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UBSAN: array-index-out-of-bounds in fs/jfs/jfs_xtree.c:371:4
index 19 is out of range for type 'xad_t[18]' (aka 'struct xad[18]')
CPU: 0 PID: 3503 Comm: syz-executor364 Not tainted 5.15.149-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 ubsan_epilogue lib/ubsan.c:151 [inline]
 __ubsan_handle_out_of_bounds+0x118/0x140 lib/ubsan.c:282
 xtSearch+0x6dc/0x1ca0 fs/jfs/jfs_xtree.c:371
 xtLookup+0x2c0/0x8e0 fs/jfs/jfs_xtree.c:163
 jfs_get_block+0x2e5/0xe50 fs/jfs/inode.c:218
 __mpage_writepage+0x4f9/0x1c00 fs/mpage.c:564
 write_cache_pages+0xa97/0x1160 mm/page-writeback.c:2255
 mpage_writepages+0x13c/0x2f0 fs/mpage.c:712
 do_writepages+0x481/0x730 mm/page-writeback.c:2364
 filemap_fdatawrite_wbc+0x1d6/0x230 mm/filemap.c:400
 __filemap_fdatawrite_range mm/filemap.c:433 [inline]
 file_write_and_wait_range+0x1cb/0x2b0 mm/filemap.c:810
 jfs_fsync+0x6e/0x1c0 fs/jfs/file.c:24
 generic_write_sync include/linux/fs.h:2956 [inline]
 generic_file_write_iter+0x15e/0x1b0 mm/filemap.c:3948
 do_iter_readv_writev+0x594/0x7a0
 do_iter_write+0x1ea/0x760 fs/read_write.c:855
 iter_file_splice_write+0x806/0xfa0 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0xe3/0x1c0 fs/splice.c:936
 splice_direct_to_actor+0x500/0xc10 fs/splice.c:891
 do_splice_direct+0x285/0x3d0 fs/splice.c:979
 do_sendfile+0x625/0xff0 fs/read_write.c:1249
 __do_sys_sendfile64 fs/read_write.c:1317 [inline]
 __se_sys_sendfile64+0x178/0x1e0 fs/read_write.c:1303
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fecc9306589
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 18 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:00007fecc92a2228 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fecc9393658 RCX: 00007fecc9306589
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000008
RBP: 00007fecc9393650 R08: 00007fecc92a26c0 R09: 00007fecc92a26c0
R10: 0001000000201005 R11: 0000000000000246 R12: 00007fecc939365c
R13: 00007fecc935ff58 R14: 00007fecc935a0c0 R15: 00007fff6d28c2e8
 </TASK>
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