bisecting fixing commit since bfdef05c8da46b022172695aa493cff7ac667a4b
building syzkaller on 6acc789ad3f6c04319764f414ebb1a08e6145332
testing commit bfdef05c8da46b022172695aa493cff7ac667a4b
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 75d48358f52b48067c7b54775a3a6e8e7cd273154f9aaf829007714b226d8394
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD e853993d29aa42ac4b3c2912db975a0a66d7a5b0
testing commit e853993d29aa42ac4b3c2912db975a0a66d7a5b0
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: bbab829644b3419563704bbe90907395ef06a98b69dbd40466b94e6cc9e402fd
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 20m16.959408249s (build: 13m35.190383772s, test: 6m13.64450215s)
the crash still happens on HEAD
commit msg: Linux 4.14.269
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1