diff options
author | Eric W. Biederman <ebiederm@xmission.com> | 2017-05-11 18:21:01 -0500 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-05-25 14:30:11 +0200 |
commit | ddf9b92f12dd9139789786a4ba1a33dbdf693b8a (patch) | |
tree | 6d42d34a3216bad356c92318d2ec7444eab99438 /init | |
parent | 060d2642682e705a442bf6c4c454b367ad87abaa (diff) |
pid_ns: Sleep in TASK_INTERRUPTIBLE in zap_pid_ns_processes
commit b9a985db98961ae1ba0be169f19df1c567e4ffe0 upstream.
The code can potentially sleep for an indefinite amount of time in
zap_pid_ns_processes triggering the hung task timeout, and increasing
the system average. This is undesirable. Sleep with a task state of
TASK_INTERRUPTIBLE instead of TASK_UNINTERRUPTIBLE to remove these
undesirable side effects.
Apparently under heavy load this has been allowing Chrome to trigger
the hung time task timeout error and cause ChromeOS to reboot.
Reported-by: Vovo Yang <vovoy@google.com>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Fixes: 6347e9009104 ("pidns: guarantee that the pidns init will be the last pidns process reaped")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions