syzbot

INFO: task syz-executor.0:8699 blocked for more than 143 seconds.
      Not tainted 5.7.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0  D27288  8699   7071 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:3367 [inline]
 __schedule+0x937/0x1ff0 kernel/sched/core.c:4083
 print_usage_bug+0x240/0x240 kernel/locking/lockdep.c:101
 __sched_text_start+0x8/0x8
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline]
 hlock_class kernel/locking/lockdep.c:179 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3146 [inline]
 validate_chain kernel/locking/lockdep.c:3202 [inline]
 __lock_acquire+0x2184/0x4c50 kernel/locking/lockdep.c:4355
 schedule+0xd0/0x2a0 kernel/sched/core.c:4158
 schedule_timeout+0x55b/0x850 kernel/time/timer.c:1874
 find_held_lock+0x2d/0x110 kernel/locking/lockdep.c:4458
 usleep_range+0x160/0x160 kernel/time/timer.c:2093
 __down_common kernel/locking/semaphore.c:219 [inline]
 __down+0x16e/0x2c0 kernel/locking/semaphore.c:237
 lock_downgrade+0x840/0x840 kernel/locking/lockdep.c:4579
 lock_downgrade+0x840/0x840 kernel/locking/lockdep.c:4579
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4934
 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
 _raw_spin_unlock_irq+0x1f/0x80 kernel/locking/spinlock.c:199
 __down_common kernel/locking/semaphore.c:220 [inline]
 __down+0x176/0x2c0 kernel/locking/semaphore.c:237
 __up.isra.0+0x190/0x190 include/linux/list.h:112
 rwlock_bug.part.0+0x90/0x90 include/linux/sched.h:1329
 vcs_release+0x60/0x60 drivers/tty/vt/vc_screen.c:697
 down+0x57/0x80 kernel/locking/semaphore.c:61
 console_lock+0x25/0x80 kernel/printk/printk.c:2314
 vcs_open+0x62/0xc0 drivers/tty/vt/vc_screen.c:688
 chrdev_open+0x219/0x5c0 fs/char_dev.c:414
 cdev_put.part.0+0x50/0x50 fs/char_dev.c:364
 security_file_open+0x84/0x410 security/security.c:1548
 do_dentry_open+0x4ba/0x1290 fs/open.c:797
 cdev_put.part.0+0x50/0x50 fs/char_dev.c:364
 security_inode_permission+0xc4/0xf0 security/security.c:1253
 chown_common+0x550/0x550 fs/open.c:629
 inode_permission+0xab/0x500 fs/namei.c:450
 do_open fs/namei.c:3229 [inline]
 path_openat+0x1e59/0x27d0 fs/namei.c:3346
 path_lookupat.isra.0+0x530/0x530 fs/namei.c:2332
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4934
 do_filp_open+0x192/0x260 fs/namei.c:3373
 may_open_dev+0xf0/0xf0 fs/namei.c:2821
 atomic_try_cmpxchg include/asm-generic/atomic-instrumented.h:694 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:78 [inline]
 do_raw_spin_lock+0x129/0x2e0 kernel/locking/spinlock_debug.c:113
 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock+0x24/0x40 kernel/locking/spinlock.c:183
 spin_unlock include/linux/spinlock.h:393 [inline]
 __alloc_fd+0x46d/0x600 fs/file.c:534
 do_sys_openat2+0x585/0x7d0 fs/open.c:1148
 file_open_root+0x400/0x400 fs/open.c:1129
 _copy_to_user+0x126/0x160 lib/usercopy.c:31
 put_timespec64+0xcb/0x120 kernel/time/time.c:812
 ns_to_kernel_old_timeval+0x100/0x100 kernel/time/time.c:521
 do_sys_open+0xc3/0x140 fs/open.c:1164
 filp_open+0x70/0x70 fs/open.c:1117
 __ia32_sys_clock_settime+0x260/0x260 kernel/time/posix-timers.c:1410
 trace_hardirqs_off_caller+0x55/0x230 kernel/trace/trace_preemptirq.c:73
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
INFO: task syz-executor.0:8721 blocked for more than 143 seconds.
      Not tainted 5.7.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0  D27824  8721   7071 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:3367 [inline]
 __schedule+0x937/0x1ff0 kernel/sched/core.c:4083
 print_usage_bug+0x240/0x240 kernel/locking/lockdep.c:101
 __sched_text_start+0x8/0x8
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline]
 hlock_class kernel/locking/lockdep.c:179 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3146 [inline]
 validate_chain kernel/locking/lockdep.c:3202 [inline]
 __lock_acquire+0x2184/0x4c50 kernel/locking/lockdep.c:4355
 schedule+0xd0/0x2a0 kernel/sched/core.c:4158
 schedule_timeout+0x55b/0x850 kernel/time/timer.c:1874
 find_held_lock+0x2d/0x110 kernel/locking/lockdep.c:4458
 usleep_range+0x160/0x160 kernel/time/timer.c:2093
 __down_common kernel/locking/semaphore.c:219 [inline]
 __down+0x16e/0x2c0 kernel/locking/semaphore.c:237
 lock_downgrade+0x840/0x840 kernel/locking/lockdep.c:4579
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4934
 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
 _raw_spin_unlock_irq+0x1f/0x80 kernel/locking/spinlock.c:199
 __down_common kernel/locking/semaphore.c:220 [inline]
 __down+0x176/0x2c0 kernel/locking/semaphore.c:237
 __up.isra.0+0x190/0x190 include/linux/list.h:112
 rwlock_bug.part.0+0x90/0x90 include/linux/sched.h:1329
 vcs_release+0x60/0x60 drivers/tty/vt/vc_screen.c:697
 down+0x57/0x80 kernel/locking/semaphore.c:61
 console_lock+0x25/0x80 kernel/printk/printk.c:2314
 vcs_open+0x62/0xc0 drivers/tty/vt/vc_screen.c:688
 chrdev_open+0x219/0x5c0 fs/char_dev.c:414
 cdev_put.part.0+0x50/0x50 fs/char_dev.c:364
 security_file_open+0x84/0x410 security/security.c:1548
 do_dentry_open+0x4ba/0x1290 fs/open.c:797
 cdev_put.part.0+0x50/0x50 fs/char_dev.c:364
 security_inode_permission+0xc4/0xf0 security/security.c:1253
 chown_common+0x550/0x550 fs/open.c:629
 inode_permission+0xab/0x500 fs/namei.c:450
 do_open fs/namei.c:3229 [inline]
 path_openat+0x1e59/0x27d0 fs/namei.c:3346
 path_lookupat.isra.0+0x530/0x530 fs/namei.c:2332
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4934
 do_filp_open+0x192/0x260 fs/namei.c:3373
 may_open_dev+0xf0/0xf0 fs/namei.c:2821
 atomic_try_cmpxchg include/asm-generic/atomic-instrumented.h:694 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:78 [inline]
 do_raw_spin_lock+0x129/0x2e0 kernel/locking/spinlock_debug.c:113
 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock+0x24/0x40 kernel/locking/spinlock.c:183
 spin_unlock include/linux/spinlock.h:393 [inline]
 __alloc_fd+0x46d/0x600 fs/file.c:534
 do_sys_openat2+0x585/0x7d0 fs/open.c:1148
 file_open_root+0x400/0x400 fs/open.c:1129
 _copy_to_user+0x126/0x160 lib/usercopy.c:31
 put_timespec64+0xcb/0x120 kernel/time/time.c:812
 ns_to_kernel_old_timeval+0x100/0x100 kernel/time/time.c:521
 do_sys_open+0xc3/0x140 fs/open.c:1164
 filp_open+0x70/0x70 fs/open.c:1117
 __ia32_sys_clock_settime+0x260/0x260 kernel/time/posix-timers.c:1410
 trace_hardirqs_off_caller+0x55/0x230 kernel/trace/trace_preemptirq.c:73
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
INFO: task syz-executor.2:8715 blocked for more than 143 seconds.
      Not tainted 5.7.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2  D25552  8715   7247 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3367 [inline]
 __schedule+0x937/0x1ff0 kernel/sched/core.c:4083
 __sched_text_start+0x8/0x8
 schedule_timeout+0x556/0x850 kernel/time/timer.c:1874
 schedule+0xd0/0x2a0 kernel/sched/core.c:4158
 schedule_timeout+0x55b/0x850 kernel/time/timer.c:1874
 __trace_hardirqs_on_caller kernel/locking/lockdep.c:3657 [inline]
 lockdep_hardirqs_on+0x463/0x620 kernel/locking/lockdep.c:3702
 usleep_range+0x160/0x160 kernel/time/timer.c:2093
 set_irq_regs arch/x86/include/asm/irq_regs.h:27 [inline]
 smp_apic_timer_interrupt+0x1b6/0x600 arch/x86/kernel/apic/apic.c:1142
 retint_kernel+0x2b/0x2b
 __down_common kernel/locking/semaphore.c:220 [inline]
 __down+0x176/0x2c0 kernel/locking/semaphore.c:237
 __up.isra.0+0x190/0x190 include/linux/list.h:112
 rwlock_bug.part.0+0x90/0x90 include/linux/sched.h:1329
 vcs_release+0x60/0x60 drivers/tty/vt/vc_screen.c:697
 vcs_release+0x60/0x60 drivers/tty/vt/vc_screen.c:697
 down+0x57/0x80 kernel/locking/semaphore.c:61
 console_lock+0x25/0x80 kernel/printk/printk.c:2314
 vcs_open+0x62/0xc0 drivers/tty/vt/vc_screen.c:688
 chrdev_open+0x219/0x5c0 fs/char_dev.c:414
 cdev_put.part.0+0x50/0x50 fs/char_dev.c:364
 security_file_open+0x84/0x410 security/security.c:1548
 do_dentry_open+0x4ba/0x1290 fs/open.c:797
 cdev_put.part.0+0x50/0x50 fs/char_dev.c:364
 security_inode_permission+0xc4/0xf0 security/security.c:1253
 chown_common+0x550/0x550 fs/open.c:629
 inode_permission+0xab/0x500 fs/namei.c:450
 do_open fs/namei.c:3229 [inline]
 path_openat+0x1e59/0x27d0 fs/namei.c:3346
 path_lookupat.isra.0+0x530/0x530 fs/namei.c:2332
 print_usage_bug+0x240/0x240 kernel/locking/lockdep.c:101
 trace_hardirqs_on_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:41
 trace_hardirqs_on_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:41
 do_filp_open+0x192/0x260 fs/namei.c:3373
 may_open_dev+0xf0/0xf0 fs/namei.c:2821
 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock+0x24/0x40 kernel/locking/spinlock.c:183
 spin_unlock include/linux/spinlock.h:393 [inline]
 __alloc_fd+0x46d/0x600 fs/file.c:534
 do_sys_openat2+0x585/0x7d0 fs/open.c:1148
 file_open_root+0x400/0x400 fs/open.c:1129
 _copy_to_user+0x126/0x160 lib/usercopy.c:31
 put_timespec64+0xcb/0x120 kernel/time/time.c:812
 ns_to_kernel_old_timeval+0x100/0x100 kernel/time/time.c:521
 do_sys_open+0xc3/0x140 fs/open.c:1164
 filp_open+0x70/0x70 fs/open.c:1117
 __ia32_sys_clock_settime+0x260/0x260 kernel/time/posix-timers.c:1410
 trace_hardirqs_off_caller+0x55/0x230 kernel/trace/trace_preemptirq.c:73
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
INFO: task syz-executor.2:8718 blocked for more than 143 seconds.
      Not tainted 5.7.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2  D27384  8718   7247 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:3367 [inline]
 __schedule+0x937/0x1ff0 kernel/sched/core.c:4083
 print_usage_bug+0x240/0x240 kernel/locking/lockdep.c:101
 __sched_text_start+0x8/0x8
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline]
 hlock_class kernel/locking/lockdep.c:179 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3146 [inline]
 validate_chain kernel/locking/lockdep.c:3202 [inline]
 __lock_acquire+0x2184/0x4c50 kernel/locking/lockdep.c:4355
 schedule+0xd0/0x2a0 kernel/sched/core.c:4158
 schedule_timeout+0x55b/0x850 kernel/time/timer.c:1874
 find_held_lock+0x2d/0x110 kernel/locking/lockdep.c:4458
 usleep_range+0x160/0x160 kernel/time/timer.c:2093
 __down_common kernel/locking/semaphore.c:219 [inline]
 __down+0x16e/0x2c0 kernel/locking/semaphore.c:237
 lock_downgrade+0x840/0x840 kernel/locking/lockdep.c:4579
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4934
 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
 _raw_spin_unlock_irq+0x1f/0x80 kernel/locking/spinlock.c:199
 __down_common kernel/locking/semaphore.c:220 [inline]
 __down+0x176/0x2c0 kernel/locking/semaphore.c:237
 __up.isra.0+0x190/0x190 include/linux/list.h:112
 rwlock_bug.part.0+0x90/0x90 include/linux/sched.h:1329
 vcs_release+0x60/0x60 drivers/tty/vt/vc_screen.c:697
 down+0x57/0x80 kernel/locking/semaphore.c:61
 console_lock+0x25/0x80 kernel/printk/printk.c:2314
 vcs_open+0x62/0xc0 drivers/tty/vt/vc_screen.c:688
 chrdev_open+0x219/0x5c0 fs/char_dev.c:414
 cdev_put.part.0+0x50/0x50 fs/char_dev.c:364
 security_file_open+0x84/0x410 security/security.c:1548
 do_dentry_open+0x4ba/0x1290 fs/open.c:797
 cdev_put.part.0+0x50/0x50 fs/char_dev.c:364
 security_inode_permission+0xc4/0xf0 security/security.c:1253
 chown_common+0x550/0x550 fs/open.c:629
 inode_permission+0xab/0x500 fs/namei.c:450
 do_open fs/namei.c:3229 [inline]
 path_openat+0x1e59/0x27d0 fs/namei.c:3346
 path_lookupat.isra.0+0x530/0x530 fs/namei.c:2332
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4934
 do_filp_open+0x192/0x260 fs/namei.c:3373
 may_open_dev+0xf0/0xf0 fs/namei.c:2821
 atomic_try_cmpxchg include/asm-generic/atomic-instrumented.h:694 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:78 [inline]
 do_raw_spin_lock+0x129/0x2e0 kernel/locking/spinlock_debug.c:113
 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock+0x24/0x40 kernel/locking/spinlock.c:183
 spin_unlock include/linux/spinlock.h:393 [inline]
 __alloc_fd+0x46d/0x600 fs/file.c:534
 do_sys_openat2+0x585/0x7d0 fs/open.c:1148
 file_open_root+0x400/0x400 fs/open.c:1129
 _copy_to_user+0x126/0x160 lib/usercopy.c:31
 put_timespec64+0xcb/0x120 kernel/time/time.c:812
 ns_to_kernel_old_timeval+0x100/0x100 kernel/time/time.c:521
 do_sys_open+0xc3/0x140 fs/open.c:1164
 filp_open+0x70/0x70 fs/open.c:1117
 __ia32_sys_clock_settime+0x260/0x260 kernel/time/posix-timers.c:1410
 trace_hardirqs_off_caller+0x55/0x230 kernel/trace/trace_preemptirq.c:73
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3

Showing all locks held in the system:
1 lock held by khungtaskd/1141:
 #0: ffffffff899bea80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:5754
1 lock held by in:imklog/6738:
 #0: ffff8880a6d543f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:826
2 locks held by syz-executor.5/8645:

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 1141 Comm: khungtaskd Not tainted 5.7.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x70/0xb1 lib/nmi_backtrace.c:101
 lapic_can_unplug_cpu.cold+0x3b/0x3b
 nmi_trigger_cpumask_backtrace+0x231/0x27e lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
 watchdog+0xa8c/0x1010 kernel/hung_task.c:289
 reset_hung_task_detector+0x30/0x30 kernel/hung_task.c:243
 kthread+0x388/0x470 kernel/kthread.c:268
 kthread_mod_delayed_work+0x1a0/0x1a0 kernel/kthread.c:1090
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8645 Comm: syz-executor.5 Not tainted 5.7.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__writeq arch/x86/include/asm/io.h:98 [inline]
RIP: 0010:bitfill_aligned drivers/video/fbdev/core/cfbfillrect.c:68 [inline]
RIP: 0010:bitfill_aligned+0x10c/0x200 drivers/video/fbdev/core/cfbfillrect.c:35
Code: 89 c6 89 c5 e8 e5 cd b3 fd 41 83 fc 07 76 62 45 89 e7 4c 89 ed e8 64 cc b3 fd 48 89 5d 00 48 89 5d 08 48 89 5d 10 48 89 5d 18 <48> 89 5d 20 48 89 5d 28 48 8d 45 38 48 89 5d 30 48 83 c5 40 48 89
RSP: 0018:ffffc9001734f4e0 EFLAGS: 00000246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90013cfc000
RDX: 0000000000040000 RSI: ffffffff83bf68bc RDI: 0000000000000005
RBP: ffff8880000a0080 R08: ffff888046828380 R09: 0000000000000040
R10: ffff888218cf345f R11: ffffed104319e68b R12: 0000000000000028
R13: ffff8880000a0000 R14: 0000000000000000 R15: 0000000000000018
FS:  00007fae59c70700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00036fc80 CR3: 000000008edab000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 cfb_fillrect+0x418/0x7a0 drivers/video/fbdev/core/cfbfillrect.c:327
 cfb_fillrect+0x7a0/0x7a0 drivers/video/fbdev/core/cfbfillrect.c:292
 vga16fb_fillrect+0x68f/0x1960 drivers/video/fbdev/vga16fb.c:951
 memcpy+0x39/0x60 mm/kasan/common.c:107
 bit_clear_margins+0x2d5/0x4a0 drivers/video/fbdev/core/bitblit.c:232
 bit_bmove+0x210/0x210 drivers/video/fbdev/core/bitblit.c:59
 vesafb_probe.cold+0x1162/0x1162
 fbcon_clear_margins+0x1de/0x240 drivers/video/fbdev/core/fbcon.c:1381
 fbcon_switch+0xcde/0x16f0 drivers/video/fbdev/core/fbcon.c:2363
 fbcon_set_def_font+0x370/0x370 drivers/video/fbdev/core/fbcon.c:2710
 fbcon_cursor+0x477/0x650 drivers/video/fbdev/core/fbcon.c:1411
 bit_clear+0x4e0/0x4e0 drivers/video/fbdev/core/fbcon.h:140
 is_console_locked+0x5/0x10 kernel/printk/printk.c:2346
 fbcon_set_origin+0x26/0x50 drivers/video/fbdev/core/fbcon.c:2938
 redraw_screen+0x2ae/0x770 drivers/tty/vt/vt.c:1015
 vesafb_probe.cold+0x1162/0x1162
 respond_string+0x290/0x290 include/linux/tty_flip.h:27
 fbcon_set_palette+0x3b1/0x4a0 drivers/video/fbdev/core/fbcon.c:2764
 fbcon_modechanged+0x581/0x720 drivers/video/fbdev/core/fbcon.c:3000
 fbcon_update_vcs+0x3a/0x50 drivers/video/fbdev/core/fbcon.c:3047
 fb_set_var+0xad0/0xd40 drivers/video/fbdev/core/fbmem.c:1056
 fb_blank+0x190/0x190 drivers/video/fbdev/core/fbmem.c:1081
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline]
 test_ti_thread_flag include/linux/thread_info.h:84 [inline]
 need_resched include/linux/sched.h:1827 [inline]
 preempt_schedule_common+0x5e/0xc0 kernel/sched/core.c:4247
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:50
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
 _raw_spin_unlock_irqrestore+0x62/0xe0 kernel/locking/spinlock.c:191
 do_fb_ioctl+0x390/0x6e0 drivers/video/fbdev/core/fbmem.c:1109
 fb_mmap+0x550/0x550 drivers/video/fbdev/core/fbmem.c:1383
 tomoyo_execute_permission+0x470/0x470 security/tomoyo/file.c:168
 rcu_read_unlock include/linux/rcupdate.h:651 [inline]
 __fget_files+0x30d/0x500 fs/file.c:734
 __sanitizer_cov_trace_switch+0x45/0x70 kernel/kcov.c:310
 ioctl_fioasync fs/ioctl.c:601 [inline]
 do_vfs_ioctl+0x50c/0x1360 fs/ioctl.c:704
 ksys_dup3+0x3c0/0x3c0 include/linux/compiler.h:199
 __do_sys_futex kernel/futex.c:3869 [inline]
 __se_sys_futex kernel/futex.c:3837 [inline]
 __x64_sys_futex+0x380/0x4f0 kernel/futex.c:3837
 fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1185
 do_fb_ioctl+0x6e0/0x6e0 drivers/video/fbdev/core/fbmem.c:1169
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl+0x11a/0x180 fs/ioctl.c:771
 __do_sys_ioctl fs/ioctl.c:780 [inline]
 __se_sys_ioctl fs/ioctl.c:778 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:778
 __trace_hardirqs_on_caller kernel/locking/lockdep.c:3657 [inline]
 lockdep_hardirqs_on+0x463/0x620 kernel/locking/lockdep.c:3702
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45ca29
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fae59c6fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e4ac0 RCX: 000000000045ca29
RDX: 0000000020000000 RSI: 0000000000004601 RDI: 0000000000000006
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000002f2 R14: 00000000004c56c8 R15: 00007fae59c706d4