loop0: detected capacity change from 0 to 32768
==================================================================
BUG: KASAN: slab-use-after-free in jfs_readdir+0x1358/0x4660 fs/jfs/jfs_dtree.c:2869
Read of size 8 at addr ffff88807d877410 by task syz.0.191/6531

CPU: 0 UID: 0 PID: 6531 Comm: syz.0.191 Not tainted 6.12.0-rc5-syzkaller-00181-g6c52d4da1c74 #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+0x241/0x360 lib/dump_stack.c:120
 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
 jfs_readdir+0x1358/0x4660 fs/jfs/jfs_dtree.c:2869
 wrap_directory_iterator+0x93/0xd0 fs/readdir.c:65
 iterate_dir+0x573/0x800 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: 0033:0x7ffa8c57e719
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:00007ffa8d326038 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007ffa8c735f80 RCX: 00007ffa8c57e719
RDX: 0000000000000058 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007ffa8c5f132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffa8c735f80 R15: 00007ffd8b5e63a8
 </TASK>

Allocated by task 6531:
 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:319 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:247 [inline]
 slab_post_alloc_hook mm/slub.c:4085 [inline]
 slab_alloc_node mm/slub.c:4134 [inline]
 kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4141
 mempool_alloc_noprof+0x199/0x5a0 mm/mempool.c:402
 alloc_metapage fs/jfs/jfs_metapage.c:182 [inline]
 __get_metapage+0x4ed/0xef0 fs/jfs/jfs_metapage.c:652
 dtSplitRoot+0x2af/0x1930 fs/jfs/jfs_dtree.c:1909
 dtSplitUp fs/jfs/jfs_dtree.c:992 [inline]
 dtInsert+0x12cd/0x6c10 fs/jfs/jfs_dtree.c:870
 jfs_rename+0xafe/0x1bf0 fs/jfs/namei.c:1225
 vfs_rename+0xbdd/0xf00 fs/namei.c:5013
 do_renameat2+0xd94/0x13f0 fs/namei.c:5170
 __do_sys_rename fs/namei.c:5217 [inline]
 __se_sys_rename fs/namei.c:5215 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5215
 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

Freed by task 6531:
 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 mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:2342 [inline]
 slab_free mm/slub.c:4579 [inline]
 kmem_cache_free+0x1a2/0x420 mm/slub.c:4681
 free_metapage fs/jfs/jfs_metapage.c:197 [inline]
 drop_metapage fs/jfs/jfs_metapage.c:234 [inline]
 release_metapage+0x725/0x960 fs/jfs/jfs_metapage.c:784
 dtReadNext fs/jfs/jfs_dtree.c:3174 [inline]
 jfs_readdir+0x1022/0x4660 fs/jfs/jfs_dtree.c:2862
 wrap_directory_iterator+0x93/0xd0 fs/readdir.c:65
 iterate_dir+0x573/0x800 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

The buggy address belongs to the object at ffff88807d8773e0
 which belongs to the cache jfs_mp of size 184
The buggy address is located 48 bytes inside of
 freed 184-byte region [ffff88807d8773e0, ffff88807d877498)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7d877
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff888147af2140 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080100010 00000001f5000000 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 0xd2800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 6531, tgid 6529 (syz.0.191), ts 110004323309, free_ts 109864880819
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537
 prep_new_page mm/page_alloc.c:1545 [inline]
 get_page_from_freelist+0x303f/0x3190 mm/page_alloc.c:3457
 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4733
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
 alloc_slab_page+0x6a/0x120 mm/slub.c:2412
 allocate_slab+0x5a/0x2f0 mm/slub.c:2578
 new_slab mm/slub.c:2631 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3818
 __slab_alloc+0x58/0xa0 mm/slub.c:3908
 __slab_alloc_node mm/slub.c:3961 [inline]
 slab_alloc_node mm/slub.c:4122 [inline]
 kmem_cache_alloc_noprof+0x1c1/0x2a0 mm/slub.c:4141
 mempool_alloc_noprof+0x199/0x5a0 mm/mempool.c:402
 alloc_metapage fs/jfs/jfs_metapage.c:182 [inline]
 __get_metapage+0x4ed/0xef0 fs/jfs/jfs_metapage.c:652
 diRead+0x715/0xbc0 fs/jfs/jfs_imap.c:367
 jfs_iget+0x86/0x3e0 fs/jfs/inode.c:35
 jfs_fill_super+0x808/0xc50 fs/jfs/super.c:580
 mount_bdev+0x20c/0x2d0 fs/super.c:1679
 legacy_get_tree+0xf0/0x190 fs/fs_context.c:662
page last free pid 6531 tgid 6529 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1108 [inline]
 free_unref_folios+0xf12/0x18d0 mm/page_alloc.c:2686
 folios_put_refs+0x76c/0x860 mm/swap.c:1007
 free_pages_and_swap_cache+0x2ea/0x690 mm/swap_state.c:332
 __tlb_batch_free_encoded_pages mm/mmu_gather.c:136 [inline]
 tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:366 [inline]
 tlb_flush_mmu+0x3a3/0x680 mm/mmu_gather.c:373
 tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:465
 vms_clear_ptes+0x437/0x530 mm/vma.c:1103
 vms_complete_munmap_vmas+0x208/0x910 mm/vma.c:1147
 do_vmi_align_munmap+0x613/0x730 mm/vma.c:1356
 do_vmi_munmap+0x24e/0x2d0 mm/vma.c:1404
 __vm_munmap+0x24c/0x480 mm/mmap.c:1612
 __do_sys_munmap mm/mmap.c:1629 [inline]
 __se_sys_munmap mm/mmap.c:1626 [inline]
 __x64_sys_munmap+0x60/0x70 mm/mmap.c:1626
 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:
 ffff88807d877300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88807d877380: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb
>ffff88807d877400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                         ^
 ffff88807d877480: fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00
 ffff88807d877500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================