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Sun, 11 Aug 2024 18:37:03 -0700 (PDT) Date: Sun, 11 Aug 2024 18:37:03 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b008ae061f7287db@google.com> Subject: Re: [syzbot] [net?] [virt?] BUG: stack guard page was hit in vsock_bpf_recvmsg From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, xiyou.wangcong@gmail.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in release_sock ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6092 at include/net/sock.h:1718 sock_release_ownership include/net/sock.h:1718 [inline] WARNING: CPU: 1 PID: 6092 at include/net/sock.h:1718 release_sock+0x194/0x1f0 net/core/sock.c:3564 Modules linked in: CPU: 1 UID: 0 PID: 6092 Comm: syz.0.15 Not tainted 6.11.0-rc2-syzkaller-00325-gc4e82c025b3f-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:sock_release_ownership include/net/sock.h:1718 [inline] RIP: 0010:release_sock+0x194/0x1f0 net/core/sock.c:3564 Code: 01 00 00 00 31 c9 e8 7b 73 f2 f7 eb 05 e8 04 0a 19 f8 4c 89 f7 5b 41 5c 41 5d 41 5e 41 5f 5d e9 32 b9 45 02 e8 ed 09 19 f8 90 <0f> 0b 90 e9 67 ff ff ff e8 df 09 19 f8 4c 89 e7 49 89 db 41 ff d3 RSP: 0018:ffffc9000366fa80 EFLAGS: 00010293 RAX: ffffffff897a6d93 RBX: 0000000000000000 RCX: ffff88801cb81e00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 1ffff11005538250 R08: ffffffff897a6cf6 R09: fffff520006cdf40 R10: dffffc0000000000 R11: fffff520006cdf40 R12: ffff88802a9c1080 R13: dffffc0000000000 R14: ffff88802a9c1240 R15: ffff88802a9c1280 FS: 00007f2597b966c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000040 CR3: 00000000229fe000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vsock_connectible_recvmsg+0x7f/0xf0 net/vmw_vsock/af_vsock.c:2308 sock_recvmsg_nosec net/socket.c:1046 [inline] sock_recvmsg+0x22f/0x280 net/socket.c:1068 ____sys_recvmsg+0x1db/0x470 net/socket.c:2816 ___sys_recvmsg net/socket.c:2858 [inline] __sys_recvmsg+0x2f0/0x3e0 net/socket.c:2888 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2596d779f9 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2597b96038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007f2596f05f80 RCX: 00007f2596d779f9 RDX: 0000000000010042 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 00007f2596de58ee R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2596f05f80 R15: 00007fff84f29b48 Tested on: commit: c4e82c02 net: dsa: microchip: ksz9477: split half-dupl.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=166ef55d980000 kernel config: https://syzkaller.appspot.com/x/.config?x=e8a2eef9745ade09 dashboard link: https://syzkaller.appspot.com/bug?extid=bdb4bd87b5e22058e2a4 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=131902ed980000