================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_txnmgr.c:1777:5 index 18 is out of range for type 'xad_t[18]' (aka 'struct xad[18]') CPU: 0 PID: 5824 Comm: syz.1.413 Not tainted 5.15.173-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0x118/0x140 lib/ubsan.c:282 xtLog fs/jfs/jfs_txnmgr.c:1777 [inline] txLog fs/jfs/jfs_txnmgr.c:1396 [inline] txCommit+0x3f07/0x6ba0 fs/jfs/jfs_txnmgr.c:1264 jfs_commit_inode+0x362/0x580 fs/jfs/inode.c:108 extAlloc+0xca8/0x1000 fs/jfs/jfs_extent.c:175 jfs_get_block+0x417/0xe50 fs/jfs/inode.c:258 nobh_write_begin+0x398/0xda0 fs/buffer.c:2650 jfs_write_begin+0x3e/0x80 fs/jfs/inode.c:322 generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3785 __generic_file_write_iter+0x381/0x4f0 mm/filemap.c:3880 generic_file_write_iter+0xa7/0x1b0 mm/filemap.c:3944 do_iter_readv_writev+0x594/0x7a0 do_iter_write+0x1e6/0x760 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+0x622/0x1000 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+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f64397a9759 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6437c21038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f6439960f80 RCX: 00007f64397a9759 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 00007f643981c75e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6439960f80 R15: 00007ffce1aba3f8 ================================================================================