================================================================================ 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: 0 PID: 31219 Comm: syz-executor.3 Not tainted 6.5.0-rc1-syzkaller-00152-g4b810bf037e5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Call Trace: __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 get_more_blocks fs/direct-io.c:647 [inline] do_direct_IO fs/direct-io.c:935 [inline] __blockdev_direct_IO+0x1ad4/0x4280 fs/direct-io.c:1248 blockdev_direct_IO include/linux/fs.h:2830 [inline] jfs_direct_IO+0xf8/0x1e0 fs/jfs/inode.c:331 generic_file_read_iter+0x342/0x550 mm/filemap.c:2814 call_read_iter include/linux/fs.h:1865 [inline] copy_splice_read+0x4c9/0x9c0 fs/splice.c:367 splice_direct_to_actor+0x2c4/0x9e0 fs/splice.c:1070 do_splice_direct+0x2ac/0x3f0 fs/splice.c:1195 do_sendfile+0x623/0x1070 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: 0033:0x7f502207cb29 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:00007f5022e9d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f502219bf80 RCX: 00007f502207cb29 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006 RBP: 00007f50220c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f502219bf80 R15: 00007ffcf55e23a8 ================================================================================