Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: UBSAN: array-index-out-of-bounds in io_setup_async_msg ================================================================================ UBSAN: array-index-out-of-bounds in io_uring/net.c:189:55 index 3779565697114 is out of range for type 'iovec [8]' CPU: 1 PID: 5467 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: <TASK> __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 io_setup_async_msg+0x2a0/0x2b0 io_uring/net.c:189 io_recvmsg+0x169f/0x2170 io_uring/net.c:781 io_issue_sqe+0x54a/0xd80 io_uring/io_uring.c:1878 io_queue_sqe io_uring/io_uring.c:2063 [inline] io_submit_sqe io_uring/io_uring.c:2323 [inline] io_submit_sqes+0x96c/0x1ed0 io_uring/io_uring.c:2438 __do_sys_io_uring_enter+0x14ea/0x2650 io_uring/io_uring.c:3647 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: 0033:0x7f9a8a27cae9 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:00007f9a8af210c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f9a8a39bf80 RCX: 00007f9a8a27cae9 RDX: 0000000000000000 RSI: 0000000000007689 RDI: 0000000000000003 RBP: 00007f9a8a2c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f9a8a39bf80 R15: 00007ffd083c1e58 </TASK> ================================================================================ Tested on: commit: 0bb80ecc Linux 6.6-rc1 git tree: https://github.com/isilence/linux.git syz-test/netmsg-init-base console output: https://syzkaller.appspot.com/x/log.txt?x=15ccbf30680000 kernel config: https://syzkaller.appspot.com/x/.config?x=f4894cf58531f dashboard link: https://syzkaller.appspot.com/bug?extid=a4c6e5ef999b68b26ed1 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied.
