==================================================================
BUG: KASAN: slab-use-after-free in __lock_acquire+0x78/0x1fd0 kernel/locking/lockdep.c:5005
Read of size 8 at addr ffff88802ae56410 by task udevd/5211

CPU: 0 PID: 5211 Comm: udevd Not tainted 6.9.0-rc5-syzkaller-00355-g2c8159388952 #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+0x241/0x360 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 __lock_acquire+0x78/0x1fd0 kernel/locking/lockdep.c:5005
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
 class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:553 [inline]
 try_to_wake_up+0xb0/0x1470 kernel/sched/core.c:4262
 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1793
 expire_timers kernel/time/timer.c:1844 [inline]
 __run_timers kernel/time/timer.c:2418 [inline]
 __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2429
 run_timer_base kernel/time/timer.c:2438 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2448
 __do_softirq+0x2c6/0x980 kernel/softirq.c:554
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:645
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_switch+0x90/0x120 kernel/kcov.c:340
Code: 85 d2 75 14 e9 9a 00 00 00 41 b8 05 00 00 00 4d 85 d2 0f 84 8b 00 00 00 4c 8b 4c 24 20 65 4c 8b 1c 25 80 d3 03 00 31 d2 eb 08 <48> ff c2 49 39 d2 74 71 4c 8b 74 d6 10 65 8b 05 74 cf 6d 7e a9 00
RSP: 0018:ffffc900047be7e0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888029833c00
RDX: 0000000000000007 RSI: ffffffff8e1a2f20 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000005 R09: ffffffff8141472e
R10: 0000000000000008 R11: ffff888029833c00 R12: ffffffff8fc10d7c
R13: dffffc0000000000 R14: 0000000000000009 R15: 1ffff920008f7d1c
 unwind_next_frame+0x7be/0x2a00 arch/x86/kernel/unwind_orc.c:515
 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3798 [inline]
 kmem_cache_alloc_bulk+0x4ec/0x790 mm/slub.c:4636
 mt_alloc_bulk lib/maple_tree.c:167 [inline]
 mas_alloc_nodes+0x3d5/0x840 lib/maple_tree.c:1264
 mas_node_count_gfp lib/maple_tree.c:1322 [inline]
 mas_node_count lib/maple_tree.c:1336 [inline]
 mas_rebalance lib/maple_tree.c:2979 [inline]
 mas_commit_b_node+0x1312/0x2440 lib/maple_tree.c:3443
 mas_wr_bnode lib/maple_tree.c:4158 [inline]
 mas_wr_modify+0x72e/0x2830 lib/maple_tree.c:4196
 mas_erase+0x3d9/0x550 lib/maple_tree.c:6265
 mtree_erase+0x17f/0x210 lib/maple_tree.c:6593
 simple_offset_remove+0x58/0x90 fs/libfs.c:312
 shmem_unlink+0x172/0x280 mm/shmem.c:3391
 shmem_rename2+0x222/0x340 mm/shmem.c:3476
 vfs_rename+0xbdb/0xf00 fs/namei.c:4880
 do_renameat2+0xd94/0x13f0 fs/namei.c:5037
 __do_sys_rename fs/namei.c:5084 [inline]
 __se_sys_rename fs/namei.c:5082 [inline]
 __x64_sys_rename+0x86/0xa0 fs/namei.c:5082
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6b354e393b
Code: 48 8b 15 f0 64 15 00 83 c8 ff 64 83 3a 15 75 0e 48 8b 7c 24 08 e8 d5 d4 07 00 f7 d8 19 c0 48 83 c4 18 c3 b8 52 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 10 48 8b 15 be 64 15 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffcd3b513a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 0000558a2eaab501 RCX: 00007f6b354e393b
RDX: 0000558f7609de09 RSI: 00007ffcd3b513c8 RDI: 00007ffcd3b517c8
RBP: 0000558a2eaab550 R08: 0000000000000006 R09: 10d8d0249263440b
R10: 000000000000010f R11: 0000000000000202 R12: 0000558a2eaa90f0
R13: 00007ffcd3b513c8 R14: 00007ffcd3b517c8 R15: 0000558a0ecefec8
 </TASK>

Allocated by task 2:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3798 [inline]
 slab_alloc_node mm/slub.c:3845 [inline]
 kmem_cache_alloc_node+0x194/0x380 mm/slub.c:3888
 alloc_task_struct_node kernel/fork.c:176 [inline]
 dup_task_struct+0x57/0x7d0 kernel/fork.c:1107
 copy_process+0x5d1/0x3df0 kernel/fork.c:2220
 kernel_clone+0x223/0x870 kernel/fork.c:2797
 kernel_thread+0x1bc/0x240 kernel/fork.c:2859
 create_kthread kernel/kthread.c:411 [inline]
 kthreadd+0x60d/0x810 kernel/kthread.c:764
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Freed by task 5337:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object+0xa6/0xe0 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2106 [inline]
 slab_free mm/slub.c:4280 [inline]
 kmem_cache_free+0x10b/0x2c0 mm/slub.c:4344
 put_task_struct include/linux/sched/task.h:138 [inline]
 delayed_put_task_struct+0x125/0x2f0 kernel/exit.c:229
 rcu_do_batch kernel/rcu/tree.c:2196 [inline]
 rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2471
 __do_softirq+0x2c6/0x980 kernel/softirq.c:554

Last potentially related work creation:
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47
 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541
 __call_rcu_common kernel/rcu/tree.c:2734 [inline]
 call_rcu+0x167/0xa70 kernel/rcu/tree.c:2838
 context_switch kernel/sched/core.c:5412 [inline]
 __schedule+0x179e/0x4a00 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6838
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2582
 schedule_timeout_uninterruptible kernel/time/timer.c:2616 [inline]
 msleep+0xa2/0xe0 kernel/time/timer.c:2737
 nsim_fib6_rt_add drivers/net/netdevsim/fib.c:693 [inline]
 nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:759 [inline]
 nsim_fib6_event drivers/net/netdevsim/fib.c:856 [inline]
 nsim_fib_event drivers/net/netdevsim/fib.c:889 [inline]
 nsim_fib_event_work+0x2e2c/0x4130 drivers/net/netdevsim/fib.c:1492
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3335
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
 kthread+0x2f0/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

The buggy address belongs to the object at ffff88802ae55a00
 which belongs to the cache task_struct of size 7424
The buggy address is located 2576 bytes inside of
 freed 7424-byte region [ffff88802ae55a00, ffff88802ae57700)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2ae50
head: order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff80000000840(slab|head|node=0|zone=1|lastcpupid=0xfff)
page_type: 0xffffffff()
raw: 00fff80000000840 ffff888015eea500 ffffea0000a67a00 dead000000000002
raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000
head: 00fff80000000840 ffff888015eea500 ffffea0000a67a00 dead000000000002
head: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000
head: 00fff80000000003 ffffea0000ab9401 ffffea0000ab9448 00000000ffffffff
head: 0000000800000000 0000000000000000 00000000ffffffff 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 2, tgid -315317638 (kthreadd), ts 2, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1534
 prep_new_page mm/page_alloc.c:1541 [inline]
 get_page_from_freelist+0x3410/0x35b0 mm/page_alloc.c:3317
 __alloc_pages+0x256/0x6c0 mm/page_alloc.c:4575
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 alloc_slab_page+0x5f/0x160 mm/slub.c:2175
 allocate_slab mm/slub.c:2338 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2391
 ___slab_alloc+0xc73/0x1260 mm/slub.c:3525
 __slab_alloc mm/slub.c:3610 [inline]
 __slab_alloc_node mm/slub.c:3663 [inline]
 slab_alloc_node mm/slub.c:3835 [inline]
 kmem_cache_alloc_node+0x24a/0x380 mm/slub.c:3888
 alloc_task_struct_node kernel/fork.c:176 [inline]
 dup_task_struct+0x57/0x7d0 kernel/fork.c:1107
 copy_process+0x5d1/0x3df0 kernel/fork.c:2220
 kernel_clone+0x223/0x870 kernel/fork.c:2797
 kernel_thread+0x1bc/0x240 kernel/fork.c:2859
 create_kthread kernel/kthread.c:411 [inline]
 kthreadd+0x60d/0x810 kernel/kthread.c:764
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88802ae56300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802ae56380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88802ae56400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                         ^
 ffff88802ae56480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802ae56500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
   0:	85 d2                	test   %edx,%edx
   2:	75 14                	jne    0x18
   4:	e9 9a 00 00 00       	jmp    0xa3
   9:	41 b8 05 00 00 00    	mov    $0x5,%r8d
   f:	4d 85 d2             	test   %r10,%r10
  12:	0f 84 8b 00 00 00    	je     0xa3
  18:	4c 8b 4c 24 20       	mov    0x20(%rsp),%r9
  1d:	65 4c 8b 1c 25 80 d3 	mov    %gs:0x3d380,%r11
  24:	03 00
  26:	31 d2                	xor    %edx,%edx
  28:	eb 08                	jmp    0x32
* 2a:	48 ff c2             	inc    %rdx <-- trapping instruction
  2d:	49 39 d2             	cmp    %rdx,%r10
  30:	74 71                	je     0xa3
  32:	4c 8b 74 d6 10       	mov    0x10(%rsi,%rdx,8),%r14
  37:	65 8b 05 74 cf 6d 7e 	mov    %gs:0x7e6dcf74(%rip),%eax        # 0x7e6dcfb2
  3e:	a9                   	.byte 0xa9