bisecting fixing commit since 1831fed559732b132aef0ea8261ac77e73f7eadf building syzkaller on 15be3cba18ad18776c6558e25792768113164e9d testing commit 1831fed559732b132aef0ea8261ac77e73f7eadf compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 1cd72c736fa01741ea668cedd7257f6346d6f89f4773d46c75e4956a5930a6a5 run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM run #1: crashed: general protection fault in simple_recursive_removal run #2: crashed: general protection fault in simple_recursive_removal run #3: crashed: general protection fault in simple_recursive_removal run #4: crashed: general protection fault in simple_recursive_removal run #5: crashed: general protection fault in simple_recursive_removal run #6: crashed: general protection fault in simple_recursive_removal run #7: crashed: general protection fault in simple_recursive_removal run #8: crashed: general protection fault in simple_recursive_removal run #9: crashed: general protection fault in simple_recursive_removal run #10: crashed: general protection fault in simple_recursive_removal run #11: crashed: general protection fault in simple_recursive_removal run #12: crashed: general protection fault in simple_recursive_removal run #13: OK run #14: OK run #15: OK run #16: OK run #17: crashed: general protection fault in simple_recursive_removal run #18: OK run #19: OK testing current HEAD 941e3e7912696b9fbe3586083a7c2e102cee7a87 testing commit 941e3e7912696b9fbe3586083a7c2e102cee7a87 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 6eeadb537529c637d2d7cf0c73b0f9c4f3838243353b5f20874c4db16c99b2aa all runs: crashed: INFO: rcu detected stall in corrupted revisions tested: 2, total time: 28m45.866607898s (build: 12m55.729384182s, test: 15m17.291968239s) the crash still happens on HEAD commit msg: Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost crash: INFO: rcu detected stall in corrupted rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P4282 } 4 jiffies s: 2645 root: 0x0/T rcu: blocking rcu_node structures (internal RCU debug):