Hello, syzbot found the following issue on: HEAD commit: a409ed15 Merge tag 'gpio-v5.11-1' of git://git.kernel.org/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10a5880f500000 kernel config: https://syzkaller.appspot.com/x/.config?x=37c889fb8b2761af dashboard link: https://syzkaller.appspot.com/bug?extid=1115e79c8df6472c612b compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14d18f9b500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=106a2c13500000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1115e79c8df6472c612b@xxxxxxxxxxxxxxxxxxxxxxxxx Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.29' (ECDSA) to the list of known hosts. executing program executing program BUG: memory leak unreferenced object 0xffff88810fb12300 (size 256): comm "syz-executor399", pid 8472, jiffies 4294942333 (age 13.960s) hex dump (first 32 bytes): 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000009fd00995>] kmalloc_node include/linux/slab.h:575 [inline] [<000000009fd00995>] kvmalloc_node+0x61/0xf0 mm/util.c:575 [<0000000096a57c4a>] kvmalloc include/linux/mm.h:773 [inline] [<0000000096a57c4a>] video_usercopy+0x991/0xa50 drivers/media/v4l2-core/v4l2-ioctl.c:3303 [<00000000f7529cc2>] v4l2_ioctl+0x77/0x90 drivers/media/v4l2-core/v4l2-dev.c:360 [<0000000061b5e6a9>] vfs_ioctl fs/ioctl.c:48 [inline] [<0000000061b5e6a9>] __do_sys_ioctl fs/ioctl.c:753 [inline] [<0000000061b5e6a9>] __se_sys_ioctl fs/ioctl.c:739 [inline] [<0000000061b5e6a9>] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:739 [<000000000139479b>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<00000000d6de1c9c>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88810f934300 (size 256): comm "syz-executor399", pid 8473, jiffies 4294942927 (age 8.030s) hex dump (first 32 bytes): 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000009fd00995>] kmalloc_node include/linux/slab.h:575 [inline] [<000000009fd00995>] kvmalloc_node+0x61/0xf0 mm/util.c:575 [<0000000096a57c4a>] kvmalloc include/linux/mm.h:773 [inline] [<0000000096a57c4a>] video_usercopy+0x991/0xa50 drivers/media/v4l2-core/v4l2-ioctl.c:3303 [<00000000f7529cc2>] v4l2_ioctl+0x77/0x90 drivers/media/v4l2-core/v4l2-dev.c:360 [<0000000061b5e6a9>] vfs_ioctl fs/ioctl.c:48 [inline] [<0000000061b5e6a9>] __do_sys_ioctl fs/ioctl.c:753 [inline] [<0000000061b5e6a9>] __se_sys_ioctl fs/ioctl.c:739 [inline] [<0000000061b5e6a9>] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:739 [<000000000139479b>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<00000000d6de1c9c>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 --- 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. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
