======================================================
WARNING: possible circular locking dependency detected
5.18.0-rc1-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.4/19861 is trying to acquire lock:
ffffffff88670108 (driver_lock){+.+.}-{3:3}, at: display_open+0x1f/0x220 drivers/media/rc/imon.c:503

but task is already holding lock:
ffffffff883fa450 (minor_rwsem){++++}-{3:3}, at: usb_open+0x24/0x2e0 drivers/usb/core/file.c:39

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (minor_rwsem){++++}-{3:3}:
       down_write+0x90/0x150 kernel/locking/rwsem.c:1514
       usb_deregister_dev+0xaa/0x320 drivers/usb/core/file.c:239
       imon_disconnect+0x62a/0x770 drivers/media/rc/imon.c:2531
       usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458
       device_remove drivers/base/dd.c:531 [inline]
       device_remove+0x11f/0x170 drivers/base/dd.c:523
       __device_release_driver drivers/base/dd.c:1199 [inline]
       device_release_driver_internal+0x4a3/0x680 drivers/base/dd.c:1222
       bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529
       device_del+0x4f3/0xc80 drivers/base/core.c:3592
       usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419
       usb_disconnect.cold+0x278/0x6ec drivers/usb/core/hub.c:2228
       hub_port_connect drivers/usb/core/hub.c:5207 [inline]
       hub_port_connect_change drivers/usb/core/hub.c:5507 [inline]
       port_event drivers/usb/core/hub.c:5665 [inline]
       hub_event+0x1e74/0x4680 drivers/usb/core/hub.c:5747
       process_one_work+0x996/0x1610 kernel/workqueue.c:2289
       worker_thread+0x665/0x1080 kernel/workqueue.c:2436
       kthread+0x2ef/0x3a0 kernel/kthread.c:376
       ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

-> #0
 (driver_lock){+.+.}-{3:3}:
       check_prev_add kernel/locking/lockdep.c:3065 [inline]
       check_prevs_add kernel/locking/lockdep.c:3188 [inline]
       validate_chain kernel/locking/lockdep.c:3803 [inline]
       __lock_acquire+0x2ac6/0x56c0 kernel/locking/lockdep.c:5029
       lock_acquire kernel/locking/lockdep.c:5641 [inline]
       lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5606
       __mutex_lock_common kernel/locking/mutex.c:600 [inline]
       __mutex_lock+0x12f/0x12f0 kernel/locking/mutex.c:733
       display_open+0x1f/0x220 drivers/media/rc/imon.c:503
       usb_open+0x204/0x2e0 drivers/usb/core/file.c:48
       chrdev_open+0x266/0x770 fs/char_dev.c:414
       do_dentry_open+0x49c/0x10a0 fs/open.c:824
       do_open fs/namei.c:3476 [inline]
       path_openat+0x1c71/0x2910 fs/namei.c:3609
       do_filp_open+0x1aa/0x400 fs/namei.c:3636
       do_sys_openat2+0x16d/0x4c0 fs/open.c:1213
       do_sys_open fs/open.c:1229 [inline]
       __do_sys_openat fs/open.c:1245 [inline]
       __se_sys_openat fs/open.c:1240 [inline]
       __x64_sys_openat+0x13f/0x1f0 fs/open.c:1240
       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
       do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
       entry_SYSCALL_64_after_hwframe+0x44/0xae

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(minor_rwsem);
                               lock(driver_lock);
                               lock(minor_rwsem);
  lock(
driver_lock);

 *** DEADLOCK ***

1 lock held by syz-executor.4/19861:
 #0: ffffffff883fa450 (minor_rwsem){++++}-{3:3}, at: usb_open+0x24/0x2e0 drivers/usb/core/file.c:39

stack backtrace:
CPU: 1 PID: 19861 Comm: syz-executor.4 Not tainted 5.18.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 check_noncircular+0x25f/0x2e0 kernel/locking/lockdep.c:2145
 check_prev_add kernel/locking/lockdep.c:3065 [inline]
 check_prevs_add kernel/locking/lockdep.c:3188 [inline]
 validate_chain kernel/locking/lockdep.c:3803 [inline]
 __lock_acquire+0x2ac6/0x56c0 kernel/locking/lockdep.c:5029
 lock_acquire kernel/locking/lockdep.c:5641 [inline]
 lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5606
 __mutex_lock_common kernel/locking/mutex.c:600 [inline]
 __mutex_lock+0x12f/0x12f0 kernel/locking/mutex.c:733
 display_open+0x1f/0x220 drivers/media/rc/imon.c:503
 usb_open+0x204/0x2e0 drivers/usb/core/file.c:48
 chrdev_open+0x266/0x770 fs/char_dev.c:414
 do_dentry_open+0x49c/0x10a0 fs/open.c:824
 do_open fs/namei.c:3476 [inline]
 path_openat+0x1c71/0x2910 fs/namei.c:3609
 do_filp_open+0x1aa/0x400 fs/namei.c:3636
 do_sys_openat2+0x16d/0x4c0 fs/open.c:1213
 do_sys_open fs/open.c:1229 [inline]
 __do_sys_openat fs/open.c:1245 [inline]
 __se_sys_openat fs/open.c:1240 [inline]
 __x64_sys_openat+0x13f/0x1f0 fs/open.c:1240
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f41f8ad6f64
Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44
RSP: 002b:00007f41f8299ca0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f41f8c36f60 RCX: 00007f41f8ad6f64
RDX: 0000000000000002 RSI: 00007f41f8299d40 RDI: 00000000ffffff9c
RBP: 00007f41f8299d40 R08: 0000000000000000 R09: 000000000000000f
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007ffdee8948af R14: 00007f41f829a300 R15: 0000000000022000
 </TASK>
==================================================================
BUG: KASAN: use-after-free in __mutex_lock_common kernel/locking/mutex.c:579 [inline]
BUG: KASAN: use-after-free in __mutex_lock+0x1059/0x12f0 kernel/locking/mutex.c:733
Read of size 8 at addr ffff8881189a3080 by task syz-executor.4/19861

CPU: 0 PID: 19861 Comm: syz-executor.4 Not tainted 5.18.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_address_description.constprop.0.cold+0xeb/0x495 mm/kasan/report.c:313
 print_report mm/kasan/report.c:429 [inline]
 kasan_report.cold+0xf4/0x1c6 mm/kasan/report.c:491
 __mutex_lock_common kernel/locking/mutex.c:579 [inline]
 __mutex_lock+0x1059/0x12f0 kernel/locking/mutex.c:733
 display_close+0x51/0x160 drivers/media/rc/imon.c:557
 __fput+0x277/0x9d0 fs/file_table.c:317
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:37 [inline]
 do_exit+0xaff/0x2980 kernel/exit.c:795
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 get_signal+0x22df/0x24c0 kernel/signal.c:2864
 arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:867
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x156/0x200 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f41f8b24049
Code: Unable to access opcode bytes at RIP 0x7f41f8b2401f.
RSP: 002b:00007f41f829a218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f41f8c36f68 RCX: 00007f41f8b24049
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f41f8c36f68
RBP: 00007f41f8c36f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f41f8c36f6c
R13: 00007ffdee8948af R14: 00007f41f829a300 R15: 0000000000022000
 </TASK>

Allocated by task 13163:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:436 [inline]
 ____kasan_kmalloc mm/kasan/common.c:515 [inline]
 __kasan_kmalloc+0x81/0xa0 mm/kasan/common.c:524
 kmalloc include/linux/slab.h:581 [inline]
 kzalloc include/linux/slab.h:714 [inline]
 imon_init_intf0 drivers/media/rc/imon.c:2216 [inline]
 imon_probe+0xf65/0x2b90 drivers/media/rc/imon.c:2431
 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:541 [inline]
 really_probe+0x23e/0xb20 drivers/base/dd.c:620
 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781
 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:898
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
 __device_attach+0x228/0x4a0 drivers/base/dd.c:969
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
 device_add+0xb83/0x1e20 drivers/base/core.c:3405
 usb_set_configuration+0x101e/0x1900 drivers/usb/core/message.c:2170
 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238
 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:541 [inline]
 really_probe+0x23e/0xb20 drivers/base/dd.c:620
 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781
 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:898
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
 __device_attach+0x228/0x4a0 drivers/base/dd.c:969
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
 device_add+0xb83/0x1e20 drivers/base/core.c:3405
 usb_new_device.cold+0x641/0x1091 drivers/usb/core/hub.c:2566
 hub_port_connect drivers/usb/core/hub.c:5363 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5507 [inline]
 port_event drivers/usb/core/hub.c:5665 [inline]
 hub_event+0x25c6/0x4680 drivers/usb/core/hub.c:5747
 process_one_work+0x996/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2ef/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

Freed by task 4098:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 kasan_set_track+0x21/0x30 mm/kasan/common.c:45
 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
 ____kasan_slab_free mm/kasan/common.c:366 [inline]
 ____kasan_slab_free+0x10f/0x190 mm/kasan/common.c:328
 kasan_slab_free include/linux/kasan.h:200 [inline]
 slab_free_hook mm/slub.c:1728 [inline]
 slab_free_freelist_hook mm/slub.c:1754 [inline]
 slab_free mm/slub.c:3510 [inline]
 kfree+0xc1/0x4f0 mm/slub.c:4552
 free_imon_context drivers/media/rc/imon.c:486 [inline]
 imon_disconnect+0x60a/0x770 drivers/media/rc/imon.c:2546
 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:531 [inline]
 device_remove+0x11f/0x170 drivers/base/dd.c:523
 __device_release_driver drivers/base/dd.c:1199 [inline]
 device_release_driver_internal+0x4a3/0x680 drivers/base/dd.c:1222
 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529
 device_del+0x4f3/0xc80 drivers/base/core.c:3592
 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419
 usb_disconnect.cold+0x278/0x6ec drivers/usb/core/hub.c:2228
 hub_port_connect drivers/usb/core/hub.c:5207 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5507 [inline]
 port_event drivers/usb/core/hub.c:5665 [inline]
 hub_event+0x1e74/0x4680 drivers/usb/core/hub.c:5747
 process_one_work+0x996/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2ef/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

Last potentially related work creation:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 __kasan_record_aux_stack+0x9f/0xb0 mm/kasan/generic.c:348
 insert_work+0x48/0x350 kernel/workqueue.c:1358
 __queue_work+0x62e/0x1140 kernel/workqueue.c:1517
 queue_work_on+0xee/0x110 kernel/workqueue.c:1545
 queue_work include/linux/workqueue.h:502 [inline]
 rpm_suspend+0x108d/0x17b0 drivers/base/power/runtime.c:655
 rpm_idle+0x555/0x8b0 drivers/base/power/runtime.c:497
 __pm_runtime_idle+0xbb/0x2d0 drivers/base/power/runtime.c:1069
 pm_runtime_put include/linux/pm_runtime.h:453 [inline]
 hub_configure drivers/usb/core/hub.c:1669 [inline]
 hub_probe.cold+0x25c1/0x2a77 drivers/usb/core/hub.c:1892
 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:541 [inline]
 really_probe+0x23e/0xb20 drivers/base/dd.c:620
 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781
 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:898
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
 __device_attach+0x228/0x4a0 drivers/base/dd.c:969
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
 device_add+0xb83/0x1e20 drivers/base/core.c:3405
 usb_set_configuration+0x101e/0x1900 drivers/usb/core/message.c:2170
 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238
 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:541 [inline]
 really_probe+0x23e/0xb20 drivers/base/dd.c:620
 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781
 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:898
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
 __device_attach+0x228/0x4a0 drivers/base/dd.c:969
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
 device_add+0xb83/0x1e20 drivers/base/core.c:3405
 usb_new_device.cold+0x641/0x1091 drivers/usb/core/hub.c:2566
 hub_port_connect drivers/usb/core/hub.c:5363 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5507 [inline]
 port_event drivers/usb/core/hub.c:5665 [inline]
 hub_event+0x25c6/0x4680 drivers/usb/core/hub.c:5747
 process_one_work+0x996/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2ef/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

Second to last potentially related work creation:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 __kasan_record_aux_stack+0x9f/0xb0 mm/kasan/generic.c:348
 call_rcu+0x99/0x790 kernel/rcu/tree.c:3074
 netlink_release+0xf08/0x1db0 net/netlink/af_netlink.c:815
 __sock_release+0xcd/0x280 net/socket.c:650
 sock_close+0x18/0x20 net/socket.c:1318
 __fput+0x277/0x9d0 fs/file_table.c:317
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:169 [inline]
 exit_to_user_mode_prepare+0x1f7/0x200 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

The buggy address belongs to the object at ffff8881189a3000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 128 bytes inside of
 2048-byte region [ffff8881189a3000, ffff8881189a3800)

The buggy address belongs to the physical page:
page:ffffea0004626800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1189a0
head:ffffea0004626800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x200000000010200(slab|head|node=0|zone=2)
raw: 0200000000010200 ffffea0004472000 dead000000000002 ffff888100042000
raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1295, tgid 1295 (syz-executor.4), ts 48325322009, free_ts 48313724547
 prep_new_page mm/page_alloc.c:2441 [inline]
 get_page_from_freelist+0x1373/0x2780 mm/page_alloc.c:4182
 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5408
 alloc_pages+0x1aa/0x310 mm/mempolicy.c:2262
 alloc_slab_page mm/slub.c:1799 [inline]
 allocate_slab+0x26c/0x3c0 mm/slub.c:1944
 new_slab mm/slub.c:2004 [inline]
 ___slab_alloc+0x95a/0x1010 mm/slub.c:3005
 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3092
 slab_alloc_node mm/slub.c:3183 [inline]
 slab_alloc mm/slub.c:3225 [inline]
 __kmalloc_track_caller+0x348/0x400 mm/slub.c:4916
 kmemdup+0x23/0x50 mm/util.c:128
 kmemdup include/linux/fortify-string.h:440 [inline]
 neigh_sysctl_register+0x9a/0x5e0 net/core/neighbour.c:3731
 addrconf_sysctl_register+0xb6/0x1d0 net/ipv6/addrconf.c:7095
 ipv6_add_dev+0xa05/0x1280 net/ipv6/addrconf.c:450
 addrconf_notify+0xb09/0x2420 net/ipv6/addrconf.c:3521
 notifier_call_chain+0xb5/0x200 kernel/notifier.c:84
 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1938
 call_netdevice_notifiers_extack net/core/dev.c:1976 [inline]
 call_netdevice_notifiers net/core/dev.c:1990 [inline]
 register_netdevice+0x109e/0x15b0 net/core/dev.c:9994
 register_netdev+0x2d/0x50 net/core/dev.c:10087
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1356 [inline]
 free_pcp_prepare+0x537/0xb80 mm/page_alloc.c:1406
 free_unref_page_prepare mm/page_alloc.c:3328 [inline]
 free_unref_page+0x19/0x580 mm/page_alloc.c:3423
 __unfreeze_partials+0x17c/0x1a0 mm/slub.c:2523
 qlink_free mm/kasan/quarantine.c:157 [inline]
 qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x78/0x80 mm/kasan/common.c:446
 kasan_slab_alloc include/linux/kasan.h:224 [inline]
 slab_post_alloc_hook mm/slab.h:749 [inline]
 slab_alloc_node mm/slub.c:3217 [inline]
 slab_alloc mm/slub.c:3225 [inline]
 kmem_cache_alloc_trace+0x23e/0x3b0 mm/slub.c:3256
 kmalloc include/linux/slab.h:581 [inline]
 tomoyo_print_header security/tomoyo/audit.c:156 [inline]
 tomoyo_init_log+0x18a/0x1ed0 security/tomoyo/audit.c:255
 tomoyo_supervisor+0x34d/0xf00 security/tomoyo/common.c:2088
 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
 tomoyo_path_number_perm+0x419/0x590 security/tomoyo/file.c:734
 security_file_ioctl+0x50/0xb0 security/security.c:1557
 __do_sys_ioctl fs/ioctl.c:864 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0xb3/0x200 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Memory state around the buggy address:
 ffff8881189a2f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881189a3000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881189a3080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff8881189a3100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881189a3180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================