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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2007-03-05 23:35:38 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-03-05 23:35:38 +0100
commitf794c8279d02ccd69429d816eb03fa12c130d06d (patch)
treee062a37c5dfa908599b98724778bb78228a85abf /arch/s390/Kconfig
parentc3442e296517aee733d62fc3fe03211598902c7d (diff)
downloadop-kernel-dev-f794c8279d02ccd69429d816eb03fa12c130d06d.zip
op-kernel-dev-f794c8279d02ccd69429d816eb03fa12c130d06d.tar.gz
[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>
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