DF-2553 / fix_run.log
DF2553: === trigger mode=2 === DF2553[mode2]: faithful kmalloc(0x100000001) = 0 (NULL: a faithful 4GiB+1 allocation is impossible here) DF2553[mode2]: truncated (int)(0x100000001)=1 kmalloc = 0xfffff8004f0c2970 usable=8 DF2553: === mode=2 done === DF2553: === trigger mode=1 === DF2553[mode1]: uio_resid=0x100000000 (iov0: 0x200 committed attacker bytes + iov1: 0xfffffe00 at PROT_NONE page) DF2553[mode1]: sbuf_new length param = (int)(resid+1) = 1; uiomove n = resid = 4294967296 <-- mismatch DF2553[mode1]: hole = canary idx 0 @0xfffff8004f0c2970 (verified: next kmalloc(1) returns exactly this chunk) DF2553[mode1]: sbuf_uionew returned s=0 *error=22 (unexpected) DF2553[mode1]: uio after: resid=0x100000000 iov0.len=512 iov1.len=4294966784 => 0 attacker bytes were copied into s_buf before the fault DF2553[scan]: corrupted=0 first=-1 last=-1 full-8-byte-pattern-match=0 DF2553[mode1]: no corruption observed DF2553: === mode=1 done === DF2553: === trigger mode=0 === DF2553[mode0]: control uio_resid=256 (0x100) DF2553[mode0]: OK s=0xfffff8008976ba00 err=0 s_size=257 s_len=256 data[0..7]=44 46 32 35 35 33 50 57 DF2553[mode0]: uio_resid after=0 (fully drained) DF2553[scan]: corrupted=0 first=-1 last=-1 full-8-byte-pattern-match=0 DF2553: === mode=0 done === DF2553: === trigger mode=1 === DF2553[mode1]: uio_resid=0x100000000 (iov0: 0x200 committed attacker bytes + iov1: 0xfffffe00 at PROT_NONE page) DF2553[mode1]: sbuf_new length param = (int)(resid+1) = 1; uiomove n = resid = 4294967296 <-- mismatch DF2553[mode1]: hole = canary idx 0 @0xfffff8004f0c2970 (verified: next kmalloc(1) returns exactly this chunk) DF2553[mode1]: sbuf_uionew returned s=0 *error=22 (unexpected) DF2553[mode1]: uio after: resid=0x100000000 iov0.len=512 iov1.len=4294966784 => 0 attacker bytes were copied into s_buf before the fault DF2553[scan]: corrupted=0 first=-1 last=-1 full-8-byte-pattern-match=0 DF2553[mode1]: no corruption observed DF2553: === mode=1 done ===