bisecting cause commit starting from 34af78c4e616c359ed428d79fe4758a35d2c5473
building syzkaller on 89bc860804252dbacb8c2bea60b9204859f4afd7
testing commit 34af78c4e616c359ed428d79fe4758a35d2c5473
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 43ec41286ad73828ca9bfef74ce5fe7be1466d1b06e68264289158f7f7c8fe53
run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: failed to write control pipe: write |NUM: broken pipe
run #1: OK
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
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
revisions tested: 1, total time: 12m7.158903204s (build: 6m20.297003362s, test: 5m28.89921294s)
error: the crash wasn't reproduced on the original commit