I'll open an internal bug to track this one as well On Tue, 2024-02-27 at 06:58 -0800, syzbot wrote: > 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://urldefense.com/v3/__https://syzkaller.appspot.com/x/log.txt?x=11f0034a180000__;!!ACWV5N9M2RV99hQ!Iq2WfPLgQAxNX3WGPfZ2vZo8NvDf2KGDF7wNJIfWk8F2HZYpAewiikhTFuzAl-pW1GFS2sCceHF0oJ5iNVYuRrQ7VtyxsdI21zHnQ7yBtLek$ > > kernel config: > https://urldefense.com/v3/__https://syzkaller.appspot.com/x/.config?x=57c41f64f37f51c5__;!!ACWV5N9M2RV99hQ!Iq2WfPLgQAxNX3WGPfZ2vZo8NvDf2KGDF7wNJIfWk8F2HZYpAewiikhTFuzAl-pW1GFS2sCceHF0oJ5iNVYuRrQ7VtyxsdI21zHnQ8IBIvYV$ > > dashboard link: > https://urldefense.com/v3/__https://syzkaller.appspot.com/bug?extid=d4faee732755bba9838e__;!!ACWV5N9M2RV99hQ!Iq2WfPLgQAxNX3WGPfZ2vZo8NvDf2KGDF7wNJIfWk8F2HZYpAewiikhTFuzAl-pW1GFS2sCceHF0oJ5iNVYuRrQ7VtyxsdI21zHnQ373Ydb0$ > > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for > Debian) 2.40 > syz repro: > https://urldefense.com/v3/__https://syzkaller.appspot.com/x/repro.syz?x=11cbd722180000__;!!ACWV5N9M2RV99hQ!Iq2WfPLgQAxNX3WGPfZ2vZo8NvDf2KGDF7wNJIfWk8F2HZYpAewiikhTFuzAl-pW1GFS2sCceHF0oJ5iNVYuRrQ7VtyxsdI21zHnQ4Ypu5_j$ > > C reproducer: > https://urldefense.com/v3/__https://syzkaller.appspot.com/x/repro.c?x=10ff934a180000__;!!ACWV5N9M2RV99hQ!Iq2WfPLgQAxNX3WGPfZ2vZo8NvDf2KGDF7wNJIfWk8F2HZYpAewiikhTFuzAl-pW1GFS2sCceHF0oJ5iNVYuRrQ7VtyxsdI21zHnQ0MrP5gm$ > > > Downloadable assets: > disk image: > https://urldefense.com/v3/__https://storage.googleapis.com/syzbot-assets/2731aa9fb143/disk-25d43425.raw.xz__;!!ACWV5N9M2RV99hQ!Iq2WfPLgQAxNX3WGPfZ2vZo8NvDf2KGDF7wNJIfWk8F2HZYpAewiikhTFuzAl-pW1GFS2sCceHF0oJ5iNVYuRrQ7VtyxsdI21zHnQxlxW9s3$ > > vmlinux: > https://urldefense.com/v3/__https://storage.googleapis.com/syzbot-assets/d1daf5663559/vmlinux-25d43425.xz__;!!ACWV5N9M2RV99hQ!Iq2WfPLgQAxNX3WGPfZ2vZo8NvDf2KGDF7wNJIfWk8F2HZYpAewiikhTFuzAl-pW1GFS2sCceHF0oJ5iNVYuRrQ7VtyxsdI21zHnQ7aRfbY4$ > > kernel image: > https://urldefense.com/v3/__https://storage.googleapis.com/syzbot-assets/798446e4189b/bzImage-25d43425.xz__;!!ACWV5N9M2RV99hQ!Iq2WfPLgQAxNX3WGPfZ2vZo8NvDf2KGDF7wNJIfWk8F2HZYpAewiikhTFuzAl-pW1GFS2sCceHF0oJ5iNVYuRrQ7VtyxsdI21zHnQ7W6CtAb$ > > > 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. >
