The following commit has been merged in the master branch:
commit 2b7af1243f46496c0b5973b3fa2a6396243f7613
Author: Cheyenne Wills <[email protected]>
Date: Fri Aug 9 14:25:03 2019 -0600
LINUX 5.3.0: Use send_sig instead of force_sig
Linux 5.3.0 commit 3cf5d076fb4d48979f382bc9452765bf8b79e740 "signal
Remove task parameter from force_sig" (part of siginfo-linus branch)
changes the parameters for the Linux kernel function force_sig. See LKML
thread starting at https://lkml.org/lkml/2019/5/22/1351
According to the LKML discussion and the above commit message force_sig
is only safe to deliver a synchronous signal to the current task. To
send a signal to another task, we're supposed to use send_sig instead,
which has been available since at least linux 2.6.12-rc12.
Currently, rx_knet calls force_sig to kill the rxk_ListenerTask. With
the Linux 5.3.0 kernel, this module fails to compile due to the above
noted changes.
Replace the force_sig call with send_sig. In order to use send_sig, the
rxk_listener thread must allow SIGKILL and during shutdown (umount)
SIGKILL must be unblocked for the rxk_listener thread.
Note that SIGKILL is initially blocked on rxk_listener and is only
unblocked when shutting down the thread. Having the signal blocked is
sufficient to prevent unwanted signals from reaching the rxk_listener
thread during normal operation.
Change-Id: I0c31d66f4ecd887ff9253ba506565592010e8bcb
Reviewed-on: https://gerrit.openafs.org/13753
Reviewed-by: Benjamin Kaduk <[email protected]>
Tested-by: BuildBot <[email protected]>
src/afs/LINUX/osi_misc.c | 11 +++++++++++
src/afs/afs_osi.c | 3 +++
src/afs/afs_prototypes.h | 2 +-
src/rx/LINUX/rx_knet.c | 2 +-
src/rx/rx_kcommon.c | 1 +
5 files changed, 17 insertions(+), 2 deletions(-)
--
OpenAFS Master Repository
_______________________________________________
OpenAFS-cvs mailing list
[email protected]
https://lists.openafs.org/mailman/listinfo/openafs-cvs
