bisecting fixing commit since 53bd76690e27f37c9df221a651a52cea04214da9 building syzkaller on 6c236867ce33c0c16b102e02a08226d7eb9b2046 testing commit 53bd76690e27f37c9df221a651a52cea04214da9 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 4644973c098937f4db46d3d6aa31b5c6476d3e86d9bef6eaeaa39c1b20bace8c run #0: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #1: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #2: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #3: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #4: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #5: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #6: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #7: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #8: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #9: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #10: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #11: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #12: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #13: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #14: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #15: crashed: BUG: sleeping function called from invalid context in lock_sock_nested run #16: crashed: SYZFAIL: netlink_send_ext: short netlink read run #17: crashed: SYZFAIL: netlink_send_ext: short netlink read run #18: OK run #19: OK testing current HEAD e23d55af0e1fca9be5c99f0c37d48b289f4d6489 testing commit e23d55af0e1fca9be5c99f0c37d48b289f4d6489 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 70cf9069838196122e2409af9511e7156ff6b71254f13ee5ef39b0ac3f3b96b2 run #0: crashed: SYZFAIL: netlink_send_ext: short netlink read run #1: crashed: SYZFAIL: netlink_send_ext: short netlink read run #2: crashed: SYZFAIL: netlink_send_ext: short netlink read run #3: crashed: SYZFAIL: netlink_send_ext: short netlink read run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK reproducer seems to be flaky Reproducer flagged being flaky revisions tested: 2, total time: 40m37.277532839s (build: 22m12.711044519s, test: 17m55.081924214s) the crash still happens on HEAD commit msg: Linux 4.19.205 crash: SYZFAIL: netlink_send_ext: short netlink read 2021/08/31 14:34:39 executor failed 11 times: executor 1: exit status 67 SYZFAIL: netlink_send_ext: short netlink read read=6 (errno 22: Invalid argument) SYZFAIL: child failed (errno 0: Success) loop exited with status 67 SYZFAIL: netlink_send_ext: short netlink read read=6 (errno 22: Invalid argument) SYZFAIL: child failed (errno 0: Success) loop exited with status 67