metapage_write_end_io: I/O error blkno = 8ed2c, nblocks = 1 ERROR: (device loop0): dbUpdatePMap: blocks are outside the map ERROR: (device loop0): remounting filesystem as read-only blkno = 8ed2c, nblocks = 1 ERROR: (device loop0): dbUpdatePMap: blocks are outside the map UFO tlock:0xffffc900027c2090 ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:3392:10 index 237 is out of range for type 'struct dtslot[128]' CPU: 0 PID: 4162 Comm: syz-executor278 Not tainted 5.15.176-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0x118/0x140 lib/ubsan.c:282 dtReadFirst+0x622/0xc40 fs/jfs/jfs_dtree.c:3392 dtReadNext fs/jfs/jfs_dtree.c:3443 [inline] jfs_readdir+0x9a4/0x3bc0 fs/jfs/jfs_dtree.c:3158 iterate_dir+0x224/0x570 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f674b6c0c39 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff9a98fd48 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007fff9a98fd50 RCX: 00007f674b6c0c39 RDX: 0000000000000ff9 RSI: 0000000020001280 RDI: 0000000000000004 RBP: 00007fff9a98fd58 R08: 00007f674b68cbc0 R09: 00007f674b68cbc0 R10: 00007fff9a98fd58 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff9a98ffb8 R14: 0000000000000001 R15: 0000000000000001 ================================================================================