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BUG: KASAN: slab-out-of-bounds in udf_readdir+0xc5f/0x2240 fs/udf/dir.c:182
Write of size 149 at addr ffff88802166c86a by task syz-executor/3637

CPU: 1 PID: 3637 Comm: syz-executor Not tainted 6.1.106-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:284 [inline]
 print_report+0x15f/0x4f0 mm/kasan/report.c:395
 kasan_report+0x136/0x160 mm/kasan/report.c:495
 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189
 memcpy+0x3c/0x60 mm/kasan/shadow.c:66
 udf_readdir+0xc5f/0x2240 fs/udf/dir.c:182
 iterate_dir+0x224/0x560
 __do_sys_getdents64 fs/readdir.c:369 [inline]
 __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fbcfe9ac093
Code: c1 66 0f 1f 44 00 00 48 83 c4 08 48 89 ef 5b 5d e9 32 43 f8 ff 66 90 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 a8 ff ff ff f7 d8
RSP: 002b:00007ffd9168bca8 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 0000555555dfa600 RCX: 00007fbcfe9ac093
RDX: 0000000000008000 RSI: 0000555555dfa600 RDI: 0000000000000005
RBP: 0000555555dfa5d4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffa8
R13: 0000000000000010 R14: 0000555555dfa5d0 R15: 00007ffd9168df50
 </TASK>

Allocated by task 3637:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383
 kmalloc include/linux/slab.h:556 [inline]
 udf_readdir+0xb78/0x2240 fs/udf/dir.c:172
 iterate_dir+0x224/0x560
 __do_sys_getdents64 fs/readdir.c:369 [inline]
 __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff88802166c800
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 106 bytes inside of
 256-byte region [ffff88802166c800, ffff88802166c900)

The buggy address belongs to the physical page:
page:ffffea0000859b00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2166c
head:ffffea0000859b00 order:1 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 dead000000000100 dead000000000122 ffff888012841b40
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 11, tgid 11 (kworker/u4:1), ts 6926623152, free_ts 0
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2517
 prep_new_page mm/page_alloc.c:2524 [inline]
 get_page_from_freelist+0x322e/0x33b0 mm/page_alloc.c:4290
 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5558
 alloc_slab_page+0x6a/0x150 mm/slub.c:1794
 allocate_slab mm/slub.c:1939 [inline]
 new_slab+0x84/0x2d0 mm/slub.c:1992
 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180
 __slab_alloc mm/slub.c:3279 [inline]
 slab_alloc_node mm/slub.c:3364 [inline]
 __kmem_cache_alloc_node+0x19f/0x260 mm/slub.c:3437
 kmalloc_trace+0x26/0xe0 mm/slab_common.c:1045
 kmalloc include/linux/slab.h:556 [inline]
 scsi_probe_and_add_lun+0x26e/0x4b50 drivers/scsi/scsi_scan.c:1190
 __scsi_scan_target+0x1fc/0x10b0 drivers/scsi/scsi_scan.c:1718
 scsi_scan_channel drivers/scsi/scsi_scan.c:1806 [inline]
 scsi_scan_host_selected+0x37a/0x690 drivers/scsi/scsi_scan.c:1835
 do_scsi_scan_host drivers/scsi/scsi_scan.c:1974 [inline]
 do_scan_async+0x12e/0x780 drivers/scsi/scsi_scan.c:1984
 async_run_entry_fn+0xa2/0x410 kernel/async.c:127
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88802166c780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88802166c800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88802166c880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 06
                                                                ^
 ffff88802166c900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88802166c980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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