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a=jiCTI4zE5U7BLdzWsZGv:22 a=RD47p0oAkeU5bO7t-o6f:22 a=iHwBjlyiAAAA:8 a=VwQbUJbxAAAA:8 a=yPCof4ZbAAAA:8 a=Tc4j8a6dAIIitNfB5KUA:9 a=QEXdDO2ut3YA:10 a=uNSKXYNwxGiU6LD0JREI:22 a=5yU3S35YU4bGjq-dph-N:22 a=Bho9c0fBagfJEIQBS7DQ:22 cc=ntf awl=host:13517 On 03/08/2026 10:53, raoxu wrote: > From: Xu Rao > > comp_write_worker() returns true when the compared data matches. > memcmp() returns zero for equal data and non-zero for different data, so > its result must be negated before it is stored in a bool. > > The first segment already uses !memcmp(), but the wrapped segment uses > memcmp() directly, reversing the match result. Use !memcmp() there as > well. > > Fixes: 38d5c8336e60 ("scsi_debug: add Report supported opcodes+tmfs; Compare and write") > Cc: stable@vger.kernel.org > Signed-off-by: Xu Rao Reviewed-by: John Garry > --- > drivers/scsi/scsi_debug.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c > index 9d1c9c41d0f9..a5911482fc44 100644 > --- a/drivers/scsi/scsi_debug.c > +++ b/drivers/scsi/scsi_debug.c > @@ -4310,8 +4310,8 @@ static bool comp_write_worker(struct sdeb_store_info *sip, u64 lba, u32 num, > if (!res) > return res; > if (rest) > - res = memcmp(fsp, arr + ((num - rest) * lb_size), > - rest * lb_size); > + res = !memcmp(fsp, arr + ((num - rest) * lb_size), > + rest * lb_size); > if (!res) > return res; > if (compare_only) > -- > 2.50.1 > >