bisecting fixing commit since f40ddce88593482919761f74910f42f4b84c004b building syzkaller on 3e5ed8b45e7a561d6344a4d3d7bf3bfb8f24a7b3 testing commit f40ddce88593482919761f74910f42f4b84c004b with gcc (GCC) 10.2.1 20210217 kernel signature: 401ae697250340a8f19fafbe34755b1004207c8f3a328d8b50087c42f968b433 run #0: crashed: KASAN: use-after-free Read in blk_update_request run #1: crashed: KASAN: use-after-free Read in blk_update_request run #2: crashed: KASAN: use-after-free Read in blk_update_request run #3: crashed: KASAN: use-after-free Read in blk_update_request run #4: crashed: KASAN: use-after-free Read in blk_update_request run #5: crashed: KASAN: use-after-free Read in blk_update_request run #6: crashed: KASAN: use-after-free Read in blk_update_request run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK reproducer seems to be flaky testing current HEAD f55966571d5eb2876a11e48e798b4592fa1ffbb7 testing commit f55966571d5eb2876a11e48e798b4592fa1ffbb7 with gcc (GCC) 10.2.1 20210217 kernel signature: 35fdc0b707868e42709ddd24a5fa8f0ec34ffaf6fee596d11c633ee345419c68 all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0) Reproducer flagged being flaky revisions tested: 2, total time: 37m47.48487309s (build: 13m33.794935623s, test: 23m29.517978817s) bisection is inconclusive, the first good commit could be any of: f40ddce88593482919761f74910f42f4b84c004b f55966571d5eb2876a11e48e798b4592fa1ffbb7