bisecting fixing commit since 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
building syzkaller on cb93dc6ac64225e09f44bac6c6cce1dae1b248b0
testing commit 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 77bdf0837fbb2d9b8aa5b63ebc0c83924e18846116b43fd4f94b91ad090a2582
all runs: crashed: BUG: unable to handle kernel paging request in vga16fb_fillrect
testing current HEAD 569d1abf9402e943bf00821a6e0b8e13bffde699
testing commit 569d1abf9402e943bf00821a6e0b8e13bffde699
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 357df7a013b48e987986e1e5fd65162fefc86b5dfc4252448ce02589e6faf832
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 25m50.622148946s (build: 18m45.819043074s, test: 6m20.831419489s)
the crash still happens on HEAD
commit msg: Linux 4.14.278
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1