possible deadlock in f

possible deadlock in f_getown
Status: upstream: reported C repro on 2020/09/28 07:48
Reported-by: syzbot+8073030e235a5a84dd31@syzkaller.appspotmail.com
First crash: 153d, last: 2d14h

Cause bisection: introduced by (bisect log) :
commit e918188611f073063415f40fae568fa4d86d9044
Author: Boqun Feng <boqun.feng@gmail.com>
Date: Fri Aug 7 07:42:20 2020 +0000

locking: More accurate annotations for read_lock()

Crash: possible deadlock in f_getown (log)
Repro: C syz .config

Sample crash report:

========================================================
WARNING: possible irq lock inversion dependency detected
5.11.0-rc2-syzkaller #0 Not tainted
--------------------------------------------------------
syz-executor658/8481 just changed the state of lock:
ffff888025e63a38 (&f->f_owner.lock){.+..}-{2:2}, at: f_getown+0x1b/0xb0 fs/fcntl.c:152
but this lock was taken by another, HARDIRQ-safe lock in the past:
 (&dev->event_lock){-.-.}-{2:2}


and interrupts could create inverse lock ordering between them.


other info that might help us debug this:
Chain exists of:
  &dev->event_lock --> &new->fa_lock --> &f->f_owner.lock

 Possible interrupt unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&f->f_owner.lock);
                               local_irq_disable();
                               lock(&dev->event_lock);
                               lock(&new->fa_lock);
  <Interrupt>
    lock(&dev->event_lock);

 *** DEADLOCK ***

no locks held by syz-executor658/8481.

the shortest dependencies between 2nd lock and 1st lock:
   -> (&dev->event_lock){-.-.}-{2:2} {
      IN-HARDIRQ-W at:
                          lock_acquire kernel/locking/lockdep.c:5437 [inline]
                          lock_acquire+0x29d/0x740 kernel/locking/lockdep.c:5402
                          __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
                          _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159
                          input_event drivers/input/input.c:445 [inline]
                          input_event+0x7b/0xb0 drivers/input/input.c:438
                          input_report_key include/linux/input.h:425 [inline]
                          psmouse_report_standard_buttons+0x2c/0x80 drivers/input/mouse/psmouse-base.c:123
                          psmouse_report_standard_packet drivers/input/mouse/psmouse-base.c:141 [inline]
                          psmouse_process_byte+0x1e1/0x890 drivers/input/mouse/psmouse-base.c:232
                          psmouse_handle_byte+0x41/0x1b0 drivers/input/mouse/psmouse-base.c:274
                          psmouse_interrupt+0x304/0xf00 drivers/input/mouse/psmouse-base.c:426
                          serio_interrupt+0x88/0x150 drivers/input/serio/serio.c:1002
                          i8042_interrupt+0x27a/0x520 drivers/input/serio/i8042.c:602
                          __handle_irq_event_percpu+0x303/0x8f0 kernel/irq/handle.c:156
                          handle_irq_event_percpu kernel/irq/handle.c:196 [inline]
                          handle_irq_event+0x102/0x290 kernel/irq/handle.c:213
                          handle_edge_irq+0x25f/0xd00 kernel/irq/chip.c:819
                          asm_call_irq_on_stack+0xf/0x20
                          __run_irq_on_irqstack arch/x86/include/asm/irq_stack.h:48 [inline]
                          run_irq_on_irqstack_cond arch/x86/include/asm/irq_stack.h:101 [inline]
                          handle_irq arch/x86/kernel/irq.c:230 [inline]
                          __common_interrupt arch/x86/kernel/irq.c:249 [inline]
                          common_interrupt+0x120/0x200 arch/x86/kernel/irq.c:239
                          asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:619
                          __preempt_count_add arch/x86/include/asm/preempt.h:79 [inline]
                          preempt_count_add+0x3f/0x140 kernel/sched/core.c:4717
                          unwind_next_frame+0x11f/0x1f90 arch/x86/kernel/unwind_orc.c:428
                          arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
                          stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121
                          kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
                          kasan_set_track+0x1c/0x30 mm/kasan/common.c:46
                          kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:356
                          ____kasan_slab_free+0xe1/0x110 mm/kasan/common.c:362
                          kasan_slab_free include/linux/kasan.h:188 [inline]
                          slab_free_hook mm/slub.c:1547 [inline]
                          slab_free_freelist_hook+0x5d/0x150 mm/slub.c:1580
                          slab_free mm/slub.c:3142 [inline]
                          kmem_cache_free+0x82/0x350 mm/slub.c:3158
                          rcu_do_batch kernel/rcu/tree.c:2489 [inline]
                          rcu_core+0x5eb/0xf00 kernel/rcu/tree.c:2723
                          __do_softirq+0x2a5/0x9f7 kernel/softirq.c:343
                          run_ksoftirqd kernel/softirq.c:650 [inline]
                          run_ksoftirqd+0x2d/0x50 kernel/softirq.c:642
                          smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:165
                          kthread+0x3b1/0x4a0 kernel/kthread.c:292
                          ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
      IN-SOFTIRQ-W at:
                          lock_acquire kernel/locking/lockdep.c:5437 [inline]
                          lock_acquire+0x29d/0x740 kernel/locking/lockdep.c:5402
                          __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
                          _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159
                          input_event drivers/input/input.c:445 [inline]
                          input_event+0x7b/0xb0 drivers/input/input.c:438
                          input_report_key include/linux/input.h:425 [inline]
                          psmouse_report_standard_buttons+0x2c/0x80 drivers/input/mouse/psmouse-base.c:123
                          psmouse_report_standard_packet drivers/input/mouse/psmouse-base.c:141 [inline]
                          psmouse_process_byte+0x1e1/0x890 drivers/input/mouse/psmouse-base.c:232
                          psmouse_handle_byte+0x41/0x1b0 drivers/input/mouse/psmouse-base.c:274
                          psmouse_interrupt+0x304/0xf00 drivers/input/mouse/psmouse-base.c:426
                          serio_interrupt+0x88/0x150 drivers/input/serio/serio.c:1002
                          i8042_interrupt+0x27a/0x520 drivers/input/serio/i8042.c:602
                          __handle_irq_event_percpu+0x303/0x8f0 kernel/irq/handle.c:156
                          handle_irq_event_percpu kernel/irq/handle.c:196 [inline]
                          handle_irq_event+0x102/0x290 kernel/irq/handle.c:213
                          handle_edge_irq+0x25f/0xd00 kernel/irq/chip.c:819
                          asm_call_irq_on_stack+0xf/0x20
                          __run_irq_on_irqstack arch/x86/include/asm/irq_stack.h:48 [inline]
                          run_irq_on_irqstack_cond arch/x86/include/asm/irq_stack.h:101 [inline]
                          handle_irq arch/x86/kernel/irq.c:230 [inline]
                          __common_interrupt arch/x86/kernel/irq.c:249 [inline]
                          common_interrupt+0x120/0x200 arch/x86/kernel/irq.c:239
                          asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:619
                          __preempt_count_add arch/x86/include/asm/preempt.h:79 [inline]
                          preempt_count_add+0x3f/0x140 kernel/sched/core.c:4717
                          unwind_next_frame+0x11f/0x1f90 arch/x86/kernel/unwind_orc.c:428
                          arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
                          stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121
                          kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
                          kasan_set_track+0x1c/0x30 mm/kasan/common.c:46
                          kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:356
                          ____kasan_slab_free+0xe1/0x110 mm/kasan/common.c:362
                          kasan_slab_free include/linux/kasan.h:188 [inline]
                          slab_free_hook mm/slub.c:1547 [inline]
                          slab_free_freelist_hook+0x5d/0x150 mm/slub.c:1580
                          slab_free mm/slub.c:3142 [inline]
                          kmem_cache_free+0x82/0x350 mm/slub.c:3158
                          rcu_do_batch kernel/rcu/tree.c:2489 [inline]
                          rcu_core+0x5eb/0xf00 kernel/rcu/tree.c:2723
                          __do_softirq+0x2a5/0x9f7 kernel/softirq.c:343
                          run_ksoftirqd kernel/softirq.c:650 [inline]
                          run_ksoftirqd+0x2d/0x50 kernel/softirq.c:642
                          smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:165
                          kthread+0x3b1/0x4a0 kernel/kthread.c:292
                          ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
      INITIAL USE at:
                         lock_acquire kernel/locking/lockdep.c:5437 [inline]
                         lock_acquire+0x29d/0x740 kernel/locking/lockdep.c:5402
                         __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
                         _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159
                         input_inject_event+0xa6/0x310 drivers/input/input.c:471
                         __led_set_brightness drivers/leds/led-core.c:48 [inline]
                         led_set_brightness_nopm drivers/leds/led-core.c:275 [inline]
                         led_set_brightness_nosleep+0xe6/0x1a0 drivers/leds/led-core.c:292
                         led_set_brightness+0x134/0x170 drivers/leds/led-core.c:267
                         led_trigger_event drivers/leds/led-triggers.c:387 [inline]
                         led_trigger_event+0x70/0xd0 drivers/leds/led-triggers.c:377
                         kbd_led_trigger_activate+0xfa/0x130 drivers/tty/vt/keyboard.c:1017
                         led_trigger_set+0x61e/0xbd0 drivers/leds/led-triggers.c:195
                         led_trigger_set_default drivers/leds/led-triggers.c:259 [inline]
                         led_trigger_set_default+0x1a6/0x230 drivers/leds/led-triggers.c:246
                         led_classdev_register_ext+0x5b1/0x7c0 drivers/leds/led-class.c:417
                         led_classdev_register include/linux/leds.h:190 [inline]
                         input_leds_connect+0x3fb/0x740 drivers/input/input-leds.c:139
                         input_attach_handler+0x180/0x1f0 drivers/input/input.c:1035
                         input_register_device.cold+0xf0/0x307 drivers/input/input.c:2335
                         atkbd_connect+0x736/0xa00 drivers/input/keyboard/atkbd.c:1293
                         serio_connect_driver drivers/input/serio/serio.c:47 [inline]
                         serio_driver_probe+0x72/0xa0 drivers/input/serio/serio.c:778
                         really_probe+0x291/0xde0 drivers/base/dd.c:561
                         driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:745
                         device_driver_attach+0x228/0x290 drivers/base/dd.c:1020
                         __driver_attach+0x15b/0x2f0 drivers/base/dd.c:1097
                         bus_for_each_dev+0x147/0x1d0 drivers/base/bus.c:305
                         serio_attach_driver drivers/input/serio/serio.c:808 [inline]
                         serio_handle_event+0x5f6/0xa30 drivers/input/serio/serio.c:227
                         process_one_work+0x98d/0x15f0 kernel/workqueue.c:2275
                         worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
                         kthread+0x3b1/0x4a0 kernel/kthread.c:292
                         ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
    }
    ... key      at: [<ffffffff8fa51bc0>] __key.8+0x0/0x40
    ... acquired at:
   __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
   _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
   spin_lock include/linux/spinlock.h:354 [inline]
   evdev_pass_values.part.0+0xf6/0x970 drivers/input/evdev.c:261
   evdev_pass_values drivers/input/evdev.c:253 [inline]
   evdev_events+0x28b/0x3f0 drivers/input/evdev.c:306
   input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
   input_pass_values.part.0+0x284/0x700 drivers/input/input.c:145
   input_pass_values drivers/input/input.c:134 [inline]
   input_handle_event+0x373/0x1440 drivers/input/input.c:404
   input_inject_event+0x2f5/0x310 drivers/input/input.c:476
   evdev_write+0x430/0x760 drivers/input/evdev.c:530
   vfs_write+0x28e/0xa30 fs/read_write.c:603
   ksys_write+0x1ee/0x250 fs/read_write.c:658
   do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
   entry_SYSCALL_64_after_hwframe+0x44/0xa9

  -> (&client->buffer_lock){....}-{2:2} {
     INITIAL USE at:
                       lock_acquire kernel/locking/lockdep.c:5437 [inline]
                       lock_acquire+0x29d/0x740 kernel/locking/lockdep.c:5402
                       __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
                       _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
                       spin_lock include/linux/spinlock.h:354 [inline]
                       evdev_pass_values.part.0+0xf6/0x970 drivers/input/evdev.c:261
                       evdev_pass_values drivers/input/evdev.c:253 [inline]
                       evdev_events+0x28b/0x3f0 drivers/input/evdev.c:306
                       input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
                       input_pass_values.part.0+0x284/0x700 drivers/input/input.c:145
                       input_pass_values drivers/input/input.c:134 [inline]
                       input_handle_event+0x373/0x1440 drivers/input/input.c:404
                       input_inject_event+0x2f5/0x310 drivers/input/input.c:476
                       evdev_write+0x430/0x760 drivers/input/evdev.c:530
                       vfs_write+0x28e/0xa30 fs/read_write.c:603
                       ksys_write+0x1ee/0x250 fs/read_write.c:658
                       do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
                       entry_SYSCALL_64_after_hwframe+0x44/0xa9
   }
   ... key      at: [<ffffffff8fa52040>] __key.4+0x0/0x40
   ... acquired at:
   __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
   _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223
   kill_fasync_rcu fs/fcntl.c:1004 [inline]
   kill_fasync fs/fcntl.c:1025 [inline]
   kill_fasync+0x14b/0x460 fs/fcntl.c:1018
   __pass_event drivers/input/evdev.c:240 [inline]
   evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278
   evdev_pass_values drivers/input/evdev.c:253 [inline]
   evdev_events+0x28b/0x3f0 drivers/input/evdev.c:306
   input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
   input_pass_values.part.0+0x284/0x700 drivers/input/input.c:145
   input_pass_values drivers/input/input.c:134 [inline]
   input_handle_event+0x373/0x1440 drivers/input/input.c:404
   input_inject_event+0x2f5/0x310 drivers/input/input.c:476
   evdev_write+0x430/0x760 drivers/input/evdev.c:530
   vfs_write+0x28e/0xa30 fs/read_write.c:603
   ksys_write+0x1ee/0x250 fs/read_write.c:658
   do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
   entry_SYSCALL_64_after_hwframe+0x44/0xa9

 -> (&new->fa_lock){....}-{2:2} {
    INITIAL READ USE at:
                          lock_acquire kernel/locking/lockdep.c:5437 [inline]
                          lock_acquire+0x29d/0x740 kernel/locking/lockdep.c:5402
                          __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
                          _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223
                          kill_fasync_rcu fs/fcntl.c:1004 [inline]
                          kill_fasync fs/fcntl.c:1025 [inline]
                          kill_fasync+0x14b/0x460 fs/fcntl.c:1018
                          __pass_event drivers/input/evdev.c:240 [inline]
                          evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278
                          evdev_pass_values drivers/input/evdev.c:253 [inline]
                          evdev_events+0x28b/0x3f0 drivers/input/evdev.c:306
                          input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
                          input_pass_values.part.0+0x284/0x700 drivers/input/input.c:145
                          input_pass_values drivers/input/input.c:134 [inline]
                          input_handle_event+0x373/0x1440 drivers/input/input.c:404
                          input_inject_event+0x2f5/0x310 drivers/input/input.c:476
                          evdev_write+0x430/0x760 drivers/input/evdev.c:530
                          vfs_write+0x28e/0xa30 fs/read_write.c:603
                          ksys_write+0x1ee/0x250 fs/read_write.c:658
                          do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
                          entry_SYSCALL_64_after_hwframe+0x44/0xa9
  }
  ... key      at: [<ffffffff8ef8e980>] __key.0+0x0/0x40
  ... acquired at:
   __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
   _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:231
   send_sigio+0x24/0x360 fs/fcntl.c:787
   kill_fasync_rcu fs/fcntl.c:1011 [inline]
   kill_fasync fs/fcntl.c:1025 [inline]
   kill_fasync+0x205/0x460 fs/fcntl.c:1018
   __pass_event drivers/input/evdev.c:240 [inline]
   evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278
   evdev_pass_values drivers/input/evdev.c:253 [inline]
   evdev_events+0x28b/0x3f0 drivers/input/evdev.c:306
   input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
   input_pass_values.part.0+0x284/0x700 drivers/input/input.c:145
   input_pass_values drivers/input/input.c:134 [inline]
   input_handle_event+0x373/0x1440 drivers/input/input.c:404
   input_inject_event+0x2f5/0x310 drivers/input/input.c:476
   evdev_write+0x430/0x760 drivers/input/evdev.c:530
   vfs_write+0x28e/0xa30 fs/read_write.c:603
   ksys_write+0x1ee/0x250 fs/read_write.c:658
   do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
   entry_SYSCALL_64_after_hwframe+0x44/0xa9

-> (&f->f_owner.lock){.+..}-{2:2} {
   HARDIRQ-ON-R at:
                    lock_acquire kernel/locking/lockdep.c:5437 [inline]
                    lock_acquire+0x29d/0x740 kernel/locking/lockdep.c:5402
                    __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
                    _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223
                    f_getown+0x1b/0xb0 fs/fcntl.c:152
                    sock_ioctl+0x4ba/0x6a0 net/socket.c:1122
                    vfs_ioctl fs/ioctl.c:48 [inline]
                    __do_sys_ioctl fs/ioctl.c:753 [inline]
                    __se_sys_ioctl fs/ioctl.c:739 [inline]
                    __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
                    do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
                    entry_SYSCALL_64_after_hwframe+0x44/0xa9
   INITIAL READ USE at:
                        lock_acquire kernel/locking/lockdep.c:5437 [inline]
                        lock_acquire+0x29d/0x740 kernel/locking/lockdep.c:5402
                        __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:159 [inline]
                        _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:231
                        send_sigio+0x24/0x360 fs/fcntl.c:787
                        kill_fasync_rcu fs/fcntl.c:1011 [inline]
                        kill_fasync fs/fcntl.c:1025 [inline]
                        kill_fasync+0x205/0x460 fs/fcntl.c:1018
                        __pass_event drivers/input/evdev.c:240 [inline]
                        evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278
                        evdev_pass_values drivers/input/evdev.c:253 [inline]
                        evdev_events+0x28b/0x3f0 drivers/input/evdev.c:306
                        input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115
                        input_pass_values.part.0+0x284/0x700 drivers/input/input.c:145
                        input_pass_values drivers/input/input.c:134 [inline]
                        input_handle_event+0x373/0x1440 drivers/input/input.c:404
                        input_inject_event+0x2f5/0x310 drivers/input/input.c:476
                        evdev_write+0x430/0x760 drivers/input/evdev.c:530
                        vfs_write+0x28e/0xa30 fs/read_write.c:603
                        ksys_write+0x1ee/0x250 fs/read_write.c:658
                        do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
                        entry_SYSCALL_64_after_hwframe+0x44/0xa9
 }
 ... key      at: [<ffffffff8ef8dba0>] __key.5+0x0/0x40
 ... acquired at:
   mark_usage kernel/locking/lockdep.c:4312 [inline]
   __lock_acquire+0x120a/0x5500 kernel/locking/lockdep.c:4786
   lock_acquire kernel/locking/lockdep.c:5437 [inline]
   lock_acquire+0x29d/0x740 kernel/locking/lockdep.c:5402
   __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
   _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223
   f_getown+0x1b/0xb0 fs/fcntl.c:152
   sock_ioctl+0x4ba/0x6a0 net/socket.c:1122
   vfs_ioctl fs/ioctl.c:48 [inline]
   __do_sys_ioctl fs/ioctl.c:753 [inline]
   __se_sys_ioctl fs/ioctl.c:739 [inline]
   __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
   do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
   entry_SYSCALL_64_after_hwframe+0x44/0xa9


stack backtrace:
CPU: 0 PID: 8481 Comm: syz-executor658 Not tainted 5.11.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:120
 print_irq_inversion_bug kernel/locking/lockdep.c:3740 [inline]
 check_usage_backwards kernel/locking/lockdep.c:3884 [inline]
 mark_lock_irq kernel/locking/lockdep.c:3974 [inline]
 mark_lock.cold+0x1a/0x73 kernel/locking/lockdep.c:4411
 mark_usage kernel/locking/lockdep.c:4312 [inline]
 __lock_acquire+0x120a/0x5500 kernel/locking/lockdep.c:4786
 lock_acquire kernel/locking/lockdep.c:5437 [inline]
 lock_acquire+0x29d/0x740 kernel/locking/lockdep.c:5402
 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
 _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223
 f_getown+0x1b/0xb0 fs/fcntl.c:152
 sock_ioctl+0x4ba/0x6a0 net/socket.c:1122
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x444039
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff0ceb9688 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444039
RDX: 0000000000000000 RSI: 0000000000008904 RDI: 0000000000000004
RBP: 00

Crashes (40):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce	2021/01/09 13:59	upstream	996e435f	a6c52263	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/11/30 12:39	upstream	b6505459	a0092f9d	.config	log	report	syz	C
ci-upstream-kasan-gce	2021/02/26 08:25	upstream	2c87f7a3	76f7fc95	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce-root	2021/02/25 15:49	upstream	29c395c7	76f7fc95	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce-smack-root	2021/02/25 01:10	upstream	719bbd4a	fcc6d71b	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce-smack-root	2021/02/24 05:36	upstream	c03c21ba	fcc6d71b	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce	2021/02/23 04:09	upstream	a99163e9	c26fb06b	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce	2021/02/23 01:52	upstream	a99163e9	c26fb06b	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce	2021/02/10 10:33	upstream	e0756cfc	2bd9619f	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce	2021/02/06 04:53	upstream	1e0d27fc	23a562df	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce	2021/02/05 02:08	upstream	5c279c4c	23a562df	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce	2021/02/05 00:10	upstream	5c279c4c	23a562df	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce-smack-root	2021/02/03 22:59	upstream	3afe9076	624dad51	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce	2021/02/01 20:57	upstream	1048ba83	e6b95f32	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce-smack-root	2021/02/01 18:20	upstream	1048ba83	e6b95f32	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce	2021/02/01 16:24	upstream	1048ba83	e6b95f32	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce-smack-root	2021/01/21 15:49	upstream	9791581c	d4f4eca5	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce-386	2021/02/13 22:29	upstream	ac30d8ce	98682e5e	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce-386	2021/01/28 19:48	upstream	e5ff2cb9	7df34f59	.config	log	report			info	possible deadlock in f_getown
ci-upstream-kasan-gce-selinux-root	2021/01/08 01:49	upstream	f5e6c330	c104d4a3	.config	log	report			info
ci-upstream-kasan-gce-root	2021/01/07 09:54	upstream	71c061d2	c104d4a3	.config	log	report			info
ci-upstream-kasan-gce-root	2021/01/07 00:22	upstream	9f1abbe9	c104d4a3	.config	log	report			info
ci-upstream-kasan-gce-root	2021/01/06 02:00	upstream	6207214a	b1c228e1	.config	log	report			info
ci-upstream-kasan-gce-root	2021/01/01 12:31	upstream	f6e1ea19	79264ae3	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2020/12/29 01:11	upstream	5c8fe583	8259d56c	.config	log	report			info
ci-upstream-kasan-gce	2020/12/18 17:46	upstream	a409ed15	04201c06	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2020/12/17 11:34	upstream	accefff5	04201c06	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2020/11/30 10:55	upstream	b6505459	a0092f9d	.config	log	report			info
ci-upstream-kasan-gce	2020/11/26 11:44	upstream	fa02fcd9	2f1cec62	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2020/11/16 03:06	upstream	0062442e	1bf9a662	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2020/10/28 17:00	upstream	ed8780e3	f24824d3	.config	log	report			info
ci-upstream-kasan-gce-386	2021/01/06 18:24	upstream	9f1abbe9	c104d4a3	.config	log	report			info
ci-upstream-kasan-gce-386	2020/12/14 17:35	upstream	2c85ebc5	97183ed7	.config	log	report			info
ci-upstream-kasan-gce-386	2020/11/08 04:30	upstream	4429f14a	64069d48	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2021/01/12 23:49	linux-next	df869cab	0cdd6185	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/12/02 17:44	linux-next	0eedceaf	8c9190ef	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/11/27 03:56	linux-next	6147c83f	5018c946	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/11/16 03:22	linux-next	92edc4ae	1bf9a662	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/09/29 15:25	linux-next	49e7e3e9	1b88c6d5	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/09/28 07:30	linux-next	d1d2220c	5dd8aee8	.config	log	report			info