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UBSAN: array-index-out-of-bounds in fs/jfs/jfs_xtree.c:360:4
index 18 is out of range for type 'xad_t [18]'
CPU: 0 PID: 28336 Comm: syz-executor.1 Not tainted 6.6.0-rc4-syzkaller-00012-gce36c8b14987 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_out_of_bounds+0x111/0x150 lib/ubsan.c:348
 xtSearch+0x12e2/0x1650 fs/jfs/jfs_xtree.c:360
 xtLookup+0x273/0x840 fs/jfs/jfs_xtree.c:152
 jfs_get_block+0x325/0xb20 fs/jfs/inode.c:218
 do_mpage_readpage+0x6f8/0x1ab0 fs/mpage.c:234
 mpage_readahead+0x34d/0x590 fs/mpage.c:382
 read_pages+0x1d1/0xdb0 mm/readahead.c:160
 page_cache_ra_unbounded+0x457/0x5e0 mm/readahead.c:269
 do_page_cache_ra mm/readahead.c:299 [inline]
 page_cache_ra_order+0x72b/0xa80 mm/readahead.c:546
 ondemand_readahead+0x493/0x1130 mm/readahead.c:668
 page_cache_async_ra mm/readahead.c:717 [inline]
 page_cache_async_ra+0x123/0x150 mm/readahead.c:699
 filemap_readahead mm/filemap.c:2531 [inline]
 filemap_get_pages+0x35a/0x1830 mm/filemap.c:2572
 filemap_splice_read+0x3d0/0x9f0 mm/filemap.c:2919
 vfs_splice_read fs/splice.c:993 [inline]
 vfs_splice_read+0x2c8/0x3b0 fs/splice.c:962
 splice_direct_to_actor+0x2a5/0xa30 fs/splice.c:1069
 do_splice_direct+0x1af/0x280 fs/splice.c:1194
 do_sendfile+0xb88/0x1390 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64 fs/read_write.c:1308 [inline]
 __x64_sys_sendfile64+0x1d6/0x220 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff8ab47cae9
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:00007ff8ac1400c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007ff8ab59bf80 RCX: 00007ff8ab47cae9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007ff8ab4c847a R08: 0000000000000000 R09: 0000000000000000
R10: 000080001d00c0d0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff8ab59bf80 R15: 00007ffcf7bfd0a8
 </TASK>
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