loop3: detected capacity change from 0 to 16256
loop7: detected capacity change from 0 to 16383
Process accounting resumed
==================================================================
BUG: KASAN: use-after-free in __lock_acquire+0x42c5/0x5e70
Read of size 8 at addr ffff8880184f2888 by task syz-executor/61481

CPU: 1 PID: 61481 Comm: syz-executor Not tainted 5.19.0-rc6-next-20220711 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 print_report.cold+0x5e/0x5e1
 kasan_report+0xb1/0x1b0
 __lock_acquire+0x42c5/0x5e70
 lock_acquire+0x1a2/0x530
 _raw_spin_lock_irq+0x32/0x50
 kmemleak_scan+0x21d/0x16a0
 kmemleak_write+0x56c/0x680
 full_proxy_write+0x11d/0x190
 vfs_write+0x2cb/0xd90
 ksys_write+0x127/0x250
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f934f5ee5c3
Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18
RSP: 002b:00007fffe0509da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fffe050a3e8 RCX: 00007f934f5ee5c3
RDX: 0000000000000004 RSI: 00007f934f6a4ed9 RDI: 0000000000000003
RBP: 0000000000000002 R08: 00000000000007af R09: 00007fffe058d080
R10: 00007fffe058d090 R11: 0000000000000246 R12: 00000000fffffff6
R13: 00007fffe050bef1 R14: 0000000000000000 R15: 00000000001e076b
 </TASK>

Allocated by task 60937:
 kasan_save_stack+0x1e/0x40
 __kasan_slab_alloc+0x66/0x80
 kmem_cache_alloc+0x1b1/0x490
 __create_object.isra.0+0x3d/0xc10
 __kmalloc_node+0x278/0x480
 memcg_alloc_slab_cgroups+0x7a/0x120
 allocate_slab+0xd6/0x310
 ___slab_alloc+0x7be/0xc30
 __slab_alloc.constprop.0+0x45/0x80
 kmem_cache_alloc_node+0x386/0x4a0
 copy_process+0x4d2/0x6d60
 kernel_clone+0xe7/0xa60
 __do_sys_clone+0xba/0x100
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Freed by task 61248:
 kasan_save_stack+0x1e/0x40
 kasan_set_track+0x21/0x30
 kasan_set_free_info+0x20/0x30
 __kasan_slab_free+0x108/0x190
 kmem_cache_free+0xfb/0x600
 rcu_core+0x7e2/0x2080
 __do_softirq+0x1c8/0x8cc

Last potentially related work creation:
 kasan_save_stack+0x1e/0x40
 __kasan_record_aux_stack+0x97/0xa0
 call_rcu+0x6a/0xa20
 kfree+0xbb/0x5d0
 __free_slab+0xad/0x1f0
 __unfreeze_partials+0x130/0x150
 qlist_free_all+0x6d/0x190
 kasan_quarantine_reduce+0x180/0x200
 __kasan_slab_alloc+0x78/0x80
 kmem_cache_alloc+0x1b1/0x490
 getname_flags.part.0+0x50/0x4f0
 getname+0x8e/0xd0
 do_sys_openat2+0xf5/0x4c0
 __x64_sys_openat+0x13f/0x1f0
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Second to last potentially related work creation:
 kasan_save_stack+0x1e/0x40
 __kasan_record_aux_stack+0x97/0xa0
 call_rcu+0x6a/0xa20
 kmem_cache_free+0xc1/0x600
 putname+0xfe/0x140
 do_sys_openat2+0x153/0x4c0
 __x64_sys_openat+0x13f/0x1f0
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

The buggy address belongs to the object at ffff8880184f2870
 which belongs to the cache kmemleak_object of size 368
The buggy address is located 24 bytes inside of
 368-byte region [ffff8880184f2870, ffff8880184f29e0)

The buggy address belongs to the physical page:
page:0000000098423b58 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880184f30e0 pfn:0x184f2
head:0000000098423b58 order:1 compound_mapcount:0 compound_pincount:0
flags: 0x100000000010200(slab|head|node=0|zone=1)
raw: 0100000000010200 ffffea00003b9188 ffffea000060ca88 ffff88800784f780
raw: ffff8880184f30e0 0000000000120011 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880184f2780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880184f2800: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb
>ffff8880184f2880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff8880184f2900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880184f2980: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
==================================================================