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BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x8ca/0x1f30 fs/ext4/xattr.c:1732
Read of size 18446744073709551572 at addr ffff8880697bd050 by task syz.3.201/5035

CPU: 0 PID: 5035 Comm: syz.3.201 Not tainted 6.1.119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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
 memmove+0x25/0x60 mm/kasan/shadow.c:54
 ext4_xattr_set_entry+0x8ca/0x1f30 fs/ext4/xattr.c:1732
 ext4_xattr_block_set+0xa58/0x3920 fs/ext4/xattr.c:1979
 ext4_xattr_move_to_block fs/ext4/xattr.c:2616 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2691 [inline]
 ext4_expand_extra_isize_ea+0x10d5/0x1bb0 fs/ext4/xattr.c:2783
 __ext4_expand_extra_isize+0x2f7/0x3d0 fs/ext4/inode.c:5936
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5979 [inline]
 __ext4_mark_inode_dirty+0x54f/0x920 fs/ext4/inode.c:6057
 __ext4_unlink+0x6ed/0xba0 fs/ext4/namei.c:3341
 ext4_unlink+0x1d5/0x670 fs/ext4/namei.c:3370
 vfs_unlink+0x359/0x5f0 fs/namei.c:4322
 do_unlinkat+0x4a5/0x820 fs/namei.c:4390
 __do_sys_unlink fs/namei.c:4438 [inline]
 __se_sys_unlink fs/namei.c:4436 [inline]
 __x64_sys_unlink+0x45/0x50 fs/namei.c:4436
 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: 0033:0x7f8486785d19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8487614038 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007f8486976080 RCX: 00007f8486785d19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 00007f8486801a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8486976080 R15: 00007ffdd65292e8
 </TASK>

Allocated by task 5035:
 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
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slab_common.c:936 [inline]
 __kmalloc_node_track_caller+0xb1/0x220 mm/slab_common.c:956
 kmemdup+0x26/0x60 mm/util.c:129
 ext4_xattr_block_set+0x884/0x3920 fs/ext4/xattr.c:1927
 ext4_xattr_move_to_block fs/ext4/xattr.c:2616 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2691 [inline]
 ext4_expand_extra_isize_ea+0x10d5/0x1bb0 fs/ext4/xattr.c:2783
 __ext4_expand_extra_isize+0x2f7/0x3d0 fs/ext4/inode.c:5936
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5979 [inline]
 __ext4_mark_inode_dirty+0x54f/0x920 fs/ext4/inode.c:6057
 __ext4_unlink+0x6ed/0xba0 fs/ext4/namei.c:3341
 ext4_unlink+0x1d5/0x670 fs/ext4/namei.c:3370
 vfs_unlink+0x359/0x5f0 fs/namei.c:4322
 do_unlinkat+0x4a5/0x820 fs/namei.c:4390
 __do_sys_unlink fs/namei.c:4438 [inline]
 __se_sys_unlink fs/namei.c:4436 [inline]
 __x64_sys_unlink+0x45/0x50 fs/namei.c:4436
 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 ffff8880697bd000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 80 bytes inside of
 1024-byte region [ffff8880697bd000, ffff8880697bd400)

The buggy address belongs to the physical page:
page:ffffea0001a5ee00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x697b8
head:ffffea0001a5ee00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 dead000000000100 dead000000000122 ffff888017c41dc0
raw: 0000000000000000 0000000080100010 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 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 38, tgid 38 (kworker/u4:2), ts 78928223787, free_ts 69163606768
 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+0x3731/0x38d0 mm/page_alloc.c:4313
 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5590
 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
 __do_kmalloc_node mm/slab_common.c:935 [inline]
 __kmalloc+0xa1/0x230 mm/slab_common.c:949
 kmalloc include/linux/slab.h:562 [inline]
 kzalloc include/linux/slab.h:693 [inline]
 ieee802_11_parse_elems_full+0xc4/0x1380 net/mac80211/util.c:1503
 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2248 [inline]
 ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2255 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1605 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x430/0x2dd0 net/mac80211/ibss.c:1638
 ieee80211_iface_process_skb net/mac80211/iface.c:1668 [inline]
 ieee80211_iface_work+0x7aa/0xce0 net/mac80211/iface.c:1722
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1444 [inline]
 free_pcp_prepare mm/page_alloc.c:1494 [inline]
 free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3369
 free_unref_page_list+0x663/0x900 mm/page_alloc.c:3510
 release_pages+0x2836/0x2b40 mm/swap.c:1055
 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:254 [inline]
 tlb_flush_mmu+0xfc/0x210 mm/mmu_gather.c:261
 tlb_finish_mmu+0xce/0x1f0 mm/mmu_gather.c:361
 unmap_region+0x29f/0x2f0 mm/mmap.c:2331
 do_mas_align_munmap+0xef5/0x15a0 mm/mmap.c:2580
 do_mas_munmap+0x246/0x2b0 mm/mmap.c:2638
 __vm_munmap+0x268/0x370 mm/mmap.c:2924
 __do_sys_munmap mm/mmap.c:2949 [inline]
 __se_sys_munmap mm/mmap.c:2946 [inline]
 __x64_sys_munmap+0x5c/0x70 mm/mmap.c:2946
 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

Memory state around the buggy address:
 ffff8880697bcf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880697bcf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880697bd000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                 ^
 ffff8880697bd080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880697bd100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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