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BUG: KASAN: slab-use-after-free in crc16+0x1c0/0x280 lib/crc16.c:58
Read of size 1 at addr ffff88807841e000 by task ext4lazyinit/28843

CPU: 1 PID: 28843 Comm: ext4lazyinit Not tainted 6.3.0-syzkaller-00113-g1a0beef98b58 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:319 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:430
 kasan_report+0x176/0x1b0 mm/kasan/report.c:536
 crc16+0x1c0/0x280 lib/crc16.c:58
 ext4_group_desc_csum+0x90f/0xc50 fs/ext4/super.c:3189
 ext4_group_desc_csum_set+0x19b/0x240 fs/ext4/super.c:3212
 ext4_init_inode_table+0x655/0x800 fs/ext4/ialloc.c:1614
 ext4_run_li_request fs/ext4/super.c:3679 [inline]
 ext4_lazyinit_thread+0x789/0x19a0 fs/ext4/super.c:3770
 kthread+0x270/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

Allocated by task 27609:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 __kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:769
 slab_alloc_node mm/slub.c:3452 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x11f/0x2e0 mm/slub.c:3476
 kmem_cache_zalloc include/linux/slab.h:710 [inline]
 __alloc_file+0x26/0x230 fs/file_table.c:139
 alloc_empty_file+0x96/0x180 fs/file_table.c:188
 path_openat+0xfa/0x3170 fs/namei.c:3701
 do_filp_open+0x234/0x490 fs/namei.c:3742
 do_sys_openat2+0x13f/0x500 fs/open.c:1348
 do_sys_open fs/open.c:1364 [inline]
 __do_sys_openat fs/open.c:1380 [inline]
 __se_sys_openat fs/open.c:1375 [inline]
 __x64_sys_openat+0x247/0x290 fs/open.c:1375
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 5022:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:521
 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:162 [inline]
 slab_free_hook mm/slub.c:1781 [inline]
 slab_free_freelist_hook mm/slub.c:1807 [inline]
 slab_free mm/slub.c:3787 [inline]
 kmem_cache_free+0x297/0x520 mm/slub.c:3809
 rcu_do_batch kernel/rcu/tree.c:2112 [inline]
 rcu_core+0xa4d/0x16f0 kernel/rcu/tree.c:2372
 __do_softirq+0x2ab/0x908 kernel/softirq.c:571

Last potentially related work creation:
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:491
 __call_rcu_common kernel/rcu/tree.c:2622 [inline]
 call_rcu+0x167/0xa70 kernel/rcu/tree.c:2736
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Second to last potentially related work creation:
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:491
 task_work_add+0x8b/0x3a0 kernel/task_work.c:48
 fput+0xe6/0x1b0 fs/file_table.c:377
 filp_close+0x111/0x160 fs/open.c:1465
 __do_sys_close fs/open.c:1478 [inline]
 __se_sys_close fs/open.c:1476 [inline]
 __x64_sys_close+0x37/0xb0 fs/open.c:1476
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff88807841e000
 which belongs to the cache filp of size 456
The buggy address is located 0 bytes inside of
 freed 456-byte region [ffff88807841e000, ffff88807841e1c8)

The buggy address belongs to the physical page:
page:ffffea0001e10780 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7841e
head:ffffea0001e10780 order:1 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff888020ea7b81
anon flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffff888140008b40 ffffea0000779f00 dead000000000005
raw: 0000000000000000 00000000000c000c 00000001ffffffff ffff888020ea7b81
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 5113, tgid 5113 (udevd), ts 419634393047, free_ts 224115014785
 prep_new_page mm/page_alloc.c:2553 [inline]
 get_page_from_freelist+0x3246/0x33c0 mm/page_alloc.c:4326
 __alloc_pages+0x255/0x670 mm/page_alloc.c:5592
 alloc_slab_page+0x6a/0x160 mm/slub.c:1851
 allocate_slab mm/slub.c:1998 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2051
 ___slab_alloc+0xa85/0x10a0 mm/slub.c:3193
 __slab_alloc mm/slub.c:3292 [inline]
 __slab_alloc_node mm/slub.c:3345 [inline]
 slab_alloc_node mm/slub.c:3442 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x1b9/0x2e0 mm/slub.c:3476
 kmem_cache_zalloc include/linux/slab.h:710 [inline]
 __alloc_file+0x26/0x230 fs/file_table.c:139
 alloc_empty_file+0x96/0x180 fs/file_table.c:188
 path_openat+0xfa/0x3170 fs/namei.c:3701
 do_filp_open+0x234/0x490 fs/namei.c:3742
 do_sys_openat2+0x13f/0x500 fs/open.c:1348
 do_sys_open fs/open.c:1364 [inline]
 __do_sys_openat fs/open.c:1380 [inline]
 __se_sys_openat fs/open.c:1375 [inline]
 __x64_sys_openat+0x247/0x290 fs/open.c:1375
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 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:1454 [inline]
 free_pcp_prepare mm/page_alloc.c:1504 [inline]
 free_unref_page_prepare+0xe2f/0xe70 mm/page_alloc.c:3388
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:3483
 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:769
 slab_alloc_node mm/slub.c:3452 [inline]
 __kmem_cache_alloc_node+0x14c/0x290 mm/slub.c:3491
 kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1061
 kmalloc include/linux/slab.h:580 [inline]
 kzalloc include/linux/slab.h:720 [inline]
 smk_fetch+0x92/0x140 security/smack/smack_lsm.c:291
 smack_d_instantiate+0x8d7/0xb40 security/smack/smack_lsm.c:3518
 security_d_instantiate+0x9b/0xf0 security/security.c:3760
 d_instantiate+0x55/0x90 fs/dcache.c:2034
 shmem_mknod+0x17d/0x1c0 mm/shmem.c:2945
 lookup_open fs/namei.c:3416 [inline]
 open_last_lookups fs/namei.c:3484 [inline]
 path_openat+0x13df/0x3170 fs/namei.c:3712
 do_filp_open+0x234/0x490 fs/namei.c:3742
 do_sys_openat2+0x13f/0x500 fs/open.c:1348

Memory state around the buggy address:
 ffff88807841df00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88807841df80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88807841e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff88807841e080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807841e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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