loop0: detected capacity change from 0 to 32768
================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:2360:2
index 134217728 is out of range for type 'struct iagctl[128]'
CPU: 1 PID: 6094 Comm: syz-executor537 Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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+0xfc/0x148 lib/ubsan.c:348
 diNewExt+0x280c/0x2b44 fs/jfs/jfs_imap.c:2360
 diAllocExt fs/jfs/jfs_imap.c:1949 [inline]
 diAllocAG+0xa68/0x1b8c fs/jfs/jfs_imap.c:1666
 diAlloc+0x17c/0x15c4 fs/jfs/jfs_imap.c:1587
 ialloc+0x84/0x78c fs/jfs/jfs_inode.c:56
 jfs_mkdir+0x190/0x9f4 fs/jfs/namei.c:225
 vfs_mkdir+0x27c/0x3e4 fs/namei.c:4106
 do_mkdirat+0x248/0x574 fs/namei.c:4129
 __do_sys_mkdirat fs/namei.c:4144 [inline]
 __se_sys_mkdirat fs/namei.c:4142 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4142
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595
================================================================================
==================================================================
BUG: KASAN: use-after-free in diNewExt+0x2af0/0x2b44 fs/jfs/jfs_imap.c:2360
Read of size 4 at addr ffff00015216802c by task syz-executor537/6094

CPU: 1 PID: 6094 Comm: syz-executor537 Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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:364 [inline]
 print_report+0x174/0x514 mm/kasan/report.c:475
 kasan_report+0xd8/0x138 mm/kasan/report.c:588
 __asan_report_load4_noabort+0x20/0x2c mm/kasan/report_generic.c:380
 diNewExt+0x2af0/0x2b44 fs/jfs/jfs_imap.c:2360
 diAllocExt fs/jfs/jfs_imap.c:1949 [inline]
 diAllocAG+0xa68/0x1b8c fs/jfs/jfs_imap.c:1666
 diAlloc+0x17c/0x15c4 fs/jfs/jfs_imap.c:1587
 ialloc+0x84/0x78c fs/jfs/jfs_inode.c:56
 jfs_mkdir+0x190/0x9f4 fs/jfs/namei.c:225
 vfs_mkdir+0x27c/0x3e4 fs/namei.c:4106
 do_mkdirat+0x248/0x574 fs/namei.c:4129
 __do_sys_mkdirat fs/namei.c:4144 [inline]
 __se_sys_mkdirat fs/namei.c:4142 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4142
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

The buggy address belongs to the physical page:
page:00000000d9c30e88 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x192168
flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000000000 fffffc0005485a08 fffffc0005485a08 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff000152167f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff000152167f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff000152168000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                  ^
 ffff000152168080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff000152168100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:2361:2
index 134217728 is out of range for type 'struct iagctl[128]'
CPU: 1 PID: 6094 Comm: syz-executor537 Tainted: G    B              6.7.0-rc8-syzkaller-g0802e17d9aca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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+0xfc/0x148 lib/ubsan.c:348
 diNewExt+0x2840/0x2b44 fs/jfs/jfs_imap.c:2361
 diAllocExt fs/jfs/jfs_imap.c:1949 [inline]
 diAllocAG+0xa68/0x1b8c fs/jfs/jfs_imap.c:1666
 diAlloc+0x17c/0x15c4 fs/jfs/jfs_imap.c:1587
 ialloc+0x84/0x78c fs/jfs/jfs_inode.c:56
 jfs_mkdir+0x190/0x9f4 fs/jfs/namei.c:225
 vfs_mkdir+0x27c/0x3e4 fs/namei.c:4106
 do_mkdirat+0x248/0x574 fs/namei.c:4129
 __do_sys_mkdirat fs/namei.c:4144 [inline]
 __se_sys_mkdirat fs/namei.c:4142 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4142
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136