ERROR: (device loop1): 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_one_qstr_excl+0x238/0x530 fs/namei.c:1607
 filename_create+0x2fc/0x6e0 fs/namei.c:3893
 do_mkdirat+0x69/0x810 fs/namei.c:4138
 __do_sys_mkdirat fs/namei.c:4161 [inline]
 __se_sys_mkdirat fs/namei.c:4159 [inline]
 __x64_sys_mkdirat+0xc8/0x120 fs/namei.c:4159
 x64_sys_call+0x28f5/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:259
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable btstack created at:
 jfs_lookup+0x44/0x510 fs/jfs/namei.c:1451
 lookup_one_qstr_excl+0x238/0x530 fs/namei.c:1607

CPU: 0 PID: 7864 Comm: syz-executor.1 Not tainted 6.9.0-rc7-syzkaller-00188-gba16c1cf11c9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
=====================================================