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UBSAN: array-index-out-of-bounds in fs/jfs/jfs_xtree.c:633:9
index 19 is out of range for type 'xad_t[18]' (aka 'struct xad[18]')
CPU: 1 PID: 5262 Comm: syz-executor.0 Not tainted 5.18.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2cf lib/dump_stack.c:106
 ubsan_epilogue lib/ubsan.c:151 [inline]
 __ubsan_handle_out_of_bounds+0x117/0x160 lib/ubsan.c:283
 xtInsert+0x10c1/0x1190 fs/jfs/jfs_xtree.c:633
 extAlloc+0xa64/0x1010 fs/jfs/jfs_extent.c:148
 jfs_get_block+0x41b/0xe60 fs/jfs/inode.c:258
 get_more_blocks fs/direct-io.c:663 [inline]
 do_direct_IO fs/direct-io.c:949 [inline]
 do_blockdev_direct_IO fs/direct-io.c:1264 [inline]
 __blockdev_direct_IO+0x16da/0x43b0 fs/direct-io.c:1356
 blockdev_direct_IO include/linux/fs.h:3063 [inline]
 jfs_direct_IO+0xfa/0x1e0 fs/jfs/inode.c:343
 generic_file_direct_write+0x208/0x460 mm/filemap.c:3710
 __generic_file_write_iter+0x1c8/0x400 mm/filemap.c:3871
 generic_file_write_iter+0xab/0x1b0 mm/filemap.c:3947
 do_iter_readv_writev+0x47b/0x620
 do_iter_write+0x1e7/0x760 fs/read_write.c:852
 iter_file_splice_write+0x80a/0xfa0 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0xe7/0x1c0 fs/splice.c:936
 splice_direct_to_actor+0x501/0xc00 fs/splice.c:891
 do_splice_direct+0x283/0x3d0 fs/splice.c:979
 do_sendfile+0x600/0xfa0 fs/read_write.c:1246
 __do_sys_sendfile64 fs/read_write.c:1311 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1297
 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+0x44/0xae
RIP: 0033:0x7f7b53c7c859
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7b5497b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f7b53d9c050 RCX: 00007f7b53c7c859
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000007
RBP: 00007f7b53cd8ad0 R08: 0000000000000000 R09: 0000000000000000
R10: 000080001d00c0d0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f7b53d9c050 R15: 00007fff814a4718
 </TASK>
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