loop0: detected capacity change from 0 to 65535 ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:1360:54 index -1 is out of range for type 'atomic_t [128]' CPU: 1 PID: 5464 Comm: syz-executor.0 Not tainted 6.6.0-rc1-syzkaller-00196-g57d88e8a5974 #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 diAlloc+0x169e/0x1a00 fs/jfs/jfs_imap.c:1360 ialloc+0x8e/0xa70 fs/jfs/jfs_inode.c:56 jfs_create+0x23a/0xb10 fs/jfs/namei.c:92 lookup_open.isra.0+0x1049/0x1360 fs/namei.c:3495 open_last_lookups fs/namei.c:3563 [inline] path_openat+0x931/0x29c0 fs/namei.c:3793 do_filp_open+0x1de/0x430 fs/namei.c:3823 do_sys_openat2+0x176/0x1e0 fs/open.c:1422 do_sys_open fs/open.c:1437 [inline] __do_sys_open fs/open.c:1445 [inline] __se_sys_open fs/open.c:1441 [inline] __x64_sys_open+0x154/0x1e0 fs/open.c:1441 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: 0033:0x7f0e0e07adf9 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0e0f1f00c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f0e0e19bf80 RCX: 00007f0e0e07adf9 RDX: 0000000000000000 RSI: 00000000000000f0 RDI: 0000000020000140 RBP: 00007f0e0e0d7547 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f0e0e19bf80 R15: 00007fff561222b8 ================================================================================