| commit | f794c8279d02ccd69429d816eb03fa12c130d06d | |
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | |
| Mon, 5 Mar 2007 22:35:38 +0000 (5 23:35 +0100) | ||
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | |
| Mon, 5 Mar 2007 22:35:38 +0000 (5 23:35 +0100) | ||
| tree | e062a37c5dfa908599b98724778bb78228a85abf | treesnapshot (tar.gz zip) |
| parent | c3442e296517aee733d62fc3fe03211598902c7d | commitdiff |
[S390] kprobes breaks BUG_ON
The illegal operation handler calls the die notifier with DIE_BPT to
let kprobes pick up its breakpoint. If kprobes does not find its
breakpoint it returns NOTIFY_STOP instead of NOTIFY_DONE.
Since we use stop_machine_run on s390 to arm/disarm the kprobes
breakpoints the race that kprobe_handler tries to solve by checking
for the kprobes breakpoints does not exist. Removing the check makes
BUG_ON working again.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The illegal operation handler calls the die notifier with DIE_BPT to
let kprobes pick up its breakpoint. If kprobes does not find its
breakpoint it returns NOTIFY_STOP instead of NOTIFY_DONE.
Since we use stop_machine_run on s390 to arm/disarm the kprobes
breakpoints the race that kprobe_handler tries to solve by checking
for the kprobes breakpoints does not exist. Removing the check makes
BUG_ON working again.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| arch/s390/kernel/kprobes.c | diffblobblamehistory |