Hello, syzbot found the following issue on: HEAD commit: 065efa589871 Add linux-next specific files for 20230517 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=17f27bb2280000 kernel config: https://syzkaller.appspot.com/x/.config?x=821eeb02ef201bcc dashboard link: https://syzkaller.appspot.com/bug?extid=ac3b41786a2d0565b6d5 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/dbbd691e9e5a/disk-065efa58.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e5b9541c3979/vmlinux-065efa58.xz kernel image: https://storage.googleapis.com/syzbot-assets/44cf3f3aaabb/bzImage-065efa58.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ac3b41786a2d0565b6d5@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================================ UBSAN: array-index-out-of-bounds in kernel/pid.c:244:15 index 1 is out of range for type 'upid [1]' CPU: 1 PID: 5002 Comm: syz-executor.0 Not tainted 6.4.0-rc2-next-20230517-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x136/0x150 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:217 [inline] __ubsan_handle_out_of_bounds+0xd5/0x140 lib/ubsan.c:348 alloc_pid+0xbe5/0xdd0 kernel/pid.c:244 copy_process+0x45da/0x7660 kernel/fork.c:2522 kernel_clone+0xeb/0x890 kernel/fork.c:2914 __do_sys_clone+0xba/0x100 kernel/fork.c:3057 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f23be089e9b Code: ed 0f 85 60 01 00 00 64 4c 8b 0c 25 10 00 00 00 45 31 c0 4d 8d 91 d0 02 00 00 31 d2 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 89 00 00 00 41 89 c5 85 c0 0f 85 90 00 00 RSP: 002b:00007ffe5c64b680 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffe5c64bcd8 RCX: 00007f23be089e9b RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000555557393400 R10: 00005555573936d0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe5c64b770 R14: 00007f23be1ac9d8 R15: 000000000000000c </TASK> ================================================================================ --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
