ERROR: (device loop4): remounting filesystem as read-only
btstack dump:
bn = 0, index = 4
bn = 0, index = 4
bn = 0, index = 4
bn = 0, index = 4
bn = 0, index = 4
bn = 0, index = 4
bn = 0, index = 4
=====================================================
BUG: KMSAN: uninit-value in BT_STACK_DUMP+0x5e5/0x600 fs/jfs/jfs_btree.h:136
 BT_STACK_DUMP+0x5e5/0x600 fs/jfs/jfs_btree.h:136
 dtSearch+0x3961/0x3d40 fs/jfs/jfs_dtree.c:774
 jfs_lookup+0x179/0x590 fs/jfs/namei.c:1464
 __lookup_slow+0x56a/0x770 fs/namei.c:1916
 lookup_slow+0x6a/0xd0 fs/namei.c:1933
 walk_component fs/namei.c:2279 [inline]
 lookup_last fs/namei.c:2780 [inline]
 path_lookupat+0x7d1/0xdf0 fs/namei.c:2804
 do_o_path+0x58/0x290 fs/namei.c:4801
 path_openat+0x493e/0x64c0 fs/namei.c:4823
 do_file_open+0x2aa/0x680 fs/namei.c:4859
 do_sys_openat2+0x163/0x380 fs/open.c:1366
 do_sys_open fs/open.c:1372 [inline]
 __do_compat_sys_openat fs/open.c:1434 [inline]
 __se_compat_sys_openat fs/open.c:1432 [inline]
 __ia32_compat_sys_openat+0x238/0x300 fs/open.c:1432
 ia32_sys_call+0x330b/0x4360 arch/x86/include/generated/asm/syscalls_32.h:296
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x17f/0x3f0 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/syscall_32.c:332
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:370
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Local variable btstack created at:
 jfs_lookup+0x44/0x590 fs/jfs/namei.c:1454
 __lookup_slow+0x56a/0x770 fs/namei.c:1916

CPU: 1 UID: 0 PID: 13607 Comm: syz.4.2198 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
=====================================================