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author | Eric W. Biederman <ebiederm@xmission.com> | 2019-05-15 12:29:52 -0500 |
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committer | Eric W. Biederman <ebiederm@xmission.com> | 2019-05-27 09:36:28 -0500 |
commit | f9070dc94542093fd516ae4ccea17ef46a4362c5 (patch) | |
tree | 9c1af3d66497c11cbce00ca030c241a4fb643392 /arch/mips | |
parent | 1dfd1711de2952fd1bfeea7152bd1687a4eea771 (diff) | |
download | linux-f9070dc94542093fd516ae4ccea17ef46a4362c5.tar.gz linux-f9070dc94542093fd516ae4ccea17ef46a4362c5.tar.bz2 linux-f9070dc94542093fd516ae4ccea17ef46a4362c5.zip |
signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig
The locking in force_sig_info is not prepared to deal with a task that
exits or execs (as sighand may change). The is not a locking problem
in force_sig as force_sig is only built to handle synchronous
exceptions.
Further the function force_sig_info changes the signal state if the
signal is ignored, or blocked or if SIGNAL_UNKILLABLE will prevent the
delivery of the signal. The signal SIGKILL can not be ignored and can
not be blocked and SIGNAL_UNKILLABLE won't prevent it from being
delivered.
So using force_sig rather than send_sig for SIGKILL is confusing
and pointless.
Because it won't impact the sending of the signal and and because
using force_sig is wrong, replace force_sig with send_sig.
Cc: Daniel Lezcano <daniel.lezcano@free.fr>
Cc: Serge Hallyn <serge@hallyn.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Fixes: cf3f89214ef6 ("pidns: add reboot_pid_ns() to handle the reboot syscall")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'arch/mips')
0 files changed, 0 insertions, 0 deletions