loop0: detected capacity change from 0 to 32768 ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2952:29 index 1381 is out of range for type 's8 [1365]' CPU: 0 PID: 5450 Comm: syz-executor.0 Not tainted 6.6.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: __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 dbFindLeaf+0x23b/0x240 fs/jfs/jfs_dmap.c:2952 dbAllocDmapLev+0xaa/0x2f0 fs/jfs/jfs_dmap.c:1960 dbAllocCtl+0x12c/0x7b0 fs/jfs/jfs_dmap.c:1816 dbAllocAG+0x8c5/0xd20 fs/jfs/jfs_dmap.c:1357 dbAlloc+0x415/0xaa0 fs/jfs/jfs_dmap.c:881 dtSplitUp+0x3f3/0x5850 fs/jfs/jfs_dtree.c:974 dtInsert+0x872/0xb00 fs/jfs/jfs_dtree.c:863 jfs_mkdir+0x665/0xb00 fs/jfs/namei.c:270 vfs_mkdir+0x532/0x7e0 fs/namei.c:4120 do_mkdirat+0x2a9/0x330 fs/namei.c:4143 __do_sys_mkdirat fs/namei.c:4158 [inline] __se_sys_mkdirat fs/namei.c:4156 [inline] __x64_sys_mkdirat+0x115/0x170 fs/namei.c:4156 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: 0033:0x7f611827cae9 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:00007f61190100c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f611839bf80 RCX: 00007f611827cae9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004 RBP: 00007f61182c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f611839bf80 R15: 00007ffcdfa6d308 ================================================================================