bisecting fixing commit since dfb571610ba392179348c8472bfb131d4173d585
building syzkaller on f89ed068375b8e31b9575a0ecc834c602657a9a9
testing commit dfb571610ba392179348c8472bfb131d4173d585 with gcc (GCC) 8.4.1 20210217
kernel signature: 39e22ed9f91187dbd2fb31ac43f8e4d4b1c7377814017106267e17e30254efdf
all runs: crashed: SYZFAIL: netlink_send_ext: short netlink write
testing current HEAD 2034d6f0838e465dd8f120c4e946d8444b4bb5df
testing commit 2034d6f0838e465dd8f120c4e946d8444b4bb5df with gcc (GCC) 8.4.1 20210217
kernel signature: 8d61e2d8bc292a322d311cbf0e03158402b652c9e86ed23a42f81f0db0c10009
all runs: crashed: SYZFAIL: netlink_send_ext: short netlink write
revisions tested: 2, total time: 25m29.587313467s (build: 17m49.74581358s, test: 7m15.458459048s)
the crash still happens on HEAD
commit msg: Linux 4.19.184
crash: SYZFAIL: netlink_send_ext: short netlink write
2021/04/04 01:35:52 executed programs: 645
2021/04/04 01:35:57 executed programs: 1345
2021/04/04 01:36:02 result: hanged=false err=executor 3: exit status 67
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
wrote=-1, want=36 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
wrote=-1, want=36 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/04/04 01:36:02 executed programs: 1997
2021/04/04 01:36:10 executed programs: 2003