==================================================================
BUG: KASAN: use-after-free in __lock_acquire+0x74/0x1ff0 kernel/locking/lockdep.c:4882
Read of size 8 at addr ffff88801bd80a28 by task syz-executor.0/8611

CPU: 0 PID: 8611 Comm: syz-executor.0 Not tainted 5.15.156-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 print_address_description+0x63/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x16b/0x1c0 mm/kasan/report.c:451
 __lock_acquire+0x74/0x1ff0 kernel/locking/lockdep.c:4882
 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
 try_to_wake_up+0xae/0x1300 kernel/sched/core.c:4030
 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x67c/0x890 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 __do_softirq+0x3b3/0x93a kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x155/0x240 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:stack_trace_save+0x8/0x1c0 kernel/stacktrace.c:114
Code: c7 48 39 cb 48 89 c3 77 89 44 89 e0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 45 31 e4 eb e7 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 83 e4 e0 48 81 ec a0 00 00 00 89 d3 89 74 24 1c
RSP: 0018:ffffc9000302ee80 EFLAGS: 00000246
RAX: ffffc9000302eea0 RBX: ffffc9000302eea0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000040 RDI: ffffc9000302eea0
RBP: ffffc9000302ee90 R08: dffffc0000000000 R09: ffffc9000302eea0
R10: 0000000000000004 R11: dffffc0000000001 R12: 0000000000000000
R13: ffffffff81c94b11 R14: 0000000000000800 R15: ffff888076425148
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x80 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1705 [inline]
 slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731
 slab_free mm/slub.c:3499 [inline]
 kmem_cache_free+0x91/0x1f0 mm/slub.c:3515
 uevent_net_broadcast_untagged lib/kobject_uevent.c:337 [inline]
 kobject_uevent_net_broadcast+0x434/0x560 lib/kobject_uevent.c:409
 kobject_uevent_env+0x567/0x8d0 lib/kobject_uevent.c:593
 device_add+0xa4f/0xfd0 drivers/base/core.c:3390
 device_create_groups_vargs drivers/base/core.c:4073 [inline]
 device_create+0x253/0x2e0 drivers/base/core.c:4115
 vcs_make_sysfs+0x51/0x80 drivers/tty/vt/vc_screen.c:795
 vc_allocate+0x6a2/0x7b0 drivers/tty/vt/vt.c:1157
 con_install+0x9c/0x7f0 drivers/tty/vt/vt.c:3382
 tty_driver_install_tty drivers/tty/tty_io.c:1317 [inline]
 tty_init_dev+0xc6/0x4b0 drivers/tty/tty_io.c:1431
 tty_open_by_driver drivers/tty/tty_io.c:2100 [inline]
 tty_open+0x9e1/0xde0 drivers/tty/tty_io.c:2148
 chrdev_open+0x54a/0x630 fs/char_dev.c:414
 do_dentry_open+0x807/0xfb0 fs/open.c:826
 do_open fs/namei.c:3608 [inline]
 path_openat+0x2705/0x2f20 fs/namei.c:3742
 do_filp_open+0x21c/0x460 fs/namei.c:3769
 do_sys_openat2+0x13b/0x500 fs/open.c:1253
 do_sys_open fs/open.c:1269 [inline]
 __do_sys_openat fs/open.c:1285 [inline]
 __se_sys_openat fs/open.c:1280 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1280
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbde8d75aa0
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 09 82 02 00 44 8b 54 24 0c 89 da 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 38 44 89 c7 89 44 24 0c e8 5c 82 02 00 8b 44
RSP: 002b:00007fbde72a6c00 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fbde8d75aa0
RDX: 0000000000000002 RSI: 00007fbde72a6ca0 RDI: 00000000ffffff9c
RBP: 00007fbde72a6ca0 R08: 0000000000000000 R09: 00007fbde72a6a16
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000000b R14: 00007fbde8ea5120 R15: 00007ffed714ccc8
 </TASK>

Allocated by task 2:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 __kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x53/0x380 mm/slab.h:519
 slab_alloc_node mm/slub.c:3220 [inline]
 kmem_cache_alloc_node+0x121/0x2c0 mm/slub.c:3256
 alloc_task_struct_node kernel/fork.c:171 [inline]
 dup_task_struct+0x57/0xb60 kernel/fork.c:894
 copy_process+0x5eb/0x3ef0 kernel/fork.c:2038
 kernel_clone+0x210/0x960 kernel/fork.c:2604
 kernel_thread+0x168/0x1e0 kernel/fork.c:2656
 create_kthread kernel/kthread.c:357 [inline]
 kthreadd+0x57a/0x740 kernel/kthread.c:701
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300

Freed by task 4880:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x80 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1705 [inline]
 slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731
 slab_free mm/slub.c:3499 [inline]
 kmem_cache_free+0x91/0x1f0 mm/slub.c:3515
 rcu_do_batch kernel/rcu/tree.c:2523 [inline]
 rcu_core+0xa15/0x1650 kernel/rcu/tree.c:2763
 __do_softirq+0x3b3/0x93a kernel/softirq.c:558

Last potentially related work creation:
 kasan_save_stack+0x36/0x60 mm/kasan/common.c:38
 kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348
 __call_rcu kernel/rcu/tree.c:3007 [inline]
 call_rcu+0x1c4/0xa70 kernel/rcu/tree.c:3087
 context_switch kernel/sched/core.c:5033 [inline]
 __schedule+0x12cc/0x45b0 kernel/sched/core.c:6376
 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6552
 preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6577
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
 _raw_spin_unlock_irq+0x3c/0x40 kernel/locking/spinlock.c:202
 spin_unlock_irq include/linux/spinlock.h:413 [inline]
 __set_current_blocked+0x2a5/0x2f0 kernel/signal.c:3077
 set_current_blocked kernel/signal.c:3061 [inline]
 signal_delivered kernel/signal.c:2925 [inline]
 signal_setup_done+0x397/0x5f0 kernel/signal.c:2936
 handle_signal arch/x86/kernel/signal.c:842 [inline]
 arch_do_signal_or_restart+0x14a1/0x1890 arch/x86/kernel/signal.c:869
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Second to last potentially related work creation:
 kasan_save_stack+0x36/0x60 mm/kasan/common.c:38
 kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348
 __call_rcu kernel/rcu/tree.c:3007 [inline]
 call_rcu+0x1c4/0xa70 kernel/rcu/tree.c:3087
 release_task+0x16b6/0x1750
 wait_task_zombie kernel/exit.c:1179 [inline]
 wait_consider_task+0x1994/0x2e50 kernel/exit.c:1406
 do_wait_thread kernel/exit.c:1469 [inline]
 do_wait+0x30c/0xaf0 kernel/exit.c:1586
 kernel_wait4+0x29e/0x3e0 kernel/exit.c:1749
 __do_sys_wait4 kernel/exit.c:1777 [inline]
 __se_sys_wait4 kernel/exit.c:1773 [inline]
 __x64_sys_wait4+0x130/0x1e0 kernel/exit.c:1773
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

The buggy address belongs to the object at ffff88801bd80000
 which belongs to the cache task_struct of size 7360
The buggy address is located 2600 bytes inside of
 7360-byte region [ffff88801bd80000, ffff88801bd81cc0)
The buggy address belongs to the page:
page:ffffea00006f6000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1bd80
head:ffffea00006f6000 order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff8880157f3ac1
flags: 0xfff80000010200(slab|head|node=0|zone=1|lastcpupid=0xfff)
raw: 00fff80000010200 0000000000000000 0000000100000001 ffff888011deb3c0
raw: 0000000000000000 0000000000040004 00000001ffffffff ffff8880157f3ac1
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 618, ts 6540190906, free_ts 0
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159
 __alloc_pages+0x272/0x700 mm/page_alloc.c:5423
 alloc_slab_page mm/slub.c:1775 [inline]
 allocate_slab mm/slub.c:1912 [inline]
 new_slab+0xbb/0x4b0 mm/slub.c:1975
 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008
 __slab_alloc mm/slub.c:3095 [inline]
 slab_alloc_node mm/slub.c:3186 [inline]
 kmem_cache_alloc_node+0x1ba/0x2c0 mm/slub.c:3256
 alloc_task_struct_node kernel/fork.c:171 [inline]
 dup_task_struct+0x57/0xb60 kernel/fork.c:894
 copy_process+0x5eb/0x3ef0 kernel/fork.c:2038
 kernel_clone+0x210/0x960 kernel/fork.c:2604
 kernel_thread+0x168/0x1e0 kernel/fork.c:2656
 call_usermodehelper_exec_work+0x58/0x220 kernel/umh.c:174
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88801bd80900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88801bd80980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88801bd80a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                  ^
 ffff88801bd80a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88801bd80b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	48 39 cb             	cmp    %rcx,%rbx
   3:	48 89 c3             	mov    %rax,%rbx
   6:	77 89                	ja     0xffffff91
   8:	44 89 e0             	mov    %r12d,%eax
   b:	48 83 c4 10          	add    $0x10,%rsp
   f:	5b                   	pop    %rbx
  10:	41 5c                	pop    %r12
  12:	41 5d                	pop    %r13
  14:	41 5e                	pop    %r14
  16:	41 5f                	pop    %r15
  18:	5d                   	pop    %rbp
  19:	c3                   	ret
  1a:	0f 0b                	ud2
  1c:	45 31 e4             	xor    %r12d,%r12d
  1f:	eb e7                	jmp    0x8
  21:	55                   	push   %rbp
  22:	48 89 e5             	mov    %rsp,%rbp
  25:	41 57                	push   %r15
  27:	41 56                	push   %r14
* 29:	41 55                	push   %r13 <-- trapping instruction
  2b:	41 54                	push   %r12
  2d:	53                   	push   %rbx
  2e:	48 83 e4 e0          	and    $0xffffffffffffffe0,%rsp
  32:	48 81 ec a0 00 00 00 	sub    $0xa0,%rsp
  39:	89 d3                	mov    %edx,%ebx
  3b:	89 74 24 1c          	mov    %esi,0x1c(%rsp)