loop0: detected capacity change from 0 to 32768
ERROR: (device loop0): dtSearch: stack overrun!
ERROR: (device loop0): remounting filesystem as read-only
btstack dump:
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
=====================================================
BUG: KMSAN: uninit-value in BT_STACK_DUMP fs/jfs/jfs_btree.h:136 [inline]
BUG: KMSAN: uninit-value in dtSearch+0x4087/0x4140 fs/jfs/jfs_dtree.c:773
 BT_STACK_DUMP fs/jfs/jfs_btree.h:136 [inline]
 dtSearch+0x4087/0x4140 fs/jfs/jfs_dtree.c:773
 jfs_lookup+0x1a2/0x510 fs/jfs/namei.c:1461
 lookup_open fs/namei.c:3483 [inline]
 open_last_lookups fs/namei.c:3574 [inline]
 path_openat+0x27a9/0x5b00 fs/namei.c:3804
 do_filp_open+0x20e/0x590 fs/namei.c:3834
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1406
 do_sys_open fs/open.c:1421 [inline]
 __do_compat_sys_openat fs/open.c:1481 [inline]
 __se_compat_sys_openat fs/open.c:1479 [inline]
 __ia32_compat_sys_openat+0x298/0x300 fs/open.c:1479
 ia32_sys_call+0x38e1/0x40a0 arch/x86/include/generated/asm/syscalls_32.h:296
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb4/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Local variable btstack created at:
 jfs_lookup+0x44/0x510 fs/jfs/namei.c:1451
 lookup_open fs/namei.c:3483 [inline]
 open_last_lookups fs/namei.c:3574 [inline]
 path_openat+0x27a9/0x5b00 fs/namei.c:3804

CPU: 0 PID: 11168 Comm: syz-executor.0 Not tainted 6.9.0-syzkaller-02339-g101b7a97143a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
=====================================================