================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_xtree.c:2304:9
index 19 is out of range for type 'xad_t[18]' (aka 'struct xad[18]')
CPU: 1 PID: 22296 Comm: syz-executor.0 Not tainted 6.3.0-rc2-syzkaller-00363-g478a351ce0d6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_out_of_bounds+0x11c/0x150 lib/ubsan.c:348
 xtTruncate+0x2734/0x3260 fs/jfs/jfs_xtree.c:2304
 jfs_truncate_nolock+0x188/0x390 fs/jfs/inode.c:388
 jfs_truncate fs/jfs/inode.c:412 [inline]
 jfs_write_failed+0x11a/0x190 fs/jfs/inode.c:289
 jfs_write_end+0x63/0x80 fs/jfs/inode.c:314
 generic_perform_write+0x3ed/0x5e0 mm/filemap.c:3937
 __generic_file_write_iter+0x17a/0x400 mm/filemap.c:4054
 generic_file_write_iter+0xaf/0x310 mm/filemap.c:4086
 call_write_iter include/linux/fs.h:1851 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x7b2/0xbb0 fs/read_write.c:584
 ksys_write+0x1a0/0x2c0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb96f68c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007fb970487168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb96f7abf80 RCX: 00007fb96f68c0f9
RDX: 00000000200000c7 RSI: 00000000200000c0 RDI: 0000000000000004
RBP: 00007fb96f6e7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdbd22eeff R14: 00007fb970487300 R15: 0000000000022000
 </TASK>
================================================================================
================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_xtree.c:2334:10
index 19 is out of range for type 'xad_t[18]' (aka 'struct xad[18]')