EXT4-fs (loop4): encrypted files will use data=ordered instead of data journaling mode
EXT4-fs (loop4): 1 truncate cleaned up
EXT4-fs (loop4): mounted filesystem without journal. Opts: init_itable,resuid=0x0000000000000000,grpquota,,errors=continue
==================================================================
BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x1159/0x3860 fs/ext4/xattr.c:1731
Read of size 18446744073709551600 at addr ffff88811813b2b8 by task syz.4.46/531

CPU: 1 PID: 531 Comm: syz.4.46 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0x100/0x140 mm/kasan/report.c:452
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
 memmove+0x2d/0x70 mm/kasan/shadow.c:54
 ext4_xattr_set_entry+0x1159/0x3860 fs/ext4/xattr.c:1731
 ext4_xattr_ibody_set+0x114/0x330 fs/ext4/xattr.c:2233
 ext4_destroy_inline_data_nolock+0x20f/0x5e0 fs/ext4/inline.c:464
 ext4_convert_inline_data_to_extent fs/ext4/inline.c:637 [inline]
 ext4_try_to_write_inline_data+0x6df/0x11e0 fs/ext4/inline.c:777
 ext4_write_begin+0x25d/0x1730 fs/ext4/inode.c:1194
 generic_perform_write+0x2ce/0x540 mm/filemap.c:3509
 ext4_buffered_write_iter+0x48c/0x620 fs/ext4/file.c:271
 ext4_file_write_iter+0x49a/0x19a0 fs/ext4/file.c:-1
 call_write_iter include/linux/fs.h:2072 [inline]
 aio_write+0x4d2/0x6d0 fs/aio.c:1595
 __io_submit_one fs/aio.c:-1 [inline]
 io_submit_one+0x71b/0x1900 fs/aio.c:2014
 __do_sys_io_submit fs/aio.c:2073 [inline]
 __se_sys_io_submit+0x17b/0x3d0 fs/aio.c:2043
 __x64_sys_io_submit+0x7b/0x90 fs/aio.c:2043
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef838b7159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fef82310028 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007fef83b3efa0 RCX: 00007fef838b7159
RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007fef83b10000
RBP: 00007fef8394e024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef83b3f038 R14: 00007fef83b3efa0 R15: 00007fff29438b08

The buggy address belongs to the page:
page:ffffea0004604ec0 refcount:3 mapcount:1 mapping:ffff8881092f8290 index:0x2 pfn:0x11813b
aops:def_blk_aops ino:0
flags: 0x400000000002203e(referenced|uptodate|dirty|lru|active|private|mappedtodisk)
raw: 400000000002203e ffffea000499ce88 ffff888128976030 ffff8881092f8290
raw: 0000000000000002 ffff88812ec77540 0000000300000000 ffff88810edca000
page dumped because: kasan: bad access detected
page->mem_cgroup:ffff88810edca000
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 531, ts 32528924555, free_ts 32307666570
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x176/0x190 mm/page_alloc.c:2462
 get_page_from_freelist+0x225f/0x23f0 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x29a/0x640 mm/page_alloc.c:5384
 __alloc_pages include/linux/gfp.h:544 [inline]
 __alloc_pages_node include/linux/gfp.h:557 [inline]
 alloc_pages_node include/linux/gfp.h:571 [inline]
 alloc_pages include/linux/gfp.h:590 [inline]
 __page_cache_alloc include/linux/pagemap.h:290 [inline]
 page_cache_ra_unbounded+0x2d2/0x790 mm/readahead.c:226
 do_page_cache_ra+0xf2/0x110 mm/readahead.c:277
 do_sync_mmap_readahead mm/filemap.c:2668 [inline]
 filemap_fault+0x1132/0x2020 mm/filemap.c:2811
 __do_fault mm/memory.c:4064 [inline]
 do_read_fault mm/memory.c:4408 [inline]
 do_fault mm/memory.c:4536 [inline]
 handle_pte_fault+0x2466/0x3910 mm/memory.c:4800
 __handle_mm_fault mm/memory.c:4953 [inline]
 handle_mm_fault+0xf86/0x1720 mm/memory.c:5367
 faultin_page mm/gup.c:902 [inline]
 __get_user_pages+0xbf8/0x1400 mm/gup.c:1121
 populate_vma_page_range mm/gup.c:1454 [inline]
 __mm_populate+0x31c/0x420 mm/gup.c:1502
 mm_populate include/linux/mm.h:2793 [inline]
 vm_mmap_pgoff+0x23b/0x350 mm/util.c:548
 ksys_mmap_pgoff+0x16f/0x1e0 mm/mmap.c:1712
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:95 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline]
 __x64_sys_mmap+0xfa/0x110 arch/x86/kernel/sys_x86_64.c:86
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1349 [inline]
 __free_pages_ok+0x80b/0x830 mm/page_alloc.c:1629
 free_the_page mm/page_alloc.c:5445 [inline]
 __free_pages+0xd8/0x390 mm/page_alloc.c:5454
 __free_slab+0xcf/0x190 mm/slub.c:1899
 free_slab mm/slub.c:1914 [inline]
 discard_slab mm/slub.c:1920 [inline]
 unfreeze_partials+0x150/0x180 mm/slub.c:2415
 put_cpu_partial+0xc1/0x180 mm/slub.c:2451
 __slab_free+0x2c9/0x3a0 mm/slub.c:3100
 do_slab_free mm/slub.c:3196 [inline]
 ___cache_free+0x10e/0x130 mm/slub.c:3215
 qlink_free+0x50/0x90 mm/kasan/quarantine.c:157
 qlist_free_all+0x5f/0xb0 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x14a/0x160 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:440
 kasan_slab_alloc include/linux/kasan.h:244 [inline]
 slab_post_alloc_hook+0x5d/0x2f0 mm/slab.h:580
 slab_alloc_node mm/slub.c:2952 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 kmem_cache_alloc+0x15a/0x2d0 mm/slub.c:2965
 kmem_cache_alloc_node include/linux/slab.h:426 [inline]
 __alloc_skb+0x9e/0x520 net/core/skbuff.c:200
 alloc_skb include/linux/skbuff.h:1126 [inline]
 nlmsg_new include/net/netlink.h:953 [inline]
 inet_netconf_notify_devconf+0x169/0x220 net/ipv4/devinet.c:2120
 __devinet_sysctl_unregister net/ipv4/devinet.c:2625 [inline]
 devinet_sysctl_unregister net/ipv4/devinet.c:2649 [inline]
 inetdev_destroy net/ipv4/devinet.c:326 [inline]
 inetdev_event+0x7b0/0x1010 net/ipv4/devinet.c:1612

Memory state around the buggy address:
 ffff88811813b180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88811813b200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88811813b280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                        ^
 ffff88811813b300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88811813b380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
EXT4-fs error (device loop4): ext4_ind_map_blocks:602: inode #15: comm syz.4.46: Can't allocate blocks for non-extent mapped inodes with bigalloc