==================================================================
BUG: KASAN: slab-out-of-bounds in diWrite+0x928/0x11f0 fs/jfs/jfs_imap.c:753
Read of size 32 at addr ffff0000f52378b0 by task syz.4.83/4914

CPU: 0 PID: 4914 Comm: syz.4.83 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 print_address_description+0x88/0x220 mm/kasan/report.c:316
 print_report+0x50/0x68 mm/kasan/report.c:427
 kasan_report+0xa8/0x100 mm/kasan/report.c:531
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x260/0x2a0 mm/kasan/generic.c:189
 memcpy+0x48/0x90 mm/kasan/shadow.c:65
 diWrite+0x928/0x11f0 fs/jfs/jfs_imap.c:753
 txCommit+0x5d0/0x3bec fs/jfs/jfs_txnmgr.c:1255
 add_missing_indices+0x6e0/0x9f8 fs/jfs/jfs_dtree.c:2664
 jfs_readdir+0x184c/0x3148 fs/jfs/jfs_dtree.c:3020
 iterate_dir+0x1f0/0x4cc fs/readdir.c:-1
 __do_sys_getdents64 fs/readdir.c:369 [inline]
 __se_sys_getdents64 fs/readdir.c:354 [inline]
 __arm64_sys_getdents64+0x11c/0x318 fs/readdir.c:354
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

Allocated by task 4910:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x80 mm/kasan/common.c:52
 kasan_save_alloc_info+0x28/0x34 mm/kasan/generic.c:505
 __kasan_slab_alloc+0x70/0x88 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x74/0x43c mm/slab.h:737
 slab_alloc_node mm/slub.c:3398 [inline]
 slab_alloc mm/slub.c:3406 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3413 [inline]
 kmem_cache_alloc_lru+0x1b0/0x298 mm/slub.c:3429
 alloc_inode_sb include/linux/fs.h:3245 [inline]
 jfs_alloc_inode+0x2c/0x68 fs/jfs/super.c:105
 alloc_inode fs/inode.c:261 [inline]
 new_inode_pseudo+0x68/0x1cc fs/inode.c:1063
 new_inode+0x38/0x174 fs/inode.c:1091
 ialloc+0x54/0x7b0 fs/jfs/jfs_inode.c:48
 jfs_create+0x170/0x8c4 fs/jfs/namei.c:92
 lookup_open fs/namei.c:3482 [inline]
 open_last_lookups fs/namei.c:3550 [inline]
 path_openat+0x112c/0x2680 fs/namei.c:3780
 do_filp_open+0x174/0x344 fs/namei.c:3810
 do_sys_openat2+0x128/0x3d8 fs/open.c:1318
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __arm64_sys_openat+0x120/0x154 fs/open.c:1345
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

The buggy address belongs to the object at ffff0000f5236f00
 which belongs to the cache jfs_ip of size 2240
The buggy address is located 240 bytes to the right of
 2240-byte region [ffff0000f5236f00, ffff0000f52377c0)

The buggy address belongs to the physical page:
page:0000000099e30411 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000f5230000 pfn:0x135230
head:0000000099e30411 order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff0000f5e3b001
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c6f91080
raw: ffff0000f5230000 00000000800d0007 00000001ffffffff ffff0000f5e3b001
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000f5237780: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
 ffff0000f5237800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000f5237880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                     ^
 ffff0000f5237900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000f5237980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

 ... Log Wrap ... Log Wrap ... Log Wrap ...


 ... Log Wrap ... Log Wrap ... Log Wrap ...


 ... Log Wrap ... Log Wrap ... Log Wrap ...

ERROR: (device loop4): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0

JFS: Invalid stbl[1] = -128 for inode 2, block = 0