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: 61a567d130d91f009cc95c451ad920d4f3bf1a66c84d514367f48ce02b10ae7c run #0: crashed: general protection fault in simple_recursive_removal 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: crashed: general protection fault in simple_recursive_removal run #14: crashed: general protection fault in simple_recursive_removal run #15: crashed: general protection fault in simple_recursive_removal run #16: crashed: general protection fault in simple_recursive_removal run #17: crashed: general protection fault in simple_recursive_removal run #18: OK run #19: OK testing current HEAD b00ed48bb0a7c295facf9036135a573a5cdbe7de testing commit b00ed48bb0a7c295facf9036135a573a5cdbe7de compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 7e6fc62eb8b7924ae4dd5451b72bda62f05b29ae9806b1e7d982cfe1e15722bc all runs: crashed: INFO: rcu detected stall in corrupted revisions tested: 2, total time: 27m59.351966378s (build: 12m17.64811106s, test: 15m7.236472184s) the crash still happens on HEAD commit msg: Merge tag 'dmaengine-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine crash: INFO: rcu detected stall in corrupted rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P4376 } 5 jiffies s: 2593 root: 0x0/T rcu: blocking rcu_node structures (internal RCU debug):