================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_txnmgr.c:1743:5 index 18 is out of range for type 'xad_t[18]' (aka 'struct xad[18]') CPU: 0 PID: 13998 Comm: syz-executor.2 Not tainted 6.5.0-syzkaller-11938-g65d6e954e378 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 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 xtLog fs/jfs/jfs_txnmgr.c:1743 [inline] txLog fs/jfs/jfs_txnmgr.c:1396 [inline] txCommit+0x3f0b/0x6ba0 fs/jfs/jfs_txnmgr.c:1264 jfs_commit_inode+0x366/0x580 fs/jfs/inode.c:108 extAlloc+0xcac/0x1000 fs/jfs/jfs_extent.c:172 jfs_get_block+0x41b/0xe60 fs/jfs/inode.c:248 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:3010 [inline] jfs_direct_IO+0xf8/0x1e0 fs/jfs/inode.c:331 generic_file_direct_write+0x1e3/0x3f0 mm/filemap.c:3867 __generic_file_write_iter+0x125/0x230 mm/filemap.c:4023 generic_file_write_iter+0xaf/0x310 mm/filemap.c:4063 call_write_iter include/linux/fs.h:1985 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x782/0xaf0 fs/read_write.c:584 ksys_write+0x1a0/0x2c0 fs/read_write.c:637 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: 0033:0x7fb9ff67cae9 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:00007fba004a80c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb9ff79bf80 RCX: 00007fb9ff67cae9 RDX: 0000000000076000 RSI: 0000000020004200 RDI: 0000000000000006 RBP: 00007fb9ff6c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fb9ff79bf80 R15: 00007ffcf11a7178 ================================================================================