Hello:
This patch was applied to bpf/bpf.git (master)
by Andrii Nakryiko <andrii@xxxxxxxxxx>:
On Tue, 22 Oct 2024 21:01:33 +0800 you wrote:
> From: Hou Tao <houtao1@xxxxxxxxxx>
>
> In bpf_parse_param(), keep the value of param->string intact so it can
> be freed later. Otherwise, the kmalloc area pointed to by param->string
> will be leaked as shown below:
>
> unreferenced object 0xffff888118c46d20 (size 8):
> comm "new_name", pid 12109, jiffies 4295580214
> hex dump (first 8 bytes):
> 61 6e 79 00 38 c9 5c 7e any.8.\~
> backtrace (crc e1b7f876):
> [<00000000c6848ac7>] kmemleak_alloc+0x4b/0x80
> [<00000000de9f7d00>] __kmalloc_node_track_caller_noprof+0x36e/0x4a0
> [<000000003e29b886>] memdup_user+0x32/0xa0
> [<0000000007248326>] strndup_user+0x46/0x60
> [<0000000035b3dd29>] __x64_sys_fsconfig+0x368/0x3d0
> [<0000000018657927>] x64_sys_call+0xff/0x9f0
> [<00000000c0cabc95>] do_syscall_64+0x3b/0xc0
> [<000000002f331597>] entry_SYSCALL_64_after_hwframe+0x4b/0x53
>
> [...]
Here is the summary with links:
- [bpf,v3] bpf: Preserve param->string when parsing mount options
https://git.kernel.org/bpf/bpf/c/1f97c03f43fa
You are awesome, thank you!
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