==================================================================
BUG: KASAN: slab-use-after-free in __update_min_deadline kernel/sched/fair.c:805 [inline]
BUG: KASAN: slab-use-after-free in min_deadline_update kernel/sched/fair.c:819 [inline]
BUG: KASAN: slab-use-after-free in min_deadline_cb_propagate kernel/sched/fair.c:825 [inline]
BUG: KASAN: slab-use-after-free in reweight_entity+0x8e3/0xa60 kernel/sched/fair.c:3660
Read of size 8 at addr ffff88807bdf9e70 by task syz-executor.3/5476

CPU: 1 PID: 5476 Comm: syz-executor.3 Not tainted 6.6.0-rc6-syzkaller-00217-gcd8892c07876 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 __update_min_deadline kernel/sched/fair.c:805 [inline]
 min_deadline_update kernel/sched/fair.c:819 [inline]
 min_deadline_cb_propagate kernel/sched/fair.c:825 [inline]
 reweight_entity+0x8e3/0xa60 kernel/sched/fair.c:3660
 entity_tick kernel/sched/fair.c:5317 [inline]
 task_tick_fair+0xee/0xcd0 kernel/sched/fair.c:12392
 scheduler_tick+0x210/0x650 kernel/sched/core.c:5657
 update_process_times+0x19f/0x220 kernel/time/timer.c:2076
 tick_sched_handle+0x8e/0x170 kernel/time/tick-sched.c:254
 tick_sched_timer+0xe9/0x110 kernel/time/tick-sched.c:1492
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x647/0xc10 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1080
 sysvec_apic_timer_interrupt+0x42/0xc0 arch/x86/kernel/apic/apic.c:1074
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x11/0x70 kernel/kcov.c:207
Code: b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 8b 05 cd e2 7b 7e 89 c1 48 8b 34 24 <81> e1 00 01 00 00 65 48 8b 14 25 c0 bc 03 00 a9 00 01 ff 00 74 0e
RSP: 0018:ffffc900001f0510 EFLAGS: 00000286
RAX: 0000000000000102 RBX: ffffc900001f0598 RCX: 0000000000000102
RDX: 0000000000000000 RSI: ffffffff813a5d95 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000009
R10: 0000000000000005 R11: ffffc900001f0ff8 R12: ffffffff8ff94c42
R13: ffffc900037ff590 R14: ffffffff8ff94c46 R15: ffffc900037ff580
 unwind_next_frame+0x765/0x2390 arch/x86/kernel/unwind_orc.c:581
 arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook mm/slab.h:762 [inline]
 slab_alloc_node mm/slub.c:3478 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc+0x16c/0x3b0 mm/slub.c:3502
 dst_alloc+0x9d/0x1b0 net/core/dst.c:89
 ip6_dst_alloc+0x33/0xa0 net/ipv6/route.c:343
 icmp6_dst_alloc+0x74/0x620 net/ipv6/route.c:3263
 ndisc_send_skb+0xffe/0x1420 net/ipv6/ndisc.c:489
 ndisc_send_rs+0x133/0x690 net/ipv6/ndisc.c:719
 addrconf_rs_timer+0x412/0x840 net/ipv6/addrconf.c:3973
 call_timer_fn+0x19e/0x580 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x764/0xb10 kernel/time/timer.c:2022
 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
 __do_softirq+0x218/0x965 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1074
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_is_held_type+0x6/0x140 kernel/locking/lockdep.c:5809
Code: 05 d3 81 8e 04 85 c0 75 e2 48 c7 c6 20 af 8c 8a 48 c7 c7 80 ab 8c 8a e8 88 30 10 f7 0f 0b 31 c0 eb cb 66 90 f3 0f 1e fa 41 57 <41> 56 41 55 41 bd ff ff ff ff 41 54 55 53 48 83 ec 08 8b 0d 9a 81
RSP: 0018:ffffc900037ff580 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc900037f8000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8cbab220
RBP: ffffc900037ff728 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff919c4eb7 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880b993c700
 lock_is_held include/linux/lockdep.h:288 [inline]
 schedule_debug kernel/sched/core.c:5956 [inline]
 __schedule+0x26d5/0x5a10 kernel/sched/core.c:6589
 preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7007
 irqentry_exit+0x35/0x80 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5721
Code: c1 05 25 e3 99 7e 83 f8 01 0f 85 b0 02 00 00 9c 58 f6 c4 02 0f 85 9b 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900037ff808 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920006fff03 RCX: 0000000000000001
RDX: 1ffff11003f4a8c8 RSI: ffffffff8a8cafa0 RDI: ffffffff8ae93420
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff23389d6
R10: ffffffff919c4eb7 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000000 R14: ffff88801b0503c8 R15: 0000000000000000
 down_write+0x93/0x200 kernel/locking/rwsem.c:1573
 i_mmap_lock_write include/linux/fs.h:512 [inline]
 unlink_file_vma+0x81/0x120 mm/mmap.c:128
 free_pgtables+0x311/0x800 mm/memory.c:400
 exit_mmap+0x383/0xa60 mm/mmap.c:3221
 __mmput+0x12a/0x4d0 kernel/fork.c:1349
 mmput+0x62/0x70 kernel/fork.c:1371
 exit_mm kernel/exit.c:567 [inline]
 do_exit+0x9ad/0x2a20 kernel/exit.c:861
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
 get_signal+0x23ba/0x2790 kernel/signal.c:2892
 arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296
 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f66a407cae9
Code: Unable to access opcode bytes at 0x7f66a407cabf.
RSP: 002b:00007f66a4e5e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: 0000000000000000 RBX: 00007f66a419bf80 RCX: 00007f66a407cae9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000001e
RBP: 00007f66a40c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000040 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f66a419bf80 R15: 00007ffeb3192508
 </TASK>

Allocated by task 4705:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook mm/slab.h:762 [inline]
 slab_alloc_node mm/slub.c:3478 [inline]
 kmem_cache_alloc_node+0x180/0x3f0 mm/slub.c:3523
 alloc_task_struct_node kernel/fork.c:173 [inline]
 dup_task_struct kernel/fork.c:1110 [inline]
 copy_process+0x41c/0x73f0 kernel/fork.c:2327
 kernel_clone+0xfd/0x920 kernel/fork.c:2909
 __do_sys_clone+0xba/0x100 kernel/fork.c:3052
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 5140:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
 ____kasan_slab_free mm/kasan/common.c:236 [inline]
 ____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200
 kasan_slab_free include/linux/kasan.h:164 [inline]
 slab_free_hook mm/slub.c:1800 [inline]
 slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826
 slab_free mm/slub.c:3809 [inline]
 kmem_cache_free+0xf0/0x480 mm/slub.c:3831
 put_task_struct include/linux/sched/task.h:136 [inline]
 put_task_struct include/linux/sched/task.h:123 [inline]
 delayed_put_task_struct+0x21b/0x2b0 kernel/exit.c:226
 rcu_do_batch kernel/rcu/tree.c:2139 [inline]
 rcu_core+0x805/0x1bb0 kernel/rcu/tree.c:2403
 __do_softirq+0x218/0x965 kernel/softirq.c:553

Last potentially related work creation:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653
 put_task_struct_rcu_user kernel/exit.c:232 [inline]
 put_task_struct_rcu_user+0x87/0xc0 kernel/exit.c:229
 release_task+0xef7/0x1b70 kernel/exit.c:282
 wait_task_zombie kernel/exit.c:1210 [inline]
 wait_consider_task+0x17b5/0x4000 kernel/exit.c:1437
 do_wait_thread kernel/exit.c:1500 [inline]
 do_wait+0x72a/0xc70 kernel/exit.c:1617
 kernel_wait4+0x16d/0x280 kernel/exit.c:1780
 __do_sys_wait4+0x15b/0x170 kernel/exit.c:1808
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Second to last potentially related work creation:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653
 put_task_struct_rcu_user kernel/exit.c:232 [inline]
 put_task_struct_rcu_user+0x87/0xc0 kernel/exit.c:229
 context_switch kernel/sched/core.c:5385 [inline]
 __schedule+0xee9/0x5a10 kernel/sched/core.c:6695
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6864
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
 _raw_spin_unlock_irq+0x40/0x50 kernel/locking/spinlock.c:202
 process_one_work+0x78c/0x15c0 kernel/workqueue.c:2603
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
 kthread+0x33c/0x440 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304

The buggy address belongs to the object at ffff88807bdf9dc0
 which belongs to the cache task_struct of size 7360
The buggy address is located 176 bytes inside of
 freed 7360-byte region [ffff88807bdf9dc0, ffff88807bdfba80)

The buggy address belongs to the physical page:
page:ffffea0001ef7e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7bdf8
head:ffffea0001ef7e00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888140005500 ffffea000099bc00 0000000000000002
raw: 0000000000000000 0000000000040004 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 4922, tgid 4922 (dhcpcd-run-hook), ts 82480996456, free_ts 82457337847
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1536
 prep_new_page mm/page_alloc.c:1543 [inline]
 get_page_from_freelist+0xee0/0x2f20 mm/page_alloc.c:3170
 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4426
 alloc_pages+0x1a9/0x270 mm/mempolicy.c:2297
 alloc_slab_page mm/slub.c:1870 [inline]
 allocate_slab+0x251/0x380 mm/slub.c:2017
 new_slab mm/slub.c:2070 [inline]
 ___slab_alloc+0x8c7/0x1580 mm/slub.c:3223
 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322
 __slab_alloc_node mm/slub.c:3375 [inline]
 slab_alloc_node mm/slub.c:3468 [inline]
 kmem_cache_alloc_node+0x132/0x3f0 mm/slub.c:3523
 alloc_task_struct_node kernel/fork.c:173 [inline]
 dup_task_struct kernel/fork.c:1110 [inline]
 copy_process+0x41c/0x73f0 kernel/fork.c:2327
 kernel_clone+0xfd/0x920 kernel/fork.c:2909
 __do_sys_clone+0xba/0x100 kernel/fork.c:3052
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1136 [inline]
 free_unref_page_prepare+0x476/0xa40 mm/page_alloc.c:2312
 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2405
 qlink_free mm/kasan/quarantine.c:166 [inline]
 qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185
 kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:292
 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook mm/slab.h:762 [inline]
 slab_alloc_node mm/slub.c:3478 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc+0x16c/0x3b0 mm/slub.c:3502
 getname_flags.part.0+0x50/0x4e0 fs/namei.c:140
 getname_flags include/linux/audit.h:321 [inline]
 getname+0x90/0xe0 fs/namei.c:219
 do_sys_openat2+0x100/0x1e0 fs/open.c:1416
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_openat fs/open.c:1453 [inline]
 __se_sys_openat fs/open.c:1448 [inline]
 __x64_sys_openat+0x175/0x210 fs/open.c:1448
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff88807bdf9d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88807bdf9d80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
>ffff88807bdf9e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff88807bdf9e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807bdf9f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
   0:	b0 01                	mov    $0x1,%al
   2:	00 00                	add    %al,(%rax)
   4:	e8 b0 ff ff ff       	call   0xffffffb9
   9:	31 c0                	xor    %eax,%eax
   b:	c3                   	ret
   c:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  13:	00 00 00 00
  17:	66 90                	xchg   %ax,%ax
  19:	f3 0f 1e fa          	endbr64
  1d:	65 8b 05 cd e2 7b 7e 	mov    %gs:0x7e7be2cd(%rip),%eax        # 0x7e7be2f1
  24:	89 c1                	mov    %eax,%ecx
  26:	48 8b 34 24          	mov    (%rsp),%rsi
* 2a:	81 e1 00 01 00 00    	and    $0x100,%ecx <-- trapping instruction
  30:	65 48 8b 14 25 c0 bc 	mov    %gs:0x3bcc0,%rdx
  37:	03 00
  39:	a9 00 01 ff 00       	test   $0xff0100,%eax
  3e:	74 0e                	je     0x4e