bisecting fixing commit since cbfa1702aaf69b2311ea1b35e04f113c48368c67
building syzkaller on 4a77ae0bdc5cd75ebe88ce7c896aae6bbf457a29
testing commit cbfa1702aaf69b2311ea1b35e04f113c48368c67
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: c2affe0b2096fe885d5487dd94d2283ca8954ccace9273d3836ff70bd8fc9be7
run #0: crashed: general protection fault in vgem_fence_attach_ioctl
run #1: crashed: general protection fault in vgem_fence_attach_ioctl
run #2: crashed: WARNING in mutex_destroy
run #3: crashed: general protection fault in vgem_fence_attach_ioctl
run #4: crashed: general protection fault in vgem_fence_attach_ioctl
run #5: crashed: general protection fault in vgem_fence_attach_ioctl
run #6: crashed: general protection fault in vgem_fence_attach_ioctl
run #7: crashed: WARNING in mutex_destroy
run #8: crashed: WARNING in mutex_destroy
run #9: crashed: WARNING in mutex_destroy
run #10: crashed: WARNING in mutex_destroy
run #11: crashed: general protection fault in vgem_fence_attach_ioctl
run #12: crashed: WARNING in mutex_destroy
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
testing current HEAD 84bae26850e3b384a45f0f9a5f8b3b5983afacd8
testing commit 84bae26850e3b384a45f0f9a5f8b3b5983afacd8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: e9e73212a588934645817aa05e46aed5bad181b23d88013acc5b9d599f35fb61
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 34m1.614320722s (build: 17m55.795042428s, test: 15m37.842216253s)
the crash still happens on HEAD
commit msg: Linux 4.14.284
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout