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UBSAN: array-index-out-of-bounds in fs/jfs/jfs_xtree.c:360:4
index 19 is out of range for type 'xad_t[18]' (aka 'struct xad[18]')
CPU: 1 PID: 18926 Comm: syz-executor.3 Not tainted 6.4.0-rc4-syzkaller-00051-g48b1320a674e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
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
 xtSearch+0x6dc/0x1ca0 fs/jfs/jfs_xtree.c:360
 xtLookup+0x2c4/0x8e0 fs/jfs/jfs_xtree.c:152
 jfs_get_block+0x2e9/0xe60 fs/jfs/inode.c:218
 do_mpage_readpage+0x911/0x1fa0 fs/mpage.c:234
 mpage_readahead+0x454/0x930 fs/mpage.c:382
 read_pages+0x183/0x830 mm/readahead.c:161
 page_cache_ra_unbounded+0x697/0x7c0 mm/readahead.c:270
 filemap_readahead mm/filemap.c:2570 [inline]
 filemap_get_pages+0x742/0x20c0 mm/filemap.c:2611
 filemap_read+0x45a/0x1170 mm/filemap.c:2690
 call_read_iter include/linux/fs.h:1862 [inline]
 generic_file_splice_read+0x240/0x640 fs/splice.c:419
 do_splice_to fs/splice.c:902 [inline]
 splice_direct_to_actor+0x40c/0xbd0 fs/splice.c:973
 do_splice_direct+0x283/0x3d0 fs/splice.c:1082
 do_sendfile+0x620/0xff0 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
 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: 0033:0x7f2b6f88c169
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:00007f2b70582168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f2b6f9abf80 RCX: 00007f2b6f88c169
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 000000000000000b
RBP: 00007f2b6f8e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201004 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc55fa0c9f R14: 00007f2b70582300 R15: 0000000000022000
 </TASK>
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