Hello, syzbot found the following issue on:
HEAD commit: 8cd26fd90c1a Merge tag 'for-6.9-rc4-tag' of git://git.kern.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=102d27cd180000 kernel config: https://syzkaller.appspot.com/x/.config?x=87a805e655619c64 dashboard link: https://syzkaller.appspot.com/bug?extid=6c21aeb59d0e82eb2782 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=16e38c3b180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10e62fed180000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/488822aee24a/disk-8cd26fd9.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ba40e322ba00/vmlinux-8cd26fd9.xz kernel image: https://storage.googleapis.com/syzbot-assets/f30af1dfbc30/bzImage-8cd26fd9.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6c21aeb59d0e82eb2...@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in vsock_assign_transport+0xb2a/0xb90 net/vmw_vsock/af_vsock.c:500 vsock_assign_transport+0xb2a/0xb90 net/vmw_vsock/af_vsock.c:500 vsock_connect+0x544/0x1560 net/vmw_vsock/af_vsock.c:1393 __sys_connect_file net/socket.c:2048 [inline] __sys_connect+0x606/0x690 net/socket.c:2065 __do_sys_connect net/socket.c:2075 [inline] __se_sys_connect net/socket.c:2072 [inline] __x64_sys_connect+0x91/0xe0 net/socket.c:2072 x64_sys_call+0x3356/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:43 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: __kmalloc_large_node+0x231/0x370 mm/slub.c:3921 __do_kmalloc_node mm/slub.c:3954 [inline] __kmalloc_node+0xb07/0x1060 mm/slub.c:3973 kmalloc_node include/linux/slab.h:648 [inline] kvmalloc_node+0xc0/0x2d0 mm/util.c:634 kvmalloc include/linux/slab.h:766 [inline] vhost_vsock_dev_open+0x44/0x510 drivers/vhost/vsock.c:659 misc_open+0x66b/0x760 drivers/char/misc.c:165 chrdev_open+0xa5f/0xb80 fs/char_dev.c:414 do_dentry_open+0x11f1/0x2120 fs/open.c:955 vfs_open+0x7e/0xa0 fs/open.c:1089 do_open fs/namei.c:3642 [inline] path_openat+0x4a3c/0x5b00 fs/namei.c:3799 do_filp_open+0x20e/0x590 fs/namei.c:3826 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __x64_sys_openat+0x2a1/0x310 fs/open.c:1432 x64_sys_call+0x3a64/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:258 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 PID: 5021 Comm: syz-executor390 Not tainted 6.9.0-rc4-syzkaller-00038-g8cd26fd90c1a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ===================================================== --- 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 syzkal...@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title 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. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
