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kernel_a52xq/net/bpfilter
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Filename Latest commit message Latest commit date
Eric W. Biederman 5d1b927a65 signal/bpfilter: Fix bpfilter_kernl to use send_sig not force_sig 
[ Upstream commit 1dfd1711de2952fd1bfeea7152bd1687a4eea771 ]

The locking in force_sig_info is not prepared to deal with
a task that exits or execs (as sighand may change).  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 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: Alexei Starovoitov <ast@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Fixes: d2ba09c17a ("net: add skeleton of bpfilter kernel module")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-27 14:50:51 +01:00
..
.gitignore bpfilter: ignore binary files 2018-06-20 09:07:46 +09:00
bpfilter_kern.c signal/bpfilter: Fix bpfilter_kernl to use send_sig not force_sig 2020-01-27 14:50:51 +01:00
bpfilter_umh_blob.S bpfilter: include bpfilter_umh in assembly instead of using objcopy 2018-06-28 21:39:16 +09:00
Kconfig bpfilter: remove trailing newline 2018-07-24 14:10:42 -07:00
main.c bpfilter: don't pass O_CREAT when opening console for debug 2018-05-24 09:36:49 -04:00
Makefile kbuild: Rename HOSTLDFLAGS to KBUILD_HOSTLDFLAGS 2018-07-18 01:18:05 +09:00
msgfmt.h net: add skeleton of bpfilter kernel module 2018-05-23 13:23:40 -04:00