| commit | 9ec374a781c34daa6e70fcd885ef30e090cc2384 | |
| author | Markus Armbruster <armbru@redhat.com> | |
| Wed, 22 Apr 2020 13:07:09 +0000 (22 15:07 +0200) | ||
| committer | Markus Armbruster <armbru@redhat.com> | |
| Wed, 29 Apr 2020 06:01:52 +0000 (29 08:01 +0200) | ||
| tree | ab9586712a191596b64f3dbdc07816cd7e1b3f4b | treesnapshot (tar.gz zip) |
| parent | abc9bf69a66a11499a801ff545b8fe7adbb3a04c | commitdiff |
cpus: Proper range-checking for -icount shift=N
timers_state.icount_time_shift must be in [0,63] to avoid undefined
behavior when shifting by it, e.g. in cpu_icount_to_ns().
icount_adjust() clamps it to [0,MAX_ICOUNT_SHIFT], with
MAX_ICOUNT_SHIFT = 10. configure_icount() doesn't. Fix that.
Fixes: a8bfac37085c3372366d722f131a7e18d664ee4d
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200422130719.28225-5-armbru@redhat.com>
timers_state.icount_time_shift must be in [0,63] to avoid undefined
behavior when shifting by it, e.g. in cpu_icount_to_ns().
icount_adjust() clamps it to [0,MAX_ICOUNT_SHIFT], with
MAX_ICOUNT_SHIFT = 10. configure_icount() doesn't. Fix that.
Fixes: a8bfac37085c3372366d722f131a7e18d664ee4d
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200422130719.28225-5-armbru@redhat.com>
| cpus.c | diffblobblamehistory |