... Log Wrap ... Log Wrap ... Log Wrap ...
==================================================================
BUG: KASAN: slab-out-of-bounds in add_missing_indices+0x660/0xa0c fs/jfs/jfs_dtree.c:2947
Read of size 4 at addr ffff0000de28730c by task syz.7.462/6608

CPU: 0 PID: 6608 Comm: syz.7.462 Not tainted 5.15.184-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call trace:
 dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 print_address_description+0x78/0x30c mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xec/0x15c mm/kasan/report.c:451
 __asan_report_load4_noabort+0x44/0x50 mm/kasan/report_generic.c:308
 add_missing_indices+0x660/0xa0c fs/jfs/jfs_dtree.c:2947
 jfs_readdir+0x1880/0x3024 fs/jfs/jfs_dtree.c:3316
 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/0x340 fs/readdir.c:354
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Allocated by task 0:
(stack is not available)

The buggy address belongs to the object at ffff0000de286ce8
 which belongs to the cache nilfs2_inode_cache of size 1512
The buggy address is located 60 bytes to the right of
 1512-byte region [ffff0000de286ce8, ffff0000de2872d0)
The buggy address belongs to the page:
page:00000000dc4376e7 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000de280000 pfn:0x11e280
head:00000000dc4376e7 order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff0000c2033e01
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c6d06600
raw: ffff0000de280000 000000008013000b 00000001ffffffff ffff0000c2033e01
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000de287200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000de287280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000de287300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                      ^
 ffff0000de287380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000de287400: 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 loop7): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0

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