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Linux kernel source tree
ab220548db
KMSAN reports an uninitialized value issue in dma_map_phys()[1]. This
is a false positive caused by the way the virtual address is handled
in kmsan_handle_dma(). Fix it by translating the physical address to
a virtual address using phys_to_virt().
[1]
BUG: KMSAN: uninit-value in dma_map_phys+0xdc5/0x1060
dma_map_phys+0xdc5/0x1060
dma_map_page_attrs+0xcf/0x130
e1000_xmit_frame+0x3c51/0x78f0
dev_hard_start_xmit+0x22f/0xa30
sch_direct_xmit+0x3b2/0xcf0
__dev_queue_xmit+0x3588/0x5e60
neigh_resolve_output+0x9c5/0xaf0
ip6_finish_output2+0x24e0/0x2d30
ip6_finish_output+0x903/0x10d0
ip6_output+0x331/0x600
mld_sendpack+0xb4a/0x1770
mld_ifc_work+0x1328/0x19b0
process_scheduled_works+0xb91/0x1d80
worker_thread+0xedf/0x1590
kthread+0xd5c/0xf00
ret_from_fork+0x1f5/0x4c0
ret_from_fork_asm+0x1a/0x30
Uninit was created at:
__kmalloc_cache_noprof+0x8f5/0x16b0
syslog_print+0x9a/0xef0
do_syslog+0x849/0xfe0
__x64_sys_syslog+0x97/0x100
x64_sys_call+0x3cf8/0x3e30
do_syscall_64+0xd9/0xfa0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Bytes 0-89 of 90 are uninitialized
Memory access of size 90 starts at ffff8880367ed000
CPU: 1 UID: 0 PID: 1552 Comm: kworker/1:2 Not tainted 6.17.0-next-20250929 #26 PREEMPT(none)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-5.fc42 04/01/2014
Workqueue: mld mld_ifc_work
Fixes:
|
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .pylintrc | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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 reStructuredText 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.