Re: [PATCH] block: tolerate tracing of NULL bio

2017-09-08 Thread Jens Axboe
On 09/07/2017 06:36 PM, Greg Thelen wrote: > __get_request() can call trace_block_getrq() with bio=NULL which causes > block_get_rq::TP_fast_assign() to deref a NULL pointer and panic. > > Syzkaller fuzzer panics with > linux-next (1d53d908b79d7870d89063062584eead4cf83448): > kasan: GPF could be

Re: [PATCH] block: tolerate tracing of NULL bio

2017-09-08 Thread Christoph Hellwig
Looks good, Reviewed-by: Christoph Hellwig

Re: [PATCH] block: tolerate tracing of NULL bio

2017-09-07 Thread Ming Lei
On Fri, Sep 8, 2017 at 8:36 AM, Greg Thelen wrote: > __get_request() can call trace_block_getrq() with bio=NULL which causes > block_get_rq::TP_fast_assign() to deref a NULL pointer and panic. > > Syzkaller fuzzer panics with > linux-next (1d53d908b79d7870d89063062584eead4cf83448): > kasan: GPF