bisecting fixing commit since 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
building syzkaller on cb93dc6ac64225e09f44bac6c6cce1dae1b248b0
testing commit 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 0f7b0dafaf12d8f741d9347ee4d3d4a5303914a64e09a65768b38a89a0e80981
all runs: crashed: BUG: unable to handle kernel paging request in vga16fb_fillrect
testing current HEAD 424a46ea058e160ae6fdd0693092ba79da533f26
testing commit 424a46ea058e160ae6fdd0693092ba79da533f26
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 42fe4d88d269ddf95f5677e738a33429ed6e23ad3e0e81646f5baad30e2506c9
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m23.069589616s (build: 16m20.497573752s, test: 6m22.743179565s)
the crash still happens on HEAD
commit msg: Linux 4.14.288
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1