bisecting fixing commit since 43598c571e7ed29e4c81e35b4a870fe6b9f8d58e
building syzkaller on 4f7e1d0f5e1c44e2298738f690dde25c486cc65a
testing commit 43598c571e7ed29e4c81e35b4a870fe6b9f8d58e
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: c25afe4471257674f6530f3b7026bbccd7df01dec33c1edddaa37bd27cb0afeb
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in vb2_vmalloc_put
testing current HEAD 2760370b164918bd9311e6bf445cf4c118d3463c
testing commit 2760370b164918bd9311e6bf445cf4c118d3463c
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 36ef32a8672dfeef3a4df3d45c658f7540fd71b0e001f7f382f01aa71144527a
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 24m38.088224576s (build: 16m58.233323875s, test: 6m53.796934737s)
the crash still happens on HEAD
commit msg: Linux 4.14.252
crash: unregister_netdevice: waiting for DEV to become free
can: request_module (can-proto-0) failed.
can: request_module (can-proto-0) failed.
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1