loop0: detected capacity change from 0 to 32768
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:2892:30
index -1 is out of range for type 'struct dtslot[128]'
CPU: 0 PID: 6161 Comm: syz-executor386 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_out_of_bounds+0xf8/0x148 lib/ubsan.c:347
 jfs_readdir+0x1580/0x37bc fs/jfs/jfs_dtree.c:2892
 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67
 shared_jfs_readdir+0x30/0x40 fs/jfs/namei.c:1540
 iterate_dir+0x3f8/0x580 fs/readdir.c:110
 __do_sys_getdents64 fs/readdir.c:409 [inline]
 __se_sys_getdents64 fs/readdir.c:394 [inline]
 __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:394
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
---[ end trace ]---
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:2647:28
index -1 is out of range for type 'struct dtslot[128]'
CPU: 0 PID: 6161 Comm: syz-executor386 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_out_of_bounds+0xf8/0x148 lib/ubsan.c:347
 add_missing_indices fs/jfs/jfs_dtree.c:2647 [inline]
 jfs_readdir+0x1dfc/0x37bc fs/jfs/jfs_dtree.c:3009
 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67
 shared_jfs_readdir+0x30/0x40 fs/jfs/namei.c:1540
 iterate_dir+0x3f8/0x580 fs/readdir.c:110
 __do_sys_getdents64 fs/readdir.c:409 [inline]
 __se_sys_getdents64 fs/readdir.c:394 [inline]
 __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:394
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
---[ end trace ]---
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:750:12
index 255 is out of range for type 'struct dtslot[128]'
CPU: 0 PID: 6161 Comm: syz-executor386 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_out_of_bounds+0xf8/0x148 lib/ubsan.c:347
 diWrite+0xbcc/0x15cc fs/jfs/jfs_imap.c:750
 txCommit+0x750/0x5438 fs/jfs/jfs_txnmgr.c:1255
 add_missing_indices fs/jfs/jfs_dtree.c:2661 [inline]
 jfs_readdir+0x1e80/0x37bc fs/jfs/jfs_dtree.c:3009
 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67
 shared_jfs_readdir+0x30/0x40 fs/jfs/namei.c:1540
 iterate_dir+0x3f8/0x580 fs/readdir.c:110
 __do_sys_getdents64 fs/readdir.c:409 [inline]
 __se_sys_getdents64 fs/readdir.c:394 [inline]
 __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:394
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
---[ end trace ]---
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:750:35
index 255 is out of range for type 'struct dtslot[128]'
CPU: 0 PID: 6161 Comm: syz-executor386 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_out_of_bounds+0xf8/0x148 lib/ubsan.c:347
 diWrite+0xc24/0x15cc fs/jfs/jfs_imap.c:750
 txCommit+0x750/0x5438 fs/jfs/jfs_txnmgr.c:1255
 add_missing_indices fs/jfs/jfs_dtree.c:2661 [inline]
 jfs_readdir+0x1e80/0x37bc fs/jfs/jfs_dtree.c:3009
 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67
 shared_jfs_readdir+0x30/0x40 fs/jfs/namei.c:1540
 iterate_dir+0x3f8/0x580 fs/readdir.c:110
 __do_sys_getdents64 fs/readdir.c:409 [inline]
 __se_sys_getdents64 fs/readdir.c:394 [inline]
 __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:394
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
---[ end trace ]---
==================================================================
BUG: KASAN: slab-out-of-bounds in diWrite+0xb48/0x15cc fs/jfs/jfs_imap.c:750
Read of size 32 at addr ffff0000dbbc5110 by task syz-executor386/6161

CPU: 0 PID: 6161 Comm: syz-executor386 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x178/0x518 mm/kasan/report.c:488
 kasan_report+0xd8/0x138 mm/kasan/report.c:601
 kasan_check_range+0x254/0x294 mm/kasan/generic.c:189
 __asan_memcpy+0x3c/0x84 mm/kasan/shadow.c:105
 diWrite+0xb48/0x15cc fs/jfs/jfs_imap.c:750
 txCommit+0x750/0x5438 fs/jfs/jfs_txnmgr.c:1255
 add_missing_indices fs/jfs/jfs_dtree.c:2661 [inline]
 jfs_readdir+0x1e80/0x37bc fs/jfs/jfs_dtree.c:3009
 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67
 shared_jfs_readdir+0x30/0x40 fs/jfs/namei.c:1540
 iterate_dir+0x3f8/0x580 fs/readdir.c:110
 __do_sys_getdents64 fs/readdir.c:409 [inline]
 __se_sys_getdents64 fs/readdir.c:394 [inline]
 __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:394
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

The buggy address belongs to the object at ffff0000dbbc4a00
 which belongs to the cache jfs_ip of size 2240
The buggy address is located 1808 bytes inside of
 allocated 2240-byte region [ffff0000dbbc4a00, ffff0000dbbc52c0)

The buggy address belongs to the physical page:
page:000000005a8caa7a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11bbc0
head:000000005a8caa7a order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x5ffc00000000840(slab|head|node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000000840 ffff0000c4470280 dead000000000122 0000000000000000
raw: 0000000000000000 00000000800d000d 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000dbbc5000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000dbbc5080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000dbbc5100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                         ^
 ffff0000dbbc5180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000dbbc5200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0

ERROR: (device loop0): remounting filesystem as read-only
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 1

ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 2

ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 3

ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 4