Description: broken KRETPROBES reports corruption of .text section while running a FTRACE stress tester
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=1928236
 https://www.openwall.com/lists/oss-security/2021/02/19/6
 https://lore.kernel.org/lkml/20201209215001.GA8593@pi3.com.pl/
 https://lists.openwall.net/linux-kernel/2020/12/11/265
 http://blog.pi3.com.pl/?p=831
Notes:
Bugs:
upstream: released (5.10-rc1) [e03b4a084ea6b0a18b0e874baec439e69090c168], released (5.10-rc3) [645f224e7ba2f4200bf163153d384ceb0de5462e], released (5.10) [0d07c0ec4381f630c801539c79ad8dcc627f6e4a]
5.10-upstream-stable: N/A "Fixed before branching point"
4.19-upstream-stable: N/A "Vulnerable code introduced later"
4.9-upstream-stable: N/A "Vulnerable code introduced later"
sid: released (5.9.15-1)
4.19-buster-security: N/A "Vulnerable code introduced later"
4.9-stretch-security: N/A "Vulnerable code introduced later"