CVE-2021-46956

In the Linux kernel, the following vulnerability has been resolved: virtiofs: fix memory leak in virtio_fs_probe() When accidentally passing twice the same tag to qemu, kmemleak ended up reporting a memory leak in virtiofs. Also, looking at the log I saw the following error (that's when I realised the duplicated tag): virtiofs: probe of virtio5 failed with error -17 Here's the kmemleak log for reference: unreferenced object 0xffff888103d47800 (size 1024): comm "systemd-udevd", pid 118, jiffies 4294893780 (age 18.340s) hex dump (first 32 bytes): 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N.......... ff ff ff ff ff ff ff ff 80 90 02 a0 ff ff ff ff ................ backtrace: [ ] virtio_fs_probe+0x171/0x7ae [virtiofs] [ ] virtio_dev_probe+0x15f/0x210 [ ] really_probe+0xea/0x430 [ ] device_driver_attach+0xa8/0xb0 [ ] __driver_attach+0x98/0x140 [ ] bus_for_each_dev+0x7b/0xc0 [ ] bus_add_driver+0x11b/0x1f0 [ ] driver_register+0x8f/0xe0 [ ] 0xffffffffa002c013 [ ] do_one_initcall+0x64/0x2e0 [ ] do_init_module+0x5c/0x260 [ ] __do_sys_finit_module+0xb5/0x120 [ ] do_syscall_64+0x33/0x40 [ ] entry_SYSCALL_64_after_hwframe+0x44/0xae