==================================================================
BUG: KASAN: use-after-free in get_max_inline_xattr_value_size+0x373/0x510 fs/ext4/inline.c:61
Read of size 4 at addr ffff8881ed263010 by task syz-executor.5/31817

CPU: 1 PID: 31817 Comm: syz-executor.5 Not tainted 5.4.219-syzkaller-00013-g4a947285bcca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d8/0x241 lib/dump_stack.c:118
 print_address_description+0x8c/0x630 mm/kasan/report.c:384
 __kasan_report+0xf6/0x130 mm/kasan/report.c:516
 kasan_report+0x30/0x60 mm/kasan/common.c:653
 get_max_inline_xattr_value_size+0x373/0x510 fs/ext4/inline.c:61
 ext4_get_max_inline_size+0x139/0x1f0 fs/ext4/inline.c:112
 ext4_try_to_write_inline_data+0xd9/0x1750 fs/ext4/inline.c:673
 ext4_write_begin+0x247/0x1d50 fs/ext4/inode.c:1312
 ext4_da_write_begin+0x4a8/0xf80 fs/ext4/inode.c:3110
 generic_perform_write+0x2f9/0x5a0 mm/filemap.c:3311
 __generic_file_write_iter+0x239/0x490 mm/filemap.c:3440
 ext4_file_write_iter+0x495/0x10e0 fs/ext4/file.c:270
 call_write_iter include/linux/fs.h:1976 [inline]
 new_sync_write fs/read_write.c:483 [inline]
 __vfs_write+0x5e3/0x780 fs/read_write.c:496
 vfs_write+0x210/0x4f0 fs/read_write.c:558
 ksys_write+0x198/0x2c0 fs/read_write.c:611
 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1

Allocated by task 28620:
 save_stack mm/kasan/common.c:70 [inline]
 set_track mm/kasan/common.c:78 [inline]
 __kasan_kmalloc+0x131/0x1e0 mm/kasan/common.c:529
 slab_post_alloc_hook mm/slab.h:584 [inline]
 slab_alloc_node mm/slub.c:2829 [inline]
 slab_alloc mm/slub.c:2837 [inline]
 kmem_cache_alloc+0xd0/0x210 mm/slub.c:2842
 skb_clone+0x1b7/0x380 net/core/skbuff.c:1459
 do_one_broadcast net/netlink/af_netlink.c:1445 [inline]
 netlink_broadcast_filtered+0x65b/0x11d0 net/netlink/af_netlink.c:1520
 netlink_broadcast net/netlink/af_netlink.c:1544 [inline]
 netlink_sendmsg+0x9bb/0xcc0 net/netlink/af_netlink.c:1931
 sock_sendmsg_nosec net/socket.c:638 [inline]
 sock_sendmsg net/socket.c:658 [inline]
 ____sys_sendmsg+0x5a6/0x8f0 net/socket.c:2287
 ___sys_sendmsg net/socket.c:2341 [inline]
 __sys_sendmsg+0x2b7/0x3a0 net/socket.c:2387
 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1

Freed by task 28620:
 save_stack mm/kasan/common.c:70 [inline]
 set_track mm/kasan/common.c:78 [inline]
 kasan_set_free_info mm/kasan/common.c:345 [inline]
 __kasan_slab_free+0x178/0x240 mm/kasan/common.c:487
 slab_free_hook mm/slub.c:1455 [inline]
 slab_free_freelist_hook+0x80/0x150 mm/slub.c:1494
 slab_free mm/slub.c:3080 [inline]
 kmem_cache_free+0xa9/0x1d0 mm/slub.c:3096
 do_one_broadcast net/netlink/af_netlink.c:1469 [inline]
 netlink_broadcast_filtered+0x6d7/0x11d0 net/netlink/af_netlink.c:1520
 netlink_broadcast net/netlink/af_netlink.c:1544 [inline]
 netlink_sendmsg+0x9bb/0xcc0 net/netlink/af_netlink.c:1931
 sock_sendmsg_nosec net/socket.c:638 [inline]
 sock_sendmsg net/socket.c:658 [inline]
 ____sys_sendmsg+0x5a6/0x8f0 net/socket.c:2287
 ___sys_sendmsg net/socket.c:2341 [inline]
 __sys_sendmsg+0x2b7/0x3a0 net/socket.c:2387
 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1

The buggy address belongs to the object at ffff8881ed263000
 which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 16 bytes inside of
 240-byte region [ffff8881ed263000, ffff8881ed2630f0)
The buggy address belongs to the page:
page:ffffea0007b498c0 refcount:1 mapcount:0 mapping:ffff8881f1ddd400 index:0x0
flags: 0x8000000000000200(slab)
raw: 8000000000000200 ffffea0007ba1d80 0000000400000004 ffff8881f1ddd400
raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY)
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook mm/page_alloc.c:2165 [inline]
 prep_new_page+0x194/0x380 mm/page_alloc.c:2171
 get_page_from_freelist+0x524/0x560 mm/page_alloc.c:3794
 __alloc_pages_nodemask+0x372/0x860 mm/page_alloc.c:4891
 alloc_slab_page+0x39/0x3e0 mm/slub.c:343
 allocate_slab mm/slub.c:1683 [inline]
 new_slab+0x97/0x450 mm/slub.c:1749
 new_slab_objects mm/slub.c:2505 [inline]
 ___slab_alloc+0x320/0x4a0 mm/slub.c:2667
 __slab_alloc+0x5a/0x90 mm/slub.c:2707
 slab_alloc_node mm/slub.c:2792 [inline]
 slab_alloc mm/slub.c:2837 [inline]
 kmem_cache_alloc+0x100/0x210 mm/slub.c:2842
 kmem_cache_alloc_node include/linux/slab.h:427 [inline]
 __alloc_skb+0x78/0x4d0 net/core/skbuff.c:198
 __napi_alloc_skb+0x11f/0x540 net/core/skbuff.c:516
 napi_alloc_skb include/linux/skbuff.h:2877 [inline]
 page_to_skb+0x39/0x910 drivers/net/virtio_net.c:412
 receive_mergeable+0x7e2/0x23d0 drivers/net/virtio_net.c:997
 receive_buf+0x140/0x1a30 drivers/net/virtio_net.c:1107
 virtnet_receive drivers/net/virtio_net.c:1399 [inline]
 virtnet_poll+0x4ae/0x1200 drivers/net/virtio_net.c:1508
 napi_poll+0x195/0x670 net/core/dev.c:6353
 net_rx_action+0x37f/0x9c0 net/core/dev.c:6421
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1176 [inline]
 free_pcp_prepare+0x1a4/0x290 mm/page_alloc.c:1233
 free_unref_page_prepare mm/page_alloc.c:3085 [inline]
 free_unref_page mm/page_alloc.c:3134 [inline]
 free_the_page mm/page_alloc.c:4951 [inline]
 __free_pages+0x9c/0x250 mm/page_alloc.c:4959
 __free_slab+0x22b/0x2e0 mm/slub.c:1774
 free_slab mm/slub.c:1789 [inline]
 discard_slab mm/slub.c:1795 [inline]
 unfreeze_partials+0x14f/0x180 mm/slub.c:2288
 put_cpu_partial+0xb5/0x150 mm/slub.c:2324
 __slab_free+0x2ac/0x370 mm/slub.c:2971
 qlist_free_all+0x4c/0xb0 mm/kasan/quarantine.c:167
 quarantine_reduce+0x174/0x190 mm/kasan/quarantine.c:260
 __kasan_kmalloc+0x43/0x1e0 mm/kasan/common.c:507
 slab_post_alloc_hook mm/slab.h:584 [inline]
 slab_alloc_node mm/slub.c:2829 [inline]
 slab_alloc mm/slub.c:2837 [inline]
 kmem_cache_alloc+0xd0/0x210 mm/slub.c:2842
 kmem_cache_alloc_node include/linux/slab.h:427 [inline]
 __alloc_skb+0x78/0x4d0 net/core/skbuff.c:198
 alloc_skb_fclone include/linux/skbuff.h:1110 [inline]
 sk_stream_alloc_skb+0x1ee/0xa80 net/ipv4/tcp.c:887
 tcp_sendmsg_locked+0xe3f/0x3780 net/ipv4/tcp.c:1296
 tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1446
 sock_sendmsg_nosec net/socket.c:638 [inline]
 sock_sendmsg net/socket.c:658 [inline]
 sock_write_iter+0x33f/0x460 net/socket.c:990
 call_write_iter include/linux/fs.h:1976 [inline]
 new_sync_write fs/read_write.c:483 [inline]
 __vfs_write+0x5e3/0x780 fs/read_write.c:496

Memory state around the buggy address:
 ffff8881ed262f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881ed262f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881ed263000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                         ^
 ffff8881ed263080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
 ffff8881ed263100: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
==================================================================
EXT4-fs error (device loop5): ext4_read_block_bitmap_nowait:430: comm syz-executor.5: Invalid block bitmap block 0 in block_group 0