syzbot has found a reproducer for the following issue on: HEAD commit: 25d434257464 Merge branch 'pcs-xpcs-cleanups' git tree: net-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=11f0034a180000 kernel config: https://syzkaller.appspot.com/x/.config?x=57c41f64f37f51c5 dashboard link: https://syzkaller.appspot.com/bug?extid=d4faee732755bba9838e compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11cbd722180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10ff934a180000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/2731aa9fb143/disk-25d43425.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d1daf5663559/vmlinux-25d43425.xz kernel image: https://storage.googleapis.com/syzbot-assets/798446e4189b/bzImage-25d43425.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d4faee732755bba9838e@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5244 at net/rds/connection.c:931 rds_conn_connect_if_down+0x95/0xb0 net/rds/connection.c:931 Modules linked in: CPU: 0 PID: 5244 Comm: syz-executor403 Not tainted 6.8.0-rc5-syzkaller-01592-g25d434257464 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:rds_conn_connect_if_down+0x95/0xb0 net/rds/connection.c:931 Code: 00 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 2e c3 42 f7 49 8b 3e 5b 41 5e 41 5f e9 f1 fa ff ff e8 ac 49 e0 f6 90 <0f> 0b 90 eb cb 89 d9 80 e1 07 38 c1 7c a9 48 89 df e8 75 c2 42 f7 RSP: 0018:ffffc900042cf8a0 EFLAGS: 00010293 RAX: ffffffff8ab323c4 RBX: 0000000000000002 RCX: ffff888021100000 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc900042cfad0 R08: ffffffff8ab3238b R09: ffffffff8ab44361 R10: 0000000000000002 R11: ffff888021100000 R12: ffff8880746ee000 R13: ffff88802e39a6c0 R14: ffff8880260f2000 R15: dffffc0000000000 FS: 00007f8c89bff6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002069d000 CR3: 000000002989a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> rds_sendmsg+0x1409/0x2280 net/rds/send.c:1319 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f8c89c84519 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 1a 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:00007f8c89bff218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f8c89d0e428 RCX: 00007f8c89c84519 RDX: 0000000000000000 RSI: 0000000020000800 RDI: 0000000000000003 RBP: 00007f8c89d0e420 R08: 00007ffeca3c5797 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8c89d0e42c R13: 00007f8c89cdb4f4 R14: 732e79726f6d656d R15: 00007ffeca3c5798 </TASK> --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.
