Hello, syzbot found the following issue on: HEAD commit: 0dd2a6fb1e34 Merge tag 'tty-6.4-rc3' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12f15641280000 kernel config: https://syzkaller.appspot.com/x/.config?x=8944c5b480b57ee6 dashboard link: https://syzkaller.appspot.com/bug?extid=6fda7f092994bd03fad1 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17c2cf09280000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16325819280000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/2961112b4460/disk-0dd2a6fb.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/8ef8e1887351/vmlinux-0dd2a6fb.xz kernel image: https://storage.googleapis.com/syzbot-assets/4a1c984d6f73/bzImage-0dd2a6fb.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6fda7f092994bd03fad1@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: memory leak unreferenced object 0xffff88810eb60000 (size 26640): comm "syz-executor100", pid 4988, jiffies 4294944215 (age 14.910s) hex dump (first 32 bytes): 03 cc 4b ef 00 00 00 00 00 68 00 00 01 00 00 00 ..K......h...... 0d e4 73 70 56 3e d4 50 e7 4f ba 9e e1 5c c0 c3 ..spV>.P.O...\.. backtrace: [<ffffffff815460d7>] __do_kmalloc_node mm/slab_common.c:954 [inline] [<ffffffff815460d7>] __kmalloc+0xb7/0x120 mm/slab_common.c:979 [<ffffffff826405bd>] kmalloc include/linux/slab.h:563 [inline] [<ffffffff826405bd>] fbcon_set_font+0x1ed/0x4a0 drivers/video/fbdev/core/fbcon.c:2502 [<ffffffff8278ad5e>] con_font_set drivers/tty/vt/vt.c:4626 [inline] [<ffffffff8278ad5e>] con_font_op+0x5ae/0x730 drivers/tty/vt/vt.c:4673 [<ffffffff82774b78>] vt_k_ioctl drivers/tty/vt/vt_ioctl.c:474 [inline] [<ffffffff82774b78>] vt_ioctl+0x468/0x1d90 drivers/tty/vt/vt_ioctl.c:752 [<ffffffff82757161>] tty_ioctl+0x4c1/0xd00 drivers/tty/tty_io.c:2777 [<ffffffff8167fa80>] vfs_ioctl fs/ioctl.c:51 [inline] [<ffffffff8167fa80>] __do_sys_ioctl fs/ioctl.c:870 [inline] [<ffffffff8167fa80>] __se_sys_ioctl fs/ioctl.c:856 [inline] [<ffffffff8167fa80>] __x64_sys_ioctl+0x100/0x140 fs/ioctl.c:856 [<ffffffff84a14749>] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [<ffffffff84a14749>] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 [<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd --- 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 syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, 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 change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
