KASAN: out-of-bounds Read in __switch_to (2)
Status: fixed on 2020/11/16 12:12
Fix commit: a49145acfb97 fbmem: add margin check to fb_check_caps()
First crash: 433d, last: 433d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: BUG: unable to handle kernel paging request in cfb_imageblit (log)
Repro: syz .config

Fix bisection: fixed by (bisect log) :
commit a49145acfb975d921464b84fe00279f99827d816
Author: George Kennedy <>
Date: Tue Jul 7 19:26:03 2020 +0000

  fbmem: add margin check to fb_check_caps()

similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: out-of-bounds Read in __switch_to C 1 1066d 1066d 12/22 fixed on 2019/03/06 07:43
Patch testing requests:
Created Duration User Patch Repo Result
2020/10/08 03:09 11m upstream report log

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2020/09/29 11:04 upstream fb0155a09b02 1b88c6d5 .config log report syz