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BUG: KASAN: slab-out-of-bounds in strlen+0x93/0xa0 lib/string.c:413
Read of size 1 at addr ffff88814a51e800 by task syz-executor332/5840

CPU: 0 UID: 0 PID: 5840 Comm: syz-executor332 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 strlen+0x93/0xa0 lib/string.c:413
 kstrdup+0x29/0xb0 mm/util.c:81
 debug_string_to_mask+0x82/0x570 fs/orangefs/orangefs-debugfs.c:836
 orangefs_debug_write+0x22e/0x780 fs/orangefs/orangefs-debugfs.c:423
 full_proxy_write+0xfb/0x1b0 fs/debugfs/file.c:356
 vfs_write+0x24c/0x1150 fs/read_write.c:677
 ksys_write+0x12b/0x250 fs/read_write.c:731
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbc33817429
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe079e9e88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffe079ea058 RCX: 00007fbc33817429
RDX: 0000000000000802 RSI: 0000000020000680 RDI: 0000000000000004
RBP: 00007fbc3388a610 R08: 00007ffe079ea058 R09: 00007ffe079ea058
R10: 00007ffe079ea058 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe079ea048 R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Allocated by task 5840:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
 kmalloc_noprof include/linux/slab.h:901 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 orangefs_debug_write+0x14c/0x780 fs/orangefs/orangefs-debugfs.c:401
 full_proxy_write+0xfb/0x1b0 fs/debugfs/file.c:356
 vfs_write+0x24c/0x1150 fs/read_write.c:677
 ksys_write+0x12b/0x250 fs/read_write.c:731
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88814a51e000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 0 bytes to the right of
 allocated 2048-byte region [ffff88814a51e000, ffff88814a51e800)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14a518
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000040 ffff88801ac42000 0000000000000000 dead000000000001
raw: 0000000000000000 0000000080080008 00000001f5000000 0000000000000000
head: 057ff00000000040 ffff88801ac42000 0000000000000000 dead000000000001
head: 0000000000000000 0000000080080008 00000001f5000000 0000000000000000
head: 057ff00000000003 ffffea0005294601 ffffffffffffffff 0000000000000000
head: 0000000000000008 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 1, tgid 1 (swapper/0), ts 23821920811, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
 prep_new_page mm/page_alloc.c:1566 [inline]
 get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
 alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab mm/slub.c:2589 [inline]
 new_slab+0x2c9/0x410 mm/slub.c:2642
 ___slab_alloc+0xce2/0x1650 mm/slub.c:3830
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
 __slab_alloc_node mm/slub.c:3995 [inline]
 slab_alloc_node mm/slub.c:4156 [inline]
 __do_kmalloc_node mm/slub.c:4297 [inline]
 __kmalloc_node_noprof+0x2f0/0x520 mm/slub.c:4304
 __kvmalloc_node_noprof+0xad/0x1a0 mm/util.c:650
 v4l2_ctrl_new+0x16ed/0x2030 drivers/media/v4l2-core/v4l2-ctrls-core.c:1971
 v4l2_ctrl_new_custom+0x3bd/0x9c0 drivers/media/v4l2-core/v4l2-ctrls-core.c:2041
 vivid_create_controls+0x91e/0x3e00 drivers/media/test-drivers/vivid/vivid-ctrls.c:1692
 vivid_create_instance drivers/media/test-drivers/vivid/vivid-core.c:1931 [inline]
 vivid_probe drivers/media/test-drivers/vivid/vivid-core.c:2093 [inline]
 vivid_probe+0x4ddc/0xba20 drivers/media/test-drivers/vivid/vivid-core.c:2078
 platform_probe+0xff/0x1f0 drivers/base/platform.c:1404
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88814a51e700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88814a51e780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88814a51e800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffff88814a51e880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88814a51e900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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