Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
Wang Hai
authored
When registering struct net_device, it will call register_netdevice -> netdev_register_kobject -> device_initialize(dev); dev_set_name(dev, "%s", ndev->name) device_add(dev) register_queue_kobjects(ndev) In netdev_register_kobject(), if device_add(dev) or register_queue_kobjects(ndev) failed. Register_netdevice() will return error, causing netdev_freemem(ndev) to be called to free net_device, however put_device(&dev->dev)->..-> kobject_cleanup() won't be called, resulting in a memory leak. syzkaller report this: BUG: memory leak unreferenced object 0xffff8881f4fad168 (size 8): comm "syz-executor.0", pid 3575, jiffies 4294778002 (age 20.134s) hex dump (first 8 bytes): 77 70 61 6e 30 00 ff ff wpan0... backtrace: [<000000006d2d91d7>] kstrdup_const+0x3d/0x50 mm/util.c:73 [<00000000ba9ff953>] kvasprintf_const+0x112/0x170 lib/kasprintf.c:48 [<000000005555ec09>] kobject_set_name_vargs+0x55/0x130 lib/kobject.c:281 [<0000000098d28ec3>] dev_set_name+0xbb/0xf0 drivers/base/core.c:1915 [<00000000b7553017>] netdev_register_kobject+0xc0/0x410 net/core/net-sysfs.c:1727 [<00000000c826a797>] register_netdevice+0xa51/0xeb0 net/core/dev.c:8711 [<00000000857bfcfd>] cfg802154_update_iface_num.isra.2+0x13/0x90 [ieee802154] [<000000003126e453>] ieee802154_llsec_fill_key_id+0x1d5/0x570 [ieee802154] [<00000000e4b3df51>] 0xffffffffc1500e0e [<00000000b4319776>] platform_drv_probe+0xc6/0x180 drivers/base/platform.c:614 [<0000000037669347>] really_probe+0x491/0x7c0 drivers/base/dd.c:509 [<000000008fed8862>] driver_probe_device+0xdc/0x240 drivers/base/dd.c:671 [<00000000baf52041>] device_driver_attach+0xf2/0x130 drivers/base/dd.c:945 [<00000000c7cc8dec>] __driver_attach+0x10e/0x210 drivers/base/dd.c:1022 [<0000000057a757c2>] bus_for_each_dev+0x154/0x1e0 drivers/base/bus.c:304 [<000000005f5ae04b>] bus_add_driver+0x427/0x5e0 drivers/base/bus.c:645 Reported-by:Hulk Robot <hulkci@huawei.com> Fixes: 1fa5ae85 ("driver core: get rid of struct device's bus_id string array") Signed-off-by:
Wang Hai <wanghai26@huawei.com> Reviewed-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by:
Stephen Hemminger <stephen@networkplumber.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
| Name | Last commit | Last update |
|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README |