------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:3700:8
index -1 is out of range for type 'struct dtslot[128]'
CPU: 0 UID: 0 PID: 6788 Comm: syz.4.28 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 ubsan_epilogue+0x14/0x48 lib/ubsan.c:233
 __ubsan_handle_out_of_bounds+0xd0/0xfc lib/ubsan.c:455
 dtInsertEntry+0x77c/0x106c fs/jfs/jfs_dtree.c:3700
 dtSplitPage+0x1f24/0x2cbc fs/jfs/jfs_dtree.c:1596
 dtSplitUp fs/jfs/jfs_dtree.c:1092 [inline]
 dtInsert+0xccc/0x49c0 fs/jfs/jfs_dtree.c:871
 jfs_symlink+0x66c/0xd54 fs/jfs/namei.c:1020
 vfs_symlink+0x138/0x288 fs/namei.c:4730
 do_symlinkat+0x17c/0x360 fs/namei.c:4756
 __do_sys_symlinkat fs/namei.c:4772 [inline]
 __se_sys_symlinkat fs/namei.c:4769 [inline]
 __arm64_sys_symlinkat+0x9c/0xb4 fs/namei.c:4769
 __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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
---[ end trace ]---
read_mapping_page failed!
ERROR: (device loop4): txAbort: 

MetaData crosses page boundary!!
lblock = 66fa04, size  = 143360
CPU: 0 UID: 0 PID: 6788 Comm: syz.4.28 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 __get_metapage+0x9a8/0xe8c fs/jfs/jfs_metapage.c:705
 dtSearch+0x50c/0x1d00 fs/jfs/jfs_dtree.c:624
 jfs_lookup+0x13c/0x32c fs/jfs/namei.c:1461
 lookup_open fs/namei.c:3686 [inline]
 open_last_lookups fs/namei.c:3807 [inline]
 path_openat+0xcc0/0x2c40 fs/namei.c:4043
 do_filp_open+0x18c/0x36c fs/namei.c:4073
 do_sys_openat2+0x11c/0x1b4 fs/open.c:1435
 do_sys_open fs/open.c:1450 [inline]
 __do_sys_openat fs/open.c:1466 [inline]
 __se_sys_openat fs/open.c:1461 [inline]
 __arm64_sys_openat+0x120/0x158 fs/open.c:1461
 __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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
bread failed!
jfs_lookup: dtSearch returned -5
MetaData crosses page boundary!!
lblock = 66fa04, size  = 143360
CPU: 0 UID: 0 PID: 6788 Comm: syz.4.28 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 __get_metapage+0x9a8/0xe8c fs/jfs/jfs_metapage.c:705
 dtSearch+0x50c/0x1d00 fs/jfs/jfs_dtree.c:624
 jfs_lookup+0x13c/0x32c fs/jfs/namei.c:1461
 lookup_one_qstr_excl+0x10c/0x2fc fs/namei.c:1697
 filename_create+0x1cc/0x32c fs/namei.c:4140
 do_mkdirat+0xa8/0x4c8 fs/namei.c:4391
 __do_sys_mkdirat fs/namei.c:4416 [inline]
 __se_sys_mkdirat fs/namei.c:4414 [inline]
 __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4414
 __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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
bread failed!
jfs_lookup: dtSearch returned -5
MetaData crosses page boundary!!
lblock = 66fa04, size  = 143360
CPU: 0 UID: 0 PID: 6788 Comm: syz.4.28 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 __get_metapage+0x9a8/0xe8c fs/jfs/jfs_metapage.c:705
 dtSearch+0x50c/0x1d00 fs/jfs/jfs_dtree.c:624
 jfs_lookup+0x13c/0x32c fs/jfs/namei.c:1461
 __lookup_slow+0x254/0x378 fs/namei.c:1808
 lookup_slow+0x5c/0x80 fs/namei.c:1825
 walk_component fs/namei.c:2129 [inline]
 link_path_walk+0x790/0xc98 fs/namei.c:2497
 path_parentat fs/namei.c:2701 [inline]
 __filename_parentat+0x1c8/0x544 fs/namei.c:2725
 filename_parentat fs/namei.c:2743 [inline]
 do_renameat2+0x204/0x8c8 fs/namei.c:5201
 __do_sys_renameat2 fs/namei.c:5312 [inline]
 __se_sys_renameat2 fs/namei.c:5309 [inline]
 __arm64_sys_renameat2+0xd8/0xf4 fs/namei.c:5309
 __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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
bread failed!
jfs_lookup: dtSearch returned -5