[Bugfix] Misusing variable leads to kernel panic on cloning io request.#24
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Wiflin wants to merge 1 commit intoSymbioticLab:masterfrom
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[Bugfix] Misusing variable leads to kernel panic on cloning io request.#24Wiflin wants to merge 1 commit intoSymbioticLab:masterfrom
Wiflin wants to merge 1 commit intoSymbioticLab:masterfrom
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#14 #23 mentioned the bug of Null pointer and kernel got into a soft lock. The bug happens in function
is_mq.c::stackbd_make_request2.The real intention of this function may be, first to copy all
struct biothat attached to thestruct request, and then add thesebiointo the request queue of 'stackbd'.Misusing variable
req->nr_phys_segmentswhich means "Number of physical scatter gather segments in a request" (kernel document) led to out-of-range access to the request list.