Hello, I am facing issue of memory corruption where only one field of allocated structure is getting corrupted. I have bio structure and one of the page in bio vector is getting set to NULL. crash> struct bio_vec 0xffff88009dc5eb00 struct bio_vec { bv_page = 0xffffea000a434b80, bv_len = 4096, bv_offset = 0 } crash> struct bio_vec 0xffff88009dc5eb10 struct bio_vec { bv_page = 0x0, bv_len = 4096, bv_offset = 0 } crash> struct bio_vec 0xffff88009dc5eb20 struct bio_vec { bv_page = 0xffffea000a467500, bv_len = 4096, bv_offset = 0 } I have allocated contagious memory for bio vectors. As you can see in second bio vector bv_page is getting set to NULL. This address is valid till the time I do some operations in my module. After some operations bv_page is getting set to NULL. Other fields are having valid data. Is there any debugging technique / tool available which will track access to specific memory access? I would like to dump stack every time bv_page is accessed or modified Thanks and regards, Pritam Bankar