loop3: detected capacity change from 512 to 511
==================================================================
BUG: KASAN: slab-use-after-free in ext4_read_inline_data fs/ext4/inline.c:209 [inline]
BUG: KASAN: slab-use-after-free in ext4_inlinedir_to_tree+0x57a/0x11d0 fs/ext4/inline.c:1365
Read of size 296 at addr ffff888032afb805 by task syz.3.192/7141

CPU: 0 UID: 0 PID: 7141 Comm: syz.3.192 Not tainted 6.11.0-rc6-syzkaller-00026-g88fac17500f4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105
 ext4_read_inline_data fs/ext4/inline.c:209 [inline]
 ext4_inlinedir_to_tree+0x57a/0x11d0 fs/ext4/inline.c:1365
 ext4_htree_fill_tree+0x5d8/0x1400 fs/ext4/namei.c:1211
 ext4_dx_readdir fs/ext4/dir.c:597 [inline]
 ext4_readdir+0x2b1c/0x3500 fs/ext4/dir.c:142
 iterate_dir+0x57a/0x810 fs/readdir.c:108
 __do_sys_getdents fs/readdir.c:324 [inline]
 __se_sys_getdents+0x1ef/0x4d0 fs/readdir.c:309
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1b2537cef9
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:00007f1b261a3038 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007f1b25535f80 RCX: 00007f1b2537cef9
RDX: 0000000000000058 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007f1b253ef01e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1b25535f80 R15: 00007ffc9b67ff78
 </TASK>

Allocated by task 12:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3988 [inline]
 slab_alloc_node mm/slub.c:4037 [inline]
 kmem_cache_alloc_node_noprof+0x16b/0x320 mm/slub.c:4080
 __alloc_skb+0x1c3/0x440 net/core/skbuff.c:664
 alloc_skb include/linux/skbuff.h:1320 [inline]
 nlmsg_new include/net/netlink.h:1015 [inline]
 __neigh_notify+0x81/0x140 net/core/neighbour.c:3519
 neigh_cleanup_and_release+0xb7/0x2a0 net/core/neighbour.c:101
 neigh_flush_dev+0x188/0xaf0 net/core/neighbour.c:429
 __neigh_ifdown+0x45/0x400 net/core/neighbour.c:446
 neigh_carrier_down+0x22/0x30 net/core/neighbour.c:457
 ndisc_netdev_event+0x401/0x4e0 net/ipv6/ndisc.c:1919
 notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93
 netdev_state_change+0x11f/0x1a0 net/core/dev.c:1376
 linkwatch_do_dev+0x112/0x170 net/core/link_watch.c:177
 __linkwatch_run_queue+0x44f/0x6c0 net/core/link_watch.c:234
 linkwatch_event+0x4c/0x60 net/core/link_watch.c:277
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Freed by task 12:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2252 [inline]
 slab_free mm/slub.c:4473 [inline]
 kmem_cache_free+0x145/0x350 mm/slub.c:4548
 netlink_broadcast_filtered+0x116d/0x12a0 net/netlink/af_netlink.c:1542
 nlmsg_multicast_filtered include/net/netlink.h:1125 [inline]
 nlmsg_multicast include/net/netlink.h:1144 [inline]
 nlmsg_notify+0xfb/0x1c0 net/netlink/af_netlink.c:2593
 neigh_cleanup_and_release+0xb7/0x2a0 net/core/neighbour.c:101
 neigh_flush_dev+0x188/0xaf0 net/core/neighbour.c:429
 __neigh_ifdown+0x45/0x400 net/core/neighbour.c:446
 neigh_carrier_down+0x22/0x30 net/core/neighbour.c:457
 ndisc_netdev_event+0x401/0x4e0 net/ipv6/ndisc.c:1919
 notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93
 netdev_state_change+0x11f/0x1a0 net/core/dev.c:1376
 linkwatch_do_dev+0x112/0x170 net/core/link_watch.c:177
 __linkwatch_run_queue+0x44f/0x6c0 net/core/link_watch.c:234
 linkwatch_event+0x4c/0x60 net/core/link_watch.c:277
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

The buggy address belongs to the object at ffff888032afb780
 which belongs to the cache skbuff_head_cache of size 240
The buggy address is located 133 bytes inside of
 freed 240-byte region [ffff888032afb780, ffff888032afb870)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x32afb
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfdffffff(slab)
raw: 00fff00000000000 ffff88801e6a5780 ffffea0000931300 0000000000000002
raw: 0000000000000000 00000000000c000c 00000001fdffffff 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 0x152820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 5231, tgid 5231 (kworker/0:3), ts 191671985757, free_ts 191649300356
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493
 prep_new_page mm/page_alloc.c:1501 [inline]
 get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3439
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4695
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
 alloc_slab_page+0x5f/0x120 mm/slub.c:2321
 allocate_slab+0x5a/0x2f0 mm/slub.c:2484
 new_slab mm/slub.c:2537 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3723
 __slab_alloc+0x58/0xa0 mm/slub.c:3813
 __slab_alloc_node mm/slub.c:3866 [inline]
 slab_alloc_node mm/slub.c:4025 [inline]
 kmem_cache_alloc_node_noprof+0x1fe/0x320 mm/slub.c:4080
 __alloc_skb+0x1c3/0x440 net/core/skbuff.c:664
 alloc_skb include/linux/skbuff.h:1320 [inline]
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:748 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
 nsim_dev_trap_report_work+0x254/0xaa0 drivers/net/netdevsim/dev.c:850
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
page last free pid 6921 tgid 6919 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1094 [inline]
 free_unref_folios+0x100f/0x1ac0 mm/page_alloc.c:2660
 folios_put_refs+0x76e/0x860 mm/swap.c:1039
 folio_batch_release include/linux/pagevec.h:101 [inline]
 mapping_try_invalidate+0x3b1/0x4f0 mm/truncate.c:515
 open_ctree+0xad5/0x2a10 fs/btrfs/disk-io.c:3241
 btrfs_fill_super fs/btrfs/super.c:965 [inline]
 btrfs_get_tree_super fs/btrfs/super.c:1888 [inline]
 btrfs_get_tree+0xe7a/0x1920 fs/btrfs/super.c:2114
 vfs_get_tree+0x90/0x2b0 fs/super.c:1800
 fc_mount+0x1b/0xb0 fs/namespace.c:1231
 btrfs_get_tree_subvol fs/btrfs/super.c:2077 [inline]
 btrfs_get_tree+0x652/0x1920 fs/btrfs/super.c:2115
 vfs_get_tree+0x90/0x2b0 fs/super.c:1800
 do_new_mount+0x2be/0xb40 fs/namespace.c:3472
 do_mount fs/namespace.c:3812 [inline]
 __do_sys_mount fs/namespace.c:4020 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3997
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888032afb700: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
 ffff888032afb780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888032afb800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
                   ^
 ffff888032afb880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
 ffff888032afb900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================