read_mapping_page failed!
ERROR: (device loop8): txAbort: 
==================================================================
BUG: KASAN: slab-out-of-bounds in jfs_readdir+0x14a0/0x2fec fs/jfs/jfs_dtree.c:2919
Read of size 4 at addr ffff0000dca99b3c by task syz.8.222/8348

CPU: 1 UID: 0 PID: 8348 Comm: syz.8.222 Not tainted 6.15.0-rc4-syzkaller-ge0f4c8dd9d2d #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 print_address_description+0xa8/0x254 mm/kasan/report.c:408
 print_report+0x68/0x84 mm/kasan/report.c:521
 kasan_report+0xb0/0x110 mm/kasan/report.c:634
 __asan_report_load4_noabort+0x20/0x2c mm/kasan/report_generic.c:380
 jfs_readdir+0x14a0/0x2fec fs/jfs/jfs_dtree.c:2919
 wrap_directory_iterator+0x90/0xf0 fs/readdir.c:65
 shared_jfs_readdir+0x30/0x40 fs/jfs/namei.c:1540
 iterate_dir+0x458/0x5e0 fs/readdir.c:108
 __do_sys_getdents64 fs/readdir.c:403 [inline]
 __se_sys_getdents64 fs/readdir.c:389 [inline]
 __arm64_sys_getdents64+0x114/0x2fc fs/readdir.c:389
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

Allocated by task 8316:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:562
 unpoison_slab_object mm/kasan/common.c:319 [inline]
 __kasan_slab_alloc+0x70/0x88 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4161 [inline]
 slab_alloc_node mm/slub.c:4210 [inline]
 kmem_cache_alloc_lru_noprof+0x23c/0x3ec mm/slub.c:4229
 jfs_alloc_inode+0x2c/0x68 fs/jfs/super.c:105
 alloc_inode+0x68/0x19c fs/inode.c:346
 iget_locked+0x168/0x7b0 fs/inode.c:1439
 jfs_iget+0x30/0x388 fs/jfs/inode.c:29
 jfs_lookup+0x198/0x32c fs/jfs/namei.c:1469
 __lookup_slow+0x254/0x378 fs/namei.c:1817
 lookup_slow+0x5c/0x80 fs/namei.c:1834
 walk_component+0x270/0x364 fs/namei.c:2138
 lookup_last fs/namei.c:2636 [inline]
 path_lookupat+0x13c/0x3d0 fs/namei.c:2660
 filename_lookup+0x1ac/0x454 fs/namei.c:2689
 user_path_at+0x50/0x74 fs/namei.c:3120
 __do_sys_chdir fs/open.c:557 [inline]
 __se_sys_chdir fs/open.c:551 [inline]
 __arm64_sys_chdir+0xb0/0x274 fs/open.c:551
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

The buggy address belongs to the object at ffff0000dca99270
 which belongs to the cache jfs_ip of size 2232
The buggy address is located 20 bytes to the right of
 allocated 2232-byte region [ffff0000dca99270, ffff0000dca99b28)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11ca98
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff0000f3507b01
flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 05ffc00000000040 ffff0000c4848780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000800d000d 00000000f5000000 ffff0000f3507b01
head: 05ffc00000000040 ffff0000c4848780 dead000000000122 0000000000000000
head: 0000000000000000 00000000800d000d 00000000f5000000 ffff0000f3507b01
head: 05ffc00000000003 fffffdffc372a601 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000dca99a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000dca99a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000dca99b00: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc
                                        ^
 ffff0000dca99b80: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb
 ffff0000dca99c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
read_mapping_page failed!
ERROR: (device loop8): txAbort: 

ERROR: (device loop8): jfs_readdir: JFS:Dtree error: ino = 32, bn=0, index = 0