Note: this repo doesn't host any KASAN code anymore as it's now in the mainline kernel.
KernelAddressSanitizer (KASAN) is a dynamic memory error detector for the Linux kernel that allows to find use-after-free and out-of-bounds bugs.
KASAN is available in the mainline Linux kernel starting from version 4.0 and can be enabled with CONFIG_KASAN=y.
See more details in KASAN documentation.
For questions use KASAN mailing list kasan-dev@googlegroups.com. You can subscribe to it either with a Google account or by sending an email to kasan-dev+subscribe@googlegroups.com.
Issues in KASAN itself can be reported on KASAN bug tracker.
To simplify reading KASAN reports you can use our symbolizer script:
$ cat report
...
[ 107.327411] [<ffffffff8110424c>] call_usermodehelper_freeinfo+0x2c/0x30
[ 107.328668] [<ffffffff811049d5>] call_usermodehelper_exec+0xa5/0x1c0
[ 107.329816] [<ffffffff811052b0>] call_usermodehelper+0x40/0x60
[ 107.330987] [<ffffffff8146c15e>] kobject_uevent_env+0x5ee/0x620
[ 107.332035] [<ffffffff8146c19b>] kobject_uevent+0xb/0x10
[ 107.333108] [<ffffffff8173bd7f>] net_rx_queue_update_kobjects+0xaf/0x150
...
$ cat report | ./kasan_symbolize.py --linux=path/to/kernel/ --strip=path/to/kernel/
...
[<ffffffff8110424c>] call_usermodehelper_freeinfo+0x2c/0x30 kernel/kmod.c:265
[<ffffffff811049d5>] call_usermodehelper_exec+0xa5/0x1c0 kernel/kmod.c:612
[<ffffffff811052b0>] call_usermodehelper+0x40/0x60 kernel/kmod.c:642
[<ffffffff8146c15e>] kobject_uevent_env+0x5ee/0x620 lib/kobject_uevent.c:311
[<ffffffff8146c19b>] kobject_uevent+0xb/0x10 lib/kobject_uevent.c:333
[< inlined >] net_rx_queue_update_kobjects+0xaf/0x150 rx_queue_add_kobject net/core/net-sysfs.c:771
[<ffffffff8173bd7f>] net_rx_queue_update_kobjects+0xaf/0x150 net/core/net-sysfs.c:786
...