: Invalid ioctl
QAT: Invalid ioctl
nla_parse: 104 callbacks suppressed
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 22233 Comm: syz-executor2 Not tainted 4.15.0-rc3+ #217
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
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+0x194/0x257 lib/dump_stack.c:53
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail+0x8c0/0xa40 lib/fault-inject.c:149
 should_failslab+0xec/0x120 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3371 [inline]
 kmem_cache_alloc+0x47/0x760 mm/slab.c:3545
 kmem_cache_zalloc include/linux/slab.h:678 [inline]
 mmu_topup_memory_cache arch/x86/kvm/mmu.c:865 [inline]
 mmu_topup_memory_caches+0xd2/0x310 arch/x86/kvm/mmu.c:911
 kvm_mmu_load+0x21/0xf90 arch/x86/kvm/mmu.c:4635
 kvm_mmu_reload arch/x86/kvm/mmu.h:85 [inline]
 vcpu_enter_guest arch/x86/kvm/x86.c:6947 [inline]
 vcpu_run arch/x86/kvm/x86.c:7143 [inline]
 kvm_arch_vcpu_ioctl_run+0x2f43/0x5be0 arch/x86/kvm/x86.c:7313
 kvm_vcpu_ioctl+0x64c/0x1010 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2582
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a39
RSP: 002b:00007fd65a5a9c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd65a5a9aa0 RCX: 0000000000452a39
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000015
RBP: 00007fd65a5a9a90 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b75fb
R13: 00007fd65a5a9bc8 R14: 00000000004b75fb R15: 0000000000000000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 22260 Comm: syz-executor2 Not tainted 4.15.0-rc3+ #217
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+0x194/0x257 lib/dump_stack.c:53
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail+0x8c0/0xa40 lib/fault-inject.c:149
 should_failslab+0xec/0x120 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3371 [inline]
 kmem_cache_alloc+0x47/0x760 mm/slab.c:3545
 kmem_cache_zalloc include/linux/slab.h:678 [inline]
 mmu_topup_memory_cache arch/x86/kvm/mmu.c:865 [inline]
 mmu_topup_memory_caches+0xd2/0x310 arch/x86/kvm/mmu.c:911
 kvm_mmu_load+0x21/0xf90 arch/x86/kvm/mmu.c:4635
 kvm_mmu_reload arch/x86/kvm/mmu.h:85 [inline]
 vcpu_enter_guest arch/x86/kvm/x86.c:6947 [inline]
 vcpu_run arch/x86/kvm/x86.c:7143 [inline]
 kvm_arch_vcpu_ioctl_run+0x2f43/0x5be0 arch/x86/kvm/x86.c:7313
 kvm_vcpu_ioctl+0x64c/0x1010 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2582
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a39
RSP: 002b:00007fd65a5a9c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd65a5a9aa0 RCX: 0000000000452a39
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000015
RBP: 00007fd65a5a9a90 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b75fb
R13: 00007fd65a5a9bc8 R14: 00000000004b75fb R15: 0000000000000000
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
QAT: Invalid ioctl
QAT: Invalid ioctl