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ffef737fd0
The cited Fixes commit introduced a memory leak when running kTLS
traffic (with/without hardware offloads).
I'm running nginx on the server side and wrk on the client side and get
the following:
unreferenced object 0xffff8881935e9b80 (size 224):
comm "softirq", pid 0, jiffies 4294903611 (age 43.204s)
hex dump (first 32 bytes):
80 9b d0 36 81 88 ff ff 00 00 00 00 00 00 00 00 ...6............
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<00000000efe2a999>] build_skb+0x1f/0x170
[<00000000ef521785>] mlx5e_skb_from_cqe_mpwrq_linear+0x2bc/0x610 [mlx5_core]
[<00000000945d0ffe>] mlx5e_handle_rx_cqe_mpwrq+0x264/0x9e0 [mlx5_core]
[<00000000cb675b06>] mlx5e_poll_rx_cq+0x3ad/0x17a0 [mlx5_core]
[<0000000018aac6a9>] mlx5e_napi_poll+0x28c/0x1b60 [mlx5_core]
[<000000001f3369d1>] __napi_poll+0x9f/0x560
[<00000000cfa11f72>] net_rx_action+0x357/0xa60
[<000000008653b8d7>] __do_softirq+0x282/0x94e
[<00000000644923c6>] __irq_exit_rcu+0x11f/0x170
[<00000000d4085f8f>] irq_exit_rcu+0xa/0x20
[<00000000d412fef4>] common_interrupt+0x7d/0xa0
[<00000000bfb0cebc>] asm_common_interrupt+0x1e/0x40
[<00000000d80d0890>] default_idle+0x53/0x70
[<00000000f2b9780e>] default_idle_call+0x8c/0xd0
[<00000000c7659e15>] do_idle+0x394/0x450
I'm not familiar with these areas of the code, but I've added this
sk_defer_free_flush() to tls_sw_recvmsg() based on a hunch and it
resolved the issue.
Fixes:
|
||
---|---|---|
arch | ||
block | ||
certs | ||
crypto | ||
Documentation | ||
drivers | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
LICENSES | ||
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 |
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.