On Thu, Jan 30, 2020 at 01:23:21PM +0300, Vasily Averin wrote:
> If seq_file .next function does not change position index,
> read after non-zero lseek can generate unexpected output.
Is it unwanted or unexpected? Unexpected would be mean random
output. I don't think that is the case. Please describe more
throughly.
> For /sys/kernel/security/tpm0/binary_bios_measurements:
> 1) read after lseek beyond end of file generates whole last line.
> 2) read after lseek to middle of last line generates
> expected end of last line and unexpected whole last line once again.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 1f4aace60b0e ("fs/seq_file.c: simplify seq_file iteration code ...")
>
No empty line here.
> https://bugzilla.kernel.org/show_bug.cgi?id=206283
"Link: https://bugzilla.kernel.org/show_bug.cgi?id=206283";
/Jarkko
